光纤传感技术用于铁轨温度监测的研究

Research of Rail Structure Temperature Monitor with Optical Fiber Sensors

对光纤喇曼散射技术用于铁轨温度监测的方法进行了理论和实验研究。采用大功率半导体脉冲激光器为泵浦光源和背向散射法对光纤中的背向喇曼散射(斯托克斯散射和反斯托克斯散射)进行测量。缠绕式光纤传感器模式中采用结果表明,该方法对采用传统方法难以实现的铁轨温度进行监测是可行的,且具有结构简单、成本低廉以及与结构兼容性好的优点。

：The research of railway structure temperature inspecting system based on optical fiber back-Raman scatter is stated. Using high-power semiconductor laser launcher as pump source, Raman back-scatter, Stocks and anti-Stocks scatter is measured, intertwisting sensor structure is used in the experiment. Experimental results show the system is much cheaper,simple and easier to monitor the temperature with rail structure which is difficult by traditional method.