CN101458300B - Circuit discharging detecting system - Google Patents

Circuit discharging detecting system Download PDF

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Publication number
CN101458300B
CN101458300B CN2008102427186A CN200810242718A CN101458300B CN 101458300 B CN101458300 B CN 101458300B CN 2008102427186 A CN2008102427186 A CN 2008102427186A CN 200810242718 A CN200810242718 A CN 200810242718A CN 101458300 B CN101458300 B CN 101458300B
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circuit
image
imaging system
test
under
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CN2008102427186A
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CN101458300A (en
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徐毅刚
李东跃
周新建
吴坚业
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WUXI XINGDI INSTRUMENT CO Ltd
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WUXI XINGDI INSTRUMENT CO Ltd
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Abstract

A circuit discharge detection system comprises a detection device which can simultaneously observe circuit discharge spark and an entity image of a circuit to be detected and can exactly judge a discharge part and a discharge device of a circuit system to be detected by observation. According to the technical scheme provided by the invention, the circuit discharge detection system comprises an ultraviolet radiation imaging system, a visible light imaging system and an image fusion system, and is characterized in that the ultraviolet radiation imaging system and the visible light imaging system are used for simultaneously performing imaging observation on the circuit to be detected; the ultraviolet radiation imaging system captures ultraviolet radiation emitted by spark, generates and outputs a discharge spark image; the visible light imaging system captures and outputs the entity image of the circuit to be detected; and the detected discharge spark image and the entity image of the circuit to be detected are captured and processed by the image fusion system, and are integrated together by means of image infusion to form an image of the circuit to be detected which can indicate the discharge spark image and the position thereof.

