CN104020371A - Automatic test method for radiation sensitivity - Google Patents
Automatic test method for radiation sensitivity Download PDFInfo
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Abstract
The invention discloses an automatic test method for radiation sensitivity. Based on automatic test for radiation sensitivity, a tested product and a product testing instrument interface image are acquired and analyzed through a first camera and a newly mounted second camera. According to the automatic test method, image processing technology is introduced into an electromagnetic compatibility testing field; in the radiation sensitivity testing process, video monitoring is performed on the tested product and a product testing instrument, and an image comparison method is adopted for automatically determining whether sensitive phenomenon of the tested product occurs. Because video monitoring is suitable for a plurality of tested products and product testing instruments, the automatic testing method has high universality. The automatic test method has advantages of: improving automatic degree in radiation sensitivity test, reducing labor intensity and simultaneously reducing uncertainty caused by human factors.
Description
Technical field
The present invention relates to electromagnetic compatibility test field, especially a kind of radiosensitivity automatic test approach.
Background technology
The Electro Magnetic Compatibility of electronics, electric product is the necessary condition of the market access, judge that whether the Electro Magnetic Compatibility of product is qualified, just need to carry out concrete electromagnetic compatibility test according to relevant criterion.Radiosensitivity test is the important component part of electromagnetic compatibility test, and object is to test under radio frequency electromagnetic field disturbs, the ability that is subject to trial product to avoid hydraulic performance decline, draw up and disturb.
In conventional at present radiosensitivity test, need artificial judgement to be subject to trial product whether to occur responsive phenomenon, testing crew will be absorbed in observation always and be subject to trial product or tested product test instrument in the process of the test that reaches a few hours, labour intensity is very large, also may leak the Frequency point that some occur responsive phenomenon.
Summary of the invention
For the deficiencies in the prior art, image processing techniques is incorporated into electromagnetic compatibility test field by the present invention, in radiosensitivity test process, to being subject to trial product and product test instrument to carry out video monitoring, adopt image ratio method automatic decision whether to occur responsive phenomenon, because video monitoring is applicable to multiple trial product and the product test instrument of being subject to, there is versatility, the automaticity of radiosensitivity test will be improved, reduce labour intensity, reduced the uncertainty that human factor is brought simultaneously.
The present invention adopts following technical scheme:
A kind of radiosensitivity automatic test approach, comprise radiosensitivity Auto-Test System, radiosensitivity Auto-Test System comprises darkroom, testing apparatus and main control computer, testing apparatus, by interfere with electromagnetic field analog machine and product test configuration of instrument, is placed with in darkroom and is subject to trial product, electric-field sensor and antenna; Interfere with electromagnetic field analog machine connects antenna, and electric-field sensor is connected on interfere with electromagnetic field analog machine; Product test instrument is connecting and is being subject to trial product, testing apparatus is connected on main control computer by cable, main control computer is connected with printer, in darkroom, be provided with the first camera that monitoring is subject to trial product, product test instrument is provided with second camera, and the first camera and second camera are connected on main control computer;
Radiosensitivity automatic test approach based on said system comprises the steps:
Step 1: the interface image image as a setting that is subject to trial product and product test instrument while normally work by the first camera and second camera collection;
Step 2: according to the requirement of radiosensitivity test, scan in test frequency range or stepping test;
Step 3: at test frequency, gather and be subject to trial product and product test instrument interface image;
Step 4: the background image that the image that step 3 is gathered and step 1 are obtained compares, judges whether to occur responsive phenomenon; If there is responsive phenomenon, carry out step 5, if there is not responsive phenomenon, repeating step 3, tests next point;
Step 5: suspend test, carry out troubleshooting processing; Fault is got rid of, and carry out step 6, and fault is got rid of unsuccessfully, finishes test;
Step 6: determine sensitive spot frequency and responsive threshold level;
Step 7: repeating step 3, test next point, until complete the test of whole frequency range.
In described step 1, respectively gather 3-24 width image by the first camera and second camera, deliver to main control computer, adopt difference image method, frame differential method or Gaussian Background modeling determine the image change region that noise causes and judge the threshold value whether image changes.
In described step 2, according to the test request of radiosensitivity, carry out system setting, calibration, main control computer starts interfere with electromagnetic field analog machine.
In described step 3, within each test frequency interfere with electromagnetic field stable period, gather and be no less than 3 width images for the image ratio of step 4.
The background image that the image in described step 4, step 3 being gathered and step 1 are obtained compares, comparative approach can adopt background subtraction point-score, the variation of movement images exceeds region and the threshold value of noise effect definite in step 1, on the software interface of main control computer, provide alerting signal, send alarm sound, prompting testing crew is subject to trial product to occur responsive phenomenon simultaneously.
