Locomotive signal failure diagnostic instrument

A technology of fault diagnosis instrument and locomotive signal, applied in the field of fault diagnosis instrument, can solve the problems of high maintenance cost, no detection guidance, difficult detection, etc., and achieve the effects of accurate fault location, intuitive detection results and good versatility

Inactive Publication Date: 2004-09-15
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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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 circui

Method used

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  • Locomotive signal failure diagnostic instrument
  • Locomotive signal failure diagnostic instrument
  • Locomotive signal failure diagnostic instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The composition of the locomotive signal fault diagnostic instrument is as follows, please refer to figure 1 Circuit schematic diagram of locomotive signal fault diagnosis instrument, CPU system is composed of central processing unit, memory, reset circuit, crystal oscillator circuit and bus drive circuit. This part of the circuit constitutes the basic environment for the system to work. The diagnostic instrument consists of CPU system connected with the following modules:

[0039] (1) Asynchronous serial port: The diagnostic instrument drives the display device through the asynchronous serial port. The display device is a tool for the diagnostic instrument to express various information, and the displayed content includes the diagnostic interface, diagnostic steps, diagnostic results, and prompt information.

[0040] (2) Keyboard processing: The keyboard processing circuit detects the key state in real time, and when a key operation occurs, it sends an interrupt to t...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): B61L23/00
Inventor 邱宽民张民王永和赵胜凯
Owner BEIJING JIAOTONG UNIV
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