Description

A kind of circuit discharging detecting system
Technical field
The present invention is a kind of detection system that is used to survey the electronic circuit electric discharge phenomena, is used to survey the sightless discharge spark of all kinds of electronic system naked eyes, to avoid interference and the infringement of circuit discharging to electronic equipment.The corresponding change optical system parameter of same system can also utilize the UV radiation of extraordinary flying object plumage cigarette to find flying object and it is discerned in the atmosphere radiation background.
Background technology
The electric discharge phenomena of electronic circuit are a kind of ubiquitous physical phenomenons, and the electromagnetic interference (EMI) of following with it is in electronic device design and the important technology defective of trying hard to avoid in producing.Along with the raising day by day of microelectronic circuit integrated level, the slight electric discharge phenomena of peripheral circuit be enough to the to exert an influence electromagnetic interference (EMI) of circuit performance, the discharge spark that slight discharge is produced then faint Direct observation check with the naked eye.It is to utilize ultraviolet imaging enhancer to observe detection that the detection of the discharge spark that causes for discharge has a kind of way, but, only be used in minority occasions such as high voltage power transmission and transforming system insulation performance detection at present owing to the ultraviolet imagery system can't become sharply defined image to limit operable field with discharge spark to being observed scenery simultaneously.For complicated intensive Circuits System such as various panel boxs, instrument and meter circuit, need accurately to judge the discharge position of circuit-under-test system and the application scenario of discharge device still do not have effective technological means at present.
In addition, adopt ultraviolet low-light level imaging technology, by the what is called in the earth atmosphere window " day blind area ", utilize the UV radiation in the extraordinary flying object plumage cigarette, can in the atmosphere radiation background, survey, find and follow the tracks of extraordinary flying object.Equally, because UV radiation utilizes same optical system can't become sharply defined image simultaneously with visible radiation, it is difficult carrying out kind identification, attitude observation and accurately aim at it when find extraordinary flying object by UV radiation.
Summary of the invention
The objective of the invention is to design a kind of circuit discharging detecting system, this system can observe the pick-up unit of electronic circuit discharge spark and circuit-under-test solid images simultaneously, be used for complicated intensive Circuits System such as various panel boxs, instrument and meter circuit, can accurately judge the discharge position and the discharge device of circuit-under-test system by observation.
According to technical scheme provided by the invention, described circuit discharging detecting system comprises UV radiation imaging system, visual light imaging system and image co-registration disposal system, it is characterized in that: utilize UV radiation imaging system and visual light imaging system simultaneously circuit-under-test to be carried out imaging observation; The UV radiation imaging system is caught the UV radiation that discharge spark sends, and produces and output discharge spark image; The visual light imaging system acquisition is also exported the solid images of circuit-under-test; By the image co-registration disposal system solid images of detected discharge spark image and circuit-under-test is caught and handled, and in the mode of image co-registration detected discharge spark image and circuit-under-test solid images are combined, form the circuit-under-test image that identifies discharge spark image and position thereof.
Described UV radiation imaging system comprises ultraviolet object lens, is positioned at the ultraviolet imaging enhancer and the image capturing system of ultraviolet object lens back; Ultraviolet object lens is caught the UV radiation that discharge spark sends, and after ultraviolet imaging enhancer strengthens, is produced and output discharge spark image by image capturing system.Described visual light imaging system comprises object lens and is positioned at the visible image capturing system of object lens back; Described object lens are caught the image of circuit-under-test, produce and export the solid images of circuit-under-test through the visible image capturing system.
Described object lens can be imaging lens independently; Also can be ultraviolet object lens, when adopting ultraviolet object lens, between the back of described ultraviolet object lens and described visible image capturing system, a spectroscope is set; Utilize spectroscope that the spectral radiance imaging beam except that ultraviolet band is reflexed to the visible image capturing system.The visible image booster is set in the visible image capturing system.
In described circuit discharging detecting system, also comprise one group of thermal imaging system, described thermal imaging system is positioned at the front of described image co-registration disposal system; The solid images of the circuit-under-test that the discharge spark image that circuit-under-test caloradiance distribution plan that described thermal imaging system obtains and ultraviolet imagery system obtain, visual light imaging system obtain together is input to the image co-registration disposal system, the data of the solid images of above-mentioned discharge spark image, circuit-under-test and circuit-under-test caloradiance distribution plan are handled and merged calculating by the image co-registration disposal system, obtain to have comprised the circuit-under-test image that identifies discharge spark image and position and circuit-under-test Temperature Distribution gradient.
Described UV radiation imaging system comprises ultraviolet object lens, is positioned at the ultraviolet imaging enhancer and the image capturing system of ultraviolet object lens back; Ultraviolet object lens is caught the UV radiation that discharge spark sends, and after ultraviolet imaging enhancer strengthens, is produced and output discharge spark image by image capturing system; Described visual light imaging system comprises described ultraviolet object lens and is positioned at the visible image capturing system of described ultraviolet object lens back; Between the back of described ultraviolet object lens and described visible image capturing system, a spectroscope is set; Utilize spectroscope that the spectral radiance imaging beam except that ultraviolet band is reflexed to the visible image capturing system; Described ultraviolet object lens is caught the image of circuit-under-test, produces and export the solid images of circuit-under-test through the visible image capturing system.
