Method for evaluating safety of electromagnetic environment in automobile to human body

Abstract

The invention discloses a method for evaluating the safety of an electromagnetic environment in an automobile to a human body. The method comprises the following steps: firstly, measuring a plurality of electromagnetic wave parameters, converting to obtain a first score, endowing a first weight, and calculating an electromagnetic wave score; obtaining a plurality of self-evaluation parameters, converting to obtain a second score, endowing the second score with a second weight, and calculating a human body score; establishing a model containing the driver and the passengers, performing simulation to obtain a third score, and after a third weight is given, calculating a simulation score; then, after the electromagnetic wave score, the human body score and the simulation score are endowed with weights, summation is performed to obtain a total score; and finally, dividing electromagnetic safety levels according to the total score.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic environment assessment, and more specifically, to a method for assessing the safety of a human body in an electromagnetic environment within a car. Background Art

[0002] As the level of automobile automation and intelligence continues to improve, the number of electrical, electronic and communication devices in the car continues to increase. These devices emit electromagnetic waves into space, making the driver and passengers in the electromagnetic field environment in the car. Therefore, it is necessary to accurately evaluate the electromagnetic environment in the car.

[0003] The traditional evaluation and measurement method only measures the field strength, which does not take into account the differences between individuals and the characteristics of electromagnetic waves. At the same time, it does not integrate computer simulation results for evaluation. Therefore, the traditional evaluation and measurement method has low accuracy.

[0004] The prior art discloses a method for quantifying the uncertainty of electromagnetic exposure safety of electric vehicle wireless charging devices. The method first establishes a numerical simulation model of human electromagnetic exposure safety; secondly, the offset between magnetic coupling mechanisms and human individual difference data and electromagnetic exposure data are obtained, and used as the input of the numerical simulation model of human electromagnetic exposure safety, and then the uncertainty factors of human electromagnetic exposure safety are quantitatively analyzed according to the grey correlation theory model; finally, the influence of uncertainty factors on human electromagnetic exposure safety is analyzed based on the sobol global sensitivity algorithm. This method does not combine the actual measured data of the vehicle in the actual scene for analysis, and the accuracy is low. Summary of the invention

[0005] In view of the defect of low accuracy in the prior art, the present invention provides a method for evaluating the safety of the electromagnetic environment in a car to the human body, which fully considers the differences between each individual and the differences between electromagnetic wave characteristics, and also integrates computer simulation data to provide evaluation results.

[0006] The primary purpose of the present invention is to solve the above technical problems. The technical solution of the present invention is as follows:

[0007] A method for evaluating the safety of a person in an electromagnetic environment in a car, comprising:

[0008] S1: measuring a plurality of electromagnetic wave parameters in the vehicle, converting the electromagnetic wave parameters into corresponding first scores, assigning first preset weights to the first scores respectively, and calculating the electromagnetic wave scores based on the first scores and the first preset weights;

[0009] S2: obtaining several self-assessment parameters of the driver and passenger, converting the self-assessment parameters into corresponding second scores, assigning second preset weights to the second scores respectively, and calculating a human body score based on the second scores and the second preset weights;

[0010] S3: establishing a car model including a driver and passengers, performing electromagnetic numerical simulation calculation on the model to obtain a third score, assigning a third preset weight, and calculating a simulation score based on the third score and the third preset weight;

[0011] S4: assigning fourth weights to the electromagnetic wave score, the human body score, and the simulation score respectively, and summing them according to the weights to obtain a total score;

[0012] S5: Classify the electromagnetic safety level of the automobile according to the total score.

[0013] Furthermore, the electromagnetic wave parameters include:

[0014] The electromagnetic wave field strength value, electromagnetic wave frequency, electromagnetic wave type, and the incident angle of the electromagnetic wave entering the body of the driver and passengers.

[0015] Furthermore, the incident angle of the electromagnetic wave entering the body of the driver or passenger is measured by using an amplitude method or a phase method to measure the arrival direction of the electromagnetic wave, thereby obtaining the incident angle of the electromagnetic wave entering the body of the driver or passenger.

