JP2023147279A - bathroom system - Google Patents

Abstract

To provide a bathroom system which offers enhanced reliability in determining the presence/absence of a person in a bathroom.SOLUTION: A bathroom system 100 is provided, comprising an entry/exit sensor 20 for detecting people passing through an entrance 2a of a bathroom 2 with a bathtub 3, a vital sensor 10 for detecting vitals of a person in the bathroom 2, and a control device 1 configured to determine the presence or absence of a person in the bathroom 2 on the basis of a first signal acquired from the entry/exit sensor 20 and a second signal acquired from the vital sensor 10.SELECTED DRAWING: Figure 1

Description

The present invention relates to bathroom systems.

In recent years, the number of accidents occurring in bathrooms has been increasing. Additionally, the proportion of elderly people is increasing. Therefore, it is predicted that the proportion of elderly people living alone or in elderly care will increase, and it is feared that the number of accidents occurring in bathrooms will further increase. A bathroom system that also monitors and monitors people in the bathroom has been proposed.

Patent Document 1 or Patent Document 2 proposes a system that uses a pyroelectric sensor to detect the presence or absence of a person in a bathroom.

JP2020-094748A JP2020-112850A

However, with the system of Patent Document 1 or Patent Document 2, false detection may occur due to the influence of the use of the bathroom or the installation environment, and the presence or absence of a person in the bathroom may not be correctly detected.
The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a bathroom system that can improve the reliability of determining the presence or absence of a person in the bathroom.

In order to solve the above problems, the present invention has the following aspects.
(1) A bathroom system according to one aspect of the present invention includes: an entrance/exit sensor for detecting the passage of a person at the entrance/exit of a bathroom having a bathtub; a vital sensor for detecting the vitals of the person in the bathroom; A control device that determines the presence or absence of a person in the bathroom based on a first signal obtained from the entry/exit sensor and a second signal obtained from the vital sensor.
(2) In (1) above, the control device determines whether or not a person has passed through the doorway based on the first signal, and the control device determines whether a person in the bathroom has passed based on the second signal. The control device stores the determination result of the presence or absence of a person in the bathroom, and the control device stores the absence of the person as the determination result. When it is determined that there is a person passing through the doorway and there is a vital sign in the bathroom, it is determined that there is a person in the bathroom, and the control device determines that there is a person in the bathroom as a result of the determination. In the state where the presence in the room is stored, if it is determined that there is a person passing through the doorway and there are no vital signs in the bathroom, it may be determined that there is no person in the bathroom.
(3) In (2) above, in a state where the presence of a person is stored as the determination result, if the control device determines that there is no person passing through the doorway, the control device determines the vital signs in the bathroom. Regardless of the presence or absence of the room, the determination of presence in the room may be maintained.
(4) In either (2) or (3) above, the control device determines that no person is passing through the entrance/exit in a state where the absence of a person is stored as the determination result. , the determination of absence may be maintained regardless of the presence or absence of vital signs in the bathroom.
(5) In any one of (1) to (4) above, the vital sensor may be provided in the bathroom at a position lower than a sill surface of the bathtub and away from the bathtub.
(6) In any one of (2) to (4) above, the control device includes a bathtub sensor for detecting entering/exiting the bathtub, and the control device is configured to operate based on a third signal obtained from the bathtub sensor. , determines whether a person enters or leaves the bathtub, and in a state where the presence of a person is stored as the determination result, if it is determined that a person has left the bathtub, the control device determines whether the person is in the washing area. It may be determined that there is.

According to the present invention, it is possible to provide a bathroom system that can increase the reliability of determining the presence or absence of a person in the bathroom.

FIG. 2 is an explanatory diagram (side view) of the bathroom system according to the embodiment. FIG. 1 is an explanatory diagram (top view) of a bathroom system according to an embodiment. FIG. 1 is a block diagram of a bathroom system according to an embodiment. It is a table showing the relationship between combinations of sensors required for presence/absence determination and determination details obtained from the detection results.

