JP5987166B2 - Sanitary washing device - Google Patents

Description

  The present invention relates to a sanitary washing apparatus including a remote controller that performs non-contact operation of an electric mechanism.

  Conventionally, in this type of non-contact remote controller, one light detection means for detecting the illuminance outside the remote controller, three optical sensors for detecting the non-contact operation, and the non-contact operation are determined. The illuminance comparison circuit is configured to determine a non-contact operation based on the illuminance difference between the light detection means and each of the optical sensors, and the illuminance difference between two or more optical sensors simultaneously exceeds a threshold value. In such a case, it is determined that the non-contact operation of the optical sensor having a large illuminance difference is performed (see, for example, Patent Document 1).

JP 2011-182244 A

  However, in the conventional configuration, the determination of the non-contact operation is performed only by the difference in illuminance between the light detection means and the optical sensor, and does not include an element of the speed of operation associated with the non-contact operation. Even if the user does not intend to perform the operation and approaches the optical sensor slowly, it is determined as a non-contact operation and the possibility of erroneous detection is high.

  In addition, when the difference in illuminance with a plurality of optical sensors is equal to or greater than the threshold value at the same time, it is determined that the non-contact operation of the optical sensor having a large illuminance difference has been performed. Even if multiple optical sensors are unintentionally covered with the user's body or object, it will be mistakenly detected as a non-contact operation, and the corresponding function will be activated, leading to safety and reliability. There was still room for improvement.

  The present invention solves the above-described conventional problems, and performs determination of a non-contact operation using two elements of a change amount and a change rate of an output voltage of a non-contact switch. An object of the present invention is to provide a highly reliable sanitary washing apparatus by suppressing false detection by using a rate of change that is an element of the speed of operation in addition to the amount of change in illuminance due to the shade.

In order to solve the conventional problem, a sanitary washing device of the present invention is a remote controller that is installed on a toilet and has a plurality of electric mechanisms and a remote controller that operates the electric mechanism separately from the main body. The remote controller includes a plurality of non-contact switches that detect proximity of a user's body part using an illuminance sensor, a remote control controller that detects detection information of the non-contact switches, and an operation signal to the main body. The remote controller control unit detects a change amount of the output voltage of the non-contact switch, and a change that detects a change rate of the output voltage of the change amount detection unit. a rate detecting unit and determining an information processing unit to the non-contact operation, and a timer, the information processing unit, the tie for variation and rate of change of the plurality of output voltages of the non-contact switch Is obtained by said determining a non-touch operation based on the time course was counted by chromatography.

  Thus, by comparing the output voltages of a plurality of non-contact switches, it becomes possible to determine a noise event that is difficult to determine with only one sensor, and a more accurate determination can be made. In particular, by using the output of the rate-of-change detection unit for sensors corresponding to a plurality of non-contact switches, it becomes possible to make a determination focusing on the operation speed, and particularly when two non-contact switches are covered simultaneously, It is possible to suppress erroneous detection of an illuminance change that does not intend a non-contact operation due to lighting off or the like, and it is possible to improve the reliability of the non-contact operation.

  The sanitary washing device of the present invention can improve the reliability of non-contact operations.

The perspective view which shows the external appearance of the sanitary washing apparatus in Embodiment 1 of this invention. Block diagram of the control system of the sanitary washing device in Embodiment 1 of the present invention The perspective view which shows the external appearance of the remote controller in Embodiment 1 of this invention The front view of the state which open | released the front panel of the remote controller in Embodiment 1 of this invention AA sectional view shown in FIG. BB sectional view shown in FIG. Sectional drawing which shows the C section detail shown in FIG. The perspective view which shows the detail of the human body detection sensor in Embodiment 1 of this invention. Sectional drawing of the horizontal direction of the human body detection sensor in Embodiment 1 of this invention The schematic diagram which shows the detection range of the vertical direction of the human body detection sensor in Embodiment 1 of this invention. The schematic diagram which shows the detection range of the horizontal direction of the human body detection sensor in Embodiment 1 of this invention. Block diagram of the control system of the remote controller in Embodiment 1 of the present invention Schematic diagram showing the corresponding illuminance of the sensitivity adjustment resistor in the first embodiment of the present invention The graph which shows the output voltage in the determination operation | movement of non-contact operation in Embodiment 1 of this invention The graph which shows the output voltage in the state where the illumination intensity of two illumination intensity sensors fell simultaneously Time chart of non-contact operation using the second illuminance sensor

A first invention includes a main body installed on a toilet and incorporating a plurality of electric mechanisms, and a remote controller that operates the electric mechanism separately from the main body, and the remote controller is a user A plurality of non-contact switches that detect the proximity of the body part by an illuminance sensor, a remote control controller that detects detection information of the non-contact switch, and a transmitter that transmits an operation signal to the main body. The control unit includes a change amount detection unit that detects a change amount of the output voltage of the non-contact switch, a change rate detection unit that detects a change rate of the output voltage of the change amount detection unit, and information for determining a non-contact operation. A non-contact operation based on a change over time measured by the timer with respect to a change amount and a change rate of the output voltage of the plurality of non-contact switches. It is obtained by and judging.

  Thus, by comparing the output voltages of a plurality of non-contact switches, it becomes possible to determine a noise event that is difficult to determine with only one sensor, and a more accurate determination can be made. In particular, by using the output of the rate-of-change detection unit for sensors corresponding to a plurality of non-contact switches, it becomes possible to make a determination focusing on the operation speed, and particularly when two non-contact switches are covered simultaneously, It is possible to suppress erroneous detection of an illuminance change that does not intend a non-contact operation due to lighting off or the like, and it is possible to improve the reliability of the non-contact operation.

  According to a second invention, in the first invention, the information processing unit starts the determination operation of the non-contact operation when an output voltage of the change rate detection unit reaches a threshold value, and the information processing unit Is characterized in that the determination operation of the non-contact operation is not started when the time difference of the output voltage of the change rate detection unit corresponding to the non-contact switch is equal to or less than a predetermined time. .

  Thereby, in particular, by using the output of the change rate detection unit for the determination, it is possible to determine that it is not a non-contact operation at an early timing, and the determination accuracy is improved.

  According to a third invention, in the first or second invention, the information processing unit performs determination processing in parallel on sensor outputs corresponding to the plurality of non-contact switches, and the plurality of non-contact switches It is determined that the two are operated simultaneously.

  Thus, by performing determination processing in parallel for a plurality of non-contact operation switches, it is possible to eliminate erroneous determinations that occur only by determining individual non-contact operations, and improve determination accuracy.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a perspective view of the appearance of the sanitary washing apparatus according to the present embodiment installed on a toilet, and FIG. 2 shows a block diagram of a control system of the sanitary washing apparatus.

<1> Configuration of Sanitary Washing Device As shown in FIG. 1, the sanitary washing device 100 includes a main body 200, a toilet lid 210, a toilet seat 220, and a remote controller 400. The main body 200, the toilet lid 210, and the toilet seat 220 are integrated. It is constructed and installed on the upper surface of the toilet 110.

  In this embodiment, the installation side of the main body 200 of the sanitary washing device 100 is the rear, the installation side of the toilet seat 220 is the front, the right side is the front side, the right side is the front side, and the left side is the left side. The arrangement will be described.

  A toilet lid 210 and a toilet seat 220 are attached to the main body 200 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 as shown in FIG. 1, the toilet lid 210 stands so as to be positioned at the rearmost part of the sanitary washing device 100. When the toilet lid 210 is closed, the upper surface of the toilet seat 220 is concealed. The toilet seat 220 has a built-in toilet seat heater 221 that heats the seating surface of the toilet seat to a comfortable temperature.

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

  In the main body 200, a cleaning water supply mechanism (not shown), a heat exchanger (not shown), a cleaning mechanism 230 for cleaning a local part of the human body constituted by a cleaning nozzle 231, etc., and a local part after cleaning are provided. A drying device (not shown) for drying, a main body control unit 240 and the like are incorporated.

A cleaning nozzle 231 is installed in the lower center of the main body 200. The main structure of the cleaning mechanism 230 includes a cleaning water supply mechanism (not shown) installed in the main body 200, a heat exchanger (not shown) for heating the cleaning water, and a flow rate adjustment for adjusting the flow rate of the cleaning water. A mechanism (not shown) is connected to the cleaning nozzle 231, supplying hot water heated by a heat exchanger to the cleaning water supplied from the water pipe to the cleaning nozzle 231, and directed from the cleaning nozzle 231 toward the user's local area. Hot water is blown out to wash the user's local area.

  The washing nozzle 231 includes a butt washing nozzle part for washing the butt and a bidet nozzle part for washing a female part. The cleaning nozzle 231 includes a nozzle drive mechanism (not shown) that moves back and forth between a storage position accommodated in the main body 200 and a cleaning position that protrudes from the main body 200 and performs a cleaning operation.

  A seating detection sensor 250 is installed at a front corner portion of the main body 200. The seating detection sensor 250 is a reflective infrared sensor that detects the presence of a user on the toilet seat 220 by emitting infrared rays and receiving infrared rays reflected by the human body.

  On the right side of the main body 200, a sleeve portion 260 is formed integrally with the main body 200, and on the upper surface of the sleeve portion 260, a main body operation portion 261 and an infrared receiving portion that receives an infrared signal transmitted from the remote controller 400. The main body operation unit 261 has a power switch 261a that is the most important function of the sanitary washing device 100, and an butt washing switch that operates the butt washing function that is used most frequently among the washing functions. 261b and an indicator lamp 261c corresponding to the operation state of each switch are arranged.

