System, measuring instrument, method, and program

Abstract

This system comprises one or more transmitters, one or more receivers, a plurality of measuring instruments, and an information processing device. The transmitters are installed in a space to be measured and transmit power supply signals. The receivers generate power by the power supply signals. The measuring instruments measure the electric field intensities at positions where the measuring instruments are arranged. The information processing device prestores space information of the space to be measured and generates an electric field intensity distribution in the space to be measured on the basis of the space information and the electric field intensities measured by the plurality of measuring instruments.

Description

System, measuring instrument, method, and program

[0001] The present disclosure relates to a system, a measuring device, a method, and a program.

[0002] In recent years, wireless power transfer (WPT) has been used in various fields. Compared to wired power transfer, WPT can avoid problems such as wiring strain, breakage, and maintenance.

[0003] Patent document 1 describes an electric field strength sensor that is installed in an indoor space and detects the level of electromagnetic waves from a wireless power supply device received at the installation location, and also states that multiple electric field strength sensors may be installed.

[0004] JP 2010-246319 A

[0005] In Patent Document 1, a system abnormality is diagnosed based on a detected value of the level of electromagnetic waves emitted from a wireless power supply device and a set value of the level of the electromagnetic waves. However, Patent Document 1 does not diagnose the strength of radio waves in an indoor space.

[0006] An object of the present disclosure is to provide a technology that makes it possible to grasp the strength of radio waves in an indoor space.

[0007] The system includes one or more transmitters, one or more receivers, multiple measuring devices, and an information processing device. The transmitter is installed in a space to be measured and transmits a power feed signal. The receiver generates power from the power feed signal. The measuring device measures the electric field strength at the position where it is installed. The information processing device stores spatial information of the space to be measured in advance, and generates an electric field strength distribution within the space to be measured based on the spatial information and the electric field strength measured by the multiple measuring devices.

[0008] According to the present disclosure, it is possible to grasp the level of electromagnetic waves in an indoor space.

[0009] 1 is a diagram showing the overall configuration of a WPT system 1 according to the present embodiment. FIG. 1 is a block diagram showing an example configuration of a transmitter 100 and a receiver 200 shown in FIG. 1. FIG. 2 is a block diagram showing an example configuration of a measuring device 500 shown in FIG. 1. FIG. 3 is a diagram showing an example functional configuration of a first information processing device 300. FIG. 4 is an example diagram showing the structure of the measuring device 500 shown in FIG. 3. FIG. 5 is an example perspective view showing the structure of a PCB 530 shown in FIG. 5. FIG. 6 is a perspective view of the measuring device 500 shown in FIG. 5 placed on a plane. FIG. 7 is a schematic diagram showing an example data structure of a spatial information table 3021 stored in the first information processing device 300. FIG. 8 is a schematic diagram showing an example data structure of a measurement result table 3022 stored in the first information processing device 300. FIG. 9 is a flowchart showing an example operation of the measuring device 500. FIG. 10 is a diagram showing an example arrangement of the transmitter 100 and the measuring device 500 in space. FIG. 11 is a schematic diagram showing an example distribution map generated by a generation module 3034. FIG. 12 is a diagram showing an example arrangement of the transmitter 100 and the measuring device 500 in space. 14 is a schematic diagram showing an example of a distribution map when transmitters 100 are arranged as shown in FIG. 13. FIG. 15 is a block diagram showing the basic hardware configuration of a computer 90. FIG.

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In all drawings describing the embodiments, common components are designated by the same reference numerals, and repeated explanations will be omitted. Note that the following embodiments do not unduly limit the content of the present disclosure described in the claims. Furthermore, not all components shown in the embodiments are necessarily essential components of the present disclosure. Furthermore, each drawing is a schematic diagram and is not necessarily a precise illustration.

[0011] <Overview> A WPT (Wireless Power Transfer) system includes one or more transmitters that transmit power feed signals and multiple receivers that receive the power feed signals. One or more measuring devices measure the electric field strength based on the power feed signals transmitted by the transmitters. An information processing device calculates the electric field strength distribution in a measurement target space (indoor space) based on the electric field strength measured by the measuring devices.

[0012] <1 Overall System Configuration> FIG. 1 is a diagram showing the overall configuration of a WPT system 1 according to this embodiment.

[0013] 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 measuring device 500. The WPT system 1 shown in Fig. 1 is used, for example, in a building, a factory, or the like. A building is an example of a structure, and the WPT system is not limited to a building as long as it is an indoor space where predetermined activities such as business and office work are carried out. The connection between the transmitter 100 and the first information processing device 300, and the connection between the first information processing device 300 and the second information processing device 400 may be wired or wireless.

[0014] 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.

[0015] 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.

[0016] In this specification, the transmitter 100 is a (power) transmitter 100 in the sense of wirelessly transmitting power, and similarly, the receiver 200 is a (power) receiver 200 in the sense of wirelessly receiving power. As will be described later, the receiver 200 may transmit, for example, information about the state of the receiver 200 or information about measurement results by a sensor to the transmitter 100 as a data signal, and the transmitter 100 may receive such a data signal. In this case, the transmitter 100 is a receiver that receives the data signal, and the receiver 200 functions as a transmitter that transmits the data signal.

[0017] 1 shows an example in which the WPT system 1 includes two measuring devices 500, but the number of measuring devices 500 included in the WPT system 1 is not limited to two. The WPT system 1 may include three or more measuring devices 500. The measuring devices 500 may be installed, for example, at positions corresponding to the positions of the transmitters 100. For example, the measuring devices 500 are installed at approximately equal distances from each transmitter 100. Furthermore, the measuring devices 500 may be installed, for example, at positions corresponding to the positions of the receivers 200. For example, the measuring devices 500 are installed near the receivers 200.

[0018] 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.

[0019] The transmitter 100 transmits, for example, a power supply signal or a data 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.

[0020] The transmitter 100 may, for example, supply power to one receiver 200, or may supply power to multiple receivers 200. The transmitter 100 may, for example, transmit a data signal to one receiver 200, or may transmit a data signal to multiple receivers 200. The transmitter 100 may, for example, transmit the same data signal as another transmitter 100, or may transmit a data signal different from that of the other transmitters 100. The transmitter 100 may, for example, transmit a predetermined command signal as a data signal to the receiver 200, or may transmit a preset signal as a data signal to the receiver 200.

[0021] 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.

[0022] The receiver 200 receives, for example, a power supply signal or a data signal transmitted from the transmitter 100. If the receiver 200 has, for example, a power storage unit, it converts the power supply signal transmitted from the transmitter 100 into power and stores the converted power in the power storage unit. If the receiver 200 has, for example, a predetermined sensor, it converts the power supply signal transmitted from the transmitter 100 into power and drives the sensor with the converted power. The receiver 200 may drive the sensor with the power stored in the power storage unit.

