CN111913071A - Method for evaluating electromagnetic compatibility of whole fuel vehicle - Google Patents
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Abstract
A method for evaluating electromagnetic compatibility of a whole fuel vehicle comprises the following steps: the whole car electromagnetic compatibility of fuel car tests in all projects, includes: the conventional item test including the regulation bulletin item test and the national recommended standard test, and the new technology pre-research test as the added item test; establishing a conventional item evaluation index system of electromagnetic compatibility of the whole fuel vehicle; obtaining the integral vehicle electromagnetic compatibility evaluation comprehensive score of the fuel vehicle, which comprises the score of the conventional item test, the integral vehicle electromagnetic compatibility evaluation comprehensive score and the score of the new technology pre-research test, wherein the integral vehicle electromagnetic compatibility evaluation comprehensive score is obtained by carrying out weighted calculation on the score of the conventional item test; and (4) performing the evaluation star-grade evaluation on the electromagnetic compatibility of the whole fuel vehicle according to the magnitude of the electromagnetic compatibility evaluation comprehensive score of the whole fuel vehicle. According to the invention, the quality of the EMC performance of the whole fuel vehicle is objectively reflected by carrying out the EMC performance test evaluation on the fuel vehicle, so that an important reference is provided for the EMC performance development of the vehicle, and the electromagnetic compatibility of the whole fuel vehicle is continuously improved.
Description
Technical Field
The invention belongs to the technical field of electromagnetic compatibility testing of fuel vehicles, and particularly relates to a method for evaluating electromagnetic compatibility of a whole fuel vehicle.
Background
The electromagnetic compatibility (EMC) performance of the whole automobile is a very important automobile performance. Along with the fuel oil and intelligent networking development of automobiles, the problem of electromagnetic compatibility of the whole automobile is more and more emphasized. According to the traditional EMC classification mode, the electromagnetic compatibility test of the whole vehicle is divided into an electromagnetic disturbance EMI test and an electromagnetic immunity EMS test, and each test comprises a plurality of test items.
In the prior art, the electromagnetic compatibility test of the whole fuel vehicle is carried out according to relevant standards, the evaluation modes are single test and single evaluation, the electromagnetic compatibility comprehensive performance of the whole vehicle cannot be judged, the EMC comprehensive performance of the whole fuel vehicle cannot be transversely compared, and a standard electromagnetic compatibility evaluation system of the whole fuel vehicle is lacked.
Disclosure of Invention
Aiming at the defects in the prior art, the invention discloses a method for evaluating the electromagnetic compatibility of the whole fuel vehicle. The technical scheme of the invention is as follows by combining the attached drawings of the specification:
a method for evaluating electromagnetic compatibility of a whole fuel vehicle comprises the following steps: the method comprises the following steps of obtaining corresponding test scores through a whole-vehicle electromagnetic compatibility test of the fuel vehicle, establishing a whole-vehicle electromagnetic compatibility evaluation index system of the fuel vehicle, obtaining a whole-vehicle electromagnetic compatibility evaluation comprehensive score of the fuel vehicle and star-grade evaluation of the whole-vehicle electromagnetic compatibility of the fuel vehicle;
the whole-project test of the electromagnetic compatibility performance of the fuel vehicle comprises the following steps: the conventional item test including the regulation bulletin item test and the national recommended standard test, and the new technology pre-research test as the added item test;
the conventional item evaluation index system content of electromagnetic compatibility of the whole fuel vehicle comprises the following steps: the standard category corresponding to the conventional item test, the name of the conventional item test project and the performance index weight of the conventional item;
obtaining the electromagnetic compatibility evaluation comprehensive score of the whole fuel vehicle is as follows: based on the fuel vehicle whole electromagnetic compatibility conventional item evaluation index system, carrying out weighted calculation on the scores of the conventional item tests to obtain a whole vehicle electromagnetic compatibility conventional item evaluation comprehensive score, and adding the whole vehicle electromagnetic compatibility conventional item evaluation comprehensive score and the scores of the new technology pre-research tests for summation to obtain a fuel vehicle whole electromagnetic compatibility evaluation comprehensive score;
the star-level evaluation of the electromagnetic compatibility of the whole fuel vehicle is as follows: and (4) performing the evaluation star-grade evaluation on the electromagnetic compatibility of the whole fuel vehicle according to the magnitude of the electromagnetic compatibility evaluation comprehensive score of the whole fuel vehicle.
