JP2013163963A - Human body detection device for toilet and sanitary washing toilet seat device including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a human body detection device for toilet which further reduces energy consumption, and a sanitary washing toilet seat device including the same.SOLUTION: A human body detection device for toilet 300 is used in a sanitary washing toilet seat device 101 installed on a toilet bowl, and includes a human body detection unit 301 that detects a user using a toilet and outputs a human body detection signal, and a sensitivity control unit 320 that temporarily reduces the detection sensitivity of the human body detection unit on the basis of toilet use information indicating that the user is using a toilet.

Description

  The present invention relates to a toilet human body detection device and a sanitary washing toilet seat device including the same, and more particularly to a toilet human body detection device that detects a human body using a toilet and a sanitary washing toilet seat device including the same.

  Conventionally, a sanitary washing toilet seat device has become multifunctional so that a user can use a toilet bowl in a sanitary and comfortable manner.

  For example, in the toilet apparatus shown in Patent Document 1, when the human body detection unit detects a user in the vicinity of the toilet bowl, the human body detection unit transmits a human body detection signal to the warm water washing toilet seat unit. Thereby, a warm water washing toilet seat unit opens a toilet lid, or heats a toilet seat and washing water. When the user operates a remote controller, the human body detection unit stops transmitting the human body detection signal for a predetermined time.

JP 2006-283394 A

  By the way, in the conventional toilet apparatus, the consumption of energy for the human body detection unit to transmit the human body detection signal is reduced. However, while the transmission of the human body detection signal is stopped, the human body detection unit operates in the same manner as during the transmission of the human body detection signal. For this reason, there is room for further reduction in energy consumption.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a toilet human body detection device that further reduces energy consumption and a sanitary washing toilet seat device including the same.

  A human body detection device for toilets according to an aspect of the present invention is a human body detection device for toilets used in a sanitary washing toilet seat device installed on a toilet, and detects a user who uses a toilet and detects human bodies And a sensitivity control unit that controls to temporarily lower the detection sensitivity of the human body detection unit based on toilet use information indicating that the user is using a toilet. Prepare.

  The present invention produces an effect that it is possible to provide a toilet human body detection device further reducing energy consumption and a sanitary washing toilet seat device including the same.

It is a perspective view which shows typically the sanitary washing toilet seat apparatus which concerns on Embodiment 2 of this invention. It is a functional block diagram which shows the structure of the sanitary washing toilet seat apparatus of FIG. It is a top view which shows the remote control apparatus of the sanitary washing toilet seat apparatus of FIG. It is a flowchart which shows the operation | movement in the sanitary washing toilet seat apparatus of FIG. It is a timing chart which shows the operation | movement in the sanitary washing toilet seat apparatus of FIG. It is a timing chart which shows the operation | movement in the sanitary washing toilet seat apparatus of FIG. It is a circuit diagram which shows roughly the human body detection part in the sanitary washing toilet seat apparatus of FIG. 1, a human body detection sensitivity switching part, and a human body detection recognition part. FIG. 7 schematically shows the human body detection signal output from the human body detection sensor and the amplified detection signal amplified by the first amplifier circuit of the human body detection sensitivity switching unit when the detection sensitivity of the human body detection unit in FIG. 7 is set to low sensitivity. It is a graph to show. The human body detection signal output from the human body detection sensor and the amplified detection signal amplified by the first and second amplifier circuits of the human body detection sensitivity switching unit when the detection sensitivity of the human body detection unit in FIG. It is a graph shown roughly. It is a functional block diagram which shows the structure of the sanitary washing toilet seat apparatus which concerns on Embodiment 1 of this invention. FIG. 5 is a functional block diagram showing a configuration of a sanitary washing toilet seat device according to Embodiment 3 of the present invention. FIG. 10 is a functional block diagram showing a configuration of a sanitary washing toilet seat device according to Embodiment 4 of the present invention.

  The toilet human body detection device according to the first invention is a toilet human body detection device used in a sanitary washing toilet seat device installed on a toilet, and detects a user who uses the toilet and outputs a human body detection signal And a sensitivity control unit that controls to temporarily reduce the detection sensitivity of the human body detection unit based on toilet use information indicating that the user is using the toilet.

  According to this configuration, energy consumption corresponding to a decrease in detection sensitivity of the human body detection unit is reduced. In addition, since it is not necessary to detect the user who uses the toilet when the user is using the toilet, there is no problem due to a decrease in detection sensitivity of the human body detection unit. Furthermore, since the detection sensitivity that has temporarily decreased is restored, the user who uses the toilet next time can be detected quickly and reliably.

  A toilet human body detection device according to a second invention is the toilet human body detection device provided separately from the main body of the sanitary washing toilet seat device provided on the toilet in the first invention, The transmitter further includes a transmitter that transmits a signal to a receiver provided in the main body, and the transmitter is configured to transmit the human body detection signal whose detection sensitivity is controlled by the sensitivity controller to the receiver. It may be.

  According to this configuration, since the toilet human body detection device is provided separately from the main body, the toilet human body detection device can be arranged at a position where the user can be easily detected.

  In the toilet human body detection device according to a third aspect of the present invention, in the first or second aspect of the invention, the toilet use information is not controlled by the sensitivity control unit that the human body detection unit detects and outputs the user. It may be a human body detection signal.

  According to this configuration, when the human body detection unit detects the user, the detection sensitivity of the human body detection unit is temporarily reduced, assuming that the user is using the toilet. Thereby, energy consumption can be reduced and the user who uses the toilet next can be detected quickly and reliably.

  According to a fourth aspect of the present invention, there is provided a human body detection device for a toilet according to the first or second aspect, wherein the sanitary washing toilet seat device includes a seating detection unit that detects that the user is seated on a toilet seat disposed on the toilet. Further, the toilet use information may be a seating detection signal output by the seating detection unit detecting that the user is seated.

  According to this configuration, when the user is seated, the detection sensitivity of the human body detection unit is temporarily lowered, assuming that the user is using the toilet. Thereby, energy consumption can be reduced and the user who uses the toilet next can be detected quickly and reliably.

  In the first or second aspect of the human body detection device for toilets according to the fifth invention, the human body detection device for toilets or the sanitary washing toilet seat device operates the main body of the sanitary washing toilet seat device to stop the operation. An operation unit may be further provided, and the toilet use information may be an operation operation signal for operating the main body of the operation unit.

  According to this configuration, when the user operates the operation unit, the detection sensitivity of the human body detection unit is temporarily reduced, assuming that the user is using the toilet. Thereby, energy consumption can be reduced and the user who uses the toilet next can be detected quickly and reliably.

  The toilet human body detection device according to a sixth aspect of the present invention is the toilet apparatus according to the third aspect, wherein when the human body detection signal is received, the sensitivity control unit lowers the detection sensitivity of the human body detection unit, and the detection sensitivity of the human body detection unit When the elapsed time from the reduction of the time reaches a predetermined time, the detection sensitivity of the lowered human body detection unit may be increased.

  According to this configuration, when a predetermined time elapses after the detection sensitivity of the human body detection unit is lowered, the detection sensitivity of the lowered human body detection unit is increased. For this reason, the user who uses a toilet next can be detected quickly and reliably.

  The human body detection device for toilets according to a seventh aspect of the present invention is the fourth aspect of the invention, wherein the sensitivity control unit reduces the detection sensitivity of the human body detection unit when the seating detection unit outputs the seating detection signal, When the said seating detection part stops outputting the said seating detection signal, you may be comprised so that the detection sensitivity of the said human body detection part which is falling may be raised.

  According to this configuration, when the seated user leaves, the detection sensitivity of the lowered human body detection unit is increased. For this reason, the user who uses a toilet next can be detected quickly and reliably.

  The toilet human body detection device according to an eighth aspect of the present invention is that, in the fifth aspect, the sensitivity control unit reduces the detection sensitivity of the human body detection unit when the operation unit outputs the operation operation signal, and then When the operation unit outputs a stop operation signal for stopping the operation of the main body, the detection sensitivity of the lowered human body detection unit may be increased.