  In addition, an electronic buzzer 263 is installed inside the sleeve 260 as a notification device that notifies the user of the operation state. As a notification function of the buzzer 263, the first is notification of an erroneous operation. For example, when the user operates the buttocks washing switch 261b that operates the buttocks washing function without being seated on the toilet seat 220, the buttocks washing function does not operate and the buzzer 263 continuously plays a short single sound twice. To alert you of an incorrect operation.

  The second is notification for the purpose of warning for improving safety. For example, when opening / closing operation of the toilet seat 220 is performed, in order to prevent the rotating toilet seat from coming into contact with the user, a notification sound is generated before the toilet seat is driven to rotate. The notification sound in this case is composed of three sounds having different pitches. When the toilet seat 220 is erected, the notification sound is emitted from the low to high scale, and when the toilet seat is inverted, the high to low scale is used. By making a notification sound, the rotation direction of the toilet seat 220 can be recognized.

  The remote controller 400 is configured separately from the main body 200, and is attached to a place such as a wall surface of a toilet room that is easy for a user sitting on the toilet seat 220 to operate. The remote controller 400 is provided with a human body detection sensor 300 for detecting a user who enters and exits the toilet room and a plurality of switch functions and display functions for operating and setting each function of the sanitary washing device 100. The detailed configuration and operation of the remote controller 400 will be described later.

  When there is no user in the toilet room, the sanitary washing device 100 of the present invention stops energizing the toilet seat heater 221 or keeps the temperature at a standby temperature of about 20 ° C. When the user enters the toilet room, the toilet seat heater 221 is energized by receiving a signal from the human body detection sensor 300. The toilet seat heater is a very high output heater of about 800W, and the seating surface of the toilet seat 220 is about 40 ° C. for about 6 to 10 seconds after the user enters the toilet room and sits on the toilet seat. Increase the temperature to the set temperature.

After the toilet seat reaches the set temperature, the energization of the toilet seat heater 221 is lowered to a low wattage of about 50 W to maintain the set temperature. When the user gets out of the toilet room, the energization to the toilet seat heater is stopped or the standby temperature becomes about 20 ° C. That is, it is a sanitary washing device that greatly reduces power when there is no user in the toilet room.

<2> Basic Operation and Action of Sanitary Cleaning Device When the human body detection sensor 300 of the remote controller 400 detects a human body, the remote controller 400 transmits a human body detection signal from the infrared transmission unit 436 and the infrared reception unit 262 of the main body 200. The human body detection signal received in step S1 is transmitted to the main body control unit 240. The main body control unit 240 opens the toilet lid 210 by driving the toilet seat toilet lid rotation mechanism 215 and energizes the toilet seat heater 221 of the toilet seat 220. The temperature is raised within 10 seconds so that the seating surface of the toilet seat 220 is about 40 ° C. suitable for seating.

  When the user is seated on the toilet seat 220, the seating detection sensor 250 detects the seating, and the main body control unit 240 receives the seating signal, thereby operating the buttocks cleaning switch 261b of the main body 200 and the cleaning function of the remote controller 400. Is possible.

  After the user finishes the stool and finishes the local cleaning by the cleaning mechanism 230, the user stands up from the toilet seat 220 and exits the toilet room, and the human body detection signal from the human body detection sensor 300 of the remote controller 400 is transmitted. When the operation stops, the main body control unit 240 automatically closes the toilet lid 210 by driving the toilet seat toilet lid rotation mechanism 215 after a predetermined time has elapsed since the completion of human body detection (in this embodiment, three minutes later). At the same time, the energization to the toilet seat heater 221 is stopped, and then the control is performed so that the standby temperature is maintained when the toilet seat heater 221 is lowered to the standby temperature.

  When the user is for boys, the user enters the toilet room and the user opens the toilet seat 220 with the remote controller 400 while the toilet lid 210 is opened by a signal from the human body detection sensor 300 of the remote controller 400. By performing the standing operation, the main body control unit 240 drives the toilet seat toilet lid rotation mechanism 215 to erect the toilet seat 220, stops energization of the toilet seat heater 221, and then reduces the standby temperature to the standby temperature. Control to maintain.

  When the user finishes the boy's small business, exits the toilet room, and completes the transmission of the human body detection signal from the human body detection sensor 300 of the remote controller 400, the main body control unit 240, after a predetermined time has passed (in this embodiment 3 minutes later), the toilet seat toilet lid rotation mechanism 215 is driven to close the toilet lid 210 and the toilet seat 220.

  As described above, when the main body control unit 240 receives operation signals from the remote controller 400 and the main body operation unit 261, the main body control unit 240 determines whether the operation signal is received depending on whether the seating signal of the seating detection sensor 250 is being received. Appropriateness is determined and driving of each function of the main body 200 is controlled.

  For example, even if an operation signal for opening the toilet seat 220 is received during reception of the seating signal, the operation signal is canceled and the toilet seat toilet lid rotation mechanism 215 is not driven.

  In addition, when the operation signal of the cleaning mechanism 230 is received while the seating signal is not received, the operation signal is canceled and the cleaning mechanism is not driven.

  The detailed configuration and operation of the remote controller 400 will be described later.

<3> Configuration of Remote Controller FIG. 3 is a perspective view showing an external appearance of the remote controller in use, FIG. 4 is a front view showing a state in which the front panel of the remote controller is opened, and FIG. 5 is shown in FIG. 6 is a cross-sectional view taken along the line AA, FIG. 6 is a cross-sectional view taken along the line BB shown in FIG. 3, FIG. 7 is a cross-sectional view showing details of the C portion shown in FIG. 9 is a detailed cross-sectional view in the horizontal direction of the human body detection sensor mounting portion, FIG. 10 is a schematic diagram showing a detection range in the vertical direction of the human body detection sensor, and FIG. 11 is a horizontal direction of the human body detection sensor. It is a schematic diagram which shows the detection range.

  As shown in FIG. 3, the overall shape of the remote controller 400 is formed in a thin rectangular parallelepiped, and is composed of a box-shaped remote control body 401 formed of a resin material and a front panel 402 covering the front surface of the remote control body. The front panel 402 is pivotally supported at the front lower end portion of the remote control main body 401 so as to be openable and closable, and magnets 401a provided on the left and right in the vicinity of the upper end of the remote control main body 401 and a stainless steel receiving plate provided at a corresponding position on the front panel. By 402c, it is the structure which maintains the obstruction | occlusion state of the front panel 402 using magnetic force.

  During normal use, the front panel 402 is used in a closed state as shown in FIG. 3, and when the setting of the remote controller 400 and operations that are not normally used are performed, the front panel 402 is opened as shown in FIG. To use.

  As shown in FIG. 4, an operation switch 410 and a human body detection sensor 300 that are frequently used when using the sanitary washing device 100 are mainly arranged on the front surface of the remote control main body 401, and the hygiene is mainly arranged on the lower portion. A setting switch 420 for setting functions of the cleaning apparatus 100 and an operation switch 410 that is not normally used are arranged, and two illuminance sensors 440 used for non-contact operation and non-contact operation are arranged in the center. An operation switch 410 capable of similar operations is provided. The operation switch 410 and the setting switch 420 are tact switches that are contact switches that are operated by directly contacting the operation unit of the switch. Further, since the illuminance sensor 440 that is a non-contact switch is a switch that is operated for two independent functions, it is better to prevent the erroneous operation if it is located as far as possible. However, if the switch arrangement with design is taken into consideration, it must be provided in the vicinity, and the distance between the switches is presented at least to the remote control with the palm of the adult facing the remote control, assuming at least the operation of a hand-hold that allows non-contact operation. In such a case, the distance is set so as not to be simultaneously hidden by the hand-holding operation.

  The operation switch 410 that can be used with the front panel 402 closed includes a toilet lid opening / closing switch 411, a bidet washing switch 412 for starting local washing of women, and a drying switch 413 for starting drying of the buttocks after washing. A buttocks washing switch 415 for washing the buttocks, a bidet washing switch 412, a stop switch 414 for stopping the operation started by the buttocks washing switch 415 and the drying switch 413, and a toilet seat opening / closing switch 416 for raising and lowering the toilet seat 220. Has been placed.

  The toilet lid opening / closing switch 411, the bidet washing switch 412, the drying switch 413, and the stop switch 414 are arranged in a horizontal row on the top of the remote controller 400, and the buttocks washing switch 415 and the toilet seat opening / closing switch 416 are arranged on the remote controller 400. They are arranged on the same vertical line in the central portion with a gap.

  Further, as the operation switch 410 that can be used only when the front panel 402 is opened, a rhythm switch 417 for changing the washing water for the buttocks washing strength and a wide for expanding the ejection range of the washing water for the buttocks washing. A switch 418 and a move switch 419 for repeatedly moving the cleaning position during cleaning back and forth are arranged.

The setting switch 420 includes a strength switch 421 for setting the strength of the washing water during washing and the hot air temperature of the drying apparatus during drying with two switches, and a washing position for setting the washing position with two switches. A switch 422, a hot water temperature switch 423 for setting the temperature of the washing water,
Toilet seat temperature switch 424 for setting the temperature of the toilet seat, 8 hour switch 425 for lowering the standby temperature of the toilet seat 220 for 8 hours at night when the sanitary washing device is not used, and a power saving switch for cutting off the power to the toilet seat 220 when not in use 426, an automatic opening / closing switch 427 for setting automatic opening / closing of the toilet lid 210 and the toilet seat 220, a touchless switch 428 for setting non-contact operation by the illuminance sensor 440, and a nozzle sterilizing switch for setting high-temperature sterilization of the nozzle 429 is disposed.

