JP2021114838A - Wireless power supply system - Google Patents

Abstract

To provide a wireless power supply system that prevents people from being exposed to strong radio waves for a long time.SOLUTION: A wireless power supply system includes a determination unit that determines whether there is a person in a predetermined area by fluctuation in radio wave strength of at least any of a radio wave of wireless power supply and a radio wave used for communication. A power supply unit implements wireless power supply at a second power amount or less that is less than a first power amount or stops wireless power supply to a remote control device, at least when the determination unit determines that there is a person in the predetermined area.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to a wireless power supply system.

Patent Document 1 below discloses a wireless power supply system that supplies power from a toilet device to a remote control device by radio waves. The toilet device includes a human body detection sensor. The toilet device wirelessly supplies power when the human body detection sensor does not detect the presence of a person. The toilet device stops wireless power supply when the human body detection sensor detects the presence of a person.

Japanese Unexamined Patent Publication No. 2010-53536

The detection area of the human body detection sensor is the area in front of the toilet device. Of the area between the toilet device and the remote control device, at least a part of the area may not be the detection area. When a person is present in at least a part of the area, the toilet device is wirelessly powered. As a result, a person may receive strong radio waves for a long time.

The present disclosure has been made in view of such circumstances, and an object of the present disclosure is to provide a wireless power supply system that suppresses a person from receiving strong radio waves for a long period of time.

One aspect of the present disclosure is a wireless power supply system including a toilet device provided in a toilet space and a remote control device supplied with radio waves from the toilet device, which is provided in the toilet device and is remote. At least one of the radio wave of wireless power supply and the radio wave used for communication, whether or not there is a person in a predetermined area, and the power supply unit that wirelessly supplies the first electric energy by transmitting the radio wave to the control device. The power feeding unit includes a determination unit that determines based on fluctuations in radio wave strength, and the power supply unit has a second electric energy less than or equal to the first electric energy when at least the determination unit determines that a person exists in the predetermined area. It is a wireless power supply system that performs wireless power supply in the remote control device or stops wireless power supply to the remote control device.

It is a figure which shows the configuration example of the wireless power supply system of this embodiment. It is a figure which shows the configuration example of the 1st control device and the remote control device of this embodiment. It is a figure which shows the structural example of the control part of the toilet apparatus in this embodiment. It is a figure which shows the toilet space in this embodiment. It is a figure which shows the control pattern of the wireless power supply in this embodiment. It is a flow chart of the operation of the toilet device in this embodiment. It is a flow chart of the operation of the toilet device in this embodiment. It is a figure which shows the other configuration example of the 1st control device and the remote control device of this embodiment. It is a figure explaining the communication apparatus in this embodiment. It is a figure which shows the configuration example of the wireless power supply system of this embodiment. It is a figure which shows the configuration example of the wireless power supply system of this embodiment. It is a figure which shows the configuration example of the wireless power supply system of this embodiment. It is a figure which shows the configuration example of the wireless power supply system of this embodiment.

Hereinafter, the wireless power supply system according to the present embodiment will be described with reference to the drawings.

As shown in FIG. 1, the wireless power supply system 1 includes a toilet device 2 and a remote control device 3. The wireless power supply system 1 wirelessly supplies power from the toilet device 2 to the remote control device 3. The wireless power supply of the present embodiment is a method of supplying electric power to the remote control device in a non-contact manner by transmitting radio waves from the toilet device 2 to the remote control device 3. The toilet device 2 includes a toilet bowl 4 and a toilet seat device 5.

The toilet bowl 4 is installed on the floor surface in the toilet space 100. A toilet seat device 5 is installed on the upper part of the toilet bowl 4.

The toilet seat device 5 is installed on the toilet bowl 4 provided in the toilet space 100. The toilet seat device 5 includes a main body cover 6, a toilet seat 7, and a toilet lid 8. However, the toilet seat device 5 does not have to include the toilet lid 8.

The main body cover 6 is placed at the rear of the toilet bowl 4 and above the toilet bowl 4. The main body cover 6 accommodates the first control device 9.

The toilet seat 7 is supported by the main body cover 6. The toilet seat 7 rotates with respect to the main body cover 6. The toilet lid 8 is supported by the main body cover 6. The toilet lid 8 rotates with respect to the main body cover 6.

The first control device 9 has a first antenna 51. The first control device 9 wirelessly supplies power by transmitting radio waves from the first antenna 51 toward the remote control device 3. The first control device 9 wirelessly communicates with the remote control device 3 using radio waves. The radio wave used for wireless power supply may be different from the radio wave used for wireless communication, or may be the same radio wave.

The remote control device 3 remotely controls the toilet device 2. The remote control device 3 is installed at a predetermined position in the toilet space 100. This predetermined position is, for example, the wall surface of the toilet space 100. The remote control device 3 includes an operation unit 20 and a second control device 30. When the operation unit 20 is operated, the remote control device 3 transmits information corresponding to the operation to the first control device 9 using radio waves.

The operation unit 20 is operated by the user. The operation unit 20 may include one or more push buttons 21.

The push button 21 is connected to the second control device 30. The push button 21 is in the ON state when pressed by the user. The push button 21 is in the off state when not pressed by the user. For example, the plurality of push buttons 21 are a first push button 21a, a second push button 21b, a third push button 21c, and a fourth push button 21d.

The first push button 21a is a button that is pressed by the user seated on the toilet seat 7 when the buttocks are washed with washing water. The second push button 21b is a button that the user presses when adjusting the water pressure of the washing water. The third push button 21c is a button that the user presses when generating a sound from the toilet seat device 5. The fourth push button 21d is a button to be pressed when at least one of the washing of the buttocks and the generation of the sound is stopped.

The second control device 30 includes a second antenna 31, a power receiving unit 32, a radio wave intensity detecting unit 33, a power storage unit 34, a charge amount detecting unit 35, a communication unit 36, and a control unit 37.

The second antenna 31 receives the radio wave transmitted from the first antenna 51. When the second antenna 31 receives a radio wave, the second antenna 31 outputs a signal corresponding to the received radio wave to the power receiving unit 32. For example, the second antenna 31 may be a loop antenna or a dipole antenna.

The power receiving unit 32 receives electric power from the toilet device 2 via the second antenna 31. The power receiving unit 32 converts the received power into DC power by rectifying it. For example, the power receiving unit 32 includes a rectifying circuit that generates a DC voltage by rectifying a signal transmitted from the second antenna 31. The power receiving unit 32 outputs the converted DC power to the power storage unit 34.