[0023] The receiver 200 transmits, for example, information about the state of the receiver 200 or information about the measurement results of the sensor to the transmitter 100 as a data signal.

[0024] The measuring device 500 measures, for example, the strength of the electric field (electric field strength) generated by the power supply signal transmitted from the transmitter 100. The measuring device 500 measures, for example, the strength along three axes in a Cartesian coordinate system of the electric field generated by radio waves in the 920 MHz band transmitted from the transmitter 100. The measuring device 500 performs, for example, predetermined statistical processing on the measured electric field strength. The measuring device 500 transmits the processed information to the first information processing device 300, for example, by radio waves in the 2.4 GHz band.

[0025] The measuring device 500 may calculate the power that can be generated by the received power supply signal. For example, the measuring device 500 calculates the intensity of the power that can be generated by radio waves in the 920 MHz band transmitted from the transmitter 100 along three axes in a Cartesian coordinate system. For example, the measuring device 500 performs predetermined statistical processing on the calculated power. The measuring device 500 transmits the processed information to the first information processing device 300, for example, by radio waves in the 2.4 GHz band.

[0026] The first information processing device 300 is an information processing device that monitors the operations 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.

[0027] Furthermore, 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, which is transmitted from the transmitter 100, in a storage unit provided in the first information processing device 300.

[0028] Furthermore, the first information processing device 300 controls the operation of the transmitter 100 housed in the WPT system 1. For example, the first information processing device 300 transmits predetermined instructions or information to the transmitter 100.

[0029] The first information processing device 300 also controls the operation of the second information processing device 400 .

[0030] The first information processing device 300 also monitors the radio wave environment of the space in which the WPT system 1 is installed. The first information processing device 300, for example, stores information transmitted from the measuring device 500 in a storage unit provided in the first information processing device 300. The first information processing device 300 calculates the distribution of electric field strength in the space, for example, based on the stored information and information related to the placement of the transmitter 100. The distribution of electric field strength may be a three-dimensional distribution or a two-dimensional distribution. The first information processing device 300, for example, calculates an appropriate placement of the transmitter 100 based on the calculated electric field strength distribution.

[0031] 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 notifies the user that the transmitter 100, the receiver 200, or both of them are in the predetermined state.

[0032] Furthermore, the second information processing device 400 analyzes information about 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 about the location of the transmitter 100 Information about the location of the receiver 200 Information about power consumption Information about power intensity

[0033] Furthermore, the second information processing device 400 analyzes the information measured by the measuring device 500 and stored in the first information processing device 300, and presents predetermined information to the user. The predetermined information is, for example, the following: Electric field strength distribution within the space Changes over time in the electric field strength distribution within the space Changes in the electric field strength distribution based on changes in the situation within the space (e.g., changes in the placement of the transmitter 100 or parameters) Changes in the electric field strength distribution based on changes in the layout within the space (e.g., changes in the placement of desks, shelves, etc.) Optimal placement of the transmitter 100 (for example, when not calculated by the first information processing device 300)

[0034] 1.1 Configuration of Transmitter and Receiver FIG. 2 is a block diagram illustrating an example configuration of the transmitter 100 and receiver 200 shown in FIG. 1 . As shown in FIG. 2 , the transmitter 100 and the receiver 200 are, for example, spaced apart by a predetermined distance. For example, the transmitter 100 and the receiver 200 are installed at a distance of approximately several meters. Specifically, for example, the transmitter 100 is fixedly installed at a high location indoors, such as a predetermined high position on a ceiling or wall. Depending on how the transmitter 100 is installed, its position can be changed after installation. 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. Depending on how the receiver 200 is installed, its position can be changed after installation. The transmitter 100 transmits a power supply signal to the receiver 200 using radio waves at a predetermined frequency, for example, the 920 MHz band. The receiver 200 converts the power supply signal transmitted from the transmitter 100 into electric power, and uses the converted electric power to charge or supply the converted electric power to a predetermined device.

[0035] 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, the data transmitting / receiving antenna 105, or a combination of at least any of these may be mounted on, for example, a PCB (printed circuit board).

[0036] The oscillator 101 oscillates a signal in a predetermined frequency band, for example, the 920 MHz band. The oscillated signal may be amplified and unwanted frequency components removed, if necessary.

[0037] The transmitting antenna 102 is configured to be able to efficiently transmit radio waves in the 920 MHz band, for example, and emits a signal oscillated by the oscillator 101 as a power supply signal.

[0038] The microcomputer 103 controls the operation of the transmitter 100. The microcomputer 103 is realized by, for example, a semiconductor device equipped with an ARM processor. The microcomputer 103 controls, for example, the transmission of radio waves by the transmission antenna 102.

[0039] The data transceiver 104 performs processes such as converting digital data to analog and modulating analog data. 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.

[0040] The data transmission / reception antenna 105 is configured to be able to efficiently transmit and receive radio waves in the 2.4 GHz band, for example. The data transmission / reception antenna 105 radiates data signals supplied from the data transceiver 104. The data transmission / reception antenna 105 also receives data signals transmitted from the receiver 200.

[0041] The receiver 200 includes, for example, a receiving antenna 201, a rectifier 202, a power management unit 203, a power storage unit 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 power storage unit 204, the microcomputer 205, the data transceiver 206, the data transmitting / receiving antenna 207, or a combination of at least any of these may be mounted on, for example, a PCB or an FPC (flexible printed circuit board).

[0042] The receiving antenna 201 is configured 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.

[0043] The rectifier 202 rectifies the radio waves received as the power supply signal and converts them into a DC voltage.

[0044] 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 power storage unit 204 by controlling the charging voltage. Furthermore, for example, when the power storage unit 204 stores power equal to or greater than a predetermined capacity, the power management unit 203 supplies the DC voltage to a connected component.

[0045] Furthermore, the power management unit 203 discharges the power stored in the power storage unit 204 in response to control from the microcomputer 205 .

[0046] The power storage unit 204 stores power in response to an instruction from the power management unit 203. The power storage unit 204 is realized by, for example, a battery or a capacitor. The power storage unit 204 also discharges the stored power in response to an instruction from the power management unit 203.

[0047] 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 power storage unit 204. The microcomputer 205 controls the power management unit 203 to cause the power storage unit 204 to release the power stored therein.

