JP6041254B2 - Toilet seat device - Google Patents

Description

  The present invention relates to a toilet seat device installed on an upper part of a toilet, and particularly relates to a toilet seat device using a radio wave sensor.

  Conventionally, toilet seat devices that use an infrared sensor to detect a user entering a toilet room or to leave the toilet room and control the operation of the toilet seat device based on the detection signal have been widely used. . For example, when it is detected that the user has entered the toilet room, the toilet lid is automatically opened or the toilet seat heater is automatically heated. In addition, when it is detected that the user has left the toilet room, the toilet seat and the toilet lid are automatically closed, and washing water is automatically flowed into the toilet.

  However, in the case of this infrared sensor, there is a problem that it is only possible to determine whether or not there is a user in the detection area, and the operation of the toilet seat device cannot be controlled based on the detailed behavior of the user.

  For these reasons, in recent years, a toilet seat device using a radio wave sensor capable of detecting a fine behavior of a user has been proposed (for example, Patent Document 1 below).

JP 2001-140325 A JP 2003-284655 A

  In order to detect the behavior of the user in the toilet room evenly using the radio wave sensor, the radio wave transmission part of the radio wave sensor is placed near the center in the width direction of the toilet seat device, and it is approximately equal to the left and right of the toilet bowl and toilet seat device It is preferable to form a simple detection area.

  However, since the nozzle in which the water outlet which discharges water toward the user's human body part is formed is provided in the central part in the width direction of the toilet seat device, at least a part of the radio wave radiated from the radio wave transmission unit Will interfere with the nozzle. This nozzle is in the human body cleaning mode that discharges water toward the local body part, in the nozzle cleaning mode that cleans the outer surface of the nozzle before and after the human body cleaning, and in the discarded water mode that discharges water remaining in the nozzle after the main cleaning. In some cases, since the nozzle moves in the front-rear direction, the movement of the nozzle is erroneously detected as the movement of the user, causing a problem that the toilet seat device malfunctions based on an erroneous detection signal.

  In response to the above problem, in Patent Document 2, a radio wave transmission unit is disposed above the nozzle, and a metal member is used between the nozzle and the radio wave transmission unit so that radio waves radiated from the radio wave transmission unit do not interfere with the nozzle. A shielding arrangement is disclosed. However, the configuration of Patent Document 2 requires a space for arranging the radio wave transmission unit and the metal member above the nozzle, which causes a problem that the height of the main body of the toilet seat device becomes extremely large.

  For this reason, the radio wave transmitter is adjacent to the side of the nozzle in order to form a substantially equal detection area for the toilet and toilet seat device without increasing the height of the main body of the toilet seat device. In this case, at least a part of the emitted radio wave interferes with the nozzle.

  The present invention has been made in view of the above-described problems, and its purpose is to move the nozzle even when a radio wave sensor is arranged at a position where at least a part of the radiated radio wave interferes with the nozzle. An object of the present invention is to provide a toilet seat device that can prevent a user's movement from being erroneously detected and causing the toilet seat device to malfunction due to an erroneous detection signal.

  In order to solve the above-described problems, a toilet seat device according to the present invention includes a main body portion installed at a rear upper part of a toilet bowl, and a toilet seat device provided rotatably with respect to the main body portion. The nozzle provided in the widthwise central part in the main body part and movable in the front-rear direction formed with a water discharge port for discharging water toward the human body part of the user, and provided in the main body part, A radio wave sensor that emits radio waves to the front side, receives reflected waves from the detected object of the emitted radio waves, and acquires movement information of the detected object as a detection signal, and a control unit that controls the operation of the toilet seat device The radio wave sensor is disposed adjacent to the side of the nozzle so that at least a part of the radiated radio wave interferes with the nozzle, and the control unit includes a detection signal related to movement of the human body, Detection signal regarding movement of the nozzle Detection signal determination means for determining the detection signal, and when the nozzle is moving, the detection signal regarding the movement of the nozzle determined by the detection signal determination means is canceled and the detection signal determination means The detection signal relating to the movement of the human body determined by the above is not canceled.

