TW202127029A - Toilet seat device and excrement sensing device - Google Patents

Abstract

A toilet seat device according to an embodiment is mounted atop a toilet having a bowl part for receiving excrement, said device comprising: a toilet seat on which a user sits; a light emitting part provided with one or a plurality of light emitting elements which irradiate light forward; a light receiving part provided with a light receiving element which receives the light; and a casing in which the light emitting part and the light receiving part are disposed. The one or the plurality of the light emitting elements are disposed adjacent the light receiving part or further forward than the light receiving part in either a side view or a plan view of the casing.

Description

Toilet seat device and excrement detection device

The embodiment of the present disclosure relates to a toilet seat device and an excrement detection device.

Conventionally, there has been known a toilet seat device equipped with a sensor capable of detecting excrement discharged into the toilet (for example, refer to Patent Document 1).

The sensor used in the aforementioned conventional toilet seat device has a color sensing part, which can obtain biological information about the health of the user based on the excrement; the color sensing part is located in the same frame It is provided with a light emitting unit capable of irradiating excrement with light, and a light receiving unit capable of receiving reflected light from excrement. [Prior Technical Literature]

[Patent Document 1] Japanese Patent No. 5861977

[The problem to be solved by the invention]

However, as in the aforementioned conventional technology, in terms of the positional relationship between the light-emitting part and the light-receiving part arranged in the same frame, if the light-emitting part is arranged behind the light-receiving part, it will cause the light-emitting part to be arranged in the front of the frame. The light receiving unit receives reflected light reflected by the light irradiated from the rear of the housing. The reflected light reflected in the frame has a lower attenuation than the reflected light from excrement, so the light intensity is high. Therefore, the reflected light reflected in the frame may overwrite the data (information loss error, etc.) based on the reflected light from the excrement, resulting in a problem that the detection accuracy of the excrement is reduced. Therefore, it is desired to avoid the decrease in detection accuracy in the detection of excrement and other detection objects.

The embodiment of the present disclosure aims to provide a toilet seat device and an excrement detection device that can avoid the risk of a decrease in detection accuracy. [Technical means to solve the problem]

The toilet seat device in one form of the embodiment is a toilet seat device which is placed on the upper part of a toilet with a basin for receiving excrement; it is characterized in that it has: a toilet seat that allows the user to sit; The light-emitting part is provided with one or more light-emitting elements that irradiate light forward; the light-receiving part is provided with light-receiving elements that receive light; and the frame body is provided with the light-emitting part and the light-receiving part; the aforementioned one Or a plurality of light-emitting elements are arranged side by side with the light-receiving part, or arranged in front of the light-receiving part in a side view or a plan view of the frame.

According to the toilet seat device of one aspect of the embodiment, one or more light-emitting elements provided in the light-emitting part for irradiating light are arranged in the same frame as the light-receiving element provided in the light-receiving part for receiving light, and in this In a side view or a plan view of the frame, the light-emitting element and the light-receiving element are arranged side by side, or the light-emitting element is arranged in front of the light-receiving element. Therefore, it is possible to reduce the incident in which the light receiving element detects the reflected light of the light irradiated from the light emitting element and reflected in the frame. Thereby, it can be avoided that the reflected light reflected in the frame overwhelms the data based on the reflected light from the excrement, which causes the detection accuracy of the excrement to decrease. In this way, the risk of a decrease in detection accuracy can be avoided.

The toilet seat device of one form of the embodiment is: the light-emitting part is provided with one or more light-emitting elements that irradiate the excrement of the user to the front; the light-receiving part receives the light The light irradiated by the light emitting unit is reflected light from the excrement.

According to the toilet seat device of one aspect of the embodiment, when placed on the upper part of the toilet, light is irradiated to the excrement excreted by the user, and the reflected light from the excrement to the irradiated light is received, thereby being able to obtain Information about the excrement that is excreted into the toilet. In this way, it is possible to avoid a decrease in the detection accuracy of excrement.

The toilet seat device of one aspect of the embodiment is that at least one of the aforementioned light-emitting elements is irradiated with a wavelength of 450 nm or more.

According to the toilet seat device of one aspect of the embodiment, by irradiating at least one of the light-emitting elements with a wavelength of 450 nm or more, it is possible to avoid a decrease in the detection accuracy of the color recognition of excrement. For example, a plurality of light-emitting elements included in the light-emitting portion of the toilet seat device are provided, and at least one of the light-emitting elements is irradiated with a wavelength of 450 nm or more, thereby enabling the color of excrement to be recognized with good accuracy.

A toilet seat device of one aspect of the embodiment is: the light receiving part is provided with a lens for condensing light to the front of the light receiving element; the one or more light emitting elements are viewed from the side of the frame or In a plan view, it is arranged side by side with the aforementioned lens, or arranged in front of the aforementioned lens.

According to the toilet seat device of one aspect of the embodiment, the light-emitting element and the lens provided in front of the light-receiving element are arranged side by side, or the light-emitting element is arranged more than the light-receiving element in the side view or top view of the housing The front lens is further forward. Therefore, it can be further avoided that the reflected light reflected in the frame overwhelms the data based on the reflected light from the excrement, resulting in a decrease in the detection accuracy of the excrement.

The toilet seat device of one form of the embodiment is: around the one or more light-emitting elements, there is a reflection that makes the light irradiated by the one or more light-emitting elements have a single directivity toward the front means.

According to the toilet seat device of one aspect of the embodiment, since the reflecting means for making the light emitted by the light emitting element have a unidirectional forward direction is provided around the light emitting element, it is possible to reduce the amount of light emitted by the light emitting element in the frame. The risk of reflection in the body. Thereby, it is possible to further avoid the situation that the light receiving unit receives the data based on the reflected light reflected in the frame and overwhelms the data based on the reflected light from the excrement, resulting in a decrease in the detection accuracy of the excrement.

A toilet seat device according to one aspect of the embodiment includes a cover for suppressing the incidence of light from other than the front of the light receiving element around the light receiving element.

According to the toilet seat device of one aspect of the embodiment, since a cover is provided around the light-receiving element to prevent the light irradiated by the light-emitting element from entering from outside the front, it is possible to reduce the detection of excretion from the front. The danger of light other than the reflected light of the object. Thereby, it is possible to further avoid the situation that the light receiving unit receives the data based on the reflected light reflected in the frame and overwhelms the data based on the reflected light from the excrement, resulting in a decrease in the detection accuracy of the excrement.

The toilet seat device in one form of the embodiment is a toilet seat device which is placed on the upper part of a toilet with a basin for receiving excrement; it is characterized in that it has: a toilet seat that allows the user to sit; The light-emitting part is provided with one or more light-emitting elements that irradiate light forward; the light-receiving part is provided with light-receiving elements that receive light; and the frame body is provided with the light-emitting part and the light-receiving part; A cover is provided around the element to suppress the incidence of light from other than the front of the light-receiving element.

According to the toilet seat device of one aspect of the embodiment, since the reflecting means for making the light emitted by the light emitting element have a unidirectional forward direction is provided around the light emitting element, it is possible to reduce the amount of light emitted by the light emitting element in the frame. There is a risk of reflection in the body, and because there is a cover around the light-receiving element to prevent the light irradiated by the light-emitting element from entering from outside the front, it can reduce the detection of the reflected light from the excrement incident from the front The danger of light beyond. Thereby, it is possible to further avoid the situation that the light receiving unit receives the data based on the reflected light reflected in the frame and overwhelms the data based on the reflected light from the excrement, resulting in a decrease in the detection accuracy of the excrement. In this way, the risk of a decrease in detection accuracy can be avoided.

The excrement detection device in one form of the embodiment is an excrement detection device, which is arranged in a toilet with a basin for receiving excrement; and is characterized in that it has: a light-emitting part which is arranged forward One or more light-emitting elements that irradiate light; the light-receiving part is provided with a light-receiving element that receives light; and a frame body is configured with the light-emitting part and the light-receiving part; the one or more light-emitting elements are placed in the frame In a side view or a plan view of the body, it is arranged side by side with the light receiving part, or arranged in front of the light receiving part.

According to the excrement detecting device of one aspect of the embodiment, the light emitting element provided in the light emitting part for irradiating light is arranged in the same frame as the light receiving element provided in the light receiving part in order to receive the reflected light from excrement, and In a side view or a plan view of the frame, the light-emitting element and the light-receiving element are arranged side by side, or the light-emitting element is arranged in front of the light-receiving element. Therefore, it is possible to reduce the incident in which the light receiving element detects the reflected light of the light irradiated from the light emitting element and reflected in the frame. Thereby, it can be avoided that the reflected light reflected in the frame overwhelms the data based on the reflected light from the excrement, which causes the detection accuracy of the excrement to decrease. In this way, the risk of a decrease in detection accuracy can be avoided.

The excrement detection device in one form of the embodiment is an excrement detection device, which is arranged in a toilet with a basin for receiving excrement; and is characterized in that it has: a light-emitting part which is arranged forward One or more light-emitting elements that irradiate light; the light-receiving part is provided with a light-receiving element that receives light; and a frame body is provided with the light-emitting part and the light-receiving part; A cover for the incidence of light other than the front of the light receiving element.

According to the excrement detection device of one of the embodiments, since a cover is provided around the light-receiving element to prevent the light irradiated by the light-emitting element from entering from outside the front, it is possible to reduce the detection of incident from the front. The risk of light other than reflected light from excrement. Thereby, it is possible to further avoid the situation that the light receiving unit receives the data based on the reflected light reflected in the frame and overwhelms the data based on the reflected light from the excrement, resulting in a decrease in the detection accuracy of the excrement. In this way, the risk of a decrease in detection accuracy can be avoided.

Moreover, if you want to detect excrement while the user is sitting, the upper part of the toilet seat is covered by the user's buttocks, so the detection will be carried out in a dim environment that is not easy to enter, such as the light of the lighting arranged in the toilet space. Measurement. Therefore, the light amount of the reflected light from the excrement received by the light receiving unit greatly depends on the light irradiated by the light emitting unit. At this time, if the light amount of the reflected light from the excrement received by the light-receiving part is insufficient, there is a risk that the information about the excrement cannot be accurately obtained. Therefore, it is desirable to be able to avoid the insufficient amount of light irradiated to the detection target such as excrement.

The toilet seat device in one form of the embodiment is a toilet seat device which is placed on the upper part of a toilet with a basin for receiving excrement; it is characterized in that it has: a toilet seat that allows the user to sit; The light-emitting part irradiates light forward; and the light-receiving part receives light; and the light-emitting part is arranged such that the central axis of the light-emitting part is inclined in a direction approaching the central axis of the light-receiving part on the front side.

The inventors of the present case have actively studied the structure to avoid insufficient light intensity of the reflected light from stool (feces) received by the light receiving part. As a result, it was found that it is beneficial to receive the reflected light from stool, which is the light irradiated along the central axis of the light-emitting unit, which has the largest amount of light among the light irradiated by the light-emitting unit. According to the toilet seat device of one aspect of the embodiment, the light-emitting part is not arranged so that the direction of the central axis of the light-emitting part is parallel to the direction of the central axis of the light-receiving part, but the direction of the central axis of the light-emitting part faces the light-receiving part. The light-emitting part is arranged in such a way that the central axis of the lamp is tilted obliquely. Thereby, according to the toilet seat device according to one aspect of the embodiment, the light irradiated along the central axis of the light-emitting unit with the largest amount of light from the light-emitting unit to the stool is reflected toward the central axis of the light-receiving unit. Therefore, it is possible to avoid insufficient light intensity of the reflected light from stool (feces) received by the light receiving unit. In this way, it is possible to avoid insufficient light intensity of the irradiated light, and to avoid insufficient light intensity of the reflected light of the irradiated light.

The toilet seat device of one form of the embodiment is: the light-emitting part irradiates light forward to the stool excreted by the user; the light-receiving part receives the light emitted by the light-emitting part from the stool reflected light.

According to the toilet seat device of one aspect of the embodiment, light is irradiated to the excrement excreted by the user, and the reflected light from the excrement to the irradiated light is received, whereby the excrement excreted into the toilet can be obtained. News. In this way, it is possible to avoid insufficient light intensity of the light irradiated with stool (feces), and to avoid insufficient light intensity of reflected light from stool (feces).

A toilet seat device according to one aspect of the embodiment is: the light-emitting part is provided with a plurality of light-emitting elements that irradiate light; the plurality of light-emitting elements can respectively irradiate light of different wavelengths; the light irradiated by the plurality of light-emitting elements The half-value angle (half-value angle) area is arranged in such a way that it overlaps in the opening of the toilet seat when viewed from the top of the toilet seat.

In the stool (feces), in order to detect the color of the stool, it is conceivable to irradiate the stool with white light of all wavelengths including the visible spectrum, and to split the reflected light from the stool on the light-receiving part side (Method 1) , And a method of sequentially irradiating stool with a plurality of different wavelengths of light (the second method). In this case, compared with the first method, the second method has the advantage of being able to avoid cost, but on the other hand, it has the disadvantage that it is necessary to avoid uneven light quantity of the reflected light from stool for a plurality of different wavelengths of light. According to the toilet seat device of one aspect of the embodiment, the light-emitting part is provided with a plurality of light-emitting elements capable of irradiating light of different wavelengths. The light-emitting elements are arranged such that the half-value angle regions where the light intensity of the light irradiated by the elements is relatively high overlap with each other. In this way, it is possible to avoid unevenness in the amount of light reflected from stool with respect to a plurality of lights of different wavelengths.

A toilet seat device of one aspect of the embodiment is: the plurality of the light-emitting elements are set to the imaginary drop position of the stool excreted by the user, so that the half-value angle area of the light irradiated by the plurality of the light-emitting elements They are configured in an overlapping manner.

The toilet seat device according to one aspect of the embodiment is arranged in such a manner that the half-value angle regions where the light intensity of the light irradiated by a plurality of light-emitting elements are relatively high are overlapped with respect to the virtual drop position of the stool excreted by the user. Light-emitting element. In this way, it is possible to avoid unevenness in the amount of light reflected from stool with respect to a plurality of lights of different wavelengths.

In the toilet seat device of one aspect of the embodiment, the plurality of the light-emitting elements are arranged around the light-receiving part.

According to the toilet seat device of one aspect of the embodiment, since the plurality of light-emitting elements are arranged around the periphery of the light-receiving part, the light generated by the plurality of light-emitting elements that are arranged obliquely toward the light-receiving part can be made to have the central axis of the light-emitting part. The illumination angle is homogenized. Thereby, it is possible to further avoid unevenness in the amount of light reflected from stool to the light irradiated by the plurality of light-emitting elements.

The toilet seat device in one form of the embodiment is a toilet seat device which is placed on the upper part of a toilet with a basin for receiving excrement; it is characterized in that it has: a toilet seat that allows the user to sit; The light-emitting part is for irradiating light; and the light-receiving part is for receiving light; and the light-emitting part is provided with a plurality of light-emitting elements that irradiate light of the same wavelength.

According to the toilet seat device of one aspect of the embodiment, since the light-emitting part is provided with a plurality of light-emitting elements irradiating light of the same wavelength, it is possible to detect stool when the user is seated, and to emit light from a plurality of stools. The elements simultaneously irradiate light of the same wavelength. Thereby, it is possible to avoid insufficient light amount of the reflected light from stool received by the light receiving unit. In this way, it is possible to avoid insufficient light intensity of the irradiated light, and to avoid insufficient light intensity of the reflected light of the irradiated light.

The excrement detection device of one form of the embodiment is an excrement detection device, which is arranged in a toilet with a basin for receiving excrement; it is characterized in that it has: a light-emitting part that illuminates light to the front And the light-receiving part which receives light; the light-emitting part is arranged in such a way that the central axis of the light-emitting part is inclined in a direction approaching the central axis of the light-receiving part on the front side.

According to the excrement detection device of one aspect of the embodiment, the light-emitting part is not arranged so that the direction of the central axis of the light-emitting part is parallel to the direction of the central axis of the light-receiving part, but the direction of the central axis of the light-emitting part is opposed to The light-emitting part is arranged such that the central axis of the light-receiving part is inclined obliquely. Thereby, when disposing the toilet, the light irradiated along the central axis of the light-emitting unit, which has the largest amount of light among the light irradiated from the light-emitting unit, is reflected toward the central axis of the light-receiving unit. Therefore, it is possible to avoid a situation where the light amount of the reflected light from stool received by the light receiving unit is insufficient. In this way, it is possible to avoid insufficient light intensity of the irradiated light, and to avoid insufficient light intensity of the reflected light of the irradiated light.

The excrement detection device in one form of the embodiment is an excrement detection device, which is arranged in a toilet with a basin for receiving excrement; it is characterized by: having: a light-emitting part that irradiates light; and receives light The part receives light; in the light-emitting part, a plurality of light-emitting elements that emit light of the same wavelength are provided.

According to the excrement detection device of one aspect of the embodiment, since the light emitting part is provided with a plurality of light emitting elements that irradiate light of the same wavelength, it can detect stool when the user is seated, and can detect the stool from a plurality of The two light-emitting elements simultaneously irradiate light of the same wavelength. Thereby, it is possible to avoid insufficient light amount of the reflected light from stool received by the light receiving unit. In this way, it is possible to avoid insufficient light intensity of the irradiated light, and to avoid insufficient light intensity of the reflected light of the irradiated light. [Effects of Invention]

According to one aspect of the embodiment, it is possible to avoid the possibility of a decrease in detection accuracy.

Hereinafter, with reference to the accompanying drawings, the embodiments of the toilet seat device and the excrement detection device disclosed in this case will be described in detail. In addition, the present invention is not limited to the embodiments shown below. Although the following is an explanation of the processing of information collection about excrement generated by users of the dressing room (hereinafter also referred to as "excretion information collection") and the structure used to carry out the processing, but first of all, the premise of the toilet is explained. Various components of the system, etc.

＜1. Composition of toilet system＞ First, the configuration of the toilet system of the first embodiment will be described with reference to FIG. 1. Fig. 1 is a perspective view showing an example of the configuration of the toilet system of the first embodiment.

As shown in FIG. 1, the toilet system 1 includes a toilet seat device 2 and an operating device 10. As shown in FIG. 1, in the powder room R, a western-style toilet (hereinafter referred to as "toilet") 7 is installed on the floor surface F. In addition, the direction from the floor surface F toward the space in the dressing room R is described as "upper" below. The toilet seat device 2 is attached to the upper part of the toilet 7.

The toilet 7 is made of, for example, ceramics. A basin 8 is formed in the toilet 7. The basin 8 is a shape recessed downward and is a part for receiving excrement of the user. In addition, the toilet 7 is not limited to the floor type as shown in the figure. As long as the toilet system 1 can be used, any form may be used, such as a wall-mounted form. In the toilet 7, a rim 9 is provided on the entire circumference covering the end of the opening to which the bowl 8 faces. In the powder room R, for example, a washing tank for storing washing water may be provided near the toilet 7, or a so-called non-tank type in which the washing tank is not provided.

For example, when the user operates a washing operation part (not shown) for washing provided in the powder room R, toilet washing by supplying washing water to the basin 8 of the toilet 7 is performed. The washing operation part may be an operation lever, or a touch operation of the toilet washing object displayed on the operation device 10 may be used. In addition, the washing operation part is not limited to those that are manually performed by the user such as an operating lever, and it is also possible to perform toilet washing by the human body detection of a sensor that detects the user, such as a seat sensor. Can.

The toilet seat device 2 is attached to the upper part of the toilet 7, and is provided with a main body 3, a toilet lid 4, a toilet seat 5, and a washing nozzle 6. The toilet seat device 2 is mounted on the upper part of the toilet 7 in which the bowl 8 for receiving excrement is formed. The toilet seat device 2 is placed on the upper part of the toilet 7 so that the washing nozzle 6 enters the bowl 8 before spraying washing water. In addition, the toilet seat device 2 may be attached to the toilet 7 so as to be detachable, or may be attached so as to be integrated with the toilet 7.

As shown in FIG. 1, the toilet seat 5 is formed in a ring shape having an opening 50 in the center, and is arranged along the edge 9 at a position overlapping the opening of the toilet 7. The toilet seat 5 is for seating the user. The toilet seat 5 functions as a seating portion that supports the buttocks of the user who is seated. And, as shown in FIG. 1, the toilet cover 4 and the toilet seat 5 are pivotally supported by the main body 3 at one end of each, and are pivoted (openable and closable) around the pivoting portion of the main body 3 as the center. Install. In addition, the toilet cover 4 is attached to the toilet seat device 2 as necessary, and the toilet seat device 2 may not have the toilet cover 4.

