Wireless power supply system, system, and transmitter

Abstract

To provide a problem in which radio waves transmitted by each of transmitters and receivers of a wireless power feeding system affect other wireless apparatuses.SOLUTION: A wireless power supply system comprises a plurality of transmitters, a plurality of receivers, and a control device capable of controlling the transmitters. The transmitters can wirelessly supply power to the receivers. The control device can perform control such that the transmitters do not transmit radio waves over a second period for each first period. In the second period, the control device executes carrier sense control in a space in which the transmitters and the receivers are arranged.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present disclosure relates to a wireless power supply system, a system, and a transmitter. [Background technology]

[0002] 2. Description of the Related Art Techniques for wirelessly transmitting power are known. Patent Document 1 discloses an electronic device and method capable of estimating the characteristics of a wireless propagation path and supplying power efficiently in accordance with the estimation results. Patent Document 2 discloses an electronic device capable of accurately performing carrier sensing to avoid interference with wireless systems. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-044873 A [Patent Document 2] JP 2021-151061 A Summary of the Invention [Problem to be solved by the invention]

[0004] In a wireless power supply system, there is a problem that radio waves transmitted by a transceiver may affect other wireless devices. Therefore, the present disclosure has been made to solve the above-mentioned problems, and has an object to provide a technology for suppressing the influence of radio waves transmitted by a transceiver on other wireless devices in a wireless power supply system. [Means for solving the problem]

[0005] A wireless power supply system comprising a plurality of transmitters, a plurality of receivers, and a control device capable of controlling the plurality of transmitters, wherein the plurality of transmitters are capable of wirelessly supplying power to the plurality of receivers, and the control device is capable of controlling, for each first period, the plurality of transmitters so as not to transmit radio waves over a second period, and during the second period, the control device performs carrier sense control within a space in which the plurality of transmitters and the plurality of receivers are arranged. Effect of the Invention

[0006] According to the present disclosure, in a wireless power supply system, it is possible to suppress the influence of radio waves transmitted from each transceiver on other wireless devices. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing the overall configuration of a WPT system 1 according to an embodiment of the present invention. [Diagram 2] 1 is a block diagram showing an example of the configuration of a transmitter 100 and a receiver 200. FIG. [Diagram 3] FIG. 2 is a block diagram showing the functional configuration of a control device C10. [Figure 4] FIG. 13 is a diagram showing the data structure of a WPT table C1012. [Diagram 5] 13 is a diagram showing the data structure of device table C1013. FIG. [Figure 6] 5 is a flowchart showing the operation of carrier sense processing (first embodiment). [Figure 7] 13 is a flowchart showing the operation of carrier sense processing (second embodiment). [Figure 8] FIG. 2 is a block diagram showing the basic hardware configuration of a computer 90. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In all the drawings explaining the embodiment, the same reference numerals are given to common components, and repeated explanations are omitted. Note that the following embodiment does not unduly limit the contents of the present disclosure described in the claims. In addition, not all of the components shown in the embodiment are essential components of the present disclosure. In addition, each figure is a schematic diagram and is not necessarily illustrated strictly.

[0009] <Summary> <1 Overall system configuration> FIG. 1 is a diagram showing the overall configuration of a WPT system 1 according to this embodiment.

[0010] The WPT system 1 shown in Fig. 1 includes, for example, a transmitter 100, a receiver 200, a first information processing device 300, a second information processing device 400, and a control device C10. The WPT system 1 shown in Fig. 1 is used, for example, in a building or a factory. Note that the connection between the transmitter 100 and the first information processing device 300, the connection between the first information processing device 300 and the second information processing device 400, and the connection between the control device C10 and the first information processing device 300 and the second information processing device 400 may be wired or wireless.

[0011] 1 shows an example in which the WPT system 1 includes three transmitters 100, but the number of transmitters 100 included in the WPT system 1 is not limited to three. The number of transmitters 100 included in the WPT system 1 may be two or less, or may be four or more.

[0012] 1 shows an example in which the WPT system 1 includes seven receivers 200, but the number of receivers 200 included in the WPT system 1 is not limited to seven. The number of receivers 200 included in the WPT system 1 may be six or less, or eight or more.

[0013] 1 shows an example in which the WPT system 1 includes two first information processing devices 300, but the number of first information processing devices 300 included in the WPT system 1 is not limited to two. The number of first information processing devices 300 included in the WPT system 1 may be one, or three or more.

[0014] The transmitter 100 transmits, for example, a power supply signal or a data signal (hereinafter collectively referred to as a wireless signal) to the receiver 200. The transmitter 100 transmits the power supply signal to the receiver 200 by radio waves in the 920 MHz band, for example. The transmitter 100 transmits the data signal to the receiver 200 by radio waves in the 2.4 GHz band, for example. The transmitter 100 may transmit the data signal by radio waves in the 920 MHz band.

[0015] The transmitter 100 may transmit a power supply signal to one receiver 200, for example, or may transmit a power supply signal to multiple receivers 200. The transmitter 100 may transmit a data signal to one receiver 200, for example, or may transmit a data signal to multiple receivers 200. The transmitter 100 may transmit the same data signal as another transmitter 100, for example, or may transmit a data signal different from that of the other transmitters 100. The transmitter 100 may transmit a predetermined command signal as a data signal to the receiver 200, for example, or may transmit a preset signal as a data signal to the receiver 200.

[0016] The transmitter 100 receives, for example, a data signal transmitted from the receiver 200. The transmitter 100 may receive, for example, a data signal transmitted from one receiver 200, or may receive data signals transmitted from a plurality of receivers 200. The transmitter 100 transmits the data signal transmitted from the receiver 200 to the first information processing device 300. The transmitter 100 transmits information related to the state of the transmitter 100 to the first information processing device 300.

[0017] The receiver 200 receives, for example, a power supply signal or a data signal transmitted from the transmitter 100. For example, if the receiver 200 has a battery, the receiver 200 converts the power supply signal transmitted from the transmitter 100 into electric power and stores the converted electric power in the battery. For example, if the receiver 200 has a predetermined sensor, the receiver 200 converts the power supply signal transmitted from the transmitter 100 into electric power and drives the sensor with the converted electric power.

[0018] The receiver 200 transmits, for example, information relating to the state of the receiver 200 or information relating to the measurement results of a sensor to the transmitter 100 as a data signal.

[0019] The first information processing device 300 is an information processing device that monitors the operation of the transmitter 100 and the receiver 200 housed in the WPT system 1. For example, the first information processing device 300 determines whether the transmitter 100 or the receiver 200 is in a preset state based on information about the state of the transmitter 100 and the receiver 200 transmitted from the transmitter 100. If it is determined that the transmitter 100 or the receiver 200 is in a preset state, the first information processing device 300 transmits predetermined information to the second information processing device 400.

[0020] In addition, the first information processing device 300 accumulates information about the transmitter 100 and the receiver 200 accommodated in the WPT system 1. For example, the first information processing device 300 stores information about the states of the transmitter 100 and the receiver 200 transmitted from the transmitter 100 in a storage unit provided in the first information processing device 300.

