JP5733596B2 - Toilet seat device - Google Patents

Description

  The present invention relates to a toilet seat device, for example, a heating toilet seat device for heating a toilet seat.

  The heating toilet seat device generates heat by constantly applying a voltage to a heating wire built in the toilet seat, and always warms the toilet seat to a desired temperature set by the heat. Accordingly, the heating toilet seat device prevents the user from feeling uncomfortable due to the coldness of the toilet seat when sitting on the toilet seat, and the user can comfortably sit on the toilet seat.

  In such a heated toilet seat device, it is desired to control the toilet seat temperature so that the power consumption when the toilet is not used is reduced as much as possible, while the toilet seat can be seated on a comfortable seat when the toilet is used. Therefore, in the past, when a human body entering a toilet room was detected using a pyroelectric infrared sensor while the standby temperature of the toilet seat was kept low in order to reduce power consumption when the toilet was not used, there was a human body detection. There is known an immediately warming type heating toilet seat device that raises the temperature of a toilet seat from a standby temperature to a target seating temperature (Patent Document 1). Such an immediately warming type heated toilet seat device is a device that rapidly heats the toilet seat when the user uses the toilet bowl, and can reduce the standby temperature when the toilet bowl is not used, which is effective in reducing power consumption. is there.

Japanese Patent No. 40686648 JP 2009-165684 A

  However, the conventional immediate warm toilet seat device detects the human body after entering the toilet room and raises the temperature from the standby temperature to the target seating temperature. Normally, the time from entering the room to sitting is at most about 6 seconds, and when the user is lightly dressed, the time from entering the toilet room to sitting on the toilet seat is about 4 seconds. In other words, there is a limit to the time for raising the temperature from the standby temperature to the seating temperature. Therefore, there is a possibility that the conventional immediate warm type toilet seat device cannot raise the toilet seat to a comfortable temperature at the time of sitting. Alternatively, the standby temperature is set to a high value at the expense of energy saving in order to reliably raise the toilet seat to a comfortable temperature when the user is seated even for a short time.

  Further, in order to reduce the power consumption while raising the toilet seat to a comfortable temperature at the time of sitting, it is conceivable to increase the heating capability of the heater and heat the toilet seat in a short time. However, increasing the heating capability of the heater causes a safety problem. Furthermore, when the heater has a high temperature raising capability, there arises a problem that wasteful power consumption increases when the temperature of the toilet seat is raised even when the temperature of the toilet seat is not needed, such as during urination.

  Therefore, in order to reduce power consumption while maintaining the heating capability of the heater low, it is desirable to lengthen the heating time so that the temperature can be surely raised to a comfortable temperature even from a low standby temperature. In order to lengthen the temperature rising time in this way, a method using an electric light switch is conceivable in order to start temperature rising control by warming immediately before the user enters the toilet room (Patent Document 2). However, the toilet light switch is usually installed in the vicinity of the toilet, and the temperature raising time cannot be made too long.

  In addition, it is conceivable to increase the temperature raising time by installing the infrared sensor at a position far from the toilet room. However, when trying to determine whether a user has entered with a highly directional infrared sensor, a plurality of infrared sensors are installed in a corridor or the like outside the toilet room, and each infrared sensor is linked to the heating control of the toilet seat device. There is a need. It is not practical to use such a method only for immediate warming control of the toilet seat.

  Furthermore, even if the distance from the toilet room to the user can be grasped by installing the infrared sensor, the time until the user enters the toilet room from that position is the path form of the house from that position to the toilet room. It depends on the walking speed of the user. That is, the time from when the sensor detects the user until entering the toilet room is not simply determined from the position information. For this reason, in a conventional toilet seat device that simply starts warming based on position information, the toilet seat may not be heated to a comfortable temperature at the time of sitting.

  Thus, in the conventional immediate warm type toilet seat device, the temperature of the toilet seat is raised to a comfortable temperature when the user is seated (first purpose), and the standby temperature of the toilet seat is reduced as much as possible. It has been difficult to achieve both power reduction (second purpose).

  Moreover, when detecting a user far away from the toilet room, the temperature raising time can be lengthened, but the user does not necessarily enter the toilet room. Even if a user who is far away from the toilet room is detected and the temperature of the toilet seat can be started from that point in time, if the user does not enter the toilet room, the temperature increasing operation is useless. Become. Hereinafter, detecting the user outside the toilet room and performing the temperature raising operation although the user does not actually enter the toilet room is referred to as non-room heating. If non-room heating occurs frequently, the toilet seat device repeatedly performs a wasteful temperature raising operation. Therefore, even if the standby temperature is set low, the effect of reducing the power consumption of the toilet seat device is diminished. .

  The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to maintain the standby temperature as low as possible and reduce the power consumption of the toilet seat while reducing the temperature of the toilet seat when the user is seated. It is an object of the present invention to provide a toilet seat device that can surely raise the temperature to a comfortable temperature and reduce wasteful power consumption consumed by non-room heating.

A toilet seat device according to an embodiment of the present invention is a toilet seat device provided with a toilet seat portion installed in a toilet room, a heating unit that heats a heated body by energization, and an outside of the toilet room by radio waves A sensor unit that detects the user's human body and detects that the user has entered the toilet room, a control unit that controls the heating unit and the sensor unit, and a timer having a clock function , The control unit starts energizing the heating unit when the sensor unit detects a human body, and the door of the toilet room is within a predetermined time after the sensor unit starts energizing the heating unit. If no movement is detected, it is determined that the user does not enter the toilet room, and energization to the heating unit is suppressed or stopped. The toilet seat device according to the present invention uses a radio wave to perform a temperature raising operation before the user enters the room, and thus detects the time for raising the temperature from the standby temperature that is not in use to the target temperature that is in the sitting state that is in use. Then, the approach time until the user enters the toilet room can be used to make it longer than before. As a result, the toilet seat device can reliably raise the temperature of the heated object at the time of the user's seating to the target temperature while maintaining the standby temperature as low as possible and reducing the power consumption of the heating unit. On the other hand, even if the user is detected before entering the room, the user does not actually enter the room (non-room entry). When such non-entry determination is established, the toilet seat device according to the present invention suppresses (or stops) heating of the heated object by suppressing (or stopping) energization of the heating unit. Thereby, useless temperature rising operation can be suppressed (or stopped) on the way, and useless power consumption can be reduced.

The radio wave sensor can detect the movement of the door of the toilet room opening and closing. When the radio wave sensor detects the opening / closing of the door, it can be determined whether or not the user has entered the toilet room. In other words, the toilet seat device determines non-entry when there is no door opening / closing within a predetermined time. Thereby, the toilet seat apparatus can reduce useless power consumption by determining the non-entry of the user at an early stage and suppressing (or stopping) useless temperature rising operation in the middle.

The sensor unit detects that the user is away from the toilet room by radio waves, and the control unit detects the separation of the user before the sensor unit detects the movement of the door of the toilet room. It may be determined that the user does not enter the toilet room. As described above, the radio wave sensor detects the separation of the user, so that the non-entry determination can be determined at an early stage when the user starts to leave the toilet seat device. Thereby, the toilet seat apparatus can reduce useless power consumption by determining the non-entry of the user at an early stage and suppressing (or stopping) useless temperature rising operation in the middle.

A toilet seat device according to an embodiment of the present invention is a toilet seat device provided with a toilet seat portion installed in a toilet room, a heating unit that heats a heated body by energization, and an outside of the toilet room by radio waves A sensor unit that detects the user's human body and detects that the user has entered the toilet room, and a control unit that controls the heating unit and the sensor unit, wherein the control unit includes the sensor unit. When the user detects the user's human body, energization of the heating unit is started, and the user during the approach time from when the sensor unit detects the user's human body to when the user enters the toilet room is detected. , When it is determined that the toilet seat device is not to be used, the energization to the heating unit is suppressed or stopped, and the control unit performs the first time from the start of heating of the heated object for a predetermined time. Ascension The heated body is heated at a rate, and after the predetermined time, the heated body is heated at a second heating rate, and the first heating rate is higher than the second heating rate. Low . If the determination of non-entry or non-use is established, the temperature raising operation until then is wasted. However, useless power consumption can be reduced by heating the object to be heated at a low temperature increase rate for a predetermined time from the start of temperature increase. On the other hand, in order to raise the temperature of the heated object to the target temperature when the user is seated (first purpose), the toilet seat device is heated at a high temperature increase rate after a predetermined time has elapsed since the start of temperature raising. Warm up the body. By changing the temperature increase rate of the heater in this way, the toilet seat device achieves the first object and wasteful power consumption when the non-entry or non-use determination is established during the temperature increase operation. Can be further reduced.

The predetermined time is equal to or longer than an approach time from when the sensor unit detects the user's human body to when the user enters the toilet room, and from when the sensor unit detects the user's human body. May be a time equal to or shorter than the total time until the user sits on the toilet seat. In order to determine the establishment of the non-entry determination as time elapses, the toilet seat device needs to wait for at least the approach time set based on the actually measured value. In addition, even when the user is estimated to be seated, if the user has not yet entered the room, there is a high possibility that the user will not enter the room. That is, if the user does not enter the room even when the total time has elapsed, the toilet seat device may determine that the non-room entry determination is satisfied. Therefore, the predetermined time may be any time point from the approach time to the total time. When the predetermined time has elapsed, if the user has not yet entered the room, the control unit assumes that the non-room entry determination is established. Therefore, the toilet seat device can more reliably determine the non-entrance and reduce wasteful power consumption.
In addition, the toilet seat device has the first object by setting the temperature increase rate of the heater low from the start of the temperature increase until the predetermined time elapses and increasing the temperature increase rate of the heater after the predetermined time elapses. While achieving this, when the non-entry determination is established, wasteful power consumption can be further reduced.

  The toilet seat device according to the present invention can reliably raise the temperature of the heated body at the time of sitting of the user to a comfortable target temperature while maintaining the standby temperature as low as possible and reducing the power consumption of the heating unit. In addition, useless power consumption can be reduced when non-room entry is determined.

The figure which shows detection area DR1, DR2 of the toilet apparatus 100 according to 1st Embodiment which concerns on this invention, the toilet room 105, and the sensor part 150. FIG. The block diagram which shows the structure of the toilet seat apparatus 110 by 1st Embodiment. The figure which shows the voltage waveform of the electromagnetic wave detected by the sensor part 150, or infrared rays. The figure which shows an example of the control data table of a reference | standard table. The graph which shows the relationship between the total time Ttotal and the temperature of the toilet seat part 140. FIG. The conceptual diagram of the standard toilet room 200 used for preparation of a reference | standard table. The figure which shows the control temperature table used in order to set standby temperature TEMPstb of an adaptation table automatically, and the target temperature table used in order to select target temperature TEMPtrg. The flowchart which shows the procedure which creates an adaptation table automatically. The figure which shows an adaptation table. The flowchart which shows the procedure of the update of an adaptation table. The flowchart which shows operation | movement of the toilet seat apparatus 110 which sets a some adaptation table. The conceptual diagram which shows the toilet apparatus 100 according to 2nd Embodiment which concerns on this invention, the structure of the toilet booth 105, and a user's approach direction, and environmental information (I)-(V) of the toilet seat apparatus 110, and a threshold value A threshold selection table showing the correspondence. The approach time selection table which shows the correspondence of environmental information (I)-(V) of the toilet seat apparatus 110 according to 3rd Embodiment which concerns on this invention, a threshold value, and an estimated value. The flowchart which shows the setting procedure of the adaptation table according to 3rd Embodiment. The flowchart which shows the procedure of the update of the adaptation table according to 4th Embodiment which concerns on this invention. The figure which shows the threshold value change table used for the change of an adaptation table in 4th Embodiment. The flowchart which shows the immediate warming control of the toilet seat apparatus 110 by 4th Embodiment. The flowchart which shows the subroutine of temperature rising determination. The table | surface which shows the human body detection frequency in the past unit time, the non-entry determination frequency, the human body detection frequency, and the non-entrance determination frequency. The table | surface which shows the human body detection frequency in the time slot | zone for every hour, the non-entry determination frequency, the human body detection frequency, and the non-entrance determination frequency. The flowchart which shows the subroutine of non-entry determination. The flowchart which shows the subroutine of non-use determination. The flowchart which shows the subroutine of heat retention control. The flowchart which shows the subroutine of the standby control of the toilet seat apparatus 110. FIG. The flowchart which shows the modification of the immediate warming control shown in FIG. The graph which shows the temperature increase rate of the heater of the modification 2. The flowchart which shows the modification of the immediate warming control shown in FIG.

  Embodiments according to the present invention will be described below with reference to the drawings. This embodiment does not limit the present invention.

(First embodiment)
FIG. 1A and FIG. 1B are diagrams showing detection areas DR1 and DR2 of the toilet device 100, the toilet room 105, and the sensor unit 150 according to the first embodiment of the present invention. The toilet apparatus 100 is installed in a toilet room 105 and includes a toilet seat apparatus 110 and a toilet bowl 120. The toilet seat device 110 is a heating toilet seat device with a hot water cleaning function including a remote operation device (remote controller) 130, a toilet seat portion 140, a sensor portion 150, a cleaning portion 200, and a control portion 210. The toilet seat part 140 has a built-in heater as a heating part. The toilet seat 140 is heated by supplying current to the heater. The sensor unit 150 includes a radio wave sensor 160, a pyroelectric sensor 170, and a seating sensor 180. The toilet room 105 is a space surrounded by a wall 106 and a door 107, and the user enters the toilet room 105 through the door 107.

  The radio wave sensor 160 is, for example, a radio wave sensor that uses a microwave frequency band. The microwave sensor emits a radio wave beam toward a predetermined detection area, and detects an object such as a human body that has entered the detection area. Further, since the microwave sensor uses the Doppler effect (standing wave), it can detect the movement (speed) of the object. Furthermore, the microwaves pass through materials having a relatively low relative dielectric constant such as wood, resin, and ceramics. Therefore, the microwave sensor can detect a human body outside the toilet room 105 and can detect a moving state (speed) of the human body.

  Microwave is one of the classifications based on the frequency of radio waves. Generally, it refers to a radio wave (electromagnetic wave) having a wavelength of 100 micrometers to 1 meter and a frequency of 300 megahertz to 3 terahertz. Radio waves in this range include decimeter waves (UHF), centimeter waves (SHF), millimeter waves (EHF), and submillimeter waves. The radio wave sensor 160 only needs to be able to detect the user's human body outside the toilet room 105, and the available frequency band is not limited to the microwave band.

  The pyroelectric sensor 170 is, for example, a pyroelectric infrared sensor, and detects that the user has entered the toilet room 105. The pyroelectric infrared sensor detects the difference between the temperature of the surrounding environment and the temperature of the object to be detected, and determines whether an object exists in the space. In this embodiment, the pyroelectric sensor 170 is installed in the toilet seat device 110 in order to detect the human body of the user who has entered the toilet room 105. However, the present invention is not limited to the pyroelectric infrared sensor.

  The seating sensor 180 is, for example, a reflective infrared sensor, and detects that a user is seated on the toilet seat 140 when infrared light reflected from the human body is detected. The seating sensor 180 is not limited to the reflective infrared sensor as long as it can detect that the user is seated on the toilet seat 140.

  The radio wave sensor 160 and the pyroelectric sensor 170 may be attached to the toilet seat device 110 and / or the toilet 120 or the remote control device 130, or separately from the toilet seat device 110 and the remote control device 130, the wall surface and ceiling in the toilet room 105. Or you may attach to a floor surface.

  The first detection region DR1 indicates a range in which the radio wave sensor 160 can detect a human body, and extends outside the toilet room 105. The second detection area indicates a range in which the pyroelectric sensor 170 can detect a human body, and is limited to the inside of the toilet room 105.

  FIG. 2 is a block diagram illustrating a configuration of the toilet seat device 110 according to the first embodiment. The toilet seat device 110 includes a remote control device 130, a sensor unit 150, a toilet seat unit 140, a cleaning unit 200, and a control unit 210.

  The remote operation device 130 includes a function setting unit 132, a function operation unit 134, and a display unit 136. The function setting unit 132 is a means for the user to input / select various setting items such as the temperature setting of the toilet seat 140 and the water temperature setting of the cleaning device 200. The function operation unit 134 is a means for the user to operate the toilet seat device 110 and the cleaning device 200 based on the setting items set by the function setting unit 132. The display unit 136 is a unit that displays items input / selected by the user using the function setting unit 132 or the function operation unit 134. The function setting unit 132 and the function operation unit 134 include, for example, a button and a changeover switch, and the user sets and operates the toilet seat apparatus 110 by pressing the button or switching the changeover switch. The display unit 136 may be a liquid crystal display device, for example.

