CN1614438A - Testing method for dynamic characterist ics of electromagnetic relay - Google Patents

Testing method for dynamic characterist ics of electromagnetic relay Download PDF

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Publication number
CN1614438A
CN1614438A CN 200410043965 CN200410043965A CN1614438A CN 1614438 A CN1614438 A CN 1614438A CN 200410043965 CN200410043965 CN 200410043965 CN 200410043965 A CN200410043965 A CN 200410043965A CN 1614438 A CN1614438 A CN 1614438A
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CN
China
Prior art keywords
electromagnetic relay
armature
testing
imaging
signal
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CN 200410043965
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Chinese (zh)
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CN100375902C (en
Inventor
翟国富
梁慧敏
宫文峰
任万滨
张辉
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哈尔滨工业大学
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Priority to CNB2004100439655A priority Critical patent/CN100375902C/en
Publication of CN1614438A publication Critical patent/CN1614438A/en
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Publication of CN100375902C publication Critical patent/CN100375902C/en

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Abstract

A method for testing dynamic property of electromagnetic relay includes shooting light on amture to project reflected light on imaging device and forming picture on image transducer; coverting picture signal by A/D for storage, driving the relay to run and collecting data signal at each running position; filtering andintensifying data signal collected from each running position of amature and removing noise, integrating all collected data signals to form a complete dynamic property curve.