The radio field intensity detection unit 33 detects the radio wave intensity Ir1, which is the intensity of the radio wave received by the second antenna 31. For example, the radio field strength detection unit 33 may obtain the radio wave strength Ir1 by measuring the received power received by the power receiving unit 32, or may obtain the radio wave strength Ir1 by measuring the DC power converted by the second antenna 31 to measure the radio wave strength Ir1. May be sought. For example, the radio wave intensity detection unit 33 may obtain the radio wave intensity Ir1 by measuring the voltage of the signal output from the second antenna 31. The radio wave intensity detection unit 33 may obtain the radio wave intensity Ir1 by measuring the DC voltage generated by the rectifier circuit. The radio wave intensity detection unit 33 obtains the radio wave intensity Ir1 at regular intervals, and outputs the radio wave intensity Ir1 to the control unit 37. The radio wave intensity detecting unit 33 is not particularly limited as to the method for measuring the radio wave intensity Ir1, and any method may be used as long as the radio wave intensity Ir1 can be measured.

The power storage unit 34 charges the received power received by the power receiving unit 32. The power storage unit 34 is connected to the power receiving unit 32. For example, the power storage unit 34 charges the DC power converted by the power receiving unit 32. For example, the power storage unit 34 is a secondary battery. For example, the power storage unit 34 is a nickel-metal hydride battery or a lithium-ion battery. For example, the power storage unit 34 may be a capacitor.

The charge amount detection unit 35 obtains the charge amount Q charged in the power storage unit 34. For example, the charge amount detection unit 35 obtains the output voltage of the power storage unit 34 as the charge amount Q. However, the charge amount Q is not limited to the output voltage and may be SOC (State Of Charge). The charge amount detection unit 35 outputs the obtained charge amount Q to the control unit 37.

The communication unit 36 wirelessly communicates with the first control device 9 using radio waves. For example, the communication unit 36 wirelessly communicates with the first control device 9 according to any wireless communication standard of Wi-Fi (registered trademark), Bluetooth (registered trademark), and BLE (Bluetooth Low Energy). However, the communication unit 36 only needs to be able to communicate with the first control device 9 using radio waves, and is not particularly limited to the communication standard and the frequency band of the radio waves.

The control unit 37 operates with the electric power charged in the power storage unit 34. The control unit 37 receives information from the first control device 9 via the communication unit 36. When at least one of the plurality of push buttons 21 is turned on, the control unit 37 outputs the identification information corresponding to the pushed buttons 21 in the on state to the communication unit 36. As a result, the communication unit 36 wirelessly transmits the identification signal from the control unit 37 to the first control device 9. When the control unit 37 acquires the radio wave intensity Ir1 from the radio wave intensity detection unit 33, the control unit 37 outputs the radio wave intensity Ir1 to the communication unit 36. As a result, the communication unit 36 wirelessly transmits the radio wave intensity Ir1 from the control unit 37 to the first control device 9. When the charge amount Q is acquired from the charge amount detection unit 35, the control unit 37 outputs the charge amount Q to the communication unit 36. As a result, the communication unit 36 wirelessly transmits the charge amount Q from the control unit 37 to the first control device 9.

The configuration of the first control device 9 of the present embodiment will be described below. The first control device 9 includes a power conversion unit 10, a human body detection sensor 11, a communication unit 12, a control unit 13, and a power supply unit 14.

The power conversion unit 10 is supplied with power from the AC adapter 200 connected to the outlet in the toilet space 100. The power conversion unit 10 converts the power from the AC adapter 200 into a predetermined power. The power conversion unit 10 supplies the converted power to each of the human body detection sensor 11, the communication unit 12, the control unit 13, and the power supply unit 14. For example, the power conversion unit 10 is an AC-DC converter. The power conversion unit 10 may further include a DC-DC converter that steps down the output of the AC-DC converter.

The human body detection sensor 11 detects whether or not a person exists in the first region 101, which is a predetermined region in the toilet space 100. The first area 101 is an area in front of the toilet device 2 in the toilet space 100. The front is the front direction when viewed from the user sitting on the toilet seat 7. The human body detection sensor 11 detects a person who exists at a position far forward from the toilet seat 7. The human body detection sensor 11 can detect a person who has entered the toilet space 100. For example, the human body detection sensor 11 is any of a pyroelectric sensor, an ultrasonic sensor, and a distance measuring sensor. The human body detection sensor 11 is connected to the control unit 13. The human body detection sensor 11 outputs a detection result of whether or not a person exists in the first region 101 to the control unit 13. For example, when the human body detection sensor 11 detects the presence of a person in the first region 101, the human body detection sensor 11 outputs the first detection signal to the control unit 13. For example, when the human body detection sensor 11 does not detect the presence of a person in the first region 101, the human body detection sensor 11 outputs a second detection signal to the control unit 13. However, the present invention is not limited to this, and the human body detection sensor 11 may output a predetermined signal to the control unit 13 only when the presence of a person in the first region 101 is detected.

The human body detection sensor 11 may be provided in the toilet space 100, and may not be provided in the toilet device 2.

The communication unit 12 wirelessly communicates with the communication unit 36 using radio waves. The communication unit 12 communicates with the same wireless communication standard as the communication unit 36. For example, the communication unit 12 wirelessly communicates with the communication unit 36 using any of the wireless communication standards of Wi-Fi, Bluetooth, and BLE.

The control unit 13 is electrically connected to the communication unit 12. The control unit 13 transmits information to the communication unit 12. The control unit 13 receives information from the remote control device 3 via the communication unit 12. When the operation unit 20 is operated, the control unit 13 receives the identification information from the remote control device 3 via the communication unit 12. The control unit 13 receives the radio field strength Ir1 from the remote control device 3 via the communication unit 12. The control unit 37 receives the charge amount Q from the remote control device 3 via the communication unit 12.

The control unit 13 controls the wireless power supply from the toilet device 2 to the remote control device 3. The control unit 13 permits the first wireless power supply when there is no person in the toilet space 100. The first wireless power supply is a wireless power supply that supplies power to the remote control device 3 by transmitting a first radio wave to the remote control device 3. The first electric energy is an integral value of time and electric power. When a person is present in the toilet space 100, the control unit 13 permits the second wireless power supply or prohibits the wireless power supply. The second wireless power supply is a wireless power supply that supplies power to the remote control device 3 by transmitting a second radio wave to the remote control device 3 to supply power equal to or less than the second power amount lower than the first power amount. .. The second wireless power supply may supply power that is lower than the first power amount and is equal to or less than the second power amount, and may have a plurality of power supply patterns in which the amount of power to be supplied is different. For example, the second wireless power supply has a first power supply pattern and a second power supply pattern. The first power supply pattern is a power supply pattern for supplying electric power of the second electric energy. The second power supply pattern is a power supply pattern that supplies a third electric power amount lower than the second electric energy amount. For example, when a person is present in the toilet space 100 by the human body detection sensor 11, the first control device 9 may perform the second wireless power supply in the first power supply pattern. When a person exists in the toilet space 100 by the radio wave described later instead of the human body detection sensor 11, the first control device 9 may supply the second wireless power supply in the second power supply pattern. The second electric energy may be a power amount lower than the first electric energy. For example, the second electric energy has a magnitude that does not affect people, pacemakers, or the like.