  According to this configuration, when the user operates the operation unit that stops the operation of the main body, the detection sensitivity of the lowered human body detection unit is increased even if the use of the main body is finished. For this reason, the user who uses a toilet next can be detected quickly and reliably.

  A toilet human body detection device according to a ninth aspect of the present invention is the toilet apparatus according to the fifth aspect, wherein the sensitivity control unit reduces the detection sensitivity of the human body detection unit when the operation unit outputs the operation operation signal, The controller may be configured to increase the detection sensitivity of the lowered human body detection unit when a predetermined time has elapsed without outputting a stop operation signal for stopping the operation of the main body.

  According to this configuration, even if the user leaves the toilet without operating the operation unit that stops the operation of the main body, the use of the main body ends when the predetermined time has elapsed, and the human body detection unit that is lowered Detection sensitivity is increased. For this reason, the user who uses a toilet next can be detected quickly and reliably.

  The human body detection device for a toilet according to a tenth aspect of the invention is any one of the first to ninth aspects, wherein the human body detection unit includes a pyroelectric infrared sensor and amplifies the human body detection signal of the infrared sensor. An amplification unit may be further provided, and the sensitivity of the human body detection unit may be lowered by stopping energization of the amplification unit.

  According to this configuration, since the pyroelectric infrared sensor does not emit infrared light, this power consumption is reduced. Furthermore, since the power supply to the amplifying unit is stopped while the sensitivity of the human body detecting unit is reduced, this power consumption is also reduced. This further reduces energy consumption.

  According to an eleventh aspect of the present invention, there is provided a toilet human body detection device according to any one of the first to ninth aspects, wherein the human body detection unit includes a reflective infrared sensor including a light emitting element and a light receiving element. The sensitivity of the human body detection unit may be reduced by reducing the number of issuances per unit time.

  According to this configuration, while the sensitivity of the human body detection unit is reduced, the number of times issued from the light emitting element of the infrared sensor is reduced, so that this power consumption is also reduced.

  A sanitary washing toilet seat device according to a twelfth invention comprises the toilet human body detection device according to any one of the first to eleventh inventions, and a main body installed on the toilet, wherein the main body includes the toilet seat, A toilet lid that covers a toilet seat; a cleaning device that cleans a local part of a user seated on the toilet seat; and a main body control unit that controls the operation of the main body, wherein the main body control unit is the toilet human body detection device The main body is enabled based on the reception of the human body detection signal from the human body detection unit, and the main body is unusable when no human body detection signal is received from the human body detection unit. It may be configured to.

  According to this structure, there exists an effect | action and effect similar to 1st-11th invention. Further, when the user stops using the toilet, the usable state of the main body ends. When the detection sensitivity that has temporarily decreased is restored and the user who uses the toilet next time is detected, the main body can be quickly used. For this reason, the user can use the toilet smoothly.

  According to a thirteenth aspect of the sanitary washing toilet seat device, in the twelfth aspect of the invention, the main body further includes a toilet lid rotating mechanism that opens and closes the toilet lid, and the main body control unit is configured to Based on the reception of the human body detection signal from the human body detection unit, the toilet lid rotation mechanism is controlled to open the toilet lid, the main body is made usable, and the human body detection signal from the human body detection unit is received. The toilet lid turning mechanism may be controlled so as to close the toilet lid based on the fact that it is no longer received, and the usable state of the main body is terminated.

  According to this configuration, when the user who uses the toilet is detected and the human body detection signal is received by the main body control unit, the toilet lid is opened, so that the user can use the toilet smoothly.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  In the following description, the same or corresponding elements are denoted by the same reference symbols throughout all the drawings, and redundant description thereof is omitted.

(Embodiment 1)
FIG. 9 is a functional block diagram showing the configuration of the sanitary washing toilet seat device 101 according to Embodiment 1. The sanitary washing toilet seat device 101 includes a toilet human body detection device 300 and a main body 200.

  The toilet human body detection device 300 is used in the sanitary washing toilet seat device 101 installed on the toilet 110 (see FIG. 1), and is a device for detecting a toilet user. The toilet human body detection device 300 includes a human body detection unit 301 and a sensitivity control unit 320. The human body detection unit 301 detects a user who uses the toilet and outputs a human body detection signal. Further, the sensitivity control unit 320 temporarily reduces the detection sensitivity of the human body detection unit 301 based on toilet use information indicating that the user is using the toilet.

  The main body 200 is installed on the toilet 110, and a toilet seat 220, a toilet lid 210 covering the toilet seat 220, a cleaning device 230 for cleaning a local part of a user seated on the toilet seat 220, and a main body control for controlling the operation of the main body 200. Unit 240. The main body control unit 240 makes the main body 200 usable based on the reception of the human body detection signal from the human body detection unit 301 of the toilet human body detection device 300. Further, the main body control unit 240 ends the usable state of the main body 200 based on the fact that the human body detection signal from the human body detection unit 301 is no longer received.

  According to the toilet human body detection device 300 according to the first embodiment, when the user is using the toilet, the detection sensitivity of the human body detection unit 301 is reduced. This decrease in detection sensitivity is caused by, for example, reducing the amplification degree of the amplification unit for amplifying the human body detection signal output from the human body detection unit 301, the number of times the signal is emitted from the human body detection unit 301, and the intensity of the signal. This is realized by reducing As a result, energy consumption of the amplification unit and human body detection unit 301 is reduced. Moreover, the number of times signals are transmitted from the toilet human body detection device 300 having these to the main body control unit more than necessary is reduced, and the energy consumption of the toilet human body detection device 300 is reduced. Moreover, since the detection sensitivity of the human body detection unit 301 that has temporarily decreased is returned to the original sensitivity, the user who uses the toilet next time can be detected quickly and reliably.

  In addition, when the user is not using the toilet, the human body detection unit 301 detects the user with high detection sensitivity, so that the user is reliably and quickly detected. When the main body control unit 240 receives this human body detection signal, the main body 200 is ready for use. Therefore, the user can use the toilet 110 quickly and easily. Further, when the user stops using the toilet, for example, when the main body control unit 240 stops using the human body detection signal from the human body detection unit 301, the usable state of the main body 200 ends.

(Embodiment 2)
[Configuration of sanitary washing toilet seat device]
The second embodiment shows an example in which the sanitary washing toilet seat device 101 of the first embodiment is applied to a sanitary washing toilet seat device 101 including a remote controller (hereinafter referred to as “remote controller”) 401 and the like.

  FIG. 1 is a perspective view schematically showing a sanitary washing toilet seat apparatus 101 according to the first embodiment. FIG. 2 is a functional block diagram showing the configuration of the sanitary washing toilet seat device 101. FIG. 3 is a plan view showing the remote controller 401 of the sanitary washing toilet seat device 101. In addition, as shown in FIG. 1, the main body 200 side is made into the back with respect to the toilet bowl 110, and the right side toward the front is demonstrated as a right side, and the left side toward the front is demonstrated as a left side.

  As shown in FIG. 1, the sanitary washing toilet seat device 101 is provided inside a toilet including a toilet 110. The sanitary washing toilet seat device 101 includes a remote controller 401 including a main body 200 and a toilet human body detection device 300.

  The main body 200 is provided on the toilet bowl 110. The main body 200 includes a toilet lid 210, a toilet seat 220, a toilet seat toilet lid rotation mechanism 215, a seating detection sensor 250, a main body operation unit 261, a main body reception unit 262, and a main body control unit 240. The main body 200 may incorporate a cleaning mechanism (cleaning device) 230, a drying device (not shown), and the like. The main body 200 includes a main body portion 201 and a sleeve portion 260, which are integrally formed.

  The toilet lid 210 and the toilet seat 220 are attached to the main body 201 through a toilet seat toilet lid rotating mechanism 215 so as to be opened and closed. In the state where the toilet lid 210 is opened, the toilet lid 210 stands so as to be positioned at the rearmost part of the main body 200. When the toilet lid 210 is closed, the toilet lid 210 hides the upper surface of the toilet seat 220. The toilet seat 220 incorporates a toilet seat heater 221, and the toilet seat heater 221 heats the seating surface of the toilet seat 220 to a comfortable temperature.