Description

The method of testing of electromagnetic relay dynamic perfromance
Technical field:
The present invention relates to a kind of electromagnetic relay method of dynamic characteristics that is used to test.
Background technology:
The operating characteristic of electromagnetic relay is divided into static characteristics and dynamic perfromance, can judge that according to static characteristics can electromagnetic system move or discharge reliably under certain excitation voltage or electric current, but the time response that can not reflect electromagnetic system also can't reflect its electromagnetic parameter and the mechanical parameter situation of change in the armature motion process.Not only require designed relay-operating time, release time on the engineering in specialized range, also require to delay as the case may be or accelerate attracting process or dispose procedure, make it have characteristics such as high speed, high reliability and high life, therefore must reduce the mechanical wear of moving component and the electric wearing and tearing of contact, and desire to reach the dynamic perfromance of the just necessary research electromagnetic relay of this purpose.The dynamic perfromance of electromagnetic system can be by record, analyze the kinetic characteristic of armature and carry out theoretical analysis according to it and realize.Since the nineties in last century, the research work that more domestic universities and colleges and research department and relay manufacturer have cooperated to carry out the relay dynamic perfromance.University of Fuzhou has developed ray machine electricity electromagnetic appliance dynamic checkout unit, this measurement mechanism adopts based on the CCD non-contact optoelectronic detection technique of CCD and measures the armature displacement, on the skeleton of electromagnetic system movable member, embed the thin slice of band slit, the motion parts of armature is drawn shell; By the irradiation of laser parallel light source, make it be imaged on the CCD surface again, again through handling the curve of the displacement conversion in time that obtains armature; Adopt detection and signal to amplify incorporate instrument grade micro-cutting formula silicon sensor and measure acceleration, the application surface attachment process, sensor is fixed on the geometric center of armature along direction of motion, can detects the acceleration of the relay electrical equipment (particularly miniature relay electrical equipment) of all size.This method is when measuring armature displacement and acceleration, all the motion parts (armature) to relay has added extra supplemental measurement tool, therefore, this measuring method in fact still belongs to the contact measuring method, inevitably will the kinetic characteristic of armature be exerted an influence.Nanjing electric power higher junior college has developed the miniature electro-magnetic relay dynamical property test system, this test macro adopts laser optical system, high speed linear array CCD imageing sensor and single-chip computer control system etc. partly to form the armature displacement test system, more accurately measure the armature displacement and the time relation of electromagnetic relay, thereby solved the dynamic characteristic test problem of electromagnetic relay.This method only is suitable for armature motion part and can transmitted light be imaged on clapper type relay on the CCD photosensitive unit, and it directly becomes digital signal by binarization circuit with the analog signal conversion that records, and the height of threshold voltage directly has influence on its measuring accuracy.More than these two kinds of method of testings all be to adopt transmission beam method to measure the armature displacement, have certain defective and limitation.
Summary of the invention:
Prior art can only be used to test clapper type relay, the motion parts of the relay of the type can be imaged on the imageing sensor by transmitted light, perhaps need to add supplemental measurement tool, promptly embedding the band thin slice on the armature of tested relay just can measure, in order to address these problems, a kind of method of testing of novel electromagnetic relay dynamic perfromance is provided, and this method is additional any supplemental measurement tool on relay, and non-clapper type relay is suitable for too.This method realizes by following step: armature 1 surface that, is radiated at electromagnetic relay 11 with lighting device 2, the ray cast that reflects is incident upon imaging device 4 lip-deep light and sees through imaging device 4 back imagings on imageing sensor 5 on the surface of imaging device 4; Two, the signal that imageing sensor 5 is extracted is undertaken storing after the A/D conversion by the A/D change-over circuit; Three, make armature 1 motion for electromagnetic relay 11 energisings, gather and write down the data-signal of armature 1 respectively according to the time interval that equates at each movement position; Four, the data-signal of armature 1 each movement position is carried out Digital Image Processing such as denoising, filtering; Five, after the data-signal of armature 1 each movement position of discretize fits to complete curve originally, carried out subsequent analysis work.The inventive method adopts a kind of non-contact measurement method based on imageing sensor, by rational light channel structure, obtain electromagnetic relay armature 1 displacement corresponding in course of action with the time, utilize digital image processing techniques to extract useful signal again, will fit to kinetic characteristic curve after its correction, the binaryzation.This method is additional any supplemental measurement tool on relay not, belongs to real non-cpntact measurement; Adopt reflectometry to measure the armature placement property, reflective light path no longer is confined to the armature motion part and can transmitted light be imaged on clapper type relay on the imageing sensor, can measure multiple relay; Directly do not make the hardware binarization circuit, but will convert digital signal to by the grey scale signal that imageing sensor collects, these digital signals are noted earlier utilized computing machine to analyze and handle again by the A/D change-over circuit.Owing to reasons such as lighting source, background environment, circuit transmission will produce noise signal inevitably, can carry out operations such as denoising, filtering, figure image intensifying and selection of threshold to this original image by the software MATLAB of U.S. Mathworks company, more help useful signal is extracted.
Description of drawings:
Fig. 1 is the structural representation of light path of the present invention, and Fig. 2 is the theory diagram of embodiment of the present invention one.
Embodiment:
Embodiment one: specify present embodiment below in conjunction with Fig. 1 and Fig. 2.The step of present embodiment is as follows: armature 1 surface that, is radiated at electromagnetic relay 11 with lighting device 2, the ray cast that reflects is incident upon imaging device 4 lip-deep light and sees through imaging device 4 back imagings on imageing sensor 5 on the surface of imaging device 4; Two, the signal that imageing sensor 5 is extracted is undertaken storing after the A/D conversion by the A/D change-over circuit; Three, make armature 1 motion for electromagnetic relay 11 energisings, gather and write down the data-signal of armature 1 respectively according to the time interval that equates at each movement position; The positional information (simulating signal) that imageing sensor 5 is collected stores data storage part 8 into after by 7 conversions of A/D change-over circuit; Electromagnetic relay 11 energising work are to carry out under the control of drive control part 6, and drive control part 6 controls make electromagnetic relay 11, A/D change-over circuit 7 and imageing sensor 5 three's co-ordinations; Four, the data-signal of armature 1 each movement position is carried out Digital Image Processing such as denoising, filtering; Five, after the data-signal of armature 1 each movement position of discretize fits to complete curve originally, carried out subsequent analysis work.Imageing sensor 5 adopts the line array CCD product of Toshiba, its model TCD1209D, and illuminator 2 adopts the LED source of parallel light of CCS company, and imaging device 4 adopts stereomicroscope.Among Fig. 2: 11---electromagnetic relay, 2---lighting device, 3---the three-dimensional machinery locating device, 4---imaging device, 5---imageing sensor, 6---drive control part, 7---the A/D change-over circuit, 8---the data storage part, 9---Flame Image Process, 10---the kinetic characteristic curve match.During system works, provide illumination to 11, come accurately to locate 11,4 and 5, adopt reflectometry to make the light that reflects from 11 motion parts be imaged on 5 surface through 4 by 3 by 2; Continue position, make 5 to receive reasonable picture signal with 3 adjustment 11; Control 11,5 and 7 co-ordination by 6, the switching time that makes actuation time of 11 and 7 as far as possible synchronously; Digital signal after 7 conversions is stored in 8 li, through the 9 discrete motion performance datas that obtain 11 motion parts, these data is carried out theory correction, obtains kinetic characteristic curve through 10 again.Three-dimensional machinery locating device 3 select for use ready-made swivel table etc. can realize three-dimensional space position move with the three-dimensional machinery locating device of attitude rotation or own make locate, feed arrangement.Three-dimensional machinery locating device 3 also can adopt microscopical objective table and the homemade relay mechanism that is installed.
Embodiment two: lighting device 2 is selected light sources such as tungsten lamp, halogen tungsten lamp, gas-discharge lamp, light emitting diode or laser instrument for use; Imageing sensor 5 is selected electrooptical devices such as ccd image sensor, cmos image sensor for use; Imaging device 4 is selected optical lens such as stereomicroscope or biological microscope for use; Imaging device 4, imageing sensor 5 adopt interferometric method to produce interference fringe, receive this striped with electrooptical device again.Other step is identical with embodiment one.