The power supply method for the second wireless power supply may be any method that can supply power in an amount equal to or less than the second power amount. For example, in the second wireless power supply, the second radio wave may be transmitted by at least one of the first power supply method and the third power supply method. The first power feeding method is a power feeding method in which the radio wave strength of the second radio wave is lower than the radio wave strength of the first radio wave. The second power feeding method is a power feeding method in which the transmission cycle of the second radio wave is longer than the transmission cycle of the first radio wave. The transmission cycle is a cycle in which radio waves are transmitted from the toilet device 2 to the remote control device 3. The third power feeding method is a power feeding method in which the transmission period of the second radio wave is shorter than the transmission period of the first radio wave. The transmission period is a period during which radio waves are transmitted from the toilet device 2 to the remote control device 3.

As shown in FIG. 3, the control unit 13 includes a first determination unit 40, a second determination unit 41, a third determination unit 42, a fourth determination unit 43, and a power supply control unit 44.

The first determination unit 40 determines whether or not a person exists in the first region 101 based on the detection result of the human body detection sensor 11. For example, the first region 101 is a region surrounded by a dotted line shown in FIG. For example, the first determination unit 40 determines that a person exists in the first region 101 when the first detection signal is received from the human body detection sensor 11. For example, when the first determination unit 40 receives the second detection signal from the human body detection sensor 11, it determines that there is no person in the first region 101. For example, the first determination unit 40 may determine that a person exists in the first region 101 when the predetermined signal is received from the human body detection sensor 11. When the first determination unit 40 determines that a person exists in the first region 101, the first determination unit 40 outputs the first information, which is information indicating the determination result, to the third determination unit 42.

The second determination unit 41 determines whether or not a person exists in the second region 102, which is a predetermined region including the region that cannot be detected by the human body detection sensor 11 provided in the toilet space 100, in the radio wave and communication of the wireless power supply. Judgment is made based on the fluctuation of at least one of the radio waves used. The second region 102 may have a region that cannot be detected by the human body detection sensor 11. The second area 102 may be a space inside the toilet space 100 or a space outside the toilet space 100. The second area 102 may be a space including both a space inside the toilet space 100 and a space outside the toilet space 100. For example, the second region 102 has a region that does not overlap with at least a part of the first region 101. For example, the second region 102 may be a region that does not overlap with the first region 101. For example, the second area 102 has a specific area on the side where the remote control device 3 is arranged when viewed from the user sitting on the toilet seat 7 in the toilet space 100. The specific area is an area between the toilet device 2 and the remote control device 3, and is an area in which the presence of a person cannot be detected by the human body detection sensor 11. In the present embodiment, the second region 102 is a region having a path through which radio waves propagate between the toilet device 2 and the remote control device 3. The second region 102 has an region in the toilet space 100 in which the presence of a person cannot be detected by the human body detection sensor 11.

The second determination unit 41 of the present embodiment determines whether or not a person exists in the second region 102 according to the radio wave intensity Ir1. The second determination unit 41 determines whether or not the radio wave intensity Ir1 has changed at regular intervals. For example, the second determination unit 41 may determine that the radio wave intensity Ir1 has changed when the rate of change of the radio wave intensity Ir1 exceeds the change rate threshold value which is a predetermined threshold value.

The second determination unit 41 may determine that the radio wave intensity Ir1 has changed when the rate of change of the calculated value of the radio wave intensity Ir1 exceeds the change rate threshold value which is a predetermined threshold value. The calculated value may be an average value of a plurality of radio wave intensities Ir1, a standard deviation, or a dispersion value. The second determination unit 41 may determine that the radio wave intensity Ir1 has fluctuated when at least one of the radio wave intensity Ir1 and the calculated value is less than the first radio wave intensity threshold value which is a predetermined threshold value. When the second determination unit 41 determines that the radio wave intensity Ir1 has fluctuated, it determines that a person exists in the second region 102 according to the radio wave intensity Ir1. When the second determination unit 41 determines that the radio wave intensity Ir1 has fluctuated, the second determination unit 41 outputs the second information, which is information indicating the determination result, to the third determination unit 42. The second determination unit 41 may stop the output of the second information when at least one of the radio wave intensity Ir1 and the calculated value is equal to or higher than the second radio wave threshold value which is a predetermined threshold value. The second radio wave threshold value may be the same value as the first radio wave threshold value, or may be a value higher than the first radio wave threshold value. The second determination unit 41 may determine that the radio wave intensity Ir1 has changed when at least one of the radio wave intensity Ir1 and the calculated value exceeds the third radio wave threshold value, which is a predetermined threshold value.

The third determination unit 42 determines whether or not a person exists in the toilet space 100. At least one of a case where the first determination unit 40 determines that a person exists in the first area 101 and a case where the second determination unit 41 determines that a person exists in the second area 102. In this case, it is determined that a person exists in the toilet space 100. For example, the third determination unit 42 determines that a person exists in the toilet space 100 when at least one of the first information and the second information is acquired. When the third determination unit 42 determines that a person exists in the toilet space 100, the third determination unit 42 outputs the third information, which is information indicating the determination result, to the power supply control unit 44.

The fourth determination unit 43 determines whether or not the power storage unit 34 needs to be charged. For example, the fourth determination unit 43 determines whether or not the charge amount Q is equal to or less than the first charge amount threshold value Q1 which is a predetermined threshold value. When the charge amount Q becomes equal to or less than the first charge amount threshold value Q1, the fourth determination unit 43 determines that the power storage unit 34 needs to be charged. The case where the power storage unit 34 needs to be charged means that the charge amount Q of the power storage unit 34 is insufficient or close to the insufficient state when the remote control device 3 operates. When the fourth determination unit 43 determines that the power storage unit 34 needs to be charged, the fourth determination unit 43 outputs the fourth information, which is information indicating the determination result, to the power supply control unit 44.

The fourth determination unit 43 determines whether or not the charge amount Q is equal to or greater than the second charge amount threshold value Q2. The case where the charge amount Q is equal to or higher than the second charge amount threshold value Q2 is either a case where the power storage unit 34 is fully charged or a case where the charge amount Q is close to full charge. The second charge amount threshold Q2 is a value higher than the first charge amount threshold Q1. For example, when the fourth determination unit 43 determines that the charge amount Q is equal to or greater than the second charge amount threshold value Q2, the fourth determination unit 43 outputs the fifth information, which is information indicating the determination result, to the power supply control unit 44.

The power supply control unit 44 permits the first wireless power supply when it is determined that no person exists in the toilet space 100. For example, when the power supply control unit 44 does not acquire the third information, the power supply control unit 44 outputs a first control signal which is a signal for permitting the first wireless power supply to the power supply unit 14.