  The toilet seat toilet lid rotation mechanism 215 includes a toilet seat rotation mechanism that opens and closes the toilet seat 220 and a toilet lid rotation mechanism that opens and closes the toilet lid 210. The toilet seat toilet lid rotation mechanism 215 includes, for example, a DC motor and a plurality of reduction gears, and can open and close the toilet lid 210 and the toilet seat 220 individually or simultaneously.

  The cleaning mechanism 230 is a system for cleaning a local part of the human body, and includes a cleaning water supply mechanism (not shown), a heat exchanger (not shown), a cleaning nozzle (not shown), and the like. A washing water supply mechanism and a heat exchanger are connected to the washing nozzle. The cleaning water supply mechanism is a mechanism that supplies cleaning water from the water pipe to the cleaning nozzle, and includes a flow rate adjustment drive mechanism (not shown) that adjusts the amount of cleaning water supplied to the cleaning nozzle. The heat exchanger is a device that heats the washing water supplied to the washing nozzle. The cleaning nozzle is a device that ejects supplied and heated cleaning water into the toilet bowl 110, and is disposed at the lower center of the main body 200. The strength of the cleaning water ejected from the cleaning nozzle is changed by a flow rate adjusting drive mechanism (not shown). The cleaning nozzle has a butt cleaning nozzle part that cleans the butt and a bidet nozzle part that cleans the local part of the woman. The cleaning nozzle includes a nozzle driving mechanism, and the nozzle driving mechanism moves the cleaning nozzle between a storage position accommodated in the main body 200 and a cleaning position that protrudes from the main body 200 into the toilet bowl 110 and performs a cleaning operation. Let The drying device is a device for blowing out air and drying the washed parts.

  The seating detection sensor 250 is a second detection unit that detects that a human body is seated on the toilet seat 220. The seating detection sensor 250 is installed at the front corner portion of the main body 200. The seating detection sensor 250 is, for example, a reflective infrared sensor, and includes a light emitting element and a light receiving element. When the light emitting element emits infrared light, and the light receiving element receives the infrared light reflected by the user, the seating detection sensor 250 confirms that the user is present on the toilet seat 220 (is seated). Detect.

  The main body operation unit 261 is disposed on the upper surface of the sleeve portion 260 of the main body 200. The main body operation unit 261 is provided with a power switch 261a that is an important function of the main body 200 and an butt cleaning switch 261b that operates a butt cleaning function that is frequently used in the cleaning function.

  The main body receiver 262 is disposed on the upper surface of the sleeve 260. The main body receiving unit 262 is a receiving element that receives signals such as infrared rays transmitted from the remote controller 401.

  The main body control unit 240 controls each unit of the main body 200 so as to execute a function corresponding to signals input from the seating detection sensor 250, the main body reception unit 262, the main body operation unit 261, and the like.

  For example, the main body control unit 240 controls the toilet seat toilet lid rotation mechanism 215 to open the toilet lid 210 based on the reception of the human body detection signal from the human body detection unit 301 to make the main body 200 usable. . Further, the main body control unit 240 controls the toilet seat heater 221 so that the toilet seat heater 221 is energized. For the toilet seat heater 221, for example, a very high output heater of 800 W is used. As a result, the seating surface of the toilet seat 220 is heated to a set temperature of about 40 ° C. between the time when the user enters the toilet room and the time when the user sits on the toilet seat 220, for example, between 6 seconds and 15 seconds. After the toilet seat 220 reaches the set temperature, the main body controller 240 controls the power supplied to the toilet seat heater 221 to, for example, 50 W, so that the temperature of the seating surface is maintained at the set temperature.

  The main body control unit 240 controls the toilet seat toilet lid rotation mechanism 215 to close the toilet lid 210 based on the fact that it no longer receives the human body detection signal from the human body detection unit 301 and ends the usable state of the main body 200. To do. For example, when the elapsed time after the main body control unit 240 stops receiving the human body detection signal reaches a predetermined time, the toilet seat toilet lid rotation mechanism 215 is controlled to close the toilet lid 210. Furthermore, the main body control unit 240 controls the toilet seat heater 221 to stop energization of the toilet seat heater 221 or to keep the toilet seat 220 at a standby temperature of about 15 ° C. to 18 ° C., for example. Exit the ready state. As a result, the power when there is no user in the toilet room is greatly reduced.

  The remote control 401 is a remote control device configured separately from the main body 200. The remote controller 401 is attached to a wall surface of a toilet room where the human body detection sensor 310 can easily detect a user who uses the toilet and the user sitting on the toilet seat 220 can easily operate the operation switch 411 and the like. The remote controller 401 includes a human body detection unit 301 and a human body detection recognition unit (sensitivity control unit) 320. The remote control 401 may further include a remote control unit 501, an operation switch 411, a setting switch 420, a remote control display unit 430, a remote control signal transmission unit 439, and a battery 450. Each part of the remote controller 401 is driven by the power supplied from the battery.

  The operation switch 411 is an operation unit for operating each unit of the main body 200 and executing each function. As the operation switch 411, for example, as shown in FIG. 3, a butt washing switch 321, a bidet washing switch 332, a drying switch 323, a washing nozzle washing switch (not shown), and a stop switch 324 are arranged in the remote control 401. . The buttocks washing switch 321 is a switch that ejects washing water from the washing nozzle in order to wash the user's buttocks seated on the toilet seat 220. The stop switch 324 is a switch for stopping an operating function.

  The setting switch 420 is a setting unit for setting conditions of each function of the main body 200. As the setting switch 420, for example, a strong switch 325, a weak switch 326, a front switch 328, and a rear switch 329 are arranged in the remote controller 401. The strong switch 325 and the weak switch 326 are switches for adjusting the strength with which the cleaning water is ejected from the cleaning nozzle. The front switch 328 and the rear switch 329 are switches for adjusting the position at which the cleaning water is ejected from the cleaning nozzle.

  The remote control display unit 430 is a display unit on which information regarding each function of the main body 200 is displayed. For example, an intensity level indicator lamp 327 and a position indicator lamp 330 are arranged on the remote controller 401 as the remote controller display unit 430. The strength level indicator lamp 327 displays a level of strength at which cleaning water is ejected from the cleaning nozzle. The position indicator 330 displays the position of the cleaning nozzle that ejects cleaning water.

  The human body detection unit 301 is a part that detects a user of the toilet 110 and includes a human body detection sensor 310. The human body detection sensor 310 is composed of, for example, a passive sensor such as a pyroelectric infrared sensor that detects infrared rays received at predetermined time intervals. When the human body approaches, the amount of infrared rays detected by the human body detection sensor 310 increases, and a human body detection signal is generated. The human body detection unit 301 outputs a human body detection signal to the human body detection recognition unit 320.

  The human body detection recognizing unit 320 is a sensitivity control unit that temporarily reduces the detection sensitivity of the human body detection unit 301 based on toilet use information indicating that the user is using the toilet. The human body detection / recognition unit 320 includes a human body detection sensitivity switching unit 331 and adjusts the detection sensitivity of the human body detection unit 301. For example, when the operation switch 411 for operating the main body is operated, the human body detection recognizing unit 320 sets the human body detection sensitivity switching unit 331 so as to reduce the detection sensitivity of the human body detection unit, assuming that the user is using the toilet. Control. In addition, when the operation switch 411 for stopping the operation of the main body is operated, the human body detection recognition unit 320 controls the human body detection sensitivity switching unit 331 so as to increase the detection sensitivity of the lowered human body detection unit.

  The human body detection recognition unit 320 is a determination unit that determines the presence or absence of human body detection based on the input of the human body detection signal from the human body detection unit 301. When the human body detection recognizing unit 320 determines that there is human body detection and recognizes the human body, it outputs a human body detection signal to the remote control unit 501.

