CN113408095B - Electromagnetic characteristic analysis method and electronic device - Google Patents
Electromagnetic characteristic analysis method and electronic device Download PDFInfo
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- CN113408095B CN113408095B CN202010181661.4A CN202010181661A CN113408095B CN 113408095 B CN113408095 B CN 113408095B CN 202010181661 A CN202010181661 A CN 202010181661A CN 113408095 B CN113408095 B CN 113408095B
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Abstract
The invention provides an electromagnetic characteristic analysis method and an electronic device. The electromagnetic characteristic analysis method comprises the steps of establishing an electromagnetic evaluation model, providing an electromagnetic reference model and performing a comparison step; the electromagnetic evaluation model building step comprises the steps of building an object unit, building a power transmitting unit and building a simulation unit, and combining the object unit, the power transmitting unit and the simulation unit to form an electromagnetic evaluation model; combining the object units and the power transmitting units by using the electromagnetic reference model; the comparing step compares the radiation pattern data of the electromagnetic evaluation model and the electromagnetic reference model to obtain an electromagnetic gain difference value. Therefore, the electromagnetic characteristic analysis can be performed by constructing an electromagnetic evaluation model through electromagnetic simulation software so as to evaluate the influence of the metal-containing object on the antenna.
Description
Technical Field
The present invention relates to electromagnetic analysis methods and electronic devices, and more particularly to an electromagnetic analysis method and an electronic device for simulating an object with a metal coating.
Background
In recent years, wireless communication devices such as global positioning system, digital television, broadcast radio and the like are often installed on vehicles, and these wireless communication devices are required to receive or transmit wireless signals by means of vehicle antennas for ranging, information exchange and the like.
The vehicle antenna is usually arranged on the vehicle bumper, but the baking varnish containing metal components in the vehicle bumper can influence the characteristics of the vehicle antenna, so that the characteristics are attenuated or false alarm is generated, and the influence of the baking varnish containing metal components on the antenna in the vehicle bumper needs to be estimated in advance. However, in the electromagnetic simulation software commonly used, the setting of the metal dust effect is lacking, so that the corresponding simulation cannot be performed.
In view of this, how to improve the defects of electromagnetic simulation software and effectively evaluate the influence between the metal-containing component-containing object and the antenna to achieve more accurate simulation prediction.
Therefore, it is desirable to provide an electromagnetic property analysis method and an electronic device to solve the above problems.
Disclosure of Invention
An object of the present invention is to provide an electromagnetic characteristic analysis method and an electronic device, which are implemented by constructing objects with different metal dust distributions through electromagnetic simulation software to determine the variation of the electromagnetic characteristic.
An embodiment of the invention provides an electromagnetic characteristic analysis method for analyzing an electromagnetic characteristic of an object and a power emitting element, the electromagnetic characteristic analysis method includes performing an electromagnetic evaluation model building step, providing an electromagnetic reference model, and performing a comparison step. The electromagnetic evaluation model building step comprises building an object unit, building a power transmitting unit and building a simulation unit. The object unit is of any geometric shape and has an object information. The power transmitting unit has an electromagnetic signal. The simulation unit defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dust in the object unit. The object unit, the power emission unit and the simulation unit are combined to form an electromagnetic evaluation model, and a projection point coverage rate of the electromagnetic evaluation model is obtained according to the object information and the sum of areas of the projection points, wherein the projection point coverage rate is a metal coverage rate of metal dust on the object unit. The electromagnetic reference model incorporates an object unit and a power transmitting unit. The comparison step is to obtain one radiation pattern data of the electromagnetic reference model and one radiation pattern data of the electromagnetic evaluation model through electromagnetic signals respectively, and to compare the two radiation pattern data to obtain one electromagnetic gain difference value.