Further, in the full-project test of the electromagnetic compatibility of the whole fuel vehicle, the correspondence between each conventional test project and the corresponding reference standard and the corresponding project type is shown in the following table one:
watch 1
The conventional tests score the test results according to the corresponding reference standards so as to respectively obtain the scores of the conventional tests.
Further, performing according to corporate standards, industry standards, or design development requirements includes: the method comprises the steps of carrying out preliminary study tests on new technologies including an intelligent functional vehicle anti-interference test, a networking functional vehicle anti-interference test, an OTA test and a complex electromagnetic environment adaptability test, wherein 2 minutes is added to each preliminary study test on the electromagnetic compatibility of the whole fuel vehicle, the total number of the preliminary study tests is 2n, and 2n is less than or equal to 10.
Further, the conventional evaluation index system for the electromagnetic compatibility of the whole fuel vehicle comprises the following components: the standard category, the test project name and the performance index weight are specifically shown in the eleventh table:
watch eleven
Further, the specific process of performing weighted calculation on the scores of the conventional item test is as follows:
the weighted calculation formula is:
S’＝S1×36％+S2×24％+S3×10％+S4×5％+S5×10％+S6×5％+S7×5％+S8×5％；
wherein:
s1 is the score of the vehicle radiation emission-protective vehicle outer receiver test;
s2 is the score of the complete vehicle radiation immunity test;
s3 is the vehicle radiation emission-protection vehicle-mounted receiver test score;
s4 is the score of human body electromagnetic protection test;
s5 is the whole vehicle radiation immunity-external radiation source method test score;
s6 is the test score of the whole vehicle radiation immunity-vehicle-mounted transmitter simulation method;
s7 is a radiation immunity-large current injection method test score;
s8 is the score of the electrostatic discharge test of the whole vehicle;
the fuel vehicle whole electromagnetic compatibility evaluation comprehensive score calculation formula is as follows:
S＝S’+S9
wherein:
s is the comprehensive score of the electromagnetic compatibility evaluation of the whole fuel vehicle;
s' is the comprehensive score of the conventional item evaluation of the electromagnetic compatibility of the whole vehicle;
s9 is the score of the new technology pre-research test.
Further, according to the magnitude of the electromagnetic compatibility evaluation comprehensive score of the whole fuel vehicle, the electromagnetic compatibility evaluation star rating of the whole fuel vehicle is evaluated, and the evaluation result comprises the following steps: five stars, four stars, three stars, two stars, one star, and no star; wherein, the five-star grade is the highest grade of the electromagnetic compatibility performance of the whole vehicle, and the star-free grade is the lowest grade of the performance.
Furthermore, the evaluation star-level evaluation standard for the electromagnetic compatibility of the whole fuel vehicle is detailed in the following twelve tables:
watch twelve
| Evaluation composite score | Star grade |
| S≥90 | Five stars |
| 85≤S＜90 | Four stars |
| 80≤S＜85 | Three stars |
| 70≤S＜80 | Two stars |
| 60≤S＜70 | One star |
| S＜60 | Without star |
。
Compared with the prior art, the invention has the beneficial effects that:
1. the method for evaluating the electromagnetic compatibility of the whole fuel vehicle can objectively reflect the advantages and disadvantages of the electromagnetic compatibility of the whole fuel vehicle.
2. The method for evaluating the electromagnetic compatibility of the whole fuel vehicle is based on a new technology pre-research test of taking a rule/notice as a main part, taking a recommendation standard as an auxiliary part, considering intelligent internet connection and the like, forms an EMC performance evaluation system of the whole fuel vehicle, and ensures the comprehensiveness and effectiveness of an evaluation result.
