The invention discloses a passive starting device and method for a railway vehicle ground safety monitoring system based on an optical fiber accelerometer, and belongs to the technical field of railway vehicle intelligent detection. The passive starting-up device comprises a plurality of rail side devices and a detection station device, and each rail side device is connected with the detection station device through an optical cable. The detection station device comprises an optical demodulator and an analysis host. The rail side device is fixed to the outer side of a steel rail and comprises an optical fiber accelerometer, a fixing mechanism and a protective cover. When a car comes, vibration of a steel rail enables the fixing mechanism to drive the optical fiber accelerometer to vibrate, then the central wavelength of a sensing grating in the optical fiber accelerometer drifts, and a changing optical signal is transmitted to the optical demodulator through an optical cable and converted into an electric signal; and the electric signal is sent to the analysis host to comprehensively quantify and analyze the amplitude so as to control the on-off action of the monitoring equipment. Integrated design and use of the passive optical sensing array are met, and assistance is provided for development of high-speed railways.

    本发明公开了一种基于光纤加速度计的铁路车辆地面安全监测系统无源开机装置及方法,属于铁路车辆智能探测技术领域。无源开机装置包括若干个轨边装置和1个探测站装置,每个轨边装置分别通过光缆与探测站装置连接。探测站装置包括光解调仪和分析主机。轨边装置固定于钢轨外侧,包括光纤加速度计、固定机构和护罩。当有来车时,钢轨的振动使固定机构带动光纤加速度计产生振动,进而使光纤加速度计中的传感光栅中心波长发生漂移,变化的光信号通过光缆传至光解调仪并转换为电信号;电信号送入分析主机,对振幅进行综合量化及分析,实现控制监测设备的开关机动作。本发明满足无源光学传感阵列的一体化设计和使用,对高速铁路的发展提供助力。


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    Title :

    Passive starting device and method for railway vehicle ground safety monitoring


    Additional title:

    一种铁路车辆地面安全监测的无源开机装置及方法


    Contributors:
    SUN CHAO (author) / DONG SHUO (author) / SHI XIAOTONG (author) / CHEN XI (author) / MIAO XIN (author) / YE LIFENG (author) / ZHENG MIN (author) / WU SHICHUN (author) / JIA HUA (author) / ZHANG RENQIANG (author)

    Publication date :

    2024-08-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



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