  As described above, the sensor unit 150 includes the radio wave sensor 160, the pyroelectric sensor 170, and the seating sensor 180. The radio wave sensor 160 includes a transmission antenna 162, an oscillation circuit 164, a reception antenna 166, and a detection circuit 168. In the present embodiment, the oscillation circuit 164 generates a radio wave (microwave) having a predetermined frequency and transmits the radio wave from the transmission antenna 162. The reception antenna 166 receives the reflected wave of the radio wave transmitted from the transmission antenna 162. The detection circuit 168 extracts a frequency difference (detection signal) from the reflected wave received by the reception antenna 166, and sends the detection signal to the control unit 210. If the oscillation circuit 164 includes a frequency variable circuit, not only the moving speed of the human body but also the distance from the radio wave sensor 160 to the human body can be recognized from the phase state of the reflected wave. If a plurality of detection circuits 168 are provided, it is possible to identify whether the human body is approaching or moving away from the radio wave sensor 160 from the phase difference between the plurality of detection signals.

  When the human body detection sensor (for example, infrared sensor, pyroelectric sensor, radio wave sensor, etc.) is separately installed in the toilet room 105 and outside the toilet room 105 to determine the approach time T1, the human body installed in the toilet room 105 It is necessary to establish communication and synchronization between the detection sensor and the human body detection sensor installed outside the toilet room 105, and the control becomes complicated. The detection accuracy varies depending on the position of the human body detection sensor installed outside the toilet room 105 according to the user's preference and living environment, and the approach time T1 is affected. The toilet seat device 110 and the remote control device 130 installed in the toilet room 105 are equipped with a radio wave sensor 160 that detects the moving state of the human body outside the toilet room 105, so that the user enters the detection area outside the toilet room 105. Since the movement information from when the door is opened until the user enters the toilet room 105 can be continuously detected, it is not necessary to establish communication or synchronization, and the control is simplified. Moreover, the optimal approach time T1 can be determined according to the housing environment where the toilet room 105 is installed.

  The pyroelectric sensor 170 includes a lens that sets a detection region and a light receiving element that receives infrared rays emitted from the human body. The seating sensor 180 emits infrared rays and infrared reflected waves transmitted from the light emitting elements. A light receiving element for receiving is provided, and the result received by the light receiving element is sent to the control unit 210.

  The toilet seat unit 140 includes a heater 142 as a heating unit and a temperature detection unit (thermistor) 144. The heater 142 heats the toilet seat 140 under the control of the controller 210. The temperature detection unit 144 detects the temperature of the toilet seat unit 140 and feeds back the temperature information to the control unit 210.

  The cleaning unit 200 includes a heater 202, a temperature detection unit (thermistor) 204, and a nozzle driving unit 206. The heater 202 heats the cleaning water stored in the tank in the cleaning unit 200 under the control of the control unit 210. The temperature detector 204 detects the temperature of the cleaning water and feeds back the temperature information to the controller 210. The nozzle driving unit 206 is configured to drive the nozzle and discharge cleaning water.

  The control unit 210 includes an arithmetic processing unit (CPU) 212, a storage unit 214, a timer 216, and a counter 218, and controls the remote operation device 130, the sensor unit 150, the toilet seat unit 140, and the washing unit 200. It is configured.

  FIG. 3 is a diagram showing a radio wave or infrared voltage waveform detected by the sensor unit 150. A voltage waveform detected by the radio wave sensor 160 is indicated by W1, a voltage waveform detected by the pyroelectric sensor 170 is indicated by W2, and a voltage waveform detected by the seating sensor 180 is indicated by W3. These voltage waveforms W <b> 1 to W <b> 3 are waveforms in a desired frequency band obtained by filtering the received wave received by the sensor unit 150 using a frequency band filter included in the control unit 210. The controller 210 detects that the radio wave sensor 160 has detected the user's human body (human body detection), and that the pyroelectric sensor 170 has detected the user's room entry (room entry detection) due to changes in the amplitude voltage of the voltage waveforms W1 to W3. In addition, it can be determined that the seating sensor 180 has detected the user's seating (sitting detection). The controller 210 starts heating the toilet seat 140 when the measured value of the reflected wave of the radio wave exceeds the threshold and the radio wave sensor 160 detects a human body.

  When the user approaches the toilet room 105 and enters the first detection region DR1 of the radio wave sensor 160, first, the voltage amplitude of the microwave detected by the radio wave sensor 160 increases. At this time, when the voltage amplitude of the microwave exceeds a predetermined threshold value ± Vth (for example, upper limit threshold voltage + Vth and / or lower limit threshold voltage −Vth), control unit 210 determines that radio wave sensor 160 has detected a human body. To do. The threshold value is a parameter used for detecting the human body of the user, and can be expressed by, for example, an upper limit threshold voltage and a lower limit threshold voltage provided with reference to an average level of noise, or a predetermined S / N ratio. Further, when the user enters the first detection region DR1, not only the voltage value but also the frequency of the microwave changes. Therefore, the radio wave sensor 160 can detect the moving speed of the human body by using the Doppler effect and detecting the frequency difference between the microwave transmission wave and the reception wave. Therefore, the threshold value may be expressed by a deceleration rate of the moving speed of the user, or may be expressed by a frequency difference between microwaves transmitted and received.

  The threshold voltage ± Vth in FIG. 3 is determined by a predetermined S / N ratio (Signal-to-Noise ratio). For example, if a predetermined S / N ratio for determining a threshold (hereinafter also referred to as a determination S / N ratio) is 1.5, the threshold voltage is 1.5 times the voltage amplitude of noise (dark noise). It becomes an upper limit and a lower limit of a voltage having an amplitude. Further, when the signal level of the reflected wave exceeds the threshold value a predetermined number of times in a unit (predetermined) time, the control unit 210 may determine that the radio wave sensor 160 has detected a human body. For example, if the determination S / N ratio is 1.5 and the predetermined number of times is 5, the reflected wave having an amplitude 1.5 times or more the noise amplitude is 5 times or more per unit time. When detected, the control unit 210 determines that the radio wave sensor 160 has detected a human body. In this case, the counter 218 counts the peak value and the bottom value of the reflected wave exceeding both or one of the upper limit threshold value and the lower limit threshold value. The unit time and the predetermined number of times may be stored in the storage unit 214 in advance.

  A human body detection time point by the radio wave sensor 160 is assumed to be t0. The human body detection time point t0 can be advanced by reducing the threshold width between the upper limit and the lower limit (that is, by reducing the determination S / N ratio). That is, in order to detect the user's human body quickly, the determination S / N ratio may be reduced. This is because the first detection region DR1 can be expanded by reducing the determination S / N ratio. If the determination S / N ratio is reduced as much as possible, the first detection region DR1 can be made very large, so that the radio wave sensor 160 detects the human body even if the user is far away from the toilet room 105. be able to.

  However, if the first detection region DR1 is greatly expanded, the radio wave sensor 160 increases the frequency of detecting a human body that does not actually enter the toilet room 105. Therefore, the threshold value is set in consideration of a balance between detecting a human body at an early time and reducing the frequency of non-entry determination.

  As will be described later, the threshold value may be determined in advance, may be automatically determined by calculation by the calculation unit 210, or may be determined manually by a user or a contractor. After the determination, the threshold value is stored in the storage unit 214.

  After entering the first detection area DR1, the user opens the door of the toilet room 105 and enters the toilet room 105. When the user enters the second detection region DR2, the pyroelectric sensor 170 detects the user's human body. When the infrared signal level exceeds a predetermined threshold voltage (change amount with respect to the initial voltage value), the control unit 210 determines that the pyroelectric sensor 170 has detected a human body. The time point when the pyroelectric sensor 170 detects the user's entry is defined as an entry time point t1.

  In the present embodiment, the time from the human body detection time t0 to the entry time t1 is defined as the approach time T1. That is, the approach time T1 is the time from the time (t0) when the measured value of the reflected wave of the microwave exceeds the threshold value to the time (t1) when the user enters the toilet room 105. In other words, the approach time T1 is from the time (t0) when the user approaches the toilet room 105 and enters the first detection region DR1 to the time (t1) when the user enters the second detection region DR2. It's time.

  Thereafter, when the user is seated on the toilet seat 140, the seat sensor 180 detects the user's human body. When the infrared signal level exceeds a predetermined threshold voltage, the control unit 210 may determine that the seating sensor 180 has detected a human body. Thus, the time when the seating sensor 180 detects the user's seating is defined as the seating time t2.

  In the present embodiment, the time from the entry time t1 to the seating time t2 is defined as the seating time T2. That is, the sitting time T2 is the time from the time (t1) when the user enters the toilet room 105 and enters the second detection region DR2 to the time (t2) when the user sits on the toilet seat 140.

  The total time from the time (t0) when the radio wave sensor 160 detects a human body to the time (t2) when the seating sensor 180 detects the seating of the user is defined as Ttotal. By increasing the total time Ttotal, the controller 210 can raise the toilet seat 140 to an appropriate temperature (target temperature) at the time t2 when the user is seated even when the standby temperature of the toilet seat 140 is low. If the standby temperature of the toilet seat 140 can be lowered, the power consumption of the toilet seat device 110 can be reduced. The standby temperature is the temperature of the toilet seat 140 during standby when the toilet device 100 is not used.

  The radio wave sensor 160 can detect the opening / closing of the door of the toilet room 105 in addition to the moving speed of the human body. For example, in the case of a hinged door made of wood having a relatively small relative dielectric constant, the reflected wave (reflected power amount) detected by the radio wave sensor 160 when the door is opened is the human body before the door is opened and closed. It becomes extremely larger than the reflected wave reflected from. Therefore, the transition of the voltage amplitude value of the detection signal output from the radio wave sensor 160 during the time period from when the user enters the detection area outside the toilet room 105 until the user opens the door and enters the toilet room 105 is: It becomes high when the user opens the door. Moreover, the moving (walking) speed at which the user approaches the toilet room 105 is approximately 1 to 3 meters / second, but the user tends to decelerate or temporarily stop when the door is opened. Therefore, the radio wave sensor 160 can detect the user entering the room by detecting the rate of reduction of the moving speed of the human body or the opening / closing of the door of the toilet room 105. Therefore, the radio wave sensor 160 may detect entry into the room instead of the pyroelectric sensor 170. Thereby, the pyroelectric sensor 170 can be omitted. Furthermore, the radio wave sensor 160 can detect the user's seating based on a time-series change in the frequency (phase) or voltage value of the microwave. Therefore, the seating sensor 180 may be omitted. That is, human body detection, room entry detection, and seating detection can be performed only by the radio wave sensor 160. In this case, the pyroelectric sensor 170 and the seating sensor 180 are not necessary, and the cost is reduced.

  By the way, the first detection area varies depending on the environment where the toilet apparatus 100 is actually installed. When the first detection region DR1 changes, the actual time (total time Ttotal) from human body detection to seating detection varies. Further, the total time Ttotal also changes depending on the moving speed of the user. For this reason, a certain amount of estimation is required for setting the total time Ttotal or setting the standby temperature of the toilet seat 140.

  The toilet seat device 110 according to the present embodiment automatically sets a standby temperature suitable for the installation environment of the toilet device 100 based on the actual measurement value of the total time Ttotal. Thereby, although some estimation is required as described above, the toilet seat device 110 raises the temperature of the toilet seat at the time of the user's seating to an appropriate temperature (first purpose) and waits for the heating toilet seat device. It is possible to achieve both reduction in temperature and reduction in power consumption (second purpose).

  Actually, depending on the installation environment of the toilet apparatus 100, the first and second purposes may not always be made compatible. However, in the present embodiment, a standby temperature that matches the actual installation environment of the toilet apparatus 100 as much as possible is set based on the actually measured value of the approach time T1 or the total time Ttotal. Thereby, this embodiment can set standby temperature so that useless power consumption may be reduced, balancing the 1st and 2nd objective. The details will be described below.

[Reference table]
First, the reference table for the total time Ttotal or the standby temperature of the toilet seat 140 will be described.

  FIG. 4 is a diagram illustrating an example of the control data table of the reference table. The reference table is a table that is set by the manufacturer before shipment so that the heating function of the toilet seat device 110 can be used immediately after the toilet device 100 is installed, and is stored in the storage unit 214 in advance. For example, in the reference table, the target temperature TEMPtrg is 29 ° C., the standby temperature TEMPstb is 26 ° C., the temperature ΔTEMP (ΔTEMP = TEMPtrg−TEMPstb) that is raised within the total time Ttotal is 3 ° C., the total time Ttotal is 6 seconds, and The determination S / N ratio is set to 1.2. Note that the standby temperature TEMPstb is set higher in the reference table so that the temperature of the toilet seat 140 reaches the target temperature TEMPtrg when the user is seated at the beginning, regardless of which user uses it.

  As described above, the actual measurement time (measured value of the total time Ttotal) from when the radio wave sensor 160 detects the human body to when the seating sensor 180 detects the seating of the user depends on the environment in which the toilet apparatus 100 is actually installed. Change. For example, this environment includes the structure of the toilet room 105 itself, the structure around the toilet room 105, the user's own characteristics, the usage status of the toilet apparatus 100, and the like. More specifically, this environment includes the position of the door of the toilet room 105, the traveling direction when the user approaches the toilet room, the moving speed of the user, the structure of the toilet room 105, and the passage (corridor) leading to the toilet room. Extending direction, door open / close state in the toilet room, toilet room wall or door material, user age (men and women), number of user clothes (season), user home time period or absence time period, It is a user's sleep time zone.

  The actual measurement time (actual measurement value of approach time T1) from when the user actually enters the first detection region DR1 until entering the room is, for example, the position of the door of the toilet room 105, when the user approaches the toilet room It varies depending on the traveling direction, the moving speed of the user, the structure of the toilet room 105, the extending direction of the passage (corridor) leading to the toilet room, the presence or absence of a door in the toilet room, the wall material of the toilet room or the door material. The actual measurement time (actual measurement value of the sitting time T2) from when the user actually enters the room to seat on the toilet seat 140 varies depending on, for example, the user's age (aged and young), the number of clothes (season) of the user, etc. To do.

  Therefore, the reference table shown in FIG. 4 is not always suitable for the environment in which the toilet apparatus 100 is installed. For this reason, the reference table is an adaptation table created based on the control data table shown in FIG. 7A and the target temperature table shown in FIG. Preferably it is updated. In this case, since the adaptation table is created after the toilet apparatus 100 is installed, the reference table may not necessarily be set.

  FIG. 5 is a graph showing the relationship between the total time Ttotal and the temperature of the toilet seat 140. The standby temperature of the toilet seat 140 is TEMPstb, the target temperature at which the user feels comfortable when seated is TEMPtrg, and the set temperature set by the user is TEMPset. The set temperature TEMPset is a desired temperature of the toilet seat 140 during a period in which the user is seated. The temperature of the toilet seat 140 is maintained at the set temperature TEMPset after being heated with high power so as to exceed the target temperature in a short time (for example, 6 seconds). On the other hand, the target temperature TEMPtrg is a temperature of the toilet seat 190 for preventing the user from feeling uncomfortable at the time of sitting, and differs depending on the material and shape of the toilet seat 140 and its thickness. In general, the temperature may be lower than the set temperature TEMPset.

  Until the human body detection time t0, the control unit 210 maintains the temperature of the toilet seat 140 at the standby temperature TEMPstb. At the human body detection time t0, the controller 210 starts heating the temperature of the toilet seat 140 from the standby temperature TEMPstb by the heater 142. Then, at the seating time t2, the temperature of the toilet seat 140 needs to reach the target temperature TEMPtrg. The inclination of the temperature change T140 of the toilet seat 140 shown in FIG. 5 is determined by the heat transfer characteristics from the heater 142 to the toilet seat 140, the voltage applied to the heater 142, and the energization time.

  When the measured value of the total time Ttotal is shortened as shown by the broken line in FIG. 5, since the heating start time of the toilet seat 140 is delayed, the temperature of the toilet seat 140 is raised to the target temperature TEMPtrg when the user is seated. Therefore, the standby temperature TEMPstb must be increased as shown by the arrow. Even when various users use the toilet apparatus 100 as in the setting of the reference table, the standby temperature TEMPstb of the reference table is used to reliably raise the toilet seat 140 to the target temperature TEMPtrg at the seating time t2. The setting of is determined statistically. For example, a standard toilet room 105 as shown in FIG. 6 is set and a plurality of users use the toilet apparatus 100. At this time, the toilet seat apparatus 110 measures the time from the human body detection time t0 to the seating time t2. The minimum value among the actually measured values may be set as the total time Ttotal of the reference table, and the standby temperature TEMPstb of the reference table may be set based on the total time Ttotal. The reference table after setting is stored in the storage unit 214. In the reference table, the minimum value of the actual measurement time from the human body detection time point t0 to the seating time point t2 is set as the total time Ttotal. The toilet seat 140 can be reliably heated to the target temperature TEMPtrg at time t2.

  Alternatively, the most frequently used measurement value may be set as the total time Ttotal from the measured value histogram of the total time Ttotal, and the standby temperature TEMPstb may be set based on the total time Ttotal. As in the case where the user rushes into the toilet room 105, the actual measurement value from the human body detection time t0 to the seating time t2 may be very short. By setting a time with a high frequency as the total time Ttotal, such an exceptional situation can be eliminated and the standby temperature TEMPstb of the reference table can be set.

