基于翼表温度测量的光纤Bragg光栅传感器研究  

Research of FBG Sensor Based on Morphing Wings' Surface Temperature Measurement

作　　者：王晓钢[1] 曾捷[1] 梁大开[1] 刘宏月[1] 徐海伟[1] 

机构地区：[1]南京航空航天大学飞行器结构力学与控制教育部重点实验室,江苏南京210016

出　　处：《压电与声光》2011年第5期717-720,共4页Piezoelectrics & Acoustooptics

基　　金：江苏省自然科学基金资助项目(BK2008388;BK2009370);航空科学基金资助项目(2008ZD52047);611航空科研基金资助项目;南京航空航天大学研究生创新基地(实验室)开放基金资助项目(200901003;200901004)

摘　　要：根据可变体机翼翼表温度检测范围-60～+80℃的要求,提出了一种基于铝板片封装的光纤Bragg光栅(FBG)温度增敏传感装置。该装置采用耐高温环氧树脂胶将FBG粘贴在铝板片U槽中,并预热60℃、保持30min以保证FBG温度传感增敏装置线性和重复性。研究及试验结果表明,在翼表工作环境温度范围内,该模型理论与实测温度灵敏度分别为28.16pm/℃和29.03pm/℃。与裸光栅相比,其增敏倍数分别为2.540倍和2.636倍,增敏倍数误差为3.78%,反射波长与温度的线性度达到0.999 3。因此,在翼体工作环境温度范围内尤其低温环境-60～0℃间,该温度增敏传感装置能满足检测所需精度。According to the requirements of the morphing wings＇ surface temperature testing range between --60℃-80 ℃, this paper proposes a fiber Bragg grating （FBG） temperature sensing device based on the aluminum packaging. We use a high-temperature endurable epoxy resin glue to paste the FBG in the U-groove of aluminum sheet, then preheat it to 60 ℃ and keep that temperature for 30 min, in order to make sure that this FBG temperature sensor has good linearity and repeatability. Within the range of morphing wings＇ surface operating tem- perature, the experimental results show that the theory and the measured temperature sensitivity of model are 28.16 pm/℃ and 29.03 pm/℃respectively, and compared with the bare grating sensitivity, the theory sensitization multiple of this model is 2. 540 and the measured result is 2. 636, the error is 3.78%. Besides, the linearity between the reflection wavelength and the temperature reaches 0. 999 3, so at the range of the wings＇ working environment temperature, especially at a low temperature range between --60- 0 ℃ the sensing device for temperature sensitivity can meet the need for detection accuracy.

关 键 词：光纤Bragg光栅(FBG) 可变体机翼 封装方法 温度测试 

分 类 号：TN253[电子电信—物理电子学]