When it is determined that a person exists in the toilet space 100, the power supply control unit 44 prohibits the first wireless power supply and permits the second wireless power supply. For example, when the power supply control unit 44 acquires the third information, the power supply control unit 44 outputs a second control signal which is a signal for permitting only the second wireless power supply to the power supply unit 14. However, the present invention is not limited to this, and the power supply control unit 44 may prohibit all wireless power supply when it is determined that a person exists in the toilet space 100. In this case, when the power supply control unit 44 acquires the third information, the power supply control unit 44 outputs a third control signal, which is a signal for prohibiting wireless power supply, to the power supply unit 14.

The power supply control unit 44 may allow the second wireless power supply only when it is determined that a person exists in the toilet space 100 and it is determined that the power storage unit 34 needs to be charged. For example, the power supply control unit 44 may output the second control signal to the power supply unit 14 only when the third information is received and the fourth information is received. Then, the power supply control unit 44 may output the third control signal to the power supply unit 14 when the third information is received and the fourth information is not received.

When the power supply control unit 44 receives the fifth information, the power supply control unit 44 prohibits all wireless power supply. When the power supply control unit 44 acquires the fifth information, the power supply control unit 44 outputs a third control signal to the power supply unit 14 to supply wireless power supply regardless of whether the third information is received or not. restrict.

The power supply unit 14 operates by acquiring electric power from the power conversion unit 10. The power supply unit 14 performs either the first wireless power supply or the second wireless power supply. The power supply unit 14 cannot perform the first wireless power supply and the second wireless power supply at the same time. The radio wave transmitted by the power feeding unit 14 to the remote control device 3 may be, for example, 920 MHz or a microwave.

When at least the second determination unit 41 determines that a person exists in the second area 102, the power supply unit 14 executes the second wireless power supply, which is the wireless power supply with the second power amount or less, or remotely controls the power supply unit 14. Stop the wireless power supply to the device 3.

When the power supply unit 14 receives the first control signal from the power supply control unit 44, the power supply unit 14 performs the first wireless power supply to the remote control device 3. When the power supply unit 14 receives the second control signal from the power supply control unit 44, the power supply unit 14 performs the second wireless power supply to the remote control device 3. When the power supply unit 14 receives the third control signal from the power supply control unit 44, the power supply unit 14 does not perform wireless power supply to the remote control device 3.

As shown in FIG. 5, the power feeding unit 14 of the present embodiment has a second wireless when the radio wave intensity Ir1 fluctuates, when the human body detection sensor 11 detects the presence of a person, or at least in any one of the cases. Power supply or stop wireless power supply. The power feeding unit 14 performs the first wireless power feeding when the radio wave intensity Ir1 does not fluctuate and when the human body detection sensor 11 does not detect the presence of a person. When the charge amount Q is equal to or greater than the second charge amount threshold value Q2, the power supply unit 14 stops all wireless power supply of the first wireless power supply and the second wireless power supply.

The power feeding unit 14 includes a power transmission unit 50 and a first antenna 51.

The power transmission unit 50 is electrically connected to the first antenna 51. The power transmission unit 50 has a transmitter that generates a transmission signal that is a signal of a predetermined frequency. The power feeding unit 14 may amplify the transmission signal. The power transmission unit 50 may adjust the amplification factor of the transmission signal based on either the first control signal or the second control signal. For example, when the power transmission unit 50 receives the first control signal, the power transmission unit 50 may amplify the transmission signal at the first amplification factor. When the second control signal is received, the transmission unit 50 may amplify the transmission signal with a second amplification factor lower than the first amplification factor. The power transmission unit 50 may adjust the phase of the transmission signal. When the power transmission unit 50 receives the control signal of either the first control signal or the second control signal, the power transmission unit 50 outputs a transmission signal whose amplification factor and phase are adjusted to the first antenna 51. When the power transmission unit 50 receives the third control signal, the power transmission unit 50 stops the output of the transmission signal to the first antenna 51.

The first antenna 51 transmits radio waves to the remote control device 3 by transmitting a transmission signal from the power transmission unit 50. In the case of the first wireless power supply, the first antenna 51 transmits the first radio wave toward the remote control device 3. In the case of the second wireless power supply, the first antenna 51 transmits the second radio wave toward the remote control device 3. For example, the first antenna 51 is a loop antenna. The first antenna 51 may be an array antenna having a plurality of antenna elements. The first antenna 51 is provided in the main body cover 6 on the side where the remote control device 3 is arranged as seen from the user sitting on the toilet seat 7. For example, when the remote control device 3 is arranged on the wall surface on the right side of the toilet device 2, the first antenna 51 is provided at least in a specific area on the right side when viewed from the user sitting on the toilet seat 7. .. For example, when the remote control device 3 is arranged on the left wall surface of the toilet device 2, the first antenna 51 is provided at least in a specific area on the left side when viewed from the user sitting on the toilet seat 7. .. The specific area on the right side may be inside the main body cover 6 on the right side of the center line 300 when the toilet space 100 is viewed from a plane. The specific area on the left side may be inside the main body cover 6 on the left side of the center line 300 when the toilet space 100 is viewed from a plane.

For example, the first antenna 51 may be provided at at least one of the left end and the right end of the main body cover 6. For example, when the remote control device 3 is arranged on the wall surface in the right direction of the toilet device 2, the first antenna 51 is arranged at the right end in the main body cover 6. For example, when the remote control device 3 is arranged on the wall surface in the left direction of the toilet device 2, the first antenna 51 is arranged at the left end in the main body cover 6. For example, the first antenna 51 is arranged in a functional portion in the main body cover 6 provided behind the toilet bowl 4.

In the following, a first example of the operation flow of the toilet device 2 will be described with reference to FIG.

The control unit 13 determines whether or not the charge amount Q is equal to or greater than the second charge amount threshold value Q2 (step S101). When the charge amount Q is equal to or greater than the second charge amount threshold value Q2, the control unit 13 does not supply power wirelessly (step S102). When the charge amount Q is less than the second charge amount threshold value Q2, the control unit 13 determines whether or not the radio wave intensity Ir1 has fluctuated (step S103). When the control unit 13 determines that the radio wave intensity Ir1 has fluctuated, the control unit 13 permits the second wireless power supply. As a result, the power feeding unit 14 supplies the remote control device 3 with the second wireless power supply (step S104). When the control unit 13 determines that the radio wave intensity Ir1 has fluctuated, the wireless power supply may be prohibited. In this case, in step S104, the power feeding unit 14 does not wirelessly supply power. Therefore, no radio wave is transmitted from the toilet device 2.

In step S103, when it is determined that the radio wave intensity Ir1 does not fluctuate, the control unit 13 determines whether or not the human body detection sensor 11 has detected the presence of a person (step S105). When the human body detection sensor 11 detects the presence of a person, the control unit 13 shifts to the process of step S104. The control unit 13 permits the first wireless power supply when the human body detection sensor 11 does not detect the presence of a person. As a result, the power feeding unit 14 first wirelessly supplies power to the remote control device 3 (step S106).