[0021] In addition, the first information processing device 300 controls the operation of the transmitter 100 accommodated in the WPT system 1.

[0022] Moreover, the first information processing device 300 controls the operation of the transmitter 100 accommodated in the WPT system 1. For example, the first information processing device 300 transmits a predetermined instruction or information to the transmitter 100.

[0023] In addition, the first information processing device 300 controls the operation of the second information processing device 400 .

[0024] The second information processing device 400 is, for example, an information processing device operated by an administrator of the WPT system 1. When the second information processing device 400 receives a notification from the first information processing device 300 that the transmitter 100, the receiver 200, or both of them housed in the WPT system 1 are in a predetermined state, the second information processing device 400 presents to the user that the transmitter 100, the receiver 200, or both of them are in the predetermined state.

[0025] Moreover, the second information processing device 400 analyzes information on the status of the transmitter 100 and the receiver 200 stored in the first information processing device 300, and presents predetermined information to the user. The predetermined information is, for example, the following. Information regarding placement of transmitter 100 Information regarding the placement of the receiver 200 Power consumption information Power intensity information

[0026] <1.1 Transmitter and receiver configuration> FIG. 2 is a block diagram showing an example of the configuration of the transmitter 100 and the receiver 200 shown in FIG. 1. As shown in FIG. 2, the transmitter 100 and the receiver 200 are, for example, spaced apart from each other at a predetermined interval. For example, the transmitter 100 and the receiver 200 are installed at a distance of about several meters apart. Specifically, for example, the transmitter 100 is fixedly installed at a predetermined high position provided in a high place indoors, for example, on a ceiling or a wall. The receiver 200 is installed in a predetermined device indoors, or placed near a device that requires power supply. The receiver 200 may also be carried by a user. The transmitter 100 transmits a power supply signal to the receiver 200 by radio waves of a predetermined frequency, for example, 920 MHz band. The receiver 200 converts the power supply signal transmitted from the transmitter 100 into power, and charges the device with the converted power, or supplies the converted power to the predetermined device.

[0027] The transmitter 100 includes, for example, an oscillator 101, a transmitting antenna 102, a microcomputer (controller) 103, a data transceiver 104, and a data transmitting / receiving antenna 105. The oscillator 101, the microcomputer 103, the data transceiver 104, and the data transmitting / receiving antenna 105, or at least any combination of these, may be mounted on, for example, a PCB (printed circuit board).

[0028] The oscillator 101 oscillates a signal in a predetermined frequency band, for example, the 920 MHz band. The oscillated signal may be amplified and unnecessary frequency components may be removed, if necessary.

[0029] The transmitting antenna 102 is formed so as to be capable of efficiently transmitting radio waves in the 920 MHz band, for example. The transmitting antenna 102 radiates a signal oscillated by an oscillator 101 as a power supply signal.

[0030] The microcomputer 103 controls the operation of the transmitter 100. The microcomputer 103 is realized by, for example, a single board computer equipped with an ARM processor. The microcomputer 103 controls, for example, the transmission of radio waves by the transmission antenna 102.

[0031] The data transceiver 104 performs processes such as converting digital data to analog data, modulating analog data, etc. The data transceiver 104 also performs processes such as demodulating a data signal received by the data transceiver antenna 105, and digitizing the demodulated data. For example, the data transceiver 104 extracts a predetermined signal from the data signal received by the data transceiver antenna 105, converts it into digital data, and transmits it to the microcomputer 103.

[0032] The data transmission / reception antenna 105 is formed to be capable of efficiently transmitting and receiving radio waves in the 2.4 GHz band, for example. The data transmission / reception antenna 105 radiates a data signal supplied from the data transceiver 104. In addition, the data transmission / reception antenna 105 receives a data signal transmitted from the receiver 200.

[0033] The receiver 200 includes, for example, a receiving antenna 201, a rectifier 202, a power management unit 203, a battery 204, a microcomputer 205, a data transceiver 206, and a data transmitting / receiving antenna 207. The receiving antenna 201, the rectifier 202, the power management unit 203, the battery 204, the microcomputer 205, the data transceiver 206, and the data transmitting / receiving antenna 207, or at least any combination of these, may be mounted on, for example, a PCB or an FPC (flexible printed circuit board).

[0034] The receiving antenna 201 is formed so as to be able to efficiently receive radio waves in the 920 MHz band, for example. The receiving antenna 201 receives the power supply signal radiated from the transmitting antenna 102.

[0035] The rectifier 202 rectifies the radio waves received as a power supply signal and converts them into a DC voltage.

[0036] The power management unit 203 manages the DC voltage. For example, the power management unit 203 controls a charging voltage based on the DC voltage. The power management unit 203 charges the battery 204 by controlling the charging voltage. In addition, for example, when the battery 204 stores power equal to or greater than a predetermined capacity, the power management unit 203 supplies the DC voltage to a connected member.

[0037] Furthermore, the power management unit 203 releases the power stored in the battery 204 under the control of the microcomputer 205 .

[0038] The battery 204 stores power in response to an instruction from the power management unit 203. The battery 204 also discharges the stored power in response to an instruction from the power management unit 203.

[0039] The microcomputer 205 controls the operation of the receiver 200. The microcomputer 205 is driven by a DC voltage supplied from the power management unit 203 or by power stored in the battery 204. The microcomputer 205 controls the power management unit 203 to cause the battery 204 to release the power stored therein.

[0040] For example, various sensors can be connected to the receiver 200. For example, a heat sensor, a temperature sensor, a light sensor, a humidity sensor, a vibration sensor, and the like are connected to the receiver 200. The sensors connected to the receiver 200 are driven by, for example, a direct current voltage supplied from the power management unit 203 or power discharged from the battery 204. The microcomputer 205 continuously or intermittently monitors the voltage value at a predetermined portion of the receiver 200, the status of the sensor connected to the receiver 200, information detected by the sensor, and the like. The microcomputer 205 transmits the voltage value at a predetermined portion of the receiver 200, the status of the sensor connected to the receiver 200, information detected by the sensor, and the like as digital data to the data transceiver 206. The sensor may be built into the receiver 200.

[0041] The data transceiver 206 performs processes such as converting digital data supplied from the microcomputer 205 into analog data and modulating the analog data. The data transceiver 206 also performs processes such as demodulating a data signal received by a data transceiver antenna 207 and digitizing the demodulated data. The data transceiver 206 is driven by, for example, a DC voltage supplied from the power management unit 203 or power discharged from the battery 204.

[0042] The data transmission / reception antenna 207 is formed to be capable of efficiently transmitting and receiving radio waves in the 2.4 GHz band, for example. The data transmission / reception antenna 207 radiates a data signal supplied from the data transceiver 206. In addition, the data transmission / reception antenna 207 receives a data signal transmitted from the transmitter 100. For example, the data transmission / reception antenna 207 is driven by a DC voltage supplied from the power management unit 203, or by power discharged from the battery 204.