  The remote control control unit 501 controls each part of the remote control based on signals input from the operation switch, setting switch, and human body detection recognition unit. For example, when the user operates the operation switch 411, an operation signal is input from the operation switch 411 to the remote control unit 501. The remote control unit 501 outputs an operation signal to the remote control signal transmission unit and also outputs it to the human body detection recognition unit. Thereby, a function corresponding to the operation signal from the remote control signal transmission unit is executed in the main body, and the detection sensitivity of the human body detection unit is switched in the human body detection recognition unit 320.

  The remote control signal transmission unit 439 is a transmission unit that transmits a signal to a main body reception unit 262 provided in the main body 200 and is a communication interface with the main body 200. For example, the remote control signal transmission unit 439 is controlled by the remote control control unit 501 so that the human body detection unit 301 whose detection sensitivity is reduced transmits the human body detection signal output by detecting the user to the main body reception unit 262. The

[Switching detection sensitivity]
FIG. 7 is a circuit diagram schematically showing the human body detection unit 301, the human body detection sensitivity switching unit 331, and the human body detection recognition unit 320. 8A shows the human body detection signal output from the human body detection sensor and the amplified detection signal amplified by the first amplifier circuit of the human body detection sensitivity switching unit 331 in a state where the detection sensitivity of the human body detection unit 301 is set to low sensitivity. It is a graph shown roughly. FIG. 8B shows the human body detection signal output from the human body detection sensor in the state where the detection sensitivity of the human body detection unit 301 is set to high sensitivity, and the amplification amplified by the first and second amplification circuits of the human body detection sensitivity switching unit 331. It is a graph which shows a detection signal roughly.

  As shown in FIG. 7, the human body detection sensitivity switching unit 331 includes a plurality of amplifier circuits, which are two first and second amplifier circuits 338 and 333 in this embodiment. In the first amplifier circuit 338, the input terminal is connected to the human body detection unit 301 and the output terminal is connected to the second amplifier circuit 333. In addition, the power supply end of the first amplifier circuit 338 is connected to the first drive switch 334, and the first drive switch 334 is connected to a first terminal 335 that is connected to the battery 450. The opening and closing of the first drive switch 334 is controlled by a control signal output from the human body detection recognition unit 320. Further, the output terminal of the first amplifier circuit 338 is connected to the human body detection recognition unit 320. When the first drive switch 334 is closed and the second drive switch 336 is opened, the first amplified human body detection signal amplified by the first amplifier circuit 338 is input to the human body detection recognition unit 320.

  In the second amplifier circuit 333, an input terminal is connected to the first amplifier circuit 338 and an output terminal is connected to the human body detection recognition unit 320. The power supply terminal of the second amplifier circuit 333 is connected to the second drive switch 336, and the second drive switch 336 is connected to the second terminal 337 connected to the battery 450. The opening and closing of the second drive switch 336 is controlled by a control signal output from the human body detection recognition unit 320. When the first drive switch 334 and the second drive switch 336 are closed, the second amplified human body detection signal amplified by the first and second amplifier circuits 338 and 333 is input to the human body detection recognition unit 320.

  When the detection sensitivity of the human body detection sensor 310 is set to low sensitivity in the human body detection sensitivity switching unit 331, the human body detection recognition unit 320 sets each switch so as to close the first drive switch 334 and open the second drive switch 336. Control. As a result, the first amplifier circuit 338 is connected to the human body detection / recognition unit 320, but the second amplification circuit 333 is disconnected from the human body detection / recognition unit 320. Therefore, as shown in FIG. 8A, the human body detection signal of the human body detection sensor 310 is amplified only by the first amplifier circuit 338, and this first amplified human body detection signal is input to the human body detection recognition unit 320. Thereby, the detection sensitivity of the human body detection sensor 310 falls. Therefore, when the amplitude of the human body detection signal is small, the amplitude of the first amplified human body detection signal amplified by one first amplification circuit 322 is smaller than the threshold Th between the voltage value V1 and the voltage value V2. As a result, the human body detection recognizing unit 320 determines that there is no human body detection. However, when the amplitude of the human body detection signal is large, the amplitude of the first amplified human body detection signal may be larger than the threshold Th even if the human body detection signal is amplified only by the first amplifier circuit 338. In this case, the human body detection recognizing unit 320 determines that there is human body detection and recognizes the human body.

  When the detection sensitivity of the human body detection sensor 310 is set to high sensitivity in the human body detection sensitivity switching unit 331, the human body detection recognition unit 320 closes the first drive switch 334 and the second drive switch 336 so that each drive switch 334, 336 is controlled. As a result, the human body detection recognition unit 320 is connected in series with the first amplifier circuit 338 and the second amplifier circuit 333. For this reason, as shown in FIG. 8B, the human body detection signal of the human body detection sensor 310 is amplified by the first amplification circuit 338 and the second amplification circuit 333, and the second amplified human body detection signal is input to the human body detection recognition unit 320. The Thus, the human body detection signal is amplified by the first amplifier circuit 338 and then amplified by the second amplifier circuit 333. Thereby, the detection sensitivity of the human body detection sensor 310 increases. Therefore, if the second amplified human body detection signal is larger than the threshold Th, the human body detection recognition unit 320 determines that there is human body detection and recognizes the human body. However, when the amplitude of the original human body detection signal is small, even if the human body detection signal is amplified by two amplifier circuits, the amplitude of the second amplified human body detection signal is smaller than the threshold Th. In this case, the human body detection recognition unit 320 determines that there is no human body detection.

[Operation and action of toilet seat device]
FIG. 4 is a flowchart showing the operation of the sanitary washing toilet seat device 101. FIG. 5 is a timing chart showing the operation of the sanitary washing toilet seat device 101. The timing chart of FIG. 5 shows an example in which the buttocks cleaning switch 321 of the remote control 401 is operated. In FIG. 5, the first row from the top shows a state of butt washing according to the operation of the remote controller 401. The second row shows the human body detection signal of the human body detection sensor 310. The third level shows the detection sensitivity of the human body detection unit 301. The fourth row shows a signal transmitted from the remote control 401 to the main body 200. The fifth row shows the operation of the operation switch 411 of the remote controller 401. Further, the operations of the buttocks cleaning switch 321, the bidet cleaning switch 332, and the drying switch 323 of the remote controller 401 are respectively represented as a buttocks SW operation, a bidet SW operation, and a drying SW operation in FIGS.

  The outline in FIG. 5 is that at T1, when a human body is detected by the human body detection sensor 310 with the detection sensitivity of the human body detection unit 301 set to high sensitivity, a human body detection signal is generated. In T2, when it is determined that the human body is detected by the human body detection signal, the human body detection signal is transmitted from the remote controller 401. Thereafter, when the buttocks cleaning SW is operated at T3, a buttocks cleaning signal (operation operation signal) is transmitted from the remote controller 401 to the main body 200 at T4. At the same time, the detection sensitivity of the human body detection unit 301 is switched to low sensitivity. Although a human body detection signal may be generated at T5 in the buttocks cleaning state, the human body detection signal is not transmitted from the remote controller 401 unless the human body detection recognition unit 320 determines that there is human body detection. Thereafter, when the stop SW is operated at T6, a stop signal (stop operation signal for stopping the operation) is transmitted from the remote control 401 to the main body 200 at T7. At the same time, the detection sensitivity of the human body detection unit 301 is switched to high sensitivity.

  Specifically, as shown in FIG. 4, for example, when battery 450 is inserted into remote controller 401, remote controller control unit 501 sets the remote controller in a stopped state (step S1). Here, the remote control stopped state refers to a state other than the remote control operating state. In the remote control operation state, the operation of the function in the main body 200 is stopped after the operation switch 411 (the buttocks cleaning switch 321, the bidet cleaning switch 332, the drying switch 323, etc.) of the remote control 401 for operating the function of the main body 200 is operated. This shows a state until the operation switch 411 (stop switch 324) of the remote controller 401 is operated. For this reason, the remote control stop state is, for example, until the operation switch 411 (wet washing switch 321, bidet washing switch 332, drying switch 323, etc.) of the remote control 401 for operating the function of the main body 200 is operated, The state after the operation switch 411 (stop switch 324) of the remote controller 401 for stopping the operation of the function in 200 is operated is shown.