The washing nozzle 6 is a nozzle for spouting washing water. The washing nozzle 6 can spray washing water. The washing nozzle 6 can spray washing water to the user. The cleaning nozzle 6 is a nozzle for partial cleaning. The washing nozzle 6 is driven by a drive source such as an electric motor (the nozzle motor 61 in FIG. 4, etc.), and is configured to be able to advance and retreat to the main body cover 30 as the frame of the main body 3. In addition, the washing nozzle 6 is connected to a water source such as a water pipe (not shown). In addition, the cleaning nozzle 6 is, as shown in FIG. 1, at a position (hereinafter also referred to as "entry position") where the main body cover 30 as the frame of the main body 3 enters, the water from the water source is used The body sprays out and washes the part.

FIG. 1 shows a state in which the washing nozzle 6 is in the entering position. In addition, the cleaning nozzle 6 can also be used for cleaning in the toilet 7 (bowl 8 etc.). The washing nozzle 6 can also be switched to a partial washing mode for washing a part of the user, and a toilet washing mode for spraying water in the toilet 7. For example, the washing nozzle 6 is controlled by the control device 34 (refer to FIG. 4) of the toilet seat device 2, and may be switched to the partial washing mode and the toilet washing mode.

The operating device 10 is installed in the dressing room R. The operating device 10 is installed in a position where the user can operate. The operating device 10 is set in a position that can be operated when the user sits on the toilet seat 5. In the example shown in FIG. 1, the operating device 10 is arranged on the wall surface W on the right side viewed by the user seated on the toilet seat 5. In addition, the operating device 10 is not limited to a wall surface as long as it can be used by a user seated on the toilet seat 5, and it can be arranged in various forms. For example, the operating device 10 may be integrated with the toilet seat device 2.

The operating device 10 is connected to the toilet seat device 2 in a wired or wireless communication manner through a predetermined network (for example, the network N in FIG. 11). For example, as long as the toilet seat device 2 and the operating device 10 can send and receive information, they may be connected in any connection, and may be connected in a manner capable of wired communication, or may be connected in a manner capable of wireless communication.

The operating device 10 accepts various operations from the user through a display surface (for example, the display screen 11) through a touch panel function, for example. In addition, the operating device 10 may include switches and buttons, and may accept various operations performed by the switches and buttons. The display screen 11 is, for example, a display screen of a tablet terminal realized by a liquid crystal display or an organic EL (Electro-Luminescence) display, etc., and is a display device for displaying various information. That is, the operating device 10 accepts input from the user through the display screen 11, and also performs output to the user. The display screen 11 is a display device that displays various information.

The operating device 10 accepts a user's operation in order to suspend the control performed by the toilet seat device 2. The operating device 10 accepts a user's operation in order to start the partial washing performed by the toilet seat device 2. The operating device 10 accepts instructions to the cleaning nozzle 6 made by the user. The operating device 10 accepts a user's operation to make the toilet seat device 2 output a predetermined sound. The operating device 10 is operated by a user to perform a sterilization process for sterilizing the washing nozzle 6 (refer to FIG. 1) of the toilet seat device 2 with sterilizing water. The operating device 10 is operated by the user to adjust the force of water jetting during partial washing performed by the toilet seat device 2. The operating device 10 accepts a user's operation to adjust the volume of the sound output by the toilet seat device 2. The operating device 10 accepts a user's operation to select a language when the operating device 10 displays or vocally outputs information about the use of the toilet.

For example, the operating device 10 may display an object that accepts the aforementioned user's operation on the display screen 11, and perform various processing in accordance with the user's contact with the displayed object. For example, the operating device 10 may have the aforementioned switches and buttons that accept the user's operations, and may perform various processes in accordance with the user's contact with the switches, buttons, and the like. In addition, the foregoing is an example, and the operating device 10 may accept operations performed by a user who executes various processes.

The toilet system 1 detects various properties such as the shape, size, texture, and color of the user's excrement (stool) through various configurations and treatments described later. The toilet system 1 detects the user's defecation by optical means. That is, the toilet system 1 is a toilet system capable of detecting excrement (feces) information by optical means. For example, the toilet system 1 enters the standby mode described later by personal authentication after the user sits on the toilet seat 5 or operation of the operating device 10, and automatically enters the measurement mode when the user excretes. The toilet system 1 may provide information to a terminal device such as a user's smartphone based on the measured result.

＜2. Composition of toilet seat device＞ Next, the configuration of the toilet seat device 2 will be described with reference to FIGS. 2 and 3. 2 and 3 are perspective views showing an example of the configuration of the toilet seat device of the first embodiment. Specifically, FIG. 2 is a diagram showing a state where the cover 110 of the optical unit 100 is in a closed state (hereinafter also referred to as a "locked state"). 3 is a diagram showing a state in which the cover 110 of the optical unit 100 is removed.

As shown in FIG. 2, in the closed state of the cover 110, the components other than the cover 110 of the optical unit 100 (the light-emitting part 120 and the light-receiving part 130 in FIGS. 3 and 5, etc.) are hidden in the cover 110 Inside. In addition, the "locked state" here refers to a state in which the light receiving unit 130 is prevented from being splashed by water by the cover 110, and it also includes a configuration in which the light receiving unit 130 is not splashed by water. In the closed state of the cover 110, the cover 110 is located in front of the light-emitting part 120 and the light-receiving part 130. In this way, the cover 110 is located in front of the light receiving part 130 in the locked state. That is, in the closed state of the lid 110, the lid 110 is located in the direction from the light-emitting portion 120 and the light-receiving portion 130 toward the inside of the toilet 7. Thereby, in the closed state of the cover 110, the light emitting unit 120 and the light receiving unit 130 are covered by the main body cover 30 and the cover 110. In this way, the light-emitting part 120 and the light-receiving part 130 are arranged on the main body cover 30 as the frame. In addition, in the example of FIG. 2, although the cover 110 is formed of a non-permeable material like the main body cover 30, the cover 110 may be formed of a material different from the main body cover 30. . For example, (a part of) the cover 110 may be formed of a penetrating material, but the details on this point will be described later.

In addition, FIG. 2 shows a state where the washing nozzle 6 (refer to FIG. 1) is located at a position (hereinafter also referred to as a "storage position") housed in the main body cover 30. As shown in FIG. 2, when the washing nozzle 6 is in the storage position, the nozzle cover 60 is closed, and the washing nozzle 6 is hidden inside the nozzle cover 60. In the case of washing by the washing nozzle 6, the nozzle cover 60 will be opened, and the washing nozzle 6 will protrude from the opening 31b (refer to FIG. 5) of the main body cover 30, and the washing nozzle 6 will be transferred to the entering state.

As shown in FIG. 3, when the cover 110 is removed, the light-emitting portion 120 and the light-receiving portion 130 of the optical unit 100 are exposed from the opening 31 of the main body cover 30. For example, the state in which the lid 110 is opened (hereinafter also referred to as the “open state”) is a state in which the lid 110 is not located in front of the light emitting section 120 and the light receiving section 130 as shown in FIG. 3. Thereby, in the open state of the cover 110, the light emitting unit 120 and the light receiving unit 130 are exposed. In the open state of the lid 110, the light emitting unit 120 can irradiate light toward the excrement in the toilet 7, and the light receiving unit 130 can receive the reflected light from the excrement in the toilet 7. As described above, the cover 110 is located in front of the light receiving unit 130 in the closed state, thereby covering the front of the light receiving unit 130, and is not located in front of the light receiving unit 130 in the open state, thereby opening the front of the light receiving unit 130. The cover 110 is located between a position covering the front of the light receiving unit 130 and a position opening the front of the light receiving unit 130, and can be opened and closed freely with respect to the light receiving unit 130. In addition, the details of the open state of the cover 110 will be described later.

As shown in FIGS. 2 and 3, the toilet seat device 2 has a configuration in which the optical unit 100 is arranged at a position adjacent to the cleaning nozzle 6. In addition, the optical unit 100 is not limited to a position adjacent to the cleaning nozzle 6 but may be arranged in various positions, but this point will be described later.

＜3. Functional structure of toilet seat device＞ Next, the functional configuration of the toilet seat device 2 will be described with reference to FIG. 4. Fig. 4 is a block diagram showing an example of the functional configuration of the toilet seat device of the first embodiment. As shown in Fig. 4, the toilet seat device 2 is provided with: a human body detection sensor 32, a seating detection sensor 33, a control device 34, a solenoid valve 71, a nozzle motor 61, a cleaning nozzle 6, an optical unit 100. In addition, in FIG. 4, a part of the configuration of the toilet seat device 2 described in FIG. 1 (the main body 3, the toilet seat 5, the toilet 7, etc.) is not shown.

For example, the human body detection sensor 32, the seating detection sensor 33, and the control device 34 are installed in the main body 3 of the toilet seat device 2. In addition, although the illustration is omitted, the toilet seat device 2 has a communication device (for example, the communication device 35 in FIG. 11, etc.) that communicates with the operating device 10. For example, the communication device is realized by a communication circuit or the like. In addition, the communication device is wired or wirelessly connected to a predetermined network (for example, the network N in FIG. 11), and transmits and receives information with the operating device 10 and other information processing devices. In addition, the main body 3 may have a memory unit (the second memory 20 in FIG. 18, etc.) outside the control device 34. In this case, the toilet seat device 2 may transmit data from the control device 34 to the second memory 20 and store the data in the second memory 20. The details of this point will be described later.

The human body detection sensor 32 has a function of detecting a human body. For example, the human body detection sensor 32 is realized by a pyroelectric sensor using infrared signals. For example, the human body detection sensor 32 may be realized by a μ (micro) wave sensor or the like. In addition, the foregoing is an example. The human body detection sensor 32 is not limited to the foregoing, and various methods may be used to detect the human body. For example, the human body detection sensor 32 detects people (users, etc.) entering the dressing room R (refer to FIG. 1). The human body detection sensor 32 outputs the detection signal to the control device 34.

The seating detection sensor 33 has a function of detecting the seating of a person on the toilet seat device 2. The seat detection sensor 33 detects that the user is seated on the toilet seat 5. The seat detection sensor 33 is capable of detecting the user's seat on the toilet seat 5. The seating detection sensor 33 also functions as a seating detection sensor for detecting the user leaving the toilet seat 5. The seating detection sensor 33 detects the seating state of the user on the toilet seat 5.

For example, the seat detection sensor 33 detects the user's seat on the toilet seat 5 through the load sensor. For example, the seat detection sensor 33 is an infrared projection-receiving type distance measuring sensor, and detects that a person (user) is about to be seated on the toilet seat 5 before the human body is present around the toilet seat 5, and is seated. The user on the toilet seat 5 can also be used. In addition, the foregoing is an example. The seat detection sensor 33 is not limited to the foregoing, and various methods may be used to detect that a person is seated on the toilet seat device 2. The seat detection sensor 33 outputs the seat detection signal to the control device 34.

The control device 34 functions as a control unit that controls various configurations and processes. The control device 34 controls the nozzle motor 61, the solenoid valve 71, and the optical unit 100. The control device 34 controls the nozzle motor 61, the solenoid valve 71, and the optical unit 100 based on the signal transmitted from the operating device 10. The control device 34 controls the nozzle motor 61 based on the signal of the control instruction for partial washing transmitted from the operating device 10. The control device 34 controls the nozzle motor 61 in order to advance and retreat the washing nozzle 6. The control device 34 controls the opening and closing of the solenoid valve 71. The control device 34 controls the optical unit 100 in order to open and close the cover 110. The control device 34 transmits to the optical unit 100 control information for making the cover 110 open. The control device 34 transmits to the optical unit 100 control information for bringing the cover 110 into a locked state. The control device 34 transmits to the optical unit 100 control information for controlling the turning on or off of the light-emitting unit 120. The control device 34 controls the lid 110 to be in a locked state at a timing when it is not necessary to receive light by the light receiving unit 130 before the user is seated or when sufficient information is obtained.

The control device 34 transmits control information for controlling the function of the electronic shutter of the light receiving unit 130 to the optical unit 100. In addition, the electronic shutter of the light receiving unit 130 is different from a mechanical shutter like a so-called lens shutter in that the light receiving element 132 (photographic element) is electronically controlled to read the exposure. That is, the electronic shutter of the light receiving unit 130 is a so-called electronic shutter or an electronically controlled shutter. The control device 34 transmits control information to the nozzle motor 61, the solenoid valve 71, and the optical unit 100 in a wired manner. In addition, the control device 34 may transmit control information to the nozzle motor 61, the solenoid valve 71, and the optical unit 100 wirelessly.

The control device 34 controls the opening and closing operations of the cover 110. The control device 34 opens the cover 110 after the seating detection sensor 33 detects that the user is seated, and opens the cover before the seating detection sensor 33 detects that the user leaves the seat Section 110 is locked. In the control device 34, the light receiving unit 130 locks the cover 110 in response to receiving reflected light from excrement.

The control device 34 locks the cover 110 in conjunction with the user's instruction to the operating device 10 to operate the washing nozzle 6. The control device 34 locks the cover 110 based on the light receiving unit 130 receiving the reflected light from the washing nozzle 6 entering the bowl 8.

The control device 34 opens the cover 110 so that the central axis of the light irradiated by the light emitting unit 120 does not overlap with the cover 110 when performing the control to open the cover 110. The control device 34 controls the cover 110 to be located at a position that does not intersect the central axis of the light irradiated by the light emitting unit 120 when the cover 110 is in an open state. The control device 34 controls the cover 110 to be located outside the half-angle region of the light irradiated by the light emitting unit 120 when the cover 110 is in an open state. The control device 34 controls the light emitting unit 120 to simultaneously emit light of the same wavelength. For example, the control device 34 sets the position closer to the closed position than the state in which the lid 110 is fully opened (fully opened state) as the open state, and opens the lid 110. For example, the control device 34 sets the cover 110 outside the area of the half angle of each light-emitting element 121 and forwards the position of the fully open state as the open state, and opens the cover 110.

The control device 34 locks the cover 110 in conjunction with the operation of the washing nozzle 6. The control device 34 controls the cover 110 from the operation of the operating device 10 by the user who controls the washing nozzle 6 as a starting point. The control device 34 detects the movement of the cleaning nozzle 6 (the nozzle enters the bowl) and controls the cover 110.

The control device 34 controls so as to open the lid 110 upward when the toilet 7 is placed. The control device 34 is configured to control the cover 110 to the locked state when the washing nozzle 6 is operated. The control device 34 controls the lid 110 to be in a locked state when the washing nozzle 6 arranged in the toilet 7 operates.

The control device 34 has a measurement mode for irradiating light with a wavelength in the visible light range during the period when the seat detection sensor 33 detects that the user is seated on the toilet seat 5, and irradiating a light with an invisible light range A measurement standby mode (standby mode) of light having a wavelength or light having a wavelength closer to the invisible light region than the wavelength of the light irradiated in the measurement mode. In this case, the control device 34 switches the operation mode by switching between the measurement mode and the standby mode. The control device 34 executes the standby mode until the light receiving unit 130 receives the reflected light from the stool, and executes the measurement mode according to the light receiving unit 130 receiving the reflected light from the stool.

The control device 34 controls the light emitting unit 120 to emit light. The control device 34 controls the energization of the light-emitting element 121 and the application of voltage to the light-receiving element 132. The control device 34 sends a control instruction to open the electronic shutter to the light receiving element 132 to energize the light emitting element 121, thereby being able to receive the light receiving control of the reflected light from the stool.

The control device 34 is controlled so that after starting one light receiving control, the interval before the next light receiving control after one light receiving control is executed is 0.2 milliseconds or more. The control device 34 is controlled so that after starting one light receiving control, the interval before executing the next light receiving control is 10 milliseconds or less. The control device 34 is controlled so that, among the plurality of light-emitting elements 121, only one light-emitting element 121 is energized, and each time one light-receiving control ends, the light-emitting element 121 that is energized in the next light-receiving control is changed. After executing one light receiving control, the interval before executing the next light receiving control is 1.6 milliseconds or less. The control device 34 is in the light receiving control, and makes the energization time to the light emitting element 121 different depending on the wavelength irradiated by the light emitting element 121.

In addition, the control device 34 controls the toilet cover 4 and the toilet seat 5 as shown in FIG. 1. The control device 34 controls the toilet cover 4 and the toilet seat 5 based on the signal transmitted from the operating device 10. The control device 34 controls the toilet lid 4 based on a signal of a control instruction for opening and closing the toilet lid transmitted from the operating device 10. The control device 34 controls the toilet seat 5 in accordance with a signal of a control instruction regarding the opening and closing of the seat portion transmitted from the operating device 10. The control device 34 transmits the control information of the toilet cover 4 and the toilet seat 5 in a wired manner. In addition, the control device 34 may transmit the control information of the toilet cover 4 and the toilet seat 5 in a wireless manner.

The control device 34 determines whether the human body detection sensor 32 detects the user entering the room. The control device 34 determines whether the human body detection sensor 32 detects that the user enters the dressing room R. The control device 34 determines whether the seat detection sensor 33 detects that the user is seated. The control device 34 determines whether the seat detection sensor 33 detects that the user is seated on the toilet seat 5. The control device 34 has various configurations such as an arithmetic processing device 342 (refer to FIG. 18), a storage unit, and the like that execute calculations related to the aforementioned control. For example, the arithmetic processing device 342 is implemented by processors such as CPU (Central Processing Unit), MPU (Micro Processing Unit), ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array), and other integrated circuits. Means to achieve. In addition, the details of the configuration of the control device 34 will be described later.

The solenoid valve 71 has the function of a valve that controls the flow of fluid by an electromagnetic method. The solenoid valve 71 switches the supply and stop of tap water from a water supply pipe, for example. The solenoid valve 71 is controlled to open and close in accordance with an instruction from the control device 34.

The nozzle motor 61 is a drive source (motor) that drives the washing nozzle 6 forward and backward. The nozzle motor 61 executes control for advancing and retreating the washing nozzle 6 with respect to the main body cover 30 of the main body 3. The nozzle motor 61 executes control for advancing and retreating the washing nozzle 6 in accordance with an instruction from the control device 34.

The optical unit 100 includes a cover 110, an actuator 111, a light-emitting unit 120, and a light-receiving unit 130. The optical unit 100 functions as an excrement detecting device (an excrement measuring device). In addition, the optical unit that functions as the excrement detection device may be configured separately from the toilet seat device, which will be described later.

The cover 110 can be positioned in front of the light-emitting unit 120 and the light-receiving unit 130 and functions as a cover. The cover 110 can be located on the side (front) facing the light-emitting surface of the light-emitting portion 120. The cover 110 can be located on the side (front) where the light receiving surface of the light receiving unit 130 faces. The cover 110 is configured to reduce the possibility of the optical unit 100 being visually confirmed, and in consideration of the privacy of the user, it is preferable to be formed of a non-transparent material. For example, the cover 110 may be formed in a non-transparent state by coloring. The cover 110 may be coated with a non-transparent material (paint) on the surface. In addition, the cover 110 is not limited to a non-transparent configuration, and may be transparent. The cover 110 is arranged in front of the light receiving part 130 and can be opened and closed freely. The cover 110 can be shifted to the open state and the closed state by the actuator 111, and can be located in front of the light emitting unit 120 and the light receiving unit 130, or expose the light emitting unit 120 and the light receiving unit 130. The cover 110 is in a locked state when it is not necessary to receive light by the light receiving unit 130 before the user is seated or when sufficient information is obtained. In this way, the cover 110 can prevent the detection accuracy of the light receiving unit 130 from being reduced due to dirt.

The cover 110 is in an open state and does not intersect the central axis of the light irradiated by the light-emitting part 120. The cover 110 is located outside the half-angle area of the light irradiated by the light emitting part 120 in the open state. The lid 110 is opened upward when it is placed on the toilet 7. The cover 110 is in a closed state when the washing nozzle 6 is operated. The cover 110 is in a closed state when the washing nozzle 6 arranged in the toilet 7 is operating.

