PLC detection system and method of Railway carriage control chamber

Abstract

The invention relates to a PLC detection system conducting performance detection on PLC system of an electrical control cabinet in railway carriage and a detection method. The PLC detection system comprises a host computer and a detected PLC system, wherein communication between the host computer and the detected PLC system is conducted. The PLC detection system also comprises a temperature signal detection unit, an analog input channel detection unit, a digital quantity output detection unit, and a digital quantity input detection unit, which can respectively achieve the automatic detection of the digital quantity input end, the temperature input end, the analog input end and the digital quantity output end of the detected PLC system. When the system of the invention is adopted for detection, the program of the PLC system is not required for updating, and no complicated work condition is required to be simulated, and thereby rapid, efficient and accurate detection can be realized.

Description

technical field [0001] The invention belongs to the technical field of detection, and relates to a PLC detection system and method for performance detection of a PLC system in a four-in-one conghe electric control cabinet of a railway passenger car. Background technique [0002] The maintenance means of PLC in the four-in-one comprehensive electrical control cabinet of passenger trains has gone through several stages of development according to different technologies. The first stage is mainly to return to the factory for repair. The original manufacturer solves it by re-flashing the program. For major railway main engine factories, the repair cost is high and the cycle is long. The second stage is a detection system with a program. The simulated working conditions are complex, and different working conditions have a great impact on the test results. The accuracy of this detection system is not enough. The entire test cycle is about 4 hours, and the efficiency of the long te...

AI Technical Summary

Problems solved by technology

The first stage is mainly to return to the factory for repair. The original manufacturer solves it by re-flashing the program. For major railway main engine factories, the repair cost is high and the cycle is long.

The second stage is a detection system with a program. The simulated working conditions are complex, and different working conditions have a great impact on the test results. The accuracy of this detection system is not enough. The entire test cycle is about 4 hours, and the efficiency of the long test cycle is not high.

When the PLC program of the passenger train is updated, the test software must be updated, otherwise it cannot be used, and the compatibility of the test software is poor

At present, there is no efficient, convenient, and high-accuracy PLC detection system applied to the four-in-one comprehensive electrical control cabinet of railway passenger cars

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