基于边缘滤波的温度传感实验研究  

Temperature-sensed researches based on edge filter demodulation

作　　者：闫利琴[1] 陈希明[1] 吴小国[1] 付长凤[1] 夏秀兰[1] 

机构地区：[1]天津理工大学电子信息与通信工程学院,天津300191

出　　处：《天津理工大学学报》2007年第5期69-71,共3页Journal of Tianjin University of Technology

基　　金：光电信息技术科学教育部重点实验室开放课题资助(2005-16)

摘　　要：利用基于长周期光栅的边缘滤波解调方法,在给出波长解调原理的基础上,对裸光纤光栅和毛细钢管封装的光栅进行温度传感实验研究.实验结果表明,在所测温度范围内,光纤光栅呈现良好的线性关系,且封装式传感头线性度更优.而后利用封装式探头进行解调实验研究,表明经边缘滤波解调后系统的精度进一步提高.After boing given the sensing and demodulation theory of FBG for temperature measurement, we do temperature- sensed researches of bare FBG and steel capillary encapsulation FBG. The result indicates a linear relationship between the center wavelength of FBG and the thermal variation, and the steel packed grating is much better in the whole temperature range. Then we do demodulation experiment by that packed grating and the experimental results demonst rate that the precision of this system is higher.

关 键 词：边缘滤波 BRAGG光栅 线性解调 温度传感 

分 类 号：TP212.11[自动化与计算机技术—检测技术与自动化装置]