Characteristics of the present invention are as follows:
1: this detection system utilizes ultraviolet imaging enhancer to amplify the performance of faint UV radiation picture signal, to the ultraviolet spectrum that discharge spark sent catch, amplification and imaging, can find out and observe the faint discharge spark that the electronic circuit discharge is sent, thereby can the design or the production defective that may cause electromagnetic interference (EMI) be detected and assess.
2: this detection system combines discharge spark image and the circuit-under-test solid images that monitors by image fusion technology, not only can detect circuit-under-test and whether have electric discharge phenomena, and can in the display circuit position or the device of electric discharge phenomena take place, thereby the reason that can clearly more analyze the electric discharge phenomena generation effectively is beneficial to take measure targetedly.
3: this detection system can be implemented in the discharge examination under the dark surrounds by the mode that installs image intensifier in the visual light imaging system additional, the performance of utilizing image intensifier to amplify weak image signal shows the solid images of circuit-under-test under the dark surrounds, and discharge spark as the autoluminescence radiation source under the environment of dark with easier detecting.So both can under complex environments such as confined space or open-air no illumination condition, effectively implement to detect, and also can utilize the advantage of noise background attenuation under dark surrounds to detect, to improve the detection sensitivity of discharge spark.
4: after this detection system increases by one tunnel thermal imaging detection system, can be when surveying and analyzing the circuit-under-test electric discharge phenomena, the heating situation of circuit is detected and analyzes.
5: if this detection system optical parametric is done suitably to adjust, can utilize the UV radiation in the extraordinary flying object plumage cigarette, in the atmosphere radiation background, extraordinary flying object is surveyed, found and follows the tracks of, and simultaneously extraordinary flying object is carried out outward appearance identification, flight attitude observation or accurately aiming.
Description of drawings
Fig. 1 is a principle of the invention block diagram.
Fig. 2 is a flexible program of the present invention.
Fig. 3 is an another kind of flexible program of the present invention.
Fig. 4 is the scheme of appending thermal imaging system.
Embodiment
This detection system is made up of UV radiation imaging system, visual light imaging system and image co-registration disposal system three parts.Detection system is carried out imaging observation to circuit-under-test simultaneously by UV radiation imaging system and visual light imaging system, and the UV radiation image (discharge spark image 8) that observes and visible images (solid images 5 of circuit-under-test) are caught and handled by the image co-registration disposal system, mode with image co-registration combines detected discharge spark image 8 and circuit-under-test solid images 5, can find the discharge spark that faint discharge causes thus and identify position or the device that circuit-under-test 2 produces discharge spark.
The UV radiation imaging system is utilized the generation of the ultraviolet detection discharge spark that faint discharge spark produces and it is carried out imaging observation, the visual light imaging system then utilizes the background illuminance of testing environment that the circuit-under-test entity is carried out the visible spectrum imaging, the image co-registration disposal system by computing machine and software systems thereof to above-mentioned two kinds of images catch, correction and fusion treatment, thereby produce the circuit-under-test solid images that identifies discharge spark.
The effect of described UV radiation imaging system is to remove UV radiation part in addition in full spectral radiance background, and the faint UV radiation that discharge spark produces is amplified and imaging.The UV radiation imaging system is made up of ultraviolet imaging lens 11, ultraviolet imaging enhancer 10 and image capturing system 9 thereof.Ultraviolet imaging lens 11 is caught UV radiation that discharge spark sends and it is imaged onto on the target surface of ultraviolet imaging enhancer 10, ultraviolet imaging enhancer 10 with filtering the faint ultraviolet image signal of non-ultraviolet background radiation amplify and be coupled to follow-up image capturing system 9, thereby can in stronger background spectrum, detect faint discharge spark ultraviolet spectrum and to its imaging output.
Described visual light imaging system is made up of common imaging lens 3 and camera system 4, is used to observe and catch the solid images 5 of circuit-under-test.As a kind of flexible program, the visual light imaging system can with the shared same imaging lens 11 of UV radiation imaging system, and pass through spectroscope 12 with ultraviolet spectrum and other spectral separation, deliver to ultraviolet imaging enhancer 10 and visible images camera system respectively to obtain corresponding ultraviolet and visual picture.Another kind of flexible program is to use image intensifier 13 in the visual light imaging system, its benefit is to carry out discharge examination in the environment of dark, improved on the one hand the environment for use adaptability of system, on the other hand in the environment of dark also than being easier to detect fainter discharge spark.
Described image co-registration disposal system 6 comprises computing machine and image co-registration process software, can carry out captured in real time to the image that UV radiation imaging system and visual light imaging system are gathered by this software, and to two width of cloth images of catching accurately locate, multiplying power is proofreaied and correct, brightness is adaptive and computing and processing such as image co-registration, thereby obtain to observe simultaneously the circuit-under-test image document of discharge spark and circuit entity.
