摘要
目前在桥梁、钢结构等表面应力监测领域中,光纤光栅因具有抗电磁干扰能力强、灵敏度高、环境适应能力强、使用寿命长等优点,已经成为一种新的先进监测、检测手段,但FBG波长随温度变化而产生的漂移往往严重影响监测系统的性能,因此需要对FBG进行温度补偿。介绍了一种新型的FBG传感器并结合具体的工程项目,论述了其温度低敏技术能精确地剔除温度对应变的影响,实现结构物的长期健康监测。
Currently,Fiber Bragg Grating which has become a new way of monitoring and detecting has the feature of removing electromagnetic interference,high sensitivity,environmental adaptability,long life in the filed of strain monitoring of bridge,steel structure,etc.But the FBG wavelength shifts with temperature changing has greatly affected the property of monitoring systems.It is necessary to using FBG temperature compensate technology.Combining a certain project of steel structure,this article referred to a new FBG senor and described its insensitive temperature technology can accurately strike off the affection of temperature.It has achieved the aim of long-sterm health monitoring.
出处
《岩土工程技术》
2015年第1期51-54,共4页
Geotechnical Engineering Technique
关键词
FBG
钢结构
光纤光栅传感器
温度补偿
施工监测
FBG
steel structure
FBG senor
temperature compensate
installation monitoring