[0016] Furthermore, the formula of the electromagnetic wave fraction S1 is as follows:

[0017] S1=α0·SA+α1·S F +α2·SS+α3·S θ

[0018] Among them, α0, α1, α2, α3 represent weight factors, S A Indicates the electromagnetic wave field strength value fraction, S F Indicates the frequency fraction of electromagnetic waves, S S Represents the electromagnetic wave type score, S θ Indicates the incident angle of electromagnetic waves entering the body of the driver and passenger.

[0019] Furthermore, the electromagnetic wave self-assessment parameters include:

[0020] The area of ​​electromagnetic wave exposure of drivers and passengers, the duration of electromagnetic wave action on drivers and passengers, and the differences among drivers and passengers themselves.

[0021] Furthermore, the driver and passenger's own difference self-assessment parameters include: whether they are children, elderly, pregnant women, patients, or people with metal or magnetic material implants.

[0022] Furthermore, the formula of human body score S2 is as follows:

[0023] S2=α4·S E +α5·S T +α6·S P

[0024] Among them, α4, α5, α6 represent weight factors, S E Indicates the electromagnetic wave exposure area fraction of drivers and passengers, S T Indicates the duration of electromagnetic waves acting on the driver and passengers, S P Indicates the differences among drivers and passengers.

[0025] Furthermore, the total score S M The formula is as follows:

[0026] S M =β·(S1+S2)+(1-β)·(S1′+S2)

[0027] Among them, β is the composite coefficient, S1 represents the electromagnetic wave score, S2 represents the human body score, and S1′ represents the simulation score.

[0028] Furthermore, the formula of the simulation score S1′ is as follows:

[0029] S1′=α0·S A ′+α1·S F +α2·S S +α3·S θ

[0030] Among them, α0, α1, α2, α3 represent weight factors, S A ′ represents the simulated electromagnetic wave field strength value score, S F Indicates the frequency fraction of electromagnetic waves, S S Represents the electromagnetic wave type score, S θ Indicates the incident angle of electromagnetic waves entering the body of the driver and passenger.

[0031] An evaluation device for the electromagnetic environment in a car to human safety, comprising:

[0032] An electromagnetic wave score measurement module: measures a plurality of electromagnetic wave parameters in the vehicle, converts the electromagnetic wave parameters into corresponding first scores, assigns first preset weights to the first scores respectively, and calculates the electromagnetic wave scores based on the first scores and the first preset weights;

[0033] A human body score evaluation module: obtaining a plurality of self-evaluation parameters of the driver and passenger, converting the self-evaluation parameters into corresponding second scores, assigning second preset weights to the second scores respectively, and calculating the human body score based on the second scores and the second preset weights;

[0034] Modeling and simulation module: establishing a car model including a driver and passengers, performing electromagnetic numerical simulation calculation on the model, obtaining a third score, assigning a third preset weight, and calculating a simulation score based on the third score and the third preset weight;

[0035] Score summing module: assigning a fourth weight to the electromagnetic wave score, the human body score, and the simulation score respectively, summing them according to the weights, and obtaining a total score;

[0036] Grade classification module: classify the automobile electromagnetic safety grade according to the total score.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] The present invention measures several electromagnetic wave parameters in the car, thereby taking into account the differences in the characteristics of the electromagnetic waves. It also takes into account the individual differences of each person by obtaining several self-assessment parameters of the driver and passengers. It also performs electromagnetic numerical simulation calculations on a car model including the driver and passengers, thereby comprehensively evaluating the computer simulation results. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a flow chart of a method for evaluating the safety of the electromagnetic environment in a car to the human body provided in Example 1.

[0040] Figure 2 This is a structural diagram of a device for evaluating the safety of the electromagnetic environment in a car to the human body provided in Example 1. DETAILED DESCRIPTION

[0041] The drawings are for illustrative purposes only and should not be construed as limiting the present patent;

[0042] In order to better illustrate the present embodiment, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product;

[0043] It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0044] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0045] Example 1

[0046] like Figure 1 As shown, a method for evaluating the safety of the electromagnetic environment in a car to a human body includes:

[0047] S1: measuring a plurality of electromagnetic wave parameters in the vehicle, converting the electromagnetic wave parameters into corresponding first scores, assigning first preset weights to the first scores respectively, and calculating the electromagnetic wave scores based on the first scores and the first preset weights;

[0048] S2: obtaining several self-assessment parameters of the driver and passenger, converting the self-assessment parameters into corresponding second scores, assigning second preset weights to the second scores respectively, and calculating a human body score based on the second scores and the second preset weights;

[0049] S3: establishing a car model including a driver and passengers, performing electromagnetic numerical simulation calculation on the model to obtain a third score, assigning a third preset weight, and calculating a simulation score based on the third score and the third preset weight;

[0050] S4: assigning fourth weights to the electromagnetic wave score, the human body score, and the simulation score respectively, and summing them according to the weights to obtain a total score;

[0051] S5: Classify the electromagnetic safety level of the automobile according to the total score.

