The invention provides a high-speed rail temperature detection method based on optical fiber distributed monitoring, which relates to the technical field of rail monitoring. The method comprises the following steps of S1, fixedly distributing optical fibers used for monitoring a rail to the bottom of the rail to form monitoring optical fibers, and connecting the monitoring optical fibers with optical cables laid above the rail, S2, installing multiple sets of ultrasonic transmitting probes and ultrasonic receiving probes on the outer side of the rail at equal intervals, and S3, emitting pulsedlight signals through a laser, and coupling the pulsed light signals through a directional coupler. The invention discloses a high-speed rail temperature detection method based on optical fiber distributed monitoring. Raman scattering of the optical fibers is utilized to comprehensively monitor the temperature of the high-speed rail, manpower and cost are saved, after the monitored temperature isobtained, ultrasonic waves are utilized to monitor the temperature stress of the high-speed rail, safety problems are avoided, and the safety of the high-speed rail in use is improved.

    本发明提供一种基于光纤分布式监测的高铁铁轨温度检测方法,涉及铁轨监测技术领域,包括以下步骤:S1、将用于监测铁轨的光纤固定分布到铁轨底部,形成监测光纤,与轨道上方铺设的光缆连接,S2、在轨道外侧等距安装多组超声波发射探头和超声波接收探头,S3、由激光器发出脉冲光信号,脉冲信号经过定向耦合器进行耦合处理。该基于光纤分布式监测的高铁铁轨温度检测方法,利用光纤的拉曼散射,可以全面的对高铁铁轨进行温度的监测,节省人力和成本,能够在取得监测温度后,利用超声波,监测高铁铁轨温度应力,避免引起安全问题,提升了高铁铁轨使用时的安全性。


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    Title :

    High-speed rail temperature detection method based on optical fiber distributed monitoring


    Additional title:

    一种基于光纤分布式监测的高铁铁轨温度检测方法


    Contributors:
    ZHANG XUPING (author) / WANG SU (author) / LI MI (author)

    Publication date :

    2020-10-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01K MEASURING TEMPERATURE , Messen der Temperatur / B61K Andere Hilfseinrichtungen für Eisenbahnen , OTHER AUXILIARY EQUIPMENT FOR RAILWAYS / G01L Messen von Kraft, mechanischer Spannung, Drehmoment, Arbeit, mechanischer Leistung, mechanischem Wirkungsgrad oder des Drucks von Fluiden , MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE



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