The actuator 111 is a drive source (motor) that causes the lid 110 to be in an open state or a closed state. The actuator 111 executes control to bring the lid 110 into an open state or a closed state in accordance with an instruction from the control device 34. The actuator 111 puts the cover 110 in a locked state at a timing when it is not necessary to receive light by the light receiving unit 130 before the user is seated or when sufficient information is obtained.

The actuator 111 is in the open state of the cover 110 and fixes the cover 110 at a position that does not intersect the central axis of the light irradiated by the light emitting unit 120. The actuator 111 fixes the cover 110 in the open state of the cover 110 at a position outside the half-angle region of the light irradiated by the light emitting unit 120. When the actuator 111 is placed on the toilet 7, the lid 110 is opened upward. The actuator 111 causes the lid 110 to be in the closed state when the washing nozzle 6 is operated. The actuator 111 causes the lid 110 to be in a locked state when the washing nozzle 6 arranged in the toilet 7 is operated.

The light emitting unit 120 irradiates light. The light emitting unit 120 has a light emitting element 121 (refer to FIG. 5) that irradiates light. The light emitting unit 120 irradiates the excrement excreted by the user with light. The light emitting unit 120 irradiates the stool excreted by the user with light. The light-emitting part 120 irradiates the falling stool with light.

The light-emitting part 120 is provided with a light-emitting element 121 that irradiates light. The light-emitting part 120 is provided with a light-emitting element 121 that irradiates light forward. The light-emitting part 120 is provided with a light-emitting element 121 that irradiates the excrement excreted by the user forward.

The light emitting unit 120 irradiates light forward. The light-emitting unit 120 is arranged such that the central axis of the light-emitting unit 120 is parallel to the central axis of the light-receiving unit 130 or is inclined in a direction approaching the central axis of the light-receiving unit 130 on the front side. Here, the central axis of the light receiving unit 130 is a line that passes through the center of the lens 131 and intersects the lens 131 perpendicularly. The light emitting unit 120 is arranged such that the direction of the central axis of the light emitting unit 120 is inclined obliquely with respect to the central axis of the light receiving unit 130. The central axis of the light receiving unit 130 may be, for example, a central axis extending in the thickness direction of the lens 131 of the light receiving unit 130 and passing through the center of the lens 131. In addition, when the light receiving unit 130 does not have the lens 131, the central axis of the light receiving unit 130 may be, for example, a central axis extending in the thickness direction of the light receiving element 132 of the light receiving unit 130 and passing through the center of the light receiving element 132. The light-emitting part 120 is arranged so that the direction of the central axis of each light-emitting element 121 is inclined obliquely with respect to the central axis of the light-receiving element 132. The light emitting unit 120 irradiates light to the front of the stool excreted by the user.

The light-emitting unit 120 includes a plurality of light-emitting elements 121. The light-emitting unit 120 includes a plurality of light-emitting elements 121 that irradiate light. The light-emitting part 120 is provided with a plurality of light-emitting elements 121 that emit light of the same wavelength. The light-emitting part 120 irradiates the fallen stool excreted by the user with light. The light emitting unit 120 is provided with a plurality of light emitting elements 121 for irradiating light of different wavelengths. Each light-emitting element 121 is arranged so that the direction of the central axis is inclined obliquely with respect to the central axis of the light-receiving element 132.

The light-emitting element 121 is arranged side by side with the light-receiving part 130 in a side view or a plan view of the main body cover 30 as a frame, or is arranged in front of the light-receiving part 130. The light emitting element 121 is arranged side by side with the lens 131 or arranged in front of the lens 131 in a side view or a plan view of the main body cover 30 as a frame.

Around the light-emitting element 121, a reflection means for making the light irradiated by the light-emitting element 121 have a single directivity toward the front is provided. The reflecting means may be an inclined surface formed by an inclined member, or may be a concave surface (outer surface of the concave portion) formed around the light-emitting element 121. The plurality of light-emitting elements 121 can respectively irradiate light of different wavelengths. The half-value angle regions of the light irradiated by the plurality of light-emitting elements 121 are arranged so as to overlap in the opening 50 of the toilet seat 5 in a plan view of the toilet seat 5. The plurality of light-emitting elements 121 are arranged so that the half-value angle regions of the light irradiated by the plurality of light-emitting elements 121 overlap with the virtual drop position of the stool excreted by the user.

The plurality of light-emitting elements 121 are arranged around the light-receiving part 130. Compared to the light-emitting element 121 used only in the measurement mode, the light-emitting element 121 used in the standby mode is arranged above when placed on the toilet 7. The number of light-emitting elements 121 used in the standby mode is smaller than the number of light-emitting elements 121 used in the measurement mode. The plurality of light-emitting elements 121 are arranged above the light-receiving part 130 when placed on the toilet 7. In addition, the details of the configuration of the light-emitting unit 120 and the light-emitting element 121 will be described later.

The light receiving unit 130 receives light. The light receiving unit 130 has a lens 131 (refer to FIG. 5) and a light receiving element 132 (refer to FIG. 13) that receives light. The light receiving unit 130 receives the reflected light from excrement with respect to the light irradiated by the light emitting unit 120. The light receiving unit 130 receives reflected light from stool to the light irradiated by the light emitting unit 120. The light receiving unit 130 receives reflected light from falling stool with respect to the light irradiated by the light emitting unit 120.

The light receiving unit 130 is provided with a light receiving element 132 that receives light. The light receiving unit 130 includes a lens 131 for condensing light to the front of the light receiving element 132. Around the light receiving element 132, a housing 133 as a cover for suppressing the incidence of light from other than the front of the light receiving element 132 is provided. Around the light receiving element 132, there is provided a housing 133 as a cover for suppressing light other than the light passing through the lens 131 arranged in the front from entering the light receiving element 132. Around the light receiving element 132, a housing 133 as a cover for suppressing the incidence of light from the side direction of the light receiving element 132 is provided.

The housing 133 functions as an incidence suppression cover that shields and attenuates light from outside the front of the light receiving element 132. The housing 133 is colored in a color that is impenetrable to light such as black. In addition, as long as the housing 133 can be formed into a predetermined shape, various materials such as resin may be used. The light receiving unit 130 receives reflected light from stool to the light irradiated by the light emitting unit 120. The light receiving unit 130 receives reflected light from falling stool with respect to the light irradiated by the light emitting unit 120. The light receiving unit 130 receives reflected light from stool to the light irradiated by the light emitting unit 120. In addition, the details of the configuration of the light receiving unit 130 will be described later.

<4. Opening and closing of the lid> Here, the opening and closing of the cover 110 of the optical unit 100 will be described with reference to FIG. 5. Fig. 5 is a diagram showing an example of the opening and closing operation of the lid. Specifically, FIG. 5 is a diagram showing an example of the operation of the lid 110 to transition between the open state and the closed state. The cover 110 is driven by the actuator 111 to shift between the open state and the closed state. In addition, in FIG. 5, corresponding to the position of the cover 110, the cover parts 110-1 to 110-4 are used for description, but unless they are specifically distinguished and described, they are simply referred to as the "cover 110". In addition, in FIG. 5, in order to show the opening and closing of the cover 110, only a part of the main body cover 30 is shown, and the illustration of the nozzle cap 60 and the like covering the opening 31b for the washing nozzle 6 is also omitted. As shown in FIG. 5, the main body cover 30 is provided with two openings, an opening 31 for the optical unit 100 and an opening 31b for the cleaning nozzle 6. The opening 31 for the optical unit 100 can be covered by the cover 110. In addition, the opening 31b for cleaning the nozzle 6 can be covered by the nozzle cover 60. For example, the opening 31b is provided in the center part of the rear side of the toilet 7, and the opening 31 is provided in the position adjacent to the opening 31b.

The cover 110-1 shown in FIG. 5 shows the cover 110 in a closed state. The cover 110-1 in the locked state is located in front of the light-emitting part 120 and the light-receiving part 130. The cover 110-1 is in a state of being substantially on the same surface as the main body cover 30, and covers the front of the light-emitting unit 120 and the light-receiving unit 130. In this way, the main body cover 30, which is a frame, is located in front of the light emitting unit 120 and the light receiving unit 130.

The cover 110 is located at the position of the cover 110-1 before the user of the powder room R takes a seat on the toilet seat 5 or when the cleaning nozzle 6 is in motion, when the detection of defecation is completed, etc., Become a locked state. Thereby, the cover 110 can prevent the light-emitting unit 120 and the light-receiving unit 130 from being exposed, and can prevent the user from visually confirming the light-emitting unit 120, the light-receiving unit 130, or the light-emitting unit 120 and the light-receiving unit 130 when entering the dressing room R. Splash and so on.

The cover 110 is located at the position of the cover 110-1 under the control of the actuator 111 by the control device 34, and is in a locked state. In addition, the lid 110 is shifted from the closed state to the open state by the control of the actuator 111 by the control device 34. In addition, the lid portion 110 is sequentially shifted to the positions of the lid portions 110-1, 110-2, 110-3, and 110-4, and shifted from the closed state to the open state. For example, the cover 110 is transferred from the closed cover 110-1 to the open state after the user of the powder room R is seated on the toilet seat 5 or when the operation of the washing nozzle 6 ends.盖部110-4.

The cover 110 uses one end side of the upper end adjacent to the opening 31 of the main body cover 30 as an axis, and performs an opening and closing operation on the main body cover 30. The cover 110 rotates with one end side as an axis, thereby moving the other end opposite to the one end from the bottom to the top. In this way, in the example of FIG. 5, the cover 110 rotates the main body cover 30, thereby transferring from the cover 110-1 in the closed state to the cover 110-4 in the open state.

The cover parts 110-2 and 110-3 show the state in the middle of the transition from the cover part 110-1 in the closed state to the cover part 110-4 in the open state. In this way, by gradually moving the other end of the cover 110 upward from the cover 110-1 to the cover 110-2, 110-3, and 110-4, the light emitting unit 120 and the light receiving unit 130 are exposed. Specifically, by moving the other end of the cover 110 upward, the light-emitting element 121 of the light-emitting unit 120 and the lens 131 of the light-receiving unit 130 are exposed from the opening 31 of the main body cover 30.

As described above, the open cover 110-4 is located above the light emitting unit 120 and the light receiving unit 130, thereby avoiding the influence of external light (lighting in the dressing room R, etc.) on the light emitting unit 120 and the light receiving unit 130 , And it is possible to prevent water from above from splashing on the light emitting unit 120 and the light receiving unit 130.

In addition, the lid 110 is shifted from the open state to the closed state by the control of the actuator 111 by the control device 34. In addition, the transition from the open state to the closed state is the opposite of the aforementioned transition from the closed state to the open state, so detailed descriptions are omitted. , 110-2, 110-1 transition, and transition from the open state to the locked state. The cover 110 is rotated with one end side as an axis, thereby moving the other end to a position from top to bottom. For example, the cover 110 is the cover from the open state after the user of the powder room R leaves the toilet seat 5, when the action of the washing nozzle 6 ends, when the detection of defecation ends, etc. The portion 110-4 shifts to the lid portion 110-1 in the closed state.

In addition, in the example of FIG. 5, the cover 110 is opened and closed with respect to the main body cover 30 with one end side adjacent to the upper end of the opening 31 of the main body cover 30 as the axis, and opens and closes in the vertical direction, but the cover The structure of the part 110 is not limited to the example of FIG. 5, It can take various forms. For example, the cover 110 may be configured to be housed in a storage section provided on the upper end side of the opening 31 of the main body cover 30. For example, the cover 110 may be configured as a gate (louver) connecting several elongated members. In addition, for example, the cover 110 may open and close the main body cover 30 with one of the ends adjacent to the opening 31 of the main body cover 30 in the horizontal direction as an axis, and may perform the opening and closing operations in the horizontal direction. In addition, for example, the cover 110 can be separated into a plurality of parts, and is not limited to a single-split structure, and may be a double-split structure.

＜5. Window department＞ The cover 110 is entirely formed of a non-permeable (low) permeable material, but a part of the cover may be permeable. The details on this point will be described later. Fig. 6 is a diagram showing an example of an optical unit having a window.

In the example of FIG. 6, the optical unit 100 includes a cover 110A having a window 1101 through which light passes, a light emitting unit 120 having a plurality of light emitting elements 121, and a light receiving unit 130. The cover 110A has a window 1101 in a frame surrounding the periphery. The window portion 1101 can be formed of any material as long as it allows the light irradiated by the light-emitting portion 120 to penetrate and the light received by the light-receiving portion 130 to penetrate. In addition, the term “light” here is not limited to visible light, but also includes invisible light such as infrared rays.

In the example of FIG. 6, the light-emitting part 120 and the light-receiving part 130 of the optical unit 100 are arranged in the housing 101. In this way, the housing 101 is provided with the light-emitting unit 120 and the light-receiving unit 130. In addition, the cover 110A is supported by the end of the frame 101 and is located in front of the light-emitting unit 120 and the light-receiving unit 130. In this way, the end of the frame body 101 is positioned in front of the light-emitting unit 120 and the light-receiving unit 130.

In the example of FIG. 6, the cover 110A is arranged such that the window 1101 is located in front of the light emitting unit 120 and the light receiving unit 130, and is configured to enable the optical unit 100 to detect without opening and closing the cover 110A Defecation. In addition, the cover 110A may be a fixed position with respect to the frame body 101, and may be opened and closed with respect to the frame body 101. In addition, the analog-to-digital converter 341 and the arithmetic processing device 342 for the control device 34 will be described later.

＜6. Other device configuration and arrangement examples＞ In addition, the device configuration and the arrangement of the optical unit are not limited to those described above, and various configurations and arrangements are also possible.

＜6-1. Other configuration examples of optical unit＞ For example, the optical unit is not limited to the main body cover 30 of the main body 3, and may be arranged in various positions. This point will be described using FIGS. 7 and 8. Fig. 7 is a side view showing an example of the configuration of the toilet system of the second embodiment. Fig. 8 is a perspective view showing an example of the configuration of the toilet system of the second embodiment. Specifically, FIG. 7 is a diagram showing a state where the cover 110 of the optical unit 100A is in a locked state. 8 is a diagram showing a state in which the cover 110 of the optical unit 100A is removed. In addition, the same parts as the toilet system 1 of the first embodiment are given the same reference numerals and the description thereof is appropriately omitted.

The toilet system 1A includes a toilet seat device 2A and an operating device 10 (not shown). In addition, in the toilet system 1A shown in FIGS. 7 and 8, only the configuration necessary for the description of the toilet seat device 2A is shown, and the illustration of other configurations (the operating device 10 and the like) is omitted. The toilet seat device 2A is installed in the powder room R similarly to the toilet seat device 2 (refer to FIG. 1). The toilet seat device 2A as shown in FIG. 8 is different from the toilet seat device 2 in that the main body cover 30A of the main body portion 3A does not have the opening 31 for the optical unit.

As shown in FIG. 7, in the toilet system 1A, an optical unit 100A is arranged between the edge 9 of the toilet 7 of the toilet seat device 2A and the toilet seat 5. Specifically, the optical unit 100A is arranged on the back surface 51 side opposite to the surface on which the user of the toilet seat 5 sits. The optical unit 100A is connected between the toilet seat 5 and the rim 9 and is arranged such that the lid 110, the light emitting unit 120, and the light receiving unit 130 face the inside of the toilet 7. In this way, in the toilet seat device 2A, the optical unit 100A is arranged on the back surface 51 side of the toilet seat 5, thereby reducing the possibility that the user of the powder room R can visually confirm the optical unit 100A. In addition, the optical unit 100A may be arranged in the buffer portion 52 provided on the back surface 51 of the toilet seat 5.

The cover 110 is provided on one side of the frame 101A (refer to FIG. 8) of structures other than the cover 110 that accommodates the optical unit 100A (the light-emitting unit 120, the light-receiving unit 130, etc. in FIG. 8). The cover 110 covers the opening surface of the frame 101A corresponding to the front surface side of the light-emitting unit 120 and the light-receiving unit 130. In the closed state of the cover 110, the light emitting unit 120, the light receiving unit 130, etc. are hidden behind the cover 110. In the closed state of the cover 110, the cover 110 is located in front of the light-emitting part 120 and the light-receiving part 130. That is, in the closed state of the lid 110, the lid 110 is located in the direction from the light-emitting portion 120 and the light-receiving portion 130 toward the inside of the toilet 7. Thereby, in the closed state of the cover 110, the light emitting unit 120 and the light receiving unit 130 are covered by the frame 101A and the cover 110. In addition, in the example of FIG. 7, although the cover 110 is formed of a non-permeable material like the frame 101A, the cover 110 may be formed of a material different from the frame 101A. .

As shown in FIG. 8, when the cover 110 is removed, the light emitting unit 120 and the light receiving unit 130 of the optical unit 100A are exposed from the housing 101A. For example, in the open state of the cover 110, as shown in FIG. 8, the cover 110 is not positioned in front of the light emitting unit 120 and the light receiving unit 130. Thereby, in the open state of the cover 110, the light emitting unit 120 and the light receiving unit 130 are exposed. In addition, the opening and closing operation of the frame body 101A of the lid 110 is the same as the opening and closing operation of the main body cover 30 of the lid 110, so the description is omitted. In the case of the toilet system 1A shown in FIGS. 7 and 8, the optical unit 100A is arranged outside the toilet seat device 2A. Therefore, in the toilet system 1A, there is no need to deform the design in the toilet seat device 2A in which various devices are arranged in a complicated and dense manner. The toilet seat device 2 etc.) is easy to manufacture.

＜6-2. Other device configuration examples＞ The toilet seat device and the optical unit may be formed separately. This point will be described using FIGS. 9 to 11. First, the configuration of the toilet system will be described using FIGS. 9 and 10. 9 and 10 are perspective views showing an example of the configuration of the toilet system of the third embodiment. Specifically, FIG. 9 is a diagram showing a state where the cover 110 of the optical unit 100B is in a locked state. 10 is a diagram showing a state in which the cover 110 of the optical unit 100B is removed. In addition, the same parts as those of the toilet system of the first embodiment and the toilet seat device 2A of the second embodiment are given the same reference numerals and the description thereof is omitted as appropriate.

The toilet system 1B includes a toilet seat device 2B, an optical unit 100B, and an operating device 10 (not shown). In addition, in the toilet system 1B shown in FIGS. 9 and 10, only the components necessary for the description of the toilet seat device 2B and the optical unit 100B are shown, and the illustration of other components (the operating device 10, etc.) is omitted. The toilet seat apparatus 2B is installed in the powder room R similarly to the toilet seat apparatus 2 (refer FIG. 1). The toilet seat device 2B as shown in FIG. 9 differs from the toilet seat device 2 in that the main body cover 30B of the main body portion 3B does not have the opening 31 for the optical unit, and is configured separately from the optical unit 100B. . In this way, in the toilet system 1B, the optical unit 100B functions as an excrement detection device that is different from the toilet seat device 2B. As shown in FIG. 9, the optical unit 100B as the excrement detection device is disposed in the toilet 7 formed with the basin 8 for receiving excrement.

As shown in FIG. 9, in the toilet system 1B, the optical unit 100B is hooked and arranged between the edge 9 of the toilet seat device 2B and the toilet seat 5. Specifically, the optical unit 100B is arranged by being hooked on the edge 9 by the hook portion (hook structure) of the frame body 101B housing the optical unit 100B. The optical unit 100B is arranged along the inner peripheral wall of the rim 9 so that the cover 110, the light-emitting unit 120, and the light-receiving unit 130 face the inside of the toilet 7. The frame 101B is arranged along the inner peripheral wall of the edge 9 with the main body containing the light-emitting unit 120 and the light-receiving unit 130, and is hooked on the edge by a hook provided on the opposite side of the end of the main body. Section 9.

The cover 110 is provided on one surface of the frame 101B of the structure other than the cover 110 that houses the optical unit 100B (the light-emitting unit 120, the light-receiving unit 130, etc. in FIG. 8). The cover 110 covers the opening surface of the frame 101B corresponding to the front surface side of the light emitting unit 120 and the light receiving unit 130. In the closed state of the cover 110, the light emitting unit 120, the light receiving unit 130, etc. are hidden behind the cover 110. In the closed state of the cover 110, the cover 110 is located in front of the light-emitting part 120 and the light-receiving part 130. That is, in the closed state of the lid 110, the lid 110 is located in the direction from the light-emitting portion 120 and the light-receiving portion 130 toward the inside of the toilet 7. Thereby, in the closed state of the cover 110, the light emitting unit 120 and the light receiving unit 130 are covered by the frame body 101B and the cover 110. In addition, in the example of FIG. 7, although the cover 110 is formed of a non-permeable material like the frame 101B, the cover 110 may be formed of a material different from the frame 101B. .

