CN104020371B - Automatic test method for radiation sensitivity - Google Patents
Automatic test method for radiation sensitivity Download PDFInfo
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- CN104020371B CN104020371B CN201410223384.3A CN201410223384A CN104020371B CN 104020371 B CN104020371 B CN 104020371B CN 201410223384 A CN201410223384 A CN 201410223384A CN 104020371 B CN104020371 B CN 104020371B
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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
Electronics, the Electro Magnetic Compatibility of electric product are the essential conditions of the market access, the Electro Magnetic Compatibility of product to be judged
Whether qualified it is necessary to carry out specific electromagnetic compatibility test according to relevant criterion.Radiosensitivity test is that electromagnetic compatibility is surveyed
It is therefore an objective to test is under radio frequency electromagnetic field interference, tested products avoid hydraulic performance decline, interference of drawing up to the important component part of examination
Ability.
In radiosensitivity test conventional at present, need artificially to judge whether tested products sensitivity phenomenon, examination
Test personnel and will be absorbed in observation tested products or tested products test instrunment, work in the process of the test of a few hours always
Intensity very big it is also possible to leak through the Frequency point that some sensitivity phenomenon.
Content of the invention
For the deficiencies in the prior art, image processing techniquess are incorporated into electromagnetic compatibility test field by the present invention, in radiation
During susceptibility test, video monitoring is carried out to tested products and product test instrument, the method comparing using image is automatic
Judge whether that sensitivity phenomenon occurs, because video monitoring is applicable to multiple tested products and product test instrument, have general
Property, the automaticity of radiosensitivity test will be improved, reduce labor intensity, decrease anthropic factor simultaneously and bring not
Definitiveness.
The present invention adopts the following technical scheme that
A kind of radiosensitivity automatic test approach, including radiosensitivity Auto-Test System, radiosensitivity is automatic
Test system includes darkroom, test equipment and main control computer, and test equipment is surveyed by disturbing electromagnetic field simulator and product
Test instrument forms, and is placed with tested products, electric-field sensor and antenna in darkroom；Interference electromagnetic field simulator connects antenna,
Electric-field sensor is connected on interference electromagnetic field simulator；Product test instrument is connected to tested products, and test equipment is passed through
On main control computer, main control computer is connected with printer to cable connection, and be provided with monitoring tested products in darkroom first is taken the photograph
As head, product test instrument is provided with second camera, and the first photographic head and second camera are connected to main control computer
On；
Comprised the steps: based on the radiosensitivity automatic test approach of said system
Step 1: tested products and product test instrument when normal work is gathered by the first photographic head and second camera
Interface image as background image；
Step 2: according to the requirement of radiosensitivity test, be scanned in test frequency range or stepping test；
Step 3: in test frequency, collection tested products and product test instrument interface image；
Step 4: step 3 image gathering and the background image that step 1 obtains are compared, judge whether that sensitivity occurs
Phenomenon；If there is sensitivity phenomenon, carry out step 5, without sensitivity phenomenon, repeat step 3 occur, test next point；
Step 5: suspend test, carry out troubleshooting process；Failture evacuation, carries out step 6, failture evacuation failure, terminates test；
Step 6: determine sensitive dot frequency and sensitive threshold level；
Step 7: repeat step 3, the next point of test, until completing the test of whole frequency range.
Pass through the first photographic head in described step 1 and second camera respectively gather 3-24 width image, deliver to main control computer,
The image change region and judgement figure that noise causes is determined using difference image method, frame differential method or Gaussian Background modeling
It seem the threshold value of no change.
According to the test request of radiosensitivity in described step 2, carry out system setting, calibration, main control computer starts
Interference electromagnetic field simulator.
In described step 3 within each test frequency interference electromagnetic field stable period, collection is used for walking no less than 3 width images
Image in rapid 4 compares.
In described step 4, step 3 image gathering and the background image that step 1 obtains are compared, comparative approach can
Using background subtraction, the change of movement images exceeds the region of influence of noise determining in step 1 and threshold value, calculates in master control
Provide alarm signal on the software interface of machine, be simultaneously emitted by alarm sound, point out testing crew tested products that sensitivity phenomenon occurs.