Another embodiment of the invention provides an electronic device including a memory and a processor. The memory stores an electromagnetic property evaluation program, and the processor is coupled to the memory for executing the electromagnetic property evaluation program, wherein the electromagnetic property evaluation program comprises an electromagnetic evaluation model building module, an electromagnetic reference model building module and a comparison module. The electromagnetic evaluation model building module comprises an object unit, a power transmitting unit and a simulation unit, wherein the object unit is of any geometric shape and is provided with object information, and the power transmitting unit is provided with an electromagnetic signal. The simulation unit defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dust in the object unit. The object unit, the power transmitting unit and the simulation unit are combined to obtain an electromagnetic evaluation model, a projection point coverage rate of the electromagnetic evaluation model is obtained according to object information and the sum of areas of projection points, and the projection point coverage rate is a metal coverage rate of metal dust on the object unit. The electromagnetic reference model building module is used for combining the object unit and the power transmitting unit to obtain an electromagnetic reference model. The comparison module respectively obtains radiation pattern data of the electromagnetic reference model and radiation pattern data of the electromagnetic evaluation model by electromagnetic signals, and compares the two radiation pattern data to obtain an electromagnetic gain difference value.
Therefore, the invention simulates the vehicle bumper and the vehicle antenna by constructing electromagnetic evaluation models with different metal dust distribution, and judges the proper metal components of the vehicle bumper and the preferred setting positions between the vehicle bumper and the vehicle antenna by performing electromagnetic characteristic analysis, thereby facilitating the discussion and the research of corresponding countermeasures and minimizing the electromagnetic attenuation degree of the vehicle antenna.
Drawings
The foregoing and other objects, features, advantages and embodiments of the invention will be apparent from the following description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a flowchart showing steps of a method for analyzing electromagnetic properties according to an embodiment of the invention;
FIG. 2A is a schematic diagram of an electromagnetic evaluation model according to embodiment 1 of the present invention;
FIG. 2B is a schematic diagram of an analog unit according to embodiment 1 of the present invention;
FIG. 3A is a schematic diagram of an electromagnetic evaluation model according to embodiment 2 of the present invention;
FIG. 3B is a schematic diagram of a simulation unit according to embodiment 2 of the present invention;
FIG. 4A is a schematic diagram of an electromagnetic evaluation model according to embodiment 3 of the present invention;
FIG. 4B is a schematic diagram of a simulation unit according to embodiment 3 of the present invention;
FIG. 5A is a graph showing the radiation pattern of comparative example 1 of the present invention;
FIG. 5B is a diagram showing the radiation pattern of embodiment 1 of the present invention;
FIG. 5C is a radiation pattern diagram of embodiment 2 of the present invention;
FIG. 5D is a radiation pattern diagram of embodiment 3 of the present invention;
FIG. 6A is a graph showing the azimuthal radiation patterns of comparative example 1, examples 1-3;
FIG. 6B is a graph showing the elevation radiation patterns of comparative example 1, examples 1-3 of the present invention; and
fig. 7 is a schematic diagram of an electronic device according to another embodiment of the invention.
Description of main reference numerals:
100. electromagnetic characteristic analysis method
110. 120, 130 steps
200. 300, 400 electromagnetic assessment model
210. 310, 410, 611 object units
220. 320, 420, 612 power transmitting unit
230. 330, 430, 613 analog units
231. 331, 431 base points
232. 332, 432 beams
233. 333, 433 projection points
500. Electronic device
510. Memory device
520. Processor and method for controlling the same
600. Electromagnetic characteristic evaluation program
610. Electromagnetic evaluation model building module
620. Electromagnetic reference model building module
630. Comparison module
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings. For purposes of clarity, many practical details will be set forth in the following description. However, the reader should appreciate that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are unnecessary. Moreover, for the purpose of simplifying the drawings, some well known and conventional structures and elements are shown in the drawings in a simplified schematic manner; and repeated elements will likely be indicated by identical reference numerals.
Referring to fig. 1, a flowchart illustrating steps of a method 100 for electromagnetic property analysis according to an embodiment of the invention is shown. The electromagnetic property analysis method 100 is for analyzing an electromagnetic property of an object and a power emitting device, and includes steps 110, 120 and 130.
