基于光纤光栅传感器的海水入侵温度测量系统  

Application of temperature sensor in sea water temperature measurement

作　　者：郭芳 闫光 孟凡勇 宋言明 钟国舜 GUO Fang;YAN Guang;MENG Fan-yong;SONG Yan-ming;ZHONG Guo-shun(Beijing Engineering Research Center of Optoelectronic Information and Instruments,Beijing 100016,China;Tianjin University,Tianjin 300072,China;North China Research Institute of Electro-Optic,Beijing 100015,China)

机构地区：[1]光电信息与仪器北京市工程研究中心,北京100016 [2]天津大学,天津300072 [3]华北光电技术研究所,北京100015

出　　处：《激光与红外》2019年第11期1357-1362,共6页Laser & Infrared

基　　金：国家自然科学基金面上项目(No.51675053);高等学校学科创新引智计划项目(No.D1021);“长江学者和创新团队”发展计划项目(No.IRT_16R07)资助

摘　　要：近年来海水入侵造成各地沿海滩涂出现了大面积生态退化,对滩涂温度的有效测量有利于监控滩涂海水入侵的情况解决生态平衡问题;通过对光纤光栅结构的特殊设计解决了基底热胀冷缩产生的应变对温度的测量,实现了传感器的解耦;光纤光栅传感器的重复性实验和标定实验,结果表明温度传感器的灵敏度在10.21 pm/℃以上,线性度达到了99%以上,精度为0.2℃,分辨率达到0.1℃,传感器具有良好的性能;在现场试验中,将3个光纤光栅传感器串联组成2000 m的传感器系统对滩涂的温度进行测量,数据表明该传感器可以在实际温度测量中进行使用。In recent years,the marine invasion has caused the large-scale ecological degradation of the coastal beaches in various regions.The effective measurement of beach temperature is helpful to monitor the invasion of beach water and solve the problem of ecological balance.Through the special design of fiber Bragg grating(FBG) structure,the temperature measurement of the strain generated by thermal expansion and cold contraction of the base is solved,and the sensor is decoupled.The fiber Bragg grating sensor′s repeatability test and calibration experiments show that the sensitivity of the temperature sensor is above 10.21 pm/℃,the linearity is above 0.99,the precision is 0.2 ℃,and the resolution is 0.1 ℃,and the sensor has good performance.In the field test,three fiber Bragg grating sensors were connected in series to form a sensor system of 2000 m to measure the temperature of beach.The data showed that the sensor could be used in actual temperature measurement.

关 键 词：光纤光栅 温度传感器 封装 海水入侵 

分 类 号：TN253[电子电信—物理电子学]