As shown in FIG. 10, when the cover 110 is removed, the light-emitting portion 120 and the light-receiving portion 130 of the optical unit 100B are exposed from the housing 101B. For example, in the open state of the cover 110, as shown in FIG. 10, the cover 110 is not positioned in front of the light emitting unit 120 and the light receiving unit 130. Thereby, in the open state of the cover 110, the light emitting unit 120 and the light receiving unit 130 are exposed. In addition, the opening and closing operation of the frame body 101B of the lid 110 is the same as the opening and closing operation of the main body cover 30 of the lid 110, so the description is omitted. In the case of the toilet system 1B shown in FIGS. 9 and 10, only the optical unit 100B needs to be installed in the existing toilet 7 to complete it. Therefore, in the toilet system 1B, there is no need to purchase a toilet seat device (such as the toilet seat device 2 of the toilet system 1, etc.) or a toilet device (such as the toilet device of the toilet system 1A including the optical unit 100A, the toilet seat 5, etc.), And make the purchase price lower.

＜6-2-1. Functional structure of toilet system＞ Next, the functional configuration of the toilet system 1B will be described with reference to FIG. 11. Fig. 11 is a block diagram showing an example of the functional configuration of the toilet system of the third embodiment. As shown in FIG. 11, the toilet system 1B includes a toilet seat device 2B and an optical unit 100B that communicates with the toilet seat device 2B. In addition, as described above, the toilet system 1B is provided with other devices such as the operating device 10 (not shown), but the description of the same parts as the toilet system 1, 1A, etc. is omitted.

As shown in FIG. 11, the toilet seat device 2B is equipped with: a human body detection sensor 32, a seating detection sensor 33, a control device 34B, a communication device 35, a solenoid valve 71, a nozzle motor 61, and a cleaning nozzle 6. Optical unit 100B. In addition, in FIG. 11, a part of the configuration of the toilet seat device 2 that is the same as that of FIG. 4 (the main body 3, the toilet seat 5, the toilet 7, etc.) is not shown.

The communication device 35 is realized by a communication circuit or the like, and communicates with the optical unit 100B. In addition, the communication device 35 is wired or wirelessly connected to the network N, and transmits and receives information with an information processing device such as the optical unit 100B. The communication device 35 follows the control of the control device 34B and communicates with the optical unit 100B. In addition, the communication device 35 may send and receive information with the operating device 10 and other information processing devices via the network N or other networks.

The control device 34B functions as a control unit that controls various configurations and processes. The control device 34B is the same as the control device 34 and controls the nozzle motor 61 and the solenoid valve 71. In addition, the control device 34B controls the optical unit 100B through the communication device 35. The control device 34B controls the optical unit 100B through the communication device 35 in order to open and close the cover 110. The control device 34B transmits control information for opening the cover 110 to the optical unit 100B through the communication device 35. The control device 34B transmits control information for bringing the cover 110 into the locked state to the optical unit 100B through the communication device 35. The control device 34B is the same as the control device 34. For example, it has an arithmetic processing device 342 (refer to FIG. 18) realized by various means such as a processor such as a CPU, an MPU, an ASIC, an integrated circuit such as an FPGA, etc., various memory units, etc. It's also possible.

The optical unit 100B includes a cover 110, an actuator 111, a light-emitting unit 120, a light-receiving unit 130, a control device 140, and a communication device (not shown). The optical unit 100B is the same as the optical unit 100 and functions as an excrement detection device (an excrement measurement device).

The communication device of the optical unit 100B is realized by a communication circuit or the like, and communicates with the toilet seat device 2B. In addition, the communication device of the optical unit 100B is wired or wirelessly connected to the network N, and exchanges information with information processing devices such as the toilet seat device 2B. The communication device of the optical unit 100B follows the control of the control device 140 and communicates with the toilet seat device 2B. In addition, the communication device of the optical unit 100B may transmit and receive information with the operating device 10 and other information processing devices through the network N or other networks.

The control device 140 functions as a control unit that controls various configurations and processes. The control device 140 controls various configurations of the optical unit 100. The control device 140 is a cooperative control device 34 and controls the cover 110, the actuator 111, the light emitting unit 120, and the light receiving unit 130. The control device 140 controls the cover 110, the actuator 111, the light-emitting portion 120, and the light-receiving portion 130 based on signals (control information, etc.) received from the control device 34.

The control device 140 controls the opening and closing of the cover 110. The control device 140 controls the opening and closing of the cover 110 by controlling the actuator 111. The control device 140 receives control information from the control device 34 to make the lid 110 open, and controls the actuator 111 to open the lid 110. The control device 140 receives control information from the control device 34 to make the lid 110 into a locked state, and controls the actuator 111 in such a way that the lid 110 is locked.

The control device 140 controls the light-emitting unit 120 to turn on and off. The control device 140 receives control information from the control device 34 for controlling the turning on and off of the light emitting unit 120, and controls the turning on and off of the light emitting unit 120. The control device 140 receives control information for controlling the function of the electronic shutter of the light receiving unit 130 from the control device 34 and controls the function of the electronic shutter of the light receiving unit 130. The control device 140 controls the function of the electronic shutter of the light receiving unit 130.

The control device 140 transmits control information to the cover 110, the actuator 111, the light-emitting unit 120, and the light-receiving unit 130 in a wired manner. In addition, the control device 140 may wirelessly transmit control information to the cover 110, the actuator 111, the light-emitting unit 120, and the light-receiving unit 130.

The control device 140 is the same as the control device 34 and the control device 34B. For example, it may have an arithmetic processing device realized by various means such as a processor such as a CPU, MPU, ASIC, an integrated circuit such as an FPGA, and various memory units. .

＜7. Various composition and treatment＞ Hereinafter, using the toilet system 1, the toilet seat device 2, and the optical unit 100 of the first embodiment as an example, various configurations and processing will be described. In addition, in the following description, the various configurations of the toilet system 1 may be interpreted as corresponding configurations in the toilet system 1A and the toilet system 1B. For example, the toilet seat device 2 can also be interpreted as a toilet seat device 2A and a toilet seat device 2B, and the optical unit 100 can also be interpreted as an optical unit 100A and an optical unit 100B.

<8. Example of the configuration of the light-emitting part and the light-receiving part> First, the various configurations of the light-emitting unit and the light-receiving unit will be described with reference to FIGS. 12 to 17. Regarding the configuration of the light-emitting unit 120 and the light-receiving units 130, 130A, and 130B shown in FIGS. 12 to 17, as long as the configuration can be adopted, it can be used in any of the optical units 100, 100A, and 100B. Hereinafter, the configuration of the light-emitting unit 120 and the light-receiving unit 130 shown in FIGS. 12 and 13 is described as the "first configuration", and the configuration of the light-emitting unit 120 and the light-receiving unit 130A shown in FIGS. 14 and 15 is described as The "second configuration" refers to the case where the configuration of the light emitting unit 120 and the light receiving unit 130B shown in FIGS. 16 and 17 is described as the "third configuration". For example, the configuration of the light-emitting unit 120 and the light-receiving unit 130 of the optical unit 100 may be any one of the first configuration to the third configuration shown below.

<8-1. The first configuration of the light-emitting part and the light-receiving part> First, the first configuration shown in FIGS. 12 and 13 will be described. Fig. 12 is a diagram showing an example of the configuration of the light-emitting unit and the light-receiving unit. Fig. 13 is a side view showing an example of the configuration of the light-emitting unit and the light-receiving unit.

As shown in FIGS. 12 and 13, the light-emitting portion 120 of the first configuration has six light-emitting elements 121-1, 121-2, 121-3, 121-4, 121-5, and 121-6. In addition, in the following, the light-emitting elements 121-1, 121-2, 121-3, 121-4, 121-5, 121-6, etc., are described as "light-emitting element 121" except for the case where they are specifically described differently. For example, the light emitting element 121 is an LED (Light Emitting Diode). In addition, the light-emitting element 121 is not limited to LEDs, and various elements may be used.

In addition, hereinafter, the light-emitting element 121 that irradiates light having a wavelength in the invisible light region or a wavelength close to the invisible light region is referred to as the "first light-emitting element", and the light-emitting element 121 that irradiates light having a wavelength in the visible light region is referred to as "the first light-emitting element". 2 Light-emitting element", "3rd light-emitting element", "4th light-emitting element", etc. For example, the first light-emitting element may use both the standby mode and the measurement mode described later, and the second light-emitting element may use only the measurement mode. The details of this point will be described later.

As shown in FIGS. 12 and 13, the light receiving unit 130 of the first configuration has a lens 131, a light receiving element 132, and a housing 133 for supporting the lens 131. For example, the light receiving element 132 is a line sensor. For example, the light receiving element 132 is a line sensor in which CCD (Charge Coupled Device) sensors or CMOS (Complementary Metal Oxide Semiconductor) sensors are arranged in a row. In addition, the light receiving element 132 is not limited to a line sensor (a one-dimensional image sensor), and various sensors such as an area sensor (a two-dimensional image sensor) may be used. When the optical unit 100 is an excrement detection device, the control device 140 may be provided in a rectangular member located on the back side of the light receiving element 132.

The supporting part 150 supports the light emitting part 120 and the light receiving part 130. The supporting portion 150 may be formed of various materials as long as it can support the light-emitting portion 120 and the light-receiving portion 130. The support part 150 supports the light-emitting part 120 and the light-receiving part 130 such that one side of the support part 150 (hereinafter also referred to as the “front surface”) exposes the light-emitting part 120 and the light-receiving part 130. For example, the support portion 150 supports the light-emitting portion 120 and the light-receiving portion 130 such that the lens 131 of each light-emitting element 121 and the light-receiving portion 130 is exposed. Each light emitting element 121 irradiates light in the direction in which the front surface of the support part 150 faces, and the light receiving part 130 receives light from the direction in which the front surface of the support part 150 faces. For example, each of the light emitting element 121 and the light receiving unit 130 is connected to a power supply device (not shown) on the side opposite to the front surface (back surface) of the support portion 150 to supply electric power.

As shown in FIG. 12, the light-emitting elements 121 of the light-emitting unit 120 are arranged around the light-receiving unit 130. In addition, in the first configuration, the lens 131 of the light receiving unit 130 is configured to be larger in size than the light emitting element 121 of the light emitting unit 120.

＜8-1-1. Emission wavelength and arrangement example of light-emitting element＞ Here, an example of the wavelength (emission wavelength) of the light irradiated by each light-emitting element is shown. In the example of FIG. 12, the two light-emitting elements 121 of the light-emitting elements 121-3 and 121-4 are the first light-emitting element 121 that irradiates light having a wavelength in the invisible light region or a wavelength close to the invisible light region, and the light-emitting element 121- The four light-emitting elements 121 of 1, 121-2, 121-5, and 121-6 are the second light-emitting elements 121 that irradiate visible light. In addition, each of the first light-emitting elements 121 may be irradiated with light of the same wavelength, or may be irradiated with light of different wavelengths. In addition, each of the second light-emitting elements 121 may be irradiated with light of the same wavelength, or may be irradiated with light of different wavelengths. For example, each of the second light-emitting elements 121-1 and 121-2 may be irradiated with light of the same wavelength. In addition, the light-emitting elements 121-5 and 121-6 emit light of the same wavelength, and the third light-emitting element 121 emits light having a wavelength different from that of the light emitted by the second light-emitting elements 121-1 and 121-2. -5, 121-6 are also available. For example, in order to recognize the color of excrement, it is preferable that the light-emitting unit 120 can irradiate light of more than three wavelength ranges.

For example, the wavelength range of the light irradiated by the first light-emitting element 121 (also referred to as the "first wavelength range") is a wavelength range of 700 nm or more. In this way, the first wavelength range is the wavelength of the invisible light region or a wavelength range close to the invisible light region. For example, the first spectral range corresponds to the wavelength range of infrared rays or red. In addition, for example, the wavelength range of the light irradiated by the second light-emitting element 121 (also referred to as a "second wavelength range") is a wavelength range of less than 700 nm to 600 nm or more. In this way, the second wavelength range is the wavelength range of the visible light range. For example, the second wavelength range corresponds to the wavelength range from orange to red. In addition, for example, the wavelength range of the light irradiated by the third light-emitting element 121 (also referred to as the "third wavelength range") is a wavelength range of less than 600 nm to 450 nm or more. In this way, the third wavelength range is a range in which a wavelength is shorter than the second wavelength range, and is a wavelength range of the visible light region. For example, the third wavelength range corresponds to the blue to yellow wavelength range. In addition, the respective specific numerical values of the first spectral range, the second wavelength range, and the third wavelength range described above are an example, and each wavelength range is not limited to this. The first spectral range corresponds to the wavelength range of infrared (red) light, the second wavelength range corresponds to the wavelength range of green light, and the third wavelength range corresponds to the wavelength range of blue light close to green light.

In addition, the light-emitting elements 121 irradiating the same wavelength are preferably arranged in an adjacent manner. As described above, two adjacent light-emitting elements 121-3 and 121-4 are used as the first light-emitting element 121, and two adjacent light-emitting elements 121-1 and 121-2 are used as the second light-emitting element 121. The two adjacent light-emitting elements 121-5 and 121-6 serve as the third light-emitting element 121. In addition, the first light-emitting elements 121-3 and 121-4 are preferably arranged above the other light-emitting elements 121-1, 121-2, 121-5, and 121-6. In addition, the arrangement of the first light-emitting element 121 to the third light-emitting element 121 described above is an example, and is not limited to this.

In this way, the toilet system 1 uses a light-emitting unit 120 having light-emitting elements 121 (LEDs) corresponding to three wavelength ranges, and a light-receiving unit 130 having a line sensor, etc., to perform excretion for the user. Detection of objects. In addition, the toilet system 1 is not limited to 3 wavelength ranges. For example, the light emitting unit 120 having light emitting elements 121 (LED) corresponding to the 5 wavelength ranges may be used to detect the excrement of the user. . For example, in FIGS. 12 and 13, the two light-emitting elements 121 of the first light-emitting elements 121-3 and 121-4 irradiate light in the first spectral range, and the remaining four light-emitting elements 121-1, 121-2, 121- 5, 121-6 may be irradiated with light of different wavelength ranges (the second wavelength range to the fifth wavelength range). In this case, the first spectral range may be the longest wavelength side, and the second wavelength range, the third wavelength range, the fourth wavelength range, and the fifth wavelength range may be the short wavelength range in this order. In addition, the configuration for detecting the excrement of the user is not limited to the aforementioned ones, for example, it is formed by a light-emitting part having a light-emitting element (LED) that irradiates white light and a light-receiving part having a light-splitting function such as a spectroscopic filter. It can be done.

<8-2. The second configuration of the light-emitting part and the light-receiving part> Next, the second configuration shown in FIGS. 14 and 15 will be described. Fig. 14 is a diagram showing another example of the configuration of the light-emitting unit and the light-receiving unit. Fig. 15 is a side view showing another example of the configuration of the light-emitting unit and the light-receiving unit. In addition, descriptions of the same points as those of the first configuration are appropriately omitted.

As shown in FIGS. 14 and 15, the light-emitting portion 120 of the second configuration has six light-emitting elements 121. The light receiving unit 130A of the second configuration has a lens 131A, a light receiving element 132, and a housing 133A for supporting the lens 131A. The support part 150A is the same as the support part 150 and supports the light emitting part 120 and the light receiving part 130A.

As shown in FIG. 14, the light-emitting elements 121 of the light-emitting part 120 are arranged around the light-receiving part 130A. In the second configuration, the lens 131A of the light receiving unit 130A and the light emitting element 121 of the light emitting unit 120 have the same size. Therefore, by appropriately adjusting the arrangement of the light-emitting portion 120 (each light-emitting element 121), the overall size can be reduced compared with the first configuration.

<8-3. The third configuration of the light-emitting part and the light-receiving part> Next, the third configuration shown in FIGS. 16 and 17 will be described. FIG. 16 is a diagram showing an example of the configuration of the light-emitting part and the light-receiving part using a cylindrical lens. FIG. 17 is a side view showing an example of the configuration of the light-emitting part and the light-receiving part using a cylindrical lens. In addition, descriptions of the same points as those of the first configuration and the second configuration are appropriately omitted.

As shown in FIGS. 16 and 17, the light-emitting portion 120 of the third configuration has six light-emitting elements 121. The light receiving unit 130B of the third configuration has a lens 131B as a cylindrical lens, a light receiving element 132B, and a housing 133B for supporting the lens 131B. The light receiving element 132B is a line sensor. In this way, the light-receiving portion 130B of the third configuration is composed of a lens 131B as a cylindrical lens and a light-receiving element 132B as a line sensor. The support part 150B is the same as the support part 150 and supports the light emitting part 120 and the light receiving part 130B.

As shown in FIG. 16, the light-emitting elements 121 of the light-emitting part 120 are arranged around the light-receiving part 130B. In addition, in the third configuration, the light receiving element 132B is a line sensor, and the lens 131B is a cylindrical lens. The light-receiving element 132B as a line sensor is a long sensor in a single direction (horizontal), so if the lens is made circular, the lens must be installed even in the area where there is no line sensor (light-receiving element 132B) . On the other hand, as shown in the third configuration, by adopting a cylindrical shape (cylindrical lens) long in a single direction (horizontal), the lens can be provided only in the area with the sensor. Compared with the configuration, the overall size (especially in the height direction) can be reduced in size.

In any of the aforementioned first to third configurations, the optical axis (central axis) of the light-emitting element 121 is inclined with respect to the central axis of the light receiving section 130 (lens 131), and details of this point will be described later. In addition, the optical axis of the light-emitting element 121 is an axis that passes through the strongest illuminance at a position equidistant from the light-emitting element 121. In addition, a position where half of the illuminance of the optical axis of the light-emitting element 121 is set as a half-value angle.

＜9. Processing of excretion information collection＞ Next, the process of collecting excretion information of the toilet system 1 will be described.

＜9-1. Composition of excretion information collection＞ First, the specific structure for realizing the collection of excretion information of the toilet system 1 will be described with reference to FIG. 18. Fig. 18 is a block diagram showing an example of the functional configuration of a toilet system related to the processing of excretion information collection. In addition, the same reference numerals are assigned to the same points as the aforementioned toilet systems 1, 1A, and 1B, and the description is appropriately omitted.

As shown in Fig. 18, the toilet system 1 includes an actuator 111, a light-emitting unit 120, a light-receiving unit 130, a control device 34, a second memory 20, and the like. In addition, in the toilet system 1 shown in FIG. 18, only the components necessary for the description of the excretion information collection are shown, and the illustration of the other components (the operating device 10, etc.) is omitted. In addition, like the toilet system 1B, when the optical unit 100B functions as an excrement detection device that is different from the toilet seat device 2B, the configuration and processing of the control device 34 described below are interpreted as the control device 140 The composition and processing of the can also be used.

The actuator 111 is a driving source that causes the lid 110 to be in an open state or a closed state. The light-emitting portion 120 has a plurality of light-emitting elements 121 such as a first light-emitting element 121-3 and a second light-emitting element 121-1. In addition, the light-emitting unit 120 is configured to have only one light-emitting element, and the light-emitting element may emit light of a plurality of wavelengths. That is, the light emitting unit 120 may have only one light emitting element that emits invisible light and visible light. In this way, the light-emitting portion 120 may have only one light-emitting element having the functions of both the first light-emitting element and the second light-emitting element. The light receiving unit 130 has a lens 131 and a light receiving element 132.

The control device 34 of the toilet seat device 2, the analog-to-digital converter 341, the arithmetic processing device 342, the ROM 343, and the first memory 344.

The analog-to-digital converter 341 is a so-called A/D converter, which has the function of converting an analog signal into a digital signal. The analog-digital converter 341 may be an analog-digital conversion circuit. For example, the analog-to-digital converter 341 converts the analog data received (detected) by the light receiving unit 130 into digital data. The analog-to-digital converter 341 converts the analog data in which the data in the predetermined range has been deleted among the analog data into digital data. For example, the analog-to-digital converter 341 leaves only data corresponding to pixels in a preset range (for example, a predetermined range in the center), and deletes data corresponding to pixels in the remaining range. In addition, when the light-receiving element 132 uses a line sensor set with the number of pixels, etc. as a dedicated sensor for excrement detection, the analog-to-digital converter 341 does not delete data in a predetermined range, and It converts all analog data into digital data.

The arithmetic processing device 342 is realized by various means such as a CPU and a microcomputer, and executes various processing. For example, the arithmetic processing device 342 uses the digital data converted by the analog-to-digital converter 341 to perform various processes. The arithmetic processing device 342 executes various processes by a program (for example, an excretion determination program, etc.) stored in the ROM 343. For example, the arithmetic processing device 342 is realized by using a temporarily used memory area in the arithmetic processing device 342 as a working area to execute a program stored in the ROM 343.

The arithmetic processing device 342 analyzes the data. The arithmetic processing device 342 analyzes the data temporarily stored in the first memory 344. The arithmetic processing device 342 is executed to transmit the data received by the light-receiving unit 130 to the first memory 344, and analyze and delete the data stored in the first memory 344. The arithmetic processing device 342 transmits the data received by the light receiving unit 130 to the first memory 344, and the data temporarily stored in the first memory 344 is analyzed as not based on the reflected light from the falling stool. In the case of data, the data can be deleted.

The arithmetic processing device 342 deletes a part of the data received by the light receiving unit 130 before transferring the data received by the light receiving unit 130 to the first memory 344. The arithmetic processing device 342 continuously stores the data in the first memory 344 when the data temporarily stored in the first memory 344 is analyzed as not based on the data of the reflected light from the falling stool, and then continues to store the data in the first memory 344 Continuing here, the data temporarily stored in the first memory 344 is analyzed as not based on the data of the reflected light from the falling stool when the predetermined period or more has elapsed. The basis for storing the data in the first memory 344 comes from The data of the reflected light of the dropped stool is transmitted to the second memory 20. The arithmetic processing device 342, when the amount of data temporarily stored in the first memory 344 based on the reflected light from the falling stool is greater than a predetermined threshold value, the data stored in the first memory 344 is derived from the drop The data of the reflected light of the stool is transmitted to the second memory 20.

ROM343 is a so-called ROM (Read Only Memory), and it stores various programs such as excretion judging programs.

The first memory 344 is a memory device (memory) that temporarily stores various data. The first memory 344 stores the data received by the light receiving unit 130. The first memory 344 stores the digital data converted by the analog-to-digital converter 341. For example, the first memory 344 is SRAM (Static Random Access Memory). The first memory 344 is not limited to SRAM, and other RAM (Random Access Memory) such as DRAM (Dynamic Random Access Memory), PROM ( Programmable Read Only Memory) and other ROM capable of high-speed processing.

The first memory 344 stores data in accordance with the control of the arithmetic processing device 342. For example, the first memory 344 is a memory device with a memory capacity of 96KB or 512KB. The data temporarily stored in the light-receiving part 130 of the first memory 344 includes the original data (analog data) detected by the light-receiving part 130 and the data processed by A/D conversion (digital material).

The second memory 20 is a memory device (memory) that stores various data. The second memory 20 stores the digital data acquired from the control device 34. For example, the second memory 20 uses EEPROM ( Electrically Erasable Programmable Read-Only Memory) etc. The second memory 20 is SD (Secure Digital) card memory, USB ( Various memory devices (memory) such as Universal Serial Bus memory are also available.

The second memory 20 is capable of transferring data stored in the first memory 344. The second memory 20 has a larger memory area than the first memory 344. For example, the second memory 20 is a memory device having a memory capacity larger than that of the first memory 344, such as 4GB. The data stored in the second memory 20 may be transferred to an external device. The toilet system 1 may wirelessly transmit the data stored in the second memory 20 to an external device such as a terminal device used by the user through the communication device of the toilet seat device 2 or the like.

In addition, the second memory 20 may be provided in the toilet seat device 2 or outside the toilet seat device 2. For example, the second memory 20 may be the MicroSD in the toilet seat device 2, and it may be an external device that is located outside the toilet seat device 2 and communicates with the toilet seat device 2 through Wi-Fi (registered trademark) (Wireless Fidelity), etc. Memory can also be used. In this case, the arithmetic processing device 43 transmits the data temporarily stored in the first memory 344 to the second memory through communication with the second memory, which is an external memory with a larger memory area than the first memory 344. Memory. In addition, the communication between the second memory 20 and the toilet seat device 2 is not limited to Wi-Fi (registered trademark), and various communication standards can be used, such as communication via ZigBee (registered trademark), Bluetooth (registered trademark), etc. It's also possible.

＜9-2. Control flow of the processing of excretion information collection＞ Next, the control flow of the process of collecting excretion information of the toilet system 1 will be described with reference to FIG. 19. Fig. 19 is a conceptual diagram showing the control flow of the process of collecting excretion information.

First, the toilet system 1 detects that the user enters the dressing room R (step S1). The toilet system 1 detects the user entering the dressing room R based on the human body detection performed by the human body detection sensor 32.

Next, the toilet system 1 detects that the user is seated on the toilet seat 5 in the dressing room R (step S2). The toilet system 1 is based on the seating detection performed by the seating detection sensor 33 to detect that the user is seated on the toilet seat 5 in the dressing room R.

Next, the toilet system 1 prepares for shooting (step S3). The toilet system 1 performs personal authentication for users entering the dressing room R. For example, the toilet system 1 performs personal authentication of the user through the operation of the operating device 10 by the user and the communication with the mobile terminal owned by the user. In addition, as long as the toilet system 1 can perform personal authentication for the user entering the dressing room R, any method may be used to perform the personal authentication of the user. The toilet system 1 obtains the user's consent for defecation detection. For example, the toilet system 1 obtains the user's consent for detection through the user's operation of the operating device 10 and the communication with the mobile terminal owned by the user. Moreover, as long as the toilet system 1 can perform personal authentication for the user entering the dressing room R, any method may be used to obtain the user's consent for detection. For example, in the toilet system 1, when the user's consent is obtained, the cover 110 of the optical unit 100 is opened and moved to a state capable of detecting defecation performed by the user. Next, the toilet system 1 acquires initial data. The toilet system 1 acquires the data taken after the user is seated on the toilet seat 5 in a state where there is no defecation performed by the user as the initial data. In addition, the toilet system 1 uses the initial data that does not include the reflected light from excrement, which is first stored in the first memory 443 after sitting down, for the subsequent excretion determination. In addition, according to the number of wavelengths of the light-emitting element 121, the number of initial data stored will also vary.

Next, the toilet system 1 performs excretion detection (step S4). The toilet system 1 performs excretion detection by a mode of waiting for the user's excretion (also referred to as "standby mode") and a mode of measuring the user's excretion (also referred to as "measurement mode"). For example, in the toilet system 1, in the standby mode, only a part of the light-emitting elements 121 (first light-emitting elements 121) are irradiated with light, and the dropping of excrement from the user is detected. In this way, in the standby mode, for example, only the first light-emitting element 121 that irradiates light in the invisible light region or a wavelength range close to the invisible light region (first wavelength range) among the light-emitting elements 121 of each wavelength is turned on. For example, in the standby mode, only the first light-emitting element 121 that irradiates light in the wavelength range of 700 nm or more (the first wavelength range) among the light-emitting elements 121 of each wavelength is turned on. That is, in the standby mode, only the light emitting element 121 irradiating light in the first wavelength range among the aforementioned first wavelength range, second wavelength range, and third wavelength range is turned on. In addition, the toilet system 1 detects the dropping of excrement in the standby mode, and switches the mode to the measurement mode. For example, in the toilet system 1, the light-emitting elements 121 of each wavelength are sequentially lit in the measurement mode, and the dropped excrement is measured (detected). In this way, in the measurement mode, for example, the light-emitting elements 121 of each wavelength including the first light-emitting element 121 that irradiates a wavelength in the invisible light region or a wavelength range close to the invisible light region (the first wavelength range) are sequentially lit. . For example, in the measurement mode, the light-emitting elements 121 of each wavelength including the first light-emitting element 121 irradiating light in the wavelength range of 700 nm or more (the first wavelength range) are sequentially lit. That is, in the measurement mode, the light-emitting elements 121 that irradiate light of different wavelengths, such as the aforementioned first wavelength range, second wavelength range, and third wavelength range, are sequentially turned on. Next, the toilet system 1, the department conducts data analysis. For example, the toilet system 1 uses the measured data in the measurement mode to analyze the properties of the excrement such as the color and shape of the excrement of the user.

Next, the toilet system 1 displays the result (step S5). The toilet system 1, after completing the data analysis, is displayed. For example, the toilet system 1 displays on a display device (for example, the display screen 11 of the operating device 10, etc.) analysis results of the characteristics of the excrement such as the color and shape of the excrement of the user. By this, the user can confirm the properties of his own excrement. In addition, the aforementioned personal authentication may be performed after the result of step S5 is displayed. If there is no authentication, the data is deleted without storing the data in the second memory 20. In the case where the personal authentication of the user from the dressing room R is not obtained, for example, the control device 34 does not transmit the data collected during the use of the user to the second memory 20 (transmission), and deletes the material.

Next, the toilet system 1 detects that the user leaves the toilet seat 5 or leaves the powder room R (step S6). The toilet system 1 detects the user's departure from the toilet seat 5 in the dressing room R based on the departure detection performed by the seating detection sensor 33. The toilet system 1 detects the user leaving the dressing room R based on the human body detection performed by the human body detection sensor 32. The toilet system 1, after detecting that the user leaves the dressing room R, stops displaying. For example, the toilet system 1 stops the display of the result displayed on the display device (for example, the display screen 11 of the operating device 10, etc.) when the user leaves the powder room R. In this way, the toilet system 1 can appropriately protect the privacy of the user.

＜9-3. Standby mode＞ Next, the specific operation of the standby mode will be described with reference to FIG. 20 and FIG. 21. Fig. 20 is a flowchart showing an example of the processing steps in the standby mode. Fig. 21 is a diagram showing an example of a timing chart in the standby mode.

First, referring to FIG. 20, the flow of processing in the standby mode will be described. As shown in FIG. 20, in the toilet system 1, the control device 34 receives analog data from the light receiving unit 130 (step S101).

Next, in the toilet system 1, the analog-to-digital converter 341 converts the analog data into digital data (step S102). For example, the analog-to-digital converter 341 converts analog data from which data in a predetermined range is deleted into digital data. For example, the analog-to-digital converter 341 converts the analog data in which the data in the predetermined range at both ends of the analog data is deleted into digital data. Next, in the toilet system 1, the arithmetic processing device 342 stores the digital data in the first memory 344 (step S103). The arithmetic processing device 342 stores the digital data converted by the analog-to-digital converter 341 in the first memory 344. In addition, the arithmetic processing device 342 may delete part of the converted digital data and store the remaining digital data in the first memory 344.

Next, the toilet system 1 performs excretion determination (step S104). For example, in the toilet system 1, the control device 34 makes an excretion determination. For example, the control device 34 uses the excretion judging program stored in the ROM 343 and the digital data stored in the first memory 344 to perform excretion judging. For example, the control device 34 determines whether the change in the output value of the light receiving element 132 is a predetermined value or more with respect to the initial data obtained after the user is seated, thereby performing an excretion determination. For example, the control device 34 determines that the excretion has been performed when the variation in the output value of the light receiving element 132 is a predetermined value or more with respect to the initial data obtained after the user is seated. In addition, for example, the control device 34 determines that no excretion is performed when the output value of the light receiving element 132 fluctuates less than a predetermined value with respect to the initial data obtained after the user is seated.

Next, when it is determined that the toilet system 1 has discharged (step S104: Yes), the toilet system 1 ends the standby mode, and shifts to the measurement mode. That is, when the toilet system 1 determines that the light received by the light receiving element 132 is light reflected from excrement, it ends the standby mode and shifts to the measurement mode.

On the other hand, when the toilet system 1 determines that no excretion has been performed (step S104: No), the arithmetic processing device 342 deletes the digital data stored in the first memory 344 (step S105). That is, when the toilet system 1 determines that the light received by the light receiving element 132 is not light reflected from excrement, it deletes the digital data stored in the first memory 344 in step S103. In addition, the arithmetic processing device 342 may make the digital data stored in the first memory 344 in step S103 a state capable of being overwritten, such as a state capable of being deleted. Next, the toilet system 1 returns to step S101 and repeatedly performs processing.

Next, referring to FIG. 21, a timing chart of the standby mode will be described. As shown in FIG. 21, in the standby mode, it is a process of controlling various components of the toilet system 1. For example, it controls the processing of the electronic shutter of the light receiving unit 130, the first light-emitting element 121, the second light-emitting element 121, the third light-emitting element 121, the analog-to-digital converter 341, and the like, and the data transfer to the first memory 344.

The first light-emitting element 121 irradiates light having a wavelength in the invisible light region or a wavelength close to the invisible light region. In addition, the second light-emitting element 121 and the third light-emitting element 121 irradiate light having a wavelength in the visible light range. The second light-emitting element 121 and the third light-emitting element 121 irradiate light of different wavelengths. The control shown in the timing chart of FIG. 21 may be performed by the control device 34.

The electronic shutter is switched on and off at predetermined intervals. In the example of FIG. 21, the electronic shutter is controlled so that the interval from turning ON to turning ON next time is the period between time t1 and time t2 (first period). For example, when the electronic shutter is in the ON state (opened state), the light receiving element 132 of the light receiving unit 130 performs detection (photographing).

First, in the example of FIG. 21, the electronic shutter is ON at time t1. Next, after the electronic shutter is turned on, the first light-emitting element 121 is turned on and starts to emit light. The first light-emitting element 121 is turned on after time t1, and starts to emit light. That is, the first light-emitting element 121 is controlled so that the first light-emitting element 121 starts to emit light after the electronic shutter is turned on. Thereby, the light from the first light emitting element 121 is irradiated to excrement or the like, and the light receiving unit 130 receives the reflected light from the excrement or the like. In this way, the toilet system 1 collects analog data of excrement corresponding to the light irradiated by the first light-emitting element 121.

Then, after the electronic shutter is turned OFF, the analog-to-digital converter 341 is turned ON, and the analog data detected by the light receiving unit 130 is converted into digital data. That is, the analog-to-digital converter 341 is controlled such that when the electronic shutter is turned off (closed state), the analog-to-digital converter 341 converts the analog data detected by the light receiving unit 130 into digital data.

Then, after the analog-to-digital converter 341 is turned off, data is transferred to the first memory 344. That is, the arithmetic processing device 342 is controlled to start transmitting data to the first memory 344 after the analog-to-digital converter 341 completes the conversion of analog data to digital data. Thereby, the digital data of the excrement corresponding to the light irradiated by the first light-emitting element 121 is stored in the first memory 344. In this way, the toilet system 1 collects digital data of excrement corresponding to the light irradiated by the first light-emitting element 121.

Then, after the data transfer to the first memory 344 is completed, the electronic shutter is turned ON again. In the example of FIG. 21, the electronic shutter is ON at time t2. Next, after the electronic shutter is turned ON, the first light-emitting element 121 is turned ON again, and starts to emit light. The first light-emitting element 121 turns ON again after time t2, and starts to emit light. That is, the first light-emitting element 121 is controlled so that the first light-emitting element 121 starts to emit light after the electronic shutter is turned on. Then, in the standby mode, the same processing is repeated as shown in FIG. 21.

＜9-4. Measurement mode＞ Next, the specific operation of the measurement mode will be described with reference to FIGS. 22 and 23. Fig. 22 is a flowchart showing an example of the processing procedure in the measurement mode. Fig. 23 is a diagram showing an example of a timing chart in the measurement mode.

First, referring to FIG. 22, the flow of processing in the measurement mode will be described. As shown in FIG. 22, in the toilet system 1, the control device 34 receives analog data from the light receiving unit 130 (step S201).

Next, in the toilet system 1, the analog-to-digital converter 341 converts the analog data into digital data (step S202). For example, the analog-to-digital converter 341 converts analog data from which data in a predetermined range is deleted into digital data. For example, the analog-to-digital converter 341 converts the analog data in which the data in the predetermined range at both ends of the analog data is deleted into digital data. Next, in the toilet system 1, the arithmetic processing device 342 stores the digital data in the first memory 344 (step S203). The arithmetic processing device 342 stores the digital data converted by the analog-to-digital converter 341 in the first memory 344. In addition, the arithmetic processing device 342 may delete part of the converted digital data and store the remaining digital data in the first memory 344.

Next, the toilet system 1 performs excretion determination (step S204). For example, in the toilet system 1, the control device 34 makes an excretion determination. For example, the control device 34 uses the excretion judging program stored in the ROM 343 and the digital data stored in the first memory 344 to perform excretion judging. For example, the control device 34 determines whether the change in the output value of the light receiving element 132 is a predetermined value or more with respect to the initial data obtained after the user is seated, thereby performing an excretion determination. In addition, the excretion determination in step S204 may be the same as the excretion determination in step S104 in the standby mode in FIG. 21.

In addition, when the toilet system 1 determines that no excretion is performed (step S204: No), the arithmetic processing device 342 determines whether or not the period during which it is determined that the light from the excrement is not longer than a predetermined time (step S205). For example, in the toilet system 1, the control device 34 determines whether or not the period during which it is determined that the light does not come from excrement is more than a predetermined time.

The toilet system 1 ends the measurement mode when it is determined that the period during which it is determined that the light from the excrement is more than a predetermined period (step S205: Yes). In the toilet system 1, when it is determined that the period during which it is determined that the light from the excrement is longer than the predetermined period, the user's excretion is temporarily stopped or ended, and the measurement mode is ended. Then, in the toilet system 1, the arithmetic processing device 342 transfers data to the second memory 20, and then transitions to the standby mode again. For example, the arithmetic processing device 342 transfers the digital data stored in the first memory 344 to the second memory 20, and then transitions to the standby mode again.

In addition, the toilet system 1 returns to step S201 and repeats the process when it is determined that the period during which the light is not from excrement is not predetermined (step S205: No). In the toilet system 1, when it is determined that the period during which it is determined that the light does not come from excrement has not reached the predetermined period, it is assumed that the user's excretion may restart immediately, and the measurement mode is maintained.

On the other hand, when the toilet system 1 determines that excretion is performed (step S204: Yes), it is determined whether or not the period of light from the excrement is determined to be longer than a predetermined period (step S206). For example, in the toilet system 1, it is determined by the control device 34 whether or not the period during which it is determined that the light from the excrement is more than a predetermined time.

The toilet system 1 ends the measurement mode when it is determined that the period during which it is determined that the light from the excrement is more than a predetermined period (step S206: Yes). When the toilet system 1 determines that the period during which it is determined that the light from the excrement is longer than the predetermined period, it is assumed that the information about the excrement of the user has been sufficiently collected, and the measurement mode is terminated. Then, in the toilet system 1, the arithmetic processing device 342 transfers data to the second memory 20, and then transitions to the standby mode again. For example, the arithmetic processing device 342 transfers the digital data stored in the first memory 344 to the second memory 20, and then transitions to the standby mode again.

In addition, when the toilet system 1 determines that the period of light from excrement is not predetermined or longer (step S206: No), it returns to step S201 and repeats the process. In the toilet system 1, when it is determined that the period of light from the excrement has not reached the predetermined period, the information on the excrement of the user is not sufficiently collected, and the measurement mode is maintained.

Next, referring to FIG. 23, the timing chart of the measurement mode will be described. As shown in FIG. 23, in the measurement mode, various configurations and processes of the toilet system 1 are controlled. For example, it controls the processing of the electronic shutter of the light receiving unit 130, the first light-emitting element 121, the second light-emitting element 121, the third light-emitting element 121, the analog-to-digital converter 341, and the like, and the data transfer to the first memory 344. In addition, descriptions of the same points as those in FIG. 21 are appropriately omitted.

The first light-emitting element 121 irradiates light having a wavelength in the invisible light region or a wavelength close to the invisible light region. In addition, the second light-emitting element 121 and the third light-emitting element 121 irradiate light having a wavelength in the visible light range. The second light-emitting element 121 and the third light-emitting element 121 irradiate light of different wavelengths. The control shown in the timing chart of FIG. 23 may be performed by the control device 34.

