JP2017181181A - Electromagnetic field visualization device and electromagnetic field visualization method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simultaneously visualize the leakage electromagnetic fields of the wireless power transmission system in a plurality of frequency bands and to grasp the influence of the electromagnetic interference of the leakage electromagnetic field for each frequency band.SOLUTION: An electromagnetic visualization device 1 is configured to include: an input part 12 for inputting leakage electromagnetic field data in which coordinates on map data of a location desired to visualize a leakage electromagnetic field is paired with electromagnetic strength on the coordinates for each prescribed frequency band; a processor 13 for determining the coordinates which exceed the predetermined threshold value in electromagnetic field strength from the leakage electromagnetic field data for each frequency band, and superpose color information corresponding to the frequency band on the coordinates determined for each frequency band in the map data, thereby forming an electromagnetic interference area display image being a prescribed size area including the coordinates on the map data colored for each frequency band; and a display part 14 for displaying the electromagnetic interference area display image.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to an electromagnetic field visualization device and an electromagnetic field visualization method for visualizing a leakage electromagnetic field of a wireless power transmission system.

  In recent years, a medium power (several hundred watts) wireless power transmission system (hereinafter referred to as “WPT system” as appropriate) that supplies power for charging or feeding to portable information terminals and home appliances by wireless power transmission has become widespread. In addition, a high-power (several kW) WPT system that supplies electric power for charging electric vehicles is also being developed for practical use in the future. Can greatly improve the convenience of power supply and charging. In addition to the convenience of power supply and charging, such a WPT system can improve the weather resistance such as the degree of freedom of arrangement and waterproofness, in addition to the convenience of power supply and charging. In addition, this can be expected to create a new market for home appliances that do not require power wiring, such as wall-mounted TVs and cookable home appliances that can be washed.

  However, since the WPT system transmits electric power using a magnetic field or electric field radiated into the space, a leakage electromagnetic field is generated in a space close to the system. Therefore, if the frequency of the leakage electromagnetic field of this system or a higher-order frequency that is an integral multiple of this frequency overlaps the operating frequency of various electronic and electrical devices used in the vicinity of this system, There is a risk of electromagnetic interference such as performance degradation or malfunction.

  Therefore, a technique for visualizing the leakage electromagnetic field has been proposed for the purpose of grasping the influence of electromagnetic interference of the leakage electromagnetic field from an electronic device or the like (see Patent Document 1). In the prior art described in Patent Document 1, an electromagnetic field vector is calculated based on an electromagnetic field intensity measured by an electromagnetic field sensor, and an image showing the electromagnetic field vector three-dimensionally is displayed on a display device.

JP 2012-44001 A

  When a plurality of WPT systems exist close to each other, leakage electromagnetic fields are generated in various frequency bands. Further, as described above, the leakage electromagnetic field causes not only the fundamental frequency but also a higher-order frequency that is an integral multiple of the fundamental frequency to cause electromagnetic interference. Therefore, it is desirable that the influence of the electromagnetic interference of the leakage electromagnetic field can be simultaneously grasped not only in one frequency band but also in a plurality of frequency bands in a wide frequency range of several tens of kHz to several GHz. In addition, since the allowable limit of the magnetic field strength of the leakage electromagnetic field is different for each frequency band, it is desirable that the influence of electromagnetic interference of the leakage electromagnetic field can be grasped for each frequency band.

  However, in the prior art described in Patent Document 1, a leakage electromagnetic field can be visualized in one frequency band, but cannot be visualized simultaneously in a plurality of frequency bands. Moreover, in the prior art described in Patent Document 1, it has not been possible to grasp the influence of electromagnetic interference of leakage electromagnetic fields for each frequency band.

  The present disclosure has been devised in view of the above-described problems of the prior art, and visualizes the leakage electromagnetic field of the wireless power transmission system in a plurality of frequency bands at the same time, and considers the influence of electromagnetic interference of the leakage electromagnetic field. An object of the present invention is to provide an electromagnetic field visualization device and an electromagnetic field visualization method that can be grasped for each frequency band.

