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Relay reliability service life experiment system based on dynamic characteristic

A technology of life test and dynamic characteristics, applied in the direction of circuit breaker test, etc., can solve the problems of long cycle, low experiment efficiency, high cost, etc., and achieve the effect of strong combination, fast response speed and complete data analysis

Inactive Publication Date: 2009-01-14
HARBIN INST OF TECH
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Problems solved by technology

[0005] The purpose of the present invention is to propose a reliability life test system for relays based on dynamic characteristics on the basis of certain theoretical research on accelerated life in view of the shortcomings of low test efficiency, long cycle, high cost, and destructiveness in current life test devices.

Method used

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  • Relay reliability service life experiment system based on dynamic characteristic
  • Relay reliability service life experiment system based on dynamic characteristic

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing.

[0016] First, the user selects the model of the current test relay, the size of the driving voltage, the number of test samples, and the acceleration factor and acceleration model for the accelerated life test in the host computer unit. The upper computer unit transmits these parameter setting commands to the main control unit via USB.

[0017] After the main control unit parses and analyzes the command, it transmits the control command to each data acquisition and processing unit through the CAN bus, so that it can be combined to meet the requirements of different types and different test objects. For example, if it is necessary to detect 1 set of coils and 10 sets of changeover contacts, the system can detect 1 relay at the same time. At this time, the main control unit makes all the data acquisition and processing units adopt a unified coil current input signal to ensure...

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Abstract

The invention provides a relay reliability service-life test system based on dynamic characteristics on the basis of a certain acceleration service-life theory research and aiming at solving the defects of the existing service-life test apparatuses that the test efficiency is low; the test period is long and the cost is high and damages cannot be avoided, etc. The system can take the action frequency and load of the relay as the environment variables of the relay acceleration service-life so as to realize a non-damage and effective test technique. The system at least can simultaneously test 10 groups of conversion contacts and 10 groups of coils totally and is provided with the flexible expansibility; a sampling parameter resolution is 1Mu s; an action frequency can be set to be equal to or less than 120 times / min. The system comprises a main control unit, a relay driving unit, a data collecting and processing unit and an upper computer processing unit.

Description

(1) Technical field [0001] The invention relates to electronic detection technology, specifically a relay reliability life test system based on dynamic characteristics. (2) Background technology [0002] Relays are used in modern electronic equipment and are an indispensable part of industrial automation and national defense modernization systems. Its normal working life often determines the working life of the overall system. The reliability life test of the relay can obtain the parameter characteristics of its reliability, so as to screen, identify and improve the quality of the product. [0003] At present, there are certain standards for the life test of relays, such as GJB65B-99, GJB1042A-2002, etc. However, it is limited to the ordinary life experiment test of the relay, the test time is long, it is a destructive experiment, and the efficiency is low. At the same time, the feature quantity of the test is small, which cannot fully express the life characteristics of ...

Claims

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Application Information

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IPC IPC(8): G01R31/327
Inventor 翟国富任立余琼叶雪荣张宾瑞
Owner HARBIN INST OF TECH
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