In described step 6, first reduce interference field and force the thorough phenomenon of the responsive phenomenon of tested product to disappear, then progressively increase interference field strength until responsive phenomenon occurs again, the threshold level when recording responsive phenomenon and occurring and corresponding Frequency point; In this process, main control computer is subject to the monitoring image of trial product and product test instrument interface by the first camera and second camera collection, and judge the disappearance of responsive phenomenon and again occur according to image, there is the Frequency point of responsive phenomenon and corresponding threshold level in record automatically.
Useful technique effect of the present invention:
Radiosensitivity automatic test technology proposed by the invention, by adopting video monitoring to be subject to trial product and product test instrument, and adopt image comparison techniques to judge to be subject to trial product whether to occur responsive phenomenon, to have broken away from the restriction that is subject to trial product own characteristic, wide accommodation, has versatility.
Brief description of the drawings
Fig. 1 is radiosensitivity Auto-Test System composition schematic diagram.
Fig. 2 is the schematic flow sheet of radiosensitivity automatic test approach.
Embodiment
1 to 2 pair of the specific embodiment of the present invention is described further by reference to the accompanying drawings:
A kind of radiosensitivity automatic test approach, comprise Auto-Test System, Auto-Test System comprises darkroom 9, testing apparatus and main control computer 2, testing apparatus forms by disturbing electromagnetism to produce analog machine 4 and product test instrument 10, and 9 li, darkroom is placed with and is subject to trial product 6, electric-field sensor 7 and antenna 5; Interfere with electromagnetic field analog machine 4 connects antenna 5, and electric-field sensor 7 is connected on interfere with electromagnetic field equipment 4; Product test instrument 10 is connecting and is being subject to trial product 6, testing apparatus is connected on main control computer 2 by cable 3, main control computer 2 is connected with printer 1, in darkroom, be provided with the first camera 8 that monitoring is subject to trial product, product test instrument is provided with second camera 11, the first cameras 8 and second camera 11 is connected on main control computer 2.Interfere with electromagnetic field analog machine 4 produces interference field strength, after amplifying, is transferred on antenna, disturbs and is subject to trial product.Electric-field sensor 7 tests are fed back on main control computer 2 by interfere with electromagnetic field analog machine 4 by the field intensity size at trial product place.
Radiosensitivity automatic test approach based on said system comprises the steps:
Step 1: the interface image image as a setting that is subject to trial product and product test instrument while normally work by the first camera and second camera collection;
Respectively gather 3-24 width image by the first camera and second camera, deliver to main control computer, adopt difference image method, frame differential method or Gaussian Background modeling determine the image change region that noise causes and judge the threshold value whether image changes.Threshold size be subject to trial product, camera technical indicator and test environment relevant
Step 2: according to the requirement of radiosensitivity test, scan in test frequency range or stepping test;
According to the test request of radiosensitivity, carry out system setting, calibration, main control computer starts interfere with electromagnetic field analog machine.
Step 3: at test frequency, gather and be subject to trial product and product test instrument interface image;
Within test frequency interfere with electromagnetic field stable period, gather and be no less than 3 width images for the image ratio of step 4.
Step 4: the background image that the image that step 3 is gathered and step 1 are obtained compares, judges whether to occur responsive phenomenon; If there is responsive phenomenon, carry out step 5, if there is not responsive phenomenon, repeating step 3, tests next point;
The background image that the image that step 3 is gathered and step 1 are obtained compares, if change the region and the threshold value that exceed noise effect definite in step 1, on the software interface of main control computer, provide alerting signal, send alarm sound, prompting testing crew is subject to trial product to occur responsive phenomenon simultaneously.
Step 5: suspend test, carry out troubleshooting processing; Fault is got rid of, and carry out step 6, and fault is got rid of unsuccessfully, finishes test;
Step 6: determine sensitive spot frequency and responsive threshold level;
First reduce interference field and force the thorough phenomenon of the responsive phenomenon of tested product to disappear, then progressively increase interference field strength until responsive phenomenon occurs again, the threshold level when recording responsive phenomenon and occurring and corresponding Frequency point; In this process, main control computer is subject to the monitoring image of trial product and product test instrument interface by the first camera and second camera collection, and judge the disappearance of responsive phenomenon and again occur according to image, there is the Frequency point of responsive phenomenon and corresponding threshold level in record automatically.
Step 7: repeating step 3, test next point, until complete the test of whole frequency range.
Certainly; more than explanation is only preferred embodiment of the present invention; the present invention is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the guidance of this instructions; that makes is allly equal to alternative, obvious form of distortion, within all dropping on the essential scope of this instructions, ought to be subject to protection of the present invention.