[0043] In addition, in each of the above-mentioned embodiments, the application to the so-called WPT system 1 in which the transmission power consisting of an AC signal is wirelessly transmitted from the transmitter 100 to the receiver 200 has been described, but it is naturally possible to apply it to a system that provides power to the receiver 200 by other methods. Since such systems are known, detailed description will be omitted. As an example, there is a system that transmits power generated by solar power generation to the receiver 200 regardless of whether it is wired or wireless, and further, a system that transmits power to the receiver 200 by laser light regardless of whether it is wired or wireless. In addition, it is also applicable to a configuration in which vibration or sound is given to the receiver 200 and the receiver 200 converts the power of the vibration or the like into power. In addition, it is naturally applicable to a system that uses a known non-contact power supply technology other than the system that wirelessly receives the transmission power consisting of an AC signal, for example, a non-contact power supply technology using a magnetic field coupling method.

[0044] <Configuration of control device C10> The control device C10 is an information processing device including a storage unit C101 and a control unit C104. In this disclosure, the control device C10 is disclosed as an information processing device different from the first information processing device 300 and the second information processing device 400, but the first information processing device 300 or the second information processing device 400 may have the functions of the control device C10. In other words, the control device C10 may be the first information processing device 300 or the second information processing device 400. Furthermore, the functions of the control device C10 may be included in at least one of the multiple transmitters 100 and may be realized as part of the functions of the transmitter 100. In other words, the processes executable by the control device C10 may be executed by the transmitter 100. In other words, the transmitter 100 may include as a part thereof the hardware and software configuration of the control device C10. For example, any one of the multiple transmitters 100 may act as a parent device (host) of the other transmitters 100, fulfill the functions of the control device C10, and execute various processes. In other words, the transmitter 100 acting as a parent device includes, as a part thereof, hardware and software configuration for functioning as the control device C10. All of the transmitters 100 may be configured to include a hardware and software configuration for functioning as the control device C10. In this case, a selected transmitter 100 may function as a master device and perform the functions of the control device C10. The master device may be selected by an input operation by the user. FIG. 3 is a block diagram showing the functional configuration of the control device C10.

[0045] <Configuration of the memory unit C101 of the control device C10> The memory unit C101 of the control device C10 includes an application program C1011, a WPT table C1012, and a device table C1013.

[0046] The application program C1011 is a program for causing the control unit C104 of the control device C10 to function as each functional unit. The application program C1011 includes applications such as a web browser application.

[0047] The WPT table C1012 is a table for storing and managing information (transmitter / receiver information) regarding the transmitters and receivers included in the WPT system 1. Specifically, it stores what transmitters and receivers are associated with which WPT systems 1. The WPT table C1012 is a table having the transceiver ID as a primary key, and columns for the transceiver ID, location area, and transceiver data. The user transmits a request for registering a device including the transceiver information to the control device C10 via an information processing terminal. The device registration control unit C1041 of the control device C10 stores the received transceiver information in the location area and transceiver data items of the WPT table 1021. FIG. 4 is a diagram showing the data structure of the WPT table C1012.

[0048] The transceiver ID is an item for storing transceiver identification information for identifying a transceiver. The transceiver identification information is an item in which a unique value is set for each piece of transceiver information. The location area is an item that stores information about the area where the transceiver is located. The location area includes area identification information that identifies the area. The area indicates any physical area in which a user can be located, such as a part or the whole of a space such as a room or a hallway, a seat placed in a room, a predetermined area range in an outdoor space, a part or the whole of a vehicle space such as an automobile, a bus, or a train, or a seat in an automobile, a bus, or a train. The area identification information is information for identifying the physical area in an identifiable manner. The transceiver data is an item that stores information about the transceiver. -Information indicating whether it is a transmitter or a receiver. - Individual identification information to identify an individual transmitter or receiver. Information about radio waves, such as the frequency band used by a transmitter or receiver. For receivers, information on remaining battery capacity, sensing devices, actuators, etc. Any other information associated with the transmitter and receiver may be stored.

[0049] The device table C1013 is a table for storing and managing information (device information) about wireless devices not included in the WPT system 1. The device table C1013 is a table having the device ID as a primary key, and columns for device ID, location area, and device data. FIG. 5 is a diagram showing the data structure of device table C1013.

[0050] The device ID is an item that stores device identification information for identifying a wireless device. The device identification information is an item in which a unique value is set for each piece of device information. The wireless devices in this disclosure are mainly LPWA (Low Power Wide Area Network) devices that use wireless communication technology that enables long-distance data communication with low power consumption. The location area is an item that stores information about the area where the wireless device is located. The location area includes area identification information that identifies the area. The area indicates any physical area in which a user can be located, such as a part or the whole of a space such as a room or a hallway, a seat placed in a room, a predetermined area range in an outdoor space, a part or the whole of a vehicle space such as an automobile, a bus, or a train, or a seat in an automobile, a bus, or a train. The area identification information is information for identifying the physical area. The device data is an item that stores information about a wireless device. - Individual identification information to identify individual wireless devices. Information about radio waves, such as the frequency bands used by wireless devices. Information about the type of wireless device, such as wireless microphone, wireless LAN, Bluetooth (registered trademark) device, etc.

[0051] <Configuration of the control unit C104 of the control device C10> The control unit C104 of the control device C10 includes a device registration control unit C1041 and an equipment registration control unit C1042. The control unit C104 executes an application program C1011 stored in the storage unit C101 to realize each functional unit.

[0052] A control device C10 is controllable via wired connections to the multiple transmitters. Specifically, the control device C10 may be wired-connected to a plurality of transmitters 100 based on any wired connection standard such as Ethernet, USB (Universal Serial Bus), serial connection, etc. The control unit C104 of the control device C10 can control the transmission of a power supply signal and the transmission and reception of a data signal by the transmitter 100 by transmitting a control signal to the transmitter 100 via the wired connection.

[0053] A control device C10 is capable of controlling the multiple transmitters via wireless connections. Specifically, the control device C10 may be wirelessly connected to a plurality of transmitters 100 based on any wireless connection standard such as WiFi, Bluetooth (registered trademark), NFC (Near Field Communication), Zigbee (registered trademark), Z-Wave, LTE, etc. The control unit C104 of the control device C10 can control the transmission of a power supply signal and the transmission and reception of a data signal by the transmitter 100 by transmitting a control signal to the transmitter 100 via the wireless connection.

[0054] A control device C10 is capable of controlling the multiple transmitters via wired connections. Specifically, the control device C10 may be wired-connected to a plurality of transmitters 100 based on any wired connection standard such as Ethernet, USB (Universal Serial Bus), serial connection, etc. The control unit C104 of the control device C10 can control the transmission of a power supply signal and the transmission and reception of a data signal by the transmitter 100 by transmitting a control signal to the transmitter 100 via the wired connection.