In the following, a second example of the operation flow of the toilet device 2 will be described with reference to FIG. 7.

The control unit 13 determines whether or not the charge amount Q is equal to or greater than the second charge amount threshold value Q2 (step S201). When the charge amount Q is equal to or greater than the second charge amount threshold value Q2, the control unit 13 does not supply power wirelessly (step S202). When the charge amount Q is less than the second charge amount threshold value Q2, the control unit 13 determines whether or not the radio wave intensity Ir1 has fluctuated (step S203). When the control unit 13 determines that the radio wave intensity Ir1 has fluctuated, the control unit 13 determines whether or not the charge amount Q is equal to or less than the first charge amount threshold value Q1 (step S204). When the charge amount Q is equal to or less than the first charge amount threshold value Q1, the control unit 13 permits the second wireless power supply. As a result, the power feeding unit 14 supplies the remote control device 3 with the second wireless power supply (step S205). In step S204, the control unit 13 prohibits wireless power supply when the charge amount Q exceeds the first charge amount threshold value Q1. As a result, the power feeding unit 14 does not supply power wirelessly (step S206).

In step S203, when it is determined that the radio wave intensity Ir1 does not fluctuate, the control unit 13 determines whether or not the human body detection sensor 11 has detected the presence of a person (step S207). When the human body detection sensor 11 detects the presence of a person, the control unit 13 shifts to the process of step S204. The control unit 13 permits the first wireless power supply when the human body detection sensor 11 does not detect the presence of a person. As a result, the power feeding unit 14 first wirelessly supplies power to the remote control device 3 (step S208).

When there is a person in a region where the radio wave of wireless power supply propagates, which is a region that cannot be detected by the human body detection sensor 11, the radio wave intensity Ir1 fluctuates. When the radio wave intensity Ir1 fluctuates, the toilet device 2 of the above embodiment performs the second wireless power supply or stops the wireless power supply to the remote control device 3. As a result, the toilet device 2 can prevent a person from receiving strong radio waves for a long time.

The second determination unit 41 determines whether or not a person exists in the second region 102, which is a predetermined region, based on the fluctuation of the radio wave intensity of at least one of the radio wave of wireless power supply and the radio wave used for communication. The second region 102 is a predetermined region including a region that cannot be detected by the human body detection sensor 11 provided in the toilet space 100, and includes a space adjacent to the toilet device 2. The space adjacent to the toilet device 2 is at least one of a space different from the toilet space 100, a bathroom space, a space provided with a urinal, and a space provided with a washbasin. The bathroom space, the space provided with the urinal, and the space provided with the washbasin may be included in the toilet space 100, respectively.

In the above embodiment, the radio wave intensity detection unit 33 has detected the radio wave intensity Ir1, which is the intensity of the radio wave received by the second antenna 31. However, the radio wave intensity detection unit 33 may detect a radio wave intensity other than the radio wave intensity Ir1. For example, the radio wave intensity detecting unit 33 may detect the radio wave intensity which is the intensity of the radio wave received from the communication unit 12 by the communication unit 36 by wireless communication. The radio wave strength detection unit 33 may detect the radio wave strength Ir2, which is the strength of the radio wave received from the communication unit 12 by the communication unit 36 by wireless communication. In this case, the control unit 37 wirelessly transmits the radio field strength Ir2 to the toilet device 2 via the communication unit 36. The second determination unit 41 may determine whether or not a person exists in the second region 102 according to the radio wave intensity Ir2 instead of the radio wave intensity Ir1.

As shown in FIG. 8, the first control device 9 may include a radio wave intensity detecting unit 33. In this case, the remote control device 3 does not have to include the radio wave intensity detection unit 33. When the radio wave strength detection unit 33 is provided in the first control device 9, the radio wave strength detection unit 33 detects the radio wave strength Ix, which is the strength of the radio wave received from the communication unit 36 by the communication unit 12 by wireless communication. You may. The radio wave intensity detection unit 33 transmits the radio wave intensity Ix to the control unit 13. The second determination unit 41 of the control unit 13 may determine whether or not a person exists in the second region 102 according to the radio wave intensity Ix instead of the radio wave intensity Ir1.

Therefore, the power feeding unit 14 has a first radio wave strength which is the strength of the radio wave received by the remote control device 3 from the toilet device 2 and a second radio wave strength which is the strength of the radio wave received by the toilet device 2 from the remote control device 3. When the radio wave intensity of at least one of the above fluctuates, the second wireless power supply is performed or the wireless power supply to the remote control device 3 is stopped. For example, the first radio field strength is at least one of the radio wave strength Ir1 and the radio wave strength Ir2. For example, the second radio field strength is the radio field strength Ix.

The second determination unit 41 determines whether or not a person exists in the second region 102 based on the fluctuation of the radio wave intensity of at least one of the radio wave of wireless power supply and the radio wave used for communication. As an example, the strength of the radio wave used for communication is the strength of the radio wave used for communication between the toilet device 2 and the remote control device 3, and is at least one of the radio wave strength Ir1 and the radio wave strength Ix. However, the second determination unit 41 determines whether or not there is a person in the second region 102 as the radio wave intensity of the toilet device 2 in the toilet space 100 and the toilet device 2 in a space different from the toilet space 100. The strength of the radio wave used for communication with and may be used. The second determination unit 41 uses the remote control device 3 in the toilet space 100 and the remote control device 3 in a space different from the toilet space 100 as radio wave intensities for determining whether or not a person exists in the second region 102. The strength of the radio wave used for communication with and may be used. The radio waves used by the second determination unit 41 for determining whether or not a person exists in the second area 102 are radio waves transmitted and received between the toilet device 2 and the remote control device 3 in the toilet space 100, and the radio waves in the toilet space 100. At least one of the radio waves transmitted and received between the toilet device 2 and the toilet device 2 outside the toilet space 100 and the radio waves transmitted and received between the remote control device 3 inside the toilet space 100 and the remote control device 3 outside the toilet space 100. That radio wave.

The toilet device 2 is provided under predetermined conditions in which at least one of the case where the human body detection sensor 11 detects the presence of a person and the case where any of the radio wave strength Ir1, the radio wave strength Ir2, and the radio wave strength Ix fluctuates. , The second wireless power supply to the remote control device 3 may be performed, or the wireless power supply to the remote control device 3 may be stopped. Thereby, the toilet device 2 can suppress the person from receiving a strong radio wave for a long time when the person exists in the area where the person may receive the radio wave in the toilet space 100.

The control unit 13 may determine whether or not to allow wireless power supply to the remote control device 3 according to the charge amount Q obtained from the communication unit 12. As a result, the toilet device 2 performs wireless power supply according to the charge amount Q when it becomes necessary to supply power when a person exists in the toilet space 100, so that the person is prevented from receiving radio waves for a long time. can do. Here, for example, the permission or disapproval of the wireless power supply to the remote control device 3 is any one of the permission of the first wireless power supply, the permission of the second wireless power supply, and the prohibition of the wireless power supply.

