Test device and test method for simulating train communication cable fault
A technology for communication cables and simulated trains, which can be used in fault locations, electrical connection tests, and fault detection according to conductor types, etc. It can solve the problems of inability to simulate poor contact of a single wire core, limited testing methods, and high labor occupancy rate. The effect of high test efficiency, low cost and great quality improvement
Pending Publication Date: 2021-05-28
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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Problems solved by technology
[0003] At present, there are limited testing methods for fault simulation of train network cables. The commonly used method is manual testing: manually hot-swapping train communication cables, that is, manually pulling out / inserting its communication connection cables during the operation of train network equipment , which simulates the disconnection and restoration of the cable connection, but cannot simulate the poor contact of a single core
Moreover, the manual test scheme can only be completed for a limited number of tens of times, and it takes about 1 second for a single cable disconnection and recovery time during the manual test. However, the manual test method has a high labor occupancy rate and the test efficiency is too low
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0023] Such as figure 1 and figure 2 As shown, the test equipment for simulating the failure of the train communication cable 6 in this embodiment includes a control unit 1 and a cable connection controller 4; the cable connection controller 4 includes a data conversion module 401, a main control module 402 and a relay module 403 The communication cable 6 to be tested is connected with the relay module 403; the data conversion module 401 is connected with the control unit 1 and the main control module 402 respectively, and is used to realize the data conversion between the control unit 1 and the main control module 402; the main control module 402 It is connected with the relay module 403 and is used for on-off control of the relay module 403 according to the control instruction of the control unit 1 to simulate loose connection of cable join...
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The invention discloses a test device for simulating train communication cable faults. The test device comprises a control unit and a cable connection controller; the cable connection controller comprises a data conversion module, a main control module and a relay module; the data conversion module is used for realizing data conversion between the control unit and the main control module; and the main control module is used for performing on-off control on the relay module according to a control instruction of the control unit so as to simulate cable joint connection loosening or cable core connection loosening or cable core fracture. The invention also discloses a test method, which comprises the following steps that: S01, the control unit sends a control instruction to the data conversion module, and the data conversion module converts the control instruction into data which can be received by the main control module; and S02, the main control module controls on-off of each relay in the relay module according to the converted control instruction so as to simulate cable joint connection loosening or cable core connection loosening or cable core fracture. The testing device and testing method have the advantages of being simple in structure, high in testing efficiency, low in cost and the like.
Description
technical field [0001] The invention mainly relates to the technical field of communication cable testing, in particular to a testing device and a testing method for simulating train communication cable faults. Background technique [0002] At present, the train network system mainly has several communication methods such as WTB / MVB / Ethernet, and each communication method has a specific cable as the transmission medium. When the on-site train communication cable is loosely connected or the cable communication core is damaged, it may cause abnormalities in the train communication system. If fault tolerance is not handled in advance, the impact may be serious. Therefore, we need the laboratory to conduct simulation tests for such scenarios in advance to ensure that the train network communication system is in a controllable state when such abnormalities occur. [0003] At present, there are limited testing methods for fault simulation of train network cables. The commonly use...
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IPC IPC(8): G01R31/08G01R31/58G01R31/69
CPCG01R31/083
Inventor 刘中华向芝青罗钟迤陈勃刘布麒周志飞陈超群焦玮琦贺昀轩钟涛
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST