基于环形光纤光栅应变传感器的管道泄漏监测研究

The research of pipeline leakage monitoring which based on annular fiber grating sensors

为了获取一种更为经济有效的管道泄漏监测方法。本文在阐述环形光纤光栅应变传感器健康监测及定位原理基础上,实验模拟管道泄漏,采用环形光纤光栅传感器对相应工况进行实时监测。应用SM-130解调仪,结合Savitzky-Golay法对监测数据进行分析,得出环形光纤光栅传感器不仅能对管道泄漏反应迅速,而且能减少管道起始内压对监测结果的影响。整个实验中环形光纤光栅应变传感器对于管道的泄漏监测表现出灵敏度高、响应时间快、误报率低等特性,且能实时连续监测,是一种良好的泄漏监测方法。

Inorder to obtain a more economical and effective method of pipeline leakage monitoring.This paper described the principle of health monitoring and positioning of annular fiber grating sensors, Simulated the pipeline leakage and used the annular fiber grating sensors to real-time monitoring in corresponding working condition. The detected data is analyzed with the demodulation of SM-130 and combined with Savitzky-Golay.The monitoring data not only proved that the annular fiber grating sensors respond quickly to piper line leakage but also reduce the impact from internal pressure. During the entire process of the experiment, the annual fiber grating sensors showed the characteristics that highly sensitive, quick response, little misinformation and continuous realtime monitoring. It is a pretty good way of leak detection.