激光技术2016，Vol.40Issue(5)：746-749,4.DOI:10.7510/jgjs.issn.1001-3806.2016.05.027
基于环绕式光纤的热风管温度解调技术
Temperature demodulation of hot air tube based on wrap-around optical fiber
摘要
Abstract
In order to overcome the following defects of high distance drift rate and poor optical fiber interchangeability when the distributed optical fiber and temperature sensing technology were used in blast furnace hot air tube , two terminal and single channel demodulation method ( TTSCDM ) was proposed .The decay term Zc was offset after arithmetic average operation for Stokes and anti-Stokes light intensity ratio from both directions .The distance drift rate K of TTSCDM was 0.011 and the maximum Raman ratio deviation of replacing fiber was 0.015.Experimental results show that this demodulation method has low distance drift rate .When optical fiber needs to be replaced , the decay coefficient does not need to recalibrate and the effective measurement of temperature field along the optical path can be implemented .关键词
光纤光学/分布式光纤/双端单路解调/高炉热风管/温度Key words
fiber optics/distributed optical fiber/two terminal and single channel demodulation/blast furnace hot air tube/temperature分类
信息技术与安全科学引用本文复制引用
方挺,欧阳强强,张敬棋,刘剑琴,胡兴柳,王彦..基于环绕式光纤的热风管温度解调技术[J].激光技术,2016,40(5):746-749,4.基金项目
国家自然科学基金资助项目 （）