[Adaptive table automatic setting]
Next, automatic setting of the adaptation table will be described. The reference table shown in FIG. 4 may not be suitable for the environment in which the toilet apparatus 100 is installed as described above. In some cases, the reference table is not stored in the storage unit 214. In such a case, it is necessary to automatically or manually set an adaptation table suitable for the environment in which the toilet apparatus 100 is installed. The adaptation table includes at least information on the standby temperature TEMPstb and the total time Ttotal (approach time T1, seating time T2) set so as to be adapted to the installation environment of the toilet device 100. / N ratio) and the like.

  FIG. 7A is a diagram showing a control data table used for automatically setting the standby temperature TEMPstb of the adaptation table. In the present embodiment, the control unit 210 selects a standby temperature TEMPstb suitable for the installation environment of the toilet device 100 from the control data table based on the actual measurement value of the total time Ttotal actually measured after the toilet device 100 is installed. . Here, it is assumed that the target temperature TEMPtrg and the determination S / N ratio are fixed to the same values as those in the reference table. For example, TEMPtrg is fixed at 29 ° C. and S / N ratio is fixed at 1.2. When there is no reference table, the target temperature TEMPtrg and the determination S / N ratio are set by the user or the contractor operating the function setting unit 132 of the remote operation device 130.

  For example, when the actual measurement value of the total time Ttotal is 5.5 seconds, the control unit 210 determines the standby temperature TEMPstb to be 26 ° C. based on the control data table. As shown in FIG. 7A, the longer the total time Ttotal, the longer the time for heating the toilet seat 140. Therefore, the longer the total time Ttotal, the higher the temperature rise temperature ΔTEMP and the waiting time. The temperature TEMPstb can be lowered.

  In the control data table shown in FIG. 7A, the control unit 210 determines the standby temperature TEMPstb based on the total time Ttotal. Alternatively, the sitting time T2 may be fixed to a predetermined time, and the standby temperature TEMPstb may be determined based on the actual measurement value (actual measurement time) of the approach time T1. That is, the control unit 210 may determine the actual measurement time from the user's human body detection to the room entry detection as the approach time T1, and set the standby temperature TEMPstb based on the approach time T1. In this case, the control data table in FIG. 7A may be a table showing the correspondence between the approach time T1 and the standby temperature TEMPstb, instead of the correspondence between the total time Ttotal and the standby temperature TEMPstb.

  FIG. 7B is a diagram showing a target temperature table used for selecting the target temperature TEMPtrg. In FIG. 7A, the target temperature TEMPtrg is fixed to a predetermined value, but the target temperature TEMPtrg is made variable by adding the target temperature table of FIG. 7B to the control data table of FIG. 7A. Can be.

  When changing the target temperature TEMPtrg (for example, 29 ° C.), the control unit 210 sets a value obtained by subtracting the temperature increase temperature ΔTEMP from the changed target temperature TEMPtrg as the standby temperature TEMPstb. For example, when the actual measurement value of the total time Ttotal is 6 seconds, the standby temperature TEMPstb is determined to be 26 ° C. according to the control data table of FIG. Since the target temperature TEMPtrg at this time is 29 ° C., the temperature rise temperature ΔTEMP is 3 ° C. When the target temperature TEMPtrg is changed from 29 ° C. to 27 ° C., the control unit 210 selects 24 ° C. (24 ° C. = 27 ° C.−3 ° C.) as the standby temperature TEMPstb. The control unit 210 may select the standby temperature TEMPstb using the target temperature table, and may calculate TEMPtrg−ΔTEMP every time the target temperature TEMPtrg is changed.

  Although not shown in FIGS. 7A and 7B, when the set temperature TEMPset of the toilet seat 140 is changed by the user, the control unit 210 also sets the target temperature TEMPtrg and / or the standby temperature TEMPstb. You may change similarly to temperature TEMPset. Further, normally, among the target temperature TEMPtrg, the standby temperature TEMPstb and the set temperature TEMPset, the temperature set by the user is only the set temperature TEMPset, but the user may also set the target temperature TEMPtrg and / or the standby temperature TEMPstb. . In this case, the user may set the target temperature TEMPtrg and / or the standby temperature TEMPstb using the function setting unit 132. When the user sets the target temperature TEMPtrg, the control unit 210 changes the standby temperature TEMPstb in the adaptation table based on the target temperature TEMPtrg selected by the user from the target temperature table. That is, the control unit 210 creates an adaptation table based on the approach time T1, and changes the standby temperature TEMPstb of the adaptation table based on the target temperature TEMPtrg selected by the user from the target temperature table.

  Thus, even when the user can set the target temperature, the toilet seat device 110 raises the temperature of the toilet seat to the target temperature TEMPtrg when the user is seated, and the standby temperature TEMPstb suitable for the installation environment. Can be set.

  Thereby, the control unit 210 can set the standby temperature TEMPstb corresponding to the target temperature according to the user's preference. The adaptation table is suitable for the installation environment of the toilet device 100. Therefore, the toilet seat apparatus 110 can create an adaptation table that takes into account user preferences while maintaining a balance between the first and second objectives.

  FIG. 8 is a flowchart showing a procedure for automatically creating an adaptation table. First, it is confirmed whether or not the adaptation table is already stored in the storage unit 214 (S100). For example, when there is no reference table, a user or a contractor sets a target temperature TEMPtrg, a determination S / N ratio, and the like, and an adaptation table is created based on the settings. Thus, when the adaptation table has already been created and stored in the storage unit 214 (YES in S100), immediate warming control of the toilet seat apparatus 110 is executed using the adaptation table (S120).

  When the adaptation table is not stored in the storage unit 214 (NO in S100), the control unit 210 reads the reference table from the storage unit 214 (S110), and starts immediate warming control using the reference table (S120).

  Then, until the user approaches the toilet room 105 and the radio wave sensor 160 detects a human body, the toilet seat apparatus 110 is in a standby state (NO in S130). In the standby state, the controller 210 maintains the temperature of the toilet seat 140 at the standby temperature TEMPstb.

  When the user approaches the toilet room 105 and the measured value of the reflected wave of the microwave exceeds the threshold (YES in S130), the control unit 210 determines that the radio wave sensor 160 has detected a human body. At the same time, the toilet seat device 110 starts the temperature raising operation of the toilet seat 140, and the timer 216 starts measuring time (S140).

  Next, when the user enters the toilet room 105 and the pyroelectric sensor 170 detects the user's human body (YES in S150), the storage unit 214 stores the approach time T1 based on the time of the timer 216 at that time. (S160). At this time, the time from the human body detection time t0 of the radio wave sensor 160 to the entry detection time t1 of the pyroelectric sensor 170 is the approach time T1. That is, at this stage, an actual measurement value of the approach time T1 is obtained. When the human body detection time point t0 is 0 second, the storage unit 214 may store the entry detection time point t1 itself as the approach time T1.

  On the other hand, after the radio wave sensor 160 detects a human body, the user may not enter the toilet room 105 (NO in S150). In such a case, the temperature raising operation of the toilet seat 140 needs to be stopped. Therefore, after the human body detection time t0, when the time of the timer 216 exceeds the first time limit, the control unit 210 determines that the user does not enter the toilet room 105. Hereinafter, when the toilet seat device 110 starts the temperature raising operation and the control unit 210 determines that the user does not enter the room is referred to as non-room entry determination. When the control unit 210 determines that the non-entry determination has been established, the timer 216 finishes timing and resets the time (S155). The toilet seat device 110 stops the temperature raising operation and returns to the standby state in step S130. The first time limit is set to a time that is longer than the approach time T1 of the reference table and shorter than the time from when the user enters the room to sit on the toilet seat 140 (corresponding to a seating time T2 described later), Stored in the storage unit 214 in advance.

  When the seating sensor 180 detects the seating of the user after entering the room (YES in S170), the storage unit 214 stores the seating time T2 based on the time of the timer 216 at that time (S180). At this time, the time (t2-t1) from the entrance detection time t1 of the pyroelectric sensor 170 to the seating detection time t2 of the seating sensor 180 becomes the seating time T2. That is, at this stage, an actual measurement value of the sitting time T2 and an actual measurement value (T1 + T2) of the total time Ttotal are obtained. When the human body detection time point t0 is 0 second, the storage unit 214 may store the seating detection time point t2 itself as the total time Ttotal.

  On the other hand, after the pyroelectric sensor 170 detects the user's entry, the user may not be seated on the toilet seat part 140 as in the case of male urination (NO in S170). In such a case, it is also necessary to stop the temperature raising operation of the toilet seat 140. Therefore, after the human body detection time t0, when the time of the timer 216 exceeds the second time limit, the control unit 210 determines that the user does not use the toilet device 100. Hereinafter, for convenience, this determination is referred to as non-use determination. When the control unit 210 determines that the non-use determination is established, the timer 216 ends the time measurement and resets the time (S155). Moreover, the toilet seat apparatus 110 returns to the standby state of step S130. The second time limit is set to a time sufficiently longer than the total time Ttotal of the reference table and is stored in the storage unit 214 in advance. The second control time is preferably longer than the first time limit.

  When the non-use determination is made, the actually measured value of the approach time T1 obtained in step S160 may be deleted from the storage unit 214. However, the actual measurement value of the approach time T1 may be stored in the storage unit 214. In this case, the actually measured value of the approach time T1 may be used when calculating the approach time T1 of the adaptation table in step S200.

  In step S180, the timer 216 finishes timing and resets the time. Thereafter, the counter 218 increments the storage count by 1 (S190). The number of times of storage is the number of times the sitting time T2 is stored in the storage unit 214 in step S180.

  If the number of times of storage has not yet exceeded a predetermined number of times (for example, 10 times) (NO in S195), the toilet seat device 110 returns to the standby state (S130), and further, the approach time T1, the seating time T2, and the total time Ttotal Continue measuring each actual value. That is, the toilet seat apparatus 110 repeatedly executes steps S130 to S195.

  When the number of times of storage exceeds the predetermined number of times (YES in S195), the control unit 210 calculates the measured values of the approach time T1 and the seating time T2 stored in the storage unit 214, and approaches the approach time T1 of the adaptation table, A seating time T2 and a total time Ttotal are determined (S200). For example, the control unit 210 may simply average the actually measured values of the ten approach times T1 stored in the storage unit 214, and use the average value as the approach time T1 of the adaptation table. Alternatively, the control unit 210 averages the actual measurement values excluding the maximum value and the minimum value among the ten actual measurement values stored in the storage unit 214 and uses the average value as the approach time T1 of the adaptation table. Also good. Furthermore, the control unit 210 averages five actually measured values from the smaller one of the ten actually measured values stored in the storage unit 214, and the average value is used as the adaptive table approach time T1. It is good. The seating time T2 of the adaptation table is also obtained by calculating in the same manner as the approach time T1. Further, when the actual measurement value of the total time Ttotal is stored in the storage unit 214, the control unit 210 may calculate the total time Ttotal of the adaptation table in the same manner as the approach time T1. Note that the method of calculating the approach time T1, the sitting time T2, and / or the total time Ttotal used for the adaptation table is not limited to the above calculation.

  When only the approach time T1 and the sitting time T2 of the adaptation table are calculated in step S200, and the total time Ttotal of the adaptation table is not calculated, the calculation unit 210 adds the approach time T1 and the sitting time T2 of the adaptation table. (S210), and the result may be the total time Ttotal of the adaptation table. The approach time T1, the sitting time T2, and the total time Ttotal calculated in step S200 are stored in the storage unit 214 as a part of the adaptation table (S220).

  Further, the control unit 210 refers to the control data table shown in FIG. 7A and determines the standby temperature TEMPstb using the total time Ttotal of the adaptation table (S230). For example, when the total time Ttotal of the adaptation table is 8.5 seconds, the control unit 210 determines the standby temperature TEMPstb to be 23 ° C. In this example, the standby temperature TEMPstb can be lowered by 3 ° C. from 26 ° C. in the reference table of FIG. 4 to 23 ° C. in the adaptation table. The standby temperature TEMPstb determined at this time is also stored in the storage unit 214 as part of the adaptation table. As described above, the present embodiment can automatically create an adaptation table including the standby temperature TEMPstb suitable for the environment where the toilet apparatus 110 is installed (S240).

  In this way, the adaptation table shown in FIG. 9 is completed. In the present embodiment, the target temperature TEMPtrg and the determination S / N ratio are fixed in advance. Further, since the temperature increase temperature ΔTEMP is a temperature difference between the target temperature TEMPtrg and the standby temperature TEMPstb, the control unit 210 simply subtracts the standby temperature TEMPstb from the target temperature TEMPtrb when the standby temperature TEMPstb is determined. The temperature rise temperature ΔTEMP can be calculated.

  After creating the adaptation table, the toilet seat apparatus 110 executes immediate warming control using the adaptation table.

  As described above, in the present embodiment, the approach time T1, the seating time T2, and / or the total time Ttotal of the adaptation table are calculated from the actually measured values, and the standby temperature TEMPstb is calculated from the control data table based on the calculation results. To decide. Thereby, this embodiment can create the adaptation table suitable for the installation environment of the toilet apparatus 100. By performing the immediate warming control according to the adaptive table, the toilet seat device 110 takes into account the installation environment of the toilet device 110 and allows the temperature of the toilet seat portion 140 to be raised to the target temperature TEMPtrg as much as possible when the user is seated. A low standby temperature TEMPstb can be set. That is, the toilet seat device 110 according to the present embodiment takes into account the installation environment of the toilet device 110, and balances between the comfort of the user when using the toilet device 100 and the reduction in power consumption of the toilet seat device 110 (first). And an adaptation table can be created to balance the second purpose.

  In addition, since the adaptive table is automatically created in the present embodiment, the user and the contractor do not need to set the adaptive table and do not need to be aware of the reference table and the adaptive table.

  Furthermore, in step S200, the present embodiment creates an adaptation table based on a plurality of actual measurement values for each of the approach time T1, the seating time T2, and / or the total time Ttotal, so that the adaptation table for the installation environment of the toilet apparatus 100 is created. The accuracy (degree of conformity to the environment) is high. For example, the control unit 210 does not create the adaptation table based only on exceptional situations such as when the user rushes into the toilet room 105 and enters the room. That is, since the adaptation table is created by calculating a plurality of actual measurement values, the adaptation table can be more adapted to the installation environment of the toilet device 100. This leads to an improvement in the balance between the first and second purposes.

  In step S200, in each of the approach time T1, the seating time T2, and / or the total time Ttotal, the control unit 210 removes the maximum value and the minimum value from the plurality of actually measured values, thereby making the above exceptional The situation can be eliminated. This also leads to an improvement in the balance between the first and second purposes.

  Furthermore, in step S200, at each of the approach time T1, the seating time T2, and / or the total time Ttotal, the control unit 210 uses a plurality of actually measured values having a small value among the plurality of actually measured values, thereby increasing the moving speed. An adaptation table can be created to suit the user. Therefore, the controller 210 can reliably raise the temperature of the toilet seat 140 to the target temperature TEMPtrg or higher when most users are seated. For example, when an adaptation table is prepared so as to be adapted to an elderly person whose movement speed is slow (actual approach time T1 is long), when a young person whose movement speed is faster than that of the elderly person uses the toilet apparatus 100, the toilet seat It may occur that the temperature of the portion 140 does not reach the target temperature TEMPtrg. In order to avoid such a situation, the control unit 210 according to the present embodiment creates a matching table so as to suit a young person whose movement speed is fast (actual approach time T1 is short). Thus, regardless of whether a young person or an elderly person uses the toilet apparatus 100, the temperature of the toilet seat 140 can surely reach the target temperature TEMPtrg.

[Update adaptive table]
As described with reference to FIG. 8, the adaptation table is created so as to match the installation environment of the toilet apparatus 100. Therefore, the adaptation table once created may be used for immediate warm control continuously as it is. However, the adaptation table may not be adapted to the actual environment due to changes in the environment in which the toilet apparatus 100 is installed. For example, the detection time of the human body is detected by a change in the user's age, a change in the season (change in the user's clothes), a change in the user's home time zone, a change in the user's sleep time zone, a change in the structure of the toilet room 105 due to remodeling, etc. The actual time from t0 to the seating time t2 may change.

  For example, when the room temperature of the toilet room 105 decreases due to a seasonal change or the like, if the approach time T1 is always constant, the temperature of the toilet seat may not be raised to the target temperature TEMPtrg when the user is seated, which may make the user uncomfortable. is there. On the other hand, when the room temperature of the toilet room 105 rises due to a seasonal change or the like, if the approach time T1 is always constant, the standby temperature TEMPstb may be higher than necessary and wasteful power consumption may increase.

  Thus, due to the change in the installation environment, the temperature of the toilet seat 140 may not reach the target temperature TEMPtrg at the time t2 when the user is seated. Alternatively, there is a possibility that the standby temperature TEMPstb is higher than necessary, and the toilet seat device 110 consumes useless power during standby. That is, the balance between the first and second purposes once set may be lost due to a change in the installation environment of the toilet apparatus 100. Therefore, it is conceivable to update the adaptation table again in order to balance the first and second objects.