Hereinafter, a bathroom system 100 according to an embodiment of the present invention will be described based on the drawings.
FIG. 1 is an explanatory diagram (side view) of a bathroom system 100 according to an embodiment. FIG. 2 is an explanatory diagram (top view) of the bathroom system 100 according to the embodiment. FIG. 3 is a block diagram of the bathroom system 100 according to the embodiment.
Note that hereinafter, users of the bathroom system 100 may be subdivided and referred to as bathers, assistants, supervisors, and the like.

(bathroom system)
As shown in FIGS. 1 and 2, the bathroom system 100 according to the embodiment includes a bathroom 2 having an entrance 2a that allows a user to pass into and out of the bathroom, and a bathtub 3 having a frame surface 3a. There is. Bathroom system 100 may optionally include a washroom 4. The bathroom 2 may be connected to a dressing room through an entrance/exit 2a.
In this embodiment, the bathroom 2 has a rectangular parallelepiped shape. The bathroom 2 includes four sides 2b and 2c. The four side surfaces 2b include two first side surfaces 2b extending in the first direction D1 and two second side surfaces 2c extending in the second direction D2. The bathroom 2 is divided into a bathtub 3 and a washing area 4 when viewed from above. The bathtub 3 and the washing area 4 are lined up in the first direction D1. In the illustrated example, the entrance/exit 2a is provided on the second side 2c on the washing area 4 side among the two second side surfaces 2c. The entrance/exit 2a is disposed closer to one side (hereinafter also referred to as the first side) of the second side surface 2c than the center in the second direction D2. Note that the entrance/exit 2a may be provided on the first side surface 2b located on the first side in the second direction D2.
The bathroom 2 may be provided with a counter 2d. The counter 2d is provided on one of the two first side surfaces 2b located on the opposite side (hereinafter also referred to as the second side) from the first side along the second direction D2. In the illustrated example, the height of the counter 2d is lower than the height of the frame surface 3a. Counter 2d may not be provided.

Here, as shown in FIGS. 1 to 3, the bathroom system 100 includes an entry/exit sensor 20 for detecting the passage of a person through the entrance 2a of the bathroom 2 having the bathtub 3, and a room entry/exit sensor 20 for detecting the passage of a person through the entrance 2a of the bathroom 2 having a bathtub 3, and for detecting the vital signs of the person inside the bathroom 2. A control device 1 that determines the presence or absence of a person in the bathroom 2 based on a vital sensor 10 for detection, a first signal obtained from the entry/exit sensor 20, and a second signal obtained from the vital sensor 10. , is equipped with. In this way, the bathroom system 100 determines whether a person is present or absent in the bathroom 2 based on the detection results of a plurality of types of sensors that detect different objects. Therefore, compared to the case where determination is made based on detection results from a single type of sensor, the possibility that each sensor makes false detections at the same time can be reduced. Therefore, the reliability of determining the presence or absence of a person in the bathroom can be increased.

As shown in FIGS. 1 to 3, the bathroom system 100 includes a control device 1. As shown in FIGS.

The bathroom system 100 may include a vital sensor 10, an entry/exit sensor 20, and a bathtub sensor 30. The bathtub sensor 30 is a device for detecting entry into and exit from the bathtub 3. Since the bathroom system 100 includes the bathtub sensor 30 in addition to the vital sensor 10 and the entry/exit sensor 20, it is possible to further improve the reliability of determining whether or not there is a person in the bathroom 2. In addition, the bathroom system 100 includes a bathtub sensor 30 in addition to the vital sensor 10 and the entry/exit sensor 20, so whether the person in the bathroom 2 is in the bathtub 3 or in the washing area 4 can be detected. can be determined.

The bathroom system 100 may include a lamp 40, a speaker 50, a drain plug 80, and a heater 90.