When the charge amount Q obtained from the communication unit 12 becomes equal to or less than the first charge amount threshold value Q1, the control unit 13 permits wireless power supply to the remote control device 3, and the charge amount Q is the second charge amount. When the threshold value Q2 or more is reached, the wireless power supply to the remote control device 3 may be prohibited. As a result, the toilet device 2 can suppress overcharging of the power storage unit 34. The toilet device 2 can perform wireless power supply when the charge amount of the power storage unit 34 is small, and can prevent the remote control device 3 from becoming inoperable.

When the third determination unit 42 determines that a person exists in the toilet space 100, the power supply unit 14 performs the second wireless power supply only when the charge amount Q becomes equal to or less than the first charge amount threshold value Q1. You may. As a result, the toilet device 2 can supply power wirelessly at a level safe for humans even when it becomes necessary to supply power when a person is present in the toilet space 100.

As shown in FIG. 9, the communication unit 12 may communicate with one or more communication devices 400 other than the toilet device 2 and the remote control device 3 provided in the toilet space 100. The wireless power supply system 1 may further include a communication device 400. The communication device 400 is not particularly limited as long as it is a device having a communication function other than the toilet device 2 and the remote control device 3 provided in the toilet space 100. For example, the communication device 400 is at least one of a toilet device 2 and a remote control device 3 in a toilet space different from the toilet space 100. For example, the communication device 400 is a communication device that wirelessly transmits information received by a sensor used in IoT (Internet of Things). For example, the communication device 400 may be included in at least one of a communication device owned by a person, a wearable device, and an implantable device embedded in the body. For example, a communication device possessed by a person is at least one of a personal digital assistant, a vehicle communication device, and a switchgear. For example, a mobile information terminal is a smartphone or tablet terminal. The vehicle communication device is a device that remotely locks or unlocks the opening / closing body of the vehicle and starts the engine of the vehicle wirelessly. The opening / closing body of the vehicle is at least one of a door and a tailgate. A switchgear is a device that can remotely and wirelessly open and close a building's switchgear. The opening and closing body of the building is at least one of a door, a window and a shutter. For example, the wearable device is at least one of a smart watch and a smart glass. Implantable devices are at least one of medical devices, pacemakers and microchips. For example, the microchip is embedded in a person for entry / exit control applications.

In the toilet device 2, when a person having a communication device 400 enters the toilet space 100, the person exists in the toilet space 100 by directly or indirectly communicating with the communication device 400 via the communication unit 12. You may detect that you do. When a person having a communication device 400 enters a space different from the toilet space 100, the toilet device 2 communicates directly or indirectly with the communication device 400 via the communication unit 12, so that the toilet space 100 is used. It may be detected that a person exists in a space different from that of the above. When the control unit 13 communicates with the communication device 400 and detects the presence of a person, the control unit 13 may prohibit wireless power supply to the remote control device 3 in the toilet space 100, or allow only the second wireless power supply. You may. Therefore, when the toilet device 2 communicates with the communication device 400 and detects the presence of a person, all the wireless power supply may be stopped, or only the second wireless power supply may be performed.

The communication device 400 may be installed in the building. For example, the communication device 400 may be included in at least one of a washbasin device, a faucet device, a bathroom device, a urinal device, an opening / closing body control device, a lighting device, a home appliance device, and a security device. The communication device 400 may be arranged in the toilet space 100, or may be arranged in a space different from the toilet space 100. The space different from the toilet space 100 is, for example, a space adjacent to the toilet space 100. As an example, as shown in FIG. 10, when toilet booths are arranged in a public toilet, one toilet booth is a toilet space 100, and the toilet booths other than the toilet booth are different from the toilet space 100. be.

When the wash basin has a communication device 400, the communication device 400 provides human body detection information indicating that a person exists when the lighting device or the faucet device provided in the wash basin is used. May be sent to. When the bathroom device has the communication device 400, the communication device 400 may transmit the human body detection information indicating that a person exists to the toilet device 2 when the person in the bathroom is detected. When the faucet device has the communication device 400, the communication device 400 may transmit the human body detection information indicating that a person exists when the faucet is used to the toilet device 2. When the urinal device has the communication device 400, the communication device 400 may transmit the human body detection information indicating that a person exists when the urinal is used to the toilet device 2. The case where the urinal is used is, for example, the case where a person in front of the urinal is detected by a motion sensor in the urinal device. The opening / closing body control device is a device that opens / closes the opening / closing body of a building. The opening / closing body is a window or a door. When the opening / closing body control device has the communication device 400, the communication device 400 may transmit the human body detection information indicating the existence of a person when controlling the opening / closing body to the toilet device 2.

When the lighting device has the communication device 400, the communication device 400 may transmit the human body detection information indicating that a person exists when the lighting device in the lighting device is lit to the toilet device 2. .. When the home appliance has the communication device 400, the communication device 400 may transmit the human body detection information to the toilet device 2 when the home appliance is driven. For example, home appliances are at least one of air conditioners, televisions, refrigerators and washing machines. When the communication device 400 is provided in the refrigerator, a person exists when the communication device 400 detects at least one of the open state to the closed state and the closed state to the open state of the refrigerator door. Human body detection information indicating that may be transmitted to the toilet device 2. The security device is, for example, at least one of a security camera and a security sensor. When the security device has a communication device 400, the communication device 400 provides human body detection information indicating that a person exists when a person is detected by a security camera or a security sensor or when the setting of the security device is changed. It may be transmitted to the toilet device 2.

The communication device 400 may acquire the human body detection information from the human body detection sensor arranged in the space where the communication device 400 is provided. The human body detection sensor is, for example, one of a pyroelectric sensor, an ultrasonic sensor, and a distance measuring sensor. The communication device 400 may acquire the human body detection information from the toilet device 2 arranged in the space. The communication device 400 may receive the radio wave from the toilet device 2 and transmit the human body detection information indicating that a person exists to the toilet device 2 when the received radio wave intensity falls below a predetermined threshold value. ..

The control unit 13 in the toilet space 100 determines whether to allow or prohibit wireless power supply to the remote control device 3 in the toilet space 100 based on the information received from the communication device 400 via the communication unit 12. May be good. For example, the control unit 13 permits one of the first wireless power supply, the second wireless power supply, and the prohibition of the wireless power supply based on the information received from the communication device 400. As an example, when the control unit 13 in the toilet space 100 receives the human body detection information indicating the existence of a person received from the communication device 400 via the communication unit 12, the control unit 13 with respect to the remote control device 3 in the toilet space 100 Wireless power supply may be prohibited. When the control unit 13 in the toilet space 100 receives the human body detection information indicating the existence of a person received from the communication device 400 via the communication unit 12, the control unit 13 has a second wireless connection to the remote control device 3 in the toilet space 100. Only power supply may be allowed.