  FIG. 10 is a flowchart showing the procedure for updating the adaptation table. First, after the adaptation table is created in FIG. 8, steps S120 to S180 in FIG. 8 are further executed. Thereby, the actual measurement value of the approach time T1 (update actual measurement time) and the actual measurement value of the sitting time T2 are further measured. Each measured value of the approach time T1 and the seating time T2 is stored in the storage unit 214. Here, the measured values of the newly measured approach time and seating time are T1N and T2N, respectively.

  Next, the control unit 210 compares the approach time T1N as the update actual measurement time with the approach time T1 of the adaptation table (S300). For example, it is determined whether or not the approach time T1N is within a predetermined ratio range (for example, ± 30%) with respect to the approach time T1 of the adaptation table. This is to eliminate the approach time T1N obtained in an exceptional situation such as when the user runs into the toilet room 105. Note that the method of eliminating such an exceptional approach time T1N is not limited to this specific example.

  When the approach time T1N is within a predetermined ratio range (for example, ± 30%) with respect to the approach time T1 of the adaptation table (YES in S300), the control unit 210 determines that the approach time T1N and the approach time of the adaptation table The average value with T1 is registered in the adaptation table as a new approach time T1 (S310). Note that the new approach time T1 is not limited to the average value of the approach time T1N and the approach time T1 of the original adaptation table, and may be a value obtained by another calculation. For example, the original approach time T1 and approach time T1N may be weighted and averaged based on the actual number of times of approach time T1. Specifically, when the original approach time T1 is an average value of n actual measurement times, since the approach time T1N is one actual measurement value, the control unit 210 (T1 × n + T1N × 1) × ( The result of calculating n + 1) may be used as a new approach time T1. That is, the control unit 210 calculates the average value by setting the weight of the original approach time T1 to n and the weight of the actually measured approach time T1N as 1. At this time, the counter 218 counts the number of measurements of the approach time t1, and sets n to n + 1. When calculating the next new approach time T1, the control unit 210 sets the weight of the approach time T1 of the adaptation table at that time to (n + 1), and sets the weight of the next actually measured approach time T1N to 1. That's fine. The number of measurements of the counter 218 may be reset manually or automatically as necessary.

  On the other hand, when the approach time T1N is not within a predetermined ratio range (for example, ± 30%) with respect to the approach time T1 of the adaptation table (NO in S300), the control unit 210 sets the approach time T1 of the adaptation table. Do not update.

  Next, the controller 210 compares the newly measured seating time T2N with the seating time T2 of the adaptation table (S320). For example, it is determined whether or not the sitting time T2N is within a predetermined range (for example, ± 30%) with respect to the sitting time T2 of the adaptation table. This is also to eliminate the sitting time T2N obtained in an exceptional situation as described above. In addition, the method of eliminating such exceptional seating time T2N is not limited to this specific example.

  When the seating time T2N is within a predetermined ratio range (for example, ± 30%) with respect to the seating time T2 of the adaptation table (YES in S320), the control unit 210 determines that the seating time T2N and the seating time of the adaptation table. The average value with T2 is registered in the adaptation table as a new seating time T2 (S330). The new seating time T2 is not limited to the average value of the seating time T2N and the seating time T2 of the original adaptation table, and may be a value obtained by another calculation. For example, the seating time T2 may be averaged by weighting the original seating time T2 and the seating time T2N based on the actual number of times of the seating time T2 as in the approach time T1.

  On the other hand, when the sitting time T2N is not within a predetermined ratio range (for example, ± 30%) with respect to the sitting time T2 of the adaptive table (NO in S320), the control unit 210 sets the sitting time T2 of the adaptive table. Do not update.

  Thereafter, the control unit 210 executes steps S210 to S230 of FIG. 8 and updates the standby temperature TEMPstb of the adaptation table based on the updated approach time T1 and the updated seating time T2.

  After updating the adaptation table, the actual measurement values of the approach time T1N and the seating time T2N are no longer necessary, and are deleted from the storage unit 214 (S340). Thereafter, the toilet seat apparatus 110 performs immediate warming control using the updated adaptation table.

  In the present embodiment, the measurement of the approach time T1N and the seating time T2N is continuously performed, and the adaptation table is updated based on the actually measured values. Thereby, this embodiment can update an adaptation table according to the change of the installation environment of the toilet apparatus 100. FIG. As a result, even if the environment changes and the balance between the first purpose and the second purpose is lost, the toilet seat device 110 updates the adaptation table to balance the first purpose and the second purpose. Can be recovered. That is, even if the environment changes, by appropriately updating the standby temperature TEMPstb of the adaptation table, the toilet seat device 110 raises the temperature of the toilet seat 140 to the target temperature TEMPtrg when the user is seated, and the toilet seat device 110 Can save unnecessary power consumption.

  For example, when the environment such as the air temperature changes due to the change of seasons, the appropriate standby temperature TEMPstb also changes. Even in such a case, the standby temperature TEMPstb can be appropriately set again by updating the adaptation table based on the actually measured value of the approach time T1N.

  As described above, due to a change in the installation environment, the first purpose may not be achieved, causing the user to feel uncomfortable, or the second purpose may not be achieved, resulting in an increase in power consumption. In the present embodiment, the actual measurement time for update is measured after the change of the installation environment, and the approach time T1 is updated based on the actual measurement time for update.

  Thereby, since the toilet seat apparatus 110 can use the approach time T1 suitable for the change of the installation environment, it is possible to rebalance the first purpose and the second purpose.

[Select from multiple adaptation tables]
In step S220 of FIG. 8, the approach time T1, the sitting time T2, and the total time Ttotal determined in steps S200 and S210 are stored in the storage unit 214 as one adaptation table together with a predetermined determination S / N ratio. . However, the storage unit 214 may store a plurality of adaptation tables corresponding to the installation environment of the toilet device 100.

  FIG. 11 is a flowchart showing the operation of the toilet seat apparatus 110 for setting a plurality of adaptation tables. For example, based on the time zone when the adaptation table is created, the control unit 210 sets a plurality of adaptation tables having different determination S / N ratios. In this case, the timer 216 shown in FIG. 2 has a clock function for measuring the date and time. The storage unit 214 stores a plurality of determination S / N ratios corresponding to a plurality of time zones. For example, in the time zone of the day, the first time zone is from 8 am to 10 pm, and the second time zone is from 10 pm to 8 am. Then, the storage unit 214 stores in advance a first determination S / N ratio corresponding to the first time zone and a second determination S / N ratio corresponding to the second time zone.

  When approach time T1, seating time T2, and / or total time Ttotal is determined in steps S200 and S210, control unit 210 determines whether the determined time is included in the first time zone or the second time zone. Is determined (S500).

  When the determined time such as the approach time T1 is included in the first time zone (YES in S500), the control unit 210 performs the first determination on the determined approach time T1, the sitting time T2, and / or the total time Ttotal. The first adaptive table is stored in the storage unit 214 in combination with the S / N ratio (S510). Thereafter, the toilet seat apparatus 110 performs immediate warming control using the first adaptation table.

  On the other hand, when the determined time such as the approach time T1 is included in the second time zone (NO in S500), the control unit 210 determines the determined approach time T1, the sitting time T2, and the total time Ttotal as the second determination. The second adaptive table is stored in the storage unit 214 in combination with the S / N ratio (S520). Thereafter, the toilet seat apparatus 110 performs immediate warming control using the second adaptation table.

  For example, since the first time zone is a user activity time zone, the first determination S / N ratio is set to a low level. When the first detection region DR1 is set widely, the user often passes through the first detection region DR1 during the user's activity. This increases the frequency of non-entry determination. Accordingly, the first determination S / N ratio is set to a high value in order to suppress the frequency of non-room determination. When the first determination S / N ratio is high, the adaptation table approach time T1 is set short. Therefore, the controller 210 needs to set the standby temperature TEMPstb to a high value in order to raise the temperature of the toilet seat 140 to the target temperature TEMPtrg when the user is seated. However, on the other hand, the frequency of non-entry determination can be suppressed. Therefore, according to the present embodiment, the consumption of the toilet seat apparatus 110 as a whole is canceled by offsetting the increase in power consumption due to the high standby temperature TEMPstb and the reduction in power consumption due to the reduction in non-room determination. Electric power can be kept low.

  Conversely, since the second time zone is the user's sleep time zone, the second determination S / N ratio is set lower than the first determination S / N ratio. The user rarely passes through the first detection region DR1 during the sleeping hours. Therefore, since it can be estimated that the frequency of non-entry determination is low, the second determination S / N ratio may be set lower. If the second determination S / N ratio is low, the radio wave sensor 160 detects the human body at an early stage, and therefore the approach time T1 of the adaptation table is set to be long. Therefore, the control unit 210 can set the standby temperature TEMPstb low. Thereby, the power consumption of the toilet seat apparatus 110 can be reduced.

  When the time zone is changed from the first time zone to the second time zone or from the second time zone to the first time zone after the creation of the first or second adaptation table, the control unit 210 The flow shown in FIG. 8 is executed again, and the other adaptation table that has not yet been created is created. Thereby, both the first and second adaptation tables are created.

  After that, based on the time of the timer 214, the control unit 210 selects the first adaptation table and immediately uses the first adaptation table when the time is included in the first time zone. When the warming control is executed and the time is included in the second time zone, the second adaptation table is selected, and the immediate warming control is executed using the second adaptation table. Thereby, the toilet seat apparatus 110 can perform immediate warming control using the some adaptation table which changes with time zones.

  As described above, the toilet seat apparatus 110 according to the present embodiment creates a plurality of adaptation tables corresponding to changes in the actual installation environment, and selects an adaptation table corresponding to the environment from the plurality of adaptation tables. Thereby, the toilet seat apparatus 110 achieves the first object by balancing the standby temperature TEMPstb and the frequency of the non-entry determination so as to cope with the change in the installation environment of the toilet apparatus 100. Electric power can be reduced.

  In the present embodiment, two different adaptation tables are used, but three or more different adaptation tables may be used. Thereby, the toilet seat apparatus 110 can perform immediate warming control using the adaptation table further adapted to the environmental change.

  Further, the target temperature TEMPtrg may be changed for each of the plurality of adaptation tables. In this case, it is conceivable to change the target temperature TEMPtrg for each season. For example, the control unit 210 sets the target temperature TEMPtrg to be relatively low from June to September, and sets the target temperature TEMPtrg to be relatively high from October to May. If the target temperature TEMPtrg is set relatively low, the standby temperature TEMPstb can be set low accordingly. Therefore, the control unit 210 can reduce the power consumption of the toilet seat device 110 in accordance with a change in the installation environment of the toilet device 100.

  As described above, this embodiment can detect a user who is not only in the toilet room 105 but outside the toilet room 105 by using the radio wave sensor 160. For this reason, it becomes possible to take a long time to raise the temperature from the standby temperature TEMPstb to the target temperature TEMPtrg.

  The standby temperature TEMPstb is set based on the approach time T1 from when the sensor unit 150 detects the user's human body to when the user enters the room. That is, the standby temperature TEMPstb is determined as a part of the heating time required for the approach time T1 to raise the toilet seat to the target temperature TEMPtrg. For this reason, even if the standby temperature TEMPstb is lowered, it is possible not only to surely raise the temperature to a comfortable temperature at the time of sitting, but also to raise the temperature raising capability of the heater 142 as low as possible. Thereby, the toilet seat apparatus 110 can improve safety | security and can reduce useless power consumption.

  Furthermore, when the human body outside the toilet room 105 is detected from the toilet room 105 using the radio wave sensor 160, the detection range outside the toilet room 105 is influenced by the passage form of the house and the wall material of the toilet room 105. DR1 may change. However, in this embodiment, the standby temperature TEMPstb is determined based on the actually measured approach time T1. For this reason, even if the installation environment of the toilet seat device 110 such as a house passage form or a wall material of the toilet room 105 changes, the toilet seat device 110 can set the standby temperature TEMPstb according to the installation environment. Therefore, the toilet seat apparatus 110 can raise the temperature of the toilet seat part 140 to the target temperature TEMPtrg when the user is seated.

  As a result, although a certain amount of estimation is required as described above, the temperature of the toilet seat is raised to an appropriate temperature when the user is seated (first purpose), and the standby temperature TEMPstb is reduced to reduce power consumption. It is possible to set a standby temperature that is adapted as much as possible to the actual installation environment of the toilet device 100 while making it compatible (second purpose).

  The controller 210 starts measuring the approach time T1 from the time when the measured value of the reflected wave of the radio wave exceeds a predetermined threshold value. Since the detection range outside the toilet room changes depending on the threshold value (for example, the determination S / N ratio), the approach time T1 can be controlled to some extent.

  Thereby, as described above, when the first detection range DR1 cannot be widened due to the installation environment of the toilet seat apparatus 110, or when the approach time T1 cannot be increased depending on the time zone, the control unit 210 changes the threshold value. Thus, the approach time T1 can be lengthened. Alternatively, when the approach time can be increased depending on the time zone, the control unit 210 can increase the approach time T1 by changing the threshold value. By changing the first detection range DR1 and adjusting the approach time T1, the toilet seat apparatus 110 sets the standby temperature TEMPstb suitable for the installation environment, or reduces the standby temperature TEMPstb as much as possible while seating the user. Sometimes it is possible to reliably raise the temperature to the target temperature TEMPtrg.

  As a result, the toilet seat device can reduce wasteful power consumption while balancing the first and second purposes so as to be adapted to the actual installation environment.

  In the present embodiment, since the approach time T1 is determined based on a plurality of actual measurement times, the accuracy of the adaptation table with respect to the installation environment of the toilet seat device 110 (degree of adaptation to the environment) is high. Further, by using a plurality of actual measurement times, it is possible to prevent the approach time T1 from being determined based only on sudden or exceptional situations.

  In the present embodiment, the approach time T1 is determined using a plurality of measured times having a small value among a plurality of measured times. Thereby, the control unit 210 can set the standby temperature TEMPstb so as to be suitable for a user having a high moving speed. Thereby, the toilet seat apparatus 110 can raise the temperature of a toilet seat reliably more than target temperature TEMPstb at the time of the seating of most users. Also in this case, since the standby temperature TEMPstb is determined based on the actually measured value of the approach time T1, the toilet seat apparatus 110 can set the standby temperature TEMPstb according to the installation environment. Accordingly, in the present embodiment, the standby temperature TEMPstb can be reduced as much as possible in consideration of the installation environment while raising the temperature to the target temperature TEMPtrg when the user is seated.

  As a result, wasteful power consumption can be reduced while balancing the first and second purposes so as to be adapted to the actual installation environment of the toilet seat apparatus 110.

  Further, by selecting a plurality of adaptive tables having different determination S / N ratios according to the installation environment of the toilet apparatus 100, the present embodiment selects an approach time T1 corresponding to the set environment from the plurality of approach times T1. The standby temperature TEMPstb is set based on the selected approach time T1.

  As a result, it is possible to set a plurality of standby temperatures TEMPstb corresponding to changes in the actual installation environment (changes in time zones, changes in seasons, etc.). The toilet seat apparatus 110 can select the standby temperature TEMPstb so as to respond to a change in the installation environment, and can raise the temperature to the target temperature TEMPtrg when the user is seated.

  The radio wave sensor 160 also detects a user who is outside the toilet room 105. For this reason, non-entry determination may occur in the time zone when the user is active or at home. In particular, in order to decrease the standby temperature TEMPstb, when the first detection range DR1 is expanded and the approach time T1 is set to be long, the non-entry determination may frequently occur. When the non-entry determination frequently occurs, useless power consumption increases even if the standby temperature TEMPstb is low.

  Therefore, if it is determined that the non-entrance determination frequently occurs, even if the standby temperature TEMPstb needs to be set higher, the threshold is set higher to narrow the first detection range DR1 and the frequency of the non-entrance determination Is preferable in order to reduce power consumption.

On the other hand, in the time zone when the user is not active or the time when the user is out, the frequency of non-entry determination is low. In this case, even if the threshold value is set low and the first detection range DR1 is widened, it can be estimated that the frequency of non-entry determination is low. Therefore, it is preferable to widen the first detection range DR1 (increase the approach time T1) and set the standby temperature TEMPstb low in order to reduce power consumption.
Thus, the toilet seat apparatus 110 sets the standby temperature TEMPstb adapted to the time by selecting the approach time T1 according to the time.

  As a result, the toilet seat apparatus can balance the standby temperature TEMPstb and the frequency of non-entry determination so as to reduce the power consumption in the actual change in the installation environment while achieving the first object.

(Second Embodiment)
FIG. 12 (A) is a conceptual diagram showing the structure of the toilet device 100 and the toilet room 105 according to the second embodiment of the present invention and the approach direction of the user. The configuration of the toilet seat device 110 according to the second embodiment may be the same as that of the first embodiment. In the second embodiment, a user or a contractor selects a threshold based on environmental information such as the position of the door of the toilet room 105 and the user's entry direction. The toilet seat apparatus 110 executes the flow shown in FIG. 8 using the selected threshold value, and automatically creates an adaptation table. That is, the threshold value is manually selected by the user or the contractor, and the adaptive table is automatically created by the control unit 210 using the reference table.