The vital sensor 10, entrance/exit sensor 20, bathtub sensor 30, lamp 40, speaker 50, drain plug 80, and heater 90 (hereinafter, these may be referred to as devices) are each communicably connected to the control device 1. has been done. However, the lamp 40, speaker 50, drain plug 80, and heater 90 may be omitted.

(vital sensor)
The vital sensor 10 is an apparatus (device) for detecting the vitals of a person in the bathroom 2. Vitals include, for example, human breathing, human pulse, human body movement (hereinafter sometimes referred to as body movement), human body temperature, human pulse wave, and the like. The vital sensor 10 may detect at least one of breathing, pulse, body movement, body temperature, and pulse wave of a person in the bathroom 2. The vital sensor 10 may detect at least one of breathing, pulse, and body movement of a person in the bathroom 2. In this embodiment, the vital sensor 10 detects the breathing, pulse, and body movements of people in the bathroom 2.

The vital sensor 10 may be, for example, a non-contact Doppler sensor that utilizes the Doppler effect. For example, a Doppler sensor emits microwaves, receives the reflected waves of the emitted microwaves, and detects a person's breathing, pulse, body movements, etc. from the difference between the frequency of the emitted microwaves and the frequency of the received microwaves. Detect. However, the vital sensor 10 is not limited to such a microwave Doppler method. For example, the vital sensor 10 may be of a millimeter wave radar type or a UWB radar type. For the vital sensor 10, a known configuration capable of detecting the vitals of a person in the bathroom 2 can be appropriately adopted. For example, when the vital sensor 10 detects a person's body temperature, an infrared thermography camera may be used as the vital sensor 10.

The vital sensor 10 sends a second signal corresponding to the vitals of the person in the bathroom 2 to the control device 1. Note that the second signal may be a digital signal or an analog signal. When the vital sensor 10 is a Doppler sensor, the second signal may vary depending on the reflected wave. The control device 1 determines whether or not the person in the bathroom 2 has vital signs based on the second signal.

The vital sensor 10 is provided in the bathroom 2. The vital sensor 10 may be provided in the washing area 4, the bathtub 3, or the ceiling of the bathroom 2. A plurality of vital sensors 10 may be provided at different locations.

The vital sensor 10 is a Doppler sensor, and is preferably provided in the bathroom 2 at a position lower than the stile surface 3a of the bathtub 3 (downward in the vertical direction) and away from the bathtub 3. As a result, it becomes difficult for the vital sensor 10 to detect reflected waves caused by the shaking of the water surface in the bathtub 3 (the vital signs are confused with the shaking of the water surface, making it difficult to detect). The vital signs of bathers can also be detected more reliably. In the illustrated example, the vital sensor 10 is provided in the washing area 4. The vital sensor 10 is provided on the first side surface 2b. The vital sensor 10 is provided on the first side surface 2b located on the second side in the second direction D2, of the two first side surfaces 2b. The vital sensor 10 is located on the opposite side of the bathtub 3 with the counter 2d in between. The vital sensor 10 is lower than the counter 2d. However, the position of the vital sensor 10 is not limited. For example, the vital sensor 10 may be provided on the second side surface 2c. For example, the vital sensor 10 may be provided at the same height as the counter 2d, or the vital sensor 10 may be provided at a higher position than the counter 2d.

The vital sensor 10 is supplied with electricity from a power source as appropriate.

(Enter/exit sensor)
The entry/exit sensor 20 is a device for detecting the passage of a person through the entrance/exit 2a of the bathroom 2 (entering/exiting the bathroom 2).
The room entry/exit sensor 20 may be a so-called human sensor.
The entry/exit sensor 20 may be, for example, an infrared sensor that detects infrared rays being blocked at the entrance/exit 2a. If the infrared sensor is a photoelectric type, and there is nothing between the transmitting element and the receiving element, the receiving element receives the light emitted from the transmitting element, and the light emitted from the transmitting element is received by the receiving element. When there is an object in the area, the light reception is blocked.