[0052] Furthermore, the electromagnetic wave parameters include:

[0053] The electromagnetic wave field strength value, electromagnetic wave frequency, electromagnetic wave type, and the incident angle of the electromagnetic wave entering the body of the driver and passengers.

[0054] It should be noted that since electromagnetic waves of different frequencies have different wavelengths, and thus different penetration, and the specific absorption values ​​of quantum energy between electromagnetic waves of different frequencies are also different, in addition, electromagnetic biological effects such as electromagnetic resonance effects and thermal effects of electromagnetic waves of different frequency bands are also significantly different. Therefore, measuring electromagnetic wave frequency parameters can improve the comprehensiveness and accuracy of the evaluation, thereby reducing the evaluation error;

[0055] Since different types of electromagnetic waves, such as continuous waves, pulse waves (i.e., transient waves) and modulated waves, have different degrees of electromagnetic bioeffects, adding electromagnetic wave type parameters can further improve the comprehensiveness and accuracy of the assessment, thereby further reducing the assessment error;

[0056] Since the incident angle of electromagnetic waves entering the driver's and passengers' bodies affects the number and angle of transmitted waves entering the human body, the incident angle of electromagnetic waves entering the driver's and passengers' bodies causes the human body to have different degrees of electromagnetic bioeffects. Therefore, increasing the incident angle parameter of electromagnetic waves entering the driver's and passengers' bodies can further improve the comprehensiveness and accuracy of the evaluation, thereby further reducing the evaluation error.

[0057] It should be noted that the electromagnetic environment inside a car is mainly generated by other electronic and electrical systems such as on-board antennas, cable harnesses and crystal oscillators. For fuel vehicles, the main emission sources are the engine ignition system. For electric vehicles, the main emission sources are the motor and electronic control system, and DC-DC. In addition to the emission sources generated by the car itself, electronic and electrical devices such as mobile phones carried by people in the car and the charging gun area when charging with a charging pile will also generate electromagnetic fields in the car.

[0058] It should be noted that the use of simulation evaluation methods can obtain the magnitude and distribution of the electric field inside the human body. At the same time, it is not limited by the measurement site of the radio darkroom, and the evaluation results can be obtained as early as possible, saving time and cost. However, at present, due to the errors and deficiencies caused by factors such as the modeling parameters and simplification accuracy of the digital models of the car and human body, the calibration accuracy of the electromagnetic wave emission source, and the rapid convergence algorithm of complex electrically large targets, the simulation calculation results of the magnitude and distribution of the electric field in the human body have large errors.

[0059] In a specific embodiment, the electromagnetic wave field strength value scoring standard is as follows:

[0060] If the electromagnetic wave field strength value A≥2A0, the electromagnetic wave field strength value score S A Recorded as -100;

[0061] If the electromagnetic wave field strength value A0≤A≤2A0, the electromagnetic wave field strength value score S A Recorded as 0;

[0062] If the electromagnetic wave field strength value is 0.5A0≤A≤A0, the electromagnetic wave field strength value score S A Recorded as 20;

[0063] If the electromagnetic wave field strength value is 0.1A0≤A≤0.5A0, the electromagnetic wave field strength value score S A Recorded as 50;

[0064] If the electromagnetic wave field strength value A is less than 0.1A0, the electromagnetic wave field strength value score S A Recorded as 100;

[0065] Among them, A0 is the field strength safety limit recommended by the national standard.

[0066] In a specific embodiment, a measurement probe is used to obtain a field strength value under a uniform speed condition.

