基于光纤光栅的输油管道安全监测系统

针对穿插于滑坡体内的输油管道，提出一种基于光纤光栅传感的管道安全监测系统。系统由光开关和光纤光栅解调仪共同完成数据的自动测量和存储，并利用GPRS方式进行数据传输。利用已知管道上三点应力求最大应力的方法，选用自行研制的光纤光栅传感器监测管体应力。该传感器除了具有抗电磁干扰、耐腐蚀、稳定性好的优点，还可以实现温度补偿，不但排除了温度对测量结果的影响，还可以测量环境温度。经实际应用证明：该监测系统可实现实时监测，性能稳定。

Oil pipeline security monitoring system based on fiber Bragg grating sensor

This paper proposes a security monitoring system based on fiber Bragg grating sensors for pipelines in landslide area and presents the method on how to obtain maximum stress if stress values of three points on the pipeline are available. Based upon this method, this system applies FBG sensors developed by ourselves to monitor stress of the pipeline. With the good immunity to electromagnetic interference, corrosion resistance and good stability, such FBG sensors can realize temperature compensation, eliminate impact of temperature on measuring results and measure ambient temperature. This system implements automatic measurement and data storage by optical switch and optical sensing interrogator and transfers data by GPRS. According to field results, this system is capable of realizing real time monitoring and stable in performance.