光纤传感器FBG和BOTDR应用于结构监测的若干比较研究

对建筑结构进行健康监测,可以防止和避免灾害的发生。传感器的选择和使用是进行结构监测时首先要考虑的问题。光纤传感器是一种新型的传感器,因种类不同在性能方面也相差较大。FBG(FiberBraggGating,光纤Bragg光栅)和BOTDR(BrillouinOpticalTimeDomainReflectometry,布里渊光时域反射计)是近些年来发展比较快的光纤传感器,本文介绍了这两种光纤传感器,并着重从两者传感的基本原理、传感系统组成、温度补偿研究和性能优劣等方面进行了详细的比较,得出了各自作为结构监测传感器的优缺点,为今后的监测选用提供了依据,使应用两者时能够做到扬长避短。

Research on Some Aspects of Optical Fiber Sensors FBG and BOTDR Applied in Structural Health Monitoring

The structural health moniting can prevent and avoid disaster. The choice and usage of sensors is the first problem of consideration before moniting the construction. The optical fiber sensors are a new kind of sensors, which include a lot of categories, and the functions of them are also different. People proceeded a lot of researches in the aspect, and found out many important functions of the optical fiber sensors. The FBG and BOTDR are optical fiber sensors which are rapidly developed in recent years .This paper introduces FBG and BOTDR from the aspects of basic principle, components of sensor system, temperature compensation, excellent and bad capabilities. Draw a conclusion of advantage and disadvantage of them applied as monitoring sensors. Give some advices to the application of them in the future.