  An electromagnetic field visualization device according to the present disclosure is an electromagnetic field visualization device that visualizes a leakage electromagnetic field of a wireless power transmission system, on map data of a place where the leakage electromagnetic field is desired to be visualized for each predetermined frequency band. An input unit for inputting leakage electromagnetic field data in which a coordinate and a magnetic field strength at the coordinate are paired, and obtaining a coordinate at which the magnetic field strength exceeds a predetermined threshold value from the leakage electromagnetic field data for each frequency band Electromagnetic color obtained by superimposing color information corresponding to a frequency band on the coordinates obtained for each frequency band in the map data, and coloring a region of a predetermined size including the coordinates on the map data for each frequency band A processor that generates an interference area display image and a display unit that displays the electromagnetic interference area display image are provided.

  According to the present disclosure, the leakage electromagnetic field of the wireless power transmission system can be visualized simultaneously in a plurality of frequency bands, and the influence of electromagnetic interference of the leakage electromagnetic field can be grasped for each frequency band.

The block diagram which shows schematic structure of the electromagnetic field visualization apparatus which concerns on this embodiment The figure which shows an example of the threshold value of the allowable limit of the magnetic field strength of a leakage electromagnetic field Flow chart showing the flow of processing by the electromagnetic field visualization apparatus according to the present embodiment The figure which shows an example of an electromagnetic interference area | region display image

  A first invention made to solve the above-mentioned problem is an electromagnetic field visualization device for visualizing a leakage electromagnetic field of a wireless power transmission system, wherein the leakage electromagnetic field is desired to be visualized for each predetermined frequency band. An input unit for inputting leakage electromagnetic field data in which coordinates on the map data of the place and magnetic field intensity at the coordinates are input, and the magnetic field strength is predetermined from the leakage electromagnetic field data for each frequency band A coordinate exceeding a threshold is obtained, color information corresponding to the frequency band is superimposed on the coordinate obtained for each frequency band in the map data, and an area of a predetermined size including the coordinates on the map data is added to the frequency A processor for generating an electromagnetic interference area display image colored for each band, and a display unit for displaying the electromagnetic interference area display image To.

  According to the electromagnetic field visualization apparatus according to the first aspect of the present invention, a region of a predetermined size including coordinates where the magnetic field strength exceeds a predetermined threshold on the map data can be colored and displayed for each frequency band. it can. As a result, it is possible to simultaneously visualize the leakage electromagnetic field of the wireless power transmission system in a plurality of frequency bands and grasp the influence of electromagnetic interference of the leakage electromagnetic field for each frequency band.

  In a second aspect based on the first aspect, when the coordinates obtained for each of the frequency bands overlap with each other in the plurality of frequency bands, the processor adds the coordinates to the overlapping coordinates. Color information corresponding to a plurality of frequency bands is superimposed.

  According to the electromagnetic field visualization apparatus according to the second aspect of the present invention, even when areas of a predetermined size including coordinates on which the magnetic field strength exceeds a predetermined threshold on the map data overlap each other in a plurality of frequency bands, The overlapping parts can be displayed in an easy-to-understand manner.

  The third invention is characterized in that, in the first invention or the second invention, the color information is determined based on a positional relationship of colors in a hue circle.

  According to the electromagnetic field visualization apparatus according to the third aspect of the invention, the user can intuitively recognize the frequency band or a combination of a plurality of frequency bands based on the color positional relationship in the hue circle.

  According to a fourth invention, in any one of the first to third inventions, the map data is three-dimensional map data including a three-dimensional coordinate axis system representing a three-dimensional space, and the processor includes: In a predetermined plane defined by two predetermined coordinate axis systems in the three-dimensional coordinate axis system, color information corresponding to the frequency band is superimposed on the coordinates obtained for each frequency band.

  According to the electromagnetic field visualization apparatus according to the fourth aspect of the present invention, when three-dimensional map data is used as map data, the magnetic field is determined for each predetermined plane defined by two predetermined coordinate axis systems in the three-dimensional coordinate axis system. It is possible to display a region of a predetermined size including coordinates whose intensity exceeds a predetermined threshold.