  The remote controller control unit 501 determines whether or not the remote controller is in a stopped state (step S2). Here, when the remote control is stopped (step S2: YES), the remote control control unit 501 controls the human body detection sensitivity switching unit 331 to set the detection sensitivity of the human body detection unit 301 to a high sensitivity (step S3). . In this state, when the user enters the toilet room, the human body detection unit 301 reacts to a change in the amount of infrared rays detected by the human body detection sensor 310 using infrared rays emitted from the user. Thereby, in T1 shown in FIG. 5, the human body detection part 301 outputs a human body detection signal to the human body detection recognition part 320 (step S4: YES).

  The human body detection input count is updated (step S5). In other words, if the input from the human body detection unit 301 continues for a specific time while counting the input from the human body detection unit 301 for a predetermined time, the human body detection recognition unit 320 determines that it is a human body detection signal. This prevents the human body detection signal input to the human body detection recognition unit 300 from being erroneously determined as a signal such as noise.

  In the human body detection recognition unit 320, the human body detection signal is amplified by the first amplification circuit 338 and the second amplification circuit 333. The human body detection recognition unit 320 determines whether or not the second amplified human body detection signal is larger than the threshold value Th. If the amplified human body detection signal is larger than the threshold Th, the human body detection recognizing unit 320 determines that there is human body detection, and human body detection is confirmed at T2 shown in FIG. 5 (step S6: YES). Thereby, the human body detection recognizing unit 320 outputs a human body detection signal to the remote control unit 501.

  The remote controller control unit 501 receives the human body detection signal from the human body detection recognition unit 320 and transmits the human body detection signal from the remote control signal transmission unit 439 at T2 shown in FIG. 5 (step S7). After the human body detection signal is transmitted, the input count from the human body detection unit 301 is cleared (step S8), whereby the next input from the human body detection unit 301 is determined from the beginning.

  The main body reception unit 262 of the main body 200 receives the human body detection signal from the remote control signal transmission unit 439 and outputs the human body detection signal to the main body control unit 240. The main body control unit 240 drives the toilet seat toilet lid rotation mechanism 215 to open the toilet lid 210. At the same time, the main body control unit 240 starts energizing the toilet seat heater 221 of the toilet seat 220 and raises the temperature within 15 seconds so that the seating surface of the toilet seat 220 is about 40 ° C. suitable for seating. Here, since the user sitting on the toilet seat 220 and the human body detection sensor 310 are separated, even if the human body detection sensor 310 detects infrared rays emitted from the user, the amount of infrared rays is very small. Therefore, the human body detection signal is not output from the human body detection unit 301 (steps S2: YES, S3, S4: NO), and the human body detection input count is cleared in preparation for the next input from the human body detection unit 301 (step S2). S9). Thus, when the user is seated on the toilet seat 220, the seating detection sensor 250 detects the seating and outputs a seating detection signal to the main body control unit 240. In response to the seating detection signal, the main body control unit 240 enables the operation switch 411 of the remote control 401 such as the buttocks cleaning switch 261b of the main body 200 and the cleaning function of the remote control 401 to be operated. When the operation switch 411 is operated at T3 shown in FIG. 5 (step S10: YES) and this operation switch 411 is the buttocks washing switch 261b (step S11: YES), the remote control unit 501 performs T4 shown in FIG. In FIG. 5, a buttocks signal (operation operation signal) is transmitted from the remote control signal transmitter 439 (step S12). Thereby, the main body control unit 240 receives the butt signal via the main body reception unit 262 and operates the cleaning mechanism 230 and the buttocks cleaning nozzle unit. Further, the remote controller control unit 501 sets the remote controller operation state (step S13).

  Thereby, the remote control unit 501 controls the human body detection sensitivity switching unit 331 at T4 in FIG. 5 to set the detection sensitivity of the human body detection unit 301 to low sensitivity (steps S2: NO, S21). Therefore, even if the human body detection sensor 310 detects a human body at T5 in FIG. 5 (step S22: YES), if the first amplified human body detection signal obtained by amplifying the human body detection signal is smaller than the threshold Th, the human body detection recognition is performed. The unit 320 determines that there is no human body detection (step S24: NO). Thereby, the human body detection signal is not transmitted from the remote control signal transmission unit 439. On the other hand, when the first amplified human body detection signal is larger than the threshold value Th in step S24, human body detection is confirmed (step S24: YES), and the human body detection signal is transmitted from the remote control signal transmission unit 439 (step S25). The input count is cleared (step S26).

  Further, when the user operates the stop switch 324 at T6 in FIG. 5 (step SS2: NO, S21, S22: NO, S27, S28: YES, S29: YES), the remote control unit 501 performs T7 shown in FIG. In step S30, a stop signal (stop operation signal) is transmitted from the remote control signal transmitter 439. Accordingly, the main body control unit 240 receives the stop signal via the main body receiving unit 262, stops the operation of the cleaning mechanism 230, and returns the buttocks cleaning nozzle unit to the original position. In addition, the remote control control unit 501 sets the remote control stopped state (step S31). Thereby, at T7 in FIG. 5, the remote controller control unit 501 controls the human body detection sensitivity switching unit 331 to set the detection sensitivity of the human body detection sensor 310 to high sensitivity (steps S2: YES, S3).

  When the user stands up from the toilet seat 220 and leaves the toilet room, the human body detection sensor 310 detects the human body. The human body detection signal is determined in the same manner as when the user enters the room, and the human body detection signal is output from the remote control signal transmission unit 439 to the main body control unit 240 via the main body reception unit 262. However, the main body control unit 240 counts an elapsed time from when a human body detection signal is received from the human body detection sensor 310 or when no seating detection signal is input from the seating detection sensor 250. When the elapsed time reaches a predetermined time, for example, 3 minutes in the present embodiment, when the main body control unit 240 receives a human body detection signal, a seating detection signal, etc., the elapsed time is cleared and then restarted. Is done. Therefore, the main body control unit 240 does not drive the toilet seat toilet lid rotation mechanism 215 unless the elapsed time reaches 3 minutes.

  When the elapsed time from entering the room exceeds a predetermined time, the main body control unit 240 drives the toilet seat toilet lid rotation mechanism 215 so that the toilet lid 210 is closed, and stops energization of the toilet seat heater 221. Thereafter, control is performed so as to maintain the standby temperature when the temperature falls to the standby temperature.

  If the operation switch 411 operated in step S10 is the bidet washing switch 332 (step S11: NO, S14: YES), the remote control unit 501 sends a bidet signal (operation operation signal) from the remote control signal transmission unit 439. At the same time as transmitting (step S15), the remote control operation state is set (step S16). As a result, the main body control unit 240 receives the bidet signal via the main body receiving unit 262 and operates the cleaning mechanism 230 and the bidet nozzle unit.

  If the operation switch 411 operated in step S10 is the drying switch 323 (step S14: NO, S17: YES), the remote control unit 501 transmits a drying signal (operation operation signal) from the remote control signal transmission unit 439. At the same time (step S18), the remote control operation state is set in the memory (step S19). Thus, the main body control unit 240 receives the drying signal via the main body receiving unit 262 and operates the drying device.

  Further, if the operation switch 411 in step S10 is another operation switch 411 (step S17: NO, S20), the process returns to step S2.

  In addition, when the operation switch 411 operated in step S28 is operated by another operation switch 411, here, the buttocks switch, bidet switch or drying switch 323 (step S29: NO, S32), the remote controller control unit 501 The remote control operation state is set (step S33), and the process returns to step S2. Thereby, while the operation switches 411 other than the stop switch are continuously operated, the detection sensitivity of the human body detection unit 301 is maintained at low sensitivity. When the remote controller control unit 501 transmits a signal corresponding to the operated operation switch 411 from the remote control signal transmission unit 439, the main body control unit 240 executes an operation corresponding to this signal.