[0055] A control device C10 is capable of controlling the multiple transmitters via wireless connections. Specifically, the control device C10 may be wirelessly connected to a plurality of transmitters 100 based on any wireless connection standard such as WiFi, Bluetooth (registered trademark), NFC (Near Field Communication), Zigbee (registered trademark), Z-Wave, LTE, etc. The control unit C104 of the control device C10 can control the transmission of a power supply signal and the transmission and reception of a data signal by the transmitter 100 by transmitting a control signal to the transmitter 100 via the wireless connection.

[0056] <Operation of the control device C10> The control of the transmitter 100 by the control unit C104 of the control device C10 will be described.

[0057] The control unit C104 of the control device C10 can control the multiple transmitters not to transmit radio waves over the second period for each first period. The control unit C104 of the control device C10 executes carrier sense control in a space in which the multiple transmitters and multiple receivers are arranged during the second period. The carrier sense control is a control for determining whether or not another wireless device is transmitting radio waves in a frequency band that may interfere with the frequency band of the radio waves output by the transmitter. Specifically, the control unit C104 of the control device C10 performs control to detect surrounding wireless radio waves before the transmitter 100 transmits a power supply signal and a data signal. Specifically, the control unit C104 of the control device C10 controls the transmitter 100 and the receiver 200 not to transmit radio waves for a second period (50 milliseconds) for each first period (4 seconds). The control unit C104 of the control device C10 causes the transmitter 100 to detect wireless radio waves present in the space during the second period in which the WPT system 1 does not transmit radio waves. The transmitter 100 detects wireless radio waves using the data transceiver 104. This allows the control unit C104 of the control device C10 to detect whether or not there is another operating wireless device in the space and what frequency band the wireless device is using. The control unit C104 of the control device C10 can detect the presence of other wireless devices present in the surroundings for each of the multiple transmitters 100. Moreover, the detection of radio waves may be performed not by the data transceiver 104 of the transmitter 100 but by a radio wave receiver provided in the control device C10 or in another device. Specifically, the control unit C104 of the control device C10 detects whether or not radio waves are present in the vicinity of the 920 MHz band used for transmitting and receiving a power supply signal and the 2.4 GHz band used for transmitting and receiving a data signal during the second period. For example, the control unit C104 of the control device C10 detects whether or not radio waves are present in frequency bands that may cause interference, including frequency bands such as the 900 MHz band, 920 MHz band, and 880 MHz band, as well as distant ranges such as the 5 GHz band. For example, the control unit C104 of the control device C10 monitors the target frequency band and compares the strength of the detected wireless signal with a predetermined threshold. The control unit C104 of the control device C10 determines that another wireless device is present when a wireless signal with a signal strength equal to or greater than the predetermined threshold is detected. The control unit C104 of the control device C10 may also determine that another wireless device is present when a detected wireless signal contains a predetermined signal pattern. The control unit C104 of the control device C10 determines that no other wireless device is present in other cases.

[0058] The control unit C104 of the control device C10 dynamically controls at least one of the first period and the second period based on the result of the carrier sense control. Specifically, the control unit C104 of the control device C10 controls the first period and the second period depending on the presence or absence of other wireless devices present in the space detected by carrier sense control. For example, when the control unit C104 of the control device C10 detects the presence of another wireless device, the control unit C104 shortens the first period and lengthens the second period. This allows the control unit C104 of the control device C10 to detect the state of the radio waves used by the other wireless device in more detail during the second period. Furthermore, when the control unit C104 of the control device C10 cannot detect a wireless signal during the second period, it determines that no other wireless device is present.

[0059] The control unit C104 of the control device C10 executes control for notifying an external device such as a user of the control state. The control unit C104 of the control device C10 causes a display device such as an LED provided in the control device C10 to light up in a predetermined color or in a predetermined blinking pattern (first notification pattern) throughout the period during which carrier sense control is being performed. When the control unit C104 of the control device C10 detects that another wireless device is transmitting radio waves, it causes an LED or the like provided on the control device C10 to light up in a predetermined color or in a predetermined blinking pattern (first notification pattern) for a predetermined period of time. When the control unit C104 of the control device C10 executes control (radio wave stop step) so as not to transmit radio waves to the transmitter 100, the LED or the like provided in the control device C10 is lit in a predetermined color or lit in a predetermined blinking pattern (third notification pattern) over the period during which the radio waves are stopped. When the transmitter 100 is not transmitting radio waves, the control unit C104 of the control device C10 may light the LED or the like provided in the control device C10 in a predetermined color or light it in a predetermined blinking pattern (third notification pattern) to indicate that no radio waves are being transmitted. The control unit C104 of the control device C10 may control a display device such as an LED provided in the transmitter 100 instead of the display device provided in the control device C10. The control unit C104 of the control device C10 may control a display device such as an LED provided in the receiver 200 instead of the display device provided in the control device C10. The control unit C104 of the control device C10 may display the control state on a display device such as a display. Further, the control unit C104 of the control device C10 may display the control state on an information processing terminal owned by a user or the like. Thereby, the user can visually confirm the control state of the control device C10.

[0060] <Operation of the WPT System 1> Hereinafter, each process of the WPT system 1 will be described. FIG. 6 is a flowchart showing the operation of the carrier sense process (first embodiment). FIG. 7 is a flowchart showing the operation of the carrier sense process (second embodiment).

[0061] <Carrier Sense Process (First Embodiment)> The carrier sense process (first embodiment) is a process for determining whether another wireless device is transmitting radio waves in a frequency band that can interfere with the frequency band of the radio waves output by the transmitter.

[0062] <Outline of the Carrier Sense Process (First Embodiment)> The carrier sense processing (first embodiment) is a series of processes that accepts input operations from a user for other wireless devices located in the space where the transmitter and receiver are present, stores information about the accepted wireless devices, acquires the stored wireless device information, notifies an administrator as to whether or not the transmitter and receiver need to stop radio wave transmission based on the wireless device information, accepts an approval operation for the suspension, stops the transmitter and receiver radio wave transmission, and, after the suspension, notifies an administrator as to whether or not the transmitter and receiver need to resume radio wave transmission, accepts an approval operation for the suspension, and resumes the transmitter and receiver radio wave transmission.

[0063] <Details of Carrier Sense Processing (First Embodiment)> The carrier sense process (first embodiment) will be described in detail below.

[0064] In step S101, the control unit C104 of the control device C10 executes a device storage step of storing information about a wireless device. Specifically, the user can transmit the location area, device data, etc. of any wireless device to the control device C10 by operating the input device of the information processing terminal. The device registration control unit C1042 of the control device C10 stores the location area and device data of the received wireless device in the location area and device data items of the device table C1013, respectively. This allows the user to register a new wireless device as device information in the device table C1013. Note that registration of a wireless device does not necessarily have to be performed during carrier sense processing (first embodiment), and may be configured to be performed at any timing.

[0065] In step S102, the control unit C104 of the control device C10 executes a device receiving step of receiving, from the user, an input operation of the information on the wireless device stored in the device storing step. Specifically, a user operates an input device of an information processing terminal placed in a specific conference room or the like to input the URL of a page (input operation processing page) for executing input operation processing into a web browser or the like, and opens the input operation processing page. The control unit of the information processing terminal transmits a request for opening the input operation processing page to the control device C10. The control unit C104 of the control device C10 searches the location area item of the device table C1013 based on the location area of ​​the specific conference room or the like based on the received request, and acquires one or more pieces of device information. Based on the acquired one or more pieces of device information, the control unit C104 of the control device C10 generates an input operation processing page that displays a list of one or more wireless devices present in the specific conference room or the like in a selectable manner, and transmits it to the information processing terminal. The control unit of the information processing terminal displays the received input operation processing page on a display. A user operates an input device of the information processing terminal to select a desired wireless device from one or more wireless devices displayed in a list. That is, a user operates an input device of the information processing terminal to select some or all of the wireless devices to be used from one or more wireless devices located in a desired conference room, etc. For example, when a user uses a wireless microphone in a conference room, the user operates an input device of the information processing terminal to select the wireless microphone as the wireless device. The user operates the input device of the information processing terminal to input the usage period of the selected wireless device in the usage period field provided on the input operation processing page. For example, if the user wants to use the wireless microphone for one hour from the current time, the user operates the input device of the information processing terminal to input the usage period value of "1 hour." The control unit of the information processing terminal transmits the device IDs of one or more wireless devices selected by the user and the input usage periods to the control device C10. The control unit C104 of the control device C10 receives and accepts the device IDs and usage periods of the one or more wireless devices.

[0066] A user may use his / her own information processing terminal (user terminal) such as a smartphone, PC, etc. to input information about a location area that identifies a specific conference room, etc., to open an input operation processing page. The user can use any information processing terminal to select any wireless device located in the specific conference room, etc.

[0067] The user may operate the input device of the information processing terminal to input information regarding whether or not a specific conference room is used and the period of use. In this case, the input device of the information processing terminal transmits a request including the location area of ​​the specific conference room and the period of use of the specific conference room to the control device C10. The control unit C104 of the control device C10 searches the location area item of the device table C1013 based on the received location area, and acquires and accepts the device IDs of all wireless devices present in the specific conference room. In this case, the control unit C104 of the control device C10 regards the usage period of all acquired wireless devices as the usage period of the specific conference room. The control unit C104 of the control device C10 acquires and accepts the device IDs and usage periods of all wireless devices present in the specific conference room. It should be noted that it is not necessary for the user to input the usage period. The usage period may start when the user operates an input device of the information processing terminal. The end of the usage period may be determined by receiving an input operation by the user on the input device of the information processing terminal. For example, the usage period may be ended by the user pressing an "End use" button or the like displayed on the information processing terminal.

[0068] In step S103, the control unit C104 of the control device C10 executes a device acquisition step of acquiring information about other wireless devices in the space. Specifically, the control unit C104 of the control device C10 searches the device ID item in the device table C1013 based on the device IDs of some or all of the wireless devices located in a specific conference room, etc., acquired in step S101, and acquires the location area and device data. This allows the control unit C104 of the control device C10 to acquire information on some or all of the wireless devices located in a specific conference room, etc.

[0069] In step S103, a device acquisition step executes a step of acquiring information on the location, frequency band, and operation period of the wireless device. Specifically, the control unit C104 of the control device C10 acquires information on the frequency bands of wireless devices included in the device data of some or all of the wireless devices located in a specific conference room, etc. Also, the control unit C104 specifies and accepts the usage periods of one or more wireless devices accepted in step S101 as the operation periods of the wireless period.

[0070] In step S103, a device obtaining step executes a step of obtaining information on the wireless device accepted in the device accepting step. Specifically, if device information of a wireless device is stored in the device table C1013 in step S101, the control unit C104 of the control device C10 acquires the device data stored in the device table C1013.

[0071] In step S104, prior to the radio wave stopping step, the control unit C104 of the control device C10 executes a stop presenting step of presenting to a predetermined administrator information indicating that control is to be performed so that the multiple transmitters do not transmit radio waves. Specifically, the control unit C104 of the control device C10 searches the location area and transceiver data items of the WPT table C1012 based on the location area and device data of the wireless device acquired in step S103. Based on the frequency band of the wireless radio waves included in the device data, the control unit C104 of the control device C10 searches the WPT table C1012 for records related to transceiver data including a frequency band that may interfere with the frequency band of the wireless radio waves. Specifically, the control unit C104 of the control device C10 searches the WPT table C1012 for and identifies the transmitter 100 and the receiver 200 that at least partially overlap with the frequency band of the wireless radio waves of the wireless device included in the device data. The control unit C104 of the control device C10 notifies the information processing terminal of the user of the administrator associated with the identified transmitter 100 and receiver 200 of information indicating that the transmitter 100 and receiver 200 will be controlled so as not to transmit radio waves. For example, the control unit C104 of the control device C10 transmits a message such as "Radio wave transmission from transmitter XX and receiver XX located in area XX will be stopped. Are you sure?" to the administrator's information processing terminal. The information processing terminal displays the received message and presents it to the administrator. The administrator includes a person who has the authority to manage radio wave transmission in the location area accepted in step S101, a licensee who has a radio-related qualification or license such as a radio station license, etc. The administrator includes a person who operates and manages the specified transmitter 100 and receiver 200.

[0072] In step S105, the control unit C104 of the control device C10 executes a stop approval step of receiving, in response to the stop presentation step, an approval operation from a predetermined administrator approving control so that a plurality of transmitters do not transmit radio waves. Specifically, the administrator checks the message sent to the information processing terminal and selects the "Approve Stop" button displayed on the information processing terminal. The control unit of the information processing terminal transmits a request to stop the transmission of radio waves to the control device C10.

[0073] In step S106, the radio wave stopping step executes a step of controlling the multiple transmitters not to transmit radio waves based on the information of the wireless device acquired in the device acquiring step, in response to the approval operation accepted in the stop approval step. Specifically, upon receiving the request, the control unit C104 of the control device C10 stops radio wave transmission from the transmitter 100 and the receiver 200 identified in step S104. Note that the control unit C104 of the control device C10 may automatically stop radio wave transmission from the transmitter 100 and the receiver 200 throughout the operation period of the wireless device identified in step S103. In other words, in stopping the transmission of wireless radio waves, the processes of steps S104 and S105 may be omitted. As a result, the control unit C104 of the control device C10 controls the multiple transmitters not to transmit radio waves based on the location, frequency band, and operating period of the wireless device, so that the radio waves transmitted by the multiple transmitters do not interfere with the radio waves of the wireless device.