First reducing interference field in described step 6 forces the thorough phenomenon of tested products sensitivity phenomenon to disappear, and then incrementally increases
Interference field strength occurs again until sensitivity phenomenon, records threshold level when sensitivity phenomenon occurs and corresponding Frequency point；Here
During, main control computer passes through the first photographic head and second camera gathers the prison of tested products and product test instrument interface
Control image, and judges the disappearance of sensitivity phenomenon according to image and occurs again, automatically record occur the Frequency point of sensitivity phenomenon with
Corresponding threshold level.
The Advantageous Effects of the present invention:
Radiosensitivity automatic test technology proposed by the invention, by being surveyed using video monitoring tested products and product
Test instrument, and to judge whether tested products sensitivity phenomenon using image comparison techniques, break away from tested products itself special
The restriction of point, wide accommodation, there is versatility.
Brief description
Fig. 1 is radiosensitivity Auto-Test System composition schematic diagram.
Fig. 2 is the schematic flow sheet of radiosensitivity automatic test approach.
Specific embodiment
Specific embodiment in conjunction with 1 to 2 couple of present invention of accompanying drawing is described further:
A kind of radiosensitivity automatic test approach, including Auto-Test System, Auto-Test System includes darkroom 9, surveys
Examination equipment and main control computer 2, test equipment is formed by disturbing electromagnetism to produce simulator 4 and product test instrument 10, darkroom 9
In be placed with tested products 6, electric-field sensor 7 and antenna 5；Interference electromagnetic field simulator 4 connects antenna 5, electric-field sensor
7 are connected on interference electromagnetism field device 4；Product test instrument 10 is connected to tested products 6, and test equipment is connected by cable 3
On main control computer 2, main control computer 2 is connected with printer 1, is provided with the first photographic head 8 of monitoring tested products in darkroom,
Product test instrument is provided with second camera 11, and the first photographic head 8 and second camera 11 are connected to main control computer
On 2.Interference electromagnetic field simulator 4 produce interference field strength, amplified be transferred on antenna, disturb tested products.Electric field passes
The field intensity size that sensor 7 is tested at tested products is passed through to disturb electromagnetic field simulator 4 to feed back on main control computer 2.
Comprised the steps: based on the radiosensitivity automatic test approach of said system
Step 1: tested products and product test instrument when normal work is gathered by the first photographic head and second camera
Interface image as background image；
3-24 width image is respectively gathered by the first photographic head and second camera, delivers to main control computer, using difference image
Method, frame differential method or Gaussian Background modeling are determining image change region that noise causes and to judge whether image changes
Threshold value.Threshold size is relevant with tested products, photographic head technical specification and test environment
Step 2: according to the requirement of radiosensitivity test, be scanned in test frequency range or stepping test；
According to the test request of radiosensitivity, carry out system setting, calibration, main control computer starts interference electromagnetic field mode
Propose standby.
Step 3: in test frequency, collection tested products and product test instrument interface image；
Within test frequency interference electromagnetic field stable period, collection is used for the image ratio in step 4 no less than 3 width images
Relatively.
Step 4: step 3 image gathering and the background image that step 1 obtains are compared, judge whether that sensitivity occurs
Phenomenon；If there is sensitivity phenomenon, carry out step 5, without sensitivity phenomenon, repeat step 3 occur, test next point；
Step 3 image gathering and the background image that step 1 obtains are compared, if change is beyond true in step 1
The region of fixed influence of noise and threshold value, provide alarm signal on the software interface of main control computer, are simultaneously emitted by chimes of doom
Sound, points out testing crew tested products sensitivity phenomenon.
Step 5: suspend test, carry out troubleshooting process；Failture evacuation, carries out step 6, failture evacuation failure, terminates test；
Step 6: determine sensitive dot frequency and sensitive threshold level；
First reduce interference field force the thorough phenomenon of tested products sensitivity phenomenon disappear, then incrementally increase interference field strength until
Sensitivity phenomenon occurs again, records threshold level when sensitivity phenomenon occurs and corresponding Frequency point；In the process, master control meter
Calculation machine passes through the first photographic head and second camera gathers the monitoring image of tested products and product test instrument interface, and according to
Image judges the disappearance of sensitivity phenomenon and occurs again, and Frequency point and the corresponding thresholding electricity of sensitivity phenomenon in record automatically
Flat.