  When the male user raises the toilet lid 210 and the toilet seat 220 and uses the toilet 110, the human body detection unit 301 detects the user who has entered the toilet room (steps S1 to S4: YES). When the human body detection recognizing unit 320 recognizes that there is human body detection based on the human body detection signal (steps S5 to S8), the main body control unit 240 drives the toilet seat toilet lid rotation mechanism 215 to open the toilet lid 210 and the toilet seat. The heater 221 is energized. Then, when the user performs an “open” operation of a toilet seat 220 switch (not shown) of the remote controller 401 (S2 to S4: NO, S9 to S20), the main body control unit 240 thereby causes the toilet seat toilet lid rotation mechanism. 215 is driven to release the toilet seat 220. In addition, the main body control unit 240 stops energization of the toilet seat heater 221 and controls the toilet seat heater 221 so as to maintain the standby temperature when the toilet seat heater 221 falls to the standby temperature.

  Then, the user leaves the toilet room, and the human body detection unit 301 detects the user (steps S1 to S4: YES). Based on this human body detection signal, the human body detection recognizing unit 320 recognizes that there is human body detection (steps S5 to S8), and the human body detection signal is input to the main body control unit 240. After a predetermined time has passed since the input of the human body detection signal (after 3 minutes in the present embodiment), the main body control unit 240 drives the toilet seat toilet lid rotation mechanism 215 to close the toilet lid 210 and the toilet seat 220.

[Action, effect]
According to the sanitary washing toilet seat device 101 having the above-described configuration, the human body detection unit 301 is operated until the stop switch 324 is operated after the operation switch 411 of the remote control 401 is operated, that is, while the user operates the remote control 401. The detection sensitivity is set to low sensitivity. For this reason, in the human body detection sensitivity switching unit 331, power is not supplied to one of the two amplifier circuits 338 and 333. Thereby, the power consumption of the human body detection sensitivity switching unit 331 and, in turn, the sanitary washing toilet seat device 101 is suppressed.

  Furthermore, when the detection sensitivity of the human body detection unit 301 is set to low sensitivity, the human body detection recognition unit 320 is less likely to determine that there is human body detection. Along with this, the frequency at which the human body detection signal is transmitted from the remote control signal transmission unit 439 is also reduced, so that the power for emitting light from the remote control signal transmission unit 439 is reduced and the power consumption is further reduced.

  In addition, when an operation switch 411 used by a user sitting on the toilet seat 220 such as a butt washing switch 321, a bidet washing switch 332, and a drying switch 323 is operated, the detection of the human body detection unit 301 of the human body detection recognition unit 320 is performed. Sensitivity decreases. For this reason, even if the detection sensitivity of the human body detection unit 301 is lowered, there is no problem.

  Furthermore, the human body detection signal is transmitted from the remote control signal transmission unit 439 to the main body reception unit 262 only when the human body detection recognition unit 320 determines that there is human body detection. Therefore, when the human body detection recognizing unit 320 determines that there is no human body detection, the “remote human body detection signal” signal is not transmitted from the remote control signal transmission unit 439 to the main body reception unit 262. For this reason, the power consumption for transmitting a signal is reduced.

  Further, when the operation switch 411 is operated, the human body detection sensitivity switching unit 331 switches the detection sensitivity of the human body detection unit 301 to low sensitivity. As a result, the frequency at which the human body detection signal is transmitted from the remote control signal transmission unit 439 to the main body reception unit 262 decreases, but the transmission of the human body detection signal is not prohibited. The presence of the user of the remote control 401 is accurately detected and transmitted, so that it is erroneously recognized that the user is absent despite the presence of the user in the toilet, and the trouble that the toilet lid 210 automatically stops is reduced. .

  When the stop switch 324 is operated after the operation switch 411 is operated, the detection sensitivity of the human body detection unit 301 returns from low sensitivity to high sensitivity. For this reason, the user who next enters the toilet can be detected quickly. Based on this detection, the toilet lid 210 is quickly opened, so that it is easy to use and can be automatically opened and closed without stress. Further, since the toilet seat 220 is heated rapidly or the washing water is heated rapidly, it is not necessary to keep the toilet seat 220 and the washing water in a heated state, and the power consumption in the standby state can be reduced.

  Furthermore, a human body detection unit 301 and a human body detection recognition unit 320 are formed integrally with a remote controller 401 that operates the main body 200. Thereby, the appearance is clear and the sanitary washing toilet seat device 101 is excellent in design. In addition, the human body detection unit 301 and the remote controller 401 can share the battery 450 power source 450, the remote control signal transmission unit 439, and the like, so that the cost can be reduced. In addition, when the remote controller 401 is operated, feedback to the human body detection sensitivity switching unit 331 can be executed reliably and easily.

  In addition, the pyroelectric infrared sensor consumes less power than a so-called active sensor such as an ultrasonic sensor that detects the human body by transmitting an ultrasonic wave and receiving the reflected ultrasonic wave. By configuring the human body detection sensor 310 with such a pyroelectric infrared sensor, the battery 450 as a drive power source can be made to last for a long time.

  Further, the sanitary washing toilet seat device 101 is separated from the main body 200 and is provided with a human body detection unit 301 and a human body detection recognition unit 320. For this reason, the human body detection part 301 can be arrange | positioned in the position which can detect a user more rapidly and reliably, and automatic operations, such as automatic opening and closing of the toilet lid 210, can be performed rapidly.

(Embodiment 3)
In the sanitary washing toilet seat apparatus 101 according to Embodiment 2, a remote control signal transmission unit 439 that only transmits signals and a main body reception unit 262 that only receives signals are provided. In contrast, in sanitary washing toilet seat apparatus 101 according to Embodiment 3, remote control transmission / reception unit 1439 is provided instead of remote control signal transmission unit 439, and main body transmission / reception unit 1262 is provided instead of main body reception unit 262.

  FIG. 10 is a functional block diagram showing the configuration of the sanitary washing toilet seat device 101 according to the third embodiment.

  Remote control transmission / reception unit 1439 includes a transmission unit that transmits signals to main body transmission / reception unit 1262 and a reception unit that receives signals from main body transmission / reception unit 1262. Main body transmission / reception unit 1262 includes a transmission unit that transmits signals to remote control transmission / reception unit 1439 and a reception unit that receives signals from remote control transmission / reception unit 1439. As a result, the remote controller 401 and the main body 200 can perform bidirectional communication.

  In the sanitary washing toilet seat device 101, when the seating detection sensor 250 detects that the user is seated on the toilet seat 220, the main body control unit 240 transmits a seating detection signal from the main body transmission / reception unit 1262. When the remote control signal transmission / reception unit 1439 receives the seating detection signal, the remote control control unit 501 outputs the seating detection signal to the human body detection recognition unit 320, assuming that the user is using the toilet. The human body detection recognizing unit 320 controls the human body detection sensitivity switching unit 331 so as to temporarily reduce the detection sensitivity of the human body detection unit 301 based on the toilet use information. Thereby, in the human body detection sensitivity switching part 331, the 1st drive switch 334 shown in FIG. 9 is closed, and the 2nd drive switch 336 is opened.

  When the user leaves the toilet seat 220, the seating sensor does not detect the seated user, and the main body control unit 240 does not transmit a seating detection signal to the main body transmission / reception unit 1262. As a result, the remote controller control unit 501 controls the human body detection sensitivity switching unit 331 so as to return the lowered detection sensitivity to the original high sensitivity even if the seated user has left. As a result, in the human body detection sensitivity switching unit 331, the first drive switch 334 and the second drive switch 336 shown in FIG. 9 are closed.

