Early warning method for railway rockfall

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...

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Bibliographic Details
Main Authors ZHU RUILONG, SHU HUAWU, CHEN ZHIQIANG, XU HUIKANG, QIAN HONGZHI, WEN HAINING
Format Patent
LanguageChinese
English
Published 25.12.2013
Subjects
ENSURING THE SAFETY OF RAILWAY TRAFFIC
GUIDING RAILWAY TRAFFIC
MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES
MEASURING
PERFORMING OPERATIONS
PHYSICS
RAILWAYS
TESTING
TRANSPORTING
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Summary: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.
Bibliography:Application Number: CN20121568266