The electronic shutter is switched on and off at predetermined intervals. In the example of FIG. 23, the electronic shutter is controlled so that the interval from turning ON to turning ON next time is the period between time t11 and time t12 (second period). The second period shown in FIG. 23 may be the same as the first period shown in FIG. 21.

First, in the example of FIG. 23, the electronic shutter is turned on at time t11. Next, after the electronic shutter is turned on, the first light-emitting element 121 is turned on and starts to emit light. The first light-emitting element 121 is turned on after time t11 and starts to emit light. Thereby, the light from the first light emitting element 121 is irradiated to excrement or the like, and the light receiving unit 130 receives the reflected light from the excrement or the like. In this way, the toilet system 1 collects analog data of excrement corresponding to the light irradiated by the first light-emitting element 121.

Then, after the electronic shutter is turned OFF, the analog-to-digital converter 341 is turned ON, and the analog data detected by the light receiving unit 130 is converted into digital data. Then, after the analog-to-digital converter 341 is turned off, data is transferred to the first memory 344. Thereby, the digital data of the excrement corresponding to the light irradiated by the first light-emitting element 121 is stored in the first memory 344. In this way, the toilet system 1 collects digital data of excrement corresponding to the light irradiated by the first light-emitting element 121.

Then, after the data transfer to the first memory 344 is completed, the electronic shutter is turned ON again. In the example of FIG. 23, the electronic shutter is ON at time t12. Next, after the electronic shutter is turned on, the second light-emitting element 121 is turned on and starts to emit light. The second light-emitting element 121 turns ON after time t12 and starts to emit light. That is, the second light-emitting element 121 is controlled so that the second light-emitting element 121 starts to emit light after the electronic shutter is turned on. Thereby, the light from the second light emitting element 121 is irradiated to excrement and the like, and the light receiving unit 130 receives the reflected light from the excrement and the like. In this way, the toilet system 1 collects analog data of excrement corresponding to the light irradiated by the second light-emitting element 121.

Then, after the electronic shutter is turned OFF, the analog-to-digital converter 341 is turned ON, and the analog data detected by the light receiving unit 130 is converted into digital data. Then, after the analog-to-digital converter 341 is turned off, data is transferred to the first memory 344. Thereby, the digital data of the excrement corresponding to the light irradiated by the second light-emitting element 121 is stored in the first memory 344. In this way, the toilet system 1 collects digital data of excrement corresponding to the light irradiated by the second light-emitting element 121.

Next, in the measurement mode, the same processing is repeated as shown in FIG. 23. For example, in the next iteration, the toilet system 1 makes the third light-emitting element 121 emit light, and collects digital data of excrement corresponding to the light irradiated by the third light-emitting element 121.

＜9-5. Information＞ Here, the data in the process of collecting excretion information will be described with reference to FIG. 24. Fig. 24 is a diagram showing an example of data in the process of collecting excretion information. In the following, only the configuration and processing necessary for the flow of the data are described, and the description of the light emission of the light emitting unit 120 and the like are omitted. In addition, the processing in the measurement mode is described below as an example, but the same processing may be performed in the standby mode.

First, the light receiving element 132 of the light receiving unit 130 performs detection. The light receiving unit 130 detects analog data AD1 of N pixels (N is an arbitrary number). The light receiving unit 130 transmits the detected analog data AD1 to the analog-to-digital converter 341 (step S11).

The analog-to-digital converter 341 converts the analog data AD1 of the analog value into the digital data of the digital value. For example, the arithmetic processing device 342 judges the pixels to be converted by the analog-to-digital converter 341, and determines the pixels to be converted by the analog-to-digital converter 341 among the analog data AD1 of N pixels. The arithmetic processing device 342 determines the value "n" below N, and determines the number of pixels "n" to be converted by the analog-to-digital converter 341. For example, the arithmetic processing device 342 determines a value of N or less as "n", thereby reducing the amount of data stored in the first memory 344.

The analog-to-digital converter 341 performs analog-to-digital conversion of the analog data of a predetermined pixel (n pixels) among the analog data AD1 of N pixels according to the control performed by the arithmetic processing device 342. The analog-to-digital converter 341 converts the n-pixel analog data among the N-pixel analog data AD1 to generate digital data DD1.

The analog-to-digital converter 341 stores the converted digital data DD1 in the first memory 344 (step S12). The analog-to-digital converter 341 stores the digital data DD1 in the first memory 344 in accordance with the control of the arithmetic processing device 342. In the first memory 344, such as the memory area FM1, n-pixel digital data is stored.

Next, the arithmetic processing device 342 performs arithmetic processing on the n-pixel digital data stored in the first memory 344 (step S13). For example, the arithmetic processing device 342 performs excretion determination on the n-pixel digital data (for example, the digital data DD1) stored in the first memory 344. For example, the arithmetic processing device 342 performs a threshold determination for n-m predetermined pixels among n-pixel digital data. In addition, the arithmetic processing device 342 may perform threshold determination on the digital data of n pixels.

The arithmetic processing device 342 executes processing on the first memory 344 based on the result of the threshold determination (step S14). The arithmetic processing device 342 deletes the data as shown in the memory area FM2 when the number of pixels whose output value of the light receiving element 132 fluctuates by a predetermined value or more does not reach the threshold value with respect to the initial data. That is, when it is determined that the light received by the light receiving element 132 is not light reflected from excrement, the arithmetic processing device 342 deletes the digital data (for example, the digital data DD1) stored in the first memory 344. In this way, the arithmetic processing device 342 deletes the data stored in the first memory 344 once in the case of light-receiving data that is not reflected light from excrement.

In addition, the arithmetic processing device 342 accumulates data as shown in the memory area FM3 when the number of pixels whose output value of the light receiving element 132 fluctuates by a predetermined value or more is greater than the threshold value with respect to the initial data. That is, when it is determined that the light received by the light receiving element 132 is light reflected from excrement, the digital data (for example, digital data DD1) stored in the first memory 344 is not deleted. Thereby, the arithmetic processing device 342 accumulates the data in the first memory 344 until the predetermined time or the predetermined amount is reached as shown in the memory area FM3.

＜10. Data analysis＞ Here, using FIG. 25 and FIG. 26, description will be given on data analysis on the shape and color of excrement (stool). Hereinafter, a case where the control device 34 of the toilet system 1 executes processing of data analysis on the shape and color of excrement (stool) will be described as an example.

＜10-1. Shape of excrement＞ First, the data analysis regarding the shape of excrement (stool) will be described with reference to FIG. 25. Fig. 25 is a diagram showing an example of data analysis of the shape of excrement.

The object OB1 in FIG. 25 schematically shows stool (feces) as a detection (measurement) object. Taking the object OB1 as an example, the outline of the shape of the feces measured (observed) in this way is described. In the following description, the longitudinal direction of the object OB1 is referred to as the vertical direction, and the direction orthogonal to the longitudinal direction (short-side direction) is referred to as the horizontal direction. Such an object OB1 falls in a direction along the up and down direction.

The measurement results RS1 to RS3 are graphs showing the relationship between each pixel and its reflectance. The measurement results RS1 to RS3 indicate the measurement results at each position corresponding to the vertical direction of the object OB1. The measurement result RS1 shows the measurement result corresponding to the upper end of the object OB1. The measurement result RS2 shows the measurement result corresponding to the central part of the object OB1 in the vertical direction. The measurement result RS3 shows the measurement result corresponding to the lower end of the object OB1.

The control device 34 detects the presence or absence of the reflectivity of each pixel received by the light receiving element 132. The control device 34 obtains the peak value from the reflected pixels. In each measurement result RS1 to RS3, the central part is the peak. For example, the control device 34 identifies the pixel X0 as an image with a peak in the measurement result RS2.

The control device 34 compares the reflectance difference between a pixel with a peak and an adjacent pixel, and confirms that there is a reflectance above or below a predetermined value, and it is estimated that it is reflected light from excrement . In addition, the control device 34 also handles colors in the same manner.

When the control device 34 confirms that it is the reflected light from the excrement, it further performs the same processing on the pixels adjacent to the pixel. Thereby, the control device 34 can determine the end of the excrement and estimate the width of the excrement. For example, in the measurement result RS2, the control device 34 estimates that the range from the pixel X1 to the image X2 is excrement. The control device 34 is based on the measurement result RS1, and estimates that the width L, which is narrower than the range from the pixel X1 to the image X2 in the measurement result RS2, is the width of the excrement. The control device 34 stacks the measurement results RS1 to RS3 and the like to analyze the shape of the excrement. In the example of FIG. 25, the control device 34 analyzes that the portion corresponding to the measurement result RS2 (the center portion) has the largest width, and the portion corresponding to the measurement result RS1 (the upper end portion) is the portion corresponding to the measurement result RS3. (Lower end) A shape with a narrower width.

Through the aforementioned processing, the object OB1 dropped from the user to the bowl 8 of the toilet 7 is detected. For example, as the dropping object OB1, the lower end, the center, and the upper end pass through the front of the light-emitting part 120 and the light-receiving part 130 in this order, so that they are detected in the order from bottom to top. . Specifically, the object OB1, which is the dropping excrement, is detected in the order of the measurement result RS3, the measurement result RS2, and the measurement result RS1. Thereby, the toilet system 1 can detect excrement (feces) dropped from the user. In addition, the toilet system 1 is not limited to the excrement during the fall, and detection may be performed on the excrement after falling into the water in the basin 8 after the fall.

＜10-2. Color of excrement＞ First, the data analysis on the color of excrement will be described with reference to FIG. 26. Fig. 26 is a diagram showing an example of data analysis of the color of excrement. Fig. 26 is a diagram showing an example of data analysis related to detection of blood contained in excrement. In addition, the same parts as those in FIG. 25 are assigned the same reference numerals and the like, and the description is appropriately omitted.

The object OB2 in FIG. 26 represents a virtual stool (feces), and the object OB2 is different from the object OB1 in FIG. 25 where the blood area BD is included in the center of the object OB2. The measurement results RS1 to RS3 shown in FIG. 26 correspond to the measurement results RS1 to RS3 of the object OB1 in FIG. 25 where there is no blood area BD.

The control device 34 specifies a pixel having a peak with respect to light of a wavelength having a characteristic reflectance to blood among the light of a plurality of wavelengths irradiated to the object OB2 as excrement. For example, the control device 34 specifies a pixel having a peak of 670 nm light having a characteristic reflectance for blood among the light of a plurality of wavelengths irradiated to the object OB2 as the excrement.

After that, the control device 34 calculates the reflectivity of light of other wavelengths detected by the pixel with the peak. The control device 34 estimates the color from the ratio of the reflectance of other wavelengths including 670 nm detected for the pixel. The measurement result RS4 shown in FIG. 26 shows the measurement result of the part including the blood area BD like the object OB2. For example, the measurement result RS4 shown in FIG. 26 represents the measurement result when light in the range (for example, the first wavelength range) not including 670 nm is irradiated to the part of the object OB2 including the blood region BD.

In addition, the wavelength having a characteristic reflectance for blood is not limited to 670 nm, but may be in the range of 600 nm to 800 nm. This is because in this wavelength band, when blood is attached to the stool, the reflectance to the color of blood can be significantly detected compared to the color of the stool.

Here, the relationship between excrement and blood will be described with reference to FIG. 27. Fig. 27 is a diagram showing an example of the relationship between excrement and blood. The graph GR1 shown in FIG. 27 is a graph showing the relationship between the reflection of stool for each wavelength and the reflection of blood attached to the stool.

The line FL1 in the graph GR1 of FIG. 27 represents the reflectance for each wavelength (about 600 nm to about 870 nm) of excrement (stool). As shown by the line FL1 in FIG. 27, in terms of excrement (feces), the longer the wavelength, the higher the reflectance. As shown by the line FL1 of FIG. 27, in terms of excrement (feces), the reflectance around 600 nm is the lowest, and the reflectivity around 870 nm is the highest. In addition, the line BD1 in the graph GR1 of FIG. 27 represents the reflectance for each wavelength (about 600 nm to about 870 nm) of blood (blood) attached to stool. As shown by the line BD1 in FIG. 27, in terms of blood (blood) attached to stool, the difference between the reflectance around 670 nm and the line FL1 is the smallest, and the farther from 670 nm, the greater the difference between the reflectance and the line FL1.

The graph GR1 in Fig. 27 shows that the ratio of the reflectance of stool to the reflectance of blood attached to the stool is the maximum at about 670 nm, and the smaller the farther it is from 670 nm. In this way, the graph GR1 shown in Figure 27, at a wavelength of 670nm, the ratio of the reflectance of stool to the reflectance of blood attached to the stool is larger, and the ratio of the reflectance of blood to the reflectance of stool at a wavelength of 870nm Small.

Therefore, the toilet system 1 can detect blood contained in excrement based on the aforementioned ratio of the reflectance of each wavelength. In addition, the toilet system 1 can analyze the color of excrement based on the aforementioned ratio of the reflectance of each wavelength. This point will be described using FIG. 28 and FIG. 29. Figures 28 and 29 are diagrams showing an example of data analysis of the color of excrement.

The measurement results RS11 to RS13 shown in FIG. 28 show the measurement results when excrement (stool) of different colors is used as the measurement object. For example, the color of the excrement (stool) that is the measurement target may be darkened in the order of the measurement results RS11, RS12, and RS13. For example, the measurement result RS11 is the measurement result of earthy yellow excrement (stool), the measurement result RS12 is the measurement result of brown excrement (stool), and the measurement result RS13 is the measurement result of brown excrement (stool). .

In addition, the measurement results RS11 to RS13 in Fig. 28 indicate LED#1, LED#2, and LED#3, respectively, which are the light emitting element 121 that irradiates light, and each of LED#1, LED#2, and LED#3 The curve shows the relationship between pixels and reflectivity. Each of LED#1, LED#2, and LED#3 may correspond to any one of, for example, the first light-emitting element, the second light-emitting element, and the third light-emitting element. For example, LED#1 may be the third light-emitting element, LED#2 may be the second light-emitting element, and LED#3 may be the first light-emitting element. In addition, as an example of the foregoing, each of LED#1, LED#2, and LED#3 may be a light-emitting element that irradiates light in any wavelength range.

For example, the darker the stool, the lower the reflectivity for each wavelength. In the example of FIG. 28, among the measurement results RS11 to RS13, the measurement result RS13 with the darkest color of excrement (stool) has a small reflectance for each wavelength, and a large reflectance ratio of each.

On the other hand, for example, the lighter the color of stool, the greater the reflectance for each wavelength. In the example of FIG. 28, among the measurement results RS11 to RS13, the measurement result RS11 with the lightest color of excrement (stool) has a large reflectance for each wavelength, and a small reflectance ratio of each. For example, because the closer to the lighter color, the stronger the reflection of each wavelength of light, so the lower the reflectivity of each wavelength.

Therefore, the toilet system 1 analyzes the relationship between each wavelength and the reflectance as described above, and thereby can classify the color of excrement (stool). For example, in the toilet system 1, the classification result shown in Fig. 29 is similar to RS21, and the measurement results RS11 to RS13 are classified according to the ratio of the respective reflectances of LED#1, LED#2, and LED#3 to classify each The color classification of the excrement (stool) measured.

For example, toilet system 1 uses the ratio of the reflectance of LED#1 to that of LED#2, the ratio of the reflectance of LED#3 to that of LED#2, and the excrement of each measurement result RS11～RS13 Color classification of (stool). For example, in the toilet system 1, the "reflectivity of LED#1/the reflectivity of LED#2" is the X axis, and the "reflectivity of LED#3/the reflectivity of LED#2" is the Y axis. The position of the measurement results RS11 to RS13 classifies the color of each measured excrement (stool). For example, in the toilet system 1, when the X-axis direction does not reach X1 and the Y-axis direction does not reach Y1, the color of the measured excrement (stool) is classified as "grey yellow". For example, in the toilet system 1, when the X-axis direction is greater than X1 but not X2, and the Y-axis direction is greater than Y1 but not Y2, the color of the measured excrement (stool) is classified as "brown". For example, in the toilet system 1, when the X-axis direction is X2 or more and the Y-axis direction is Y2 or more, the color of the measured excrement (stool) is classified as "scorched brown". In addition, the foregoing is an example. The toilet system 1 may use any method to classify the color of each measured excrement (stool).

＜11. Where to drop excrement＞ Here, the position where excrement (feces) is supposed to fall (virtual drop position) will be described with reference to FIG. 30. Fig. 30 is a diagram showing an example of a virtual drop position of stool. In addition, as described above, the side of the main body 3 of the toilet seat 5 is regarded as the rear, and the side away from the main body 3 of the toilet seat 5 is regarded as the front.

In the toilet system 1, various positions (ranges) can be used as imaginary drop positions of stool. For example, in the toilet system 1, the toilet seat 5 may be used as a virtual drop position of stool within the range of the opening 50 of the toilet seat 5 in a plan view. In addition, as shown below, the toilet system 1 may use a predetermined range in the range of the opening 50 as a virtual drop position of stool.

For example, the toilet system 1 may use the range DR1 in FIG. 30 as a virtual drop position of stool. Specifically, in the toilet system 1, the range DR1 located on the rear side when the opening 50 of the toilet seat 5 is divided into the front side and the rear side may be used as a virtual drop position of stool. In the toilet system 1, a range DR1 located in the rear when the opening 50 is divided into two in the front-rear direction by the center line LN2 passing through the center of the front-rear direction of the opening 50 of the toilet seat 5 may be used as a virtual drop position of stool.

For example, in the toilet system 1, the range DR2 in FIG. 30 is preferably used as the imaginary drop position of stool. Specifically, the toilet system 1 has a perfect circle with a diameter connecting the center of the center line LN2 that connects the opening 50 of the toilet seat 5 into the front side and the rear side and the left and right center rear ends of the opening 50 of the toilet seat 5 The enclosed range DR2 may be used as a virtual drop position of stool. In the toilet system 1, the center line LN1 passing through the left and right center rear ends of the opening 50 of the toilet seat 5 (the first point) and the center of the center line LN2 (the second point) is divided between the first point and the second point The range DR2 surrounded by the circle with the midpoint as the center may be used as a virtual drop position of stool.

For example, in the toilet system 1, the range DR3 in FIG. 30 is more preferably used as the imaginary drop position of stool. Specifically, the toilet system 1 includes a range DR3 surrounded by a perfect circle with a radius of 30 mm centered on a position 70 mm forward from the left and right center rear ends of the opening 50 of the toilet seat 5 as a virtual drop position of stool. Can. In the toilet system 1, the center line LN1 passing through the left and right center rear ends of the opening 50 of the toilet seat 5 (the first point) and the center of the center line LN2 (the second point), the position 70mm forward from the first point is taken as The range DR3 surrounded by a perfect circle with a radius of 30 mm in the center may be used as a virtual drop position of stool. In addition, as an example of the foregoing, the toilet system 1 can use any range as the imaginary drop position of stool.

<12. Arrangement relationship between light-emitting element and light-receiving element> From then on, the arrangement relationship between the light-emitting element 121 and the light-receiving element 132 will be described with reference to FIGS. 31 to 34. In FIGS. 31 to 34, although the case where the toilet system 1 is targeted is described as an example, it is not limited to the toilet system 1, and the toilet systems 1A and 1B may be targeted. In addition, the same symbols and the like are assigned to the same parts as the various configurations and processes described above, and the description is appropriately omitted.

＜12-1. The first arrangement form＞ First, the first arrangement form of the light emitting unit 120 and the light receiving unit 130 (hereinafter, also simply referred to as the "first arrangement form") will be described with reference to FIG. 31. Fig. 31 is a conceptual diagram showing a first arrangement form of the light-emitting part and the light-receiving part. FIG. 31 is a side cross-sectional view of the light-emitting unit 120 and the light-receiving unit 130. Fig. 31 is a conceptual diagram of the housing HS viewed from the side direction. Specifically, FIG. 31 is a side cross-sectional view showing the first arrangement form of the light-emitting unit 120 and the light-receiving unit 130 when the housing HS is viewed from the side.

