CN103675458A - Automatic insulation resistance and characteristic resistance tester - Google Patents

Automatic insulation resistance and characteristic resistance tester Download PDF

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Publication number
CN103675458A
CN103675458A CN201310685316.4A CN201310685316A CN103675458A CN 103675458 A CN103675458 A CN 103675458A CN 201310685316 A CN201310685316 A CN 201310685316A CN 103675458 A CN103675458 A CN 103675458A
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CN
China
Prior art keywords
module
resistance
switch
channel
electrical node
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CN201310685316.4A
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Chinese (zh)
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CN103675458B (en
Inventor
张东旭
王康
胡常青
周斯勉
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北京航天时代光电科技有限公司
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Publication of CN103675458A publication Critical patent/CN103675458A/en
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Publication of CN103675458B publication Critical patent/CN103675458B/en

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Abstract

The invention discloses an automatic insulation resistance and characteristic resistance tester which comprises a testing cable, a multiplexing switch module, a universal meter module, a CPCI bus and an industrial personal computer. The multiplexing switch module is connected with an electrical node interface of a device to be tested through the testing cable and can control an internal relay switch through programs to enable input channels to be automatically disconnected and connected with an output channel, the universal meter module automatically measure a resistance value of an electrical node of the device to be tested through the multiplexing switch module and outputs a measurement result to the CPCI bus, the industrial personal computer reads data from the CPCI bus and performs processing and displaying. The automatic insulation resistance and characteristic resistance tester can automatically test insulation resistance and characteristic resistance of the electrical node of the device to be tested, the problems including complicated connection in the traditional product checkout process and errors, time waste and the like caused by manual operation are solved, and the tester has the advantages of being high in reliability and accuracy and saving the time.

Description

A kind of insulation resistance and featured resistance auto testing instrument

Technical field

The present invention relates to a kind of resistance meter, particularly a kind of insulation resistance and featured resistance auto testing instrument, belong to circuit measuring field.

Background technology

Examination requirements due to the interface electrical node of electric device, need to detect the resistance between the resistance of each electrical node and casing and each electrical node, and the resistance value of all electrical nodes should meet the electrical design requirement of electric device.In existing inspection technology, there is the phenomenon of a large amount of electrical node resistance of manual measurement, the workload that causes hand dipping more greatly, easily make mistakes, the shortcoming such as Measuring Time is long, intelligent degree is not high, in order to meet the automatic test requirement of electrical node, require robotization resistor detecting device should meet that measured node is many, measurement pattern is optional etc., in addition, electrical node also needs high direct voltage excitation to detect the withstand voltage degree of electrical node.

Summary of the invention

Technical matters solved by the invention is: overcome the deficiencies in the prior art, a kind of insulation resistance and featured resistance auto testing instrument are provided, the insulation resistance of electrical node interface and the resistance of featured resistance that can Real-time Collection electric device to be measured, realize the automatic measurement of insulation resistance and featured resistance.

Technical scheme of the present invention is: a kind of insulation resistance and featured resistance auto testing instrument, comprise test cable, multiplexer switch module, multimeter module, cpci bus and industrial computer;

Multiplexer switch module is connected with device electrical node interface to be measured by test cable, the output channel interface of multiplexer switch module is measured channel interface with multimeter module and is connected, multimeter module is automatically measured and is outputed in cpci bus the resistance value of device electrical node to be measured by multiplexer switch module, and industrial computer takes out data and processs and displays from cpci bus;

Multiplexer switch module comprises that mode selection switch and 64 selects 1 channel switch and 32 to select 2 channel switchs, multiplexer switch module selects different channel switchs to realize different resistance measurement patterns by mode selection switch, 64 select 1 channel switch that 64 electrical nodes are connected with multimeter module+end one by one, for measuring each electrical node insulating resistance value to casing separately, 32 select 2 channel switchs by 32 pairs of electrical nodes by being connected with multimeter module +/-end, for measuring the featured resistance value between every pair of 32 pairs of electrical node.

