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具有温度自补偿功能的新型光纤光栅应变传感器的研究
引用本文:杜彦良,刘晨曦,李剑芝.具有温度自补偿功能的新型光纤光栅应变传感器的研究[J].中国工程机械学报,2008,6(1):19-22.
作者姓名:杜彦良  刘晨曦  李剑芝
作者单位:河北省大型结构健康诊断与控制重点实验室,河北,石家庄,050043;河北省石家庄铁道学院,大型结构健康诊断与控制研究所,河北,石家庄,050043
基金项目:河北省自然科学基金 , 国家自然科学基金
摘    要:分析了光纤光栅的温度应变交叉敏感的机理,设计并制作了一种新型的具有温度补偿和应变增敏效果的光纤布拉格光栅应变传感器.实验结果表明,在-10-50℃的温度变化范围内,传感器实现了良好的温度补偿和应变增敏效果,温度敏感性降低至封装前的1/10,应变敏感性增至原来的1.17倍.

关 键 词:光纤光栅  应变传感器  温度补偿  应变增敏
文章编号:1672-5581(2008)01-0019-04

Investigation into new optical-fiber-grating strain sensors based on temperature compensation
DU Yan-liang,LIU Chen-xi,LI Jian-zhi.Investigation into new optical-fiber-grating strain sensors based on temperature compensation[J].Chinese Journal of Construction Machinery,2008,6(1):19-22.
Authors:DU Yan-liang  LIU Chen-xi  LI Jian-zhi
Institution:DU Yan-liang, LIU Chen-xi, LI Jian-zhi (1. Key Laboratory of Structural Health Monitoring and Control in Hebei, Shijiazhuang 050043, China; 2. Structural Heath Monitoring and Control Institute, Shijiazhuang Railway Institute, Shijiazhnang 050043, China)
Abstract:Firstly, the cross-sensitivity mechanism of temperature strain is first analyzed for optical fiber grating. Then, a new optical-fiber-grating strain sensor is designed and prototyped for temperature compensation and strain sensitization. Finally, it is indicated from experimental results that the strain sensor possesses good performances on temperature compensation and strain sensitization within a range from -10℃ to 50℃. Upon completion of encapsulation, the temperature sensibility reduced by 10 times, whereas the strain sensibility is increased by 1.17 times.
Keywords:optical fiber grating  strain sensor  temperature compensation  strain sensitization
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