[0074] In step S107, the control unit C104 of the control device C10 executes a restart indication step of indicating to a predetermined administrator that a plurality of transmitters are to be controlled to transmit radio waves. Specifically, the user operates an input device of an information processing terminal installed in a specific conference room or the like to input information indicating that the use of the wireless device located in the specific conference room or the like has been ended into an input operation processing page. For example, the user presses an "End use" button or the like displayed on the information processing terminal. The control unit of the information processing terminal transmits a request to resume radio wave transmission to the control device C10. The control unit C104 of the control device C10 notifies the information processing terminal of the user of the administrator associated with the identified transmitter 100 and receiver 200 of information indicating that radio wave transmission will be started to the transmitter 100 and receiver 200. For example, the control unit C104 of the control device C10 transmits a message such as "Radio wave transmission from transmitter XX and receiver XX located in area XX will be resumed. Is this OK?" to the administrator's information processing terminal. The information processing terminal displays the received message and presents it to the administrator. The control unit C104 of the control device C10 may automatically transmit a message to the information processing terminal of the administrator after the operation period specified in step S103 has elapsed, without accepting an input operation by the user.

[0075] In step S108, the control unit C104 of the control device C10 executes a restart approval step of accepting an approval operation from a predetermined administrator for approving control so that a plurality of transmitters transmit radio waves in response to the restart presentation step. Specifically, the administrator checks the message displayed on the information processing terminal and selects the "Approve button" displayed on the information processing terminal. The control unit of the information processing terminal transmits a request to resume radio wave transmission to the control device C10.

[0076] In step S109, the control unit C104 of the control device C10 executes a radio wave resumption step of transmitting radio waves for power supply from the multiple transmitters to the multiple receivers in response to the approval operation received in the resumption approval step. Specifically, when the request is received, the control unit C104 of the control device C10 starts radio wave transmission from the identified transmitter 100 and receiver 200.

[0077] In step S109, the control unit C104 of the control device C10 executes a determination step of determining, based on the wireless device information acquired in the device acquisition step, that the wireless device is not operating after a predetermined period has elapsed since the radio wave stopping step. Specifically, the control unit C104 of the control device C10 may automatically start radio wave transmission from the transmitter 100 and the receiver 200 after the operation period specified in step S103 has elapsed. That is, when the transmission of radio waves is resumed, the processes of steps S107 and S108 may be omitted.

[0078] In step S109, if the control unit C104 of the control device C10 determines in the determination step that the wireless device is not operating, it executes a radio wave resumption step of transmitting radio waves for power supply from the multiple transmitters to the multiple receivers. Specifically, the control unit C104 of the control device C10 detects radio waves of wireless devices in the area where the control device C10 is located, and determines whether or not the wireless devices are operating in the area where the control device C10 is located. For example, the control unit C104 of the control device C10 may determine whether or not the wireless devices are operating by detecting the presence or absence of radio waves in the vicinity of a frequency band of the wireless waves included in the device information acquired in step S103. When the control unit C104 of the control device C10 determines that the wireless device is not operating, it automatically starts radio wave transmission from the transmitter 100 and the receiver 200. As a result, even if the transmitter stops transmitting radio waves to reduce the impact on other wireless devices, the transmitter can resume wireless power supply while reducing radio interference with the other wireless devices.

[0079] <Carrier Sense Processing (Second Embodiment)> The carrier sense process (second embodiment) is a process for determining whether or not another wireless device is transmitting radio waves in a frequency band that may interfere with the frequency band of the radio waves output by the transmitter.

[0080] <Overview of Carrier Sense Processing (Second Embodiment)> The carrier sense processing (second embodiment) is a series of processes that acquires reservation information regarding the planned use of other wireless devices present in the space in which the transmitter and receiver are located, stops radio wave transmission from the transmitter and receiver at the start date and time of the scheduled information, and resumes radio wave transmission from the transmitter and receiver at the end date and time of the scheduled information.

[0081] <Details of Carrier Sense Processing (Second Embodiment)> The carrier sense process (second embodiment) will be described in detail below.

[0082] In step S301, the control unit C104 of the control device C10 executes a reservation acquisition step of acquiring reservation information regarding a schedule for using wireless devices present in a space. Specifically, the control unit C104 of the control device C10 searches the WPT table C1012 and acquires, for each of the transmitter 100 and the receiver 200, information on the location area and the transmitter / receiver data. The control unit C104 of the control device C10 accesses a conference room reservation management system (not shown) or the like based on the acquired location area, and acquires information regarding the schedule of use of the location area in which the transmitter 100 and receiver 200 are located. The control unit C104 of the control device C10 searches the location area item of the device table C1013 based on the acquired location area, and acquires device data. As a result, the control unit C104 of the control device C10 can obtain and identify, for each area in which the transmitter 100 and receiver 200 are present, equipment data of wireless devices that may be used during the planned period of use of the area (equipment data of wireless devices present in the area), along with reservation information regarding the planned period of use of the area.

[0083] In step S302, the control unit C104 of the control device C10 executes a radio wave stopping step to control the multiple transmitters not to transmit radio waves so that the radio waves for supplying power from the multiple transmitters to the multiple receivers do not interfere with the radio waves of the wireless device, based on the reservation information acquired in the reservation acquisition step. Specifically, the control unit C104 of the control device C10 determines, based on the reservation information and equipment data acquired in step S301, whether or not there is a risk of interference between the frequency band of the radio waves used by the transmitter 100 and the receiver 200 and the frequency band of the radio waves of a wireless device present in the area where the transmitter 100 and the receiver 200 are located. Specifically, the control unit C104 of the control device C10 determines whether or not the frequency band of the radio waves used by the transmitter 100 and the receiver 200 at least partially overlaps with the frequency band of the radio waves of the wireless device included in the equipment data. When the control unit C10 determines that the transmitter 100 and the receiver 200 interfere with the wireless device, the control unit C104 controls the transmitter 100 and the receiver 200 not to transmit wireless signals for the usage period included in the reservation information. Specifically, the control unit C104 of the control unit C10 controls the transmitter 100 and the receiver 200 to stop transmitting wireless signals.

[0084] In step S302, the radio wave stopping step identifies the frequency band and operating period of the wireless device depending on the planned use of the space contained in the reservation information acquired in the reservation acquisition step, and executes a step of controlling the multiple transmitters not to transmit radio waves so that radio waves for supplying power from the multiple transmitters to the multiple receivers do not interfere with the radio waves of the wireless device. Specifically, the reservation information acquired by the control unit C104 of the control device C10 in step S301 may include a device ID for identifying a wireless device to be used during a period of scheduled use. The control unit C104 of the control device C10 acquires device data by searching the device ID in the device table C1013 based on the acquired device ID. In this case, the control unit C104 of the control device C10 judges, based on the reservation information and device data acquired in step S301, whether or not there is a risk of interference between the frequency band of the radio waves used by the transmitter 100 and the receiver 200 and the frequency band of the radio waves of a wireless device that is present in the area where the transmitter 100 and the receiver 200 are located and that is scheduled to be used. In other words, the control unit C104 of the control device C10 judges whether or not there is interference not for all wireless devices present in the area, but only for wireless devices that are scheduled to be used. When the control unit C10 determines that the transmitter 100 and the receiver 200 interfere with the wireless device, the control unit C104 controls the transmitter 100 and the receiver 200 not to transmit wireless signals for the usage period included in the reservation information. Specifically, the control unit C104 of the control unit C10 controls the transmitter 100 and the receiver 200 to stop transmitting wireless signals.