3. The method for evaluating the electromagnetic compatibility of the whole fuel vehicle realizes single-item evaluation and comprehensive performance grading evaluation of the electromagnetic compatibility of the whole fuel vehicle.
Drawings
Fig. 1 is a flow chart of a method for evaluating electromagnetic compatibility of a whole fuel vehicle according to a specific embodiment of the invention.
Detailed Description
For clearly and completely describing the technical scheme and the specific working process thereof, the specific implementation mode of the invention is as follows by combining the attached drawings of the specification:
the invention discloses a method for evaluating electromagnetic compatibility of a whole fuel vehicle, which comprises the following steps: the method comprises the steps of obtaining corresponding test scores through all-item test of the electromagnetic compatibility of the whole fuel vehicle, establishing a whole fuel vehicle electromagnetic compatibility evaluation index system, obtaining a whole fuel vehicle electromagnetic compatibility evaluation comprehensive score, and performing star evaluation on the electromagnetic compatibility of the whole fuel vehicle.
The method for evaluating the electromagnetic compatibility of the whole fuel vehicle comprises the following specific processes:
firstly, the method comprises the following steps: the electromagnetic compatibility of the whole fuel vehicle is tested in all items to obtain corresponding test scores;
the electromagnetic compatibility test items of the whole fuel vehicle are objective test items, and the objective test items comprise: a regulation bulletin item test, a national recommendation standard test and a new technology pre-research test;
the rule bulletin item test and the national recommendation standard test are conventional test items, and the new technology pre-research test is an additional score test item;
the statutory announcement item test includes: the whole vehicle radiation emission-protection vehicle external receiver test and the whole vehicle radiation interference resistance test are carried out;
the national recommended standard test comprises: the method comprises the following steps of protecting a vehicle-mounted receiver test, a human body electromagnetic protection test, a whole vehicle radiation immunity-vehicle exterior radiation source method test, a whole vehicle radiation immunity-vehicle interior transmitter simulation method test, a whole vehicle radiation immunity-large current injection method test and a whole vehicle electrostatic discharge test;
the new technology pre-research test comprises the following steps: intelligent networking automobile anti-interference test, OTA (Over The Air test, focusing on The radiation performance of The whole machine) test, complex electromagnetic environment adaptability test and other new technology tests
The corresponding reference standards of the electromagnetic compatibility test items of the whole fuel vehicle are detailed in the following table I:
watch 1
As shown in the first table above:
1. the test process of the whole vehicle radiation emission-protection vehicle external receiver is as follows:
and carrying out a whole vehicle radiation emission-protective vehicle exterior receiver test according to the regulation standards GB 34660 and GB 14023, and measuring whether the results of the vehicle broadband emission and narrow-band emission at the frequency range of 30MHz-1000MHz meet the standard requirements. And (4) scoring based on a zeta principle of the minimum margin value of the test result, wherein the scoring rule is shown in the following table two:
watch two
2. The whole vehicle radiation immunity test process is as follows:
and carrying out a whole vehicle radiation interference resistance test according to the regulation standard GB 34660, and verifying the radiation interference resistance capability of the vehicle at the frequency band of 20MHz-2 GHz. And scoring based on the vehicle function state in the test process, wherein the scoring rule is shown in the following table III:
watch III
3. The test process of the whole vehicle radiation emission-protection vehicle-mounted receiver is as follows:
and performing a radio disturbance test of the protective vehicle-mounted receiver according to GB/T18655 or CISPR 25, and measuring whether the transmission result of the protective vehicle-mounted receiver of the vehicle in the frequency band of 150kHz-2.5GHz meets the standard requirement. And scoring based on the zeta principle of the minimum margin value of the test result, wherein the scoring rule is shown in the following four tables:
watch four
In addition, in the test process of the whole vehicle radiation emission-protection vehicle-mounted receiver, the warm air, double flash and front wiper modes are evaluated according to the standard GB/T18655-.
