Rail vehicle logic control circuit diagnosis system and diagnosis method

Abstract

The present invention relates to a rail vehicle logic control circuit diagnosis system and diagnosis method, which include a rail vehicle logic control circuit and various electrical components arranged on the logic control circuit, and also include a plurality of devices for recording each point of the logic control circuit A counter for the number of voltage fluctuations, one counter is respectively set on the high potential side and the low potential side of the electrical component to be monitored, and the pulse input terminal of the counter is connected to the line of the circuit. The present invention can be realized only through a plurality of counters, has a simple structure, is small and exquisite, is easy to implement, and can be monitored simultaneously with the operation of the vehicle, and the diagnostic system has its own power supply without external power lines, which is conducive to ensuring the high-speed and safe driving of rail vehicles.

Description

technical field [0001] The invention relates to a diagnostic system, in particular to a diagnostic system and a diagnostic method for a rail vehicle logic control circuit. Background technique [0002] At present, the speed of rail vehicles running on main railways in China has reached 380 kilometers per hour and above, so more stringent design and performance requirements are put forward for vehicle power and control systems. [0003] In the electrical control system of existing high-speed rail vehicles, a certain type of fault in the 100V logic control circuit will occasionally appear, but the fault cannot be reproduced when the investigation is carried out afterwards, and the fault will reappear when the vehicle is in operation. Such repetitions bring a lot of inconvenience to troubleshooting and processing, and equipment debugging, and there is a lack of first-hand information on the causes of existing faults. [0004] The faults in the above logic control circuit may b...

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Problems solved by technology

[0003] In the electrical control system of the existing high-speed rail vehicles, a certain type of fault in the 100V logic control circuit will occasionally appear, but the fault cannot be reproduced when the investigation is carried out afterwards, and the fault will reappear when the vehicle is in operation. Repeatedly like this brings a lot of inconvenience to troubleshooting and processing, equipment debugging, lack of first-hand information on the cause of existing faults

[0004] The faults in the above logic control circuit may be caused by interference, poor electrical contact, decreased stability of electrical components, damaged cables, poor insulation, etc.

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