  In the second embodiment, as the environment information, the position of the door of the toilet room 105 and the user entry direction are typically considered. However, the environment information may include any of the installation environments of the toilet device 110 described above. This is because a more accurate adaptation table can be created by considering more environments.

  In the second embodiment, the door is provided on either the front surface of the toilet room 105 (the front surface of the toilet device 110) or the side surface (the side surface of the toilet device 110). When the door 107 is provided in front of the toilet room 105, the user's approach direction is from the front of the toilet room 105 (substantially perpendicular to the front) (environmental information (I)) and the toilet. It can be divided into a case (environment information (II)) approaching from the side of the room 105 (a direction substantially parallel to the front). As shown in FIG. 1B, as long as the first detection region DR1 extends symmetrically with respect to the toilet device 110, the threshold value is set when the user enters from the right side of the toilet room 105 and on the left side. It may be the same when entering from.

  When the door 107 is provided on the side surface of the toilet room 105, when the user approaches from the front of the toilet room 105 in a direction substantially parallel to the side surface of the toilet room 105 (environment information (III)) When approaching from the side of the toilet room 105 (substantially perpendicular to the side surface) (environmental information (IV)), approaching from the rear of the toilet room 105 in a direction substantially parallel to the side surface of the toilet room 105 Case (environmental information (V)). Since the first detection region DR1 extends symmetrically with respect to the toilet device 110, the first detection region DR1 is approached from the front of the toilet room 105 (environmental information (III)) and is approached from the rear of the toilet room 105 ( In the environmental information (V)), the threshold is preferably different. In FIG. 12A, a broken arrow indicates the door opening / closing direction.

  FIG. 12B is a threshold selection table showing the correspondence between the environment information (I) to (V) of the toilet seat device 110 and the threshold. The threshold selection table is a table composed of a plurality of combinations in which threshold values suitable for various environments and environmental information assumed in advance where the toilet seat 140 is actually installed are associated with each other, and stored in the storage unit 214 in advance. ing. Here, the deceleration rate as one of the threshold values indicates a ratio of deceleration with respect to the speed of the user when entering the first detection region DR1. For example, the deceleration rate = 30% means that the speed of the user when entering the first detection region DR1 is 100%, and a speed that is 30% lower than the speed is set as a threshold value. When the moving speed of the user falls below this threshold, the toilet seat device 110 starts to raise the temperature of the toilet seat unit 140. As described above, the microwave is used for speed detection by utilizing the Doppler effect. Therefore, the radio wave sensor 160 can detect the moving speed of the user. Therefore, the radio wave sensor 160 can also detect the user's deceleration rate based on the difference between the transmitted microwave frequency and the reflected wave frequency.

  Thus, in 2nd Embodiment, the control part 210 selects a threshold value from a threshold value selection table according to the environment where the toilet apparatus 100 is actually installed, and the reference table which shows the selected threshold value in FIG. Applies to Then, the control unit 210 uses the reference table to determine the approach time T1 or the total time Ttotal as described with reference to FIG. 8, and automatically creates an adaptation table. Since the procedure is the same as that of the first embodiment, the description thereof is omitted. Since the reference table is already adapted to the actual environment to some extent, the user can use the toilet device 100 relatively comfortably even before the creation of the adaptation table shown in FIG.

  [Adaptive table automatic setting], [Adaptive table update], and [Select from a plurality of adaptive tables] may be combined in the second embodiment. Thereby, 2nd Embodiment can acquire the effect similar to 1st Embodiment.

  In the second embodiment, the radio wave sensor 160 can detect the human body by using the determination S / N ratio as a threshold, and can detect the rate of decrease in the user's speed by using the deceleration rate as a threshold. it can. For example, the user may pass through the toilet room 105 without decelerating. In such a case, if only the determination S / N ratio is used as a threshold value, the toilet seat device 110 starts increasing the temperature of the toilet seat unit 140 when the radio wave sensor 160 detects the human body of the user. That is, the toilet seat apparatus 110 performs non-room temperature increase.

  On the other hand, when both the determination S / N ratio and the deceleration rate are used as threshold values as in the second embodiment, the toilet seat device 110 can detect the user's human body even if the radio wave sensor 160 detects the user's human body. If the moving speed does not decelerate below the deceleration rate, the temperature of the toilet seat 140 is not started. As a result, the toilet seat apparatus 110 can effectively eliminate the establishment of the non-entry determination, and can execute the immediate warming control only when the user's probability of entering the room is higher. In this way, by combining a plurality of threshold values, the toilet seat apparatus 110 can make a room entry determination more accurately.

  In the second embodiment, by selecting a threshold value (determination S / N ratio and / or deceleration rate) according to the installation environment of the toilet device 100, power consumption is reduced in the actual installation environment of the toilet device 100. In addition, it is possible to balance the standby temperature of the toilet seat 140 with the frequency of non-entry determination. Thereby, the toilet seat apparatus 110 can raise the temperature of the toilet seat part 140 to target temperature TEMPtrg at the time of a user's seating, and can also reduce the waste of power consumption as much as possible.

  In the time zone in which the user is active as described above, or in the time zone where the frequency of non-entry determination is high, such as at-home time zone, even if the standby temperature TEMPstb is low, useless temperature increase operation by non-entrance determination As a result, power consumption increases. Therefore, when the frequency of non-room determination is high, the frequency of non-room determination can be reduced by changing the threshold value and narrowing the first detection range DR1. When the first detection range DR1 is narrow, the approach time T1 is shortened, so that the standby temperature TEMPstb needs to be increased. However, even if the power consumption increases due to an increase in the standby temperature TEMPstb, the first detection range DR1 is narrowed (approach as long as the power consumption is reduced as a whole by reducing the power consumption by reducing the frequency of non-entry determination) (approach Changing the threshold value so that the time T1 is shortened) leads to a reduction in power consumption.

On the other hand, when it is determined that the frequency of non-entry determination is low, such as a time period when the user is not active or a time period when the user is out, the toilet seat device 110 widens the first detection range DR1 (approach time T1) The threshold value is selected so as to lengthen. In such a time zone, since the frequency of non-entry determination is low, power consumption can be reduced by setting the standby temperature TEMPstb low by increasing the approach time.
As a result, the toilet seat apparatus 110 can rebalance the standby temperature TEMPstb and the frequency of non-entry determination so as to reduce the power consumption with respect to the actual change in the installation environment while achieving the first object. it can.

(Third embodiment)
FIG. 13 is an approach time selection table showing the correspondence between the environmental information (I) to (V) of the toilet seat device 110 according to the third embodiment of the present invention, the threshold value, and the estimated value. In the third embodiment, the user or the contractor selects not only the threshold but also the approach time T1 and / or the total time Ttotal based on environmental information such as the position of the door of the toilet room 105 and the user's approach direction. . Since the reference table and the adaptation table are selected manually by the user or the trader, the toilet seat device 110 according to the third embodiment does not automatically create the adaptation table, unlike the toilet seat device 110 according to the first embodiment. In FIG. 13, the seating time T2 is fixed to a predetermined time (for example, 5 seconds). Therefore, it may be considered that the selection of the approach time T1 is substantially the same as the selection of the total time Ttotal.

  The configuration of the toilet seat device 110 according to the third embodiment may be the same as that of the first embodiment. Moreover, environmental information (I)-(V) respond | corresponds to environmental information (I)-(V) of 2nd Embodiment for convenience. Each environmental information (I) to (V) is as described with reference to FIG. Further, the determination S / N ratio and the deceleration rate as the threshold values are as described with reference to FIG. The approach time selection table further includes a plurality of combinations in which each environment information (I) to (V) is associated with the estimated value of the approach time T1, each environment information (I) to (V) and the estimated seating time T2. A plurality of combinations in which values are associated with each other, a plurality of combinations in which each environment information (I) to (V) is associated with an estimated value of total time Ttotal, and each environment information (I) to (V) and standby A plurality of combinations that correspond to the estimated values of the temperature TEMPstb are stored in the storage unit 214 in advance.

  Accordingly, the user or the contractor selects any one of the environment information (I) to (V) using the function setting unit 132 of the remote operation device 300, so that not only the reference table including the threshold value but also the approach time. An adaptation table including T1, total time Ttotal, and standby temperature TEMPstb is also set.

  In the third embodiment, as with the second embodiment, the position of the door of the toilet room 105 and the user's approach direction are typically considered as environmental information. However, the environment information may include any of the installation environments of the toilet device 110 described above. This is because a more accurate adaptation table can be created by considering more environments. For example, environmental information such as door opening / closing mode, door material, user age, user age and sex, user home time period or absence time period, user sleep time period, threshold value, approach time T1, total time A plurality of combinations corresponding to Ttotal and standby temperature TEMPstb are added to the approach time selection table. Thereby, the adaptation table suitable for the installation environment of the toilet apparatus 100 can be obtained further.

  A specific relationship between environmental information and threshold values will be described. For example, as shown in FIG. 12A (I), when a door is provided in front of the toilet apparatus 100 and the user approaches from the front of the toilet apparatus 100 (the user detects the microwave of the radio wave sensor 160). When approaching in the direction opposite to the transmission direction), the radio wave sensor 160 is relatively easy to detect the user's human body. Therefore, in the environment information (I), the determination S / N ratio can be increased and / or the standby temperature TEMPstb can be set low. When the determination S / N ratio is increased, the frequency of non-entrance determination can be reduced. In this case, the toilet seat apparatus 110 can achieve both avoidance of non-entry determination and reduction of the standby temperature TEMPstb, and can reduce power consumption of the toilet seat apparatus 110.

  On the other hand, a door is provided on the side surface of the toilet apparatus 100 as shown in FIG. 12A (V), and the user approaches from the rear of the toilet room 105 in a direction substantially parallel to the side surface of the toilet room 105 (user When moving in the microwave transmission direction from behind the first detection region DR1), the radio wave sensor 160 is relatively difficult to detect the human body of the user. Therefore, in the environment information (V), it is necessary to make the determination S / N ratio smaller and / or set the standby temperature TEMPstb higher than the environment information (I).

  In this case, by reducing the determination S / N ratio, the human body of the user is detected as soon as possible to increase the total time Ttotal. However, depending on the installation environment of the toilet apparatus 100, the total time Ttotal is relatively short. On the other hand, since the standby temperature TEMPstb is set high, the power consumption of the toilet seat device 110 increases, but the controller 210 can raise the temperature of the toilet seat 140 to the target temperature TEMPtrg in a short total time Ttotal. . In this case, an increase in power consumption of the toilet seat device 110 is necessary to ensure user comfort. That is, the adaptation table in the environment information (V) increases the temperature of the toilet seat at the user's seating time to an appropriate temperature (first purpose) and reduces the standby temperature TEMPstb (second purpose). This is obtained as a result of adapting the balance to the actual installation environment of the toilet device 100.

  When the door is made of a material having good radio wave permeability such as resin, the radio wave sensor 160 is relatively easy to detect the human body of the user. Therefore, in this case, the determination S / N ratio can be increased and / or the standby temperature TEMPstb can be set low. Thereby, the toilet seat apparatus 110 can achieve both avoidance of non-entry determination and reduction of the standby temperature TEMPstb, and can reduce power consumption of the toilet seat apparatus 110.

  On the other hand, when the material of the door is a material having poor radio wave permeability such as metal, the radio wave sensor 160 is relatively difficult to detect the user's human body. Therefore, in this case, it is necessary to make the determination S / N ratio smaller and / or set the standby temperature TEMPstb higher than in the case where the material of the door is a material having good radio wave permeability. Accordingly, a tendency similar to that of the environmental information (V) is obtained. However, the adaptation table in this case also has an actual balance between raising the toilet seat at the user's seating time to an appropriate temperature (first purpose) and reducing the standby temperature TEMPstb (second purpose). This is obtained as a result of adapting to the installation environment of the toilet device 100.

  There may be no door itself. In such a case, the radio wave sensor 160 is relatively easy to detect the user's human body as compared with the case where the door is provided. Therefore, in this case, the determination S / N ratio can be increased and / or the standby temperature TEMPstb can be set lower than when the door is provided. Thereby, the toilet seat apparatus 110 can achieve both avoidance of non-entry determination and reduction of the standby temperature TEMPstb, and can reduce power consumption of the toilet seat apparatus 110.

  When the user is young, the moving speed of the user is relatively fast. That is, the approach time T1 is short. Therefore, when the age of the user is low, it is necessary to decrease the determination S / N ratio and / or set the standby temperature TEMPstb to be high. Accordingly, a tendency similar to that of the environmental information (V) is obtained. However, the adaptation table in this case also has an actual balance between raising the toilet seat at the user's seating time to an appropriate temperature (first purpose) and reducing the standby temperature TEMPstb (second purpose). This is obtained as a result of adapting to the installation environment of the toilet device 100.

  Further, in the user's sleep time zone, the frequency of using the toilet device 100 is low, and the user rarely approaches the toilet room 105 for purposes other than the purpose of using the toilet device 100. Therefore, it can be estimated that it is rare for the user to pass through without entering the room. Therefore, in the user's sleep time zone, the determination S / N ratio can be made smaller and the standby temperature TEMPstb can be set lower than in other time zones.

  Regarding other environmental information, a certain tendency can be estimated between the threshold, the approach time T1, and the standby temperature TEMPstb. By registering these tendencies in the approach time selection table in advance, the toilet seat apparatus 110 balances the non-room determination frequency with the standby temperature so as to reduce the power consumption while achieving the first purpose. Thus, an adaptation table can be set.

  FIG. 14 is a flowchart showing an adaptation table setting procedure according to the third embodiment. If the environmental information has not yet been selected (NO in S400), the toilet seat apparatus 110 performs immediate warming control using a reference table stored in advance in the storage unit 214 (S410). In this case, the control unit 210 reads the reference table from the storage unit 214 and starts the immediate warming control using the reference table. The reference table is as described in the first embodiment.

  When the environmental information is selected based on the environment in which the toilet apparatus 100 is set (YES in S400), the control unit 210 determines that the threshold value corresponding to the selected environmental information, the approach time T1, the sitting time T2, and the total Time Ttotal and standby temperature TEMPstb are obtained from the approach time selection table (S420). Next, the control unit 210 creates an adaptation table from the threshold values obtained from the approach time selection table, approach time T1, seating time T2, total time Ttotal, and standby temperature TEMPstb (S430). For example, when the user or the trader selects the environment information (III) from the approach time selection table shown in FIG. 13, the adaptation table has a determination S / N ratio of 1.3, an approach time T1 of 2 seconds, and a seating time T2. The information includes 5 seconds, 7 seconds as the total time Ttotal, and 25 ° C. as the standby temperature TEMPstb. Here, the target temperature TEMPtrg is fixed at 29 ° C. in advance. And the memory | storage part 214 memorize | stores the produced adaptation table (S440), and the control part 210 starts immediate warming control using an adaptation table (S450).

  In the third embodiment, a user or an operator can select the approach time T1 and the standby temperature TEMPstb from the approach time selection table based on the actual installation environment. Thereby, the standby temperature TEMPstb suitable for the installation environment of the toilet seat apparatus 110 can be set based on the user's preference or the judgment of the operator. As a result, the toilet seat apparatus 110 takes into account the user's preference and the enforcement contractor's preference, achieves the first purpose, and balances the frequency of non-entry determination with the standby temperature so as to reduce power consumption in the installation environment. Can take.

  Depending on the traveling direction when the user approaches the toilet room 105, the movement information of the human body detection by the radio wave sensor 160 changes, and the approach time T1 changes. Therefore, by setting the approach time T1 and the standby temperature TEMPstb based on the traveling direction, the toilet seat apparatus 110 can quickly determine the presence or absence of human body detection by a simple determination method and achieve the first object. Therefore, it is possible to balance the standby temperature and the frequency of non-entry determination so as to reduce power consumption in an actual installation environment.

  Further, the first detection range DR1 varies depending on the form of the house passage, the wall material of the toilet room, etc., and the approach time T1 also changes. Therefore, by setting the approach time T1 and the standby temperature TEMPstb based on the installation environment of the toilet apparatus 100, the toilet seat apparatus 110 achieves the first object and reduces power consumption in the actual installation environment. It is possible to balance the standby temperature with the frequency of non-entry determination.

  As described above, the approach time T1 changes depending on the change in the moving speed of the user. The frequency of non-room entry determination changes depending on the change in the user's home time period, absence time period, or user's sleep time period. The ease of human body detection by the radio wave sensor 160 varies depending on the position of the door in the toilet room 105. When the door of the toilet room 105 is open, the approach time T1 is shorter than when the door is closed. The ease of human body detection by the radio wave sensor 160 varies depending on the extension direction of the passage leading to the toilet room 105. The first detection range DR1 changes due to the difference in the wall material or door material of the toilet room 105, and the approach time T1 also changes.