According to the present invention, the radio wave sensor is disposed adjacent to the side of the nozzle provided in the center in the width direction of the main body of the toilet seat device. Thereby, a substantially equal detection area on the left and right can be formed for the toilet bowl and the toilet seat device without increasing the height of the main body of the toilet seat device.
In addition, since the detection signal discriminating means for discriminating the detection signal relating to the movement of the human body and the detection signal relating to the movement of the nozzle cancels the detection signal relating to the movement of the nozzle when the nozzle is moving, Even when the radio wave sensor is installed so that at least part of the radio wave emitted from the radio wave sensor interferes with the nozzle, it is possible to prevent the movement of the nozzle from being erroneously detected as the movement of the user. Since the detection signal related to the movement of the human body is not canceled when the nozzle is moving, the operation of the toilet seat device is controlled based on the detection signal related to the movement of the human body even while the nozzle is moving. can do.

  In the toilet seat device according to the present invention, it is also preferable that the control unit does not cancel the detection signal related to the movement of the nozzle by the detection signal determination unit when the movement of the nozzle is stopped.

  In this preferred embodiment, when the movement of the nozzle is stopped, the movement information of the human body close to the movement speed of the nozzle (for example, the slow movement of the human body) can be acquired. A wider range of detection is possible.

  In the toilet seat device according to the present invention, it is also preferable that the control unit terminates the nozzle operation mode in which the nozzle is operated when the detection signal regarding the movement of the human body is acquired while the nozzle is moving.

  In this preferable aspect, when the human body is detected, the nozzle operation mode is terminated, so that information relating to the movement of the human body can be quickly returned to a state where it can be detected more widely.

  According to the present invention, even when the radio wave transmission unit of the radio wave sensor is disposed at a position where at least a part of the radiated radio wave interferes with the nozzle, the movement of the nozzle is erroneously detected as the movement of the user. It is possible to provide a toilet seat device that can prevent the toilet seat device from malfunctioning based on an erroneous detection signal.

The perspective view of the toilet seat apparatus of this invention Top view schematic block diagram in the internal structure of the toilet seat apparatus of this invention Schematic configuration diagram of radio wave radiation pattern in side view of toilet seat device of the present invention Schematic configuration diagram of radio wave sensor and control unit mounted on toilet seat device of the present invention Operation flowchart in toilet seat device of the present invention FIG. 3 is a flowchart of human body detection during nozzle driving in the toilet seat device of the present invention. The photograph which shows the internal structure of the toilet seat apparatus of this invention

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a perspective view of the toilet seat device of the present invention.
As shown in FIG. 1, the toilet seat device 10 of the present invention is used by being placed on a toilet 14. The toilet seat device 10 includes a main body 12, a toilet seat 13, a toilet lid 11, and a remote controller 18 that remotely operates each function of the toilet seat device 10. The main body 12 has a nozzle 16 for supplying cleaning water 17 and holds the nozzle 16 so as to be able to advance and retreat. Moreover, the main-body part 12 hold | maintains the toilet seat 13 and the toilet lid 11 so that rotation is possible.

When using the toilet seat device 10, the user rotates the toilet lid 11 upward as shown in FIG. 1 to expose the toilet seat 13. The user sits on the toilet seat 13 and uses the toilet, and then operates the remote controller 18 to discharge the washing water 17 from the water outlet 15 formed in the nozzle 16 to wash the user's local area. After the local cleaning, the user operates the remote controller 18 to stop the supply of the cleaning water 17 from the spout 15, and then the user operates the remote controller 18 to flow the cleaning water 18 through the toilet bowl 14.

Next, the top view in the toilet seat apparatus 10 of this invention is shown in FIG. The nozzle 16 is disposed in the center of the toilet seat device 10, and the washing water 17 can be appropriately supplied to the local area while the user is seated. A water supply path 22 for supplying the cleaning water 17 to the nozzle 16 is provided inside the main body 12, and an electromagnetic valve 21 </ b> A for controlling start / stop of water supply from the upstream side of the water supply path 22, and an electromagnetic valve 21 </ b> A And a heater unit 21B for heating the cleaning water 17 supplied through the water to a temperature suitable for local cleaning.

Furthermore, in order to collect the odor inside the toilet bowl 14, air is blown outside through the deodorizing air duct 25B for releasing the air inside the toilet bowl 14 through the deodorizing material and the deodorizing air duct 25B. And a deodorizing blower fan 25A. Moreover, in order to dry a local part with a warm air after a user performs a local washing | cleaning, the drying air for ventilating to a user's local part from the outside via the heater 21B provided in the inside of the main-body part 12 A duct 24B and a drying fan 24A are provided.

Since the toilet seat device 10 includes a rotatable toilet seat 13 and a toilet lid 11, a toilet seat rotating portion and a toilet lid rotating portion for rotating the toilet seat 13 and the toilet lid 11 are provided. . In the toilet seat device 10 of the present invention, the toilet seat 13 and the toilet lid 11 are automatically opened and closed by a drive signal from the control unit 20, and the toilet seat rotating unit and the toilet lid rotating unit are provided with motors. Yes. In order to block noise (for example, electromagnetic noise) due to driving of the motor, the toilet seat rotating part and the toilet lid rotating part are covered with a metal casing.

In the present invention, a radio wave sensor 23 for detecting the movement of the human body by transmitting / receiving radio waves is provided for user detection. The radio wave sensor 23 is provided on one side of the nozzle 16. The nozzle 16 is disposed at the center of the toilet seat device 10 for washing the user's local area. By providing the radio wave sensor 23 on one side, the radio wave radiation range of the toilet seat device 10 with respect to the horizontal direction is evenly distributed to the left and right. It is possible to distribute. Further, it is desirable that the radio wave radiation area 29 of the radio wave sensor 23 is widened in the horizontal direction of the toilet seat device 10. In the toilet space where the toilet seat device 10 is installed, it is not uniquely determined in which direction the door serving as the entrance is installed. Therefore, in order to detect a user reliably in any toilet space, a user who approaches the toilet seat device 10 from various directions by forming a radio wave radiation area 29 in the horizontal direction. Can be reliably detected.

In addition, a water supply path 22 for supplying cleaning water 17 to the nozzle 16 is disposed on the other side of the nozzle 16. With such a configuration, even when the bent portion of the water supply channel 22 is activated when the nozzle 16 is driven, the radio wave radiated from the radio wave sensor 23 is radiated to the water supply channel 22 through the nozzle 16, so that the water supply channel Therefore, it is possible to suppress detection of the movement of the water supply 22 and to prevent erroneous detection of the movement of the water supply channel 22.

An arrangement of the control unit 20 will be described. The control unit 20 of the present invention is unitized so as to include the power supply unit of the toilet seat apparatus 10. The control unit 20 is disposed on the side where the water supply path 22 is disposed with respect to the nozzle 16. The power supply unit is highly likely to generate electromagnetic noise with current supply to the heater 21B and the electromagnetic valve 21A. If this electromagnetic noise is input to the radio wave sensor 23, there is a high possibility that it is erroneously detected as a detection signal for detecting the user. Therefore, by arranging the control unit 20 on the water supply channel 22 side with respect to the nozzle 16, that is, on the other side of the nozzle 16, electromagnetic noise generated in the power supply unit reaches the radio wave sensor 23 via the nozzle 16. It is possible to suppress the electromagnetic noise input to 23, and to maintain the detection accuracy of the user.

Next, the installation location of the deodorizing blower fan 25A and the drying blower fan 24A will be described. In the toilet seat apparatus 10 of the present invention, it is desirable to widen the horizontal radio wave radiation area 29 in order to detect a user in the installed toilet room. In addition, by radiating radio waves so as not to detect the movement of each mechanism inside the toilet seat device 10 in the wide detection area, it is possible to reliably detect the movement of the user in a wide detection range. For this purpose, it is necessary to dispose the rotational drive unit such as the deodorizing blower fan 25 </ b> A and the drying blower fan 24 </ b> A outside the detection area of the radio wave sensor 23. In addition, since the radio wave radiated from the radio wave sensor 23 is reflected by metal or the like, it is desirable that the periphery of the radio wave sensor 23 is made of a material having a low dielectric constant such as resin instead of a metal object.

Therefore, in the present invention, in order not to arrange a metal object in the detection region of the radio wave sensor 23, a drying air duct 24B made of resin or a deodorant is formed on one side of the nozzle 16, that is, on the side where the radio wave sensor 23 is arranged. The air duct 25 </ b> B is disposed so as not to obstruct the radio wave radiation area 29 of the radio wave sensor 23. In addition, the drying blower fan 24A and the deodorizing blower fan 25A, which are rotating bodies, are arranged below the radio wave sensor 23 so as not to overlap the radio wave radiation area 29 of the radio wave sensor 23, so that erroneous detection associated with the rotation of the fan is detected. The configuration is to suppress.

Furthermore, the installation place of the toilet seat rotating body 27 and the toilet lid rotating body 26 will be described. As described above, since the toilet seat rotating body 27 and the toilet lid rotating body 26 are covered with the metal casing, if the toilet seat rotating body 27 and the toilet lid rotating body 26 are installed in the radio wave radiation area 29 of the radio wave sensor 23, the detection range of the radio wave sensor 23 is affected. Therefore, in the present invention, the toilet seat rotating body 27 and the toilet lid rotating body 26 are disposed outside the radio wave radiation area 29 of the radio wave sensor 23. Further, by utilizing the fact that the toilet seat rotating body 27 and the toilet lid rotating body 26 are covered with a metal casing, the deodorizing blower fan 25A that may erroneously detect movement by the radio wave sensor 23, or a drying fan. Arranged above the blower fan 24A (in FIG. 2, the toilet seat rotating body 27 is arranged above the deodorizing blower fan 25A, so that the radio wave radiated from the radio wave sensor 23 is reflected by the metal casing. Thus, the movement of each fan is not detected, so that it is possible to suppress erroneous detection due to the movement of the surrounding rotating body without obstructing the radio wave radiation area 20 of the radio wave sensor 23.

Next, FIG. 3 shows a side view of the toilet seat device 10 of the present invention.
In FIG. 1, it is desirable that the radio wave radiation area 29 is wide with respect to the horizontal direction of the toilet seat apparatus 10, but the radio wave radiation area 29 does not interfere with the toilet seat 13 in the vertical direction, and the vertical direction It is desirable to form the radiation region so that it does not spread greatly upward. When the radio wave radiation area 29 on the lower side in the vertical direction interferes with the toilet seat 13, the radio wave is reflected by a metal such as a heater 21 </ b> B for heating the toilet seat 13 installed on the toilet seat 13. 23, there is a risk of erroneous detection in order to detect the movement of an object that is not desired to be detected, for example, the movement of lighting or a ventilation fan arranged in the toilet room or noise generated from the object. Further, if the radiation is performed so as to interfere with the toilet seat 13, there is a possibility that a false detection occurs in order to detect the movement of an object inside the toilet bowl 14, for example, the movement of the nozzle 16 of the toilet seat apparatus 10 or the movement of the washing water 17 inside the toilet bowl 14. There is. From the above, it is desirable not to interfere with the toilet seat 13 in the radio wave radiation area 29 on the lower side in the vertical direction.

In addition, if the upper side of the vertical radio wave radiation area 29 is widened, there is a risk of erroneous detection due to lighting or ventilation fans arranged on the ceiling or the like. Therefore, in forming the radio wave radiation area 29, it is desirable to set the maximum radio wave radiation direction 30 slightly above the horizontal direction. Thus, the radio wave can be propagated in a predetermined direction of the toilet space without the radio wave radiation area 29 interfering with the toilet seat 13 and without forming the radio wave radiation area 29 above. In addition, by setting the radio wave maximum radiation direction 30 slightly above the horizontal direction, radio waves transmitted in the radio wave maximum radiation direction will be reflected on the chest when the user is a child. In this case, radio waves are reflected from the thigh to the waist, so that it is possible to reliably receive the reflected wave from the user, and thus it is possible to reliably generate a detection signal accompanying the movement of the user. Become.

Next, FIG. 4 shows a schematic configuration diagram of the radio wave sensor 23 and the control unit 20 mounted on the toilet seat device 10 of the present invention.
The radio wave sensor 23 includes an oscillation circuit 44 that generates radio waves to be radiated into space, a radio wave transmission unit 40 that radiates the generated radio waves into the space as a transmission signal 41, and a transmission signal 41 transmitted from the radio wave transmission unit 40. A radio wave receiving unit 42 that receives the reception signal 43 reflected by the detected object, and a mixer circuit 45 that generates a detection signal according to the state of the detected object based on the transmission signal 41 and the received signal 43; It has the composition which has.