4. The human body electromagnetic protection test process specifically comprises the following steps:
and (4) carrying out a human body electromagnetic protection test according to the standard GB/T37130, and measuring whether the electromagnetic radiation energy values of the positions of the vehicle seat, the foot space, the charging port and the like meet the standard requirements. Scoring is carried out based on the Zeta principle of the weighted minimum margin value of the test results of all the test points, and the scoring rule is shown in the following table V:
watch five
5. The whole vehicle radiation immunity-external radiation source method test process is as follows:
and (3) carrying out the test of the complete vehicle radiation immunity-external radiation source method according to GB/T33012.2, and measuring the anti-interference capability of the vehicle in the radiation immunity free field method of the frequency band of 0.01MHz-18GHz (or the frequency band required by development and design). Grading based on the radiation immunity field intensity level and the vehicle function state in the test process, wherein the grading rule is shown in the following table five:
watch six
6. The test process of the whole vehicle radiation immunity-vehicle-mounted transmitter simulation method is as follows:
and (3) carrying out the complete vehicle radiation immunity-vehicle-mounted transmitter simulation method immunity test according to the standard GB/T33012.3, and measuring the vehicle-mounted transmitter simulation method immunity in the frequency band of 1.8MHz-18GHz (or the frequency band required by development and design). And scoring based on the vehicle function state in the test process, wherein the scoring rule is shown as the following seven:
watch seven
7. The test process of the whole vehicle radiation immunity-heavy current injection method is as follows:
and carrying out the complete vehicle radiation immunity-large current injection immunity test according to the standard GB/T33012.4, and measuring the large current injection immunity of the vehicle at the frequency range of 1MHz-400 MHz. And scoring based on the injection current grade and the vehicle function state in the test process, wherein the scoring rule is shown in the following table eight:
table eight
8. The whole vehicle electrostatic discharge test process specifically comprises the following steps:
and (4) carrying out the electrostatic discharge immunity test of the whole vehicle according to the standard GB/T19951, and testing the electrostatic discharge immunity of the vehicle. And evaluating based on the vehicle function state in the test process, wherein the scoring rule is shown as the following table nine:
watch nine
9. The new technology pre-research test process is as follows:
performing a new technology pre-research test according to a group standard, an industry standard or a design development requirement, wherein the new technology pre-research test comprises the following steps: the method comprises the steps of intelligent function vehicle anti-interference testing, networking function vehicle anti-interference testing, OTA testing, complex electromagnetic environment adaptability testing and the like, and whether the anti-interference capability of a measuring vehicle meets the standard or the design requirement or not is measured. The new technology test item is a point adding item, each time the EMC new technology of the whole vehicle is tested in advance, 2 points are added, the total point is 2n, the upper limit is 10 points, and the 2n is less than or equal to 10. Scoring based on whether the test results meet the standard requirements, the scoring rules are as shown in the following table:
watch ten
According to the electromagnetic compatibility test items of the whole fuel vehicle, corresponding test item scores are respectively obtained:
the whole vehicle radiation emission-protective vehicle external receiver test score S1;
the finished vehicle radiation immunity test score is S2;
the whole vehicle radiation emission-protection vehicle-mounted receiver test score S3;
human body electromagnetic protection test score S4;
the whole vehicle radiation immunity-external radiation source method tests the score S5;
the whole vehicle radiation immunity-vehicle-mounted transmitter simulation method tests the score S6;
the radiation immunity-large current injection method test score S7;
the finished vehicle electrostatic discharge test score is S8;
the new technique pre-develops a test score S9.