Described mode selection switch is electronic multi-channel switch or program control relay module switch; Described 64 to select 1 channel switch and 32 to select 2 channel switchs be relay module switch.

Described multimeter module adopts digital multimeter or CPCI/PCI interface multimeter card, and multimeter module adopts 6.5 precision multimeters, resistance measurement scope 0-500M Ω.

Described multiplexer switch module realizes with board form or circuit module form, inner integrated two kinds of switch on and off patterns, by stored program control system, realize 64 road electrical nodes and be connected with the break-make of output channel respectively, Huo64 road electrical node is connected with the break-make of output channel in pairs.

Described industrial computer is general CPCI/PCI industrial computer or portable machine; Multiplexer switch Module-embedding is in industrial computer.

Described insulation resistance and featured resistance auto testing instrument also provide the voltage-withstand test of electrical node, and the voltage-withstand test that program control direct current high-pressure modular is electrical node provides DC voltage, program control direct current high-pressure modular direct voltage output scope 0-500V.

The present invention's technique effect is compared with prior art:

(1) the present invention adopts multiplexer switch, multimeter module, program control high-pressure modular can be worked reliably, have advantages of good environmental adaptability, reliability is high, precision is high, meets the requirement of using under the mal-conditions such as high temperature, vibration simultaneously.

(2) industrial computer of the present invention can detect, process mass data by long-range real-time online in real time, and has that image conversion shows and analyzing and processing function, automaticity high.

(3) multiplexer switch of the present invention has the advantages that convenient, the inner contact of pattern conversion and control is reliable, the life-span is long, interface is easy to connect and reliability is high.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of a kind of insulation resistance of the present invention and featured resistance auto testing instrument;

Fig. 2 is multiplexer switch module diagram in the present invention.

Embodiment

As shown in Figure 1, the present invention includes test cable 1, multiplexer switch module 2, multimeter module 4, cpci bus 5 and industrial computer 6.

Multiplexer switch module 2 is connected with device electrical node interface to be measured by test cable 1, the output channel interface of multiplexer switch module 2 is measured channel interface with multimeter module 4 and is connected, multimeter module 4 is automatically measured and is outputed in cpci bus 5 resistance value of device electrical node to be measured by multiplexer switch module 2, and industrial computer 6 takes out data and processs and displays from cpci bus 5.

As shown in Figure 2, multiplexer switch module 2 comprises that mode selection switch 201 and 64 selects 1 channel switch 202 and 32 to select 2 channel switchs 203, multiplexer switch module 2 selects different channel switchs to realize different resistance measurement patterns by mode selection switch 201, 64 select 1 channel switch 202 that 64 electrical nodes are connected with "+" end of multimeter module 4 one by one, during measurement by gauge tap successively conducting sig1 to sig64 signal wire, gnd(body contact point) be connected to "-" end of multimeter module 4, for measuring each electrical node resistance value to casing separately, it is insulating resistance value, 32 select 2 channel switchs 203 by 32 pairs of electrical nodes by being connected with multimeter module 4 "+"/"-" end, as paired signalling channels of composition such as sig1 and sig2, sig3 and gng, (paired signalling channel determines by testing cable, test cable has been determined, 32 pairs of electrical nodes have just been determined), by gauge tap by each passage "+" end be connected with "+" end of multimeter module 4, passage "-" is held holds and be connected with "-" of multimeter module 4, successively every a pair of signal is measured, realized the measurement of 32 pairs of featured resistance values between electrical node.64 select 1 channel switch and 32 to select two kinds of patterns of 2 channel switch jointly to realize the resistance detection of device electrical node to be measured.Mode selection switch 201 is electronic multi-channel switch or program control relay module switch; 64 select 1 channel switch 202 and 32 to select 2 channel switchs 203 for relay module switch.

Insulation resistance and featured resistance auto testing instrument also provide the voltage-withstand test of electrical node, and the voltage-withstand test that program control direct current high-pressure modular 3 is electrical node provides DC voltage.