For example, the frame HS is the main body cover 30 of the frame of the toilet seat device 2. In the case where the frame HS is the main body cover 30, FIG. 31 is a conceptual diagram (side sectional view) when the opening 31 of the main body cover 30 is viewed from the direction along the opening 31, that is, when the opening 31 is viewed from the horizontal direction. In this case, FIG. 31 may be a cross-sectional view of a plane orthogonal to the surface of the opening 31. In addition, the housing HS to be the object of a side view or a plan view is not limited to the main body cover 30, and may be the housings 101, 101A, 101B, and the like. The housing HS may be a housing that houses the light-emitting unit 120 and the light-receiving unit 130. For example, the housing HS may be provided inside the main body cover 30 or the housings 101, 101A, 101B, etc., and housing the light-emitting unit 120 and the light-receiving unit 130 may also be used. In addition, for the optical unit 100C in FIG. 31, in order to illustrate the arrangement relationship between the light emitting element 121 and the light receiving element 132, only one light emitting element 121 is shown, but a plurality of light emitting elements 121 may be provided. In this case, the plurality of light-emitting elements 121 are respectively arranged in a manner that satisfies the following arrangement relationship with the light-receiving element 132. The optical unit 100C may be the optical unit 100.

In the example of FIG. 31, the light-emitting part 120 and the light-receiving part 130 are arranged side by side when viewed from the side of the housing HS. In addition, in a side view of the housing HS, the light-emitting unit 120 may be arranged in front of the light-receiving unit 130. In addition, in a plan view of the housing HS, the light emitting unit 120 and the light receiving unit 130 may be arranged side by side. In addition, in a plan view of the housing HS, the light-emitting part 120 may be arranged in front of the light-receiving part 130. In this way, in a side view or a plan view of the housing HS, the light-emitting part 120 is arranged side by side with the light-receiving part 130 or arranged in front of the light-receiving part 130.

Specifically, in the example of FIG. 31, in a side view of the housing HS, the light-emitting element 121 of the light-emitting unit 120 is arranged side by side with the light-receiving element 132 of the light-receiving unit 130. More specifically, in the example of FIG. 31, in a side view of the housing HS, the light-emitting surface 121a of the light-emitting element 121 and the light-receiving surface 132a of the light-receiving element 132 are arranged side by side. The element 121 and the light receiving element 132 of the light receiving unit 130. Thereby, in the first arrangement form, the light-emitting tip EL indicating the position of the tip of the light-emitting portion 120 overlaps with the light-receiving tip RL indicating the position of the tip of the light-receiving portion 130. In addition, in the aforementioned first arrangement form, the light-emitting element 121 of the light-emitting unit 120 and the light-receiving element 132 of the light-receiving unit 130 may be arranged so that the light-emitting tip EL is positioned more forward than the light-receiving tip RL. In this way, the first arrangement form can prevent the light irradiated from the light-emitting element 121 from being directly received by the light-receiving element 132.

＜12-2. The second arrangement form＞ First, the second arrangement form of the light-emitting unit 120 and the light-receiving unit 130 (hereinafter also simply referred to as the "second arrangement form") will be described with reference to FIG. 32. Fig. 32 is a conceptual diagram showing a second arrangement form of the light-emitting part and the light-receiving part. FIG. 32 is a side cross-sectional view of the light-emitting unit 120 and the light-receiving unit 130. Fig. 32 is a conceptual diagram of the housing HS viewed from the side direction. Specifically, FIG. 32 is a side cross-sectional view showing the second arrangement form of the light-emitting unit 120 and the light-receiving unit 130 when the housing HS is viewed from the side. The second arrangement form is different from the first arrangement form at the point where the light emitting portion 120 of the optical unit 100D has the inclined surface 122. In addition, the same reference numerals and the like are assigned to the same points as the first arrangement form, and the description will be omitted as appropriate.

In the example of FIG. 32, the light-emitting part 120 has an inclined surface 122. In this way, in the second arrangement form, an inclined surface 122 is formed around the light-emitting element 121. In the example of FIG. 32, the inclined surface 122 is formed around the light-emitting element 121 by arranging an inclined member having the inclined surface 122 around the light-emitting element 121. Incidentally, the inclined surface 122 is not limited to a configuration in which inclined members are arranged, and may be formed by, for example, arranging the light-emitting element 121 in a recessed portion of the base portion (the rectangle on the back side of the light-emitting element 121 in FIG. 32, etc.). In this case, the inclined surface 122 is formed by the surface of the concave portion of the base where the light-emitting element 121 is arranged.

The inclined surface 122 has a function of reflecting the light irradiated by the light emitting element 121. The inclined surface 122 may also be formed by disposing a reflector around the light-emitting element 121. In this case, the surface (inclined surface) of the reflector disposed around the light-emitting element 121 becomes an inclined surface 122. In addition, the inclined surface 122 may be provided by coating the surface of the inclined member or the concave portion of the base with a reflective material that reflects light, or the like. Thereby, the inclined surface 122 functions as a reflecting means for giving the light irradiated by the light-emitting element 121 a single directivity toward the front. Therefore, in the second arrangement form, the light irradiated from the light-emitting element 121 is concentrated to the front, and it is possible to avoid the light irradiated from the light-emitting element 121 being directly received by the light-receiving element 132.

＜12-3. The third layout configuration＞ First, the third arrangement form of the light-emitting unit 120 and the light-receiving unit 130 (hereinafter, also referred to simply as the "third arrangement form") will be described with reference to FIG. 33. Fig. 33 is a conceptual diagram showing a third arrangement form of the light-emitting part and the light-receiving part. FIG. 33 is a side cross-sectional view of the light-emitting unit 120 and the light-receiving unit 130. Fig. 33 is a conceptual diagram of the housing HS viewed from the side direction. Specifically, FIG. 33 is a side cross-sectional view showing a third arrangement form of the light-emitting unit 120 and the light-receiving unit 130 when the housing HS is viewed from the side. The third arrangement form is different from the first arrangement form in that the light receiving unit 130 of the optical unit 100E has the lens 131 and the housing 133. In addition, the same parts as the first arrangement form and the second arrangement form are assigned the same reference numerals and the like, and descriptions are appropriately omitted.

In the example of FIG. 33, the light receiving unit 130 has a lens 131 and a housing 133 for supporting the lens 131. In this way, in the third arrangement form, the housing 133 as a cover for suppressing the incidence of light from other than the front of the light receiving element 132 is provided around the light receiving element 132. For example, the housing 133 is formed in a cylindrical shape. The housing 133 is arranged so that the cylindrical axis direction is along the central axis of the light receiving element 132 and covers the periphery of the light receiving element 132 other than the front of the light receiving element 132. Thereby, the housing 133 functions as an incidence suppression cover that shields and attenuates light from outside the front of the light receiving element 132. The housing 133 is colored in a color that is impenetrable to light such as black. Thereby, the third arrangement form can prevent light from outside the front of the light receiving element 132 from reaching the light receiving element 132, and can prevent the light irradiated from the light emitting element 121 from being directly received by the light receiving element 132. In addition, the housing 133 may be formed in any manner as long as it can have a specified color and be formed into a specified shape. For example, the housing 133 may be made of various materials such as resin, or may be formed integrally with the lens 131. In the case of integrally forming with the lens 131, only the part corresponding to the housing 133 may be colored.

＜12-4. The fourth layout configuration＞ Next, the fourth arrangement form of the light-emitting unit 120 and the light-receiving unit 130 (hereinafter, also simply referred to as the "fourth arrangement form") will be described with reference to FIG. 34. Fig. 34 is a conceptual diagram showing a fourth arrangement form of the light-emitting part and the light-receiving part. FIG. 34 is a side cross-sectional view of the light-emitting unit 120 and the light-receiving unit 130. Fig. 34 is a conceptual diagram of the housing HS viewed from the side direction. Specifically, FIG. 34 is a side cross-sectional view showing a fourth arrangement form of the light-emitting unit 120 and the light-receiving unit 130 when the housing HS is viewed from the side. The fourth arrangement form is different from the first arrangement form in that the light receiving unit 130 of the optical unit 100F has the lens 131 and the housing 133. In addition, the same reference numerals are assigned to the same parts as the first arrangement form, the second arrangement form, and the third arrangement form, and the description is omitted as appropriate.

In the example of FIG. 34, in a side view of the housing HS, the light-emitting part 120 is arranged in front of the light-receiving part 130. In addition, in a side view of the housing HS, the light-emitting unit 120 and the light-receiving unit 130 may be arranged side by side. In addition, in a plan view of the housing HS, the light-emitting part 120 may be arranged in front of the light-receiving part 130. In addition, in a plan view of the housing HS, the light emitting unit 120 and the light receiving unit 130 may be arranged side by side. In this way, in a side view or a plan view of the housing HS, the light-emitting part 120 is arranged side by side with the light-receiving part 130 or arranged in front of the light-receiving part 130. In the example of FIG. 34, the light-receiving part 130 is arranged in front of the second base part whose thickness is thinner than the first base part where the light-emitting part 120 is arranged, whereby the light-emitting part 120 and the light-receiving part 130 are arranged side by side or arranged as It is more forward than the light receiving unit 130.

Specifically, in the example of FIG. 34, in a side view of the housing HS, the light-emitting element 121 of the light-emitting unit 120 is arranged in front of the lens 131 of the light-receiving unit 130. More specifically, in the example of FIG. 34, in a side view of the housing HS, the light-emitting element of the light-emitting portion 120 is arranged such that the light-emitting surface 121a of the light-emitting element 121 is located further forward than the front end 131a of the lens 131 121 and the lens 131 of the light receiving unit 130. Thereby, in the fourth arrangement form, the light-emitting tip EL indicating the position of the tip of the light-emitting portion 120 is positioned further forward than the light-receiving tip RL indicating the position of the tip of the light-receiving portion 130. In addition, in the aforementioned fourth general arrangement form, the light-emitting element 121 of the light-emitting unit 120 and the lens 131 of the light-receiving unit 130 may be arranged so that the light-emitting tip EL and the light-receiving tip RL overlap. In this way, the fourth arrangement form can prevent the light irradiated from the light-emitting element 121 from being directly received by the light-receiving element 132.

＜13. The wavelength of the light irradiated by the light-emitting element＞ In the foregoing example, although at least one light-emitting element 121 irradiates light in the wavelength range of 450 nm or more, the relationship between the wavelength of the light irradiated by the light-emitting element 121 and the color of stool will be described with reference to FIG. 35. In addition, the same symbols and the like are assigned to the same parts as the various configurations and processes described above, and the description is appropriately omitted.

FIG. 35 is a graph showing the relationship between the wavelength of light and the reflectance of each color of simulated stool. Specifically, FIG. 35 is a graph showing the relationship between the reflectance for each wavelength of simulated stool of six different colors.

The measurement results shown in the graph GR2 in FIG. 35 are obtained by measurement under the following general measurement conditions. First, the measuring device for the measurement shown in FIG. 35 is V670 (manufactured by JASCO Corporation) which is an ultraviolet visible near infrared spectrophotometer. In addition, the measurement in FIG. 35 was performed with the wavelength range of 200 nm to 900 nm as the target. In addition, the resolution measured in FIG. 35 is 1 nm. In this way, in the measurement in FIG. 35, the measurement is performed between 200 nm and 900 nm with an interval of 200 nm, 201 nm, 202 nm,... of 1 nm.

In addition, in the measurement in FIG. 35, the reflectance was measured by diffuse reflection measurement. In addition, in the measurement in FIG. 35, a white plate with barium sulfate as a reference was used. In this way, in the measurement shown in FIG. 35, the white plate of barium sulfate was used as the white plate for calibration of the measuring device.

Next, the specifications of the simulated feces are described. First, the color of the simulated feces is yellow, light ochre (hereinafter referred to as "light ochre"), ochre, brown, burnt brown, and deep burnt brown. 6 different colors are used. First, as a method of setting up a simulated feces, a hole with a diameter of 10 mm is filled with a sample of 0.5 g and installed. The measurement in FIG. 35 is to set up the samples corresponding to each color for each of the six colors as described above, and to perform the measurement for each of the six colors.

Next, the measurement results shown in the graph GR2 will be described. The line L1, which is the solid line in the graph GR2, represents the measurement result of the simulated stool whose color is yellow. The line L2, which is the dotted line in the graph GR2, represents the measurement result of the simulated stool whose color is pale earthy yellow. The line L3, which is the broken line in the graph GR2, represents the measurement result of the simulated stool whose color is ocher. The line L4, which is a dotted chain line in the graph GR2, represents the measurement result of the simulated stool whose color is brown. The line L5, which is the long broken line in the graph GR2, represents the measurement result of the simulated stool whose color is burnt brown. The line L6, which is the two-dot chain line in the graph GR2, represents the measurement result of the simulated stool whose color is dark brown.

As shown in the graph GR2, at a wavelength of 450 nm, the reflectances indicated by the lines L1 to L6 begin to differ. In this way, when the wavelength is 450nm, there will be a sufficient difference between the reflectance of each color, and each color can be identified by the reflectance. Therefore, it is preferable that the wavelength of the light irradiated by the general light-emitting element 121 is 450 nm or more. When the light irradiated by the light-emitting element 121 has a wavelength range of 450 nm or more, it is possible to appropriately recognize which of the six colors of stool is.

In addition, the wavelength of the light irradiated by the light-emitting element 121 is 450 nm or more is just an example, and it may be appropriately set according to the design of the toilet system 1, 1A, 1B, etc., the number of recognized stool colors, and the like. For example, the wavelength of the light irradiated by the light-emitting element 121 may be 350 nm or more. In this case, at least two kinds of recognition can be performed accurately on whether the color of stool is yellow, light earthy yellow, or the other.

＜14. Irradiation of light on excrement＞ From then on, the light irradiation to excrement will be described with reference to FIGS. 36 and 37. Hereinafter, the light irradiation of excrement in the toilet system 1 of the first embodiment will be described as an example. However, the toilet system 1A of the second embodiment and the toilet system 1B of the third embodiment may also be performed in the same way. In addition, the same symbols and the like are assigned to the same parts as the various configurations and processes described above, and the description is appropriately omitted.

＜14-1. Imaginary drop position and light irradiation range＞ First, the light irradiation of excrement by the light emitting unit 120 of the optical unit 100 provided in the toilet seat device 2 will be described with reference to FIG. 36. FIG. 36 is a perspective view of a special part showing an example of overlapping light irradiation of a plurality of light-emitting elements. FIG. 36 shows a state where the cover 110 of the optical unit 100 is removed because it mainly illustrates the parts necessary to explain the light irradiation of the plurality of light-emitting elements 121. Hereinafter, the description will be made assuming that the cover 110 is in an open state.

In the example of FIG. 36, the excrement (stool) that irradiates the light of the light-emitting unit 120 and is the detection target of the reflected light of the light-receiving unit 130 is represented as a virtual stool VF. The imaginary stool VF is a schematic representation of stool dropped from the user. The imaginary stool VF is a schematic representation of stool passing (falling) through the imaginary drop position illustrated in FIG. 30. That is, the imaginary stool VF is a schematic representation of stool falling within the range of the opening 50 of the toilet seat 5 in the top view of the toilet seat 5. For example, the virtual stool VF falls within any one of the ranges DR1 to DR3 in FIG. 30 (for example, the range DR3).

In the example of FIG. 36, the cover 110 is in an open position, and the light-emitting part 120 and the light-receiving part 130 are exposed. With the cover 110 in the open position, the light emitting unit 120 irradiates the virtual stool VF with light, and the light receiving unit 130 receives the light reflected from the stool VF of the light irradiated by the light emitting unit 120 on the virtual stool VF.

The optical axis BL11 in FIG. 36 represents the optical axis (central axis) of the light irradiated by the light-emitting element 121-1. And, as shown in FIG. 36, the optical axis BL11, which is the central axis of the light irradiated by the light-emitting element 121-1, intersects the virtual stool VF.

In addition, the optical axis BL2 in FIG. 36 represents the optical axis (central axis) of the light irradiated by the light-emitting element 121-6. As shown in FIG. 36, the optical axis BL2, which is the central axis of the light irradiated by the light emitting element 121-6, intersects the virtual stool VF.

In this way, by intersecting the optical axis of each light-emitting element 121 with the virtual stool VF, the light from the light-emitting element 121 can be efficiently irradiated to excrement (stool).

In addition, the half-value angle area HW11 in FIG. 36 represents the half-value angle area of the light irradiated by the light-emitting element 121-1. As shown in FIG. 36, the half-value angle area HW11, which is the half-value angle area of the light irradiated by the light-emitting element 121-1, intersects the virtual stool VF.

In addition, the half-value angle area HW2 in FIG. 36 represents the half-value angle area of the light irradiated by the light-emitting element 121-6. As shown in FIG. 36, the half-value angle area HW2, which is the half-value angle area of the light irradiated by the light emitting element 121-6, intersects the virtual stool VF.

In this way, by intersecting the half-value angle region of the light-emitting element 121 with the virtual stool VF, the light from the light-emitting element 121 can be efficiently irradiated to excrement (stool).

In addition, in FIG. 36, although the relationship between the two light-emitting elements 121 of the light-emitting elements 121-1 and 121-6 is shown, the other four light-emitting elements 121-2 to 121-5 are also the same.

In addition, each light-emitting element 121 may be arranged such that the half-value angle of each light-emitting element 121 intersects at a virtual drop position. Thereby, the toilet system 1 can efficiently detect excrement (feces). In addition, each light-emitting element 121 may be arranged such that the optical axis of each light-emitting element 121 intersects at a virtual drop position. Thereby, the toilet system 1 can detect excrement (feces) more efficiently.

<14-2. The relationship between the central axis of the light-emitting part and the central axis of the light-receiving part＞ As described above, in the toilet system 1, the central axis of the light emitting unit 120 is arranged so that the central axis of the light emitting unit 120 is inclined in a direction approaching the central axis of the light receiving unit 130 on the front side. In the example of FIG. 36, the optical axis BL11 of the light-emitting element 121-1 and the optical axis BL2 of the light-emitting element 121-6 are arranged so as to be inclined toward the center axis RL1 of the light receiving unit 130 on the front side. In the example of FIG. 36, the central axis RL1 of the light receiving unit 130 is the central axis of the center of the lens 131 extending in the thickness direction of the lens 131 of the light receiving unit 130 and passing through. The light receiving unit 130 is arranged so that the central axis RL1 passes through the virtual drop position.

In addition, the optical axis BL11 of the light-emitting element 121-1 and the optical axis BL2 of the light-emitting element 121-6 are arranged so as to intersect the central axis RL1 of the light receiving unit 130 at the virtual drop position on the front side, and are arranged on the front side. The direction approaching the central axis of the light receiving unit 130 may be inclined. The light-emitting element 121-1 is arranged obliquely with respect to the light-receiving unit 130 such that the optical axis BL11 and the central axis RL1 of the light-receiving unit 130 intersect at a virtual drop position on the front side. The light-emitting element 121-6 is arranged obliquely with respect to the light-receiving unit 130 such that the optical axis BL2 and the central axis RL1 of the light-receiving unit 130 intersect at a virtual drop position on the front side.

The optical axis BL11 of the light-emitting element 121-1 and the optical axis BL2 of the light-emitting element 121-6 are arranged at an inclination (first inclination) parallel to the central axis RL1 of the light receiving unit 130 and intersecting the central axis RL1 of the light receiving unit 130. Within the range of the inclination (the second inclination) of, the central axis of the light receiving unit 130 may be approached from the front side. For example, the optical axis BL11 of the light-emitting element 121-1 and the optical axis BL2 of the light-emitting element 121-6 are arranged at an inclination greater than the first inclination and less than the second inclination, and are arranged so as to approach the light receiving unit 130 on the front side. The direction of the central axis may be inclined.

The light-emitting element 121-1 is such that the optical axis BL11 is located within the range of an imaginary line passing through the light-emitting element 121-1 and parallel to the central axis RL1 of the light-receiving unit 130 and the central axis RL1 of the light-receiving unit 130. Inclined configuration is also possible. The light-emitting element 121-6 is such that the optical axis BL2 is located within the range between the imaginary line passing through the light-emitting element 121-6 and parallel to the central axis RL1 of the light-receiving unit 130 and the central axis RL1 of the light-receiving unit 130. Inclined configuration is also possible.

In addition, the optical axis BL11 of the light-emitting element 121-1 and the optical axis BL2 of the light-emitting element 121-6 are arranged so that the inclination (first inclination) parallel to the central axis RL1 of the light receiving section 130 intersects at the virtual drop position Within the range of the inclination (third inclination) of the central axis RL1 of the light receiving unit 130, the central axis of the light receiving unit 130 may be approached from the front side. For example, the optical axis BL11 of the light-emitting element 121-1 and the optical axis BL2 of the light-emitting element 121-6 are arranged at an inclination greater than the first inclination and less than the third inclination, and are arranged so as to approach the light receiving unit 130 on the front side. The direction of the central axis may be inclined.