The radio wave radiation area 29 shown in the present embodiment can be changed according to the configuration of the radio wave transmission unit 40. The maximum radiation direction of radio waves can also be changed by the configuration of the radio wave transmission unit 40. In the present embodiment, a transmission / reception separate structure in which the radio wave transmission unit 40 and the radio wave reception unit 42 are separately formed is shown. However, the effect of the present embodiment is that the radio wave transmission unit 40 and the radio wave reception unit 42 It is possible to have the same effect even in a transmission / reception integrated structure in which the above are integrated.

In this embodiment, the mixer circuit 45 has a structure in which the transmission signal 41 and the reception signal 43 are directly input to the mixer circuit 45. For example, the transmission signal 41 is propagated to the mixer circuit 45 by spatial propagation. The mixer circuit 45 also has the effect of this embodiment.

The detection signal generated by the radio wave sensor 23 is input to the control unit 20. The control unit 20 includes a noise cut filter 46A for removing noise added to the detection signal. The detection signal generated by the radio wave sensor 23 includes noise generated in the toilet space, for example, periodic noise generated by a commercial power source supplied to the lighting. The detection accuracy of the user can be improved by passing the detection signal through the noise cut filter 46A in order to remove this noise and reliably extract only the state of the user as a ratio detection object.

The detection signal that has passed through the noise cut filter 46A is a filter having a different frequency to pass, such as the first filter 46B and the second filter 46C, so as to be separated into detection signals according to the movement of each detected object. That is, the movement of various detected objects mixed in the detection signal is separated through a filter that separates the moving speed of the detected object.

The noise cut filter 46A and the first and second filters 46C can be formed by, for example, filtering by signal processing using a microcomputer or the like, or configuring the filter as a circuit using an electric circuit or the like. . In particular, in order to finely classify the speed of movement of the detected object, it is possible to finely classify the frequency by filtering by signal processing. Further, when a filter is configured as a circuit, the filter can be configured easily and inexpensively. Regardless of the method used to configure the filter, it is possible to remove noise in the toilet room and sort out the movement of the detected object.

The detection signals separated by the first filter 46B and the second filter 46C are input to a determination unit 47 that determines what state the non-detected object is in. The determination unit 47 extracts a reference value for determining the state of the detected object from the storage unit 48, and determines the state of the detected object by comparing the reference value with each detection signal. When the determination unit 47 determines the state of the object to be detected, the operation instruction unit 49 instructs each mechanism of the toilet seat device 10 to operate the device based on the determination result.

  The reference value stored in the storage unit 48 used in the determination unit 47 may be changed according to a method of using a preset value or the environment of the toilet room where the toilet seat apparatus 10 is installed. Is possible. The movement of the user, which is the detected object, may not be able to be handled with a uniquely determined reference value because the speed and direction of movement vary depending on the size and shape of the toilet room. Therefore, by correcting the reference value by learning based on the detection signal in the environment where the toilet seat device 10 is installed, it is possible to generate a reference value suitable for the installed toilet room, and the detection accuracy of the user Can be improved.

  Here, the radio wave sensor 23 of the present embodiment uses radio waves such as microwaves and millimeter waves as radio waves to be transmitted as the transmission signal 41. Since microwaves and millimeter waves have the ability to transmit a material having a low relative dielectric constant such as resin, a device having an exterior made of resin such as the toilet seat device 10 does not reflect radio waves. Since it is possible to transmit a predetermined amount of radio waves in the direction, it is possible to reliably detect the movement of the user in the toilet room.

  In the present embodiment, the radio wave sensor 23 uses a Doppler sensor. The object to be detected detected by the toilet seat device 10 is a user, and in particular, it is possible to determine the state of the user by detecting an action such as the approach / separation of the user and the speed of the action. It is desirable to use a radio wave sensor 23 that generates a detection signal corresponding to the movement of a person such as a sensor. The radio wave sensor 23 includes a phase difference sensor that detects a rough distance from the radio wave sensor 23 to the detected object and a motion of the detected object by providing a phase difference to the detection signal and outputting a plurality of detection signals. The same effect can be obtained with the radio wave sensor 23 that can detect the movement of the detected object.