Device electrical node interface to be measured of the present invention should have energising and the testability of off-position, and what have that interface electrical node tests can spreadability.During tester of the present invention work, first should clear and definite electric device electrical node quantity be less than 64 tunnels, if higher than 64 tunnels, can be optimized it, selected parts Chu64 road carries out the resistance measurement of electrical node, test cable 1 line order can change as required.

Clear and definite after the electrical node of electric device, test cable 1 should be according to device electrical node to be detected corresponding conducting connection one by one, and be optimized design lines order according to mode selection switch 201, meet and can carry out the insulation measurement between individual passage and casing to 64 passages, also meet and can measure 32 pairs of interchannel feature resistances.

Multiplexer switch module 2 mainly realizes the selection of resistance measurement pattern, multiplexer switch 2 can be realized also and can realize with the form of circuit module with board form, (multiplexer switch 2 inside can integrated two or more switch on and off patterns as required for inner integrated two kinds of switch on and off patterns, to realize difference in functionality), by stored program control system, realizing 64 road electrical nodes is connected with the break-make of output channel respectively, Huo64 road electrical node is connected with the break-make of output channel in pairs, and interface adopts cpci bus form; High direct voltage module 3 mainly realizes with circuit module form; Multimeter module 4 can adopt conventional belt communication function multimeter or CPCI/PCI interface multimeter card, and precision is 6.5, resistance measurement scope 0-500M Ω; Industrial computer 6 is realized with desk-top industrial computer or portable integrated machine; Multiplexer switch module 2 is embedded in industrial computer 6.Wherein, multiplexer switch module 2 inside should have multidiameter option switch relay, and meanwhile, inside is equipped with logic control element, and conducting, Disconnected mode that can pilot relay be realized the function of automatic wheel conductance break-make open relay and output module passage.

Multimeter module 4 can be measured the resistance value of input channel automatically, measurement result is connected with industrial computer 6 by cpci bus 5 or serial communication interface with ASCII character form, industrial computer 6 can receive the data that multimeter module 4 is sent in real time, and data are resolved, calculate, shown and process.

Program control high-pressure modular 3 can provide high pressure excitation to each passage, after its inner energising, can produce DC high-voltage source, scope 0-500V, duration is controlled, and communication control module is provided, and can to high pressure amplitude and channel position, carry out the control of the aspects such as conducting, disconnection, duration by programming, and current magnitude of voltage is turned back to industrial computer 6, be convenient to industrial computer 6 condition monitorings.

The software processing system of insulation resistance and featured resistance auto testing instrument is Labview language development software systems, and can with VC, the exploitation of the computer language procedure system compatible such as VB.This disposal system can real-time selection resistance measurement pattern, and on human-computer interaction interface, shows in time, and real-time online ground shows the resistance of insulation resistance and featured resistance.By measurement data is carried out to diagnostic analysis, generate measurement result form, for the resistance of electric device electrical node, check reference is provided.

Finally, a kind of insulation resistance disclosed by the invention and featured resistance auto testing instrument are through test and Preliminary Applications, and result shows systematic survey passage 64 passages, 6.5 of measuring accuracy, two kinds of the optional insulation resistance of pattern and featured resistances.

The content not being described in detail in instructions of the present invention belongs to those skilled in the art's known technology.

Claims (6)

