FBG传感技术在工程结构监测中的应用

Application of FBG sensing technology in structure monitoring

FBG传感技术代表了一种先进的技术,具有传统技术无可比拟的优势。分析了FBG传感器用于土木工程检测的二个关键技术问题,研制了二种FBG传感器,并进行了工程试验。试验结果表明:FBG传感器比电检测系统传感器具有更高准确度,能实现绝对数值测量,抗干扰能力强,结构简单,长期稳定性高,实现对工程结构的实时、在线监测。

Fiber Bragg grating (FBG) sensing technology,as an a dvanced technology in recent years,has a super advantage compared to tradition technology.Two key techniques of FBG sensor used for civil engineering are analy zed afterwards.Two kinds of fiber optic Bragg sensors are developed to do engine ering experiment.The result shown that the FBG sensors have a high measurement precision lever,good antiinterference ability and longtern stability,simple structure and it can realize a realtime and online monitoring.