  In the sanitary washing toilet seat apparatus 101 according to the third embodiment, when the user's seating is detected, the detection sensitivity is reduced, thereby reducing the power consumption of the human body detection sensitivity switching unit 331 and the remote control signal transmission / reception unit 1439. Is done. Further, when it is clear that such a seated user is present in the toilet room, the detection sensitivity is set low, so that a problem of failing to detect the user is reduced. Further, when the user's withdrawal is detected, the detection sensitivity is increased, so that the presence of the user can be accurately detected. Thereby, the toilet seat 220 can be opened quickly, or the toilet seat 220 and the washing water can be heated rapidly.

(Embodiment 4)
In sanitary washing toilet seat apparatus 101 according to Embodiments 2 and 3, main body 200 and remote controller 401 are provided separately. On the other hand, the sanitary washing toilet seat apparatus 101 according to the third embodiment is provided with the main body 200 and the remote controller 401 integrally.

  FIG. 11 is a functional block diagram showing the configuration of the sanitary washing toilet seat device 101 according to the fourth embodiment.

  A control unit 1240 in which the remote control unit 501 and the main body control unit 240 are combined is provided. Therefore, a remote control signal transmission unit 439 (in the third embodiment, a remote control signal transmission / reception unit 1439) and a main body reception unit 262 (implementation) for transmitting and receiving signals between the remote control control unit 501 and the main body control unit 240. In the third embodiment, the main body transmission / reception unit 1262) is not provided. Further, the battery 450 for driving the remote controller 401 is not provided.

  In such a sanitary washing toilet seat apparatus 101, the number of parts is reduced, so that the cost can be reduced. Further, since the human body detection signal is reliably and promptly output from the human body detection recognition unit 320 to the control unit, the toilet seat 220 can be opened quickly, and the toilet seat 220 and the washing water can be rapidly heated.

  In this case, it is determined that the user is using the toilet by operating the operation switch 411 and / or detecting the seating of the user by the seating detection sensor 250. Based on this use information, the human body detection recognizing unit 320 temporarily reduces the detection sensitivity of the human body detection unit 301.

  Further, the human body detection recognizing unit 320 shows that the detection sensitivity of the human body detection unit 301 is lowered by the operation of the stop switch 324 and / or by the seating detection sensor 250 detecting the user's withdrawal. Return even if you raise it.

[Modification 1]
In the second embodiment, the human body detection recognizing unit 320 determines the presence or absence of a human body based on the amplification of the human body detection signal. However, the present invention is not limited to this. For example, the human body detection recognition unit 320 may determine the presence or absence of a human body based on the time, frequency, and voltage of the human body detection signal output from the human body detection sensor 310.

  Specifically, FIG. 6 is a timing chart showing an operation in the sanitary washing toilet seat device 101. The timing chart of FIG. 6 is substantially the same as the timing chart of FIG. However, the timing chart of FIG. 6 shows an example in which the human body detection sensor 310 easily detects a human body. Specifically, there are cases where a toilet room and a dressing room are combined. In this case, a user's operation | movement is large or the change of a user's bare skin exposed area becomes large. For this reason, a change in the amount of infrared rays detected by the human body detection sensor 310 including a pyroelectric infrared sensor becomes large, and the human body detection sensor 310 can easily detect the human body.

  When the human body detection sensor 310 is easy to detect, in FIG. 6, the output time of the human body detection signal input from the human body detection sensor 310 is longer at T5 during butt washing. Depending on the design of the control circuit, the number of output of the human body detection signal may increase, or the output voltage of the human body detection signal may increase.

  Thus, even if the detection sensitivity is set to low sensitivity, the human body operating the operation switch 411 is detected, and the human body detection signal is erroneously transmitted at T6 in FIG. Therefore, based on the signal input method from the human body detection sensor 310 according to the design of the control circuit, for example, “output time”, “number of outputs”, “output voltage”, etc., the human body detection recognizing unit 320 determines whether or not a human body is present judge. In accordance with this, the human body detection sensitivity switching unit 331 can change the detection sensitivity switching method.

  As a result, as shown in the timing chart of FIG. 6, the user operates the bottom cleaning switch 321 of the remote control 401 (T3), and the detection sensitivity of the human body detection unit 301 is switched from “high sensitivity” to “low sensitivity”. . In this state, a human body detection signal having a long output time is output from the human body detection sensor 310 (T5 to T6), and the human body detection recognition unit 320 determines that “human body is present”. As described above, even when the sensitivity is lowered, if the input count from the human body detection sensor 310 is long enough that the human body detection recognition unit 320 can determine the human body detection signal, the remote control signal transmission unit 439 A human body detection signal “human body existence” is transmitted to the receiving unit 262. However, since the frequency of transmission decreases, the power consumption is reduced as a result. Thus, the number of times that the signal is transmitted from the transmission unit 439 is relatively reduced as compared with the case where the sensitivity is not lowered, and the power consumption is reduced.

[Modification 1]
In all the above embodiments, when the elapsed time since the detection sensitivity of the human body detection unit 301 is reduced reaches a predetermined time, the human body detection recognition is performed so as to increase the detection sensitivity of the human body detection unit 301 that has been reduced. The unit 320 may control the human body detection sensitivity switching unit 331.

[Other variations]
In the second embodiment, when the buttocks cleaning switch 321, bidet cleaning switch 332, and drying switch 323 are operated, the detection sensitivity of the human body detection unit 301 is switched to low sensitivity. Instead of this, or together with this, when the operation switch 411 other than the stop switch 324 and the setting switch 420 are operated, the detection sensitivity of the human body detection unit 301 may be switched to low sensitivity. By operating the operation switch 411 and the setting switch 420, it is clear that the user is in the toilet room and is using the sanitary washing toilet seat apparatus 101. In such a case, even if the detection sensitivity for detecting the user is lowered, there is no problem of failing to detect the user. Further, by reducing the detection sensitivity, the energy consumption of the human body detection sensitivity switching unit 331 and the remote control signal transmission unit 439 is reduced.

  In the third embodiment, it is determined that the user is using the toilet by operating the operation switch 411. Based on this use information, the human body detection recognition unit 320 detects the detection sensitivity of the human body detection unit 301. May be temporarily reduced. Further, the human body detection recognizing unit 320 may raise or lower the detection sensitivity of the human body detection unit 301 which has been lowered due to the operation of the stop switch 324. Furthermore, when the stop switch 324 is not operated for a predetermined time, the human body detection recognizing unit 320 may raise the detection sensitivity of the human body detection unit 301 which has been lowered.

  Furthermore, in all the embodiments described above, when the human body detection sensor 310 detects a user with the detection sensitivity of the human body detection unit 301 being high, and the human body detection recognition unit 320 recognizes this user, the user If the toilet is used, the detection sensitivity may be switched to low sensitivity based on the toilet use information. Thus, when it is clear that the user exists in the toilet room, there is no problem of failing to detect the user. Further, by reducing the detection sensitivity, the energy consumption of the human body detection sensitivity switching unit 331 and the remote control signal transmission unit 439 is reduced.

  Further, in the second embodiment, when the stop switch 324 of the remote controller 401 is operated after the operation switch 411 is operated, the detection sensitivity of the human body detection unit 301 is switched to high sensitivity. Instead of or together with this, when the stop switch 324 is not operated for a predetermined time, for example, 5 minutes after the operation switch 411 is operated, the detection sensitivity may be switched to high sensitivity. If the operation switch 411 is operated a plurality of times, the detection sensitivity may be switched to high sensitivity after a predetermined time has elapsed since the last operation. As a result, after the operation switch 411 is operated, even if the stop switch 324 for stopping the operation is not operated for some reason, a predetermined time (for example, 5 minutes) has elapsed since the operation switch 411 was operated. Then, the detection sensitivity of the human body detection unit 301 returns to normal high sensitivity. For this reason, when the next user uses the toilet, the sanitary washing toilet seat device 101 detects the user quickly and opens the toilet lid 210 quickly, or heats the toilet seat 220 and washing water quickly. be able to.