1. insulation resistance and a featured resistance auto testing instrument, is characterized in that: comprise test cable (1), multiplexer switch module (2), multimeter module (4), cpci bus (5) and industrial computer (6);
Multiplexer switch module (2) is connected with device electrical node interface to be measured by test cable (1), the output channel interface of multiplexer switch module (2) is measured channel interface with multimeter module (4) and is connected, multimeter module (4) is automatically measured and is outputed in cpci bus (5) the resistance value of device electrical node to be measured by multiplexer switch module (2), and industrial computer (6) takes out data and processs and displays from cpci bus (5);
Multiplexer switch module (2) comprises mode selection switch (201), 64 select 1 channel switch (202) and 32 to select 2 channel switchs (203), multiplexer switch module (2) selects different channel switchs to realize different resistance measurement patterns by mode selection switch (201), 64 select 1 channel switch (202) that 64 electrical nodes are connected with multimeter module (4)+end one by one, for measuring each electrical node insulating resistance value to casing separately, 32 select 2 channel switchs (203) by 32 pairs of electrical nodes by being connected with multimeter module (4) +/-end, for measuring the featured resistance value between every pair of 32 pairs of electrical node.
2. according to a kind of insulation resistance claimed in claim 1 and featured resistance auto testing instrument, it is characterized in that: described mode selection switch (201) is electronic multi-channel switch or program control relay module switch; Described 64 to select 1 channel switch (202) and 32 to select 2 channel switchs (203) be relay module switch.
3. according to a kind of insulation resistance claimed in claim 1 and featured resistance auto testing instrument, it is characterized in that: described multimeter module (4) adopts digital multimeter or CPCI/PCI interface multimeter card, multimeter module (4) adopts 6.5 precision multimeters, resistance measurement scope 0-500M Ω.
4. according to a kind of insulation resistance claimed in claim 1 and featured resistance auto testing instrument, it is characterized in that: described multiplexer switch module (2) realizes with board form or circuit module form, inner integrated two kinds of switch on and off patterns, by stored program control system, realize 64 road electrical nodes and be connected with the break-make of output channel respectively, Huo64 road electrical node is connected with the break-make of output channel in pairs.
5. according to a kind of insulation resistance claimed in claim 1 and featured resistance auto testing instrument, it is characterized in that: described industrial computer (6) is general CPCI/PCI industrial computer or portable machine; Multiplexer switch module (2) is embedded in industrial computer (6).
6. according to a kind of insulation resistance claimed in claim 1 and featured resistance auto testing instrument, it is characterized in that: described insulation resistance and featured resistance auto testing instrument also provide the voltage-withstand test of electrical node, the voltage-withstand test that program control direct current high-pressure modular (3) is electrical node provides DC voltage, program control direct current high-pressure modular (3) direct voltage output scope 0-500V.
CN201310685316.4A 2013-12-13 2013-12-13 A kind of insulation resistance and featured resistance auto testing instrument CN103675458B (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103983856A (en) * 2014-05-09 2014-08-13 京东方科技集团股份有限公司 Automatic detection equipment and method of low voltage differential signal interface matched resistor
CN104635191A (en) * 2015-03-12 2015-05-20 李景禄 Automatic checking method for intelligent insulation parameter test instrument
CN104807594A (en) * 2015-03-31 2015-07-29 广西智通节能环保科技有限公司 Automatic measuring system based on matrix switch
CN104849559A (en) * 2015-06-01 2015-08-19 绵阳市维博电子有限责任公司 Apparatus and method for testing contact resistance of conductive slip ring automatically
CN106597108A (en) * 2017-01-05 2017-04-26 上海富崇电子科技有限公司 SIR (Surface insulation resistance) testing system
CN106771624A (en) * 2017-02-20 2017-05-31 中国电子产品可靠性与环境试验研究所 Interconnection resistance on-line monitoring system and method
CN107064781A (en) * 2017-06-26 2017-08-18 北方电子研究院安徽有限公司 A kind of simple resistor network automatic test approach
CN107643476A (en) * 2017-08-01 2018-01-30 河南中烟工业有限责任公司 A kind of Profibus insulated bus performance test methods based on virtual instrument technique
CN107727961A (en) * 2017-09-28 2018-02-23 国营芜湖机械厂 A kind of ejector seat electric attachments automatic Synthesis detection device and its detection method
CN107942166A (en) * 2017-11-16 2018-04-20 北京宇航系统工程研究所 A kind of fire-working article test system
CN107942140A (en) * 2017-11-20 2018-04-20 上海空间电源研究所 Detect the measuring system and detection method of satellite power supply control system interface impedance
CN108152542A (en) * 2017-12-28 2018-06-12 北京航天新风机械设备有限责任公司 A kind of CPCI type high voltage relay modules for Insulation test and continuity test
CN108181497A (en) * 2017-12-04 2018-06-19 北京控制与电子技术研究所 A kind of measuring method of the multichannel AC voltage effective value based on cpci bus