Step 110 is a step of performing an electromagnetic evaluation model, which includes creating an object unit, creating a power transmitting unit, and creating a simulation unit. The object unit is of any geometric shape and has an object information, which may be, but is not limited to, area information or volume information. The power transmitting unit has an electromagnetic signal which is used for simulating the antenna for the vehicle. The simulation unit defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dust in the object unit. And combining the object unit, the power emission unit and the simulation unit to form an electromagnetic evaluation model, wherein the object unit is arranged between the power emission unit and the simulation unit, and a projection point coverage rate of the electromagnetic evaluation model is obtained according to object information and the sum of areas of projection points, and the projection point coverage rate is a metal coverage rate of metal dust on the object unit.
Step 120 is to provide an electromagnetic reference model that incorporates object units and power transmitting units. In detail, the difference between the electromagnetic reference model and the electromagnetic evaluation model is that the electromagnetic reference model does not include a simulation unit, and the simulation unit is used for simulating metal dust on the object unit, so that the object unit in the electromagnetic reference model does not contain metal dust and can be used as a reference value for electromagnetic characteristic analysis.
Step 130 is to perform a comparison step, which obtains a radiation pattern data of the electromagnetic reference model and a radiation pattern data of the electromagnetic evaluation model respectively through electromagnetic signals in the power transmitting unit, and compares the two radiation pattern data to obtain an electromagnetic gain difference. In detail, the radiation pattern data respectively obtain azimuth radiation pattern data and elevation radiation pattern data in a horizontal direction and a vertical direction. In addition, an electromagnetic gain value of the electromagnetic evaluation model and the electromagnetic reference model at a specific angle is obtained from the azimuth radiation pattern data or the elevation radiation pattern data, and the difference value between the electromagnetic gain value of the electromagnetic reference model and the electromagnetic gain value of the electromagnetic evaluation model at the specific angle is the electromagnetic gain difference value.
The steps are all performed in electromagnetic simulation software, and the electromagnetic simulation software of the present invention can be, but is not limited to, IE3D, HFSS or CST. In accordance with the above embodiments, specific examples are set forth below in conjunction with the drawings.
Referring to fig. 2A, 3A and 4A, fig. 2A is a schematic diagram of an electromagnetic evaluation model 200 according to an embodiment 1 of the present invention, fig. 3A is a schematic diagram of an electromagnetic evaluation model 300 according to an embodiment 2 of the present invention, and fig. 4A is a schematic diagram of an electromagnetic evaluation model 400 according to an embodiment 3 of the present invention. The difference between embodiments 1 to 3 is that the simulation unit of the present invention is projected onto the object unit by simulating the light beam of the light source to obtain the projection area, wherein the base point is assumed to be the light source, the beam is assumed to be the light beam, and the projection point of the light beam emitted from the base point onto the object unit simulates the projection area of the light beam emitted from the light source onto the object unit, so that the projection point is used to simulate the size and distribution of the metal dust in the object unit. In addition, comparative example 1 of the present invention is an electromagnetic reference model (not shown) without a simulation unit, which can be referred to the above and is not described herein.
In fig. 2A, the electromagnetic evaluation model 200 of embodiment 1 includes an object unit 210, a power transmitting unit 220 and a simulation unit 230, wherein the object unit 210 and the power transmitting unit 220 are referred to above and are not described herein again. However, referring to fig. 2B, in conjunction with the schematic diagram of the simulation unit 230 of embodiment 1, the simulation unit 230 first constructs at least one base point 231, and the number of base points 231 is at least two, a beam 232 emitted by each base point 231 is projected onto the object unit 210 to form a plurality of projection points 233, and in the electromagnetic evaluation model 200 of fig. 2A, since the distances between the beams (see the beams 232 of fig. 2B) emitted by the base points (see the base point 231 of fig. 2B) are equal and are emitted parallel to each other toward the object unit 210, the formed projection points (see the projection points 233 of fig. 2B) do not overlap, and an arrangement of the projection points can define the object unit 210 to have a uniform metal dust distribution.
