摘要
光纤布拉格光栅应变传感器在封装时往往需要引入基体层,基体层的结构会影响传感器对待测结构应变监测的准确性。为了得到更优的基体层结构,通过有限元仿真计算,以回形结构基体层传感器的四个尺寸参量(回形结构到中截面的距离、中截面宽度、槽宽、槽深)为变量,探究了各尺寸参量对应变敏感的影响。对结构优化后的传感器进行制作和测试,并对未知参数进行标定,得到传感器的灵敏度、精度和有效测量范围。将该传感器与标准的电阻应变传感器进行对比,并给出了后续的优化方案。
A matrix layer is often used in the packaging of fiber Bragg grating strain sensors,and the matrix layer’structure influences the accuracy of the sensor’s strain monitoring of the structure to be measured.In this study,to obtain a better base layer structure,fourdimension parameters(distance from the loop structure to the middle section,middle section’s width,and depth of the groove)are taken as the sensor variables to investigate the effect of dimension parameters on strain sensitivity using finite element simulation.The structureoptimized sensor is built,tested,and the unknown parameters are calibrated to determine the sensor’s sensitivity,precision,and effective measurement range.The sensor is compared with a standard resistance strain sensor,and the subsequent optimization scheme is given.
作者
但丁谊
丁克勤
舒安庆
Dan Dingyi;Ding Keqin;Shu Anqing(School of Mechanical and Electrical Engineering,Wuhan Institute of Technology,Wuhan 430205,Hubei,China;China Special Equipment Inspection and Research Institute,Beijing 100029,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2022年第17期392-398,共7页
Laser & Optoelectronics Progress
基金
国家重点研发计划(2017YFC0805103)
国家自然科学基金(11772115)。
关键词
传感器
光纤光学
传感器优化
有限元仿真
sensors
fiber optics
sensor optimization
finite element simulation