[0048] 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, etc. are connected to the receiver 200. The sensors connected to the receiver 200 are driven, for example, by a DC voltage supplied from the power management unit 203 or by power discharged from the power storage unit 204. The microcomputer 205 continuously or intermittently monitors the voltage values ​​at predetermined locations of the receiver 200, the status of the sensors connected to the receiver 200, information detected by the sensors, etc. The microcomputer 205 transmits the voltage values ​​at predetermined locations of the receiver 200, the status of the sensors connected to the receiver 200, information detected by the sensors, etc. as digital data to the data transceiver 206. Note that the sensors may be built into the receiver 200.

[0049] 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 transmission / reception 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 power storage unit 204.

[0050] The data transmission / reception antenna 207 is configured to be able to efficiently transmit and receive radio waves in the 2.4 GHz band, for example. The data transmission / reception antenna 207 radiates data signals supplied from the data transceiver 206. The data transmission / reception antenna 207 also receives data signals 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 power discharged from the power storage unit 204.

[0051] 1.2 Measuring Device Configuration FIG. 3 is a block diagram showing an example configuration of measuring device 500 shown in FIG. 1. Measuring device 500 shown in FIG. 3 is placed, for example, in a space to be measured. Measuring devices 500 are placed, for example, at regular intervals in the space. Measuring devices 500 may be placed, for example, only at positions where measurements are required. Measuring devices 500 may be placed, for example, in positions corresponding to transmitter 100 or receiver 200. Measuring device 500 may be placed on an object such as a desk, chair, or shelf, or may be hung by a string. Measuring devices 500 may be placed at multiple heights rather than at a fixed height.

[0052] The measuring device 500 includes, for example, a measuring antenna 501, a field strength measuring unit 502, a power storage unit 503, a microcomputer 504, a data transceiver 505, and a data transmitting / receiving antenna 506. The measuring antenna 501, the field strength measuring unit 502, the power storage unit 503, the microcomputer 504, the data transceiver 505, the data transmitting / receiving antenna 506, or a combination of at least any of these may be mounted on, for example, a PCB or an FPC (flexible printed circuit board).

[0053] The measurement antenna 501 is configured to be able to efficiently receive radio waves in the 920 MHz band, for example. The measurement antenna 501 is configured, for example, along three axes in a Cartesian coordinate system. That is, the measurement antenna 501 has an antenna element formed along the x-axis, an antenna element formed along the y-axis, and an antenna element formed along the z-axis. Each antenna element is realized, for example, by a dipole antenna. However, a monopole antenna may also be used. Each antenna element has a length, for example, equal to or less than half the wavelength of radio waves in the 920 MHz band (for example, approximately 40 mm). The measurement antenna 501 receives the power supply signal radiated from the transmitting antenna 102.

[0054] The field strength measurement unit 502 measures the field strength based on the strength of the signal received by the measurement antenna 501. Specifically, the field strength measurement unit 502 measures the field strength based on the strength of the signal received for each antenna element of the measurement antenna 501, for example. The field strength measurement unit 502 measures the field strength at a predetermined cycle, for example. The predetermined cycle is, for example, multiple times per second (approximately 1000 times). The field strength measurement unit 502 outputs the measurement result to the microcomputer 504. The measurement result may be accompanied by a timestamp indicating the time the measurement was performed.

[0055] Power storage unit 503 stores, for example, power supplied from an external source. Power storage unit 503 is realized by, for example, a battery or a capacitor. Power storage unit 503 may also store power generated by a power supply signal transmitted from transmitter 100. When measuring device 500 is connected to receiver 200, measuring device 500 may use power storage unit 204 of receiver 200. When measuring device 500 is built into receiver 200, measuring device 500 may use power storage unit 204 of receiver 200.

[0056] The microcomputer 504 controls the operation of the measuring device 500. The microcomputer 504 also performs statistical processing based on the measurement results measured by the field strength measuring unit 502. Statistical processing includes, for example, calculating an average value over a predetermined period and calculating a peak value over a predetermined period. However, statistical processing is not limited to these, and various other types of processing are possible. The predetermined period corresponds to, for example, the period at which the measuring device 500 transmits information about the measurement results. The predetermined period may be the same as or shorter than the period at which the measuring device 500 transmits information about the measurement results. The microcomputer 504 outputs, as information about the measurement results, information after statistical processing or information measured by the field strength measuring unit 502 to the data transceiver 505. For example, the microcomputer 504 outputs information about the measurement results together with the date and time at which the measurement was performed.

[0057] The microcomputer 504 may calculate the power generated when the device itself is the receiver 200 based on the measurement results obtained by the field strength measurement unit 502. Specifically, for example, the microcomputer 504 stores information related to the efficiency of a rectifier. For example, the efficiency of the rectifier varies depending on the strength of the received power supply signal and the magnitude of the connected load (the magnitude of the load of the application executed by the generated power). The microcomputer 504 calculates the power based on the information related to the rectifier efficiency and the measurement results obtained by the field strength measurement unit 502. The microcomputer 504 performs statistical processing on data related to the calculated power. The microcomputer 504 outputs the data after the statistical processing to the data transceiver 505. The microcomputer 504 may calculate the power based on the data after the statistical processing.

[0058] A power switch may be connected to the microcomputer 504. Pressing the power switch inputs whether or not to operate the measuring device 500. When the user turns the power switch on, the microcomputer 504 operates. When the user turns the power switch off, the microcomputer 504 stops.

[0059] The data transceiver 505 performs processes such as converting digital data output from the microcomputer 504 to analog data and modulating the analog data. The data transceiver 505 also performs processes such as demodulating a data signal received by a data transmission / reception antenna 506 and digitizing the demodulated data.

[0060] The data transmission / reception antenna 506 is configured to be able to efficiently transmit and receive radio waves in the 2.4 GHz band, for example. The data transmission / reception antenna 506 radiates the data signal output from the data transceiver 505. The data transmission / reception antenna 506 also receives the data signal transmitted from the first information processing device 300.

[0061] 4 is a diagram showing an example of the functional configuration of the first information processing device 300. As shown in FIG. 4, the first information processing device 300 functions as a communication unit 301, a storage unit 302, and a control unit 303.

[0062] The communication unit 301 performs processing for the first information processing device 300 to communicate with other devices, for example, the transmitter 100 , the receiver 200 , and the measuring device 500 .

[0063] The storage unit 302 has, for example, a spatial information table 3021, a measurement result table 3022, etc. The tables stored in the storage unit 302 are not limited to these. In addition to these, the storage unit 302 also stores, for example, tables that store information about the states of the transmitter 100 and the receiver 200.

[0064] The space information table 3021 is a table that stores information about the space to be measured, and will be described in detail later.

[0065] The measurement result table 3022 is a table that stores information related to the measurement results, which will be described in detail later.

[0066] The control unit 303 is realized by the processor reading a program stored in the storage unit and executing instructions included in the program. By operating in accordance with the program, the control unit 303 performs functions shown as a reception control module 3031, a transmission control module 3032, a storage module 3033, a generation module 3034, and a proposal module 3035.