  Therefore, the toilet seat apparatus 110 achieves the first object and achieves the actual installation environment by inputting the environmental information and setting the threshold value (determination S / N ratio), the approach time T1, and the standby temperature TEMPstb. Therefore, it is possible to balance the standby temperature and the non-entry determination frequency so as to reduce power consumption.

  Note that the approach time selection table in FIG. 13 includes the standby temperature TEMPstb associated with the environment information. However, the standby temperature TEMPstb may be calculated by calculating the approach time T1 selected and corresponding to the environment information. For example, the storage unit 214 stores an arithmetic expression in which the standby temperature TEMPstb is inversely proportional to the approach time T1, and the arithmetic processing unit 212 calculates the standby temperature TEMPstb by applying the selected approach time T1 to this arithmetic expression. May be.

(Fourth embodiment)
FIG. 15 is a flowchart showing a procedure for updating the adaptation table according to the fourth embodiment of the present invention. In the fourth embodiment, the control unit 210 updates the adaptation table when the frequency of non-room determination is high.

  First, the toilet seat apparatus 110 performs immediate warming control using a reference table or an adaptation table. At this time, steps S130 to S195 in FIG. 8 are executed. In the fourth embodiment, when there is no entry detection within the first time limit in step S150 (NO in S150), the counter 218 counts the number of non-entry determinations as shown in parentheses in step S155. Note that the counter 218 need not count the number of times of non-use determination (NO in S170).

  When the number of times of storage in step S195 becomes equal to or greater than a predetermined value (for example, 10 times), the control unit 210 compares the number of entry determinations in the counter 218 with the number of non-entry determinations (S600). When the ratio of the number of times of non-entry determination is equal to or greater than a predetermined value (YES in S600), the control unit 210 changes the adaptation table (S610). For example, when the ratio of the number of times of non-entry determination with respect to the number of stored times becomes 1/2 or more, the control unit 210 changes the adaptation table. In this case, the control unit 210 changes the adaptation table so as to increase the determination S / N ratio in order to reduce the non-entrance determination. Alternatively, the control unit 210 changes the adaptation table so as to increase the deceleration rate in order to reduce the non-room entry determination. A more detailed method for changing the adaptation table will be described later with reference to FIG.

  When the ratio of the number of non-room determinations is lower than the predetermined value (YES in S600), the control unit 210 continues the immediate warming control using the existing adaptation table as it is. The determination value of the ratio of the number of non-entry determinations is stored in the storage unit 214 in advance.

  FIG. 16 is a diagram showing a threshold value change table used for changing the adaptation table in the fourth embodiment. The threshold change table is a table including a threshold before change and a threshold after change corresponding to each of the environment information (I) to (V) described with reference to FIG. The threshold before change is the same as the threshold shown in FIG. The threshold value after change is a value obtained by changing the threshold value before change. For example, the determination S / N ratio after the change is increased with respect to the determination S / N ratio before the change. Thereby, the first detection region DR1 becomes narrower than that before the change. Therefore, the control part 210 can reduce the frequency of non-entry determination. Further, the deceleration rate after the change is also increased with respect to the deceleration rate before the change. In this case, when the movement speed of the user when the radio wave sensor 160 detects the human body is relatively low, the control unit 210 starts the immediate warming control. Therefore, the controller 210 can reduce the frequency of non-entry determination.

  The difference between the threshold value after the change and the threshold value before the change may be a predetermined value, or may be a numerical value proportional to the threshold value before the change. The difference between the determination S / N ratio after the change and the determination S / N ratio before the change (change rate of the determination S / N) may be changed according to the magnitude of the determination S / N ratio before the change. For example, it is preferable to increase the difference between the determination S / N ratio after the change and the determination S / N ratio before the change as the determination S / N ratio before the change is larger. This is because it becomes easy to recognize a change in the frequency of non-entry determination. More specifically, when the determination S / N ratio is large and the difference between the determination S / N ratio after the change and the determination S / N ratio before the change is small (when the change rate is small), the non-room determination is made There is little change in frequency. Therefore, the effect of reducing the frequency of non-entry determination before and after the threshold change is small. However, when the determination S / N ratio is small, the change rate increases even if the difference between the determination S / N ratio after the change and the determination S / N ratio before the change is small. Change will be greater. Therefore, the effect of reducing the frequency of non-entry determination before and after the threshold change is great. It can be said that the frequency of the non-entry determination before and after the change is the same as the determination S / N ratio with respect to the deceleration rate.

  Conversely, when the frequency of non-room determination is very low, the determination S / N ratio may be decreased and / or the deceleration rate may be increased. Thereby, although possibility of non-entry determination increases, approach time T1 can be lengthened and standby temperature TEMPstb can be reduced.

  Thus, according to the fourth embodiment, by selecting a threshold value (determination S / N ratio and / or deceleration rate) suitable for the installation environment, the first detection range DR1 spreads suitable for the installation environment. become. Thereby, the toilet seat apparatus 110 can obtain the approach time T1 suitable for the installation environment, and can obtain the standby temperature TEMPstb suitable for the installation environment based on the approach time T1. In addition, by selecting a threshold value suitable for the installation environment, the approach time T1 can be made as long as possible while reducing the frequency of non-entry determination. As a result, the toilet seat apparatus 110 can balance the standby temperature and the frequency of non-entry determination so as to reduce the power consumption in the actual installation environment while achieving the first object.

  More specifically, when the frequency of non-room entry determination is high, useless power consumption increases even when the standby temperature TEMPstb is low. Therefore, when the frequency of non-entrance determination is high, the frequency of non-entrance determination can be reduced by changing the threshold and narrowing the first detection range DR1 (shortening the approach time T1). When the first detection range DR1 is narrow, the approach time T1 is shortened, so that the standby temperature TEMPstb needs to be increased. However, even if the power consumption increases due to an increase in the standby temperature TEMPstb, the first detection range DR1 is narrowed as long as the power consumption decreases as a whole due to the reduction in power consumption due to the reduction in the frequency of non-entry determination (approach) Changing the threshold so as to shorten the time leads to a reduction in power consumption.

  Therefore, the toilet seat apparatus 110 balances the non-entry determination frequency and the standby temperature so as to reduce the power consumption while achieving the first object by changing the threshold value so as to suit the installation environment. Can do.

  In the above embodiment, balancing the non-room determination frequency and the standby temperature so as to reduce the power consumption while achieving the first object is to improve the user's feeling of use and reduce the power consumption. Is important to. For example, raising the temperature of the toilet seat 140 when the user is seated to the target temperature TEMPtrg including the exceptional case (when the user runs into the toilet room 105, etc.) completely achieves the first purpose. it can. However, it is necessary to make the determination S / N ratio very small in order to make the standby temperature TEMPstb very high or to make the approach time T1 long. This increases wasteful power consumption and increases the frequency of non-room determination.

  On the other hand, if only focusing on reducing the power consumption, in most cases, the temperature of the toilet seat 140 cannot be raised to the target temperature TEMPtrg when the user is using it. That is, the first purpose is not achieved.

  Therefore, it is important to determine an adaptation table such as the approach time t1, the threshold value, and the standby temperature TEMPstb so as to reduce power consumption as much as possible while achieving the first object in normal use. This means that the non-room determination frequency and the standby temperature are balanced so as to reduce the power consumption while achieving the first object.

(Fifth embodiment: temperature rise stop)
FIG. 17 is a flowchart showing immediate warming control of the toilet seat apparatus 110 according to the fifth embodiment. In this immediate warming control, the toilet seat device 110 is used when the user does not enter the toilet room 105 (non-entry determination), and when the user does not use the toilet seat 140 even when the user enters the toilet room 105 ( In the nonuse determination), the temperature raising operation of the toilet seat 140 is stopped or the heating of the toilet seat 140 is suppressed. Further, in the fifth embodiment, the toilet seat device 110 determines the temperature rise condition at the time of detecting the human body by the radio wave sensor 160, and the case where the temperature rise condition is not satisfied, and the probability of non-room entry is high (non-room entry) When the estimation is established), the temperature raising operation of the toilet seat 140 is suppressed or the temperature raising operation is not started. The immediate warming control is a standby state in which the user waits for use and maintains the temperature of the toilet seat 140 at the standby temperature TEMPstb. And control including temperature operation.

  With reference to FIG. 17, the operation of the immediate warming control according to the fifth embodiment will be described in detail. First, the control unit 210 reads the reference table or the adaptation table from the storage unit 214, and starts immediate warming control (S1000). The storage unit 214 may store a plurality of reference tables or adaptation tables, and the control unit 210 may select one reference table or adaptation table from a plurality of reference tables or a plurality of adaptation tables.

Until the radio wave sensor 160 detects the human body of the user, the toilet seat device 110 maintains the standby state (S1010). When radio wave sensor 160 detects the human body of the user (YES in S1020), control unit 210 performs a temperature rise determination (S1030).
FIG. 18 is a flowchart showing a subroutine for determining a temperature rise. The temperature rise determination is an operation that is started with the detection of the human body by the radio wave sensor 160 as a trigger and determines whether or not the temperature raising operation of the toilet seat 140 is executed. The temperature detector 144 measures the temperature of the toilet seat 140 at that time (hereinafter, toilet seat temperature), and the controller 210 compares the toilet seat temperature TEMPts with the target temperature TEMPtrg (S1031). When the toilet seat temperature TEMPts is higher than the target temperature TEMPtrg (YES in S1031), there is no need to raise the temperature of the toilet seat 140, and therefore the controller 210 makes the temperature rise determination NO. For example, in summer, the toilet seat temperature TEMPts may already exceed the target temperature TEMPtrg. In such a case, the control unit 210 makes the temperature increase determination NO so that the temperature increase operation is not executed.

  When the toilet seat temperature is lower than the target temperature (NO in S1031), the control unit 210 compares the moving speed Vi of the user with the predetermined speed V1 (S1032). The moving speed Vi of the user is the initial speed of the user at the human body detection time point t0 in FIG. 3 and can be detected by the radio wave sensor 160. The movement speed Vi may be rephrased as the user's entry speed into the first detection region DR1. The predetermined speed V1 is preset and stored in the storage unit 214.

  When the user enters the toilet room 105, it can be estimated that the moving speed of the user normally enters the first detection region DR1 at a relatively slow speed because the user decelerates or stops before the door 107. On the other hand, since a user who does not use the toilet device 100 usually passes the toilet room 105, it can be estimated that the user enters the first detection region DR1 at a relatively high speed. Of course, even if the moving speed is low, the user may not enter the toilet room 105. However, in such a case, the control part 210 should just perform temperature rising determination by other determination conditions (S1033-S1035). Accordingly, in step S1031, the control unit 210 detects that the user is not in the room when the moving speed Vi is a speed that is clearly estimated to pass the toilet room 105, for example, a constant speed or an acceleration. The temperature rise determination may be set to NO by determining that the probability is high (that is, non-room estimation is established). That is, the predetermined speed V1 is set in advance on the assumption that the user clearly passes the toilet room 105.

In an exceptional case such as when the user rushes into the toilet room 105, the control unit 210 may make the temperature rise determination NO. However, in such an exceptional case, even if the temperature raising operation is started, the controller 210 does not raise the temperature of the toilet seat 140 to the target temperature TEMPtrg at the time t2 when the user is seated. There is a high possibility of not being able to. Therefore, the predetermined speed V1 may be set without considering an exceptional case such as when the user runs into the toilet room 105. That is, V1 may be set to a speed equal to or slightly faster than the general user's walking speed.
When the moving speed Vi is equal to or higher than the predetermined speed V1, the control unit 210 makes a temperature increase determination NO so that the temperature increase operation is not performed. Thus, by detecting the moving speed of the human body, the control unit 210 can determine the non-entrance of the user with a high probability. Thereby, the toilet seat apparatus 110 can suppress or prevent useless boosting operation and reduce useless power consumption.

  When the moving speed Vi is less than the predetermined speed V1, the control unit 210 determines the frequency of human body detection by the radio wave sensor 160 (S1033). More specifically, the counter 218 counts the number n of times that the radio wave sensor 160 has detected a human body in the past unit time Tu. The interval at which the human body detection is counted is, for example, once every heating time t seconds for heating the toilet seat from the standby temperature to the target temperature, and the unit time Tu is a multiple of t. The storage unit 214 stores a preset threshold number N and unit time Tu. When the human body detection frequency n is larger than the threshold frequency N, the control unit 210 determines that the human body detection frequency is “large” (YES in S1033). When the human body detection frequency is high, the user is likely to go around the toilet room 105. In this case, there is a high probability of non-entry (that is, non-entry estimation is established).

  FIGS. 19A and 19B are tables showing the number of human body detections, the number of non-entry determinations, the human body detection frequency, and the non-entry determination frequency in past unit times, respectively. For example, as shown in FIG. 19A, it is assumed that the unit time Tu is 3 minutes and the threshold number N is 2. The controller 210 determines that the human body detection frequency is “small” when the human body detection frequency n in the past 3 minutes is less than 2, and detects the human body detection when the human body detection frequency n in the past 3 minutes is 2 or more. The frequency is determined as “large”. Further, for example, as shown in FIG. 19B, it is assumed that the unit time Tu is 1 minute and the threshold number N is 1. The controller 210 determines that the human body detection frequency is “small” when the human body detection frequency n in the past minute is 0, and the human body detection frequency when the human body detection frequency n in the past minute is 1 or more. Is determined to be “large”.

  Instead of the method of FIG. 19A and FIG. 19B, the control unit 210 may determine the human body detection frequency based on the human body detection time interval of the radio wave sensor 160. For example, the timer 216 measures a time interval from a certain human body detection time point to the next human body detection time point. The controller 210 compares the minimum time interval among the time intervals within the unit time with a predetermined interval set in advance. When the minimum time interval is less than the predetermined interval, the control unit 210 determines that the human body detection frequency in the unit time is “large”. When the minimum time interval is equal to or greater than the predetermined interval, the control unit 210 determines that the human body detection frequency in the unit time is “small”. In step S1033 and / or S1036, the control unit 210 may use the human body detection frequency based on such a time interval.

  If the human body detection frequency is high (YES in S1033), there is a high possibility of non-entry (non-entry estimation is established), and the control unit 210 makes the temperature rise determination NO.

  Thus, when the human body detection frequency is high within the past unit time, it can be estimated that the user frequently goes around the toilet room 105 during that period. Under such circumstances, when the radio wave sensor 160 detects a human body, it is determined that the user has a high probability of non-entry (that is, non-entry estimation is established), and the temperature rise determination is NO. Thus, the temperature raising operation of the toilet seat can be prevented, and as a result, the toilet seat device 110 can suppress wasteful power consumption.

  When the human body detection frequency is “small” (NO in S1033), the control unit 210 determines whether or not it is a time zone in which the frequency of non-entry determination is high (S1037).

  FIG. 20 is a table showing the number of human body detections, the number of non-entry determinations, the human body detection frequency, and the non-entry determination frequency in the hourly hour period. The table in FIG. 20 shows that the counter 218 counts the number n of human body detections and the number m of non-entry determinations per unit time (for example, 1 hour) during a certain periodic period (for example, 1 day, 1 week). Created by counting. In the creation period of this table, the control unit 210 compares the human body detection frequency n with the threshold frequency N, and determines the human body detection frequency (large or small) for each time zone. The storage unit 214 stores the determination result by the control unit 210. For example, when the human body detection number n is less than the threshold number N, the storage unit 214 stores data indicating “small” as the human body detection frequency in association with the corresponding time zone. When the human body detection frequency n is equal to or greater than the threshold frequency N, the storage unit 214 stores data indicating “large” as the human body detection frequency in association with the corresponding time zone.

  Moreover, the control part 210 compares the ratio (m / n) of the non-entry determination frequency m with respect to the human body detection frequency n with the threshold ratio R, and determines the non-entrance determination frequency (large or small) for each time zone. The storage unit 214 stores the determination result by the control unit 210. For example, when the ratio (m / n) is less than the threshold ratio R, the storage unit 214 stores data indicating “small” as the non-entrance determination frequency in association with the corresponding time zone. When the human body detection count n is equal to or greater than the threshold count N, the storage unit 214 stores data indicating “large” as the non-entry determination frequency in association with the corresponding time zone. Note that the threshold number N and the threshold ratio R are preset and stored in the storage unit 214. In practice, the counter 218 counts the number n of human body detections and the number of room detections (nm), and the arithmetic processing unit 212 subtracts the number of room detections (nm) from the number of human body detections n. The non-room determination number m can be calculated. The number of entry detections (nm) is the number of times the user actually entered the room.

  In the specific example of FIG. 20, the threshold number N of the human body detection frequency is 4. Therefore, a time zone in which the human body detection frequency n is less than 4 is set as a time zone in which the human body detection frequency is low. The time zone in which the human body detection frequency n is 4 or more is set as a time zone in which the human body detection frequency is high. Further, the threshold ratio R of the non-entry determination frequency is set to 50%. Therefore, a time zone in which the ratio (m / n) of the non-room determination number m to the human body detection frequency n is less than 50% is set as a time zone where the non-room determination frequency is low. A time zone in which the ratio (m / n) of the non-occupancy determination frequency m to the human body detection frequency n is a threshold ratio of 50% or more is set as a time zone where the non-entrance determination frequency is high. This setting is executed in advance by the control unit 210, and the data in FIG.