Secondly, establishing a conventional evaluation index system for electromagnetic compatibility of the whole fuel vehicle
The conventional evaluation index system for the electromagnetic compatibility of the whole fuel vehicle comprises the following components: the standard category, the test project name and the performance index weight are specifically shown in the eleventh table:
watch eleven
Thirdly, obtaining the integrated score of the electromagnetic compatibility evaluation of the whole fuel vehicle
The process for obtaining the whole fuel vehicle electromagnetic compatibility evaluation comprehensive score specifically comprises the following steps:
1. the fuel vehicle electromagnetic compatibility conventional item evaluation index system evaluates the fuel vehicle electromagnetic compatibility conventional item, the fuel vehicle electromagnetic compatibility conventional item evaluation comprehensive score is the weighted sum of the evaluation item scores of the conventional items, and the weighted score formula is as follows:
in the above weighted score formula:
s' is the comprehensive score of the conventional item evaluation of the electromagnetic compatibility of the whole vehicle;
ai is the weight of each evaluation item, Si is the score of each evaluation item, namely:
S’＝S1×36％+S2×24％+S3×10％+S4×5％+S5×10％+S6×5％+S7×5％+S8×5％；
2. the 'integral electromagnetic compatibility general item evaluation comprehensive score' and the 'new technology pre-research test score' which is the most added score are added and summed, namely the integral electromagnetic compatibility evaluation comprehensive score of the whole fuel vehicle, namely:
S＝S’+S9
s is the comprehensive score of the electromagnetic compatibility evaluation of the whole fuel vehicle;
s' is the comprehensive score of the conventional item evaluation of the electromagnetic compatibility of the whole vehicle;
s9 is the score of the new technology pre-research test.
Four, star-grade evaluation of electromagnetic compatibility of whole fuel vehicle
According to the magnitude of the electromagnetic compatibility evaluation comprehensive score S of the whole fuel vehicle, the electromagnetic compatibility evaluation star level evaluation of the whole fuel vehicle is carried out, and the evaluation result comprises the following steps: five stars, four stars, three stars, two stars, one star, and no star; wherein, the five-star grade is the highest grade of the electromagnetic compatibility performance of the whole vehicle, and the star-free grade is the lowest grade of the performance.
The evaluation star-level evaluation standard for the electromagnetic compatibility of the whole fuel vehicle is detailed in the table sixteen below:
watch twelve
| Total score | Star grade |
| S≥90 | Five stars (four star) |
| 85≤S＜90 | Four stars (all star) |
| 80≤S＜85 | Three stars (all star) |
| 70≤S＜80 | Two stars (four star) |
| 60≤S＜70 | One star (four) |
| S＜60 | Star-free stage |
The star grade of the electromagnetic compatibility of the whole fuel vehicle is obtained by the evaluation method, the quality of the electromagnetic compatibility comprehensive performance of the whole vehicle can be judged by comparing the star grade of the electromagnetic compatibility of the whole fuel vehicle, and the EMC comprehensive performance of the whole fuel vehicle is transversely compared.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A method for evaluating electromagnetic compatibility of a whole fuel vehicle is characterized by comprising the following steps:
the evaluation method comprises the following steps: the method comprises the following steps of obtaining corresponding test scores through a whole-vehicle electromagnetic compatibility test of the fuel vehicle, establishing a whole-vehicle electromagnetic compatibility evaluation index system of the fuel vehicle, obtaining a whole-vehicle electromagnetic compatibility evaluation comprehensive score of the fuel vehicle and star-grade evaluation of the whole-vehicle electromagnetic compatibility of the fuel vehicle;
the whole-project test of the electromagnetic compatibility performance of the fuel vehicle comprises the following steps: the conventional item test including the regulation bulletin item test and the national recommended standard test, and the new technology pre-research test as the added item test;
the conventional item evaluation index system content of electromagnetic compatibility of the whole fuel vehicle comprises the following steps: the standard category corresponding to the conventional item test, the name of the conventional item test project and the performance index weight of the conventional item;
obtaining the electromagnetic compatibility evaluation comprehensive score of the whole fuel vehicle is as follows: based on the fuel vehicle whole electromagnetic compatibility conventional item evaluation index system, carrying out weighted calculation on the scores of the conventional item tests to obtain a whole vehicle electromagnetic compatibility conventional item evaluation comprehensive score, and adding the whole vehicle electromagnetic compatibility conventional item evaluation comprehensive score and the scores of the new technology pre-research tests for summation to obtain a fuel vehicle whole electromagnetic compatibility evaluation comprehensive score;
the star-level evaluation of the electromagnetic compatibility of the whole fuel vehicle is as follows: and (4) performing the evaluation star-grade evaluation on the electromagnetic compatibility of the whole fuel vehicle according to the magnitude of the electromagnetic compatibility evaluation comprehensive score of the whole fuel vehicle.