In fig. 3A, the electromagnetic evaluation model 300 of embodiment 2 includes an object unit 310, a power transmitting unit 320 and a simulation unit 330, wherein the object unit 310 and the power transmitting unit 320 can refer to the foregoing, and the description is omitted herein. However, please refer to fig. 3B, which illustrates a schematic diagram of the simulation unit 330 according to embodiment 2 of the present invention, the simulation unit 330 firstly constructs at least one base point 331, a plurality of beams 332 emitted by the base point 331 are projected onto the object unit 310 to form a plurality of projection points 333, and in the electromagnetic evaluation model 300 of fig. 3A, since the distances between the beams (see the beams 332 of fig. 3B) emitted by the base points (see the base point 331 of fig. 3B) are equal, and the beams scatter from the base point to the object unit 310 in any direction, the projection points (see the projection points 333 of fig. 3B) formed do not overlap, and an arrangement of the projection points can define the object unit 310 to have a regular metal dust distribution. In detail, the difference between the embodiment 1 and the embodiment 2 is that only one base point of the embodiment 2 emits a plurality of beams in any direction, but the number of base points of the embodiment 1 is at least two and the base points are emitted in the horizontal direction, so that the projection points of the embodiment 2 are denser near the base points and sparser far from the base points, and are not uniformly distributed.
In fig. 4A, the electromagnetic evaluation model 400 of embodiment 3 includes an object unit 410, a power transmitting unit 420 and a simulation unit 430, wherein the object unit 410 and the power transmitting unit 420 are referred to in the foregoing description, and are not repeated herein. However, please refer to fig. 4B, which illustrates a schematic diagram of a simulation unit 430 according to embodiment 3 of the present invention, the simulation unit 430 firstly constructs at least one base point 431, and the number of base points 431 is at least two, a plurality of beams 432 emitted by each base point 431 are projected onto the object unit 410 to form a plurality of projection points 433, and in the electromagnetic evaluation model 400 of fig. 4A, since the distances between the beams (refer to the beams 432 of fig. 4B) emitted by each base point (refer to the base point 431 of fig. 4B) are not equal, and the distances between the base points and the surface normal of the object unit 410 are also not equal, so there are overlapping projection points (refer to the projection points 433 of fig. 4B) and an arrangement of the projection points can define an random metal dust distribution of the object unit 410.
The object units of examples 1 to 3 and comparative example 1 all had an area of 37088mm 2 And the sum of the areas of the projected points is about 5560mm 2 Therefore, the coverage of the projection points obtained in examples 1 to 3 is 10% to 20%, which simulates the metal coverage of the metal dust in the object unit, so it can be assumed that the metal coverage of examples 1 to 3 is 10% to 20%.
Referring to fig. 5A, 5B, 5C and 5D, fig. 5A shows a radiation pattern diagram of comparative example 1 of the present invention, fig. 5B shows a radiation pattern diagram of embodiment 1 of the present invention, fig. 5C shows a radiation pattern diagram of embodiment 2 of the present invention, and fig. 5D shows a radiation pattern diagram of embodiment 3 of the present invention. By means of fig. 5A to 5D, it is possible to observe the variation caused by the influence of the metal dust at a specific angle, and the energy of the main beam is reflected by the influence of the metal dust, so that the phenomenon of energy rising can be seen in the lateral direction (+ -90 degrees) and the rear direction (+ -180 degrees).
In addition, from the radiation pattern diagrams of fig. 5A to 5D, azimuth radiation pattern data and elevation radiation pattern data can be obtained in the horizontal direction and the vertical direction, respectively. Referring to fig. 6A and 6B, fig. 6A shows azimuth radiation patterns of comparative example 1, embodiment 1 to embodiment 3 of the present invention, and fig. 6B shows elevation radiation patterns of comparative example 1, embodiment 1 to embodiment 3 of the present invention.