If in detection system, increase by one group of thermal imaging system again, and the thermal imagery image information is transferred to the image co-registration disposal system with ultraviolet image information, visual picture information, then become another flexible program, utilize this scheme when surveying and analyzing the circuit-under-test discharge spark, heating and the distribution situation thereof to circuit to detect and to analyze.
Detection and identification as if this detection system being used for extraordinary flying object do not need above-mentioned various schemes are carried out the change of principle, only need the concrete technical parameter of change.The optical parametric of UV radiation and visible image capturing object lens is done suitably to adjust, make it to become telescopic system.And the spectrum parameter of the filter system in the ultraviolet imagery system made corresponding change, the logical wave band with atmospheric window medium ultraviolet " day blind area " of band of filter system is matched get final product.
As shown in Figure 1: on the circuit-under-test 2 because the sightless faint discharge spark 1 of discharge generation human eye, catch the UV radiation that discharge spark 1 is sent by the UV radiation imaging system that ultraviolet object lens 11, ultraviolet imaging enhancer 10 and image capturing system 9 thereof constitute, produce and output discharge spark image 8.Meanwhile, visual light imaging system acquisition that constitutes by imaging lens 3 and visible image capturing system 4 and the solid images 5 of exporting circuit-under-test.Image co-registration disposal system 6 receives above-mentioned two width of cloth image informations and carries out the processing and fusion calculating of view data, the final circuit-under-test image 7 that identifies discharge spark image and position thereof that forms.By opportunity, the position of understanding the discharge spark appearance or the device that produces discharge spark, can provide objective foundation to effective analysis discharge reason and for formulating technical measures.
A deformation program is similar to above scheme, as shown in Figure 2: because the sightless faint discharge spark 1 of discharge generation human eye, the UV radiation imaging system that is made of ultraviolet object lens 11, ultraviolet imaging enhancer 10 and image capturing system 9 thereof is caught the UV radiation that discharge spark sends and is exported discharge spark image 8 on the circuit-under-test 2.Different is: the imaging lens of visible images and ultraviolet object lens 11 are public, utilize spectroscope 12 that the spectral radiance imaging beam except that ultraviolet band is reflexed to visible image capturing system 4, thereby make ultraviolet object lens 11, spectroscope 12 and visible image capturing system 4 constitute the visual light imaging system, be used for catching and exporting the solid images 5 of circuit-under-test.Image co-registration disposal system 6 receives above-mentioned two width of cloth image informations and carries out the processing and fusion calculating of view data, the final circuit-under-test image 7 that identifies discharge spark image and position thereof that forms.
Another flexible program is as shown in Figure 3: because the sightless faint discharge spark 1 of discharge generation human eye, the UV radiation imaging system that is made of ultraviolet object lens 11, ultraviolet imaging enhancer 10 and image capturing system 9 thereof is caught the UV radiation that discharge spark sends and is exported discharge spark image 8 on the circuit-under-test 2.Different is: added visible image booster 13 in the visual light imaging system, so system can obtain the solid images of circuit-under-test in the environment of dark.By imaging lens 3 with comprise the visual light imaging system that the visible image capturing system 4 of visible image booster 13 constitutes, utilize the enlarging function of 13 pairs of picture signals of visible image booster to catch and export the solid images 5 of circuit-under-test in the dark surrounds.Image co-registration disposal system 6 receives above-mentioned two width of cloth image informations and carries out the processing and fusion calculating of view data, the final circuit-under-test image 7 that identifies discharge spark image and position thereof that forms.
Another flexible program is as shown in Figure 4: in such scheme, increase by one tunnel thermal imaging detection system, can be when surveying and analyzing the circuit-under-test electric discharge phenomena, and the heating situation of circuit-under-test different parts is detected and analyzes.
Specific embodiments is: no matter so that is a kind of in the above-mentioned each side case, all can be by increasing by one group of thermal imaging system 15 therein, make it with original system in UV radiation imaging system, visual light imaging system form imaging observation platform together to three different radiation wave band, to obtain the image document of corresponding radiation spectral coverage.The UV radiation discharge spark image that circuit-under-test caloradiance distribution Figure 16 that is obtained by thermal imaging system 15 and ultraviolet imagery system obtain, the circuit-under-test solid images that the visual light imaging system obtains together are input to image co-registration disposal system 6.Carry out data processing and merge calculating by 6 pairs of above-mentioned three width of cloth view data of image co-registration disposal system, thereby obtain to have comprised the circuit-under-test image 17 that identifies discharge spark image and multiple information such as position and circuit-under-test Temperature Distribution gradient thereof.
The detection method that native system provides can be on a large scale, at a distance all kinds of electronic circuit systems are carried out discharge spark detects, and when determining whether there are electric discharge phenomena, can determine the position or even the device of generation electric discharge phenomena accurately.Implement to detect by the UV radiation of discharge spark, can not be subjected to the influence of peripheral electromagnetic environment, also the not interference of the illuminating position of examined environment basically.Can detect and analyze the heating situation of circuit-under-test simultaneously by thermal imaging system in case of necessity, suitably adjust design parameter and native system can be used for discovery, recognition and tracking and aiming extraordinary flying object.