Claims (6)
1. a radiosensitivity automatic test approach, comprise radiosensitivity Auto-Test System, radiosensitivity Auto-Test System comprises darkroom, testing apparatus and main control computer, testing apparatus, by interfere with electromagnetic field analog machine and product test configuration of instrument, is placed with in darkroom and is subject to trial product, electric-field sensor and antenna; Interfere with electromagnetic field analog machine connects antenna, and electric-field sensor is connected on interfere with electromagnetic field analog machine; Product test instrument is connecting and is being subject to trial product, testing apparatus is connected on main control computer by cable, main control computer is connected with printer, it is characterized in that, in darkroom, be provided with the first camera that monitoring is subject to trial product, product test instrument is provided with second camera, and the first camera and second camera are connected on main control computer;
Radiosensitivity automatic test approach based on said system comprises the steps:
Step 1: the interface image image as a setting that is subject to trial product and product test instrument while normally work by the first camera and second camera collection;
Step 2: according to the requirement of radiosensitivity test, scan in test frequency range or stepping test;
Step 3: at test frequency, gather and be subject to trial product and product test instrument interface image;
Step 4: the background image that the image that step 3 is gathered and step 1 are obtained compares, judges whether to occur responsive phenomenon; If there is responsive phenomenon, carry out step 5, if there is not responsive phenomenon, repeating step 3, tests next point;
Step 5: suspend test, carry out troubleshooting processing; Fault is got rid of, and carry out step 6, and fault is got rid of unsuccessfully, finishes test;
Step 6: determine sensitive spot frequency and responsive threshold level;
Step 7: repeating step 3, test next point, until complete the test of whole frequency range.
2. a kind of radiosensitivity automatic test approach according to claim 1, it is characterized in that, in described step 1, respectively gather 3-24 width image by the first camera and second camera, deliver to main control computer, adopt difference image method, frame differential method or Gaussian Background modeling determine the image change region that noise causes and judge the threshold value whether image changes.
3. a kind of radiosensitivity automatic test approach according to claim 1, is characterized in that, in described step 2, according to the test request of radiosensitivity, carries out system setting, calibration, and main control computer starts interfere with electromagnetic field analog machine.
4. a kind of radiosensitivity automatic test approach according to claim 2, is characterized in that, in described step 3, within each test frequency interfere with electromagnetic field stable period, gathers and is no less than 3 width images for the image ratio of step 4.
5. a kind of radiosensitivity automatic test approach according to claim 4, it is characterized in that, the background image that the image in described step 4, step 3 being gathered and step 1 are obtained compares, comparative approach can adopt background subtraction point-score, the variation of movement images exceeds region and the threshold value of noise effect definite in step 1, on the software interface of main control computer, provide alerting signal, send alarm sound simultaneously, prompting testing crew is subject to trial product to occur responsive phenomenon.
6. a kind of radiosensitivity automatic test approach according to claim 1, it is characterized in that, in described step 6, first reducing interference field forces the thorough phenomenon of the responsive phenomenon of tested product to disappear, then progressively increase interference field strength until responsive phenomenon occurs again, the threshold level when recording responsive phenomenon and occurring and corresponding Frequency point; In this process, main control computer is subject to the monitoring image of trial product and product test instrument interface by the first camera and second camera collection, and judge the disappearance of responsive phenomenon and again occur according to image, there is the Frequency point of responsive phenomenon and corresponding threshold level in record automatically.
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| CN107037283A (en) * | 2017-03-06 | 2017-08-11 | 中国人民解放军军械工程学院 | Radiosensitivity method of testing and device under the conditions of reverberation chamber |
| CN107192902A (en) * | 2017-05-19 | 2017-09-22 | 北京航空航天大学 | A kind of cable conducted susceptibility waving map method using many Gaussian pulses |
| CN107271811A (en) * | 2017-05-23 | 2017-10-20 | 北京汽车股份有限公司 | electromagnetic compatibility test system and method |