  Further, a fifth invention is the above-described first invention to the third invention, wherein the map data is three-dimensional map data including a three-dimensional coordinate axis system representing a three-dimensional space, and the processor includes: In the three-dimensional coordinate axis system, color information corresponding to the frequency band is superimposed on the coordinates obtained for each frequency band, and a spherical region of a predetermined size including the coordinates for each three-dimensional coordinate of the three-dimensional coordinate axis system The electromagnetic interference area display image colored with a color is generated.

  According to the electromagnetic field visualization apparatus according to the fifth aspect of the present invention, when using three-dimensional map data as map data, a region of a predetermined size including coordinates in which the magnetic field strength exceeds a predetermined threshold in a three-dimensional space. Can be displayed in an easy-to-understand manner.

  According to a sixth aspect of the present invention, there is provided an electromagnetic field visualization method for visualizing a leakage electromagnetic field of a wireless power transmission system, wherein the coordinates on the map data of a place where the leakage electromagnetic field is desired to be visualized for each predetermined frequency band. And an input step for inputting leakage electromagnetic field data in which the magnetic field strength at the coordinates is paired, and obtaining coordinates where the magnetic field strength exceeds a predetermined threshold from the leakage electromagnetic field data for each frequency band, An electromagnetic interference region in which color information corresponding to the frequency band is superimposed on the coordinates obtained for each frequency band in map data, and an area of a predetermined size including the coordinates on the map data is colored for each frequency band An image generation step for generating a display image and a display step for displaying the electromagnetic interference region display image are provided.

  According to the electromagnetic field visualization method according to the sixth aspect of the present invention, it is possible to display a region of a predetermined size including coordinates where the magnetic field strength exceeds a predetermined threshold on the map data by coloring each frequency band. it can. As a result, it is possible to simultaneously visualize the leakage electromagnetic field of the wireless power transmission system in a plurality of frequency bands and grasp the influence of electromagnetic interference of the leakage electromagnetic field for each frequency band.

  In a seventh aspect based on the sixth aspect, in the image generation step, when the coordinates obtained for each frequency band overlap each other in a plurality of frequency bands, the coordinates overlap each other. The color information corresponding to the plurality of frequency bands is superimposed.

  According to the electromagnetic field visualization method according to the seventh aspect of the present invention, even when regions of a predetermined size including coordinates where the magnetic field strength exceeds a predetermined threshold on the map data overlap each other in a plurality of frequency bands, The overlapping parts can be displayed in an easy-to-understand manner.

  The eighth invention is characterized in that, in the sixth invention or the seventh invention, the color information is determined based on a positional relationship of colors in a hue circle.

  According to the electromagnetic field visualization method according to the eighth aspect of the invention, the user can intuitively recognize the frequency band or a combination of a plurality of frequency bands based on the color positional relationship in the hue circle.

  According to a ninth invention, in any of the sixth to eighth inventions, the map data is three-dimensional map data including a three-dimensional coordinate axis system representing a three-dimensional space, and the image generating step Then, on a predetermined plane defined by two predetermined coordinate axis systems in the three-dimensional coordinate axis system, color information corresponding to the frequency band is superimposed on the coordinates obtained for each frequency band.

  According to the electromagnetic field visualization method according to the ninth aspect of the present invention, when three-dimensional map data is used as map data, the magnetic field is determined for each predetermined plane defined by two predetermined coordinate axes in the three-dimensional coordinate axis system. It is possible to display a region of a predetermined size including coordinates whose intensity exceeds a predetermined threshold.

  According to a tenth aspect of the present invention, in any one of the sixth to eighth aspects, the map data is three-dimensional map data including a three-dimensional coordinate axis system representing a three-dimensional space, and the image generating step Then, in the three-dimensional coordinate axis system, color information corresponding to the frequency band is superimposed on the coordinates obtained for each frequency band, and a predetermined size including the coordinates for each three-dimensional coordinate of the three-dimensional coordinate axis system. The electromagnetic interference area display image in which a spherical area is colored is generated.

  According to the electromagnetic field visualization method according to the tenth aspect of the present invention, when three-dimensional map data is used as the map data, a region of a predetermined size including coordinates in which the magnetic field strength exceeds a predetermined threshold in the three-dimensional space. Can be displayed in an easy-to-understand manner.

  Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.

  FIG. 1 is a block diagram illustrating a schematic configuration of an electromagnetic field visualization apparatus 1 according to the present embodiment. As shown in FIG. 1, the electromagnetic field visualization device 1 includes a storage unit 11, an input unit 12, a processor 13, a display unit 14, and a bus 15 that connects them.

  The storage unit 11 is a storage device (storage) such as a ROM or a hard disk, for example, map data of a place where the leakage electromagnetic field is desired to be visualized, and the allowable magnetic field strength of the leakage electromagnetic field predetermined for each predetermined frequency band. Limit threshold values (hereinafter referred to as “magnetic field strength threshold values”) and color information associated in advance for each predetermined frequency band are stored. Further, the storage unit 11 stores various programs and various data for realizing each function of the electromagnetic field visualization device 1.

  In the present embodiment, the map data is two-dimensional map data including a two-dimensional coordinate axis system, and includes a plan view of a place where a leakage electromagnetic field is to be visualized and a two-dimensional coordinate in the plan view. In the present embodiment, the place where the leakage electromagnetic field is desired to be visualized is in the building, and the map data includes a plan view showing the internal configuration and the floor plan in the building.

  FIG. 2 is a diagram illustrating an example of the magnetic field strength threshold stored in the storage unit 11. The magnetic field strength threshold shown in FIG. 2 is a target value set by the radio wave environment committee, and in various electronic and electrical devices used in the vicinity of the WPT system when the transmission power of the WPT system is 3 kW. This is a threshold value for the allowable limit of electromagnetic interference. Referring to FIG. 2, for example, in the frequency band of 42 kHz or less, the magnetic field strength threshold is “−5.51” dBμA / m, and in the frequency band of 42 to 48 kHz, the magnetic field strength threshold is “39.8” dBμA. / M. Note that the magnetic field strength threshold shown in FIG. 2 is an example, and the magnetic field strength threshold may be appropriately set according to the transmission power of the WPT system to be visualized.

  The color information is information that defines a color to be colored in a specified area on the map data. For example, the frequency band A is red for the frequency band A and blue for the frequency band B, and is associated with each frequency band in advance. ing. Also, the color information is associated in advance with each predetermined combination of frequency bands, for example, the combination of the frequency band A and the frequency band B is gray.

  Note that the color information may be determined based on the positional relationship of colors in the hue circle. For example, the colors of the frequency band A, the frequency band B, and the frequency band C are equally spaced from each other in the hue ring, such as red for the frequency band A, blue for the frequency band B, and green for the frequency band C. The color (in this example, red, blue and green) may be used. The combination of the frequency band A and the frequency band B is a color (purple) located between the color of the frequency band A (red) and the color of the frequency band B (blue) in the hue ring. And the frequency band C is a color (blue green) located between the color of the frequency band B (blue) and the color of the frequency band C (green) in the hue circle, and the frequency band C and the frequency band A As for the combination, the color (yellow) located between the color of the frequency band C (green) and the color of the frequency band A (red) in the hue ring may be used. In this way, the user can intuitively recognize the frequency band or a combination of a plurality of frequency bands based on the positional relationship of the colors in the hue circle.

  The input unit 12 includes an input device such as a keyboard and a mouse, or other data input devices, and inputs leaked electromagnetic field data measured by a known electromagnetic field measuring device (not shown) to the electromagnetic field visualization device 1. used. The leakage electromagnetic field data is data for each predetermined frequency band, and the coordinates on the map data and the magnetic field strength at the coordinates are paired. The input unit 12 is also used to input various commands to the electromagnetic field visualization apparatus 1 and to input the map data, magnetic field strength threshold value data, and color information data to the storage unit 11. .

  Further, data obtained by electromagnetic field analysis simulation can be used as leakage magnetic field data. In that case, a simulation method suitable for the frequency band may be used for each frequency band. For example, in the low frequency band (9 kHz to 30 MHz), the frequency domain / electromagnetic field analysis simulation method, the medium to high frequency band (30 MHz to 30 MHz) It is preferable to use a transient / electromagnetic field analysis simulation method for 2 GHz) and a geometrical optical propagation analysis simulation method for high frequency bands (3 GHz to 6 GHz).