As can be seen from fig. 6A and 6B, in the case where the metal coverage of embodiments 1 to 3 is 10% to 20%, the overall electromagnetic gain is at a position immediately in front of the power transmitting unit (theta=0 degree). Referring to fig. 6A, the difference in electromagnetic gain between comparative example 1 and examples 1 to 3 is 1.0dBi to 2.0dBi when the power transmitting unit is at the position of Theta of 0 degrees, which means that the electromagnetic characteristics of the vehicle antenna are attenuated by 1.0dB to 2.0dB if the vehicle antenna is disposed directly in front of the vehicle bumper with a metal coverage of 10% to 20%.
In addition, when the power transmitting unit is at the position of-45 degrees Theta, the difference of the electromagnetic gain between the comparative example 1 and the embodiments 1 to 3 is 1.5dBi to 5.0dBi, and the reason for the larger difference is that the distance between the metal dust and the power transmitting unit is relatively close except for the reason that the metal dust is distributed differently, so that the power transmitting unit is more sensitive. However, when the power transmitting unit is at the position of +45 degrees Theta, the difference of the electromagnetic gain between the comparative example 1 and the embodiments 1 to 3 is 0.5dBi to 1.5dBi, probably because the metal dust is far from the power transmitting unit and the relative attenuation amplitude is consistent.
The results of the electromagnetic gain values and the electromagnetic gain differences at specific angles with respect to comparative example 1 and examples 1 to 3 are shown in the following tables one to three.
The present invention simulates the distribution of metal dust in the object unit by constructing different projection point distributions, and it can be seen from the table one to the table three that the difference between the distribution of metal dust and the distribution position of the metal dust in the comparative example 1 and the metal dust in the embodiments 1 to 3 can cause different characteristics to be presented under a specific angle, and the difference of the electromagnetic gain is smaller than a predetermined value, for example, 4.0dBi, as a problem of judging in advance whether the setting position between the vehicle bumper and the vehicle antenna has excessive gain attenuation at the specific angle.
Therefore, in application, the distance between the vehicle antenna and the vehicle wire protection rod can be a multiple of one half wavelength of the vehicle antenna, wherein the vehicle antenna can be, but is not limited to, an array antenna, and the vehicle safety rod is made of plastic materials, which can be, but is not limited to, polypropylene (PP), polyetherimide (PEI), ABS resin or a blend of Polycarbonate (PC) and polyethylene terephthalate (Polyethylene terephthalate, PET), and then the electromagnetic property analysis method is used for adjusting the metal dust content in the vehicle safety rod or the setting positions of the vehicle antenna and the vehicle safety rod, so that the electromagnetic gain value of the vehicle antenna can be in accordance with the specification.
Fig. 7 is a schematic diagram of an electronic device 500 according to another embodiment of the invention. The electronic device 500 includes a memory 510 and a processor 520, wherein the memory 510 stores an electromagnetic property evaluation program 600, and the processor 520 is coupled to the memory 510 and is used for executing the electromagnetic property evaluation program 600. Electromagnetic property evaluation program 600 includes an electromagnetic evaluation model creation module 610, an electromagnetic reference model creation module 620, and a comparison module 630.
In detail, the electromagnetic evaluation model 610 includes an object unit 611, a power transmitting unit 612 and a simulation unit 613. The object unit 611 has any geometric shape and has an object information, and the object information may be, but is not limited to, area information or volume information. The power transmitting unit 612 has an electromagnetic signal. The simulation unit 613 defines at least one base point emitting a plurality of beams forming a plurality of projection points, and the projection points are used to simulate a plurality of metal dusts in the object unit. The object unit 611, the power transmitting unit 612 and the simulation unit 613 are combined to form an electromagnetic estimation model, and the object unit 611 is disposed between the power transmitting unit 612 and the simulation unit 613, and a projection point coverage rate of the electromagnetic estimation model is obtained according to the object information and the sum of areas of the projection points, and the projection point coverage rate is a metal coverage rate of metal dust in the object unit 611.
In addition, the simulation unit 613 can obtain different arrangements of projection points according to different numbers of base points and beams to define the distribution of the metal dust of the object unit 611, and the embodiment of the simulation unit 613 can refer to fig. 2A to 4B, which is not repeated herein.
