A subway train analog input and output module test system and test method thereof

Abstract

The invention discloses a subway train analog input and output module testing system and a method thereof, comprising a host computer, an MVB controller connected to the host computer, and an AX testing device. The MVB controller and the AX testing device are respectively connected to the The AX module is connected, and the MVB controller is connected with the AX module to be tested through the MVB bus; the host computer is used to receive and display the input signal of the AX module and process the input signal, and display the output signal; the MVB controller , for data exchange between the host computer and the AX module to be tested; the AX test device is used to control the input signal of the AX module to be tested, receive and display the output signal of the AX module, and transmit the output current signal of the AX module To its current input terminal, detect the current input loop of the AX module, and give an alarm to the test result. The invention simulates the actual condition of the subway train, detects the AX module, has the advantages of simple structure, convenient operation and maintenance, low cost, accurate test and low manufacturing cost.

Description

Technical field [0001] The invention belongs to the technical field of test devices, and specifically relates to a test system and a test method for a subway train analog input and output module. Background technique [0002] The analog input output (AX) module is the core component of the subway train diagnosis and control system, and it is expensive. The AX module is used to convert between analog signals and messages in the multifunctional vehicle bus (MVB). The analog signals involved, such as automatic driving reference value, train speed signal, main air cylinder pressure, etc. The AX module is the main component of subway train simulation information collection, and it plays an extremely important role in ensuring the safe operation of the train. [0003] As the subway train manufacturer does not provide a test device for the AX module, when the train is undergoing overhaul operations or the AX module fails, the AX module function needs to be tested. The AX module must be ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems in the prior art that the analog input and output modules need to be mounted on a vehicle to perform functional detection, the procedures are cumbersome, the efficiency is low, and the loading detection is interfered by the state of the train itself, which affects the detection results. The present invention provides an accurate and convenient test. Independent subway train analog input and output module test system and test method thereof

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