[0067] In a specific embodiment, the electromagnetic wave frequency scoring criteria are as follows:

[0068] If 1Hz≤F≤100Hz or 300MHz≤F≤77GHz, the electromagnetic wave frequency fraction S F Recorded as 0;

[0069] If F≤100GH z , and F does not belong to 1H z ≤F≤100H z , and F does not belong to 300MH z ≤F≤77GHz, electromagnetic wave frequency fraction S F Recorded as 100.

[0070] In a specific embodiment, a spectrum analyzer is used to measure the frequency of electromagnetic waves.

[0071] It should be noted that the frequency of electromagnetic waves is usually lower than the 77GHz operating frequency of the car anti-collision radar. This frequency is in the non-ionizing zone and has an impact on human safety. The electromagnetic biological effects of the electromagnetic field in the car are significant in the low-frequency band and high-frequency microwave band. In the extremely low frequency band below 100Hz, it mainly resonates with the low-frequency natural environment of the earth, the 50-60Hz industrial frequency low-frequency environment, and the low-frequency EEG / ECG / EMG of the human body; the wavelength of this frequency band is long and the penetration is strong; the wavelength of the high-frequency microwave band above 300MHz is short and the penetration is weak, but the larger the specific absorption value of quantum energy, the easier it is to produce electromagnetic biological thermal effects.

[0072] In a specific embodiment, the electromagnetic wave type scoring criteria are as follows:

[0073] If the electromagnetic wave type S is a pulse wave or a modulated wave, then the electromagnetic wave type score S S Recorded as 0;

[0074] If the electromagnetic wave type S is a continuous wave, then the electromagnetic wave type score S S Recorded as 100.

[0075] In a specific embodiment, the scoring criteria for the incident angle of electromagnetic waves entering the human body of the driver and passenger are as follows:

[0076] If the incident angle of the electromagnetic wave entering the human body of the driver and passenger is 0°<θ<45°, then the incident angle fraction S of the electromagnetic wave entering the human body of the driver and passenger is θ Score 0;

[0077] If the incident angle of the electromagnetic wave entering the human body is 45°≤θ≤90°, then the incident angle fraction S of the electromagnetic wave entering the human body is θ Score 100 points.

[0078] It should be noted that when electromagnetic waves enter the human body from the air, there are usually incident waves, reflected waves and transmitted waves entering the human body, and the incident angle of the incident wave affects the amount and angle of the transmitted waves entering the human body. Therefore, the incident angle of the electromagnetic wave entering the body of the driver and passenger has an impact on human safety; when the electromagnetic wave is incident on the human body surface at a vertical angle, the more transmitted waves enter the human body, and when the electromagnetic wave is incident on the human body surface at a nearly parallel angle, the fewer transmitted waves enter the human body. Usually, the electromagnetic radiation in the car radiates more from the chassis upward. If the tangential angle θ between the incident wave in the car and the human body surface is in the range of 45 to 90°, more transmitted waves enter the human body, and the electromagnetic biological effect is more obvious.

[0079] Furthermore, the incident angle of the electromagnetic wave entering the body of the driver or passenger is measured by using an amplitude method or a phase method to measure the arrival direction of the electromagnetic wave, thereby obtaining the incident angle of the electromagnetic wave entering the body of the driver or passenger.

[0080] Furthermore, the formula of the electromagnetic wave fraction S1 is as follows:

[0081] S1=α0·SA+α1·S F +α2·SS+α3·S θ

[0082] Among them, α0, α1, α2, α3 represent weight factors, S A Indicates the electromagnetic wave field strength value fraction, S F Indicates the frequency fraction of electromagnetic waves, S S Represents the electromagnetic wave type score, S θ Indicates the incident angle of electromagnetic waves entering the body of the driver and passenger.

[0083] In a specific embodiment, α0=0.9, α1=0.04, α2=0.03, α3=0.03, wherein α0+α1+α2+α3=1.

[0084] Furthermore, the electromagnetic wave self-assessment parameters include:

[0085] The area of ​​electromagnetic wave exposure of drivers and passengers, the duration of electromagnetic wave action on drivers and passengers, and the differences among drivers and passengers themselves.

