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Early warning method for railway rockfall

A rockfall and railway technology, applied in railway signal and safety, measuring devices, instruments, etc., can solve the problem of low measurement accuracy and achieve the effect of strong resolution, good sensitivity and simple structure

Active Publication Date: 2013-12-25
NUCTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using the above-mentioned sensor to sense the vibration of rails or sleepers, since there is a high-voltage power source forming an interference source near the rail, the above-mentioned electric sensor has the problem of low measurement accuracy in the environment of high magnetic field and high electric field

Method used

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  • Early warning method for railway rockfall
  • Early warning method for railway rockfall
  • Early warning method for railway rockfall

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Embodiment Construction

[0035] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

[0036] The present invention is based on the application of fiber gratings. First, the fiber grating vibration sensing component 10 according to the present invention will be described below.

[0037] figure 1 , figure 2 and image 3 A fiber grating vibration sensing component 10 of the present invention is shown. specifically, figure 1 is a schematic diagram of the vibration structure of the fiber grating vibration sensing component of...

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Abstract

The invention relates to an early warning method for railway rockfall. The early warning method comprises the following steps of providing a fiber bragg grating generating strain along with rail vibration; acquiring an electric signal for reflecting wavelength variation of light reflected back from the fiber bragg grating by utilizing a fiber bragg grating demodulation instrument; acquiring the wavelength variation information of the light reflected back from the fiber bragg grating based on the electric signal; determining whether an alarm is sent out or not according to the wavelength variation information.

Description

[0001] This application is a divisional application of a patent application with an application date of November 30, 2009, an application number of 200910238682.9, and an invention title of "Railway Rockfall Early Warning System and Railway Rockfall Early Warning Method" technical field [0002] The invention relates to a railway rockfall early warning system and a railway rockfall early warning method using optical fiber gratings. Background technique [0003] For the slopes along the railway line, once rockslides occur, it will have a huge impact on the railway, railway transportation production, safety management, operational efficiency and economic benefits. Eliminating or reducing the various inducing factors and degrees of rockfall and rockfall can play a preventive role to some extent, but it cannot fundamentally solve the threat posed by rockfall and rockfall to the railway along the line. [0004] Therefore, there is an urgent need for early warning of the situation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61L23/00G01H9/00
Inventor 陈志强徐惠康温海宁朱瑞龙钱鸿治舒华武
Owner NUCTECH CO LTD