System and method for testing analog input/output modules of subway train

Abstract

The invention discloses a system and method for testing analog input / output modules of a subway train, and the system comprises an upper computer, an MVB controller connected with the upper computer, and an AX testing device connected with the upper computer. The MVB controller and the AX testing device are respectively connected with a to-be-tested AX module. The MVB controller is connected with the to-be-tested AX module through an MVB bus. The upper computer is used for receiving and displaying an input signal of the AX module, processing the input signal and displaying an output signal. The MVB controller is used for the data exchange between the upper computer and the to-be-tested AX module. The AX testing device is used for controlling the input signal of the to-be-tested AX module, receiving and displaying the output signal of the AX module, enabling an output current signal of the AX module to be transmitted to a current input end, detecting a current input loop of the AX module, and giving an alarm for testing results. The system and method simulate the actual conditions of the subway train, and achieve the detection of the AX module. The system is simple in structure, is convenient in operation and maintenance, is low in cost, is accurate in testing, and is low in construction cost.

Description

technical field [0001] The invention belongs to the technical field of testing devices, and in particular relates to a subway train analog input and output module testing system and a testing method thereof. Background technique [0002] The analog input and output (AX) module is the core component of the subway train diagnosis and control system, and its price is expensive. The AX module is used for conversion between analog signals and messages in the Multi-function 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 plays an extremely important role in ensuring the safe operation of trains. [0003] Since the manufacturer of the subway train does not provide the test device for the AX module, when the train undergoes overhaul work or the AX module fails, the AX module function test needs to...

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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