贴片封装的光纤Bragg光栅温度传感器  

Bonded Fiber Bragg Grating Temperature Sensor

作　　者：禹大宽[1] 乔学光[1] 贾振安[1] 王敏[1] 

机构地区：[1]西安石油大学陕西省光电传感测井重点实验室,陕西西安710065

出　　处：《仪表技术与传感器》2006年第9期4-5,40,共3页Instrument Technique and Sensor

基　　金：国家863计划(No:2002AA313150);国家自然科学基金(No:60177028);陕西省科技攻关(No:2003K05-G23);陕西省教育厅(No:02JK158)

摘　　要：分析了光纤Bragg光栅的传感原理，提出了一种基于铍青铜片封装的光纤光栅温度传感模型。通过用一种耐高温胶将FBG粘贴在膜片材料上，使FBG在温度变化过程中一直保持张紧状态，保证FBG温度传感器有良好的重复性和线性。在20～200℃范围内进行温度实验，实验结果表明，FBG反射波长与温度有很好的线性关系，该温度传感器的温度响应灵敏度为0．0315nm／℃．实验拟舍值与理论值之差仅占理论值的2．9％。该传感器的温度测量范围大，可应用在油气井下较高温度环境的测量。The principle of fiber Bragg grating（FBG） sensing is analyzed. The temperature sensing model of FBG based on sticking a FBG on copper-beryllium plate is advanced.The FBG is fixed on the plate stuff with a kind of high temperature-resistance pastern to make the felt capability of FBG in the process of temperature change and ensure the sensor has a good repeatability and linearity. In the range of 20- 200℃, the FBGs reflective wavelength change is linear to temperature change. The temperature sensitivities is 0. 0315 nm/℃. The experimental value is coincided with the theoretical very well, and the relative error is 2.9%. The measuring range of FBG temperature sensor is so large that it will be used in the high-temperature and high-pressure oil/gas downhoU environment and so on.

关 键 词：导渡与光纤光学 光纤Bragg光栅(FBG) 温度传感 耐高温 

分 类 号：TN253[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]