[0067] The reception control module 3031 controls the process in which the first information processing device 300 receives signals from other devices, such as the transmitter 100, the second information processing device 400, and the measuring device 500, in accordance with a communication protocol.

[0068] The transmission control module 3032 controls the process in which the first information processing device 300 transmits signals to other devices, such as the transmitter 100, the second information processing device 400, and the measuring device 500, in accordance with a communication protocol.

[0069] The storage module 3033 stores information acquired from the transmitter 100 and the measuring device 500 in the storage unit 302. Specifically, for example, information related to measurement results is transmitted from the measuring device 500 at a predetermined interval. The storage module 3033 acquires information output from the measuring device 500 and stores the acquired information in the measurement result table 3022.

[0070] The generation module 3034 generates a distribution map of the space to be measured based on the information related to the measurement. Specifically, for example, the generation module 3034 references the measurement result table 3022 and generates a distribution map of the electric field strength in the space. The generation module 3034 may generate a two-dimensional distribution map or a three-dimensional distribution map. If the power has been calculated by the measuring device 500, the generation module 3034 may generate a power distribution map.

[0071] The proposal module 3035 calculates an optimal placement of the transmitters 100 for the space based on a distribution map within the space. The proposal module 3035 may calculate the optimal placement of the transmitters 100 by taking into account not only changes in the positions of the transmitters 100 but also, for example, an increase or decrease in the number of transmitters 100. The proposal module 3035 may also calculate the optimal placement of the transmitters 100 by changing not only the placement of the transmitters 100 but also parameters such as the direction in which the transmitters 100 are placed and the strength of the radio waves emitted. The proposal module 3035, for example, estimates the relationship between the electric field and the transmitters 100 based on the calculated distribution map, and adjusts the number, positions, and parameters of the transmitters 100 so that the electric field strength in the space is at a recommended level.

[0072] <2 Structure of Meter> Figure 5 is an example diagram showing the structure of the meter 500 shown in Figure 3. Figure 5(a) shows an example of a perspective view of the meter 500. Figure 5(b) shows a side view of the meter 500. In the meter 500 shown in Figure 5, for example, a PCB 530 on which a circuit related to the meter 500 is formed is stored in a housing 510. The meter 500 has a length in the longitudinal direction of approximately 10 cm and lengths in the lateral and depth directions of approximately 5 cm. In the example shown in Figure 5, a portion of the side of the housing 510 is hollow, but the side of the housing 510 is not limited to being hollow.

[0073] The housing 510 is made of, for example, a resin such as polyvinyl chloride. The housing 510 has, for example, a first member 511 and a second member 512. The first member 511 and the second member 512 are arch-shaped. The first member 511 and the second member 512 contact each other and are fixed to each other at the arch-shaped piers, thereby forming the housing 510. The arch-shaped first member 511 and the second member 512 are fixed to each other at the piers, thereby forming a space inside the housing 510.

[0074] Convex portions 5115 and 5116 are formed on the inside of the pier of the first member 511. Convex portions 5125 and 5126 are formed on the inside of the pier of the second member 512. When the first member 511 and the second member 512 are fixed together, the distance between the convex portions 5115 and 5125 corresponds to the thickness of the PCB 530. The distance between the convex portions 5116 and 5126 corresponds to the thickness of the PCB 530. The PCB 530 is held within the housing 510 by being sandwiched between the convex portions 5115 and 5125 and the convex portions 5116 and 5126.

[0075] A measurement antenna 501 and other circuit areas 540 are formed along the longitudinal direction of the PCB 530. For example, a field intensity measurement unit 502, a power storage unit 503, a microcomputer 504, a data transceiver 505, and a data transmission / reception antenna 506 are mounted in the circuit area 540. The circuit areas 540 are formed on both sides of the PCB 530, for example.

[0076] One end of housing 510, in the direction in which circuit region 540 is formed, is shaped so that it can be placed on a flat surface. For example, in FIG. 5 , one end of housing 510, in the direction in which circuit region 540 is formed, is shaped flat to form mounting portion 520. For accurate measurements by measuring instrument 500, mounting portion 520 is desirably formed along a plane formed by the axis of measurement antenna 501.

[0077] The first member 511 has holes 5112 and 5113 formed along the longitudinal direction. The holes 5112 and 5113 are also formed at the same positions on the back side of the surface shown in FIG. 5 . The holes 5112 and 5113 may also be formed in the second member 512, or may be formed in both the first member 511 and the second member 512. The holes 5112 and 5113 are mechanisms for installing the measuring device 500 in a hollow space, for example, at a height similar to that of a desk or the like, or at a predetermined height. For example, the measuring device 500 can be fixed in a hollow space by passing a linear object, such as a thread, string, or wire, between desks or the like, through the holes 5112 and 5113. For accurate measurements by the measuring device 500, it is desirable that the holes 5112 and 5113 be formed along the axial direction of the measurement antenna 501.

[0078] The first member 511 has a hole 5114 formed at one end thereof in the direction in which the circuit region 540 is formed. The second member 512 has a hole 5124 formed at one end thereof in the direction in which the circuit region 540 is formed. When the first member 511 and the second member 512 are fixed together, the holes 5114 and 5124 are formed along the short side. The holes 5114 and 5124 are also formed in the same positions on the back side of the surface shown in FIG. 5 . The holes 5114 and 5124 may be formed at the end on the side where the measurement antenna 501 is formed, or may be formed at both ends. The holes 5114 and 5124 are mechanisms for installing the measuring device 500 in a hollow space. For example, the measuring device 500 can be fixed in a hollow space by passing a linear object such as a thread, string, or wire through the holes 5114 and 5124. For accurate measurements by the measuring device 500 , it is desirable that the holes 5114 and 5124 be formed along the axial direction of the measuring antenna 501 .

[0079] Holes 5112, 5113, 5114, and 5124 may be any installation mechanism that allows a linear object to be passed through and allows measurement device 500 to be installed in the air, and do not have to be holes. The installation mechanism may be, for example, a hook.

[0080] The switch 507 is attached at a position where the user can press it from the side of the housing 510 .

[0081] Fig. 6 is an example of a perspective view showing the structure of the PCB 530 shown in Fig. 5. In Fig. 6, the measurement antenna 501 has antenna elements 5011, 5012, and 5013 formed along three axes in a Cartesian coordinate system. The longitudinal direction of the PCB 530 is formed along the direction in which the antenna element 5011 is formed. The lateral direction of the PCB 530 is formed along the direction in which the antenna element 5012 is formed. The electric field strength measuring unit 502 may be mounted, for example, near the area in which the antenna elements 5011, 5012, and 5013 are formed. This enables more accurate measurement of the electric field strength.