  Further, in the vicinity of the intensity switch 421, an intensity indicator lamp 431 composed of five LEDs for displaying the intensity of the purified water in five levels, and in the vicinity of the cleaning position switch 422, the cleaning position is displayed in five levels. A position indicator lamp 432 composed of five LEDs, a hot water temperature indicator lamp 433 composed of three LEDs for displaying the setting of the warm water temperature in three stages, and a toilet seat In the vicinity of the temperature switch 424, a toilet seat temperature indicator lamp 434 composed of three LEDs for displaying the toilet seat temperature setting in three stages, and a battery indicator composed of one LED for displaying the battery consumption state. A lamp 435 is provided.

  The front surface of the remote control body 401 corresponding to the indicator lamp 430 and the illuminance sensor 440 is covered with a transparent film. Among the indicator lamps, the intensity indicator lamp 431 and the battery indicator lamp 435 are configured such that the display can be visually recognized from the outside with the front panel 402 closed.

  A first illuminance sensor 441 is disposed adjacent to the bottom of the buttocks washing switch 415, and a second illuminance sensor 442 is disposed adjacent to the bottom of the toilet seat opening / closing switch 416.

  The first illuminance sensor 441 and the second illuminance sensor 442 are used as non-contact switches, and detect a change in illuminance that occurs when a user brings a hand close as a change in output voltage. This is to detect an operation of bringing the user's hand closer to the first illuminance sensor 441 and the second illuminance sensor 442.

  The first illuminance sensor 441 is a non-contact switch for operating the buttocks cleaning, and operates to start and stop the buttocks cleaning. The stop of the buttocks cleaning can also be operated with the stop switch 414. When the first illuminance sensor 441 is operated, the cleaning mechanism 230 is driven and the butt cleaning is started.

  The second illuminance sensor 442 is a non-contact switch that opens and closes the toilet seat 220 by driving the toilet seat toilet lid rotating mechanism 215. If the toilet seat 220 is operated in an inverted state, the toilet seat toilet lid rotating mechanism 215 is It is driven and the toilet seat 220 is erected. Further, if the toilet seat 220 is operated in a standing state, the toilet seat toilet lid rotating mechanism 215 is driven and the toilet seat 220 is inverted.

  An infrared transmission unit 436 that transmits operation information and setting information to an infrared reception unit 262 installed on the sleeve portion 260 of the main body 200 is disposed at the upper corner portion of the remote control main body 401. The infrared transmitter 436 includes an infrared light emitting diode as a light emitting element.

  As shown in FIGS. 4 and 5, the front panel 402 operates a substantially flat resin-made panel frame 402 a, a back cover 402 b, and an operation switch 410 installed on the remote control body 401 from the surface of the front panel 402. It consists of a plurality of operation buttons 403.

  The operation button 403 includes a toilet lid opening / closing switch 411, a bidet washing switch 412, a drying switch 413, a stop switch 414, a buttocks washing switch 415, and a toilet seat opening / closing switch 416 that can be used with the front panel 402 closed. It is installed in the corresponding position.

  By pressing the operation button 403 from the surface of the front panel 402 with the front panel 402 closed, the corresponding operation switch 410 can be operated. In FIG. 3, the operation switch 410 corresponding to each operation button 403 is displayed in parentheses.

  A portion 404 corresponding to the first illuminance sensor 441, the second illuminance sensor 442, the intensity indicator lamp 431, and the battery indicator lamp 435 of the front panel 402 is formed with a transmission portion 404 that transmits light. Thereby, while being able to visually recognize the intensity indicator lamp 431 and the battery indicator lamp 435 from the surface of the front panel 402, the first illuminance sensor 441 and the second illuminance sensor 442 can detect an illuminance change. Thus, a non-contact operation is possible with the front panel 402 closed.

  As shown in FIG. 5, a first illuminance sensor 441 and a second illuminance sensor 442 are arranged on the substrate with an interval inside the remote control main body 401. A tact switch buttocks cleaning switch 415 is installed adjacent to the upper side of the first illuminance sensor 441, and a toilet seat opening / closing switch 416 of the tact switch is installed adjacent to the upper side of the second illuminance sensor 442.

  A remote control main body 401 on which the tact switch buttocks cleaning switch 415 and the toilet seat opening / closing switch 416 are arranged is integrally formed with an operation portion 401b that can be moved in and out using the elasticity of resin, and presses the operation portion 401b. By doing so, the butt washing switch 415 and the toilet seat opening / closing switch 416 can be operated. The other operation switches 410 and setting switches 420 have the same configuration.

  The butt cleaning switch 415, the toilet seat opening / closing switch 416, and the operation unit 401b are integrally formed with a daylighting unit 401c including a through hole. The first illuminance sensor 441 and the second illuminance sensor 442 are illuminated via the daylighting unit 401c. It is configured to detect changes.

  On the front panel 402, operation buttons 403 are provided at portions corresponding to the operation unit 401b of the remote control main body 401, respectively. The operation button 403 has a substantially circular surface shape that is easy to operate with a finger. On the back side, a protrusion is integrally formed in a bar shape that presses the operation portion 401b. Each operation switch 410 can be operated from the surface of the front panel 402 by pressing the operation button 403 by being supported between the back cover 402b.

  The operation button 403 corresponding to the buttocks washing switch 415 and the toilet seat opening / closing switch 416 is provided with a transmission part 404 formed of a through hole.

  A configuration in which the first illuminance sensor 441 and the second illuminance sensor 442 can detect an illuminance change in a state where the front panel is closed via a transmission unit 404 provided on the operation button 403 and a lighting unit 401c provided on the operation unit 401b. It has become.

  The non-contact operation is performed by detecting the illuminance change of the first illuminance sensor 441 and the second illuminance sensor 442, and the illuminance change due to the shadow generated during the opening / closing operation of the front panel 402 is erroneously detected as the non-contact operation. Therefore, the illuminance change of the first illuminance sensor 441 and the second illuminance sensor 442 accompanying the opening operation of the front panel 402 may be erroneously detected as a non-contact operation. An open / close detection sensor 437 for detection is provided.

As shown in FIG. 6, the open / close detection sensor 437 includes a switch magnet 437a installed on the back surface of the front panel 402 and a reed switch 437b installed on the remote control body 401. When the front panel 402 is in a closed state, When the contact of the switch 437b is turned on and the front panel 402 is in the open state, the contact of the reed switch 437b is turned off and the open / closed state of the front panel can be detected.

  In the state where the reed switch 437b is OFF, the illuminance sensor driving unit 525 that drives the first illuminance sensor 441 and the second illuminance sensor 442 is stopped, and the first illuminance sensor 441 and the second illuminance sensor 442 change the illuminance. The configuration cannot be detected. Accordingly, it is possible to prevent the first illuminance sensor 441 and the second illuminance sensor 442 from erroneously detecting the shade generated during the opening / closing operation of the front panel 402 as a non-contact operation.

  When the front panel 402 is closed and the contact of the reed switch 437b is ON, a position indicator lamp 432, a hot water temperature indicator lamp 433, and a toilet seat temperature indicator lamp 434 that are visible only when the front panel 402 is open. Is configured to suppress power consumption by turning off the light.

  A transmission portion 404 is formed in a portion corresponding to the intensity indicator lamp 431 of the front panel 402. In the configuration of the transmissive portion 404, a light guide body 405 formed of a transparent resin material is installed in a transmissive path 404a that penetrates the panel frame 402a and the back cover 402b of the front panel 402.

  The light guide 405 is sandwiched between the panel frame 402a and the back cover 402b of the front panel 402 by a flange 405b formed on the outer periphery of the substantially cylindrical light guide 405a.

  A convex substantially hemispherical light receiving portion 405c having a diameter approximately twice that of the light guide portion 405a is formed at the rear end of the light guide 405 facing the intensity indicator lamp 431, and the received light is received. It has a lens function to collect light. In addition, a plane having a diameter about half that of the light guide 405a is formed at the center of the substantially hemispherical light receiving part 405c, and the light received at this part goes straight to the light guide 405a. Yes.

  The light emitting unit 405d, which is the tip of the light guide 405, is disposed so as to slightly protrude from the surface of the front panel 402. The light emitting portion 405d is formed in a matte state with fine irregularities, and the light that has passed through the light guide portion 405a is irregularly reflected by the light emitting portion 405d, so that the light emitting portion 405d appears to emit light. It can be visually recognized from the range of angles.

  The portion corresponding to the position indicator lamp 432 of the front panel 402 is not formed with a transmission portion, and the position indicator lamp 432 is visible only when the front panel 402 is opened.

  The human body detection sensor 300 is configured integrally with a pyroelectric sensor 310 and a mirror 320 that reflects infrared light from a wide range and enters the pyroelectric sensor 310. The human body detection sensor 300 is a translucent resin that transmits infrared light. It is covered with a cover 330 molded in (1).

  FIG. 8 is a perspective view showing the detailed appearance of the human body detection sensor, FIG. 9 is a detailed cross-sectional view in the horizontal direction of the human body detection sensor mounting portion, and FIG. 10 shows the vertical detection range of the human body detection sensor. FIG. 11 is a schematic diagram illustrating a lateral detection range of the human body detection sensor.