In all the above embodiments, the toilet seat toilet lid rotation mechanism 215 is controlled to close the toilet lid 210 when the elapsed time after the body control unit 240 stops receiving the human body detection signal reaches a predetermined time. did. Until the elapsed time reaches the predetermined time, the elapsed time at which the main body control unit 240 receives the seating detection signal and the operation signal may be reset. In this case, the toilet lid 210 is prevented from being automatically closed even if the user has been in the toilet for a long time.
After the human body detection sensor 310 detects the user, the detection sensitivity may be switched to high sensitivity when a predetermined time has elapsed after the human body detection recognition unit 320 recognizes the presence of the user.

  Furthermore, in all the embodiments described above, when a predetermined time has elapsed since the detection sensitivity of the human body detection unit 301 was lowered, the human body detection recognition unit 320 determines the detection sensitivity of the human body detection unit 301 that has decreased. May be raised. At this time, the human body detection sensor 310 detects the human body, the operation switch 411 is operated, the seating detection sensor 250 detects the elapsed time after the detection sensitivity of the human body detection unit 301 is lowered within a predetermined time. The elapsed time may be updated by doing so. As a result, when the updated elapsed time has passed the predetermined time, the human body detection recognizing unit 320 increases the detection sensitivity of the human body detection unit 301 that is decreasing.

  Further, in the second embodiment, a pyroelectric infrared sensor is used as the human body detection sensor 310, but the human body detection sensor 310 is not limited to this. As the human body detection sensor 310, a passive sensor other than the pyroelectric infrared sensor or an active sensor can be used. Examples of the active sensor include an infrared sensor, a radio wave sensor, and an ultrasonic sensor. These sensors include a transmitting element and a receiving element. In this case, as in the case of the pyroelectric infrared sensor, the detection sensitivity can be switched by changing the number of amplifier circuits driven in the human body detection sensitivity switching unit 331. In the active type sensor, the detection sensitivity can be switched by changing the frequency of transmission by the transmitting element and the signal intensity. Thereby, the energy consumption for the human body detection sensor 310 to transmit is reduced.

  In the second embodiment, when the human body detection signal is input to the main body control unit 240, the main body control unit 240 opens the toilet seat 220 or heats the toilet seat 220 and the washing water. Absent.

  Furthermore, in the second embodiment, the amplification factor of the human body detection signal is adjusted by the number of the amplifier circuits to be driven. However, the present invention is not limited to this. For example, the amplification factor of the human body detection signal may be changed by connecting a circuit for adjusting the amplification factor of the human body detection signal to the amplification circuit in the human body detection sensitivity switching unit 331.

  Further, all the above embodiments may be combined with each other as long as they do not exclude each other.

  From the foregoing description, many modifications and other embodiments of the present invention are obvious to one skilled in the art. Accordingly, the foregoing description should be construed as illustrative only and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the invention. The details of the structure and / or function may be substantially changed without departing from the spirit of the invention.

  The toilet human body detection device of the present invention and the sanitary washing toilet seat device including the same are useful as a toilet human body detection device further reducing energy consumption and a sanitary washing toilet seat device including the same.

DESCRIPTION OF SYMBOLS 101 Sanitary washing toilet seat apparatus 110 Toilet bowl 201 Main body 210 Toilet lid 215 Toilet seat toilet lid drive mechanism (toilet lid rotation mechanism)
220 Toilet seat 230 Cleaning mechanism (cleaning device)
240 Main body control unit 1240 Control unit (main body control unit)
250 Seating detection sensor (sitting detection unit)
262 Main unit receiver (receiver)
1262 Main body transmission / reception unit (reception unit)
300 Human Body Detection Device for Toilet 301 Human Body Detection Unit 310 Human Body Detection Sensor (Pyroelectric Infrared Sensor)
320 Human body detection and recognition unit (sensitivity control unit)
321 Wet washing switch (operation unit)
322 Bidet washing switch (operation part)
323 Drying switch (operation unit)
324 Stop switch (operation unit)
411 Operation switch 439 Remote control signal transmission unit (transmission unit)
1439 Remote control signal transmission / reception unit (transmission unit)

Claims (13)

A toilet human body detection device used in a sanitary washing toilet seat device installed on a toilet,
A human body detection unit that detects a user who uses the toilet and outputs a human body detection signal;
A toilet human body detection device comprising: a sensitivity control unit that controls to temporarily reduce detection sensitivity of the human body detection unit based on toilet use information indicating that the user is using a toilet. A toilet human body detection device provided separately from the main body of the sanitary washing toilet seat device provided on the toilet,
A transmission unit that transmits a signal to a reception unit provided in the main body;
The toilet human body detection device according to claim 1, wherein the transmission unit is configured to transmit the human body detection signal whose detection sensitivity is controlled by the sensitivity control unit to the reception unit.   3. The toilet human body detection device according to claim 1, wherein the toilet use information is a human body detection signal that is not controlled by the sensitivity control unit while the human body detection unit detects and outputs the user. The sanitary washing toilet seat device further includes a seating detection unit that detects that the user is seated on the toilet seat disposed on the toilet,
3. The toilet human body detection device according to claim 1, wherein the toilet use information is a seating detection signal that the seating detection unit detects and outputs that the user is seated. The toilet human body detection device or the sanitary washing toilet seat device further includes an operation unit that operates the main body of the sanitary washing toilet seat device to stop the operation,
The toilet body detection apparatus according to claim 1 or 2, wherein the toilet use information is an operation operation signal for operating the main body of the operation unit.   When the sensitivity control unit receives the human body detection signal, the sensitivity of the human body detection unit is reduced, and when the elapsed time after the reduction of the detection sensitivity of the human body detection unit reaches a predetermined time, the sensitivity control unit decreases. The toilet human body detection device according to claim 3, configured to increase detection sensitivity of the human body detection unit.   The sensitivity control unit decreases the detection sensitivity of the human body detection unit when the seating detection unit outputs the seating detection signal, and then decreases when the seating detection unit does not output the seating detection signal. The toilet human body detection device according to claim 4, wherein the human body detection unit is configured to increase detection sensitivity of the human body detection unit.   The sensitivity control unit decreases the detection sensitivity of the human body detection unit when the operation unit outputs the operation operation signal, and then decreases when the operation unit outputs a stop operation signal for stopping the operation of the main body. The toilet human body detection device according to claim 5, wherein the human body detection device is configured to increase detection sensitivity of the human body detection unit.   The sensitivity control unit lowers the detection sensitivity of the human body detection unit when the operation unit outputs the operation operation signal, and then the operation unit does not output a stop operation signal for stopping the operation of the main body. The toilet human body detection device according to claim 5, wherein the human body detection device is configured to increase detection sensitivity of the human body detection unit that is lowered when time passes. The human body detection unit includes a pyroelectric infrared sensor,
An amplifying unit for amplifying the human body detection signal of the infrared sensor;
The human body detection device for a toilet according to any one of claims 1 to 9, wherein the sensitivity of the human body detection unit is reduced by stopping energization of the amplification unit. The human body detection unit includes a reflective infrared sensor including a light emitting element and a light receiving element,
The toilet human body detection device according to any one of claims 1 to 9, wherein the sensitivity of the human body detection unit is reduced by decreasing the number of times the light emitting element is issued per unit time. A human body detection device for toilets according to any one of claims 1 to 11, and a main body installed on the toilet,
The main body includes a toilet seat, a toilet lid that covers the toilet seat, a cleaning device that cleans a local part of a user seated on the toilet seat, and a main body control unit that controls the operation of the main body,
The main body control unit makes the main body usable based on receiving the human body detection signal from the human body detection unit of the toilet human body detection device, and no longer receives the human body detection signal from the human body detection unit. A sanitary washing toilet seat device configured to terminate the usable state of the main body based on the above. The main body further includes a toilet lid rotation mechanism for opening and closing the toilet lid,
The main body control unit can use the main body by controlling the toilet lid rotation mechanism to open the toilet lid based on receiving a human body detection signal from the human body detection unit of the toilet human body detection device And is configured to control the toilet lid rotation mechanism to close the toilet lid based on the fact that the human body detection signal from the human body detection unit is not received and to end the usable state of the main body. The sanitary washing toilet seat device according to claim 12.

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