[0082] Fig. 7 is a perspective view of measuring device 500 shown in Fig. 5 placed on a flat surface. In Fig. 7, measuring device 500 is placed on the flat surface using mounting portion 520. Mounting portion 520 is provided at the end of housing 510 in the direction in which circuit region 540 is formed. Therefore, when measuring device 500 is placed with mounting portion 520 in contact with the flat surface, measurement antenna 501 is placed at a position away from the flat surface. Therefore, measuring device 500 can prevent a decrease in the reception efficiency of measurement antenna 501.

[0083] 8 and 9 are diagrams showing the data structures of tables stored in the first information processing device 300. Note that FIGS. 8 and 9 are merely examples and do not exclude data that is not listed. Furthermore, data listed in the same table may be stored in separate storage areas in the storage unit 302.

[0084] Fig. 8 is a schematic diagram showing an example of the data structure of the spatial information table 3021 stored in the first information processing device 300. The spatial information table 3021 shown in Fig. 8 is a table having columns of space ID, setting date and time, spatial information, transmitter, receiver, and measuring device, with the setting ID as a key, for example.

[0085] The setting ID is an item for storing identification information of a setting. The space ID is an item for storing identification information of a space. The setting date and time is an item for storing the date and time when information about a space was set. The space information is an item for storing registered information about a space. The space information includes, for example, the vertical distance of the room, the horizontal distance of the room, the height of the room, information about the materials that form the space, information about objects placed in the space, information about loss of radio wave intensity in the space, or at least any combination of these. The information about the materials that form the space includes, for example, floor materials, ceiling materials, wall materials, window glass materials, or at least any combination of these. The information about objects placed in the space includes, for example, the positions of objects such as desks and chairs, the types of objects, the materials of the objects, or at least any combination of these. The space information may be stored in advance or may be set by the user. The space information is not limited to these. For example, any of the above information may be omitted, or information other than the above information may be included.

[0086] The transmitter is an item that stores information about the transmitter 100. The item "transmitter" includes coordinates where the transmitter 100 is located, transmission gain, transmission intensity, or at least any combination of these. The receiver is an item that stores information about the receiver 200. The item "receiver" includes coordinates where the receiver 200 is located, reception gain, rectification efficiency, or at least any combination of these. The measuring device is an item that stores information about the measuring device 500. The item "measuring device" includes coordinates where the measuring device 500 is located, etc.

[0087] Fig. 9 is a schematic diagram showing an example of the data structure of a measurement result table 3022 stored in the first information processing device 300. The measurement result table 3022 shown in Fig. 9 is a table having columns for measurement date and time, field strength, and estimated power, with a setting ID as a key, for example.

[0088] The measurement date and time is an item that stores the date and time when the measurement was performed. The field strength is an item that stores the measured field strength. The field strength item may store information that has been subjected to statistical processing, or may store information before the statistical processing is performed. The estimated power is an item that stores calculated power. The estimated power item may store information that has been subjected to statistical processing, or may store information before the statistical processing is performed. Note that if power is not calculated, the estimated power item may not be present.

[0089] 10 is a flowchart showing an example of the operation of measuring device 500. In the explanation of Fig. 10, a case will be described in which transmitter 100 and measuring device 500 are arranged, for example, as shown in Fig. 11.

[0090] 11 is a diagram showing an example of the spatial arrangement of transmitter 100 and measuring device 500. Transmitter 100 and measuring device 500 are placed in a room, for example, 10 m in the x direction and 10 m in the y direction. Transmitters 100 are placed, for example, at intervals of 3 m. Measuring device 500 is placed, for example, so that its position in the y direction is aligned with that of transmitter 100 and its position in the x direction is located between transmitters 100.

[0091] In step S11, measuring device 500 measures the electric field strength at a predetermined cycle. Specifically, measuring antenna 501 receives radio waves in the 920 MHz band transmitted from transmitter 100 using antenna elements 5011, 5012, and 5013 arranged along three axes in a Cartesian coordinate system. Field strength measuring unit 502 measures the electric field strength for each axis based on the strength of the radio waves received by antenna elements 5011, 5012, and 5013, for example, at a cycle of multiple times per second.

[0092] In step S12, the measuring device 500 performs statistical processing on the measured field strength. Specifically, the microcomputer 504 calculates the field strength for one second based on the field strength measured during that one second. More specifically, the microcomputer 504 calculates the field strength for that one second by averaging the field strengths measured during that one second. Furthermore, the microcomputer 504 determines the peak value of the field strength measured during that one second as the field strength for that one second. The period for statistical processing is not limited to one second and may be longer than one second.

[0093] In step S13, the measuring device 500 transmits the processed information to the first information processing device 300. Specifically, the microcomputer 504 transmits the statistically processed information to the first information processing device 300 at a predetermined cycle. The predetermined cycle may coincide with the period for the statistical processing or may be longer than the period. The microcomputer 504 may transmit the average value and peak value of the electric field strength to the first information processing device 300. The microcomputer 504 may transmit the difference between the average value and peak value of the electric field strength to the first information processing device 300. The microcomputer 504 may transmit measurement results that have not been subjected to statistical processing to the first information processing device 300.

[0094] When the first information processing device 300 receives information related to the measurement from the measuring device 500, it stores the received information in the measurement result table 3022. For example, when the second information processing device 400 requests specific information, the first information processing device 300 executes processing in accordance with the request. For example, when the second information processing device 400 requests the electric field strength distribution in space, the generation module 3034 generates a distribution map of the space to be measured based on the information related to the measurement stored in the measurement result table 3022.

[0095] Fig. 12 is a schematic diagram showing an example of a distribution map generated by generation module 3034. In Fig. 12, the space is divided into a predetermined grid, and the color of the grid indicates the electric field strength. The division of the grid is set, for example, based on the arrangement of measuring devices 500. The grid may be set by arranging measuring devices 500, or measuring devices 500 may be arranged to match the grid.

[0096] Also, for example, when the second information processing device 400 requests the change in the electric field strength distribution over time, the generation module 3034 generates a distribution diagram of the electric field strength at multiple points in time based on the information about the measurement stored in the measurement result table 3022.

[0097] Furthermore, for example, when a change in the field strength distribution based on a change in the situation in the space or a change in the layout is requested by the second information processing device 400, the generation module 3034 references the space information table 3021 and acquires the date and time when the settings related to the space were updated. The generation module 3034 acquires information about measurements before and after the update based on the measurement result table 3022, and generates a field strength distribution map based on the acquired information.