[0085] In step S303, the control unit C104 of the control device C10 compares the usage period of the area in which the transmitter 100 and the receiver 200 are located, which is included in the reservation information, with the current date and time to determine whether the usage period of the area has elapsed. If the control unit C104 of the control device C10 determines that the usage period of the area has elapsed, it resumes transmission of wireless signals from the transmitter 100 and the receiver 200 that are in the area. As a result, the control unit C104 of the control device C10 can suppress radio interference with other wireless devices in the area in which the transmitter 100 and the receiver 200 are present by stopping the transmission of wireless signals by the transmitter 100 and the receiver 200 for a reservation period in accordance with the reservation information. In addition, the transmission of wireless signals by the transmitter 100 and the receiver 200 can be automatically resumed after the reservation period ends. As a result, the control unit C104 of the control device C10 can minimize the period in which the transmitter 100 and the receiver 200 cannot transmit wireless signals and do not function.

[0086] In the carrier sense process (second embodiment), similarly to the carrier sense process (first embodiment), a stop indication step (S104) and a stop approval step (S105) may be performed prior to the radio wave stop step of step S302. Also, a resume indication step (S107) and a resume approval step (S108) may be performed prior to the radio wave resume step of step S303.

[0087] <Basic computer hardware configuration> 8 is a block diagram showing the basic hardware configuration of a computer 90. The computer 90 includes at least a processor 901, a main storage device 902, an auxiliary storage device 903, and a communication IF 991 (interface). These are electrically connected to each other by a communication bus 921.

[0088] The processor 901 is hardware for executing an instruction set described in a program, and is composed of an arithmetic unit, a register, a peripheral circuit, and the like.

[0089] The main memory device 902 is for temporarily storing programs, data to be processed by the programs, etc. For example, it is a volatile memory such as a DRAM (Dynamic Random Access Memory).

[0090] The auxiliary storage device 903 is a storage device for saving data and programs, such as a flash memory, a hard disk drive (HDD), a magneto-optical disk, a CD-ROM, a DVD-ROM, or a semiconductor memory.

[0091] The communication IF 991 is an interface for inputting and outputting signals for communicating with other computers via a network using a wired or wireless communication standard. The network is composed of the Internet, a LAN, various mobile communication systems constructed by wireless base stations, etc. For example, the network includes 3G, 4G, 5G mobile communication systems, LTE (Long Term Evolution), wireless networks that can connect to the Internet via a specified access point (e.g., Wi-Fi (registered trademark)), etc. In the case of wireless connection, communication protocols include, for example, Z-Wave (registered trademark), ZigBee (registered trademark), Bluetooth (registered trademark), etc. In the case of wired connection, the network also includes a network that is directly connected by a USB (Universal Serial Bus) cable or the like.

[0092] It should be noted that the computer 90 can be virtually realized by distributing all or part of each hardware configuration among multiple computers 90 and connecting them together via a network. In this way, the computer 90 is a concept that includes not only a computer 90 housed in a single housing or case, but also a virtualized computer system.

[0093] <Basic functional configuration of computer 90> A description will now be given of the functional configuration of a computer realized by the basic hardware configuration (FIG. 8) of a computer 90. The computer comprises at least the functional units of a control unit, a storage unit, and a communication unit.

[0094] The functional units of the computer 90 can also be realized by distributing all or part of the functional units among multiple computers 90 connected to each other via a network. The computer 90 is a concept that includes not only a single computer 90 but also a virtualized computer system.

[0095] The control unit is realized by the processor 901 reading out various programs stored in the auxiliary storage device 903, expanding the programs in the main storage device 902, and executing processes according to the programs. The control unit can realize functional units that perform various information processing depending on the type of program. In this way, the computer is realized as an information processing device that performs information processing.

[0096] The storage unit is realized by a main storage device 902 and an auxiliary storage device 903. The storage unit stores data, various programs, and various databases. Furthermore, the processor 901 can secure a storage area corresponding to the storage unit in the main storage device 902 or the auxiliary storage device 903 in accordance with a program. Furthermore, the control unit can cause the processor 901 to execute processes of adding, updating, and deleting data stored in the storage unit in accordance with the various programs.

[0097] The term database refers to a relational database, which is used to manage sets of data called masters and tables in a tabular format structurally defined by rows and columns, by associating them with each other. In a database, a table is called a table or master, a column in a table is called a column, and a row in a table is called a record. In a relational database, relationships between tables and masters can be set and associated. Usually, a column that serves as a primary key for uniquely identifying a record is set in each table and each master, but setting a primary key in a column is not essential. The control unit can cause the processor 901 to add, delete, or update records in a specific table or master stored in the storage unit according to various programs. Furthermore, by storing data, various programs, and various databases in the storage unit, it can be considered that the information processing device and information processing system according to the present disclosure have been manufactured.

[0098] In addition, the database and master in this disclosure may include any data structure (such as a list, a dictionary, an associative array, or an object) in which information is structurally defined. The data structure also includes data that can be considered as a data structure by combining data with a function, class, method, or the like written in any programming language.

[0099] The communication unit is realized by the communication IF 991. The communication unit realizes a function of communicating with other computers 90 via a network. The communication unit can receive information transmitted from other computers 90 and input the information to the control unit. The control unit can cause the processor 901 to execute information processing on the received information in accordance with various programs. In addition, the communication unit can transmit information output from the control unit to other computers 90.

[0100] <Additional Notes> The matters described in the above embodiments will be supplemented below.

[0101] (Appendix 1) A wireless power supply system including a plurality of transmitters, a plurality of receivers, and a control device capable of controlling the plurality of transmitters, wherein the plurality of transmitters (100) are capable of wirelessly supplying power to the plurality of receivers (200), and the control device (C10) is capable of controlling the plurality of transmitters not to transmit radio waves over a second period for each first period, and the control device (C10) performs carrier sense control in a space in which the plurality of transmitters and the plurality of receivers are arranged during the second period. In a wireless power supply system including multiple transmitters and multiple receivers, carrier sense control can be appropriately performed, thereby suppressing the influence of radio waves transmitted from each transmitter / receiver on other wireless devices.

[0102] (Appendix 2) 2. The wireless power supply system according to claim 1, wherein the control device (C10) is controllable via a wired connection with the multiple transmitters. This makes it possible to control radio wave transmission from the transmitter / receiver without being affected by other wireless devices.

[0103] (Appendix 3) 2. The wireless power supply system according to claim 1, wherein the control device (C10) is controllable via wireless connection with the plurality of transmitters. This makes it possible to control radio wave transmission from a transmitter / receiver even when the transmitter / receiver is located in a position where a wired connection is difficult.