Step 7: repeat step 3, the next point of test, until completing the test of whole frequency range.
Certainly, only presently preferred embodiments of the present invention described above, the present invention is not limited to enumerate above-described embodiment, should
When explanation, any those of ordinary skill in the art are under the guidance of this specification, all equivalent substitutes of being made, bright
Aobvious variant, all falls within the essential scope of this specification, ought to be protected by the present invention.
Claims (6)
1. a kind of radiosensitivity automatic test approach, including radiosensitivity Auto-Test System, radiosensitivity is surveyed automatically
Test system includes darkroom, test equipment and main control computer, and test equipment is by disturbing electromagnetic field simulator and product test
Instrument forms, and is placed with tested products, electric-field sensor and antenna in darkroom；Interference electromagnetic field simulator connects antenna, electricity
Field sensor is connected on interference electromagnetic field simulator；Product test instrument is connected to tested products, and test equipment passes through electricity
Cable is connected on main control computer, and main control computer is connected with printer it is characterised in that being provided with monitoring tested products in darkroom
The first photographic head, product test instrument is provided with second camera, and the first photographic head and second camera are connected to master
On control computer；
Comprised the steps: based on the radiosensitivity automatic test approach of said system
Step 1: the circle of tested products and product test instrument when normal work is gathered by the first photographic head and second camera
Face image is as background image；
Step 2: according to the requirement of radiosensitivity test, be scanned in test frequency range or stepping test；
Step 3: in test frequency, collection tested products and product test instrument interface image；
Step 4: step 3 image gathering and the background image that step 1 obtains are compared, judge whether sensitivity occurs now
As；If there is sensitivity phenomenon, carry out step 5, without sensitivity phenomenon, repeat step 3 occur, test next point；
Step 5: suspend test, carry out troubleshooting process；Failture evacuation, carries out step 6, failture evacuation failure, terminates test；
Step 6: determine sensitive dot frequency and sensitive threshold level；
Step 7: repeat step 3, the next point of test, until completing the test of whole frequency range.
2. a kind of radiosensitivity automatic test approach according to claim 1 is it is characterised in that lead in described step 1
Cross the first photographic head and second camera respectively gathers 3-24 width image, deliver to main control computer, using difference image method, inter-frame difference
Method or Gaussian Background modeling are determining image change region that noise causes and to judge the threshold value whether image changes.
3. a kind of radiosensitivity automatic test approach according to claim 1 is it is characterised in that press in described step 2
According to the test request of radiosensitivity, carry out system setting, calibration, main control computer starts interference electromagnetic field simulator.
4. a kind of radiosensitivity automatic test approach according to claim 2 it is characterised in that in described step 3
In each test frequency interference electromagnetic field stable period, the image that collection is used in step 4 no less than 3 width images compares.
5. a kind of radiosensitivity automatic test approach according to claim 4 is it is characterised in that incite somebody to action in described step 4
The background image that the image of step 3 collection is obtained with step 1 is compared, and comparative approach can adopt background subtraction, comparison diagram
The change of picture exceeds the region of influence of noise determining in step 1 and threshold value, provides report on the software interface of main control computer
Alert signal, is simultaneously emitted by alarm sound, points out testing crew tested products sensitivity phenomenon.
6. a kind of radiosensitivity automatic test approach according to claim 1 is it is characterised in that in described step 6 first
Reduce interference field force the thorough phenomenon of tested products sensitivity phenomenon disappear, then incrementally increase interference field strength until sensitivity phenomenon again
Secondary appearance, threshold level when record sensitivity phenomenon occurs and corresponding Frequency point；In the process, main control computer passes through the
One photographic head and the monitoring image of second camera collection tested products and product test instrument interface, and judged quick according to image
Feel the disappearance of phenomenon and occur again, the Frequency point of sensitivity phenomenon and corresponding threshold level in record automatically.
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
| 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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Effective date of registration: 20190228 Address after: 266555 Xiangjiang 98, Huangdao District, Qingdao City, Shandong Province Patentee after: China Electronics Technology Instrument and Meter Co., Ltd. Address before: 266555 No. 98 Xiangjiang Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: The 41st Institute of CETC |
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