When the entry/exit sensor 20 is an infrared sensor, the control device 1 determines whether or not a person has passed through the entrance 2a of the bathroom 2 (to the bathroom 2 entering/exiting the room). For example, if the infrared sensor is a photoelectric type, the detection state of the infrared sensor changes from receiving light to blocking → receiving light when a person passes by. For example, the control device 1 determines that a person is passing based on a change in the detection result.
The entry/exit sensor 20 sends a first signal to the control device 1 in response to passage of an object at the entrance/exit 2a. Note that the first signal may be a digital signal or an analog signal. When the entry/exit sensor 20 is a photoelectric infrared sensor, the first signal may be a signal indicating a change in the detection result described above. The control device 1 determines whether a person has passed through the entrance 2a of the bathroom 2 based on the first signal.
The entry/exit sensor 20 is supplied with electricity from a power source as appropriate.

(bathtub sensor)
The bathtub sensor 30 is a device for detecting entry into and exit from the bathtub 3 (entering or exiting the bathtub).
The bathtub sensor 30 may be, for example, a water level sensor that measures the level of water stored in the bathtub 3 based on water pressure. The bathtub sensor 30 is provided in the bathtub 3.
The bathtub sensor 30 sends a third signal to the control device 1 depending on whether the bathtub 3 is entered or exited. Note that the third signal may be a digital signal or an analog signal. If the bathtub sensor 30 is a water level sensor, the third signal may vary depending on the water level of the bathtub 3. The control device 1 determines whether to enter or leave the bathtub 3 based on the third signal.
Electricity is supplied to the bathtub sensor 30 from a power source as appropriate.

(Other devices)
In this embodiment, the lamp 40, the speaker 50, the drain plug 80, and the heater 90 are additional functions, and as described above, are not essential. Note that the lamp 40, the speaker 50, and the heater 90 are provided in the bathroom 2, for example. A drain plug 80 is provided in the bathtub 3. These lamps 40, speakers 50, drain plugs 80, and heaters 90 may be operated in conjunction with each other, for example, in the event of an abnormality.

(Control device)
As shown in FIGS. 1 to 3, the control device 1 is communicably connected to various devices such as a vital sensor 10.

The control device 1 includes a computer configured with a processor (CPU), storage, memory, etc. (not shown). The storage stores programs that describe algorithms (logic) described below, necessary data files, and the like. The processor executes programs using memory in response to requests from external devices such as sensors. The program is used to cause the computer to implement each function described below.

(Control method)
Hereinafter, a method for controlling the bathroom system 100 by the control device 1 will be explained along with an algorithm written in a program stored in the storage of the control device 1. The memory of the control device 1 stores in advance data used to execute the program, such as vital reference values, entry/exit reference values, and bathtub reference values.

(Determination of the presence or absence of a person's vitals)
The control device 1 determines whether or not the person in the bathroom 2 has vital signs based on the second signal. For example, when the vital sensor 10 is a Doppler sensor, the control device 1 may determine the presence or absence of a person's vitals as follows. That is, the control device 1 frequency-analyzes the second signal and obtains the intensity values of reflected waves (also referred to as vital detection values) in frequency bands corresponding to each of breathing, pulse, and body movement. The control device 1 stores reference values (threshold values) for each of breathing, pulse, and body movement as vital reference values. Each vital reference value may be, for example, the minimum values of breathing, pulse, and body movement that are detected when a person is alive. The control device 1 compares the detected vital values for each of breathing, pulse, and body movement with vital reference values, and determines whether the person's vitals are present or not. For example, if the vital detection values for breathing, pulse, and body movement each exceed the vital reference value, the control device 1 determines that there is breathing, pulse, and body movement, and determines that the vital detection value is below the vital reference value. In this case, it may be determined that there is no breathing, pulse, or body movement.

