Locomotive signal failure diagnostic instrument

Abstract

The invention relates to a locomotive signal failure diagnosis apparatus, its CPU system composed of CPU, memory, reset circuit, crystal vibration circuit and bus drive circuit. It is composed by its CPU system linked with the following modules: asynchronous serial interface module, keyboard processing module, simulation head module, A / D detecting module linked to A / D interface of the tested board, bus analog circuit module, isolating input module adopting photoelectric coupled circuit, crystal detecting module composed of testing control, data register and frequency counter, and power supply monitoring module as well as probe circuit module which is linked with a testing probe. Its operation is simple and convenient, and its detecting result is intuitionistic. It controls the tested board working by the program, so able to quickly obtain plenty of overall testing data, which cooperates with the testing pen, further determining the failure point.

Description

technical field [0001] The invention relates to a fault diagnosis instrument, in particular to a locomotive signal fault diagnosis instrument. [0002] The locomotive signal is a kind of railway signal equipment, and it is one of the necessary signal equipment for locomotives. The function of the locomotive signal is to receive and interpret the information used to command the train operation, and provide it to the driver and related equipment for monitoring and controlling the train operation, so as to ensure the safety and efficiency of the train operation. The reliable operation of the locomotive signal and the timely maintenance after the failure are of great significance. [0003] "Locomotive Signal Fault Diagnosis Instrument" (hereinafter referred to as "diagnostic instrument") is the first domestic instrument for automatic fault diagnosis of locomotive signaling equipment. It can fully and automatically detect the locomotive signal circuit board, determine the working...

AI Technical Summary

Problems solved by technology

[0006] (1) Expensive, high cost of use and maintenance

[0007] (2) High requirements for application personnel

It is necessary for professionals to design inspection procedures and design processing inspection templates, which cannot be completed by ordinary users

[0008] (3) The test results are not intuitive and there is no test guidance

[0009] (4) There are limitations

[0012] (2) It is difficult to detect

For circuits running in real time, it is difficult to measure the working status of each part, and it is difficult to locate faults

[0013] (3) Inefficiency

It takes a lot of time to conduct a comprehensive inspection of the circuit board by manual methods, and it is difficult to avoid human errors

[0014] (4) High maintenance cost

Manual inspection must carry out tentative device replacement, which will inevitably cause waste

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