Next, the operation flow of the toilet seat apparatus 10 of the present invention is shown in FIG.
The toilet seat device 10 of the present invention detects whether or not a user who is an object to be detected has entered a toilet room where the toilet seat device 10 is installed. When it is detected by this sensing that the user has entered the toilet room, the opening operation of the toilet lid 11 of the toilet seat device 10 and the heater 21B for bringing the toilet seat disposed on the toilet seat 13 to a predetermined temperature are energized. Next, it is detected whether or not the user is seated on the toilet seat 13. When seating is detected by this sensing, the toilet seat device 10 enables the user to receive a signal from the remote controller 18 for operating the toilet seat device 10, or for deodorization to release the odor inside the toilet 14 to the outside. The driving of the blower fan 25 </ b> A is started and operation preparation for enabling the nozzle 16 of the toilet seat apparatus 10 is performed.

  When the operation preparation of the nozzle 16 is completed, the local cleaning of the human body and the blowing of warm air are performed by the remote control 18 and the operation unit installed in the toilet seat main body 12. Therefore, sensing for detecting the user's sitting is performed, and when the user's sitting is detected, nozzle cleaning for cleaning the outer layer of the nozzle 16, drainage for discharging the cleaning water 17 inside the nozzle 16, A deodorizing operation for removing the odor in the toilet room is started. Further, when it is detected that the user has moved away from the toilet seat device 10, the toilet seat 13 and the toilet lid 11 are closed, the energization of the heater 21 </ b> B of the toilet seat 13 is stopped, and the cleaning water 17 is supplied to the toilet 14. To do.

  Here, the toilet seat device 10 of the present invention includes a main body portion 12 installed at the upper rear portion of the toilet 14 and a toilet seat portion 13 provided so as to be rotatable with respect to the main body portion 12. The nozzle 16 is provided in the central portion in the width direction in the main body 12 and is movable in the front-rear direction in which a water discharge port 15 for discharging water toward a human body part of the user is formed. 12, a radio wave sensor 23 that radiates radio waves to the front side, receives reflected waves from the detected body of the radiated radio waves, and acquires movement information of the detected body as a detection signal, and the toilet seat device 10, the radio wave sensor 23 is disposed adjacent to the side of the nozzle 16 so that at least a part of the emitted radio wave interferes with the nozzle 16, The control unit 20 includes the nozzle 16 When you are moving is configured to prohibit to perform the operation of the toilet seat apparatus 10 on the basis of a detection signal from the radio wave sensor 23.

  The above contents will be described with reference to the operation flowchart of FIG. In the toilet seat device 10 of the present invention, the nozzle 16 is temporarily extended to discharge the cleaning water 17 so as not to leave the cleaning water 17 in the nozzle 16 of the toilet seat device 10 or to clean the outer periphery of the nozzle 16. Drain or wash as described above. Therefore, even when the radio wave sensor 23 is arranged so as not to erroneously detect the nozzle 16, there is a possibility that the nozzle 16 may be erroneously detected as a human body due to the extension operation of the nozzle 16 or the like. Therefore, the movement of the nozzle 16 is not erroneously detected as the movement of the human body in the operation flowchart as shown in FIG.

  First, the control unit 20 extracts a detection signal from the radio wave sensor 23. At this time, it is determined whether the nozzle 16 is driven. This is because the controller 20 controls the drive of the toilet seat device 10, so that the drive of the nozzle 16 of the toilet seat device 10 can be grasped. Here, when it is found that the nozzle 16 is driven, it is necessary to exclude the movement of the nozzle 16 and extract the movement of only the human body. Therefore, the movement of the human body and the nozzle 16 is separated using the first filter 46B and the second filter 46C shown in FIG. In the present invention, the movement of the human body is detected by the first filter 46B, and the movement of the nozzle is detected by the second filter 46C.

  Since the movement of the nozzle 16 of the toilet seat device is slower than the approaching / separating movement of the human body, the frequency of the detection signal generated depending on the operation of the nozzle 16 is low. Therefore, the movement of the nozzle 16 that is slower than the movement of the human body can be identified by using the second filter 46C as the filter through which the lower frequency band passes than the first filter 46B. Conversely, the first filter 46B sets a frequency band that is higher than the second filter 46C and that passes only the frequency band of the detection signal that accompanies the movement of the human body.