For example, when the information received from the communication device 400 via the communication unit 12 is not the information indicating the existence of a person, the control unit 13 in the toilet space 100 is the first with respect to the remote control device 3 in the toilet space 100. Wireless power supply and second wireless power supply may be permitted. As a result, when there is a person in a space different from the toilet space 100, the power feeding unit 14 either supplies the second wireless power or stops the wireless power supply. Therefore, the toilet device 2 can suppress that a person who passes through the toilet space and is in another space receives a strong radio wave. For example, the space different from the toilet space 100 is a space within the range where the radio waves transmitted from the toilet space 100 can reach. The communication device 400 that communicates with the communication unit 12 may be set in advance.

In the example shown in FIG. 10, the communication device 400 is at least one of the toilet device 2 and the remote control device 3 in the toilet space 100b and 100c different from the toilet space 100a. For example, the toilet device 2 in the toilet space 100b transmits human body detection information, which is information on whether or not a person exists in the toilet space 100b, to the communication unit 12 in the toilet space 100a. When the third determination unit 42 in the toilet space 100b determines that a person exists in the toilet space 100b, the toilet device 2 in the toilet space 100b provides human body detection information indicating the determination result to the toilet device in the toilet space 100a. You may send to 2. Further, the communication device 400, which is the toilet device 2 of the toilet space 100b, indicates that a person such as a user 500 exists in the second region 102 of the toilet space 100b when the radio wave intensity from the toilet space 100a fluctuates. Human body detection information may be transmitted to the toilet device 2 in the toilet space 100a. The communication device 400, which is at least one of the toilet device 2 and the remote control device 3 in the toilet space 100c, has a user 600 in the second region 102 in the toilet space 100c when the radio wave intensity from the toilet space 100a fluctuates. Human body detection information indicating the existence of such a person may be transmitted to the toilet device 2 in the toilet space 100a. The method of determining whether or not the radio wave intensity from the toilet space 100a of the communication device 400 has fluctuated may be the same as the method of determining whether or not the radio wave intensity Ir1 has fluctuated by the second determination unit 41.

The toilet space 100 may be the entire space of a public toilet. In this case, the communication device 400 is provided in the toilet space 100. For example, in the example shown in FIG. 11, the communication device 400 is at least one of the washbasin device 700 and the urinal device 800 provided in the multipurpose toilet. When a faucet device that supplies hot water or water to the wash basin 701 is used, the wash basin 700 may transmit human body detection information indicating the existence of a person to the toilet device 2. The toilet device 2 communicates with each of the washbasin device 700 and the urinal device 800 by using radio waves. The washroom device 700 receives at least one of a radio wave for communication and a radio wave for wireless power supply from the toilet device 2, and human body detection information indicating that a person exists when the received radio wave intensity fluctuates. May be transmitted to the toilet device 2. The washbasin device 700 may receive at least one of a radio wave for communication and a radio wave for wireless power supply from the toilet device 2, and transmit the received radio wave strength to the toilet device 2. The second determination unit 41 of the toilet device 2 determines whether or not the radio wave intensity of the radio waves transmitted and received between the toilet device 700 and the toilet device 2 has changed, and thus determines whether or not a person exists in the toilet space 100. May be determined.

The urinal device 800 may transmit human body detection information indicating that a person exists when the urinal 801 is used to the toilet device 2. For example, when the urinal device 800 detects a person in front of the urinal 801 with a motion sensor in the urinal device, the urinal device 800 transmits human body detection information indicating the existence of a person to the toilet device 2. May be good. The urinal device 800 may have a human sensor in the urinal device for a person in front of the urinal 801. The urinal device 800 may receive at least one of a communication radio wave from the toilet device 2 and a radio wave for wireless power feeding, and transmit the received radio wave intensity to the toilet device 2 at regular intervals. .. The second determination unit 41 of the toilet device 2 determines whether or not the radio wave intensity of the radio waves transmitted and received between the urinal device 800 and the toilet device 2 has fluctuated, and whether or not a person exists in the toilet space 100. It may be determined whether or not.

12 and 13 are examples in which the wireless power supply system 1 is applied to a building such as a house or a hotel. In the example shown in FIG. 12, the communication device 400 is a washbasin device 401 provided in a space 104 outside the toilet space 100 provided in the toilet device 2. The space 104 outside the toilet space 100 is a space adjacent to the toilet space 100. The toilet device 2 communicates with the washbasin device 401 using radio waves. The wash basin 401 may transmit human body detection information indicating the presence of a person to the toilet device 2 when a faucet device for supplying hot water or water to the wash basin 402 is used. The washroom device 401 receives at least one of a radio wave for communication and a radio wave for wireless power supply from the toilet device 2, and when it is determined that the received radio wave intensity has fluctuated, the toilet device obtains human body detection information. You may send to 2. The washbasin device 401 may transmit the radio wave intensity of the radio wave received from the toilet device 2 to the toilet device 2. The second determination unit 41 of the toilet device 2 determines whether or not there is a person in the space 104 by determining whether or not the radio wave intensity of the radio wave transmitted and received between the toilet device 401 and the toilet device 2 has changed. May be determined. The wash basin 401 and the wash basin 402 may be provided in the toilet space 100. In this case, the second determination unit 41 of the toilet device 2 determines whether or not the radio wave intensity of the radio waves transmitted and received between the washbasin device 401 and the toilet device 2 has fluctuated, and thus the second determination unit 41 in the toilet space 100. It may be determined whether or not there is a person in front of the basin 402.

In the example shown in FIG. 13, the communication device 400 is a bathroom device 403 provided in a space 105 outside the toilet space 100 provided in the toilet device 2. The space 105 outside the toilet space 100 is a space adjacent to the toilet space 100. For example, space 105 is a bathroom. The toilet device 2 communicates with the bathroom device 403 using radio waves. When the bathroom device 403 detects a person in the space 105, the bathroom device 403 may transmit the human body detection information indicating that the person exists to the toilet device 2. The bathroom device 403 receives at least one of a radio wave for communication and a radio wave for wireless power supply from the toilet device 2, and when it is determined that the received radio wave intensity has fluctuated, the human body detection information is transmitted to the toilet device. You may send to 2. The bathroom device 403 may transmit the radio wave intensity of the radio wave received from the toilet device 2 to the toilet device 2. The second determination unit 41 of the toilet device 2 determines whether or not the radio wave intensity of the radio wave transmitted and received between the bathroom device 403 and the toilet device 2 has changed, and thus determines whether or not a person exists in the space 105. May be determined. The toilet space 100 and the space 105 may be the same space. In this case, the second determination unit 41 of the toilet device 2 determines in the toilet space 100 whether or not the radio wave intensity of the radio waves transmitted and received between the bathroom device 403 and the toilet device 2 has changed. It may be determined whether or not a person exists.

