传感技术学报Issue(1)：70-73,4.DOI:10.3969/j.issn.1004-1699.2014.01.013
光纤光栅应变传感器温度补偿计算值的改进
Improvement of Temperature Compensation Calculated Value for FBG Strain Sensor
摘要
Abstract
The conventional temperature compensation algorithms do not consider the difference between sensor calibration condition and actual test condition,therefore it is deficient in the theoretical aspect. In order to solve the above problem, the restrained deformation characteristics and temperature influence of the sensors under test condition were analyzed, and then an improved algorithm for temperature compensation was proposed. The correctness of the algorithm was verified by means of theoretical analysis and strain test on a concrete block. Theoretical analysis shows that the proposed algorithm has considered the influence from the difference of the linear expansion coefficient between the sensor and measured structure. Therefore,the improved algorithm is theoretically more reasonable. Test result shows that the strain calculation error from the improved algorithm is less than 4 με, however the error from the conventional algorithm is more than 8 με. The improved algorithm is correct in the theoretical aspect with higher accuracy,and can be applied in practical projects.关键词
光纤光栅/温度补偿/应变测试/线膨胀系数Key words
fiber Bragg grating( FBG)/temperature compensation/strain test/linear expansion coefficient分类
信息技术与安全科学引用本文复制引用
侯立群,赵雪峰,冷志鹏,孙涛..光纤光栅应变传感器温度补偿计算值的改进[J].传感技术学报,2014,(1):70-73,4.基金项目
国家自然科学基金青年基金(51308094) （51308094）
国家自然科学基金面上项目(51278085) （51278085）
国家十二五科技支撑计项目(2011BAK02B02) （2011BAK02B02）
东北电力大学博士科研启动基金项目(BSJXM-201222) （BSJXM-201222）
