System and method for testing locomotive general-purpose circuit board function

A general-purpose circuit and functional testing technology, applied in the direction of electronic circuit testing, etc., can solve the problems of inability to meet the requirements of dual 96-pin and 96+48-pin interfaces of locomotive circuit boards, difficulty in precision measurement, and inability to hardware self-test, etc. Low, high precision, fast effect

Inactive Publication Date: 2008-10-08
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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AI Technical Summary

Problems solved by technology

The scale of its relay matrix is ​​16X48 structure, and the power supply can only provide 5-way power supply, which cannot meet the needs of dual 96-core and 96+48-core interfaces of the locomotive circuit board
In addition, the test bench does not have any self-calibration program, and cannot self-test the hardware of the entire system
Since the road maintenance machinery test system uses a self-made board to provide the signal source, there are certain difficulties in measuring the accuracy of the entire system. The accuracy of the entire system also depends on the industrial computer used.

Method used

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  • System and method for testing locomotive general-purpose circuit board function
  • System and method for testing locomotive general-purpose circuit board function

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Embodiment Construction

[0016] The block diagram of the whole test system is as follows: figure 1 As shown: the whole test system adopts the control mode of GPIB+PXI mixed bus, and the system includes industrial computer 1, measuring desktop instrument 2-11, PXI system 12-14 and adapter interface system 18-25. The industrial computer controls all test desktop instruments through the GPIB bus, including oscilloscope 2, multimeter 3, first signal power supply 4, second signal power supply 5, third signal power supply 6, fourth signal power supply 7, and first signal generator 8 , the second signal generator 9 , the fifth signal power source 10 , and the power supply power source 11 . The industrial computer controls all the boards in the PXI chassis through the PXI bus, including the matrix switch card 12, the digital input and output card 13 and the general switch card 14.

[0017] The oscilloscope 2 collects the waveform of the circuit board under test under the control of the industrial computer 1;...

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Abstract

The invention relates to locomotive general-purpose circuit board functional test system and method. According to the multiple electric pluggable unit kinds feature of the locomotive, the invention adopts an PXI +GPIB mixing bus mode, which uses the GPIB bus to control all the tested desk type apparatuses and uses the PXI bus to control a matrix switch card, a digital in-out card and a general-purpose switch card, the matrix switch card, the digital in-out card and the general-purpose switch card are connected with external interfaces, while the external interfaces are connected with different test adapters. The invention adopts a method which combines using the measurement desk type apparatus to execute authoritative metering and using the corresponding matrix switch and general-purpose switch to execute self checking, provides a locomotive electric plug-in component automatization test system and method with high testing accuracy and high expandability.

Description

technical field [0001] The invention relates to a system and method for testing the function of a universal circuit board (electronic plug-in) of a locomotive. Aiming at the characteristics of the electronic plug-in of a locomotive, that is, there are many types of circuit boards and complex debugging methods, it provides a high-precision detection system with a good human-computer interaction interface. And an intelligent locomotive universal circuit board function testing system and method. Background technique [0002] At present, the locomotive circuit board test systems have certain limitations. For example, the function test can only be performed on the circuit board of a certain type of electric locomotive, and the test range is limited. The measurement accuracy of these test systems is also very limited. In addition, because the protection mechanisms of these test systems are not perfect, the test systems are easily damaged by faulty circuit boards, and the current d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/28
Inventor 易卫华罗文涛陈志漫李涛葛全水
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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