[0098] Also, for example, when the second information processing device 400 requests a proposal for improving the distribution of electric field strength, the proposal module 3035 calculates the placement of the transmitter 100 appropriate for the space based on a distribution map within the space.

[0099] Fig. 13 is a diagram showing an example of the spatial arrangement of transmitter 100 and measuring device 500. Unlike the example shown in Fig. 11, in Fig. 13, transmitter 100 is not placed at (x, y) = (6, 3).

[0100] Fig. 14 is a schematic diagram showing an example of a distribution map when transmitters 100 are placed as shown in Fig. 13. In Fig. 14, grids 31 and 32 have lower electric field strength compared to other grids. The proposal module 3035 estimates the association between the electric field and the transmitter 100, and adjusts the number, position, and parameters of the transmitter 100 so that the electric field strength in space is at a recommended level. The proposal module 3035 proposes placing the transmitter 100 between grid 31 and grid 32 in Fig. 14, i.e., at (x, y) = (6, 3).

[0101] As described above, in the above embodiment, the WPT system 1 includes one or more transmitters 100, one or more receivers 200, multiple measuring devices 500, and a first information processing device 300. The transmitter 100 is installed in a space to be measured and transmits a power supply signal. The receiver 200 generates power using the power supply signal. The measuring device 500 measures the electric field strength at the location where it is installed. The first information processing device 300 stores spatial information of the space to be measured in advance, and generates an electric field strength distribution within the space to be measured based on the spatial information and the electric field strength measured by the measuring device 500. This enables the first information processing device 300 to acquire the electric field strength within the space in real time.

[0102] Therefore, the WPT system 1 according to this embodiment makes it possible to grasp the strength of radio waves in an indoor space.

[0103] In the above embodiment, the measuring devices 500 are arranged at regular intervals within the measurement target space, which allows the first information processing device 300 to obtain the electric field intensity within the space without bias.

[0104] In the above embodiment, measuring device 500 is placed at a position corresponding to the placement of transmitter 100. This allows first information processing device 300 to monitor the strength of the signal transmitted from transmitter 100 with high accuracy.

[0105] In the above embodiment, the measuring device 500 sets the rectification efficiency of the receiver 200 based on predetermined conditions, and calculates the power generated by the receiver 200 based on the measured electric field strength. This allows the first information processing device 300 to obtain the power in the space in real time.

[0106] In the above embodiment, the first information processing device 300 generates at least two electric field strength distributions measured at different times, thereby enabling the first information processing device 300 to acquire the change in the strength of radio waves over time in space.

[0107] In the above embodiment, the first information processing device 300 generates at least two electric field intensity distributions in situations where the spatial information is different, thereby enabling the first information processing device 300 to acquire the intensity of radio waves in spaces with different settings in the same space.

[0108] In the above embodiment, the measuring device 500 can measure the electric field strength in three axes. The first information processing device 300 generates an electric field strength distribution based on the electric field strength measured in three axes. This makes it possible to take into account the polarization plane of the power feed signal when considering the placement of the transmitter 100.

[0109] In the above embodiment, the first information processing device 300 calculates the optimal placement of the transmitter 100 based on the generated field strength distribution, thereby enabling the first information processing device 300 to efficiently improve the radio wave environment in space.

[0110] In the above embodiment, the measuring device 500 includes a measuring antenna 501, a measuring means (field strength measuring unit 502), a generating means (microcomputer 504), and a transmitting means (data transmitting / receiving antenna 506). The measuring antenna 501 receives radio waves transmitted from one or more transmitters that wirelessly supply power. The field strength measuring unit 502 measures the field strength multiple times per second based on the received radio waves. The microcomputer 504 generates information based on the measured field strength. The data transmitting / receiving antenna 506 transmits the generated information. In the WPT system 1 according to this embodiment, multiple transmitters 100 transmit power supply signals asynchronously and without directionality. The power supply signals transmitted from the transmitters 100 are reflected by multiple paths, causing overlapping and cancellation of waves. As a result, the radio wave strength fluctuates significantly over time. In this embodiment, the field strength measuring unit 502 measures the field strength 1,000 times per second, and the microcomputer 504 generates information based on the measured field strength. This makes it possible to measure the field strength with high accuracy in an environment in which a plurality of transmitters 100 transmit power supply signals asynchronously and without directionality.

[0111] In the above embodiment, the microcomputer 504 generates information by performing statistical processing on the measured field strength, which enables the field strength measurement unit 502 to suppress fluctuations over time and acquire the field strength in a steady state.

[0112] Furthermore, the measuring device 500 may transmit not only the information after statistical processing but also the measurement results, which allows the results of measurements taken multiple times per second to be used in a predetermined analysis.

[0113] In the above embodiment, microcomputer 504 sets the rectification efficiency of receiver 200, which receives radio waves transmitted from transmitter 100 and generates power, based on predetermined conditions, and thereby calculates the power generated by receiver 200 based on the received radio waves. This enables measuring instrument 500 to estimate the power in a space in real time.

[0114] Furthermore, in the above embodiment, the measurement antenna 501 is arranged along three axes in a Cartesian coordinate system. Due to the structure of the receiving antenna 201, the receiver 200 may be affected by the plane of polarization. The measurement antenna 501 is capable of receiving radio waves in the x, y, and z axes, and the field strength measurement unit 502 is capable of measuring the strength of radio waves in the x, y, and z axes. Therefore, it is possible to generate a field strength distribution based on the field strength measured in three axes, and the user can consider the optimal placement of the receiver 200 by referring to the field strength distribution.

[0115] Furthermore, in the above embodiment, measuring instrument 500 has housing 510 that houses measurement antenna 501 and circuit area 540. Housing 510 has mounting portion 520 at one end. Measurement antenna 501 is stored near the end opposite to the end where mounting portion 520 is formed. This positions measurement antenna 501 away from the mounting surface, making it possible for measuring instrument 500 to prevent a decrease in the reception efficiency of measurement antenna 501.

[0116] <Modification> In the above embodiment, the first information processing device 300 generates the electric field strength distribution or the power distribution. However, the measuring device 500 may generate the electric field strength distribution or the power distribution. In this case, for example, at least one of the multiple measuring devices 500 collects measurement-related information from the other measuring devices 500. The measuring device 500 that has collected the information generates the electric field strength distribution or the power distribution based on the collected information.

[0117] In the above embodiment, an example has been described in which the measurement antenna 501 has the antenna elements 5011, 5012, and 5013 formed along three axes in a Cartesian coordinate system. However, the antenna elements of the measurement antenna 501 may be antenna elements arranged along one axis in the Cartesian coordinate system, or may be antenna elements arranged along two axes in the Cartesian coordinate system.

