光学精密工程2017，Vol.25Issue(4)：857-866,10.DOI:10.3788/OPE.20172504.0857
5 MN光纤布拉格光栅力值传感器
Five MN force sensor based on fiber Bragg grating
摘要
Abstract
In view of the increasing demand for strong force value monitoring in landslide, a 5 MN force sensor based on Fiber Bragg Grating(FBG) was proposed.The sensor adopted 8 FBGs to compose 4 group of grating pair for cylindrical elastic strain collection.The grating pair can effectively compensate the effect of temperature on the size of FBG.The dimension of the cylindrical elastomer was determined and optimized via ANSYS numerical simulation.Then the force sensor was tested according to the national regulations.The experimental results show that the sensor with diameter of 124 mm and length of 302 mm, can provide a measurement range of 500-5000 kN and an overall accuracy of 1%.In addition, the wavelength variation corresponding to the maximum force value is 2 567 pm and the sensitivity is 2 kN/pm.The sensor is characterized by simple structure, large measuring range and high precision besides basic characteristics of the grating sensing.The sensor can be applied to force monitoring not only in landslide, but also in construction, chemical industry, coal mine, military and other fields.关键词
纤维光学/力值传感器/光纤布拉格光栅/弹性体/健康监测Key words
fiber optics/force sensor/fiber Bragg grating(FBG)/elastomer/health monitoring分类
信息技术与安全科学引用本文复制引用
高潮,刘邦,郭永彩,朱正伟..5 MN光纤布拉格光栅力值传感器[J].光学精密工程,2017,25(4):857-866,10.基金项目
国家自然科学资助项目(No.51178488,No.51478066) （No.51178488,No.51478066）
