The invention belongs to the field of train control, and provides a trackside non-electric sensor axle counting method, system and equipment, a fiber bragg grating sensor is connected with demodulation equipment through a single fiber, and an initial electric signal of the sensor is collected; calibrating a fiber grating edge filter to determine a fitting function, and determining the wavelength of the initial electric signal after demodulation according to the fitting function; performing temperature compensation processing on the demodulated wavelength; and axle counting and direction judgment are completed according to the wavelength variation after the temperature change influence is eliminated. High-speed demodulation can be realized through the whole fiber grating sensor by only needing single-fiber demodulation connection, the construction workload is reduced, trackside cable resources are saved and the system cost is reduced based on a single-fiber connection mode, and better adaptability to sudden change conditions occurring in wavelength demodulation is achieved by providing a new temperature compensation algorithm; the invention further provides a calibration process of fiber bragg grating edge filtering demodulation, and rapid and accurate demodulation of the wavelength of the fiber bragg grating is achieved.
本发明属于列车控制领域,提出一种轨旁无电传感器计轴方法、系统和设备,将光纤光栅传感器单纤连接解调设备,采集传感器初始电信号;标定光纤光栅边沿滤波器确定拟合函数,根据拟合函数确定初始电信号解调后的波长;对解调后的波长进行温度补偿处理;根据消除温度变化影响后的波长变化量完成计轴和判向。通过整个光纤光栅传感器只需单纤解调连接即可实现高速解调,基于单纤连接的方式减少了施工工作量,节约轨旁线缆资源,降低了系统成本,通过提供新的温度补偿算法,对于波长解调中出现的突变情况有更好的适应性;还提供了光纤光栅边沿滤波解调的标定过程,实现光纤光栅波长的快速精准解调。
Trackside non-electric sensor axle counting method, system and equipment
一种轨旁无电传感器计轴方法、系统和设备
2024-11-29
Patent
Electronic Resource
Chinese
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
Trackside equipment control system and trackside equipment control method
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