[0118] Furthermore, in the above-described embodiments, the present invention has been described as being applied to a so-called WPT system 1 in which transmission power consisting of an AC signal is wirelessly transmitted from the transmitter 100 to the receiver 200. However, the present invention can also be applied to systems that provide power to the receiver 200 by other methods. Since such systems are known, detailed description thereof will be omitted. Examples include a system that transmits power generated by solar power generation to the receiver 200 via a wired or wireless connection, and a system that transmits power to the receiver 200 via a laser beam via a wired or wireless connection. The present invention can also be applied to a configuration in which vibration or sound is applied to the receiver 200, and the receiver 200 converts the power of the vibration or the like into electric power. Furthermore, the present invention can also be applied to systems that use known contactless power supply technologies other than those that wirelessly receive transmission power consisting of an AC signal, such as a contactless power supply technology using a magnetic field coupling system.

[0119] 15 is a block diagram showing the basic hardware configuration of a computer 90. The computer 90 includes at least a processor 91, a main storage device 92, an auxiliary storage device 93, and a communication IF (interface) 99. These components are electrically connected to one another by a bus.

[0120] The processor 91 is hardware for executing an instruction set written in a program, and is composed of an arithmetic unit, registers, peripheral circuits, and the like.

[0121] The main storage device 92 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).

[0122] The auxiliary storage device 93 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.

[0123] The communication IF 99 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 using wireless base stations, etc. For example, the network includes 3G, 4G, and 5G mobile communication systems, LTE (Long Term Evolution), and wireless networks (e.g., Wi-Fi (registered trademark)) that can connect to the Internet via a predetermined access point. In the case of a wireless connection, communication protocols include, for example, Z-Wave (registered trademark), ZigBee (registered trademark), and Bluetooth (registered trademark). In the case of a wired connection, the network also includes a network that is directly connected using a USB (Universal Serial Bus) cable, etc.

[0124] It should be noted that the computer 90 can be virtually realized by distributing all or part of each hardware configuration across multiple computers 90 and interconnecting them via a network. In this way, the concept of the computer 90 includes not only a computer 90 housed in a single housing or case, but also a virtualized computer system.

[0125] <Basic Functional Configuration of Computer 90> A description will be given of the functional configuration of the computer realized by the basic hardware configuration of the computer 90 shown in Fig. 20. The computer includes at least the functional units of a control unit, a storage unit, and a communication unit.

[0126] The functional units of the computer 90 can also be realized by distributing all or part of the functional units among multiple computers 90 interconnected via a network. The computer 90 is a concept that includes not only a single computer 90 but also a virtualized computer system.

[0127] The control unit is realized by the processor 91 reading various programs stored in the auxiliary storage device 93, expanding them in the main storage device 92, and executing processing in accordance with the programs. The control unit can realize functional units that perform various types of information processing depending on the type of program. In this way, the computer is realized as an information processing device that performs information processing.

[0128] The storage unit is realized by a main storage device 92 and an auxiliary storage device 93. The storage unit stores data, various programs, and various databases. Furthermore, the processor 91 can allocate a storage area corresponding to the storage unit in the main storage device 92 or the auxiliary storage device 93 in accordance with the programs. Furthermore, the control unit can cause the processor 91 to execute processes for adding, updating, and deleting data stored in the storage unit in accordance with the various programs.

[0129] The term "database" refers to a relational database, which manages data sets called tables in a tabular format structurally defined by rows and columns, by associating them with one another. In a database, a table is called a table, a column in a table, and a row in a table a record. In a relational database, relationships between tables can be set and associated. Typically, each table has a column set as a key to uniquely identify a record, but setting a key to a column is not required. The control unit can cause the processor 91 to add, delete, or update records in specific tables stored in the storage unit according to various programs.

[0130] The communication unit is realized by the communication IF 99. The communication unit realizes the 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 91 to execute information processing on the received information in accordance with various programs. Furthermore, the communication unit can transmit information output from the control unit to other computers 90.

[0131] Although several embodiments of the present disclosure have been described above, these embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and modifications are intended to be included in the scope of the inventions and their equivalents as defined in the claims, as well as in the scope and spirit of the inventions.

[0132] In the above description, a "processor" refers to one or more processors. The at least one processor is typically a microprocessor such as a CPU (Central Processing Unit), but may also be another type of processor such as a GPU (Graphics Processing Unit). The at least one processor may be a single-core or multi-core processor.

[0133] Furthermore, the at least one processor may be a processor in the broad sense, such as a hardware circuit (for example, a field-programmable gate array (FPGA) or an application-specific integrated circuit (ASIC)) that performs part or all of the processing.

[0134] Furthermore, in the above explanation, expressions such as "xxx table" are sometimes used to describe information that produces an output for an input, but this information can be data of any structure, or a learning model such as a neural network that produces an output for an input. Therefore, a "xxx table" can also be called "xxx information."

[0135] Furthermore, in the above explanation, the configuration of each table is an example, and one table may be divided into two or more tables, or all or part of two or more tables may be one table.

[0136] Furthermore, in the above explanation, the processing may be described using the "program" as the subject, but since the program is executed by a processor to perform the specified processing while appropriately using a memory unit and / or an interface unit, the subject of the processing may also be the processor (or a device such as a controller that has that processor, or a microcomputer).

[0137] The program may be installed in a device such as a computer, or may be stored in, for example, a program distribution server or a computer-readable (e.g., non-transitory) recording medium. In the following description, two or more programs may be realized as one program, or one program may be realized as two or more programs.

[0138] Furthermore, in the above description, identification numbers are used as identification information for various objects, but other types of identification information (for example, identifiers including alphabetic characters or symbols) may also be used.

[0139] In addition, in the above explanation, when describing elements of the same type without distinguishing between them, reference signs (or common signs among the reference signs) may be used, and when describing elements of the same type with distinction between them, the identification numbers (or reference signs) of the elements may be used.

[0140] In the above description, the control lines and information lines are those that are considered necessary for the description, and do not necessarily represent all control lines and information lines in the product. All components may be interconnected.