  In the subsequent cycles (for example, days), the control unit 210 determines the human body detection frequency and the non-room determination frequency using the table of FIG. For example, when the time of the timer 216 belongs to a time zone with a low human body detection frequency (YES in S1036), the control unit 210 executes steps S1034 and S1035. Of course, in the time zone in which the human body detection frequency is low, the frequency with which the radio wave sensor 160 detects the user's human body is low. Therefore, when the user's human body is detected during such a time period, the control unit 210 increases the determination S / N ratio in order to confirm whether or not the user really exists in the vicinity of the toilet room 105. Thereby, the erroneous human body detection by noise etc. can be suppressed.

  When the time of the timer 216 belongs to a time zone having a high non-entry determination frequency (YES in S1037), the control unit 210 determines that the detected user has a high probability of non-entry (that is, non-entry estimation is established). Thus, the temperature rise determination is NO. As described above, the user usually lives in a certain cycle such as every day or every week. For this reason, the time zone with frequent non-entry determination frequency and the time zone with little frequency are also roughly decided in one day. Therefore, even if the dates are different, it can be estimated that the frequency of non-entry determination is high in the time zone where the frequency of non-entrance determination is high. Therefore, in such a time zone where the non-entry determination frequency is high, it is possible to prevent the temperature increase operation of the toilet seat from being performed by determining that the non-entry estimation is established. Wasteful power consumption can be suppressed.

  When the time of timer 216 belongs to a time zone with a low non-entry estimated frequency (NO in S1037), control unit 210 determines that the temperature increase determination is established.

  As described above, the fifth embodiment has a higher probability that the user is not in the room when the user is detected in S1020 by the combination of the determinations in steps S1032 to S1037 (estimation of non-room entry). Can be sure. When the temperature rise determination is performed at or before the start of heating of the toilet seat part 140, when the possibility of the user not entering the room is high, the control unit 210 does not start heating the toilet seat part 140, Alternatively, it can be suppressed. Thereby, the toilet seat apparatus 110 according to the fifth embodiment can eliminate or reduce unnecessary power consumption at the time of non-entry estimation.

  Reference is again made to FIG. When the temperature increase determination is YES (YES in S1030), the toilet seat apparatus 110 starts a temperature increase operation (S1040). At the same time, the timer 216 starts measuring time (S1050). When the temperature increase determination is NO (NO in S1030), the toilet seat device 110 raises the temperature of the toilet seat 140 without performing the temperature increase operation or at a low temperature increase rate. At the same time, the timer 216 starts measuring time (S1050). This is because when the temperature increase determination is NO, there is no need for a temperature increase operation or there is a high possibility that the user will not enter the room. In order to make the rate of temperature rise to zero, the controller 210 does not have to pass a current through the heater 142. In order to decrease the temperature increase rate, the control unit 210 may decrease the temperature increase performance (current or the number of heaters) of the heater 142. Furthermore, when the temperature raising operation is managed by time (temperature raising time), the controller 210 may set the temperature raising time to zero or shorten the temperature raising time.

  Next, the control unit 210 determines non-entry determination (S1060).

  FIG. 21 is a flowchart showing a non-entry determination subroutine. First, the radio wave sensor 160 detects the separation of the user (S1061). When the user does not enter the toilet room 105, the user moves away from the toilet room 105 after entering the first detection region DR1 (human body detection). The radio wave sensor 106 can detect the moving speed of the user by using the Doppler effect based on the frequency of the radio wave. That is, the radio wave sensor 160 can detect the separation of the user. Therefore, when the control unit 160 detects the user's separation after detecting the user's human body (YES in S1061), it is assumed that the non-room determination is established.

  At this time, the control unit 210 makes the non-entry determination when the moving speed of the user hardly decelerates from the initial speed Vi at the time of detecting the human body within a predetermined time (when the moving speed is substantially maintained at the initial speed Vi). It may be determined that it is established. Alternatively, the control unit 210 may determine that the non-entry determination is satisfied when the moving speed of the user is equal to or higher than a predetermined speed (for example, Vi × 0.8) when a predetermined time has elapsed since the human body was detected. Good. The predetermined speed is a speed determined based on the initial speed Vi, and may be a speed obtained by multiplying the initial speed Vi by a predetermined rate (less than 1 (here, 0.8)). Further, the control unit 210 determines that if the movement speed of the user once increases and then increases again, that is, if the movement speed of the user has a minimum value within a predetermined time after the human body is detected. You may determine with entrance determination being materialized. In this case, the voltage or frequency of the reflected wave of the radio wave has a maximum value. Therefore, when the voltage or frequency of the reflected wave of the radio wave has a maximum value within a predetermined time after the human body is detected, the control unit 210 may determine that the non-entry determination is satisfied. Note that the predetermined period of step S1061 is defined in step S1065.

  As described above, the radio wave sensor 160 can determine the non-entrance determination at an early stage when the user starts to leave the toilet seat device 110 by detecting the separation of the user. Thereby, the toilet seat apparatus 110 can reduce useless power consumption by determining the non-entry of the user at an early stage and suppressing (or stopping) the useless heating operation in the middle.

  If the separation of the user is not detected after detecting the human body (NO in S1061), the radio wave sensor 160 detects the opening / closing of the door 107 (S1062). Normally, if the user's separation is not detected, it can be assumed that the user opens the door 107 in order to enter the toilet room 105. However, there is a possibility that the user may pass through the toilet room 105 without entering the toilet room 105 even though the user has stopped in front of the door 107. In such a case, the radio wave sensor 160 may not be able to detect the user's separation. Therefore, by detecting opening / closing of the door 107, the control unit 210 determines whether the user has entered the room (S1062).

  When the radio wave sensor 160 detects opening / closing of the door 107 within a predetermined time from the start of temperature increase (YES in S1062), the control unit 210 determines that the user has entered the toilet room 105 and starts the temperature increase operation. (S1064). That is, the control unit 210 determines that the non-entry determination is not satisfied. Note that the predetermined time in step S1062 is defined in step S1065.

  On the other hand, as indicated by a broken line in FIG. 21, when radio wave sensor 160 does not detect opening / closing of door 107 within a predetermined time from the start of temperature increase (NO in S1062), control unit 210 establishes a non-room entry determination. You may judge that. The radio wave sensor 160 can detect the movement of the door of the toilet room 105, and the radio wave sensor 160 can determine whether the user has entered the toilet room 105 by detecting the opening and closing of the door. That is, the toilet seat apparatus 110 can determine non-entry determination based on opening / closing of the door. Thereby, the toilet seat apparatus 110 can reduce useless power consumption by determining the non-entry of the user at an early stage and suppressing (or stopping) the useless heating operation in the middle.

  Alternatively, if the radio wave sensor 160 does not detect opening / closing of the door 107 within a predetermined time from the start of temperature increase (NO in S1062), the pyroelectric sensor 170 continues to detect the user entering (or not entering). Good (S1063). For example, when the door 107 is left open, the user may enter the Torre room 105 even though the radio wave sensor 160 does not detect the opening / closing of the door 107. Therefore, even if the radio wave sensor 160 does not detect the opening / closing of the door 107, it is effective that the pyroelectric sensor 170 detects the user's entry. When the pyroelectric sensor 170 detects that the user has entered the room (YES in S1063), the controller 210 starts a temperature raising operation (S1064) and determines that the non-room entry determination is not satisfied. Note that the predetermined time in step S1063 is defined in step S1065.

  On the other hand, when the pyroelectric sensor 170 does not detect the user's entry (NO in S1063), the control unit 210 determines whether or not the time of the timer 216 that started timing in step S1050 is equal to or longer than a predetermined time (S1065). ). This predetermined time is a time not less than the approach time T1 and not more than the total time Ttotal, and may be a value (Ttotal × 0.8> T1) obtained by multiplying the total time Ttotal by a predetermined ratio (for example, 0.8), for example. In the adaptation table, the approach time T1 and the total time Ttotal are determined based on actually measured values. Accordingly, in order to determine whether or not the non-entry determination is satisfied with the passage of time, the toilet seat apparatus 110 needs to wait for at least the approach time T1 set based on the actually measured value. In addition, if the user does not enter even when the total time Ttotal set based on the actual measurement value has elapsed, the user is not likely to enter the room. Therefore, if the user does not enter the room when the total time Ttotal has elapsed, the toilet seat apparatus 110 may determine that the non-entry determination is satisfied. Thus, the predetermined time may be any time point from the approach time T1 to the total time Ttotal. Thereby, the toilet seat apparatus 110 can judge non-entrance determination more reliably, and can reduce useless power consumption. Therefore, when the time of timer 216 is equal to or longer than the predetermined time (YES in S1065), control unit 210 determines that the non-entry determination is satisfied. On the other hand, when the time of timer 216 is less than the predetermined time (NO in S1065), control unit 210 repeats steps S1061 to S1063 until the time of timer 216 reaches the predetermined time or more. Thus, a predetermined period for determining steps S1061 to S1063 can be defined by step S1065.

  Reference is again made to FIG. When the non-entry determination is established (YES in S1060), control unit 210 stops the temperature increase started in step S1040 (S1070). At this time, the timer 216 stops timing and resets the timing. The counter 218 counts up the number of non-entry determinations, and the storage unit 214 stores the number of non-entry determinations. Then, the toilet seat apparatus 110 returns to the standby state (S1010). Thereby, the toilet seat apparatus 110 by this embodiment can reduce power consumption by interrupting useless temperature rising operation in the middle and returning to a standby state, when non-entry determination is materialized. As described above, when the non-entry determination is established, the control unit 210 suppresses (or stops) heating of the toilet seat 140 by suppressing (or stopping) energization of the heater 142. Thereby, the toilet seat apparatus 110 can suppress (or stop) useless temperature rising operation on the way, and can reduce useless power consumption.

  When the non-entry determination is not satisfied (NO in S1060), the control unit 210 determines non-use determination (S1080). Even if the user enters the toilet room 105, the user may leave the toilet room 105 without using the toilet apparatus 100. In step S1060, it may be determined that the non-entry determination is not established even though the user has not entered the room (YES in S1062). Therefore, the control unit 210 determines not only the non-entry determination but also the non-use determination of the toilet seat device 110. If the temperature increase determination is not satisfied in step S1030 (NO in S1030), control unit 210 may start the temperature increase operation when it is determined that the non-room entry determination is not satisfied (NO in S1060). Good.

  FIG. 22 is a flowchart showing a non-use determination subroutine. First, when the seating sensor 180 detects the seating of the user (YES in S1081), the toilet seat device 110 is used by the user. For this reason, the control part 210 determines with non-use determination not being materialized.

  On the other hand, when the seating sensor 180 does not detect the seating of the user (NO in S1081), the control unit 210 determines whether or not the time of the timer 216 that started timing in step S1050 is equal to or longer than a predetermined time (S1082). Even when the user enters the toilet room 105 as in a urination, the user does not necessarily use the toilet seat device 110. Therefore, when the control unit 210 does not detect the seating of the user within a predetermined time after the temperature rise of the toilet seat unit 140 is started, the user is highly likely not to use the toilet seat device 110. In such a case, the control unit 210 determines that the non-use determination is established. Thereby, the toilet seat apparatus 110 can interrupt useless temperature rising operation on the way, and can reduce power consumption.

  In order to determine whether or not the non-use determination is satisfied with the passage of time, the toilet seat apparatus 110 needs to wait for the passage of the total time Ttotal set based on at least the actual measurement value. Accordingly, the predetermined time in step S1082 is preferably set to a time sufficiently longer than the total time Ttotal. For example, the predetermined time is a time equal to or longer than the total time Ttotal, and may be a value twice the total time Ttotal.

  When the time of the timer 216 is equal to or longer than the predetermined time (YES in S1082), the control unit 210 determines that the non-use determination is established. On the other hand, when the time of timer 216 is less than the predetermined time (NO in S1082), control unit 210 repeats step S1081 until the time of timer 216 becomes equal to or longer than the predetermined time. Thus, by determining the non-use determination after the predetermined time has elapsed, the non-use determination can be more reliably performed, and wasteful power consumption can be reduced.

  Reference is again made to FIG. When the non-use determination is established (YES in S1080), control unit 210 stops the temperature increase started in step S1040 (S1090). At this time, the timer 216 stops timing and resets the timing. The counter 218 counts up the number of times of non-use determination, and the storage unit 214 stores the number of times of non-use determination. Then, the process returns to the standby state (S1010). Thereby, the toilet seat apparatus 110 by this embodiment can reduce power consumption by interrupting useless temperature rising operation in the middle and returning to a standby state, when non-use determination is materialized.

  When the non-use determination is not satisfied (NO in S1080), the control unit 210 compares the toilet seat temperature TEMPts with the target temperature TEMPtrg (S1100). When the toilet seat temperature TEMPts is lower than the set temperature TEMPset (NO in S1100), the toilet seat device 110 continues the temperature raising operation. When the toilet seat temperature TEMPts is equal to or higher than the set temperature TEMPset (YES in S1100), the toilet seat device 110 stops the temperature raising operation (S1110). At this time, the timer 216 stops timing and resets the timing.

  Next, the control unit 210 performs heat insulation control of the toilet seat unit 140 (S1120).

  FIG. 23 is a flowchart showing a subroutine for heat insulation control. First, the controller 210 compares the temperature TEMPts of the toilet seat 140 with the set temperature TEMPset (S1121). When the toilet seat temperature TEMPts is 1 ° C. or more lower than the set temperature TEMPset (YES in S1121), the control unit 210 turns on the heater 142 and starts the temperature raising operation (S1122). Thereby, the toilet seat apparatus 110 can raise the toilet seat temperature TEMPts to preset temperature TEMPset. Note that the temperature rise performance of the heater 142 during the heat retention control may be lower than the temperature rise performance in the temperature raising operation from the standby temperature TEMPstb to the target temperature TEMPtrg. For example, the temperature increase performance in the temperature increase operation from the standby temperature TEMPstb to the target temperature TEMPtrg is 200 Wh, whereas the temperature increase performance of the heater 142 during the heat retention control may be 50 Wh.

  Thereafter, the control unit 210 determines whether or not the user has finished using the toilet seat device 110 (S1125). The end of use can be determined by human body detection using the seating sensor 180. When the use of the toilet seat apparatus 110 is finished (YES in S1125), the process returns to the main routine of FIG. On the other hand, when the use of the toilet seat apparatus 110 has not been finished yet (NO in S1125), Step S1121 and the subsequent steps are executed again.

  When the toilet seat temperature TEMPts is higher than (TEMPset-1 ° C.) (NO in S1121), the control unit 210 simply compares the toilet seat temperature TEMPts with the set temperature TEMPset (S1123). When the toilet seat temperature TEMPts is lower than the set temperature TEMPset (NO in S1123), the control unit 210 executes Step S1125. That is, step S1121 and subsequent steps are repeated until the use of the toilet seat device 110 is completed.

  On the other hand, when the toilet seat temperature TEMPts is higher than the set temperature TEMPset (YES in S1123), the controller 210 turns off the heater 142 and stops the temperature raising operation (S1124), and then executes Step S1125.

  Thereby, when the toilet seat temperature TEMPts is lower than the set temperature TEMPset-1 ° C., the toilet seat device 110 performs a temperature increasing operation, and when the toilet seat temperature TEMPts becomes higher than the set temperature TEMPset, the toilet seat device. 110 stops the temperature raising operation. When the toilet seat temperature TEMPts is between TEMPset and (TEMPset-1 ° C.), the toilet seat device 110 maintains a state where the temperature raising operation is performed or stopped. Thereby, the temperature TEMPts of the toilet seat 140 is maintained between TEMPset and (TEMPset-1 ° C.).

  After use, as shown in FIG. 17, the toilet seat device 110 returns to the standby state.

  FIG. 24 is a flowchart showing a subroutine for standby control of the toilet seat apparatus 110. First, the controller 210 compares the temperature TEMPts of the toilet seat 140 with the standby temperature TEMPstb (S1011). When the toilet seat temperature TEMPts is equal to or lower than (TEMPset-1 ° C.) (YES in S1011), the control unit 210 turns on the heater 142 and starts the temperature raising operation (S1012). As a result, the toilet seat device 110 can raise the toilet seat temperature TEMPts to the standby temperature TEMPstb. Note that the temperature rise performance of the heater 142 during the standby control may be lower than the temperature rise performance in the temperature raising operation from the standby temperature TEMPstb to the target temperature TEMPtrg. For example, the temperature increase performance in the temperature increase operation from the standby temperature TEMPstb to the target temperature TEMPtrg is 200 Wh, whereas the temperature increase performance of the heater 142 during the standby control may be 50 Wh. Thereafter, the process returns to the main routine of FIG.

  When the toilet seat temperature TEMPts is higher than (TEMPstb-1 ° C.) (NO in S1011), the control unit 210 simply compares the toilet seat temperature TEMPts with the standby temperature TEMPstb (S1013). When the toilet seat temperature TEMPts is lower than the standby temperature TEMPstb (NO in S1013), the control unit 210 returns to the main routine of FIG.