As shown in FIG. 8, the human body detection sensor 300 is provided with a mirror 320 in front of a pyroelectric sensor 310 that receives infrared rays emitted from the human body. The mirror 320 is integrally formed with a cylindrical reflecting tube 321 and a support portion 322 that supports the reflecting tube 321. The reflecting cylinder 321 is formed in a cylindrical shape that expands in a trumpet shape from the inside toward the outside.

  As shown in FIG. 9, the pyroelectric sensor 310 and the mirror 320 are covered with a resin cover 330. The cover 330 is integrally formed of milky white translucent high density polyethylene resin (HDPE), and can transmit infrared rays, and the human body detection sensor 300 cannot be visually recognized from the outside.

  As shown in FIG. 9, in the cover 330, the outer surface 331a of the front surface portion 331 has a radius R1 of about 65 mm, and the inner surface 331b has a radius R2 of about 80 mm larger than the outer surface 331a. By forming in this way, the thickness W1 of the center of the cover 330 disposed at a position facing the center of the human body detection sensor 300 is about 2 mm, whereas the side end positioned at the periphery The thickness W2 is about 0.8 mm. The outer surface 331a at the side end is installed so as to be substantially flush with the front surface of the front panel 402.

  When the cover having the above-described configuration is used, the distance of the transmission path through which the infrared rays passing through the cover 330 and traveling toward the center of the light receiving surface 311 of the pyroelectric sensor 310 passes through the inside of the resin front portion 331 is about the center portion. Although it is 2 mm, it is about 2.2 mm in the vicinity of the side edge, and it is possible to suppress the variation in the distance of the transmission path over the entire surface of the cover 330 to 10% or less. Infrared light can be received stably.

  In addition, the mirror 320 disposed in the vicinity of the cover 330 is completely hidden by being covered with the thick portion of the cover 330, and the shape of the mirror 320 cannot be visually recognized from the outside. An improving effect can be obtained.

  As shown in FIGS. 10 and 11, the light receiving surface 311 of the pyroelectric sensor 310 of the human body detection sensor 300 is installed at a position that is inward from the front surface of the front panel 402 that is the outer shell of the remote controller 400. On the other hand, a part of the reflecting cylinder 321 of the mirror 320 is installed at a position that is outward from the front surface of the front panel 402.

  Supporting portions 322 are integrally formed on the upper and lower portions of the reflecting cylinder 321. Therefore, infrared rays cannot enter the outer surface of the reflecting cylinder 321 from the vertical direction.

  Support portions 322 are not formed on both side portions of the reflection tube 321, and an opening portion 323 is formed, and the outer surface of the reflection tube 321 is opened from the side near the front surface of the front panel 402 through the opening portion 323. Infrared rays can be incident.

  A circular opening 325 is provided on the front surface 324 of the mirror 320, and the inner surface of the opening 325 is integrally formed so as to be connected to the inner peripheral surface 326 of the reflecting tube 321. The inner peripheral surface 326 of the reflecting cylinder 321 is formed by a substantially conical inclined surface that becomes narrower from the outside toward the inside, and the inclined surfaces facing each other form about 45 degrees. In addition, the outer peripheral surface 327 of the reflecting cylinder 321 is formed to be steeper than the inner peripheral surface 326, and the opposing inclined surfaces form about 100 degrees.

  The inner peripheral surface 326 and the outer peripheral surface 327 are joined so that the inclined surfaces intersect at the tip portion 328. The mirror 320 is integrally formed of a resin material, and has a structure in which the surface is plated to easily reflect infrared rays. As shown in FIG. 10, infrared rays irradiated from the front of the human body detection sensor 300 indicated by arrows Y1 and Y2 and infrared rays irradiated from the vertical direction indicated by arrows Y1 and Y2 pass through the inside of the reflection tube 321 of the mirror 320. Then, it directly reaches the light receiving surface 311 of the pyroelectric sensor 310. Infrared rays irradiated from the outside of the arrows Y 1 and Y 2 are reflected by the inner peripheral surface 326 of the reflecting cylinder 321 and reach the light receiving surface 311. Therefore, the range in the vertical direction that can be detected by the pyroelectric sensor 310 is about 60 degrees.

  As shown in FIG. 11, the infrared rays irradiated from the left and right directions of the human body detection sensor 300 partially pass through the inside of the reflecting cylinder 321 similarly to the irradiation from the vertical direction, and the light receiving surface 311 of the pyroelectric sensor 310. To reach. A part of the light passes through the opening 323 and directly reaches the light receiving surface 311 of the pyroelectric sensor 310 as indicated by arrows Y5 and Y6 in the figure.

  Infrared rays irradiated from a wide angle near the front surface of the remote controller 400 are reflected by the outer peripheral surface 327 of the reflecting cylinder 321 and reach the light receiving surface 311 of the pyroelectric sensor 310 as indicated by arrows Y7 and Y8 in the figure. Therefore, the range in the left-right direction that can be detected by the pyroelectric sensor 310 is about 160 degrees.

  Since the remote controller 400 is generally installed at a height (about 80 cm to 100 cm) that is easy for a user to sit and use, it can receive infrared rays in a range close to a horizontal plane with a wide installation height. Thus, it is possible to cope with a wide range of heights from children to adults, and the probability of light reception can be improved.

  In order to receive infrared rays from a wide range as described above, the light receiving surface 311 of the pyroelectric sensor 310 of the human body detection sensor 300 is installed inward from the front surface of the front panel 402 of the remote controller 400, and A part of the inner peripheral surface 326 and the outer peripheral surface 327 of the reflecting tube 321 is installed at a position that is outward from the front surface of the front panel 402.

  By installing in this way, even when the human body detection sensor 300 is installed with hardly protruding from the front surface of the remote controller 400, it is possible to detect a human body that exists in a wide range of 160 degrees or more on the horizontal plane of the installation position. It is possible.

<4> Configuration of Control System of Remote Controller FIG. 12 is a block diagram showing the configuration of the control system of the remote controller, and FIG. 13 is a schematic diagram showing the corresponding illuminance of the sensitivity adjustment resistor.

  As shown in FIG. 12, the remote controller 400 includes a pyroelectric sensor 310 of the human body detection sensor 300, an operation switch 410, a setting switch 420, an open / close detection sensor 437, and a first illuminance sensor 441 as information input means. The second illuminance sensor 442 is provided, and as an output means, an infrared transmitter 436 that transmits control information to the main body 200 by infrared rays and an indicator lamp 430 that displays the control information are provided. A remote control unit 500 for processing detection information and operation information is provided. A battery 450 is provided as a drive source for the remote controller 400.

  The remote controller control unit 500 that processes various types of information of the remote controller 400 includes a switch operation detection unit 510 that detects the operation of the operation switch 410 and the setting switch 420 configured by contact switches as means for detecting an operation signal. ing.

  In addition, a non-contact operation detection unit 520 is provided as a function of detecting a non-contact operation of the non-contact switch. The non-contact operation detection unit 520 adjusts the output voltage of the first illuminance sensor 441 to a predetermined range and detects the change amount of the output voltage, and the output signal of the first change amount detection unit 521. A first change rate detection unit 522 that detects a change rate of the second illuminance sensor 442, a second change amount detection unit 523 that detects the change amount of the output voltage by adjusting the output voltage of the second illuminance sensor 442, and a second A second change rate detection unit 524 that detects the change rate of the output signal of the change amount detection unit 523, and an illuminance sensor drive unit 525 that drives the first illuminance sensor 441 and the second illuminance sensor 442 are provided.

  A main function of the first change amount detection unit 521 and the second change amount detection unit 523 is a sensitivity adjustment function. A toilet room using the remote controller 400 has a large variation in brightness depending on the presence / absence of a window, a usage time zone, a type of illumination, and the like, and a variation in output voltage of the illuminance sensor 440 is large. The sensitivity adjustment function of the first change amount detection unit 521 and the second change amount detection unit 523 detects the amount of change in the output voltage at the same level by converting the output voltage to a predetermined range corresponding to the brightness of the place of use. Each is provided with six sensitivity adjustment resistors.

  The sensitivity adjustment is performed by selecting the sensitivity adjustment resistor so that the output voltages of the first change amount detection unit 521 and the second change amount detection unit 523 are in the range of 1.5V to 4V.

  As shown in FIG. 13, the remote controller 400 according to the present embodiment has a function that can correspond to a brightness range from about 5 lux to 20,000 lux. The range of illuminance corresponding to each sensitivity adjustment resistor is wide in bright places and narrow in dark places. The range of the corresponding illuminance is different in this way because the change in illuminance caused by shadows caused by non-contact operations is large in a bright environment, and the change is easy to detect, whereas in a dark environment, the change due to shade is small. Therefore, it is necessary to increase the accuracy in order to perform accurate detection.

  The brightness of a general toilet room is about 50 to 500 lux, which is the range of the third sensitivity adjustment resistor and the fourth sensitivity adjustment resistor. Then, the output voltage is adjusted to a certain range (range of 1.5V to 4V) by selecting the sensitivity adjustment resistor.

  For example, when the output voltage is 4.2 V in the state where the fourth adjustment resistor which is the initial value is used, when the sensitivity adjustment resistor is switched to the third sensitivity adjustment resistor, the output voltage becomes 2.5 V.

  As described above, since the sensitivity adjustment function using the six sensitivity adjustment resistors is provided, it is possible to detect a change in illuminance in a narrow range corresponding to the brightness of the installation location of the remote controller 400, and improve the detection accuracy. be able to.