[0141] <Supplementary Notes> The matters described in the above embodiments are supplemented below. (Supplementary Note 1) A system including one or more transmitters installed in a measurement target space and transmitting a power supply signal, one or more receivers generating power in response to the power supply signal, multiple measuring devices measuring field strength at the locations where the transmitters are installed, and an information processing device that stores spatial information about the measurement target space in advance and generates an electric field strength distribution within the measurement target space based on the spatial information and the electric field strength measured by the multiple measuring devices. (Supplementary Note 2) The system described in (Supplementary Note 1), in which the measuring devices are arranged at regular intervals within the measurement target space. (Supplementary Note 3) The system described in (Supplementary Note 1), in which the measuring devices are arranged at positions corresponding to the locations of the transmitters. (Supplementary Note 4) The system described in any one of (Supplementary Note 1) to (Supplementary Note 3), in which the measuring devices calculate the power generated by the receiver based on the measured electric field strength by setting the rectification efficiency of the receiver based on predetermined conditions. (Supplementary Note 5) The system described in any one of (Supplementary Note 1) to (Supplementary Note 4), in which the measuring device calculates the power generated by the receiver based on the measured electric field strength. (Supplementary Note 5) The system described in any one of (Supplementary Note 1) to (Supplementary Note 4), in which the measuring device sets the rectification efficiency of the receiver based on predetermined conditions, thereby calculating the power generated by the receiver based on the measured electric field strength. (Supplementary Note 6) The system described in any one of (Supplementary Note 1) to (Supplementary Note 5), in which the information processing device generates at least two electric field strength distributions in situations where spatial information is different. (Supplementary Note 7) The system described in any one of (Supplementary Note 1) to (Supplementary Note 6), in which the measuring device is capable of measuring electric field strength in three axes, and the information processing device generates an electric field strength distribution based on the electric field strength measured in three axes. (Supplementary Note 8) The system described in any one of (Supplementary Note 1) to (Supplementary Note 7), in which the information processing device calculates an optimal placement of transmitters based on the generated electric field strength distribution. (Supplementary Note 9) The measuring device includes an antenna that receives radio waves transmitted from one or more transmitters that supply power wirelessly, means for measuring the electric field strength multiple times per second based on the received radio waves, means for generating information based on the measured electric field strength, and means for transmitting the generated information. (Supplementary Note 10) The measuring device described in (Supplementary Note 9), in which the generating means generates the information by performing statistical processing on the measured electric field strength.(Supplementary Note 11) The measuring instrument according to (Supplementary Note 9) or (Supplementary Note 10), wherein the generating means calculates the power generated by the receiver based on the received radio waves by setting the rectification efficiency of the receiver, which receives radio waves transmitted from the transmitter and generates power, based on predetermined conditions. (Supplementary Note 12) The measuring instrument according to any of (Supplementary Note 9) to (Supplementary Note 11), wherein the antenna is arranged along two axes in a Cartesian coordinate system. (Supplementary Note 13) The measuring instrument according to any of (Supplementary Note 9) to (Supplementary Note 11), wherein the antenna is arranged along three axes in a Cartesian coordinate system. (Supplementary Note 14) The measuring instrument according to any of (Supplementary Note 9) to (Supplementary Note 13), wherein the measuring instrument has a case that houses the antenna, generating means, and transmitting means, and has a mounting portion at one end, and the antenna is housed near the end opposite the end. (Supplementary Note 15) A method executed by a measuring device having an antenna that receives radio waves transmitted from one or more transmitters that supply power wirelessly, the method comprising the steps of measuring field strength multiple times per second based on the received radio waves, generating information based on the measured field strength, and transmitting the generated information. (Supplementary Note 16) A program to be executed by a measuring device having an antenna that receives radio waves transmitted from one or more transmitters that supply power wirelessly, the program causing the measuring device to execute the steps of measuring field strength multiple times per second based on the received radio waves, generating information based on the measured field strength, and transmitting the generated information.

[0142] 1...WPT system 100...Transmitter 101...Oscillator 102...Transmitting antenna 103...Microcomputer 104...Data transceiver 105...Data transmitting and receiving antenna 200...Receiver 201...Receiving antenna 202...Rectifier 203...Power management unit 204...Power storage unit 205...Microcomputer 206...Data transceiver 207...Data transmitting and receiving antenna 300...First information processing device 400...Second information processing device 500...Measuring device

Claims

1. A system comprising: one or more transmitters installed in a space to be measured that transmit a power supply signal; one or more receivers that generate power in response to the power supply signal; multiple measuring devices that measure electric field strength at the locations where the receivers are placed; and an information processing device that pre-stores spatial information about the space to be measured and generates an electric field strength distribution within the space to be measured based on the spatial information and the electric field strength measured by the multiple measuring devices.

2. The system of claim 1, wherein said measuring devices are positioned at regular intervals within said volume to be measured.

3. The system according to claim 1, wherein said measuring device is disposed at a position corresponding to the position of said transmitter.

4. A system according to any one of claims 1 to 3, wherein the measuring instrument calculates the power generated by the receiver based on the measured electric field strength by setting the rectification efficiency of the receiver based on predetermined conditions.

5. The system according to any one of claims 1 to 4, wherein the information processing device generates at least two electric field intensity distributions having different measurement times.

6. The system according to any one of claims 1 to 5, wherein the information processing device generates at least two electric field intensity distributions in situations where the spatial information is different.

7. The system according to any one of claims 1 to 6, wherein the measuring device is capable of measuring the electric field strength in three axes, and the information processing device generates an electric field strength distribution based on the electric field strength measured in the three axes.

8. A system according to any one of claims 1 to 7, wherein the information processing device calculates an optimal arrangement of the transmitters based on the generated electric field intensity distribution.

9. A measuring device comprising: an antenna for receiving radio waves transmitted from one or more transmitters that supply power wirelessly; means for measuring electric field strength multiple times per second based on the received radio waves; means for generating information based on the measured electric field strength; and means for transmitting the generated information.

10. The measuring device according to claim 9, wherein said generating means generates said information by performing statistical processing on the measured electric field intensity.

11. A measuring instrument as described in claim 9 or 10, wherein the generating means calculates the power generated by the receiver based on the received radio waves by setting the rectification efficiency of the receiver, which receives radio waves transmitted from the transmitter and generates power, based on predetermined conditions.

12. A measuring instrument as claimed in any one of claims 9 to 11, wherein the antennas are arranged along two axes in a Cartesian coordinate system.

13. A measuring instrument as claimed in any one of claims 9 to 11, wherein the antennas are arranged along three axes in a Cartesian coordinate system.

14. A measuring instrument as claimed in any one of claims 9 to 13, comprising a case housing the antenna, the generating means and the transmitting means and having a mounting portion at one end, the antenna being housed in the vicinity of the end opposite to the end.

15. A method performed by a measuring device having an antenna that receives radio waves transmitted from one or more transmitters that supply power wirelessly, comprising the steps of: measuring electric field strength based on the received radio waves multiple times per second; generating information based on the measured electric field strength; and transmitting the generated information.

16. A program to be executed by a measuring device having an antenna that receives radio waves transmitted from one or more transmitters that supply power wirelessly, the program causing the measuring device to execute the steps of: measuring electric field strength based on the received radio waves multiple times per second; generating information based on the measured electric field strength; and transmitting the generated information.

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