The electromagnetic reference model creation module 620 is configured to combine the object unit 611 and the power transmitting unit 612 to obtain an electromagnetic reference model. The description of the electromagnetic reference model can be referred to the foregoing, and is not repeated herein.
The comparison module 630 obtains a radiation pattern data of the electromagnetic reference model and a radiation pattern data of the electromagnetic evaluation model by electromagnetic signals respectively, and compares the two radiation pattern data to obtain an electromagnetic gain difference. In detail, the radiation pattern data respectively obtain azimuth radiation pattern data and elevation radiation pattern data in a horizontal direction and a vertical direction. In addition, an electromagnetic gain value of the electromagnetic evaluation model and the electromagnetic reference model at a specific angle is obtained from the azimuth radiation pattern data or the elevation radiation pattern data, and the difference value between the electromagnetic gain value of the electromagnetic reference model and the electromagnetic gain value of the electromagnetic evaluation model at the specific angle is the electromagnetic gain difference value.
In other embodiments, azimuth radiation pattern data or elevation radiation pattern data may be obtained, for example, only azimuth radiation pattern data is used to obtain electromagnetic gain values of the electromagnetic evaluation model and the electromagnetic reference model at a specific angle, and the difference between the electromagnetic gain values of the electromagnetic reference model and the electromagnetic evaluation model at the specific angle is the electromagnetic gain difference.
In addition, the electromagnetic property evaluation program 600 may further include an evaluation module (not shown) for evaluating whether the electromagnetic gain difference between the electromagnetic evaluation model and the electromagnetic reference model at a specific angle is smaller than a predetermined value.
In summary, the electromagnetic characteristic analysis method and the electronic device of the invention can simulate and analyze the electromagnetic gain attenuation degree between the vehicle bumper and the vehicle antenna by constructing objects with different metal dust distributions through electromagnetic simulation software, and normalize acceptable metal components or pre-judge the positions where problems may occur in application, so as to reduce the cost and development time of multiple verification between the vehicle antenna and the vehicle bumper.
While the present invention has been described with reference to the embodiments, it should be understood that the invention is not limited thereto, but may be variously modified and modified by those skilled in the art without departing from the spirit and scope of the present invention, and thus the scope of the present invention should be construed as defined by the appended claims.
Claims (19)
1. An electromagnetic characteristic analysis method for analyzing an electromagnetic characteristic of an object matched with a power emitting element, the electromagnetic characteristic analysis method comprises:
performing an electromagnetic evaluation model building step, including:
establishing an object unit, wherein the object unit is of any geometric shape and has object information;
establishing a power transmitting unit, wherein the power transmitting unit is provided with an electromagnetic signal; and
establishing a simulation unit, wherein the simulation unit defines at least one base point to emit a plurality of beams to form a plurality of projection points, and the projection points are used for simulating a plurality of metal dust in the object unit;
combining the object unit, the power emission unit and the simulation unit to form an electromagnetic evaluation model, and obtaining a projection point coverage rate of the electromagnetic evaluation model according to the object information and the sum of areas of the projection points, wherein the projection point coverage rate is a metal coverage rate of the metal dust in the object unit;
providing an electromagnetic reference model, wherein the electromagnetic reference model combines the object unit and the power transmitting unit; and
and performing a comparison step, wherein the comparison step respectively obtains radiation pattern data of the electromagnetic reference model and radiation pattern data of the electromagnetic evaluation model through the electromagnetic signals, and compares the two radiation pattern data to obtain an electromagnetic gain difference value.
2. The method of claim 1, wherein the object information is area information or volume information.
3. The method of claim 1, wherein the number of the at least one base point in the simulation unit is at least two, and each of the base points emits a beam to form the plurality of projection points.
4. The method of claim 3, wherein in the electromagnetic evaluation model, the beams are equally spaced, and an arrangement of the projection points is formed to define the object unit as having a uniform metal dust distribution.