  The first change rate detection unit 522 and the second change rate detection unit 524 that detect the change rate of the output signal include an output signal amplification function (not shown). The first change amount detection unit 521 and the second change amount detection unit 523 amplify the output voltage adjusted to a predetermined range, and detect the change rate of the amplified output voltage by calculation.

  The amplification factor is set to a different amplification factor for each sensitivity adjustment resistor selected by the first change amount detector 521 and the second change amount detector 523 in sensitivity adjustment. At this stage, the threshold values of the output voltages of the first change rate detection unit 522 and the second change rate detection unit 524 used for the determination of the non-contact operation are set.

  As shown in FIG. 13, the brightness ranges to which the sensitivity adjustment resistors of the first change amount detection unit 521 and the second change amount detection unit 523 correspond are approximately logarithmically different from each other. When the change rate is calculated by directly calculating the output voltage of the detection unit 521 and the second change amount detection unit 523, even if the actual change rate of the illuminance is the same, the calculation is performed in the high and low illuminance parts. There is a difference in the rate of change output.

  In order to eliminate the error, the first change rate detection unit 522 and the second change rate detection unit 524 in the present embodiment use the output voltages from the first change amount detection unit 521 and the second change amount detection unit 523. Amplification is performed at a different amplification factor for each sensitivity adjustment resistor, and after calculating the change rate level, calculation processing is performed to calculate a change rate close to the actual change rate of illuminance and output the output voltage. .

  By detecting the rate of change, it is possible to detect the speed of change in illuminance detected by the illuminance sensor 440. For example, the change in brightness associated with the opening / closing of the door of the toilet room or the operation in which the user is moving normally. It becomes possible to determine the difference between the accompanying brightness change and the brightness change associated with the non-contact operation, thereby suppressing erroneous detection and malfunction.

  In addition, an open / close detection unit 530 that detects a detection signal of an open / close detection sensor 437 that detects open / close of the front panel 402 is provided.

  The detection function of the human body detection sensor 300 includes a human body detection detection unit 540 and a pyroelectric sensor drive unit 541 that detect a detection signal of the pyroelectric sensor 310. The human body detection detection unit 540 has a function in which the pyroelectric sensor 310 detects an infrared voltage from a human body and detects an output voltage that changes up and down. The pyroelectric sensor drive unit 541 constantly supplies 2V power for driving to the pyroelectric sensor 310.

  In addition, a battery inspection unit 550 that detects the consumption state of the battery 450 by detecting the voltage of the battery 450 is provided.

  As an output function of the remote control unit 500, a transmission drive unit 560 is provided as a function of transmitting an operation signal for operating the function of the main body 200 to the main body 200 based on detection data detected by the remote controller 400. Transmits to the infrared receiver 262 of the main body via the infrared transmitter 436.

  In addition, an indicator lamp driving unit 570 that drives an indicator lamp 430 provided in the remote controller based on detection data detected by the remote controller 400 is provided.

  As a power source for driving all the functions of the remote controller 400, a power source unit 580 that converts the power supplied from the battery 450 and supplies the power to each function is provided. The power supply unit 580 includes a 5 / 2V output unit 581 that selectively supplies 5V and 2V power, a 3V output unit 582 that supplies 3V power, and a 2V output unit 583 that supplies 2V power. .

  As shown in FIG. 12, the 3V output unit 582 supplies current to the transmission drive unit 560 that transmits an operation signal to the main body 200, and the transmission drive unit is driven only when transmission is performed.

  The 2V output unit 583 supplies a current to the pyroelectric sensor driving unit 541, and the 2V output unit 583 constantly supplies a current.

  The 5 / 2V output unit 581 supplies a current to each function other than the transmission drive unit 560 and the pyroelectric sensor drive unit 541. The 5 / 2V output unit 581 mainly supplies a 5V current when the remote controller 400 is in use and is not in use. Is for supplying a current of 2 V, and is intended to suppress the consumption of the battery 450 by power saving.

  The information processing unit 590, which is the center of the remote controller 500, incorporates a timer function using a microcomputer as a main constituent member. The detection signal transmitted from each detection unit is mainly converted into a digital signal via an A / D converter. To perform digital processing.

As a characteristic configuration of remote control unit 500 in the present embodiment, during the standby state in which human body detection sensor 300 does not detect a human body, the microcomputer itself uses a stop mode function built in the microcomputer. In addition to reducing the power consumption of the remote controller 400, the supply voltage of the 5 / 2V output unit 581 of the power supply unit 580 is stepped down to 2V to supply the corresponding function to stop driving the entire remote controller 400. It shifts to the standby mode to do.

  The standby mode is canceled by the human body detection signal of the human body detection sensor 300 or the operation signal of the operation switch 410, and the supply voltage of the 5 / 2V output unit 581 of the power supply unit 580 is boosted to 5V and supplied. It returns to the operation mode in which all 400 functions can be used.

  The remote controller 400 having the above-described configuration includes a remote control unit that determines what operation has been performed based on input information input from the operation switch 410, the setting switch 420, the first illuminance sensor 441, and the second illuminance sensor 442 as operation means. The operation signal is transmitted from the infrared transmission unit 436 to the main body 200, and the main body control unit 240 controls various functions of the sanitary washing device 100. Further, a predetermined indicator lamp 430 is turned on by the indicator lamp driving unit 570.

<5> Determination Method of Non-Contact Operation of Remote Controller FIG. 14 is a graph showing the output voltage in the determination operation of the non-contact operation, and FIG. 15 shows that the illuminance of the first illuminance sensor and the second illuminance sensor suddenly decreased simultaneously. It is a graph which shows the output voltage of a state.

  FIG. 14 shows a non-contact operation determination method based on a signal detected when the user intentionally performs a non-contact operation on the first illuminance sensor 441. The first change amount detection unit 521 is shown in FIG. The change amount of the output voltage output from the second change amount detection unit 523, the change rate of the output voltage output from the first change rate detection unit 522 and the second change rate detection unit 524, and the human body detection sensor 300 The non-contact operation is determined based on the change amount of the output voltage output from the human body detection detection unit 540 that detects the output voltage of the pyroelectric sensor 310.

  When the remote controller 400 shifts from the standby mode to the operation mode, the illuminance sensor drive unit 525, the first change amount detection unit 521, the second change amount detection unit 523, the first change rate detection unit 522, and the second The change rate detection unit 524 operates, and non-contact operation can be detected.

  The first illuminance sensor 441 and the second illuminance sensor 442 start illuminance detection, and the first change amount detection unit 521 and the second change amount detection unit 523 output output voltages. The first change amount detection unit 521 and the second change amount detection unit 523 perform sensitivity adjustment by selecting a sensitivity adjustment resistor so that the output voltage falls within the range of 1.5V to 4V.

  Along with the sensitivity adjustment of the first change amount detection unit 521 and the second change amount detection unit 523, the amplification factors and threshold values of the first change rate detection unit 522 and the second change rate detection unit 524 are set.

  Hereinafter, the determination operation for the non-contact operation will be described based mainly on the case where the first illuminance sensor 441 detects the non-contact operation.

  As illustrated in FIG. 14, the non-contact operation determination operation includes an output voltage corresponding to an illuminance change output from the first change amount detection unit 521 and the second change amount detection unit 523, and a first change rate detection unit 522. The information processing unit 590 executes the output voltage corresponding to the change rate of the illuminance change output from the second change rate detection unit 524 and the output voltage output from the human body detection detection unit 540.

When the non-contact operation is performed, the illuminance decreases due to the shadow of the hand or finger, so the output voltages of the first change amount detection unit 521 and the second change amount detection unit 523 decrease. In addition, the output voltage of the first change rate detection unit 522 and the second change rate detection unit 524 is the illuminance sensor 440 at a considerable speed when the user performs an operation operation with the intention of a non-contact operation. It rises rapidly at the initial stage of approaching and decreases as the hand or finger approaches the home position. Further, the output voltage of the human body detection / detection unit 540 varies greatly in the vertical direction as the hand approaches the pyroelectric sensor 310.

  As shown in FIG. 14, when an operation is performed with the intention of a non-contact operation of the first illuminance sensor 441, the output voltage output from the first change rate detection unit 522 corresponding to the speed of the operation operation is rapidly increased. The determination operation starts at time T1 when the output voltage rises and an output voltage equal to or higher than the threshold I is detected.

  At time T1, the output voltage output from the first change amount detection unit 521 is set as the reference voltage (first reference value) of the first change amount detection unit 521, and is set as the selected sensitivity adjustment resistor. The threshold value (first threshold value) of the first change amount detection unit 521 is set by the reference voltage (first reference value).

  Further, the output voltage output from the second change amount detection unit 523 is set as the reference voltage (second reference value) of the second change amount detection unit 523, and the selected sensitivity adjustment resistor and the set reference voltage are set. Thus, the threshold value (second threshold value) of the second change amount detection unit 523 is set.

  Also, at the time of T1, the timer built in the information processing unit 590 starts counting and the determination operation is started. The time from 0.6 second to 1.2 seconds after the start of the determination operation is a determination confirmation period for determining the determination. The time settings of 0.6 seconds and 1.2 seconds are set in the present embodiment as a time sufficient to detect a change in the input signal of the illuminance sensor in order to determine the non-contact operation of the person. Yes, but not limited to this.