  The processor 13 is, for example, a CPU, and reads various programs and various data from the storage unit 11 onto a RAM (volatile memory functioning as a work area of the processor) (not shown) based on a predetermined control program, and visualizes the electromagnetic field. Each process of the apparatus 1 is executed. Specifically, the processor 13 generates an electromagnetic interference region display image (see FIG. 4) based on the electromagnetic field data input from the input unit 12.

  The display unit 14 is a general display device such as a display (monitor), and is used for displaying a processing result in the processor 13.

  FIG. 3 is a flowchart showing the flow of processing by the electromagnetic field visualization apparatus 1 according to the present embodiment. With reference to FIG. 3, the flow of processing by the electromagnetic field visualization apparatus 1 according to the present embodiment will be described.

  First, leakage electromagnetic field data of the WPT system to be visualized is input to the input unit 12 for each predetermined frequency band (step ST101). As described above, the leakage electromagnetic field data is data in which the coordinates on the map data and the magnetic field intensity at the coordinates are paired for each frequency band.

  Subsequently, the processor 13 refers to the electromagnetic intensity threshold value (see FIG. 2) stored in the storage unit 11 and calculates the magnetic field strength from the leakage electromagnetic field data input to the input unit 12 for each frequency band. Coordinates exceeding the intensity threshold are obtained (step ST102). Specifically, for each frequency band, a coordinate group in which the magnetic field strength exceeds the electromagnetic strength threshold is obtained. For example, referring to FIG. 2, the magnetic field strength threshold in the 79-90 kHz frequency band is “39.8”. Accordingly, in the 79-90 kHz frequency band, a coordinate group whose magnetic field strength exceeds the magnetic field strength threshold “39.8” is obtained.

  Next, the processor 13 determines whether or not input of leakage electromagnetic field data of all frequency bands to be input is completed from the input unit 12 (step ST103). When it is determined that the process has been completed (step ST103: Yes), the process proceeds to step ST104. When it is determined that the process has not been completed (step ST103: No), the process returns to step ST101. Note that the frequency band to be input may be appropriately selected by the user according to the WPT system to be visualized.

  In step ST104, the processor 13 reads the map data from the storage unit 11, superimposes color information corresponding to the frequency band on the coordinate group obtained for each frequency band in the above-described step ST102 in the map data, and thereby the magnetic field strength. Generates an electromagnetic interference region display image in which a region of a predetermined size including a coordinate group exceeding the electromagnetic intensity threshold is colored for each frequency band. An area of a predetermined size including a coordinate group in which the magnetic field intensity exceeds the electromagnetic intensity threshold is a range in which the leakage electromagnetic field of the WPT system has an influence of electromagnetic interference on electronic and electrical equipment used in the vicinity thereof (hereinafter referred to as “electromagnetic field”). (Referred to as “interference range”). In continuing step ST105, the display part 14 displays the electromagnetic interference area | region display image produced | generated by the processor 13. FIG.

  FIG. 4 is a diagram illustrating an example of an electromagnetic interference region display image that displays an electromagnetic interference range in the indoor 21 of a building that is a place where it is desired to visualize the leakage electromagnetic field of the WPT system. As shown in FIG. 4, the electromagnetic interference range 22 in the frequency band A is displayed in red, and the electromagnetic interference range 23 in the frequency band B of the leakage electromagnetic field is displayed in blue. Further, a portion 24 where the electromagnetic interference range 22 of the frequency band A and the electromagnetic interference range 23 of the frequency band B overlap each other is displayed in gray. As described above, the electromagnetic interference area display image shown in FIG. 4 displays the electromagnetic interference range in different colors for each frequency band. In addition, when the electromagnetic interference ranges of a plurality of frequency bands overlap each other, the overlapping portions can be displayed in an easily understandable manner.