Claims (6)

1, the method for testing of electromagnetic relay dynamic perfromance, it is characterized in that it realizes by following step: armature (1) surface that, is radiated at electromagnetic relay (11) with lighting device (2), the ray cast that reflects is incident upon the lip-deep light of imaging device (4) and sees through imaging device (4) back in upward imaging of imageing sensor (5) on the surface of imaging device (4); Two, store after the signal that imageing sensor (5) is collected is changed through A/D by the A/D change-over circuit; Three, make armature (1) motion for electromagnetic relay (11) energising, gather and write down the data-signal of armature (1) respectively according to the time interval that equates at each movement position; Four, the data-signal of each movement position of armature (1) is carried out Digital Image Processing such as denoising, filtering; Five, after the data-signal of each movement position of armature (1) of discretize fits to complete curve originally, carried out subsequent analysis work.
2, the method for testing of electromagnetic relay dynamic perfromance according to claim 1 is characterized in that electromagnetic relay (11) is fixed on can make electromagnetic relay (11) finish three-dimensional space position to move on the mechanical positioner with attitude rotation.
3, the method for testing of electromagnetic relay dynamic perfromance according to claim 1 is characterized in that imageing sensor (5) selects ccd image sensor, cmos image sensor or video camera for use;
4, the method for testing of electromagnetic relay dynamic perfromance according to claim 1 is characterized in that lighting device (2) selects tungsten lamp, halogen tungsten lamp, gas-discharge lamp, light emitting diode or laser instrument for use.
5, the method for testing of electromagnetic relay dynamic perfromance according to claim 1 is characterized in that imaging device (4) selects stereomicroscope or biological microscope for use.
6, the method for testing of electromagnetic relay dynamic perfromance according to claim 1 is characterized in that imaging device (4), imageing sensor (5) adopt interferometric method to produce interference fringe, receive this striped with electrooptical device again.
CNB2004100439655A 2004-10-22 2004-10-22 Testing method for dynamic characterist ics of electromagnetic relay CN100375902C (en)

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Cited By (10)

