A system and method for on-line detection of train faults

A detection system and technology for faults, applied in radio wave measurement systems, satellite radio beacon positioning systems, railway vehicle testing, etc., can solve the problems of manual investigation, which cannot be checked in real time around the clock, long detection cycle of wheel sensors, and inability to alarm in time. Achieve the effect of flexible layout, no detection blind area, and simple structure

Active Publication Date: 2022-03-15
TAIYUAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

However, traditional detection methods still have certain limitations, such as manual inspections that cannot be checked in real time around the clock, wheel sensor detection cycles that are long, and timely alarms, etc.

Method used

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  • A system and method for on-line detection of train faults
  • A system and method for on-line detection of train faults

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Embodiment Construction

[0020] In order to have a clearer understanding of the technical features, objects and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0021] see figure 1 , the present invention provides an on-line detection system for train faults, including:

[0022] Narrow linewidth laser 1, first fiber coupler 3, acousto-optic modulator 4, wavelength division multiplexer 6, circulator 7, optical cable connection box 8, optical cable 9, pigtail terminal box 10, second optical fiber coupler 11 , balanced photodetector 12, band-pass filter 13, sine wave generator 14, quadrature demodulator 15, low-pass filter 16, amplitude operator 17, three-axis accelerometer 18, first signal modulator 19 , the first wireless signal generator 20, the high-speed analog-to-digital conversion module 21, the microcontroller 22, the global positioning system 23, the first data converter 24, the se...

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Abstract

The invention relates to a system and method for on-line detection of train faults. Using a distributed optical fiber vibration sensing system, real-time detection and positioning of train fault points can be carried out. The system locates the cycle and identifies faults, and uses the Kalman filter module to filter out the noise generated during the operation of the faulty axle; designs the weighted fusion algorithm of the least square method to complete the fusion of the three types of signals, and realizes the train operation through multi-dimensional modeling analysis The system has the advantages of flexible layout, simple structure, anti-electromagnetic interference, and no detection blind area.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, and more particularly, to a system and method for on-line detection of train faults. Background technique [0002] As the country's major infrastructure and popular means of transportation, high-speed trains play an important role in ensuring the normal and safe operation of the country's economic development and people's travel safety. After long-term operation of high-speed trains, the bottom axles are prone to failure, which can easily lead to safety accidents. For this reason, the high-speed railway management department generally uses manual inspection, wheel sensor detection and other means to find faulty axles. However, the traditional detection methods still have certain limitations, such as manual inspection cannot be carried out in real time around the clock, the wheel sensor detection cycle is long, and the alarm cannot be timely. In this context, the continuously develo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/045G01M17/08G01C21/16G01S19/47G01S19/12
CPCG01M13/045G01M17/08G01C21/165G01S19/47G01S19/12
Inventor 王宇马诗洋靳宝全高妍张红娟白清刘昕
Owner TAIYUAN UNIV OF TECH
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