基于光纤布拉格光栅湿度传感器的研究  

Study on fiber Bragg grating based humidity sensor

作　　者：艾延宝[1] 

机构地区：[1]黑龙江科技学院电气与信息工程学院,黑龙江哈尔滨150027

出　　处：《传感器世界》2009年第3期17-19,共3页Sensor World

基　　金：黑龙江省教育厅2008年度科学技术研究项目(编号:11531331)

摘　　要：文章基于光纤布拉格光栅对温度、湿度等敏感的基础上,分析了以聚酰亚胺(PI)薄膜为湿敏涂层,当湿度变化时,由于涂层的膨胀,导致光纤布拉格光栅产生应变,从而对湿度传感。理论分析与实验证明,光纤布拉格光栅湿度传感器是一种性能良好的湿度传感器。In the paper, a novel relative humidity Fiber Bragg Grating（FBG） sensor based on fiber is designed based on deeply studies of FBGs. Design of the FBG sensors： To overcome the lack of the humidity sensing field at present, in which the relative humidity is deduced from a fiber Bragg grating coated by a polyimide film. The sensing principle is based on the strain effect induced in the fiber Bragg grating through the swelling of the polymer coating causes by the absorption of the moisture. According to the theoretically analysis and the experiments, the fiber Bragg grating based relative humidity sensor is a nice kind of relative humidity sensor.

关 键 词：光纤布拉格光栅 光纤光栅传感器 湿度传感器 湿敏聚合物 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]