5. The method of claim 1, wherein the at least one base point emits the beams to form the projection points in the simulation unit.
6. The method of claim 5, wherein the electromagnetic evaluation model is configured such that the beams are equally spaced apart, and an arrangement of the projection points defines a regular metal dust distribution in the object unit.
7. The method of claim 1, wherein the number of the at least one base point in the simulation unit is at least two, and each of the base points emits the beams to form the projection points.
8. The method of claim 7, wherein in the electromagnetic evaluation model, the beams are not equally spaced, and an arrangement of the projection points is formed to define the object unit as having a random metal dust distribution.
9. The method of claim 1, wherein the radiation pattern data is a azimuth radiation pattern data and an elevation radiation pattern data respectively obtained in a horizontal direction and a vertical direction.
10. The method of claim 9, wherein an electromagnetic gain value of the electromagnetic evaluation model and the electromagnetic reference model at a specific angle is obtained from the azimuth radiation pattern data or the elevation radiation pattern data.
11. The electromagnetic property analysis method of claim 10, further comprising:
and evaluating whether the electromagnetic gain difference between the electromagnetic evaluation model and the electromagnetic reference model at the specific angle is smaller than a preset value.
12. An electronic device, the electronic device comprising:
a memory for storing an electromagnetic property evaluation program; and
a processor coupled to the memory for executing the electromagnetic property evaluation program;
wherein the electromagnetic characteristic evaluation program includes:
an electromagnetic assessment model building module, the electromagnetic assessment model building module comprising:
an object unit, the object unit is of any geometric shape and has object information;
a power transmitting unit having an electromagnetic signal; and
a simulation unit, defining at least one base point to emit a plurality of beams to form a plurality of projection points, wherein the projection points are used for simulating a plurality of metal dust in the object unit;
combining the object unit, the power emission unit and the simulation unit to obtain an electromagnetic evaluation model, and obtaining a projection point coverage rate of the electromagnetic evaluation model according to the object information and the sum of areas of the projection points, wherein the projection point coverage rate is a metal coverage rate of the metal dust in the object unit;
the electromagnetic reference model building module is used for combining the object unit and the power transmitting unit to obtain an electromagnetic reference model; and
the comparison module is used for respectively obtaining radiation pattern data of the electromagnetic reference model and radiation pattern data of the electromagnetic evaluation model by the electromagnetic signals and comparing the two radiation pattern data to obtain an electromagnetic gain difference value.
13. The electronic device of claim 12, wherein the object information is one of area information and volume information.
14. The electronic device of claim 12, wherein:
in the simulation unit, the number of the at least one base point is at least two, and each base point emits one beam to form the projection points; and
in the electromagnetic evaluation model, the beams are equally spaced, and an arrangement of the projection points is formed to define the object unit as having a uniform metal dust distribution.
15. The electronic device of claim 12, wherein:
in the simulation unit, the at least one base point emits the beams to form the projection points; and
in the electromagnetic evaluation model, the beams are equally spaced, and an arrangement of the projection points is formed to define the object unit as having a regular metal dust distribution.
16. The electronic device of claim 12, wherein:
in the simulation unit, the number of the at least one base point is at least two, and each base point emits the beams to form the projection points; and
in the electromagnetic evaluation model, the beams are not equally spaced, and an arrangement of the projection points is formed to define the object unit as having a random metal dust distribution.
17. The electronic device of claim 12, wherein the radiation pattern data is a azimuth radiation pattern data and an elevation radiation pattern data respectively obtained in a horizontal direction and a vertical direction.
18. The electronic device of claim 17, wherein an electromagnetic gain value of the electromagnetic assessment model and the electromagnetic reference model at a particular angle is obtained in the azimuth radiation pattern data or the elevation radiation pattern data.
19. The electronic device of claim 18, wherein the electromagnetic property evaluation program further comprises:
the evaluation module is used for evaluating whether the electromagnetic gain difference value of the electromagnetic evaluation model and the electromagnetic reference model at the specific angle is smaller than a preset value.
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