  In the example of FIG. 4, two frequency bands, frequency band A and frequency band B, are displayed, but the number of frequency bands to be displayed can be appropriately changed as desired. For example, three frequency bands of frequency band A, frequency band B, and frequency band C may be displayed. In this case, as described above, the color information corresponding to each frequency band may be determined based on the positional relationship of colors in the hue circle. In this way, the user can intuitively recognize the frequency band or a combination of a plurality of frequency bands based on the positional relationship of the colors in the hue circle.

  As described above, according to the present embodiment, the electromagnetic interference range on the map data can be colored and displayed for each frequency band. As a result, it is possible to simultaneously visualize the leakage electromagnetic field of the wireless power transmission system in a plurality of frequency bands and grasp the influence of electromagnetic interference of the leakage electromagnetic field for each frequency band. In addition, this makes it possible for the user to consider an appropriate arrangement position in consideration of the electromagnetic interference range for each frequency band when arranging electronic / electrical devices in the vicinity of the WPT system.

  In the present embodiment, the map data, the magnetic field intensity threshold value, and the color information are configured to be stored in advance in the storage unit 11, but part or all of these are generated by the processor 13 for generating an electromagnetic interference region display image. It may be configured to input from the input unit 12 at the time of execution. In the present embodiment, the map data is configured to include a plan view showing the internal configuration and floor plan of the indoor 21 of the building. However, the internal configuration and the floor plan are not essential, and the plan data includes only coordinates. May be. The map data may be created by the processor 13 based on the coordinates included in the leakage electromagnetic field data.

  In this embodiment, two-dimensional map data including a two-dimensional coordinate axis system is used as map data. However, map data is not limited to two-dimensional map data, and a three-dimensional coordinate axis system representing a three-dimensional space is used. The three-dimensional map data may be included. In this case, the coordinates on the map data are three-dimensional coordinates. Further, in this case, in a predetermined plane defined by two predetermined coordinate axes in the three-dimensional coordinate system, a color corresponding to the frequency band in a coordinate group in which the magnetic field strength obtained for each frequency band exceeds the electromagnetic strength threshold value Information may be superimposed. For example, any one of an XY plane, an XZ plane, and a YZ plane in a three-dimensional coordinate axis system is designated, and color information corresponding to the frequency band is superimposed on the coordinates of the designated plane. You may do it. As a result, the electromagnetic interference range can be displayed for each predetermined plane defined by two predetermined coordinate axis systems in the three-dimensional coordinate axis system.

  In addition, when using three-dimensional map data as map data, color information corresponding to the frequency band is superimposed on a coordinate group in which the magnetic field strength obtained for each frequency band exceeds the electromagnetic intensity threshold in the three-dimensional coordinate axis system, You may make it produce | generate the electromagnetic interference area | region display image which colored the spherical area | region of the predetermined size containing the coordinate for every three-dimensional coordinate of a three-dimensional coordinate axis system. As a result, the electromagnetic interference range can be displayed in an easy-to-understand manner in the three-dimensional space. Further, if the viewpoint for displaying the three-dimensional space can be changed by a key operation or the like, the electromagnetic interference range in the three-dimensional space can be viewed from various viewpoints. It becomes possible to grasp in more detail.

  As mentioned above, although this indication was explained based on specific embodiments, these embodiments are illustrations to the last, and this indication is not limited by these embodiments. It should be noted that the components of the electromagnetic field visualization device and the electromagnetic field visualization method according to the present disclosure shown in the above embodiment are not necessarily all components, and may be appropriately selected as long as they do not depart from the scope of the present disclosure. Is possible.

  An electromagnetic field visualization device and an electromagnetic field visualization method according to an embodiment of the present disclosure simultaneously visualize a leakage electromagnetic field of a wireless power transmission system in a plurality of frequency bands and grasp an influence of electromagnetic interference of the leakage electromagnetic field for each frequency band. It is useful as an electromagnetic field visualization apparatus and an electromagnetic field visualization method that enable the above.