When the control device 1 determines that at least one of breathing, pulse, and body movement is present, the control device 1 may determine that the vital signs of the person in the bathroom 2 are present. When the control device 1 determines that at least two of breathing, pulse, and body movement are present, the control device 1 may determine that the vital signs of the person in the bathroom 2 are present. The control device 1 may determine that the vital signs of the person in the bathroom 2 are present when it determines that breathing, pulse, and body movement are all present. When the control device 1 does not determine that the person in the bathroom 2 does not have vital signs, it may determine that the person has vital signs.
When the control device 1 determines that at least one of breathing, pulse, and body movement is absent, the control device 1 may determine that the vital signs of the person in the bathroom 2 are absent. The control device 1 may determine that there are no vital signs of the person in the bathroom 2 when determining that there are no at least two of breathing, pulse, and body movement. The control device 1 may determine that there are no vital signs of the person in the bathroom 2 when it determines that there is no breathing, pulse, or body movement. When the control device 1 does not determine that the person in the bathroom 2 has vital signs, it may determine that there are no vital signs.
In this embodiment, when the control device 1 determines that the vital signs of the person in the bathroom 2 are present when it determines that all of breathing, pulse, and body movement are present, the control device 1 determines that the vital signs of the person in the bathroom 2 are present, and that there are no breathing, pulse, and body movements. When it is determined that there are no vital signs of the person in the bathroom 2. In this embodiment, the control device 1 performs the following actions when two of breathing, pulse, and body movement are present and one is absent, and when two of breathing, pulse, and body movement are absent and one is present, It is not determined that the vitals are present or absent; for example, it is determined that the vitals are unknown.

(Determination of whether or not a person is passing)
The control device 1 determines whether a person has passed through the entrance/exit 2a based on the first signal. For example, if the entry/exit sensor 20 is an infrared sensor, the control device 1 may determine whether a person is passing through as follows. That is, the value of the first signal (voltage value) when the infrared sensor is not cut off is the first value, and the value of the first signal (voltage value) when the infrared sensor is cut off is the second value. do. The first value and the second value are different, and the first value may be larger or smaller than the second value. The control device 1 determines that there is a person passing when the value of the first signal (entering/exiting detection value) changes from the first value to the second value and returns to the first value again. good. For example, the control device 1 stores in advance a value between the first value and the second value as the entry/exit reference value, and uses the value of the first signal (the entry/exit detection value) and the entry/exit detection value. It may be determined that there is a person passing by by comparing with the exit reference value. For example, when the control device 1 does not determine that there is a person passing, it may determine that there is no person passing.

(Determination of entrance/exit tank)
The control device 1 determines whether to enter or leave the bathtub 3 based on the third signal obtained from the bathtub sensor 30. For example, when the bathtub sensor 30 is a water level sensor, the control device 1 determines whether to enter or leave the bath as follows. That is, the control device 1 estimates the water level of the bathtub 3 from the third signal. The control device 1 stores the bathtub reference value. The bathtub reference value indicates the water level. The water level indicated by the bathtub reference value is lower than the water level when a person enters the bathtub, and higher than the water level when a person leaves the bathtub. The control device 1 compares the water level of the bathtub 3 estimated from the third signal with the water level indicated by the bathtub reference value, and determines whether a person enters or leaves the bath. That is, the control device 1 determines that the person is entering the bathtub when the estimated water level is equal to or higher than the water level indicated by the bathtub reference value, and determines that the person is leaving the bathtub when the estimated water level is less than the water level indicated by the bathtub reference value. You may judge. Further, when the bathtub sensor 30 detects a sudden change in the predetermined water level within a predetermined period of time, it may be determined whether the bathtub is entered or left. When the control device 1 determines that the vehicle is not entering the tank, it may determine that the vehicle is leaving the tank, and when determining that the vehicle is not leaving the tank, it may determine that the vehicle is entering the tank. .

