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Signal synchronous assignment method and device for automatic testing of rail transit vehicles

A technology for rail transit vehicles and automated testing, applied in electrical testing/monitoring, testing/monitoring control systems, general control systems, etc., to solve problems such as the inability to meet the automated testing requirements of DCU equipment, unreliable automated test results, and out-of-synch problems. , to achieve the effect of low cost, improved stability and reliability, and reduced synchronization difficulty

Active Publication Date: 2020-03-17
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] However, due to the correlation between multiple test signals involved in automated testing, sporadic asynchronous phenomena occur in the existing automated testing system during the signal assignment process, which will lead to occasional errors, resulting in inconsistent results of automated testing. Unreliable and unable to meet the automated testing requirements for DCU equipment

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  • Signal synchronous assignment method and device for automatic testing of rail transit vehicles
  • Signal synchronous assignment method and device for automatic testing of rail transit vehicles
  • Signal synchronous assignment method and device for automatic testing of rail transit vehicles

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0030] In the process of automated testing of DCU equipment, in view of the occasional errors in the existing automated test system, the R&D personnel conducted a lot of research and analysis, and determined that the reason for the occasional errors is that the automated test module sends test signals and control signals synchronously to When communicating with the interface module, an assignment error occurs due to inaccurate synchronization. Test signals include index signals and value signals. Through the analysis, it is found that in the automated test system, the function of the communication interface module is very critical, which affects the correctness and stability of the signal assignment in the entire automated test process, and determines the reliab...

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Abstract

The invention discloses a signal synchronous assignment method and device for automatically testing rail transit vehicles. The method comprises the following steps: S1, generating a testing signal and a control signal at a first end, wherein the testing signal comprises at least two paths of signals needing to be synchronously sent; after packaging and sealing the testing signal by the first terminal, synchronously sending the testing signal and the control signal to a second end; S2, restoring each path of signal in the packaged and sealed testing signal by the second end through encoding, and outputting each path of signal according to the control signal. The signal synchronous assignment method and device have the advantages of eliminating an assignment error which is possibly caused by a synchronization problem in a synchronous assignment process of a plurality of variables, and improving the stability and reliability of testing signal assignment and the like.

Description

technical field [0001] The invention relates to the field of rail transit testing, in particular to a signal synchronous assignment method and device for rail transit vehicle automatic testing. Background technique [0002] With the rapid development of the rail transit field, the functions of rail transit products are becoming more and more complex, and the reliability requirements for rail transit products are also getting higher and higher. As one of the key equipment, the Drive Control Unit (DCU for short, a controller used in traction converters in the field of rail transit) in rail transit vehicle control equipment is known as the "heart" of urban rail vehicles. . When implementing precise control on the traction converter, the logic control function of the DCU is very important. It undertakes the important functions of traction system management and communication, and directly affects the function, safety and efficiency of the traction converter. Therefore, software...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0256
Inventor 蒋明睿段静李宁费巧玲陈明奎郭策刘鹏翔贺晓梅李想利
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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