The control unit 37 may operate with the DC power output from the power receiving unit 32. For example, when the remote control device 3 is not provided with the power storage unit 34, the control unit 37 operates with the DC power output from the power receiving unit 32. For example, when the remote control device 3 is wirelessly fed, the power storage unit 34 may be charged and the control unit 37 may be operated by the DC power output from the received power. The remote control device 3 may operate the control unit 37 with the electric power charged in the power storage unit 34 when the power is not supplied wirelessly.

The second determination unit 41 of the above embodiment may be provided in addition to the toilet device 11. For example, the second determination unit 41 may be provided in the remote control device 3. For example, the second determination unit 41 may be provided in the toilet space 100 other than the remote control device 3 and the toilet device 11. For example, the second determination unit 41 may be provided in a space outside the toilet space 100. For example, the second determination unit 41 may be provided in the communication device 400 installed in a space outside the toilet space 100.

In the first control device 9, when the first determination unit 40 detects a person and the second determination unit 41 does not detect the presence of a person, the second wireless power supply may be performed in the first power supply pattern. Then, the first control device 9 may perform the second wireless power supply in the second power supply pattern when at least the second determination unit 41 detects the presence of a person. The first control device 9 may change the amount of electric power in the case of performing the second wireless power supply based on the charge amount Q. For example, the first control device 9 may increase the electric energy of the second wireless power supply as the charge amount Q decreases. For example, the first control device 9 may select either the first power supply pattern or the second power supply pattern according to the charge amount Q.

For example, the control unit 13 includes a processor. For example, the processor is a CPU (Central Processing Unit) and an MPU (Micro Processing Unit). For example, the control unit 13 may be a microcontroller. The control unit 13 may include at least one of a non-volatile semiconductor and a volatile semiconductor. The control unit 13 may be realized by the processor executing the program. At least a part of the components of the control unit 13 may be realized by hardware, or may be realized by collaboration between software and hardware.

For example, the hardware is at least one of LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), and GPU (Graphics Processing Unit). The above program may be stored in the storage device in advance. The storage device is a non-transient storage medium. For example, the storage device is at least one of an HDD (Hard Disk Drive) and a flash memory. The program may be stored in a removable storage medium. In this case, the program may be installed in the storage device by mounting the storage medium in the drive device. The storage medium is a non-transient storage medium. For example, the recording medium is either a DVD or a CD-ROM.

1 ... wireless power supply system, 2 ... toilet device, 3 ... remote control device, 12 ... communication unit, 13 ... control unit, 14 ... power supply unit

Claims (15)

A wireless power supply system including a toilet device provided in a toilet space and a remote control device that is powered by radio waves from the toilet device.
A power supply unit provided in the toilet device to wirelessly supply the first electric energy by transmitting radio waves to the remote control device.
A determination unit that determines whether or not a person exists in a predetermined area based on fluctuations in the radio wave intensity of at least one of the radio waves of wireless power supply and the radio waves used for communication.
With
The power feeding unit
When at least the determination unit determines that a person exists in the predetermined area, wireless power supply is performed with a second electric energy less than the first electric energy amount, or wireless power supply to the remote control device is stopped. ,
Wireless power supply system. Further equipped with a human body detection sensor provided in the toilet space,
The predetermined area includes an area that cannot be detected by the human body detection sensor.
The wireless power supply system according to claim 1. The power feeding unit is said to be under a predetermined condition in which at least one of a case where the human body detection sensor detects the presence of the person and a case where the determination unit determines that the person exists in the predetermined area is satisfied. Wireless power supply is performed with the second power or less.
The wireless power supply system according to claim 2. The determination unit includes a first radio wave intensity, which is the intensity of the radio wave received by the remote control device from the toilet device, and a second radio wave intensity, which is the intensity of the radio wave received by the toilet device from the remote control device. When at least one of the radio wave intensities fluctuates, it is determined that a person exists in the predetermined area.
The wireless power supply system according to any one of claims 1 to 3. The remote control device further includes a power storage unit for charging the electric power supplied from the toilet device.
The toilet device has a control unit that determines whether or not to allow or reject the wireless power supply according to the charge amount of the power storage unit.
The wireless power supply system according to any one of claims 1 to 4. When the charge amount becomes the first threshold value or less, the control unit permits the wireless power supply to the remote control device, and the charge amount becomes the second threshold value or more higher than the first threshold value. In some cases, the wireless power supply to the remote control device is prohibited.
The wireless power supply system according to claim 5. The remote control device further includes a power storage unit for charging the electric power supplied from the toilet device.
Under the predetermined conditions, when the charge amount of the power storage unit becomes equal to or less than the threshold value, the power supply unit performs wireless power supply with a second power amount less than the first power amount and the charge amount of the power storage unit. If exceeds the threshold value, wireless power supply is not performed.
The wireless power supply system according to claim 3. The toilet device
It is equipped with a communication unit that communicates with communication equipment outside the toilet space.
The toilet device either permits or prohibits the wireless power supply to the remote control device based on the information received from the communication device via the communication unit.
The wireless power supply system according to any one of claims 1 to 7. The toilet device
It is equipped with a communication unit that communicates with communication equipment outside the toilet space.
Based on the information received from the communication device via the communication unit, the toilet device permits the remote control device to supply wireless power with the first electric energy, and permits wireless power supply with the second electric energy or less. , Prohibit any of the wireless power supplies,
The wireless power supply system according to any one of claims 1 to 8. The determination unit uses radio waves transmitted from at least one of the toilet device and the remote control device provided in the toilet space to determine whether or not a person exists in the predetermined area outside the toilet space. To judge,
The wireless power supply system according to any one of claims 1 to 8. The outside of the toilet space is a space adjacent to the toilet space.
The wireless power supply system according to any one of claims 8 to 10. The cycle of the radio wave transmitted from the power supply unit to the remote control device in the case of wireless power supply with the second power amount or less is the period of the radio wave transmitted from the power supply unit to the remote control device in the case of wireless power supply with the first power amount. Longer than the period of radio waves transmitted to
The wireless power supply system according to any one of claims 1 to 11. The period during which radio waves are transmitted from the power supply unit to the remote control device in the case of wireless power supply with the second electric energy or less is such that the radio waves are remote from the power supply unit in the case of wireless power supply with the first electric energy. Shorter than the period sent to the controller,
The wireless power supply system according to any one of claims 1 to 12. The radio wave intensity of the radio wave transmitted from the power feeding unit to the remote control device in the case of wireless power feeding with the second electric energy or less is controlled remotely from the power feeding unit in the case of wireless power feeding with the first electric energy. Lower than the strength of the radio waves transmitted to the device,
The wireless power supply system according to any one of claims 1 to 13. The power feeding unit includes an antenna that transmits radio waves to the remote control device.
The antenna is provided on either the left side or the right side of the toilet device when viewed from the user sitting on the toilet seat.
The wireless power supply system according to any one of claims 1 to 14.

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