[0086] It should be noted that, since the size of the area of ​​the human body exposed to electromagnetic waves has an impact on the amount of electromagnetic waves entering the human body, different electromagnetic wave exposure area parameters of drivers and passengers have different degrees of electromagnetic bio-effects. Therefore, the electromagnetic wave exposure area parameters of drivers and passengers can further improve the comprehensiveness and accuracy of the assessment, thereby further reducing the assessment error.

[0087] Since the duration of electromagnetic waves acting on the human body is different, the amount of electromagnetic accumulation in the human body is also different. Therefore, the duration of electromagnetic waves acting on the human body has different degrees of electromagnetic biological effects. Therefore, adding the parameter of the duration of electromagnetic waves acting on drivers and passengers can further improve the comprehensiveness and accuracy of the assessment, thereby further reducing the assessment error.

[0088] In a specific embodiment, the scoring criteria for the electromagnetic wave exposure area of ​​the driver and passengers are as follows:

[0089] If the electromagnetic wave exposure area of ​​the driver and passengers Then the electromagnetic wave exposure area fraction S of the driver and passengers is E Recorded as -100 points;

[0090] If the electromagnetic wave exposure area of ​​the driver and passengers Then the electromagnetic wave exposure area fraction S of the driver and passengers is E Score 0.

[0091] The scoring criteria may also be:

[0092] If the complex and delicate parts of the occupant's body are exposed, the electromagnetic wave exposure area fraction S of the occupant E is recorded as -100 points;

[0093] If there is no exposure of the complex and delicate parts of the occupant's body, the electromagnetic wave exposure area fraction S of the occupant E is recorded as 0 points.

[0094] Among them, the complex and delicate parts refer to parts such as the human eyes.

[0095] In a specific embodiment, a flexible ruler is used to calculate the exposure area, and the exposure area is comprehensively calculated in combination with whether radiation protection-related clothing is worn.

[0096] It should be noted that the larger the electromagnetic wave exposure area of the occupant, the more electromagnetic waves enter the human body, and vice versa.

[0097] In a specific embodiment, the scoring standard for the action time of electromagnetic waves on the occupant is as follows:

[0098] If the radiation dose U≥U0 or the human body average specific absorption rate SAR≥10W / kg, the action time fraction S of the electromagnetic waves on the occupant T is recorded as -100 points;

[0099] If the radiation dose U<U0 or the human body average specific absorption rate SAR<10W / kg, the action time S of the electromagnetic waves on the occupant T The score is recorded as 0 points.

[0100] Among them, the radiation dose U is the product of the electromagnetic wave power intensity and the irradiation time of the occupant.

[0101] In a specific embodiment, a timer is used to calculate the time from when the occupant enters the car to when the occupant leaves the car, and this is used as the irradiation time of the electromagnetic waves on the occupant.

[0102] It should be noted that according to the cumulative effect of electromagnetic biological effects, when the radiation intensity value of electromagnetic waves, especially microwaves, is determined, the longer the action time of the electromagnetic waves, the more obvious the electromagnetic biological effect. If the radiation dose U reaches a certain threshold U0, it will cause the human body temperature to rise and then generate an electromagnetic thermal effect. The limit value of the human body average specific absorption rate SAR in the car is 10W / kg. When SAR exceeds this value and under certain action time conditions, it will produce a thermal effect and even cause damage to human tissues, and the electromagnetic biological effect is obvious.

[0103] Furthermore, the self-evaluation parameters of the occupant's own differences include: whether the occupant is a child, an elderly person, a pregnant woman, a patient, or a person with metal or magnetic material implants.

[0104] It should be noted that due to individual differences in human age (such as children and the elderly), physical condition (such as fat or thin, patients and pregnant women), whether or not metal objects / magnetic materials are implanted or carried, etc., the human body's tolerance, water content and dielectric parameters are different. Therefore, the differences of the drivers and passengers themselves have different degrees of electromagnetic bioeffects. Therefore, adding the parameters of the drivers and passengers' own differences can further improve the comprehensiveness and accuracy of the evaluation, thereby further reducing the evaluation errors.

[0105] In a specific embodiment, the scoring criteria for the driver and passenger's own differences are as follows:

[0106] If the driver or passenger is a child (≤6 years old), an elderly person (≥60 years old), a pregnant woman, a patient, or someone with metal or magnetic materials, the driver or passenger's own difference score S P It is set to -100 points;

[0107] If the driver or passenger is someone else, the driver or passenger’s own difference score S P Set to 0 points.