  The basic determination operation is performed from the first change amount detection unit 521 or the second change amount detection unit 523 at a time T2 (0.6 seconds after in the present embodiment) when a predetermined time has elapsed since the start of the determination operation. Each of the output voltages falls below a corresponding threshold value, and if the amount of drop is a predetermined value or more, it is determined whether or not the non-contact operation is confirmed for the sensor whose voltage has fallen below the threshold value. If the amount of descent is less than the predetermined value, the other amount of descent is referred to. If the amount of change, which is the output of the other sensor, does not drop to the threshold value and there is a sufficient difference to the threshold value, it is determined that this sensor has not been operated, and it falls below the threshold value first. Confirm non-contact operation for the sensor that has been used.

  If the output voltage of either sensor does not drop below the threshold at time T2 0.6 seconds after the start of the judgment operation, then it is detected from the start of the judgment operation to T3 1.2 seconds after the start of the judgment operation. The above determination is repeated when the output voltage of the change amount is equal to or less than the threshold value for the output of at least one sensor.

  Even if the non-contact operation of one of the sensors is determined in the determination within the determination determination period, the determination signal is not transmitted from the infrared transmission unit 436 until 1.0 second has elapsed from the start of the determination.

On the other hand, if the output voltage of either sensor does not drop below the first threshold value or below the second threshold value during the determination confirmation period, the determination operation is terminated as if a non-contact operation was not performed.
In addition, within the determination confirmation period, until the fact that the non-contact operation of one sensor is confirmed is transmitted, and the non-contact operation of one sensor is not confirmed, 0.6 second to 1.2 seconds have elapsed after the start of the determination. In the meantime, if the output voltage of the change amount of both sensors falls below the corresponding threshold value, both sensors have reacted despite trying to operate one sensor. In the case of an obvious erroneous operation (for example, proximity of the body due to attachment / detachment or cleaning of clothes, etc.). For this, it is necessary to perform further arithmetic processing on the amount of change from both sensors.

  For example, for each output voltage of the first change amount detection unit 521 and the second change amount detection unit 523, from the first threshold value, the voltage drop amount from the first reference value with respect to the second threshold value, and the second reference value If the larger ratio is smaller than a predetermined value, both sensors are changed in the same manner, and both sensors are held in the same manner (hereinafter referred to as “simultaneous holding”). ). In this case, a “simultaneous holding” determination result that is equivalent to the state in which both sensors are operated is output.

  If the larger ratio is greater than or equal to a predetermined value, the difference between the amount of change from the reference value of the change amount and the threshold value is further calculated for the outputs of both sensors, and this difference is also the second value for each threshold value. The second ratio is compared, and if one of the second ratios meets a predetermined condition, it is determined that a non-contact operation has been performed on the sensor. Confirm that it is “simultaneous holding”.

  In the non-contact operation illustrated in FIG. 14, the output voltage of the first change amount detection unit 521 is equal to or lower than the first threshold value before 0.6 seconds and sufficiently drops to a predetermined value or more. On the other hand, since the output voltage of the second change amount detection unit 523 has not decreased below the threshold during the determination determination period, it is determined that the non-contact operation has not been performed. Therefore, the determination that the first illuminance sensor 441 has been operated in a non-contact manner is confirmed.

  When the user does not intend to perform a non-contact operation and the user simply approaches the remote controller 400, the change rate of the illuminance change detected by the illuminance sensor is slower than when the user holds his / her hand for the operation. Therefore, there is a high possibility that the amount of change in the output voltage from the first change amount detection unit 521 and the second change amount detection unit 523 is less than or equal to the threshold, but the first change rate detection unit 522 and the second change rate detection The output voltage output from the unit 524 is lower than the threshold value. In such a case, the determination operation for the non-contact operation is not started, and erroneous detection can be suppressed.

  If another operation switch 410 is operated during the non-contact operation determination operation, the information processing unit 590 gives priority to the operation of the operation switch 410 and stops the non-contact operation determination operation.

  Further, during the operation of the non-contact operation, when the user covers the two illuminance sensors 440 with a palm, for example, or when the user moves the hand, When the determination operation of the other non-contact operation is started, the information processing unit 590 continues both determination operations.

  While both determination operations continue, the information processing unit 590 refers to the output voltage from the human body detection detection unit 540, and when the output voltage changes more than the threshold value (J1, J2), a normal non-contact operation is performed. It is determined that both are in effect, and both determination operations are continued as valid. Since the output of the pyroelectric sensor 310 fluctuates up and down when a human body is detected, two threshold values (J1, J2) are set up and down with respect to the reference value, and when either threshold value is exceeded. It is determined that a human body has been detected.

  When one non-contact operation is finally determined, a corresponding operation signal is transmitted to the main body 200 via the infrared transmission unit 436.

  When both non-contact operations are confirmed, the information processing unit 590 transmits a third operation signal intended for the operation signals of both non-contact operations to the main body 200 via the infrared transmission unit 436.

  The main body control unit 240 that has received the third operation signal determines an operation signal to be executed based on the detection information of the seating detection sensor 250.

  In the present embodiment, the first illuminance sensor 441 is a non-contact switch for buttocks cleaning, and the second illuminance sensor 442 is a non-contact switch for opening and closing the toilet seat, so the main body control unit 240 is receiving a seating detection signal. If there is, the rinsing mechanism 230 is driven to perform butt washing, which is a function used in the seated state, and when the seating detection signal is not received, the toilet seat toilet lid rotating mechanism 215 is driven to The toilet seat opening / closing operation, which is a function used in the sitting state, is performed.

  As described above, the determination of the non-contact operation is confirmed between 0.6 seconds and 1.2 seconds after the determination operation is started. When one of the output voltages of the first change amount detection unit 521 and the second change amount detection unit 523 falls below a threshold value between 0.6 seconds and 1.2 seconds, a front notification is given as a first notification. Among the five LEDs of the intensity indicator lamp 431 that can be visually recognized from the surface of the panel 402, the central three start blinking and continue blinking until 0.45 seconds after the determination of the non-contact operation is confirmed. It is displayed that a signal is detected by at least one of the first illuminance sensor 441 and the second illuminance sensor 442 when the hand is held up trying to perform a non-contact operation. That is, notification is started before it is determined and determined that the operation is a non-contact operation, and notification is made that the position of the hand-holding is a position that can be normally operated. If the non-contact operation is not confirmed, the blinking ends.

  On the other hand, as a phenomenon that is highly likely to be erroneously detected as a non-contact operation, when the toilet room lighting is turned off, the front of the remote controller 400 is covered with a hand, or the remote controller 400 is removed from the wall and the front is lowered. The first illuminance sensor 441 and the second illuminance sensor 442 simultaneously detect an abrupt change in illuminance.

  FIG. 15 illustrates the output voltage of the first change amount detection unit 521 and the second change amount detection unit 523, the first change rate detection unit 522, and the second change rate detection unit 524 in the above-described phenomenon with a high possibility of erroneous detection. It is a graph which shows the output voltage of.

  As shown in FIG. 15, the output voltages of the first change amount detection unit 521 and the second change amount detection unit 523 rapidly decrease, and the output voltages of the first change rate detection unit 522 and the second change rate detection unit 524. Rises rapidly.

  The output voltages of the first change rate detection unit 522 and the second change rate detection unit 524 both reach the threshold value with a slight time difference t. When the time difference t is 0.01 seconds or less, the information processing unit 590 prevents erroneous detection by stopping the determination operation and not confirming the non-contact operation.

  Based on the above determination, when the determination is made that the “simultaneous holding” state in which both sensors react, the infrared transmission unit 436 transmits a simultaneous holding signal to the main body 200. This signal is determined to be unnecessary in the main body 200, or based on the detection signal of the seating sensor 250 provided in the main body 200, it is determined which functional switch corresponds to the operation switch. May be. For example, if the seating sensor 250 detects the seating, the buttocks cleaning is operated, and if the seating is not detected, the toilet seat is driven. Of course, if no signal is sent to the main body 200 in the case of simultaneous holding, battery consumption can be suppressed.

<6> Operation and Action of Remote Controller FIG. 16 shows a time chart of a non-contact operation using the second illuminance sensor 442.

  When the user enters the toilet room and the human body detection sensor 300 of the remote controller 400 in the standby mode detects a human body, the remote control controller 500 shifts the remote controller 400 from the standby mode to the operation mode. By shifting to the operation mode, a predetermined function of the remote controller 400 can be used.

  The remote controller control unit 500 that has shifted to the operation mode includes an illuminance sensor driving unit 525, a first change amount detection unit 521, a second change amount detection unit 523, a first change rate detection unit 522, and a second change rate detection unit. 524 operates, and non-contact operation can be detected.

  The first illuminance sensor 441 and the second illuminance sensor 442 start illuminance detection, and the first change amount detection unit 521 and the second change amount detection unit 523 output output voltages. The first change amount detection unit 521 and the second change amount detection unit 523 perform sensitivity adjustment by selecting a sensitivity adjustment resistor so that the output voltage falls within the range of 1.5V to 4V.

  Along with the sensitivity adjustment of the first change amount detection unit 521 and the second change amount detection unit 523, the amplification factors and threshold values of the first change rate detection unit 522 and the second change rate detection unit 524 are set.

  In addition, the remote control control unit 500 transmits a human body detection signal to the main body 200 via the infrared transmission unit 436. The human body detection signal received by the infrared receiving unit 262 of the main body 200 is transmitted 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, and the toilet seat of the toilet seat 220 Heating of the toilet seat 220 is started by starting driving of the heater 221.

  When the operation switch 410 or the setting switch 420 of the remote controller 400 is operated, the switch operation detection unit 510 of the remote control control unit 500 detects the operation content, and based on the operation signal detected by the switch operation detection unit 510, the information processing unit Reference numeral 590 transmits an operation signal to the main body 200 via the infrared transmission unit 436.