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CN101738540A (en) * 2009-11-04 2010-06-16 中国科学院长春光学精密机械与物理研究所 Method for automatically measuring static characteristic of electrical interface
CN102033207A (en) * 2010-11-16 2011-04-27 天津市中环电子计算机有限公司 Automatic test equipment of lithium battery BP protection board
CN202512172U (en) * 2011-12-12 2012-10-31 北京工业大学 Intelligent machine electrical impedance sensor for monitoring structure health conditions

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US20050060109A1 (en) * 2003-09-17 2005-03-17 Analog Devices, Inc. Measuring circuit and a method for determining a characteristic of the impedance of a complex impedance element for facilitating characterization of the impedance thereof
US20050238165A1 (en) * 2004-03-24 2005-10-27 Infineon Technologies Ag Method for measuring resistance for a subscriber line interface circuit using a protective circuit
CN101738540A (en) * 2009-11-04 2010-06-16 中国科学院长春光学精密机械与物理研究所 Method for automatically measuring static characteristic of electrical interface
CN102033207A (en) * 2010-11-16 2011-04-27 天津市中环电子计算机有限公司 Automatic test equipment of lithium battery BP protection board
CN202512172U (en) * 2011-12-12 2012-10-31 北京工业大学 Intelligent machine electrical impedance sensor for monitoring structure health conditions

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103983856A (en) * 2014-05-09 2014-08-13 京东方科技集团股份有限公司 Automatic detection equipment and method of low voltage differential signal interface matched resistor
US9465062B2 (en) 2014-05-09 2016-10-11 Boe Technology Group Co., Ltd. Device and method for automatically detecting low voltage differential signal interface matching resistor
CN104635191A (en) * 2015-03-12 2015-05-20 李景禄 Automatic checking method for intelligent insulation parameter test instrument
CN104807594A (en) * 2015-03-31 2015-07-29 广西智通节能环保科技有限公司 Automatic measuring system based on matrix switch
CN104849559A (en) * 2015-06-01 2015-08-19 绵阳市维博电子有限责任公司 Apparatus and method for testing contact resistance of conductive slip ring automatically
CN106597108A (en) * 2017-01-05 2017-04-26 上海富崇电子科技有限公司 SIR (Surface insulation resistance) testing system
CN106771624B (en) * 2017-02-20 2019-10-18 中国电子产品可靠性与环境试验研究所 Interconnection resistance on-line monitoring system and method
CN106771624A (en) * 2017-02-20 2017-05-31 中国电子产品可靠性与环境试验研究所 Interconnection resistance on-line monitoring system and method
CN107064781A (en) * 2017-06-26 2017-08-18 北方电子研究院安徽有限公司 A kind of simple resistor network automatic test approach
CN107643476A (en) * 2017-08-01 2018-01-30 河南中烟工业有限责任公司 A kind of Profibus insulated bus performance test methods based on virtual instrument technique
CN107643476B (en) * 2017-08-01 2020-05-22 河南中烟工业有限责任公司 Profibus bus insulation performance testing method based on virtual instrument technology
CN107727961A (en) * 2017-09-28 2018-02-23 国营芜湖机械厂 A kind of ejector seat electric attachments automatic Synthesis detection device and its detection method
CN107727961B (en) * 2017-09-28 2020-04-24 国营芜湖机械厂 Automatic comprehensive detection equipment and detection method for electrical accessories of ejection seat
CN107942166A (en) * 2017-11-16 2018-04-20 北京宇航系统工程研究所 A kind of fire-working article test system
CN107942140A (en) * 2017-11-20 2018-04-20 上海空间电源研究所 Detect the measuring system and detection method of satellite power supply control system interface impedance
CN108181497A (en) * 2017-12-04 2018-06-19 北京控制与电子技术研究所 A kind of measuring method of the multichannel AC voltage effective value based on cpci bus
CN108152542A (en) * 2017-12-28 2018-06-12 北京航天新风机械设备有限责任公司 A kind of CPCI type high voltage relay modules for Insulation test and continuity test

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