分布式光纤测温系统的自校准与空间特性研究  

The Self-calibration and Spatial Characteristics Research of Distributed Optical Fiber Temperature Measurement System

作　　者：冯婷[1] 黄俊[1] 赖华[1] 李川[1] 赵振刚[1] FENG Ting;HUANG Jun;LAI Hua;LI Chuan;ZHAO Zhengang(School of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650504,China)

机构地区：[1]昆明理工大学信息工程及自动化学院,云南昆明650504

出　　处：《电子科技》2018年第9期53-57,共5页Electronic Science and Technology

基　　金：国家自然科学基金(51567013;51667011)

摘　　要：因温度监测不力而发生的火灾不仅带来经济损失,同时也威胁着人们的生命安全,需要采用有效的温度监测技术对空间场的温度进行长距离、精确、稳定的监测。文中设计了一种带自校准结构的分布式光纤测温系统(DTS),提出了一种双数字温度传感器取平均值的方法来确定系统的参考温度,并对系统的空间分布特性进行了研究与分析,通过拟合得到的温度补偿函数对系统进行了衰减补偿。结果表明,双数字温度传感器取平均值后的最大误差为0.11℃,系统解调精度达1℃,进行温度补偿后的系统解调精度基本保持在1℃以内,实现了分布式光纤测温系统长距离测温应用。The fire caused by poor temperature monitoring led to economic losses and it threatened people s lives. We must make a long distance, accurate and stable monitoring on the temperature of spatial field by using temperature monitoring technology. This paper designs a distributed optical fiber temperature sensing system（DST）with a self-calibration system and proposes a method that determines system reference temperature by taking average in double digital temperature sensors. The spatial characteristics is researched and fitted attenuation formula. Temperature field is compensated according to the attenuation formula. The result shows that the maximum error of double digital temperature sensors is 0.11 ℃.The system demodulation accuracy reaches 1 ℃.The system whose temperature field is compensated accuracy also reaches 1 ℃.The system realized measuring temperature in long distance temperature field.

关 键 词：分布式光纤测温系统 自校准 参考温度 空间特性 温度补偿 

分 类 号：TN253[电子电信—物理电子学]