The invention discloses a rail strain measurement method based on a distributed optical fiber sensor. The rail strain measurement method comprises the steps that S1, a strain detector emits detectionlight of a preset frequency; S2, a distributed optical fiber sensor receives the detection light with the preset frequency emitted by the strain detector in the step S1 and outputs an offset signal carrying the strain information of a to-be-detected rail; S3, the strain detector receives the offset signal output in the step S2, and transmits the offset signal to a monitoring platform through an NB-IOT module; S4, the monitoring platform decodes the received information to calculate the strain information of the to-be-detected rail; and S5, a result calculated in the step S4 is compared with apreset to-be-detected rail dependent variable threshold value to determine whether to stop monitoring and give an alarm so as to realize accurate rail strain detection and solve the technical problemsthat a strain detection method adopted in the prior art is easily influenced by the environment, has relatively large errors and the like.

    本发明公开了一种基于分布式光纤传感器的轨道应变测量方法,包括步骤:S1:应变检测仪发出预设频率的探测光;S2:分布式光纤传感器接收步骤S1中所述应变检测仪发出的预设频率的探测光并输出携带所述待测轨道应变信息的偏移信号;S3:应变检测仪接收所述步骤S2中输出的偏移信号,并经NB‑IOT模块传输至监控平台;S4:所述监控平台对接收到的信息进行解码,以计算出该待测轨道应变信息;S5:将步骤S4中计算的结果和预设的该待测轨道应变量阈值进行比较,以决定是否停止监测并报警,从而实现了轨道应变精准检测,解决现有技术采用的应变检测方法存在易受环境影响、且误差较大等技术问题。


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    Title :

    Rail strain measurement method and system based on distributed optical fiber sensor


    Additional title:

    一种基于分布式光纤传感器的轨道应变测量方法及系统


    Contributors:
    YANG MINGLAI (author) / YI CHENGDONG (author) / MA QIANG (author) / BIAN TING (author) / CHEN YULEI (author)

    Publication date :

    2020-11-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC




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