差动式光纤Bragg光栅土压计及其温度特性的研究  

A Differential Optical Fbier Grating Pressure Cell and the Temperature Characteristic

作　　者：王俊杰[1] 姜德生[1] 梁宇飞[1] 付晓红[1] 刘胜春[1] 黄俊斌[2] 

机构地区：[1]武汉理工大学光纤传感与信息处理教育部重点实验室,湖北武汉430070 [2]海军工程大学兵器工程系,湖北武汉430033

出　　处：《光电子．激光》2007年第4期389-391,共3页Journal of Optoelectronics·Laser

基　　金：国家"973"重大基础研究资助项目(513601ZT2);武汉市青年科技晨光计划资助项目(20065004116-20);武汉理工大学博士科研启动经费资助项目

摘　　要：基于平面圆形薄板和悬臂梁组成一复合结构,实现了光纤Bragg光栅(FBG)压力传感器的差动式测量。结果表明:传感器分辨率为0.05%,重复性为0.14%,回程误差为0.38%,线性误差为0.24%,基本误差为±0.57%;以20℃为基准,在-20^+100℃,温度引起的零点漂移不超过满量程的1.9%,随着工作温度范围减小至-20^+50℃,零点温度漂移也减小至满量程的0.6%,在0^+30℃,温度特性非常好,零点温度漂移最大为满量程的0.07%。给出了进一步改善传感器压力传感特性和热稳定性的方法。Based on the composite structure which consists of planar circular sheet and cantilever, a differential optical fiber grating pressure has been presented. Research results indicate that the sensor resolution is up to 0.05% ,the repeatability, hysteresis,and nonlinearity of the sensor over the full pressure range are 0. 14% ,0. 38% and 0.24%, respectively. There- fore,the overall measurement accuracy was ± （0.14＋0.24＋0.38/2）% = ± 0. 57 % over the full range; Making reference to the temperature 20 ℃ ,Zero temperature excursion gives a measurement uncertainty of 1.8 percent over the full range within the temperature range - 20- ＋ 100 ℃, according to the decreased operating temperature range of - 20 - ＋ 50 ℃, the zero temperature excursion is reduced to 0. 6 %, and in the range of 0- ＋30 ℃,the temperature characteristic is very good,Zero temperature drift is less than 0.07%;. Finally the methods how to improve the static pressure sensing characteris- tic and heat stability are presented.

关 键 词：光纤传感器 光纤Bragg光栅(FBG) 压力传感器 差动式测量 零点温度漂移 

分 类 号：TN253[电子电信—物理电子学]