(Existence/absence determination algorithm)
An algorithm for determining the presence or absence of a person in the bathroom 2 will be explained.
FIG. 4 is a table showing the relationship between sensor combinations required for presence/absence determination and determination details obtained from the detection results.
As shown in FIG. 4, the control device 1 performs presence/absence determination based on a combination of two or more sensors. The control device 1 determines whether there is a person in the bathroom 2 based on the detection results of the combined sensors. For example, presence/absence in the bathroom 2 is determined by using the vital sensor 10 (first sensor) as the main sensor and using the room entry/exit sensor 20 (second sensor) as the secondary sensor. Further, for example, entry into and exit from the bathtub 3 is determined by using the bathtub sensor 30 (third sensor) as the main sensor and using the vital sensor 10 (first sensor) as the secondary sensor. In this way, since the control device 1 determines the presence or absence of a person in the bathroom 2 from the detection results of different types of sensors, the determination is more reliable than when detection is performed using a single type of sensor. be able to.
Typical cases assumed as determination results will be explained below.

(initial state)
The control device 1 stores the determination result of whether a person is present or absent in the bathroom 2. Immediately after the control device 1 is activated (initial state), the control device 1 stores the absence of a person in the bathroom 2 as a determination result without making any entry or exit determinations, which will be described later.

(Case 1-1: Room entry judgment)
In a state in which the absence of a person is stored as a determination result, the control device 1 determines that a person is present in the bathroom 2 when it is determined that there is a person passing through the entrance/exit 2a and there is a vital sign in the bathroom 2. It is determined that the In this way, if the entry/exit sensor 20 detects entry/exit while a person in the bathroom 2 is absent, and the vital sensor 10 detects vital signs, the control device 1 determines whether a person has entered the bathroom 2 from outside the bathroom 2. It is estimated that there is a person in the bathroom 2.

Specifically, for example, if the control device 1 determines that there is a vital sign in the bathroom 2 after determining that there is a person passing through the entrance/exit 2a, the control device 1 determines that there is a person in the bathroom 2 (it is determined that there is a person in the bathroom 2). ). At this time, the control device 1 may use the presence or absence of vital signs at the same time as the person passing through the entrance/exit 2a for the determination, or may use the presence or absence of the vitals at a different time after a predetermined time has elapsed since the person passed through the doorway 2a for the determination. Good too. Furthermore, when determining the presence or absence of vital signs, the presence or absence of vital signs may be tentatively determined at each time, and the final determination may be made based on the tentative determination result. For example, if it is tentatively determined that vitals are present at one point in time, it may be determined that vitals are present, or it may be tentatively determined that vitals are present continuously at a certain consecutive time (i.e., for a certain period of time). It may be determined that the patient's vitals are present. Furthermore, it may be determined that there are vital signs in the bathroom 2 before it is determined that there is a person passing through the entrance/exit 2a. For example, if the vital sensor 10 detects the vitals of a person in the changing room, the control device 1 may detect the vital signs based on the second signal before and after determining that there is a person passing based on the first signal. It is conceivable to determine that vital signs are also present.

In this embodiment, in a state where the absence of a person is stored as a determination result, the control device 1 determines that there is a person passing through the entrance/exit 2a, and determines that there is a vital sign in the bathroom 2. However, it is not determined that there is a person in the bathroom 2.
A situation in which the control device 1 stores the absence of a person as a determination result and determines that there is only a person passing through the entrance/exit 2a is, for example, when a part of a person's body is undressed in a changing room. However, it is conceivable that the vehicle passes through the entrance/exit 2a (blocking the entrance/exit sensor 20).
For example, a situation in which the control device 1 determines that only the vital signs are present in the bathroom 2 with the absence of a person stored as a determination result is that the vital sensor 10 detects the vital signs of a person in the changing room. There are many possible reasons.

The control device 1 determines that there is a person in the bathroom (determines the presence or absence of a person in the bathroom 2) when detected by both different types of sensors, so it is more reliable than when detected by a single type of sensor. can make highly accurate judgments.