[0108] It should be noted that vulnerable groups such as children (≤6 years old), the elderly (≥60 years old), pregnant women and patients have a weaker tolerance to electromagnetic radiation than normal people. Therefore, automobile electromagnetic radiation has a greater impact on vulnerable groups. In addition, when metal or magnetic materials are worn or implanted in the human body, the electromagnetic radiation induced field strength will be locally enhanced. Therefore, people with metal implants or magnetic materials in their bodies are more affected by electromagnetic radiation.

[0109] Furthermore, the formula of human body score S2 is as follows:

[0110] S2=α4·S E +α5·S T +α6·S P

[0111] Among them, α4, α5, α6 represent weight factors, S E Indicates the electromagnetic wave exposure area fraction of drivers and passengers, S T Indicates the duration of electromagnetic waves acting on the driver and passengers, S P Indicates the differences among drivers and passengers.

[0112] In a specific embodiment, α4=0.02, α5=0.02, α6=0.02.

[0113] Furthermore, the total score S M The formula is as follows:

[0114] S M =β·(S1+S2)+(1-β)·(S1′+S2)

[0115] Among them, β is the composite coefficient, S1 represents the electromagnetic wave score, S2 represents the human body score, and S1′ represents the simulation score.

[0116] It should be noted that the value of β is set and adjusted according to the evaluation accuracy of the measurement method and the simulation method.

[0117] In a specific embodiment, β=0.6.

[0118] Furthermore, the formula of the simulation score S1′ is as follows:

[0119] S1′=α0·S A ′+α1·S F +α2·S S +α3·S θ

[0120] Among them, α0, α1, α2, α3 represent weight factors, S A ′ represents the simulated electromagnetic wave field strength value score, S F Indicates the frequency fraction of electromagnetic waves, S S Represents the electromagnetic wave type score, S θ Indicates the incident angle of electromagnetic waves entering the body of the driver and passenger.

[0121] like Figure 2 As shown, a device for evaluating the safety of electromagnetic environment in a car to a human body comprises:

[0122] An electromagnetic wave score measurement module: measures a plurality of electromagnetic wave parameters in the vehicle, converts the electromagnetic wave parameters into corresponding first scores, assigns first preset weights to the first scores respectively, and calculates the electromagnetic wave scores based on the first scores and the first preset weights;

[0123] A human body score evaluation module: obtaining a plurality of self-evaluation parameters of the driver and passenger, converting the self-evaluation parameters into corresponding second scores, assigning second preset weights to the second scores respectively, and calculating the human body score based on the second scores and the second preset weights;

[0124] Modeling and simulation module: establishing a car model including a driver and passengers, performing electromagnetic numerical simulation calculation on the model, obtaining a third score, assigning a third preset weight, and calculating a simulation score based on the third score and the third preset weight;

[0125] Score summing module: assigning a fourth weight to the electromagnetic wave score, the human body score, and the simulation score respectively, summing them according to the weights, and obtaining a total score;

[0126] Grade classification module: classify the automobile electromagnetic safety grade according to the total score.

[0127] The same or similar reference numerals correspond to the same or similar components;

[0128] The terms used in the drawings to describe positional relationships are only used for illustrative purposes and should not be construed as limiting this patent;

[0129] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for evaluating the safety of the electromagnetic environment in a car to the human body, characterized in that: include: S1: measuring a plurality of electromagnetic wave parameters in the vehicle, converting the electromagnetic wave parameters into corresponding first scores, assigning first preset weights to the first scores respectively, and calculating the electromagnetic wave scores based on the first scores and the first preset weights; S2: obtaining several self-assessment parameters of the driver and passenger, converting the self-assessment parameters into corresponding second scores, assigning second preset weights to the second scores respectively, and calculating a human body score based on the second scores and the second preset weights; S3: establishing a car model including a driver and passengers, performing electromagnetic numerical simulation calculation on the model to obtain a third score, assigning a third preset weight, and calculating a simulation score based on the third score and the third preset weight; S4: assigning fourth weights to the electromagnetic wave score, the human body score, and the simulation score respectively, and summing them according to the weights to obtain a total score; S5: Classify the electromagnetic safety level of the automobile according to the total score.