  On the other hand, when the toilet seat temperature TEMPts is higher than the standby temperature TEMPstb (YES in S1013), the control unit 210 turns off the heater 142 and stops the temperature raising operation (S1014). Return to the main routine.

  Thus, when the toilet seat temperature TEMPts is equal to or lower than (TEMPstb-1 ° C.), the toilet seat device 110 performs a temperature raising operation, and when the toilet seat temperature TEMPts becomes higher than the standby temperature TEMPstb, the toilet seat device 110 Stops the temperature raising operation. When the toilet seat temperature TEMPts is between TEMPstb and (TEMPstb-1 ° C.), the toilet seat device 110 maintains a state where the temperature raising operation is performed or stopped. Accordingly, the temperature TEMPts of the toilet seat 140 is maintained between TEMPstb and (TEMPstb-1 ° C.).

  As described above, the toilet seat device 110 according to the present embodiment detects the user before the user enters the room and starts the temperature raising operation. Thus, since the temperature raising operation is performed before the user enters the room, the total time Ttotal can be made longer than before. As a result, the toilet seat device 110 can sufficiently heat the toilet seat 140 to the target temperature TEMPtrg. On the other hand, if the user is detected before entering the room, the user may not actually enter the room or may not actually use the toilet seat 140. When the non-entry determination and the non-use determination are thus established, the toilet seat device 110 according to the present embodiment suppresses (or stops) heating of the toilet seat 140 by suppressing (or stopping) energization of the heater 142. . Thereby, useless temperature rising operation can be suppressed (or stopped) on the way, and useless power consumption can be reduced.

  In the present embodiment, the control unit 210 determines non-entry determination based on radio waves (for example, microwaves) from the radio wave sensor 160. Since the radio wave sensor 160 can detect the movement of the human body, it can be detected at an early stage that the user does not enter the toilet room 105. Thereby, it is possible to reduce useless power consumption by determining non-entry determination at an early stage and suppressing (or stopping) a useless temperature rising operation in the middle.

  The control unit 160 determines that the non-room entry determination is established when the user's separation is detected after the user's human body is detected (YES in S1061). Thereby, the toilet seat apparatus 110 by this embodiment can reduce useless power consumption by judging a user's non-entry early and suppressing (or stopping) useless temperature rising operation on the way.

  Even if the radio wave sensor 160 detects a human body, if the opening / closing of the door 107 of the toilet room 105 is not detected within a predetermined time (NO in S1062), the user is likely not to enter the toilet room 105. Therefore, the control unit 210 can determine the non-entry determination based on the opening / closing of the door 107. Thereby, the toilet seat apparatus 110 by this embodiment can reduce useless power consumption by judging a user's non-entry early and suppressing (or stopping) useless temperature rising operation on the way.

  Even if the radio wave sensor 160 detects a human body, if the pyroelectric sensor 170 does not detect the user's entry within a predetermined time (S1063), the user is highly likely not to enter the toilet room 105. Therefore, the control unit 210 can determine the non-entry determination based on the entry detection of the pyroelectric sensor 170. Thereby, the toilet seat apparatus 110 by this embodiment can reduce useless power consumption by judging a user's non-entry early and suppressing (or stopping) useless temperature rising operation on the way.

  In addition, the toilet seat apparatus 110 can more reliably determine the non-entry determination by combining the user separation detection (S1061), the door opening / closing detection (S1062), and the user entry detection (S1063).

  The period for determining the user separation detection (S1061), the door opening / closing detection (S1062), and the user entry detection (S1063) is a period of a predetermined time from the start of timing in step S1050. This predetermined time is a time not shorter than the approach time T1 and not longer than the total time Ttotal. In order to determine whether or not the non-entry determination is satisfied, the toilet seat apparatus 110 needs to wait for at least the approach time T1 set based on the actually measured value to elapse. In addition, even when the total time Ttotal has elapsed (when the user is estimated to be seated), if the user does not yet enter the room, there is a high possibility that the user will not enter the room. Therefore, the predetermined time may be any time point from the approach time to the total time. Thereby, the toilet seat apparatus can make non-room entry determination more reliable and reduce wasteful power consumption.

  According to the present embodiment, when the sensor unit 150 does not detect the seating of the user within a predetermined time after the heating of the toilet seat unit 140 is started, the control unit 210 determines that the non-use determination is established (FIG. 22). Even when the user enters the toilet room, such as during urination, the toilet seat device 110 is not necessarily used. Therefore, when the control unit 210 does not detect the seating of the user within a predetermined time after the temperature rise of the toilet seat unit 140 is started, the user is highly likely not to use the toilet seat device 110. In such a case, the control unit 210 determines that the non-use determination is established. Thereby, the toilet seat apparatus 210 can interrupt useless temperature rising operation on the way, and can reduce power consumption.

  In addition, when the toilet seat device 110 according to the present embodiment determines that the probability that the user does not enter the toilet room 105 is high when the user's human body is detected (non-entry estimation is established), the temperature raising operation is not started. Or it suppresses (S1030). As described above, when the temperature rise determination is performed at or before the start of the temperature raising operation, the control unit 210 does not start heating the toilet seat 140 when the possibility of the user not entering the room is high, or Can be suppressed. Thereby, the toilet seat apparatus 110 can eliminate or reduce wasteful power consumption when the probability of non-room entry is high.

  The predetermined time in step S1080 is preferably equal to or greater than the total time Ttotal. In order to determine whether the non-use determination is satisfied, the toilet seat device 110 needs to wait for the elapse of the total time Ttotal set based on at least the actually measured value. By determining the non-use determination after the elapse of the total time Ttotal, the non-use determination can be made more reliable.

  When the moving speed Vi of the user at the human body detection time point t0 is equal to or higher than the predetermined speed V1, the control unit 210 estimates non-entry (S1032). When the user enters the toilet room, it can be assumed that the user normally enters the first detection region DR1 at a relatively slow speed because the user stops before the door. On the other hand, since a user who does not enter the toilet room 105 passes through the toilet room 105, it can be estimated that the user normally enters the first detection region DR1 at a relatively high speed. Therefore, when the initial speed when the user enters the first detection range DR1 is equal to or higher than the predetermined speed, the control unit 210 determines that the temperature increase determination is not satisfied. Thereby, the control part 210 can determine a user's non-entrance with high possibility. As a result, the toilet seat apparatus 210 can suppress useless boosting operations and reduce power consumption.

  When the human body detection frequency is high in a certain unit time, the control unit 210 estimates the non-entry of the user (S1033). Although it depends on the unit time, a healthy user cannot use the toilet seat device 110 many times in a few minutes. Therefore, when the human body detection frequency is high in the most recent unit time, it can be estimated that the user frequently travels in the vicinity of the toilet room 105 and the possibility of non-entrance is high. Therefore, in such a case, the control unit 210 can suppress wasteful power consumption by not starting or suppressing the temperature increase as the temperature increase determination NO.

  When the ratio (m / n) between the number m of non-entry determinations and the number n of human body detections is greater than the threshold ratio R in a certain day, the control unit 210 estimates the non-entrance of the user. As described above, the user usually lives in a certain cycle such as every day or every week. For this reason, the time zone with frequent non-entry determination frequency and the time zone with little frequency are also roughly decided in one day. Therefore, even if the dates are different, it can be estimated that the user is traveling in the vicinity of the toilet room and is not likely to enter the room in a time zone in which the non-room determination frequency is high. That is, there is a time zone with a high frequency of non-entry determination depending on the life rhythm. When the radio wave sensor 160 detects a human body during such a time period, the user has a high probability of not entering the room (that is, the non-entry estimation is established), and the temperature rise determination is NO, thereby determining the toilet seat. As a result, the toilet seat apparatus 110 can suppress wasteful power consumption.

  When a minimum value of a plurality of human body detection intervals is less than a predetermined interval within a certain unit time, the control unit 210 estimates the non-entry of the user. Thus, the human body detection frequency may be determined at the time interval of human body detection. That is, in steps S1033 and S1036, the toilet seat apparatus 110 may determine the human body detection frequency at the time interval of human body detection.

(Modification 1)
FIG. 25 is a flowchart showing a modification of the immediate warming control shown in FIG. In the immediate warming control of FIG. 25, when the temperature increase determination is not satisfied (S1030), the control unit 210 starts the temperature increase and starts measuring time (S1200). Then, the heater 142 raises the toilet seat temperature TEMPts to a temperature (TEMPtrg−k ° C.) (k is a positive number) between the standby temperature TEMPstb and the target temperature TEMPtrg. More specifically, the control unit 210 compares the toilet seat temperature TEMPts with the target temperature TEMPtrg (S1210). When the toilet seat temperature TEMPts is lower than (TEMPtrg−k ° C.), the control unit 210 continues to raise the temperature of the toilet seat unit 140 (NO in S1210). TEMPtrg-k ° C. is a temperature higher than the standby temperature TEMPstb and lower than the target temperature TEMPtrg.

  On the other hand, when the toilet seat temperature TEMPts is equal to or higher than (TEMPtrg−k ° C.), the control unit 210 stops the temperature increase of the toilet seat unit 140 (NO in S1220). After stopping the temperature increase, the toilet seat apparatus 110 executes Step S1060. The other operations of this modification are the same as the operations shown in the flow of FIG.

  When the temperature increase determination is not satisfied (NO in S1030), the user does not normally enter the toilet room 105. However, if the user enters the room even though the temperature rise determination is not established, there is a possibility that the time for raising the temperature of the toilet seat 140 to the target temperature TEMPtrg may be insufficient. Therefore, in this modification, even when the temperature increase determination is not satisfied, the control unit 210 increases the toilet seat temperature TEMPts to the target temperature TEMPtrg−k ° C. Thereby, even when the user enters the room after the temperature increase determination is not established, the controller 210 can reliably raise the temperature of the toilet seat 140 to the target temperature TEMPtrg.

(Modification 2)
In the above embodiment, in the temperature raising operation, the temperature raising performance of the heater 142 may be fixed. However, when the non-entry determination or the non-use determination is established, the temperature raising operation until then is wasted. Therefore, if the temperature of the toilet seat 140 is increased at a low temperature increase rate for a predetermined time from the start of temperature increase, useless power consumption can be reduced. On the other hand, in order to raise the temperature of the toilet seat 140 to the target temperature TEMPtrg when the user is seated (first purpose), the toilet seat device 110 has a high temperature rise rate after a predetermined time has elapsed since the start of the temperature rise. The toilet seat 140 is heated. For example, as shown in FIG. 26, the controller 210 increases the temperature of the toilet seat 140 at a first temperature increase rate for a predetermined time Td from the start of the temperature increase of the toilet seat 140, and after a predetermined time Td, The heater 142 is controlled to raise the temperature of the toilet seat 140 at a temperature increase rate of 2. The predetermined time Td at this time is a time equal to or shorter than the total time Ttotal, and may be, for example, the approach time T1.

  The temperature rise performance of the heater 142 may be controlled by the heating capacity or may be controlled by the energization current. When controlling by heating capability, the control part 210 controls the drive number of the heater 142, for example. Specifically, the control unit 210 drives only one heater (for example, 50 Wh, which is the same as during standby and warming) for a predetermined time Td from the start of temperature rise, and after a predetermined time Td, The heater (for example, 400 Wh) is driven. In the case of controlling with the energization current, the control unit 210 controls the current that flows to the heater 142, for example. Specifically, the control unit 210 drives a relatively low current to the heater 142 for a predetermined time Td from the start of temperature rise, and causes a relatively large current to flow to the heater after the predetermined time Td. By such control, it is possible to obtain the temperature rise performance as shown in FIG.

  The first temperature increase rate is lower than the second temperature increase rate. That is, at the beginning of the temperature raising operation, the heater 142 heats the toilet seat 140 with a relatively low temperature raising performance, and heats the toilet seat 140 with a relatively high temperature raising performance after a predetermined period. Since the temperature raising performance of the heater 142 is relatively low at the beginning of the temperature raising operation, wasteful power consumption of the toilet seat apparatus 110 is reduced when the non-entry determination or the non-use determination is established during the temperature raising operation.

For example, the comparative example (Lref) in FIG. 26 shows a graph in which the temperature is increased at an equal temperature increase rate. When the temperature raising operation is stopped at time t _off in FIG. 26, the temperature at t _off in this modification may be lower than the temperature in the comparative example (Lref). This indicates that the power consumption of this modification is smaller than the power consumption of the comparative example.

  As described above, the control unit 210 changes the temperature increase rate of the heater 142 stepwise so that the first object is achieved when the non-entry determination or the non-use determination is established during the temperature increase operation. However, wasteful power consumption can be further reduced.

(Modification 3)
In the non-entry determination shown in FIG. 21, when the non-entry determination is established, the toilet seat apparatus 110 returns to the standby state without performing the temperature raising operation. However, when the moving speed of the user is slow, the user may enter the toilet room 105 after the temperature raising operation is suppressed or stopped by the non-entry determination. In such a case, there is a high possibility that the toilet seat apparatus 110 cannot raise the temperature of the toilet seat 140 to the target temperature TEMPtrg when the user is seated. In order to avoid such a situation, the controller 210 may raise the temperature of the toilet seat 140 to a temperature that is lower than the target temperature TEMPtrg but higher than the standby temperature TEMPstb after the non-room determination.

  For example, as shown in FIG. 27, after the non-entry determination is established, the control unit 210 starts a temperature raising operation (S1066). Thereafter, the heater 142 heats the toilet seat 140 until the toilet seat temperature TEMPts reaches the target temperature TEMPtrg-k ° C. (TEMPtrg-k> TEMPstb) (S1067). When the toilet seat temperature TEMPts reaches the target temperature TEMPtrg−k ° C., the process returns to the standby state through step S1070. Thereby, even if it is a case where the user has entered the toilet room 105 after the non-entry determination, the possibility that the controller 210 can raise the toilet seat 140 to the target temperature TEMPtrg is increased.

  In the said embodiment, although the case where the toilet seat part was made into object as a to-be-heated body was demonstrated, it is good also considering washing water as a to-be-heated body. Even in the case of washing water, the temperature of the washing water at the time of seating of the user can be reliably raised to the target temperature while maintaining the standby temperature as low as possible and reducing the power consumption of the heating unit. It is possible to reduce wasteful power consumption when it is determined that the room is entered or not used.

  The metal toilet seat is reflected in the toilet seat temperature in a short time with respect to the heating of the heater. For this reason, the metal toilet seat is also suitable for immediate warming control according to the above embodiment.

DESCRIPTION OF SYMBOLS 100 ... Toilet apparatus 105 ... Toilet room 110 ... Toilet seat apparatus 120 ... Toilet bowl 130 ... Remote control apparatus (remote control)
140 ... toilet seat 142 ... heater 144 ... temperature detection unit 150 ... sensor unit 160 ... radio wave sensor 170 ... pyroelectric sensor 180 ... seating sensor 200 ... cleaning unit 210 ... control unit 212 ... arithmetic processing unit 214 ... storage unit 216 ... timer 218 …counter

Claims (4)

A toilet seat device having a toilet seat installed in a toilet room,
A heating unit that heats the object to be heated by energization;
A sensor unit that detects a user's human body outside the toilet room by radio waves and detects that the user has entered the toilet room;
A control unit for controlling the heating unit and the sensor unit ;
A timer having a clock function ,
The control unit starts energizing the heating unit when the sensor unit detects a human body, and within a predetermined time after the sensor unit starts energizing the heating unit. The toilet seat apparatus characterized by determining that the user does not enter the toilet room when the movement of the door is not detected, and suppressing or stopping energization to the heating unit. The sensor unit detects that the user is away from the toilet room by radio waves,
Wherein, when the sensor unit detects a separation of the user before detecting the movement of the door of the toilet room, to claim 1 where the user and judging not to enter into the toilet room The toilet seat device described.
A toilet seat device having a toilet seat installed in a toilet room,
A heating unit that heats the object to be heated by energization;
A sensor unit that detects a user's human body outside the toilet room by radio waves and detects that the user has entered the toilet room;
A control unit for controlling the heating unit and the sensor unit,
The control unit starts energizing the heating unit when the sensor unit detects a user's human body, and detects the user's entry into the toilet room after the sensor unit detects the user's human body. When it is determined that the user does not use the toilet seat device during the approach time until it is done, the energization to the heating unit is suppressed or stopped ,
The controller raises the temperature of the object to be heated at a first temperature increase rate for a predetermined time from the start of temperature increase of the object to be heated, and after the predetermined time, increases the temperature of the object to be heated at a second temperature increase rate. Warm up the body,
The toilet seat device, wherein the first temperature rise rate is lower than the second temperature rise rate . The predetermined time is equal to or longer than an approach time from when the sensor unit detects the user's human body to when the user enters the toilet room, and from when the sensor unit detects the user's human body. The toilet seat device according to claim 3 , wherein the time is equal to or less than a total time until the time when the user sits on the toilet seat portion.

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