Claims (1)

1. circuit discharging detecting system, comprise UV radiation imaging system, visual light imaging system, image co-registration disposal system (6) and thermal imaging system (15), it is characterized in that: utilize described UV radiation imaging system, described visual light imaging system and described thermal imaging system (15) simultaneously circuit-under-test (2) to be carried out imaging observation; Described UV radiation imaging system is caught the UV radiation that discharge spark (1) is sent, and produces and output discharge spark image (8); Described visual light imaging system acquisition is also exported the solid images (5) of circuit-under-test; Described thermal imaging system (15) obtains circuit-under-test caloradiance distribution plan (16); The discharge spark image (8) that the circuit-under-test caloradiance distribution plan (16) that described thermal imaging system (15) obtains and described ultraviolet imagery system obtain, the solid images (5) of the circuit-under-test that described visual light imaging system obtains together is input to described image co-registration disposal system (6), by described image co-registration disposal system (6) to above-mentioned discharge spark image (8), the data of solid images of circuit-under-test (5) and circuit-under-test caloradiance distribution plan (16) are handled and are merged calculating, thereby obtain to have comprised the circuit-under-test image (17) that identifies discharge spark image (8) and position and circuit-under-test Temperature Distribution gradient;
Wherein, described UV radiation imaging system is used for the part beyond full spectral radiance background is removed UV radiation, and the faint UV radiation that discharge spark produces amplified and imaging, described UV radiation imaging system comprises ultraviolet object lens (11), is positioned at the ultraviolet imaging enhancer (10) and the image capturing system (9) of described ultraviolet object lens back; Described ultraviolet object lens (11) is caught the UV radiation that discharge spark (1) is sent, and after described ultraviolet imaging enhancer (10) strengthens, is produced and output discharge spark image (8) by described image capturing system (9);
Described visual light imaging system comprises object lens and is positioned at the visible image capturing system (4) of described object lens back; Described object lens are caught the image of circuit-under-test (2), produce and export the solid images (5) of circuit-under-test through described visible image capturing system (4); Described object lens are the same described ultraviolet object lens (11) in the described UV radiation imaging system, between the back of described ultraviolet object lens (11) and described visible image capturing system (4) spectroscope (12) are set; Utilize described spectroscope (12) that the spectral radiance imaging beam except that ultraviolet band is reflexed to described visible image capturing system (4);
Visible image booster (13) is set in described visible image capturing system (4), utilizes described visible image booster (13) enlarging function of picture signal to be caught and exported the solid images (5) of circuit-under-test in the dark surrounds.
CN2008102427186A 2008-12-26 2008-12-26 Circuit discharging detecting system Expired - Fee Related CN101458300B (en)

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CN102323520B (en) * 2011-05-23 2014-04-16 华北电力大学(保定) Double-spectrum helmet display
CN102323519B (en) * 2011-05-23 2013-12-04 华北电力大学(保定) Dual-spectrum helmet detector
CN102288884B (en) * 2011-09-13 2014-06-18 华北电力大学(保定) External insulation discharging detecting method based on ultraviolet light spots
CN103634565A (en) * 2013-09-24 2014-03-12 北京环境特性研究所 OMAP-based ultraviolet and visible light dual-channel image acquisition, processing and display system
CN105890775B (en) * 2016-06-30 2019-07-05 北京星火博安智能科技有限公司 A kind of immune system and method for infrared heat source
CN106646159B (en) * 2016-12-12 2019-03-29 华北电力科学研究院有限责任公司 The corona detection method and device of generator stator end winding
CN107192924A (en) * 2017-03-21 2017-09-22 华北电力大学(保定) A kind of non-common optical axis ultraviolet imager electric discharge point location antidote
CN110275098B (en) * 2019-06-28 2021-07-09 杭州赫太克科技有限公司 Ultraviolet imager
TWI825608B (en) * 2022-03-04 2023-12-11 江政慶 Abnormality detection system and abnormality detection method

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