Note that when the control device 1 determines that a person is present in the bathroom 2, it stores the presence of a person as a determination result.
In addition, in a state where the presence of a person is stored as a determination result, when determining that no person has passed through the entrance/exit 2a, the control device 1 determines that a person is present regardless of the presence or absence of vital signs in the bathroom 2. (You may maintain the judgment of presence in the room.)
Thereby, even if the vital sensor 10 is no longer able to detect vital signs such as breathing, pulse, and body movement after determining whether the patient is in the room, the determination of whether the patient is in the room can be continued. As a result, even if, for example, the person becomes unwell while staying in the room and the vital activity of the person weakens, the control device 1 is prevented from erroneously detecting that the person in the bathroom is absent.

(Case 1-2: Absence determination)
When the control device 1 stores the presence of a person as a determination result, it determines that there is a person passing through the entrance/exit 2a, and when it determines that there are no vital signs in the bathroom 2, the control device 1 determines that there is no person in the bathroom 2. is determined to be absent. In this way, if the entry/exit sensor 20 detects entry/exit while a person is in the bathroom 2 and the vital sensor 10 does not detect vital signs, the control device 1 controls the exit from the bathroom 2 to the outside of the bathroom 2. Therefore, it is determined that no one is present in the bathroom 2 (absent).
Specifically, for example, if the control device 1 determines that there is no vital sign in the bathroom 2 after determining that there is a person passing through the entrance/exit 2a, the control device 1 determines that no person is present in the bathroom 2 (absence). It is determined that At this time, the control device 1 may use the presence or absence of vital signs at the same time as the person passing through the entrance/exit 2a for the determination, or may use the presence or absence of the vitals at a different time after a predetermined time has elapsed since the person passed through the doorway 2a for the determination. Good too. Furthermore, when determining the presence or absence of vital signs, the presence or absence of vital signs may be tentatively determined at each time, and the final determination may be made based on the tentative determination result. For example, if it is tentatively determined that there are no vitals at one point in time, it may be determined that there are no vitals, or it may be tentatively determined that there are no vitals at a certain consecutive time (that is, for a certain period of time). When the patient's vitals are detected, it may be determined that there are no vital signs. Furthermore, after determining that there is a person passing through the entrance/exit 2a, it may be determined that there is a vital sign in the bathroom 2. For example, if the vital sensor 10 detects the vitals of a person in the changing room, the control device 1 may detect the vital signs based on the second signal before and after determining that there is a person passing based on the first signal. It is conceivable to determine that vital signs are also present.

In the present embodiment, in a state where the control device 1 stores the presence of a person as a determination result, simply determining that there is a person passing through the entrance/exit 2a does not indicate that a person is present in the bathroom 2. Do not judge. Such a situation may include, for example, a user different from the user in the bathroom 2 entering the bathroom 2.
Further, in a state where the presence of a person is stored as a determination result, the control device 1 does not determine that a person is present in the bathroom 2 just by determining that there are no vital signs in the bathroom 2. Such a situation may be, for example, when a person becomes unwell while staying in the room and his/her life activities become weakened.

Since the control device 1 uses different types of sensors to determine whether a person is absent (determines whether there is a person in the bathroom 2), it can make more reliable determinations than when a single type of sensor is used. can do.

Note that when the control device 1 determines that no one is present in the bathroom 2, the control device 1 stores the absence of a person as a determination result.
In addition, in a state where the absence of a person is stored as a determination result, the control device 1 determines that there is no person passing through the entrance/exit 2a, regardless of the presence or absence of vital signs in the bathroom 2. Good (you can keep the absent judgment).
Thereby, even if the entry/exit sensor 20 reacts due to the passage of an object or the like that is not a person, it can be prevented from determining that a person has entered the room.