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CN101893686A (en) * 2010-06-11 2010-11-24 河南电力试验研究院 Digital radiography-based breaker operating characteristic on-line detection device and method
CN101571885B (en) * 2009-06-12 2011-01-05 哈尔滨工业大学 Rapid calculating method for static and dynamic characteristics of electromagnetic relay
CN101566662B (en) * 2009-05-27 2011-01-05 福州大学 Electromagnetic appliance test system
CN102033199A (en) * 2010-12-20 2011-04-27 常熟理工学院 System for testing dynamic parameter of high-speed electromagnetic valve for knitting machine
CN102621488A (en) * 2012-04-17 2012-08-01 哈尔滨工业大学 System and method for testing storage performance of aerospace electromagnetic relay
CN102967844A (en) * 2012-11-08 2013-03-13 江苏省电力公司电力科学研究院 Automatic detection system with formal detection function of intelligent ammeters
CN103940346A (en) * 2014-04-23 2014-07-23 福州大学 Intelligent alternating current contactor three-dimensional dynamic testing device based on monocular vision technology
CN104316873A (en) * 2014-11-13 2015-01-28 云南电网公司电力科学研究院 Circuit breaker and mechanism status four-in-one recognition system
CN108416762A (en) * 2018-01-22 2018-08-17 浙江大学 The image zooming-out and image processing method that relay measures
CN110657964A (en) * 2019-09-03 2020-01-07 国网浙江省电力有限公司嘉兴供电公司 High-voltage circuit breaker mechanical performance detection system and method based on ubiquitous power Internet of things

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CN101566670B (en) * 2008-04-25 2012-07-04 毕青春 High-voltage switch tester

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CN2072230U (en) * 1990-03-29 1991-02-27 刘金铎 Portable tester for protective relay
CN1038784C (en) * 1994-02-28 1998-06-17 吉林大学 High-speed circuit electro-optic sampling analyser

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101566662B (en) * 2009-05-27 2011-01-05 福州大学 Electromagnetic appliance test system
CN101571885B (en) * 2009-06-12 2011-01-05 哈尔滨工业大学 Rapid calculating method for static and dynamic characteristics of electromagnetic relay
CN101893686A (en) * 2010-06-11 2010-11-24 河南电力试验研究院 Digital radiography-based breaker operating characteristic on-line detection device and method
CN101893686B (en) * 2010-06-11 2012-10-24 河南电力试验研究院 Digital radiography-based breaker operating characteristic on-line detection device and method
CN102033199A (en) * 2010-12-20 2011-04-27 常熟理工学院 System for testing dynamic parameter of high-speed electromagnetic valve for knitting machine
CN102033199B (en) * 2010-12-20 2013-01-23 常熟理工学院 System for testing dynamic parameter of high-speed electromagnetic valve for knitting machine
CN102621488A (en) * 2012-04-17 2012-08-01 哈尔滨工业大学 System and method for testing storage performance of aerospace electromagnetic relay
CN102967844A (en) * 2012-11-08 2013-03-13 江苏省电力公司电力科学研究院 Automatic detection system with formal detection function of intelligent ammeters
CN103940346A (en) * 2014-04-23 2014-07-23 福州大学 Intelligent alternating current contactor three-dimensional dynamic testing device based on monocular vision technology
CN103940346B (en) * 2014-04-23 2016-06-29 福州大学 Intelligent AC contactor three-dimensional dynamic testing device based on monocular vision technique
CN104316873A (en) * 2014-11-13 2015-01-28 云南电网公司电力科学研究院 Circuit breaker and mechanism status four-in-one recognition system
CN104316873B (en) * 2014-11-13 2017-07-28 云南电网公司电力科学研究院 A kind of breaker and mechanism status quaternity identifying system
CN108416762A (en) * 2018-01-22 2018-08-17 浙江大学 The image zooming-out and image processing method that relay measures
CN110657964A (en) * 2019-09-03 2020-01-07 国网浙江省电力有限公司嘉兴供电公司 High-voltage circuit breaker mechanical performance detection system and method based on ubiquitous power Internet of things

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