2. The method for evaluating the electromagnetic compatibility of the whole fuel vehicle as claimed in claim 1, is characterized in that:
in the full-project test of the electromagnetic compatibility of the whole fuel vehicle, the correspondence between each conventional test project and the corresponding reference standard and the corresponding project type is shown as the following table I:
watch 1
The conventional tests score the test results according to the corresponding reference standards so as to respectively obtain the scores of the conventional tests.
3. The method for evaluating the electromagnetic compatibility of the whole fuel vehicle as claimed in claim 1, is characterized in that:
according to the group standard, the industry standard or the design development requirement, the method comprises the following steps: the method comprises the steps of carrying out preliminary study tests on new technologies including an intelligent functional vehicle anti-interference test, a networking functional vehicle anti-interference test, an OTA test and a complex electromagnetic environment adaptability test, wherein 2 minutes is added to each preliminary study test on the electromagnetic compatibility of the whole fuel vehicle, the total number of the preliminary study tests is 2n, and 2n is less than or equal to 10.
4. The method for evaluating the electromagnetic compatibility of the whole fuel vehicle as claimed in claim 1, is characterized in that:
the conventional evaluation index system for the electromagnetic compatibility of the whole fuel vehicle comprises the following components: the standard category, the test project name and the performance index weight are specifically shown in the eleventh table:
watch eleven
5. The method for evaluating the electromagnetic compatibility of the whole fuel vehicle as claimed in claim 4, wherein the method comprises the following steps:
the specific process of performing weighted calculation on the scores of the conventional item test is as follows:
the weighted calculation formula is:
S’＝S1×36％+S2×24％+S3×10％+S4×5％+S5×10％+S6×5％+S7×5％+S8×5％；
wherein:
s1 is the score of the vehicle radiation emission-protective vehicle outer receiver test;
s2 is the score of the complete vehicle radiation immunity test;
s3 is the vehicle radiation emission-protection vehicle-mounted receiver test score;
s4 is the score of human body electromagnetic protection test;
s5 is the whole vehicle radiation immunity-external radiation source method test score;
s6 is the test score of the whole vehicle radiation immunity-vehicle-mounted transmitter simulation method;
s7 is a radiation immunity-large current injection method test score;
s8 is the score of the electrostatic discharge test of the whole vehicle;
the fuel vehicle whole electromagnetic compatibility evaluation comprehensive score calculation formula is as follows:
S＝S’+S9
wherein:
s is the comprehensive score of the electromagnetic compatibility evaluation of the whole fuel vehicle;
s' is the comprehensive score of the conventional item evaluation of the electromagnetic compatibility of the whole vehicle;
s9 is the score of the new technology pre-research test.
6. The method for evaluating the electromagnetic compatibility of the whole fuel vehicle as claimed in claim 5, wherein the method comprises the following steps:
according to the electromagnetic compatibility evaluation comprehensive score of the whole fuel vehicle, the electromagnetic compatibility evaluation star rating of the whole fuel vehicle is evaluated, and the evaluation result comprises the following steps: five stars, four stars, three stars, two stars, one star, and no star; wherein, the five-star grade is the highest grade of the electromagnetic compatibility performance of the whole vehicle, and the star-free grade is the lowest grade of the performance.
7. The method for evaluating the electromagnetic compatibility of the whole fuel vehicle as claimed in claim 6, wherein the method comprises the following steps:
the evaluation star-level evaluation standard for the electromagnetic compatibility of the whole fuel vehicle is detailed in the following twelve steps:
watch twelve
。
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| CN112881830A (en) * | 2021-01-15 | 2021-06-01 | 中汽研汽车检验中心（天津）有限公司 | Electromagnetic compatibility test method of vehicle-mounted terminal |
| CN112986732A (en) * | 2021-02-08 | 2021-06-18 | 吉林大学青岛汽车研究院 | Method and device for calculating electromagnetic radiation of whole vehicle to human body and storage medium |
| CN113049900A (en) * | 2021-03-23 | 2021-06-29 | 北京航空航天大学 | Airborne equipment electromagnetic compatibility grading method based on uncertain measure theory |
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