2. According to claim 1, a method for evaluating the safety of the electromagnetic environment in a car to the human body, characterized in that: The electromagnetic wave parameters include: The electromagnetic wave field strength value, electromagnetic wave frequency, electromagnetic wave type, and the incident angle of the electromagnetic wave entering the body of the driver and passengers.

3. The method for evaluating the safety of the electromagnetic environment in a car to the human body according to claim 2, characterized in that: The incident angle of the electromagnetic wave entering the body of the driver or passenger is measured by using the amplitude method or the phase method to measure the arrival direction of the electromagnetic wave, thereby obtaining the incident angle of the electromagnetic wave entering the body of the driver or passenger.

4. The method for evaluating the safety of the electromagnetic environment in a car to the human body according to claim 2, characterized in that: The formula for the electromagnetic wave fraction S1 is as follows: S1=α0·SA+α1·S F +α2·SS+α3·S θ Among them, α0, α1, α2, α3 represent weight factors, S A Indicates the electromagnetic wave field strength value fraction, S F Indicates the frequency fraction of electromagnetic waves, S S Represents the electromagnetic wave type score, S θ Indicates the incident angle of electromagnetic waves entering the body of the driver and passenger.

5. The method for evaluating the safety of the electromagnetic environment in a car to the human body according to claim 4, characterized in that: The electromagnetic wave self-assessment parameters include: The area of ​​electromagnetic wave exposure of drivers and passengers, the duration of electromagnetic wave action on drivers and passengers, and the differences among drivers and passengers themselves.

6. The method for evaluating the safety of the electromagnetic environment in a car to the human body according to claim 5, characterized in that: The self-assessment parameters of the drivers and passengers include: whether they are children, elderly, pregnant women, patients, or people with metal or magnetic material implants.

7. The method for evaluating the safety of the electromagnetic environment in a car to the human body according to claim 5, characterized in that: The formula for the human body fraction S2 is as follows: S2=α4·S E +α5·S T +α6·S P Among them, α4, α5, α6 represent weight factors, S E Indicates the electromagnetic wave exposure area fraction of drivers and passengers, S T Indicates the duration of electromagnetic waves acting on drivers and passengers, S P Indicates the differences among drivers and passengers.

8. The method for evaluating the safety of the electromagnetic environment in a car to the human body according to claim 7, characterized in that: Total score M The formula is as follows: S M =β·(S1+S2)+(1-β)·(S1′+S2) Among them, β is the composite coefficient, S1 represents the electromagnetic wave score, S2 represents the human body score, and S1′ represents the simulation score.

9. The method for evaluating the safety of the electromagnetic environment in a car to the human body according to claim 8, characterized in that: The formula for the simulation score S1′ is as follows: S1′=α0·S A ′+α1·S F +α2·S S +α3·S θ Among them, α0, α1, α2, α3 represent weight factors, S A ′ represents the simulated electromagnetic wave field strength value score, S F Indicates the frequency fraction of electromagnetic waves, S S Represents the electromagnetic wave type score, S θ Indicates the incident angle of electromagnetic waves entering the body of the driver and passenger.

10. An evaluation device for the electromagnetic environment in a car to human safety, applied to the evaluation method according to any one of claims 1 to 9, characterized in that: include: An electromagnetic wave score measurement module: measures a plurality of electromagnetic wave parameters in the vehicle, converts the electromagnetic wave parameters into corresponding first scores, assigns first preset weights to the first scores respectively, and calculates the electromagnetic wave scores based on the first scores and the first preset weights; A human body score evaluation module: obtaining a plurality of self-evaluation parameters of the driver and passenger, converting the self-evaluation parameters into corresponding second scores, assigning second preset weights to the second scores respectively, and calculating the human body score based on the second scores and the second preset weights; Modeling and simulation module: establishing a car model including a driver and passengers, performing electromagnetic numerical simulation calculation on the model, obtaining a third score, assigning a third preset weight, and calculating a simulation score based on the third score and the third preset weight; Score summing module: assigning a fourth weight to the electromagnetic wave score, the human body score, and the simulation score respectively, summing them according to the weights, and obtaining a total score; Grade classification module: classify the automobile electromagnetic safety grade according to the total score.

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