The light emitting element 121-1 is arranged so as to be larger than the first inclination parallel to the central axis RL1 of the light receiving section 130, and not reaching the third inclination that intersects the central axis RL1 of the light receiving section 130 at the imaginary drop position in the front. Within the range, the optical axis BL11 may be inclined toward the side closer to the light receiving unit 130. The light-emitting element 121-6 is arranged so as to be larger than the first inclination parallel to the central axis RL1 of the light-receiving section 130, and not to reach the third inclination that intersects the central axis RL1 of the light-receiving section 130 at the imaginary drop position in the front. Within the range, the optical axis BL2 may be inclined toward the side closer to the light receiving unit 130.

36, although the relationship between the two light-emitting elements 121 of the light-emitting elements 121-1 and 121-6 and the light-receiving portion 130 is shown, the relationship between the other four light-emitting elements 121-2 to 121-5 and the light-receiving portion 130 The relationship is also the same.

＜14-3. Irradiation of light＞ Next, referring to FIG. 37, a timing chart regarding the irradiation of light will be described. As shown in FIG. 37, during the irradiation of light, it is a process of controlling various components of the toilet system 1. As shown in FIG. For example, the process of controlling the electronic shutter of the light-receiving unit 130, the first light-emitting element 121, the second light-emitting element 121, the third light-emitting element 121, the fourth light-emitting element 121, the analog-to-digital converter 341, etc., for the first memory 344 data transmission, etc.

The first light-emitting element 121 irradiates light having a wavelength in the invisible light region or a wavelength close to the invisible light region. In addition, the second light-emitting element 121 and the third light-emitting element 121 irradiate light having a wavelength in the visible light range. The second light-emitting element 121 and the third light-emitting element 121 irradiate light of different wavelengths. In addition, in the example of FIG. 37, the fourth light-emitting element 121 irradiates light of the same wavelength as that of the second light-emitting element 121. The control shown in the timing chart of FIG. 37 may be performed by the control device 34.

The electronic shutter is switched on and off at predetermined intervals. In the example of FIG. 37, the electronic shutter is controlled so that the interval from turning ON to turning ON next time is the period between time t41 and time t42 (second period). The second period shown in FIG. 37 may be the same as the first period shown in FIG. 21.

First, in the example of FIG. 37, the electronic shutter is turned on at time t41. Next, after the electronic shutter is turned on, the first light-emitting element 121 is turned on and starts to emit light. In addition, when there is another light-emitting element 121 that irradiates light of the same wavelength as the first light-emitting element 121, the light-emitting element 121 may be controlled simultaneously with the first light-emitting element 121. The first light-emitting element 121 is turned on after time t41 and starts to emit light. Thereby, the light from the first light emitting element 121 is irradiated to excrement or the like, and the light receiving unit 130 receives the reflected light from the excrement or the like. In this way, the toilet system 1 collects analog data of excrement corresponding to the light irradiated by the first light-emitting element 121.

Then, after the electronic shutter is turned OFF, the analog-to-digital converter 341 is turned ON, and the analog data detected by the light receiving unit 130 is converted into digital data. Then, after the analog-to-digital converter 341 is turned off, data is transferred to the first memory 344. Thereby, the digital data of the excrement corresponding to the light irradiated by the first light-emitting element 121 is stored in the first memory 344. In this way, the toilet system 1 collects digital data of excrement corresponding to the light irradiated by the first light-emitting element 121.

Then, after the data transfer to the first memory 344 is completed, the electronic shutter is turned ON again. In the example of FIG. 37, the electronic shutter is ON at time t42. Next, after the electronic shutter is turned on, the second light-emitting element 121 and the fourth light-emitting element 121 are turned on and start to emit light. The second light-emitting element 121 and the fourth light-emitting element 121 are turned on after time t42 and start to emit light. That is, the second light-emitting element 121 and the fourth light-emitting element 121 are controlled so that the second light-emitting element 121 and the fourth light-emitting element 121 start to emit light after the electronic shutter is turned on. Thereby, the light from the second light emitting element 121 and the fourth light emitting element 121 is irradiated to excrement or the like, and the light receiving unit 130 receives the reflected light from the excrement or the like. In this way, the toilet system 1 collects analog data of excrement corresponding to the light irradiated by the second light-emitting element 121 and the fourth light-emitting element 121. Furthermore, in the example of FIG. 37, the fourth light-emitting element 121 has the same wavelength as the second light-emitting element 121, and therefore is controlled to emit light at the same timing as the second light-emitting element 121.

Then, after the electronic shutter is turned OFF, the analog-to-digital converter 341 is turned ON, and the analog data detected by the light receiving unit 130 is converted into digital data. Then, after the analog-to-digital converter 341 is turned off, data is transferred to the first memory 344. Thereby, the digital data of the excrement corresponding to the light irradiated by the second light-emitting element 121 and the fourth light-emitting element 121 is stored in the first memory 344. In this way, the toilet system 1 collects digital data of excrement corresponding to the light irradiated by the second light-emitting element 121 and the fourth light-emitting element 121.

Next, in the measurement mode, the same processing is repeated as shown in FIG. 37. For example, in the next iteration, the toilet system 1 makes the third light-emitting element 121 emit light, and collects digital data of excrement corresponding to the light irradiated by the third light-emitting element 121.

<14-4. The relationship between the arrangement of the light-emitting part and the light-receiving part> Here, the arrangement relationship between the light emitting unit 120 and the light receiving unit 130 will be described in further detail with reference to FIG. 38. Fig. 38 is a conceptual diagram showing the relationship between the arrangement of the light-emitting unit and the light-receiving unit. FIG. 38 is a side view of the light emitting unit 120 and the light receiving unit 130. Specifically, FIG. 38 is a conceptual diagram viewed from a direction (side direction) intersecting the thickness direction of the lens 131 of the light receiving unit 130. Moreover, in FIG. 38, although the case where the toilet system 1 is a target is demonstrated as an example, it is not limited to the toilet system 1, and may target the toilet systems 1A and 1B. In addition, the same symbols and the like are assigned to the same parts as the various configurations and processes described above, and the description is appropriately omitted.

As shown in FIG. 38, the central axis RL1 of the light receiving unit 130 is a line passing through the center of the lens 131 and perpendicularly intersecting the lens 131. In this way, the central axis RL1 is a straight line passing through the center of the lens 131 and along the thickness direction of the lens 131.

As shown in FIG. 38, the light-emitting element 121 is arranged such that the optical axis BL21 of the light-emitting element 121 is close to the central axis RL1 of the light receiving unit 130. The light-emitting element 121 is arranged so that the optical axis BL21 of the light-emitting element 121 is inclined in a direction approaching the central axis RL1 of the light receiving unit 130 on the front side. In this way, the light-emitting unit 120 is arranged such that the direction of the optical axis BL21 of the light-emitting unit 120 is inclined obliquely with respect to the central axis RL1 of the light-receiving unit 130. Thereby, the light irradiated along the optical axis BL21 of the light-emitting unit 120 with the largest amount of light from the light-emitting unit 120 to the stool is reflected toward the central axis RL1 of the light-receiving unit 130. Therefore, it is possible to avoid a situation where the light amount of the reflected light from stool received by the light receiving unit 130 is insufficient.

The parallel line PL1 shown in FIG. 38 indicates the optical axis of the light-emitting unit 120 when it is parallel to the central axis RL1 of the light-receiving unit 130. As shown in FIG. 38, the optical axis BL21 of the light emitting element 121 is inclined to the central axis RL1 side of the light receiving unit 130 from the parallel line PL1. In this way, the light-emitting element 121 is arranged such that the optical axis BL21 of the light-emitting element 121 is inclined to the central axis RL1 side of the light-receiving unit 130 compared to the optical axis of the light-emitting unit 120 when it is parallel to the central axis RL1 of the light-receiving unit 130.

In addition, in the example of FIG. 38, the reflection axis RF21 is an axis indicating a state where the optical axis BL21 of the light-emitting element 121 is reflected by the virtual stool VF (mirror surface). In this way, the light emitting element 121 is arranged to be inclined toward the light receiving unit 130 so that the reflection axis RF21 overlaps the center of the lens 131. Moreover, as long as the light-emitting element 121 inclines the optical axis BL21 of the light-emitting element 121 toward the center axis RL1 side of the light receiving unit 130, the reflection axis RF21 is not limited to the case where the reflection axis RF21 overlaps the center of the lens 131, and various arrangements can be made. For example, the light-emitting element 121 may be arranged such that the optical axis BL21 of the light-emitting element 121 is arbitrarily inclined within a range between the parallel line PL1 and the central axis RL1 of the light receiving section 130, and may be arranged obliquely toward the light receiving section 130 side. In addition, the light-emitting element 121 may be any of the light-emitting elements 121-1 to 121-6.

In addition, the aforementioned embodiments and modification examples can be appropriately combined within a range that does not cause conflicts in the processing content.

Further effects and modified examples can be easily derived by a person having ordinary knowledge in the technical field to which the invention belongs. Therefore, the broader aspects of the present invention are not limited to the specific details and representative embodiments shown and described above. Therefore, various changes can be made without departing from the spirit or scope of the overall concept of the invention defined by the scope of the attached patent application and its equivalents.

R: powder room F: Floor surface W: wall surface 1, 1A, 1B: toilet system 2, 2A, 2B: toilet seat device 20: 2nd memory 3, 3A, 3B: body part 30, 30A, 30B: body cover (frame) 31: opening 31b: opening 32: Human body detection sensor 33: Seating detection sensor 34, 34B: Control device (control part) 341: Analog to Digital Converter 342: arithmetic processing device 343: ROM 344: first memory 4: toilet lid 5: toilet seat 50: opening 51: inside 52: Buffer 6: Wash the nozzle 60: Nozzle cap 61: Nozzle motor 7: Western-style toilet (toilet) 71: Solenoid valve 8: Basin 9: Margin 10: Operating device 11: Display screen 100, 100A, 100B, 100C, 100D, 100E, 100F: optical unit 101, 101A, 101B: frame 110,110-1,110-2,110-3,110-4: cover part 110A: Cover 1101: Window 111: Actuator 120: light-emitting part 121, 121-1, 121-2, 121-3, 121-4, 121-5, 121-6: light-emitting element 121a: luminous surface 122: Inclined surface 130, 130A, 130B: light receiving part 131, 131A, 131B: lens 131a: front end 132, 132B: Light receiving element 132a: Light-receiving surface 133, 133A, 133B: shell 140: control device 150, 150A, 150B: support part EL: luminous front end RL: Light-receiving front end HS: Frame N: Network BL2: Optical axis BL11: Optical axis BL21: Optical axis HW11: Half-value angle area HW2: Half-value angle area PL1: Parallel line RF21: reflection axis RL1: Central axis VF: Imaginary stool

[Fig. 1] Fig. 1 is a perspective view showing an example of the configuration of the toilet system of the first embodiment. [Fig. 2] Fig. 2 is a perspective view showing an example of the configuration of the toilet seat device of the first embodiment. [Fig. 3] Fig. 3 is a perspective view showing an example of the configuration of the toilet seat device of the first embodiment. [Fig. 4] Fig. 4 is a block diagram showing an example of the functional configuration of the toilet seat device of the first embodiment. [Fig. 5] Fig. 5 is a diagram showing an example of the opening and closing operation of the lid. [Fig. 6] Fig. 6 is a diagram showing an example of an optical unit having a window. [Fig. 7] Fig. 7 is a side view showing an example of the configuration of the toilet system of the second embodiment. [Fig. 8] Fig. 8 is a perspective view showing an example of the configuration of the toilet system of the second embodiment. [Fig. 9] Fig. 9 is a perspective view showing an example of the configuration of the toilet system of the third embodiment. [Fig. 10] Fig. 10 is a perspective view showing an example of the configuration of the toilet system of the third embodiment. [Fig. 11] Fig. 11 is a block diagram showing an example of the functional configuration of the toilet system of the third embodiment. [Fig. 12] Fig. 12 is a diagram showing an example of the configuration of a light-emitting unit and a light-receiving unit. [Fig. 13] Fig. 13 is a side view showing an example of the configuration of a light-emitting unit and a light-receiving unit. [Fig. 14] Fig. 14 is a diagram showing another example of the configuration of the light-emitting unit and the light-receiving unit. [Fig. 15] Fig. 15 is a side view showing another example of the configuration of the light-emitting unit and the light-receiving unit. [Fig. 16] Fig. 16 is a diagram showing an example of the configuration of a light-emitting unit and a light-receiving unit using a cylindrical lens. [Fig. 17] Fig. 17 is a side view showing an example of the configuration of a light-emitting unit and a light-receiving unit using a cylindrical lens. [Fig. 18] Fig. 18 is a block diagram showing an example of the functional configuration of the toilet system related to the processing of excretion information collection. [FIG. 19] FIG. 19 is a conceptual diagram showing the control flow of the process of collecting excretion information. [Fig. 20] Fig. 20 is a flowchart showing an example of the procedure of the processing in the standby mode. [Fig. 21] Fig. 21 is a diagram showing an example of a timing chart in the standby mode. [Fig. 22] Fig. 22 is a flowchart showing an example of the procedure of the processing in the measurement mode. [Fig. 23] Fig. 23 is a diagram showing an example of a timing chart in the measurement mode. [Fig. 24] Fig. 24 is a diagram showing an example of data in the process of collecting excretion information. [Fig. 25] Fig. 25 is a diagram showing an example of data analysis of the shape of excrement. [Fig. 26] Fig. 26 is a diagram showing an example of data analysis of the color of excrement. [Fig. 27] Fig. 27 is a diagram showing an example of the relationship between excrement and blood. [Fig. 28] Fig. 28 is a diagram showing an example of data analysis of the color of excrement. [Fig. 29] Fig. 29 is a diagram showing an example of data analysis of the color of excrement. [Fig. 30] Fig. 30 is a diagram showing an example of a virtual drop position of stool. [Fig. 31] Fig. 31 is a conceptual diagram showing a first arrangement form of the light-emitting section and the light-receiving section. [Fig. 32] Fig. 32 is a conceptual diagram showing a second arrangement form of the light-emitting section and the light-receiving section. [Fig. 33] Fig. 33 is a conceptual diagram showing a third arrangement form of the light-emitting section and the light-receiving section. [Fig. 34] Fig. 34 is a conceptual diagram showing a fourth arrangement form of the light-emitting section and the light-receiving section. [Fig. 35] Fig. 35 is a graph showing the relationship between the wavelength of light and the reflectance of each color of simulated stool. [Fig. 36] Fig. 36 is a perspective view of a special part showing an example in which light irradiation of a plurality of light-emitting elements overlaps. [Fig. 37] Fig. 37 is a diagram showing an example of a timing chart regarding light irradiation. [Fig. 38] Fig. 38 is a conceptual diagram showing the relationship between the arrangement of the light-emitting unit and the light-receiving unit.

100F: Optical unit

120: light-emitting part

121: light-emitting element

121a: luminous surface

130: light receiving part

131: lens

131a: front end

132: Light-receiving element

133: Shell

EL: luminous front end

RL: Light-receiving front end

HS: Frame

Claims (17)

A toilet seat device, which is mounted on the upper part of a toilet with a basin for receiving excrement; and is characterized by: having: The toilet seat is for the user to sit down; The light-emitting part is provided with one or more light-emitting elements that irradiate light to the front; The light-receiving part is provided with a light-receiving element that receives light; and The frame is configured with the aforementioned light-emitting part and the aforementioned light-receiving part; The one or more light-emitting elements are arranged side by side with the light-receiving part, or arranged in front of the light-receiving part in a side view or a plan view of the frame body. The toilet seat device according to claim 1, wherein: The aforementioned light-emitting part, It is provided with the aforementioned one or more light-emitting elements that irradiate the excrement of the aforementioned user to the front; The aforementioned light-receiving part, It receives the reflected light from the excrement to the light irradiated by the light-emitting part. The toilet seat device according to claim 1 or 2, wherein: At least one of the aforementioned light-emitting elements is irradiated with a wavelength of 450 nm or more. The toilet seat device according to claim 1 or 2, wherein: The aforementioned light-receiving part, It is equipped with a lens for condensing light to the front of the aforementioned light-receiving element; The aforementioned one or more light-emitting elements, In a side view or plan view of the frame body, it is arranged side by side with the lens or arranged in front of the lens. The toilet seat device according to claim 1 or 2, wherein: Around the one or more light-emitting elements, there is provided a reflecting means for making the light irradiated by the one or more light-emitting elements have a single directivity toward the front. The toilet seat device according to claim 1 or 2, wherein: A cover for suppressing the incidence of light from other than the front of the light receiving element is provided around the light receiving element. A toilet seat device, which is mounted on the upper part of a toilet with a basin for receiving excrement; and is characterized by: having: The toilet seat is for the user to sit down; The light-emitting part is provided with one or more light-emitting elements that irradiate light to the front; The light-receiving part is provided with a light-receiving element that receives light; and The frame is configured with the aforementioned light-emitting part and the aforementioned light-receiving part; A cover for suppressing the incidence of light from other than the front of the light receiving element is provided around the light receiving element. An excrement detection device, which is configured on a toilet formed with a basin for receiving excrement; and is characterized by: having: The light-emitting part is provided with one or more light-emitting elements that irradiate light to the front; The light-receiving part is provided with a light-receiving element that receives light; and The frame is configured with the aforementioned light-emitting part and the aforementioned light-receiving part; The one or more light-emitting elements are arranged side by side with the light-receiving part, or arranged in front of the light-receiving part in a side view or a plan view of the frame body. An excrement detection device, which is configured on a toilet formed with a basin for receiving excrement; and is characterized by: having: The light-emitting part is provided with one or more light-emitting elements that irradiate light to the front; The light-receiving part is provided with a light-receiving element that receives light; and The frame is configured with the aforementioned light-emitting part and the aforementioned light-receiving part; A cover for suppressing the incidence of light from other than the front of the light receiving element is provided around the light receiving element. A toilet seat device, which is mounted on the upper part of a toilet with a basin for receiving excrement; and is characterized by: having: The toilet seat is for the user to sit down; The light-emitting part radiates light forward; and The light receiving part is for receiving light; The light-emitting part is arranged such that the central axis of the light-emitting part is inclined in a direction approaching the central axis of the light-receiving part on the front side. The toilet seat device according to claim 10, wherein: The aforementioned light-emitting part, Light is irradiated to the front of the stool excreted by the aforementioned user; The aforementioned light-receiving part, It receives the reflected light from stool to the light irradiated by the light-emitting part. The toilet seat device according to claim 10 or claim 11, wherein: The aforementioned light-emitting part is provided with a plurality of light-emitting elements that irradiate light; A plurality of the aforementioned light-emitting elements, Able to irradiate light of different wavelengths; The half-value angle regions of the light irradiated by the plurality of the light-emitting elements are arranged so as to overlap in the opening of the toilet seat in a plan view of the toilet seat. The toilet seat device according to claim 12, wherein: The aforementioned plurality of aforementioned light-emitting elements, It is arranged in such a manner that the half-value angle regions of the light irradiated by the plurality of the light-emitting elements are overlapped with respect to the virtual drop position of the stool excreted by the user. The toilet seat device according to claim 12, wherein: The plurality of the light-emitting elements are arranged around the light-receiving part. A toilet seat device, which is mounted on the upper part of a toilet with a basin for receiving excrement; and is characterized by: having: The toilet seat is for the user to sit down; The light-emitting part irradiates light; and The light receiving part is for receiving light; In the light-emitting part, a plurality of light-emitting elements that emit light of the same wavelength are provided. An excrement detection device, which is configured on a toilet formed with a basin for receiving excrement; and is characterized by: having: The light-emitting part radiates light forward; and The light receiving part is for receiving light; The light-emitting part is arranged such that the central axis of the light-emitting part is inclined in a direction approaching the central axis of the light-receiving part on the front side. An excrement detection device, which is configured on a toilet formed with a basin for receiving excrement; and is characterized by: having: The light-emitting part irradiates light; and The light receiving part is for receiving light; In the light-emitting part, a plurality of light-emitting elements that emit light of the same wavelength are provided.

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