  As described above, since the movement of the nozzle 16 that is slower than the movement of the user can be separated by the second filter 46C, when the nozzle 16 is driven, the second filter The movement of the user is determined based on the detection signal obtained from the first filter 46B while ignoring the detection signal 46C. Thereby, since it becomes possible to suppress the erroneous detection of the human body by the detection signal generated by driving the nozzle 16, it is possible to improve the detection accuracy of the user in the toilet seat device 10.

  Further, when the nozzle 16 is not driven, the user is detected using detection signals obtained from the first filter 46B and the second filter 46C. Here, the user's movement can be determined by the detection signal from the first filter 46B. However, when the nozzle 16 is not driven, the movement lower than the normal movement of the user is also detected. Thus, the movement of the user can be determined in more detail. Therefore, when the nozzle 16 is not driven, control is performed based on detection signals output from the two filters. Thereby, it becomes possible to judge a user's movement in detail.

  As described above, there is a possibility that the radio wave sensor 23 may erroneously detect the movement of the nozzle 16 of the toilet seat apparatus 10, but the determination based on the signal of the second filter 46C provided in the control unit 20 is canceled only when the nozzle is driven. By doing so, it becomes possible to reliably detect the movement of the user while suppressing erroneous detection by the radio wave sensor 23 with respect to the movement of the nozzle 16. Accordingly, it is possible to provide a toilet seat device that can reliably detect the user without causing the toilet seat device 10 to malfunction due to the movement of the nozzle 16 based on the approach / distance of the user.

DESCRIPTION OF SYMBOLS 10 ... Toilet seat apparatus, 11 ... Toilet lid, 12 ... Body part, 13 ... Toilet seat, 14 ... Toilet bowl, 15 ... Spout, 16 ... Nozzle, 17 ... Washing water, 18 ... remote control, 20 ... control unit, 21A ... solenoid valve, 21B ... heater, 21C ... draining unit, 22 ... water supply channel, 23 ... radio wave sensor , 24A ... drying fan, 24B ... drying air duct, 25A ... deodorizing fan, 25B ... deodorizing air duct, 26 ... toilet lid rotating body, 27 ... Toilet seat rotating body, 28 ... Nozzle outer surface cleaning unit, 29 ... Radio wave radiation area, 30 ... Radio wave maximum radiation direction, 31 ... Radio wave radiation area (vertical upper side), 32 ... Radio wave Radiation area (vertically below), 40 ... radio wave transmission unit, 41 ... transmission signal, 42 ... radio wave reception , 43... Reception signal, 44... Oscillation circuit, 45... Mixer circuit, 46 A... Noise cut filter, 46 B... First filter, 46 C. ..Determining unit, 48... Storage unit, 49.

Claims (3)

A toilet seat device comprising a main body portion installed at an upper rear portion of a toilet and a toilet seat portion rotatably provided with respect to the main body portion,
A nozzle that is provided in the center in the width direction in the main body and is movable in the front-rear direction in which a water discharge port is formed to discharge water toward the human body part of the user.
A radio wave sensor provided in the main body, radiating a radio wave to the front side, receiving a reflected wave from the detected body of the radiated radio wave, and acquiring movement information of the detected body as a detection signal;
A control unit for controlling the operation of the toilet seat device,
The radio wave sensor is disposed adjacent to the side of the nozzle so that at least a part of the radiated radio wave interferes with the nozzle,
The controller is
It has a detection signal discriminating means for discriminating a detection signal relating to the movement of the human body and a detection signal relating to the movement of the nozzle,
When the nozzle is moving, the detection signal related to the movement of the nozzle determined by the detection signal determination means is canceled and the detection signal related to the movement of the human body determined by the detection signal determination means is not canceled. A toilet seat device. 2. The toilet seat device according to claim 1, wherein when the movement of the nozzle is stopped, the control unit does not cancel the detection signal related to the movement of the nozzle by the detection signal determination unit. The toilet seat device according to claim 2, wherein the control unit ends a nozzle operation mode for operating the nozzle when a detection signal related to movement of a human body is acquired while the nozzle is moving.