DESCRIPTION OF SYMBOLS 1 Electromagnetic field visualization apparatus 11 Input part 12 Memory | storage part 13 Processor 14 Display part memory | storage part 15 Bus | bath 21 Indoor of building 22 Frequency band A electromagnetic interference range 23 Frequency band B electromagnetic interference range 24 Frequency band A and frequency band B electromagnetic Interference range

Claims (10)

An electromagnetic field visualization device for visualizing a leakage electromagnetic field of a wireless power transmission system,
For each predetermined frequency band, an input unit to which the leakage electromagnetic field data in which the coordinates on the map data of the place where the leakage electromagnetic field is to be visualized and the magnetic field intensity at the coordinates is paired is input,
For each frequency band, a coordinate whose magnetic field intensity exceeds a predetermined threshold is obtained from the leakage electromagnetic field data, and color information corresponding to the frequency band is superimposed on the coordinate obtained for each frequency band in the map data. A processor that generates an electromagnetic interference region display image in which a region of a predetermined size including the coordinates on the map data is colored for each frequency band;
An electromagnetic field visualization apparatus comprising: a display unit configured to display the electromagnetic interference region display image.   The processor superimposes color information corresponding to the plurality of frequency bands on the overlapping coordinates when the coordinates obtained for each frequency band overlap each other in the plurality of frequency bands. The electromagnetic field visualization apparatus according to claim 1.   The electromagnetic field visualization apparatus according to claim 1, wherein the color information is determined based on a positional relationship of colors in a hue circle. The map data is three-dimensional map data including a three-dimensional coordinate axis system representing a three-dimensional space;
The processor superimposes color information corresponding to a frequency band on the coordinates determined for each frequency band on a predetermined plane defined by two predetermined coordinate axis systems in the three-dimensional coordinate axis system. The electromagnetic field visualization apparatus according to any one of claims 1 to 3. The map data is three-dimensional map data including a three-dimensional coordinate axis system representing a three-dimensional space;
In the three-dimensional coordinate axis system, the processor superimposes color information corresponding to the frequency band on the coordinates obtained for each frequency band, and includes the coordinates for each three-dimensional coordinate of the three-dimensional coordinate axis system. 4. The electromagnetic field visualization device according to claim 1, wherein the electromagnetic interference region display image in which a spherical region having a size is colored is generated. An electromagnetic field visualization method for visualizing a leakage electromagnetic field of a wireless power transmission system,
An input step for inputting leakage electromagnetic field data in which coordinates on map data of a place where the leakage electromagnetic field is desired to be visualized and a magnetic field intensity at the coordinates are paired for each predetermined frequency band;
For each frequency band, a coordinate whose magnetic field intensity exceeds a predetermined threshold is obtained from the leakage electromagnetic field data, and color information corresponding to the frequency band is superimposed on the coordinate obtained for each frequency band in the map data. An image generation step of generating an electromagnetic interference region display image in which a region of a predetermined size including the coordinates on the map data is colored for each frequency band;
An electromagnetic field visualization method comprising: a display step of displaying the electromagnetic interference region display image.   In the image generation step, when the coordinates obtained for each frequency band overlap each other in the plurality of frequency bands, color information corresponding to the plurality of frequency bands is superimposed on the overlapping coordinates. The electromagnetic field visualization method according to claim 6, wherein:   The electromagnetic field visualization method according to claim 6 or 7, wherein the color information is determined based on a positional relationship of colors in a hue circle. The map data is three-dimensional map data including a three-dimensional coordinate axis system representing a three-dimensional space;
In the image generation step, color information corresponding to the frequency band is superimposed on the coordinates obtained for each frequency band on a predetermined plane defined by the predetermined two coordinate axis systems in the three-dimensional coordinate axis system. The electromagnetic field visualization method according to claim 6, wherein the electromagnetic field visualization method is provided. The map data is three-dimensional map data including a three-dimensional coordinate axis system representing a three-dimensional space;
In the image generation step, in the three-dimensional coordinate axis system, color information corresponding to the frequency band is superimposed on the coordinates obtained for each frequency band, and the coordinates are set for each three-dimensional coordinate of the three-dimensional coordinate axis system. The electromagnetic field visualization method according to any one of claims 6 to 8, wherein the electromagnetic interference region display image in which a spherical region having a predetermined size is colored is generated.

Images