[0104] (Appendix 4) 4. The wireless power supply system according to claim 1, wherein the control device (C10) dynamically controls at least one of the first period and the second period based on a result of carrier sense control. This makes it possible to flexibly control radio wave transmission from the transmitter / receiver depending on the result of carrier sense control.

[0105] (Appendix 5) A wireless power supply system according to any one of appendices 1 to 4, wherein the control device (C10) executes carrier sense control to determine whether or not another wireless device is transmitting radio waves in a frequency band that may interfere with the frequency band of the radio waves output by the transmitter. This makes it possible to provide a wireless power supply system capable of determining whether or not another wireless device is present in a space.

[0106] (Appendix 6) A wireless power supply system according to any one of appendices 1 to 5, wherein when the control device (C10) detects the presence of another wireless device operating in the space through carrier sense control, it executes a radio wave stopping step (S106, S302) of controlling the multiple transmitters not to transmit radio waves at least during the period when the wireless device is operating. This makes it possible to provide a wireless power supply system that can suppress radio wave interference with other wireless devices present in the same space.

[0107] (Appendix 7) The control device (C10) executes a resume presentation step (S107) of presenting to a specified administrator information indicating that the multiple transmitters will be controlled to transmit radio waves, a resume approval step (S108) of receiving an approval operation from the specified administrator in response to the resume presentation step to approve the control of the multiple transmitters to transmit radio waves, a radio wave resume step (S109) of transmitting radio waves for power supply from the multiple transmitters to the multiple receivers in response to the approval operation received in the resume approval step, a stop presentation step (S104) of presenting to the specified administrator information indicating that the multiple transmitters will be controlled not to transmit radio waves prior to the radio wave suspension step, and a suspension approval step (S105) of receiving an approval operation from the specified administrator in response to the suspension presentation step to approve the control of the multiple transmitters not to transmit radio waves, and the radio wave suspension step (S106) is a step of controlling the multiple transmitters not to transmit radio waves in response to the approval operation received in the suspension approval step. This allows the wireless power supply system administrator to be notified when the transmitter / receiver stops or restarts radio wave transmission, and the transmission can be stopped or restarted depending on the approval of the notification. The wireless power supply system can be controlled according to the instructions of a specified administrator in accordance with laws, regulations, etc.

[0108] (Appendix 8) A wireless power supply system as described in Appendix 1, in which the control device (C10) executes an equipment acquisition step (S103) of acquiring information on other wireless devices in the space, and a radio wave stopping step (S106) of controlling a plurality of transmitters not to transmit radio waves based on the information on the wireless devices acquired by the equipment acquisition step. This makes it possible to provide a wireless power supply system that can suppress radio wave interference with other wireless devices present in the same space.

[0109] (Appendix 9) The wireless power supply system of claim 8, wherein the device acquisition step (S103) is a step of acquiring information on the location, frequency band, and operating period of the wireless device, and the radio wave stopping step (S106) is a step of controlling the multiple transmitters not to transmit radio waves for power supply based on the location, frequency band, and operating period of the wireless device so that the radio waves transmitted by the multiple transmitters do not interfere with the radio waves of the wireless device. This makes it possible to provide a wireless power supply system that can supply power wirelessly while suppressing radio wave interference with other wireless devices present in the same space.

[0110] (Appendix 10) The wireless power supply system according to claim 8 or 9, wherein the control device (C10) executes a device storing step (S101) of storing information about a wireless device, and a device receiving step (S102) of receiving, from a user, an input operation of the information about the wireless device stored in the device storing step, and a device acquiring step (S103) of acquiring the information about the wireless device received in the device receiving step. This makes it possible to provide a wireless power supply system capable of suppressing radio wave interference with other wireless devices present in the space accepted from the user.

[0111] (Appendix 11) The control device (C10) executes a determination step (S109, S303) of determining that the wireless device is not operating after a predetermined period of time has elapsed since the radio wave suspension step, based on information about the wireless device acquired in the device acquisition step, and a radio wave resumption step (S109, S303) of transmitting radio waves for supplying power from a plurality of transmitters to a plurality of receivers if it is determined in the determination step that the wireless device is not operating. As a result, even if the transmitter stops transmitting radio waves to reduce the impact on other wireless devices, the transmitter can resume wireless power supply while reducing radio interference with the other wireless devices.

[0112] (Appendix 12) The control device (C10) executes a reservation acquisition step (S301) of acquiring reservation information regarding the planned use of wireless devices present in a space, and a radio wave stopping step (S302) of controlling a plurality of transmitters not to transmit radio waves so that radio waves for supplying power from the plurality of transmitters to a plurality of receivers do not interfere with radio waves of the wireless devices, based on the reservation information acquired in the reservation acquisition step. This makes it possible to provide a wireless power supply system that can suppress radio wave interference with other wireless devices present in the same space.

[0113] (Appendix 13) The wireless power supply system according to claim 12, wherein the radio wave stopping step (S302) identifies a frequency band and an operating period of the wireless device according to the planned use of the space contained in the reservation information acquired in the reservation acquisition step, and controls the multiple transmitters not to transmit radio waves so that radio waves for supplying power from the multiple transmitters to the multiple receivers do not interfere with the radio waves of the wireless devices. This makes it possible to provide a wireless power supply system that can suppress radio wave interference with other wireless devices present in the same space.

[0114] (Appendix 14) A system including a first wireless power feeding system according to any one of Supplementary Notes 1 to 3 and a second wireless power feeding system according to any one of Supplementary Notes 1 to 3, wherein a plurality of first transmitters included in the first wireless power feeding system and a plurality of second transmitters included in the second wireless power feeding system are controllable so that the first transmitters and the second transmitters do not transmit radio waves over a third period. As a result, even when a plurality of different wireless power supply systems exist in a space, it is possible to suppress the influence of radio waves transmitted from each transceiver on other wireless devices.

[0115] (Appendix 15) 14. A transmitter capable of performing carrier sense control in the wireless power supply system according to any one of claims 1 to 13. In a wireless power supply system including a plurality of transmitters and a plurality of receivers, it is possible to suppress the influence of radio waves transmitted from each of the transmitters and receivers on other wireless devices. [Explanation of symbols]

[0116] 1 WPT system, 300 first information processing device, 3001 memory unit, 3004 control unit, 3006 input device, 3008 output device, 400 second information processing device, 4001 memory unit, 4004 control unit, 4006 input device, 4008 output device, C10 control device, C101 memory unit, C104 control unit, C106 input device, C108 output device, 100 transmitter, 200 receiver

Claims

[Claim 1] In a wireless power supply system comprising multiple transmitters, multiple receivers, and a control device capable of controlling the multiple transmitters, The plurality of transmitters are capable of wirelessly supplying power to the plurality of receivers. The control device can control the plurality of transmitters so that they do not transmit radio waves during the second period, for each first period. The control device performs carrier sense control in the space where the plurality of transmitters and the plurality of receivers are arranged during the second period. Wireless power supply system.

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