  The operation signal received by the infrared receiving unit 262 of the main body 200 is transmitted to the main body control unit 240, and the main body control unit 240 drives a function corresponding to the operation signal.

  For example, when the bidet cleaning switch 412 of the remote controller 400 is operated, the main body control unit 240 that has received the bidet cleaning operation signal drives the cleaning mechanism 230 to move the cleaning nozzle 231 from the main body 200 to a predetermined cleaning position. Bidet cleaning is started by advancing and ejecting cleaning water. When the stop switch 414 is operated, the main body control unit 240 that has received the stop signal stops the ejection of cleaning water, moves the cleaning nozzle 231 back to the storage position in the main body 200, and ends the bidet cleaning operation.

  As a specific example of the non-contact operation using the first illuminance sensor 441, when the user sitting on the toilet seat 220 brings his hand close to the first illuminance sensor 441 in order to clean the buttocks, the first change The determination operation is started when the output voltage from the rate detection unit 522 becomes equal to or higher than the threshold value, and the output voltage from the first change amount detection unit 521 is within a predetermined time (in the present embodiment, 0.6-1. When the first threshold value is reached within 2 seconds), the central three of the five LEDs of the intensity indicator lamp 431 start blinking and continue for 0.45 seconds after the determination of the non-contact operation is confirmed. Blinking, and then the LED is turned on according to the latest cleaning strength level that has been set.

The determination of the non-contact operation is confirmed by the determination immediately after the output voltage of the first change amount detection unit 521 reaches the first threshold value, and the information processing unit 590 transmits an operation signal from the infrared transmission unit 436 to the main body 200. In addition, if the output voltage of the first change amount detection unit 521 has reached the first threshold before 0.6 seconds (T2), the timing of the indicator lamp 431 at the timing (T2) when 0.6 seconds have passed. Start blinking. This is because, until 0.6 seconds (T2) elapses from the start of the judgment operation, the output of the other sensor also changes due to an event such as holding both hands on the illuminance sensor or lighting of the toilet room. This is to ensure time for confirming whether or not the above has been detected. Even if the blinking of the indicator lamp 431 starts from 0.6 second (T2), the first to the user
It works well as a notification.

  The buttocks cleaning operation signal received by the infrared receiving unit 262 of the main body 200 is transmitted to the main body control unit 240, and the main body control unit 240 that has received the buttocks cleaning operation signal drives the cleaning mechanism 230 to perform the cleaning nozzle 231. Is advanced from the inside of the main body 200 to a predetermined cleaning position, and washing of the buttocks is started by ejecting cleaning water.

  When the buttocks cleaning is completed and the user performs a non-contact operation in the same manner as described above, and the non-contact operation is confirmed, the information processing unit 590 of the remote control control unit 500 transmits an operation signal from the infrared transmission unit to the main body 200.

  The operation signal received by the infrared receiving unit 262 of the main body 200 is transmitted to the main body control unit 240, and the main body control unit 240 that has received the operation signal determines that the cleaning operation is stopped, stops the ejection of cleaning water, and the cleaning nozzle 231. Is retracted to the storage position in the main body 200 to finish the buttocks cleaning operation.

  The buttocks cleaning can be stopped by operating the stop switch 414. When the stop switch 414 is operated, the main body control unit 240 that has received the stop signal stops the ejection of the cleaning water and the cleaning nozzle 231. Is retracted to the storage position in the main body 200 to finish the buttocks cleaning operation.

  Further, regarding the operation of cleaning the buttocks, the user can also operate by directly pressing the buttocks cleaning switch 415 without depending on the non-contact operation.

  As a specific example of the non-contact operation using the second illuminance sensor 442, there is an operation in which the user raises the toilet seat 220 for boys' small use.

  FIG. 16 shows a time chart of a non-contact operation using the second illuminance sensor 442.

  The user starts a non-contact operation by bringing his hand close to the second illuminance sensor 442, and the determination operation is started from time T1 when the output voltage of the second change rate detection unit 524 reaches the threshold I or higher. The information processing unit 590 first detects the output voltage of the second change amount detection unit 523 and makes a determination by 0.6 seconds after the determination operation starts. As shown in FIG. 16, when the output voltage of the change amount has not decreased below the second threshold value by 0.6 seconds (T2), the determination operation is continued and the determination is repeated at intervals of 0.1 seconds.

  At the time when the output voltage of the second change amount detection unit 523 reaches the second threshold value, three of the five LEDs of the cleaning intensity indicator lamp 431 start blinking display as a first notification, and contactless After the operation determination is confirmed, the blinking display is continued for 0.45 seconds, and then the light is turned off.

  When the output voltage of the second change amount detection unit 523 reaches the second threshold value, the voltage drop amount from the second threshold value is equal to or greater than a predetermined value, and the output value of the first change amount detection unit 521 is the first value. Since the threshold value has not been reached, the determination of the non-contact operation for the second illuminance sensor 442 is confirmed, and the information processing unit 590 transmits an operation signal from the infrared transmission unit 436 to the main body 200.

  The main body control unit 240 that has received the operation signal drives the buzzer 263 as a second notification 0.2 seconds later, and generates a notification sound composed of three tones of low to high to express the standing operation of the toilet seat 220. Ring for 0.8 seconds. After the buzzer 263 has finished ringing, the toilet seat toilet lid rotating mechanism 215 is driven to erect the toilet seat 220. When the toilet seat comes to a position rotated about 45 degrees upward from the horizontal axis, the temperature increase of the toilet seat is stopped.

  Further, when the toilet seat in the standing state is inverted, the toilet seat 220 can be inverted by a non-contact operation as described above by bringing the hand close to the second illuminance sensor 442. At this time, the buzzer 263, which is the second notification, starts sounding a notification sound composed of three tones of high to low to express the inversion of the toilet seat before the toilet seat 220 is driven. The ringing ends after 8 seconds.

  The toilet seat opening / closing operation can be performed by the user directly pressing the toilet seat opening / closing switch 416, regardless of the non-contact operation.

  After all the operations of the remote controller 400 are finished, the user leaves the toilet room, the human body detection sensor 300 finishes detecting the human body, and after a predetermined time has passed (in this embodiment, about 60 seconds), the remote controller The information processing unit 590 of the control unit 500 shifts the remote controller 400 to the standby mode mode and maintains the power saving state.

  When the main body 200 stops receiving the human body detection signal from the remote controller 400, the main body control unit 240 drives the toilet seat toilet lid rotation mechanism 215 after a predetermined time has elapsed (60 seconds in the present embodiment). Thus, the toilet lid 210 and the toilet seat 220 are closed, the energization to the toilet seat heater 221 is stopped, and then the control is performed so that the standby temperature is maintained when the temperature is lowered to the standby temperature.

  As described above, the remote controller 400 of the sanitary washing device according to the present embodiment includes the non-contact operation by non-contact and the operation switch 410 that is directly operated by hand, and the same operation can be performed by either operation method. Thus, a user who is familiar with the non-contact operation method can perform the operation hygienically by the non-contact operation. Further, since a user who is not familiar with the non-contact operation method can reliably perform the switch operation using the operation switch 410, it is possible to provide a user-friendly sanitary washing apparatus for all users. it can.

  In addition, the sanitary washing device according to the present embodiment determines the non-contact operation as an output voltage corresponding to the illuminance change output from the first change amount detection unit 521 and the second change amount detection unit 523, and the first change rate. The output voltage corresponding to the change rate of the illuminance change output from the detection unit 522 and the second change rate detection unit 524 and the output voltage output from the human body detection detection unit 540 are used at least two types of output voltages. It is to be implemented, and can prevent erroneous detection and erroneous operation, and can improve safety and reliability.

  In particular, the proximity distance of the user's body part to the illuminance sensor 440 can be determined based on the output voltage corresponding to the illuminance change amount output from the first change amount detection unit 521 and the second change amount detection unit 523. The speed of the user's operation can be determined from the output voltage corresponding to the change rate of the illuminance change output from the first change rate detection unit 522 and the second change rate detection unit 524. Improve safety and reliability by accurately determining contact operations and avoiding false detections of shadows of moving objects and changes in brightness due to lighting, etc. can do.

  In particular, when the front surface of the remote controller 400 is covered by detecting the time difference when the output voltages of the first change rate detection unit 522 and the second change rate detection unit 524 reach the threshold value and the illumination is turned off. It is possible to suppress erroneous detection of an abrupt change in illuminance that is not intended for non-contact operation due to, for example, the case of being performed.

In addition, by using a plurality of illuminance sensors and using the time information of the output change, it is possible to more accurately detect whether it is a non-contact operation or not (an erroneous operation or a noise event such as lighting SW OFF). be able to.

  Moreover, the detection signal detected from the same illuminance sensor 440 is processed by the non-contact operation detection unit 520 to convert it into data having different properties, thereby improving the accuracy of the determination, which is simple and inexpensive. According to the configuration, a highly accurate determination can be performed.

  In the sanitary washing device according to the present embodiment, the seating detection sensor 250 is provided in the main body 200, and when both non-contact operations are confirmed, the information processing unit 590 is intended to be an operation signal for both electric mechanisms. The main body control unit 240 transmits the operation signal to the main body 200 via the infrared transmission unit 436 and receives the third operation signal, so that the operation signal to be executed can be determined based on the detection information of the seating detection sensor 250. As a result, erroneous operation can be prevented and safety and reliability can be improved. In addition, since the degree of freedom of non-contact operation can be expanded, usability can be improved.