(Case 2: Tank entry/tank exit determination)
The control device 1 determines whether to enter or leave the bathtub 3 based on the third signal while storing the presence of a person as a determination result. In a state where the presence of a person is stored as a determination result, if it is determined that a person is in the bathtub 3, the control device 1 determines that there is a person in the bathtub 3, and removes the person from the bathtub 3. If it is determined that there is someone in the washing area 4, it is determined that there is a person in the washing area 4. In this manner, when the bathtub sensor 30 detects that a person is entering the bathtub while the person is in the bathtub, the control device 1 determines that there is a person in the bathtub 3 (entering the bathtub). If the bathtub sensor 30 does not detect entry into the bathtub while the bathtub sensor 30 is in the bathtub, the control device 1 determines that there is no one in the bathtub 3 (out) and that there is a person in the washing area 4.
In this way, the control device 1 can identify whether the user is on the washing area 4 side or on the bathtub 3 side based on the detection result of the bathtub sensor 30.

Note that the technical scope of the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention.

The bathroom system 100 according to the present embodiment includes an entrance/exit sensor 20 for detecting the passage of a person through the entrance/exit 2a of the bathroom 2, a vital sensor 10 for detecting the vitals of the person in the bathroom 2, and an entrance/exit sensor The control device 1 determines the presence or absence of a person in the bathroom 2 based on the first signal obtained from the vital sensor 20 and the second signal obtained from the vital sensor 10. In this way, the bathroom system 100 determines whether a person is present or absent in the bathroom 2 based on the detection results of a plurality of types of sensors that detect different objects. Therefore, compared to the case where determination is made based on the detection results of a single type of sensor, the possibility that each sensor makes a false detection at the same time can be reduced. Therefore, the reliability of determining the presence or absence of a person in the bathroom 2 can be increased.

100 Bathroom system 1 Control device 2 Bathroom 2a Entrance/exit 3 Bathtub 3a Frame surface 4 Washing area 10 Vital sensor 20 Entrance/exit sensor 30 Bathtub sensor 40 Lamp 50 Speaker 80 Drain plug 90 Heater 100 Bathroom system

Claims (6)

an entrance/exit sensor for detecting the passage of a person through an entrance/exit of a bathroom having a bathtub;
a vital sensor for detecting the vitals of the person in the bathroom;
A bathroom system comprising: a control device that determines the presence or absence of a person in the bathroom based on a first signal obtained from the entry/exit sensor and a second signal obtained from the vital sensor. The control device determines whether a person has passed through the doorway based on the first signal,
The control device determines whether the person in the bathroom has vital signs based on the second signal,
The control device stores a determination result of presence or absence of a person in the bathroom,
In a state where the absence of a person is stored as the determination result, the control device determines that a person is present in the bathroom when it is determined that there is a person passing through the doorway and there is a vital sign in the bathroom. It is determined that
In a state where the presence of a person is stored as the determination result, the control device determines that there is no person in the bathroom when it is determined that there is a person passing through the entrance and there is no vital sign in the bathroom. The bathroom system according to claim 1, wherein the bathroom system determines that. In the state in which the presence of a person in the room is stored as the determination result, the control device determines whether a person is present in the bathroom, regardless of the presence or absence of vital signs in the bathroom, if it is determined that there is no person passing through the doorway. The bathroom system according to claim 2, which maintains the determination. In the state where the absence of a person is stored as the determination result, the control device determines that no person is passing through the entrance/exit, regardless of the presence or absence of vital signs in the bathroom. 3. A bathroom system according to claim 2, which maintains. The bathroom system according to any one of claims 1 to 4, wherein the vital sensor is provided in the bathroom at a position lower than a sill surface of the bathtub and away from the bathtub. A bathtub sensor for detecting entering and exiting the bathtub,
The control device determines whether to enter or leave the bathtub based on a third signal obtained from the bathtub sensor,
Claims 2 to 4, wherein the control device determines that a person is present in the washing area if it is determined that the person has left the bathtub, in a state where the presence of a person is stored as the determination result. The bathroom system according to any one of the above.

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