| CN109358247A (en) * | 2018-10-19 | 2019-02-19 | 中国人民解放军军事科学院国防工程研究院 | Electronic equipment electromagnetic environmental effects pilot system and test method under electromagnetic pulse Composite Field environment |
| CN109946638A (en) * | 2019-04-01 | 2019-06-28 | 山西省计量科学研究院 | Based on residence time is adaptive and the electric energy meter radiation immunity automatic detection device and method of flashlight glint identification |
| CN110542814A (en) * | 2019-09-05 | 2019-12-06 | 中国科学院长春光学精密机械与物理研究所 | system, method and device for testing electromagnetic sensitivity of imaging equipment |
| CN110555837A (en) * | 2019-09-05 | 2019-12-10 | 中国科学院长春光学精密机械与物理研究所 | Image quality interpretation method, device and system and image quick-viewing equipment |
| CN110749788A (en) * | 2019-10-10 | 2020-02-04 | 深圳创维－Rgb电子有限公司 | Monitoring method and device for electromagnetic sensitivity test and computer readable storage medium |
| CN110764490A (en) * | 2019-11-08 | 2020-02-07 | 中国舰船研究设计中心 | Forced stop sensitive device threshold value testing method for high-power microwave speedboat |
| CN111458589A (en) * | 2020-04-20 | 2020-07-28 | 西安中科长青医疗科技研究院有限公司 | Electromagnetic compatibility design verification method |
| CN113721087A (en) * | 2021-06-21 | 2021-11-30 | 一汽奔腾轿车有限公司 | Anti-interference test monitoring system and method for electromagnetic compatibility vehicle-mounted transmitter |
| CN114509629A (en) * | 2022-01-12 | 2022-05-17 | 北京航空航天大学 | Precision-adaptive cable conducted sensitivity time domain testing device and method |
| CN116735999A (en) * | 2023-05-12 | 2023-09-12 | 浙江科正电子信息产品检验有限公司 | Intelligent monitoring method for EMC test of vehicle-mounted domain control product |
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| CN107037283A (en) * | 2017-03-06 | 2017-08-11 | 中国人民解放军军械工程学院 | Radiosensitivity method of testing and device under the conditions of reverberation chamber |
| CN107037283B (en) * | 2017-03-06 | 2019-08-20 | 中国人民解放军军械工程学院 | Radiosensitivity test method and device under the conditions of reverberation chamber |
| CN107192902A (en) * | 2017-05-19 | 2017-09-22 | 北京航空航天大学 | A kind of cable conducted susceptibility waving map method using many Gaussian pulses |
| CN107192902B (en) * | 2017-05-19 | 2019-12-06 | 北京航空航天大学 | Cable conduction sensitivity time domain testing method using multiple Gaussian pulses |
| CN107271811B (en) * | 2017-05-23 | 2020-08-21 | 北京汽车股份有限公司 | Electromagnetic compatibility test system and method |
| CN107271811A (en) * | 2017-05-23 | 2017-10-20 | 北京汽车股份有限公司 | electromagnetic compatibility test system and method |
| CN109358247A (en) * | 2018-10-19 | 2019-02-19 | 中国人民解放军军事科学院国防工程研究院 | Electronic equipment electromagnetic environmental effects pilot system and test method under electromagnetic pulse Composite Field environment |
| CN109358247B (en) * | 2018-10-19 | 2021-01-12 | 中国人民解放军军事科学院国防工程研究院 | Method for testing electromagnetic environment effect of electronic equipment in electromagnetic pulse composite field environment |
| CN109946638A (en) * | 2019-04-01 | 2019-06-28 | 山西省计量科学研究院 | Based on residence time is adaptive and the electric energy meter radiation immunity automatic detection device and method of flashlight glint identification |
| CN109946638B (en) * | 2019-04-01 | 2021-01-08 | 山西省计量科学研究院 | Device and method for automatically detecting radiation immunity of electric energy meter based on residence time self-adaption and pulse lamp flicker identification |
| CN110555837A (en) * | 2019-09-05 | 2019-12-10 | 中国科学院长春光学精密机械与物理研究所 | Image quality interpretation method, device and system and image quick-viewing equipment |
| CN110542814A (en) * | 2019-09-05 | 2019-12-06 | 中国科学院长春光学精密机械与物理研究所 | system, method and device for testing electromagnetic sensitivity of imaging equipment |
| CN110749788A (en) * | 2019-10-10 | 2020-02-04 | 深圳创维－Rgb电子有限公司 | Monitoring method and device for electromagnetic sensitivity test and computer readable storage medium |
| CN110764490A (en) * | 2019-11-08 | 2020-02-07 | 中国舰船研究设计中心 | Forced stop sensitive device threshold value testing method for high-power microwave speedboat |
| CN111458589A (en) * | 2020-04-20 | 2020-07-28 | 西安中科长青医疗科技研究院有限公司 | Electromagnetic compatibility design verification method |
| CN113721087A (en) * | 2021-06-21 | 2021-11-30 | 一汽奔腾轿车有限公司 | Anti-interference test monitoring system and method for electromagnetic compatibility vehicle-mounted transmitter |
| CN114509629A (en) * | 2022-01-12 | 2022-05-17 | 北京航空航天大学 | Precision-adaptive cable conducted sensitivity time domain testing device and method |
| CN116735999A (en) * | 2023-05-12 | 2023-09-12 | 浙江科正电子信息产品检验有限公司 | Intelligent monitoring method for EMC test of vehicle-mounted domain control product |
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Address after: 266555 Xiangjiang 98, Huangdao District, Qingdao City, Shandong Province Patentee after: CLP kesiyi Technology Co.,Ltd. Address before: 266555 Xiangjiang 98, Huangdao District, Qingdao City, Shandong Province Patentee before: CHINA ELECTRONIC TECHNOLOGY INSTRUMENTS Co.,Ltd. |