  In the present embodiment, the human body detection sensor 300 is provided integrally with the remote controller 400, and the microcomputer that is the main component of the remote control control unit 500 during the standby state in which the human body detection sensor 300 does not detect the human body. In addition to suppressing the power consumption of the microcomputer itself by using the built-in stop mode function, the voltage of the power supply unit is lowered from 5 V to 2 V, and the functions of each function other than the pyroelectric sensor driving unit 541 that performs human body detection Stop driving.

  This makes it possible to shift to a standby mode for reducing the power consumption of the entire remote controller 400, to suppress the consumption of the battery as the power source of the remote controller 400, and to extend the battery life. 400 can be provided.

  In the present embodiment, an open / close detection sensor 437 that detects the open / closed state of the front panel 402 is provided, and an illuminance sensor that drives the first illuminance sensor 441 and the second illuminance sensor 442 while the front panel 402 is open. The drive unit 525 is stopped, and the first illuminance sensor 441 and the second illuminance sensor 442 are configured not to detect illuminance changes. As a result, it is possible to prevent the first illuminance sensor 441 and the second illuminance sensor 442 from erroneously detecting the shade generated during the opening / closing operation of the front panel 402 as a non-contact operation, thereby improving safety and reliability. be able to.

  In addition, the sanitary washing device according to the present embodiment includes an indicator lamp 430 and a buzzer 263, the position of the hand-holding of the non-contact operation is within the detection range, and the indication on the indicator lamp 430 that notifies that the sensor has reacted. When the operation is confirmed, the buzzer 263 can notify the user with a sound expressing the operation before the operation is performed, so that the user can recognize the operation state, and the usability can be improved. .

  In particular, when the toilet seat 220 is raised and lowered in a non-contact operation, before the toilet seat raising / lowering operation is started, the indicator lamp 430 is first displayed by blinking before the determination of the non-contact operation is confirmed. After the notification is started and the determination of the non-contact operation is confirmed, the second notification by the scale by the buzzer 263 is performed to indicate that the position of the hand hold is correct at an early stage before the non-contact operation is confirmed. When the non-contact operation is confirmed by the notification at 430, the user can recognize the notification as an operation advance notice at an early stage before the toilet seat's raising / lowering operation is started. Can be prevented and the safety can be improved, and the user can recognize the turning direction of the toilet seat 220 by notifying by the musical scale, thereby improving the usability. It is possible.

  In particular, the first notification is the remote control of the operation destination for the user's non-contact operation (at this time, most users are focusing on their operation and checking whether their hand is held in the correct position. , Confirming the positional relationship between the remote control sensor and one's hand), the indicator light 430 provided in the vicinity of the first illuminance sensor 441 or the second illuminance sensor 442 on the remote control surface is notified, The second notification is made possible by notifying the user with the buzzer 263 having a strong notification power on the main body side where the operation is performed, thereby enabling the user to recognize the notification effectively and improving the operability by the notification. There is no surprise and safety and usability can be improved.

  In addition, in the present embodiment, the notification by the indicator lamp 430 starts blinking before the non-contact operation is confirmed. When an operation error occurs, blinking may be started due to a sensor reaction due to a natural phenomenon. When the “simultaneous holding” determination is confirmed after the blinking starts or when it is confirmed that the non-contact operation is not performed at the timing of T3 in FIG. 14, the blinking display is ended, so that there is no trouble in use. .

  Further, since the user obtains different perceptions by the notification by the light from the indicator lamp 430 and the sound from the buzzer 263, the user can be surely recognized.

  In the present embodiment, the non-contact operation is adopted only for the buttocks washing and the toilet seat opening / closing operation, but is not limited to this, and other electric mechanisms such as bidet washing, drying, and toilet lid opening / closing operation are used. It can also be adopted.

  In the present embodiment, the non-contact operation is performed using the two illuminance sensors 440. However, the present invention is not limited to this, and a configuration using one illuminance sensor or three or more illuminance sensors. But you can.

  Further, in the present embodiment, the first illuminance sensor 441 is disposed for the buttocks washing operation, and the second illuminance sensor 442 is disposed for opening and closing the toilet seat. However, only one illuminance sensor is provided. Based on the seating detection information of the seating detection sensor 250, the operation information of the individual illuminance sensors is determined as butt washing if the seating detection signal is being received, and is determined to be the toilet seat opening / closing operation if the seating detection signal is not received. However, it may be configured to perform the operation.

  In this embodiment, an illuminance sensor is used as a proximity sensor for non-contact operation. However, the present invention is not limited to this, and a light detection sensor including a light emitting element and a light receiving element or a transmission antenna and a reception antenna are provided. Other sensors that can detect a nearby human body such as a microwave sensor may be used.

  In the present embodiment, the human body detection sensor 300 is provided integrally with the remote controller 400. However, the present invention is not limited to this, and another second remote having only the function of the human body detection sensor 300 is provided. It is good also as a structure which can add and install a controller.

  In this case, the second remote controller has a function of transmitting human body detection information only to the main body 200, and when the second remote controller is installed, the human body detection information of the remote controller 400 is on standby in the remote controller 400. It is used for switching between modes and operation modes, determining non-contact operations, and the like, and transmission of human body detection information to the main body 200 can be stopped by special operations of a plurality of setting switches 420.

The sanitary washing device according to the present embodiment has a function of starting energizing the toilet seat heater 221 by detecting a human body and instantaneously raising the temperature of the toilet seat, and promptly prompts a user who has entered the toilet room. Depending on the location of the remote controller 400, it may be detected when the user stands in front of the toilet bowl or just before sitting on the toilet seat, so by adding a second remote controller, It becomes possible to eliminate the above problems.

  In the present embodiment, the determination of the non-contact operation is performed by the output of the first change amount detection unit 521 when only one illuminance sensor 440 (for example, the first illuminance sensor 441) is operated in a non-contact manner. When the two illuminance sensors 440 are simultaneously operated in a non-contact manner based on the voltage and the output voltage of the first change rate detection unit 522, the output voltage of the human body detection detection unit 540 and both of the change amount detection units Judgment is made based on the output voltage and the output voltage of both the change rate detection units, but the present invention is not limited to this. If the output voltage data of the change amount detection unit is included, other combinations may be used. Good. Moreover, you may always determine using the output voltage of a variation | change_quantity detection part, the output voltage of a change rate detection part, and the output voltage of a human body detection detection part.

  Further, in the present embodiment, the first notification associated with the non-contact operation of the toilet seat 220 is performed by the intensity indicator lamp 431 disposed in the remote controller 400, and the second notification is performed by the buzzer 263 disposed in the main body 200. However, the present invention is not limited to this, and the first notification may be performed using the indicator lamp 261c arranged in the main body 200.

  Alternatively, a separate buzzer may be arranged in the remote controller 400, a buzzer driving unit may be added to the remote controller control unit 500, and the second notification may be performed using the buzzer arranged in the remote controller 400.

  Moreover, in this Embodiment, although the 1st alerting | reporting accompanying non-contact operation of the toilet seat 220 was implemented with the indicator lamp, and the 2nd alerting | reporting was implemented with the buzzer, it is not restricted to this, The 1st alerting | reporting The second notification may be performed with an indicator light or a buzzer. Further, the first notification may be performed with a buzzer and the second notification may be performed with an indicator lamp.

  As described above, the sanitary washing device according to the present invention can suppress erroneous detection of a non-contact operation, and thus can be applied to other consumer devices that have a non-contact operation.

DESCRIPTION OF SYMBOLS 100 Sanitary washing apparatus 110 Toilet bowl 200 Main body 215 Toilet seat toilet lid rotation mechanism (electric mechanism)
230 Cleaning mechanism (electric mechanism)
400 Remote controller 436 Infrared transmitter (transmitter)
440 Illuminance sensor (proximity sensor, non-contact switch)
441 First illuminance sensor (proximity sensor, non-contact switch)
442 Second illuminance sensor (proximity sensor, non-contact switch)
500 Remote Control Unit 521 First Change Amount Detection Unit 522 First Change Rate Detection Unit 523 Second Change Amount Detection Unit 524 Second Change Rate Detection Unit 590 Information Processing Unit

Claims (3)

A main body installed on the toilet and containing a plurality of electric mechanisms;
A remote controller that operates the electric mechanism separately from the main body,
The remote controller includes a plurality of non-contact switches that detect proximity of a user's body part using an illuminance sensor, a remote control controller that detects detection information of the non-contact switch, and a transmission unit that transmits an operation signal to the main body. And comprising
The remote control unit may determine the a change amount detector for detecting a change in the output voltage of the non-contact switch, a change rate detector for detecting a change rate of the output voltage of the variation detecting unit, a non-contact operation An information processing unit and a timer,
The sanitary washing device, wherein the information processing unit determines a non-contact operation based on a change over time measured by the timer with respect to a change amount and a change rate of an output voltage of the plurality of non-contact switches. The information processing unit is configured to start the determination operation of the non-contact operation when the output voltage of the change rate detection unit reaches a threshold value,
The information processing unit does not start the determination operation of the non-contact operation when the time difference between the threshold voltage arrival times of the output voltages of the change rate detection unit corresponding to the non-contact switch is equal to or less than a predetermined time. The sanitary washing device according to claim 1. 3. The information processing unit according to claim 1, wherein the information processing unit performs determination processing in parallel for sensor outputs corresponding to the plurality of non-contact switches, and determines that the plurality of non-contact switches are operated simultaneously. Sanitary washing device.