基于累加平均的分布式光纤拉曼测温系统
|
摘要
分布式光纤拉曼温度传感(DTS)系统是一套基于光纤中的拉曼散射效应来实现分布式温度监控的系统,利用光纤中拉曼散射光的强度与光纤的温度状态有关的原理对温度进行实时监测。设计了一套9km的光纤拉曼测温系统,利用数据采集卡对斯托克斯和反斯托克斯光进行采集,在电脑端对温度进行累加平均处理,将微弱的信号从系统的噪声中提取出来,提高其信噪比。在累加平均16 000次的情况下测温精度达到了±2℃。
Distributed optical fiber Raman temperature sensor(DTS)system is a set of measuring principle of Raman scattering light in optical fiber,based on the distributed temperature monitoring system,which uses Raman scattering light in optical fiber temperature and fiber strength state related principle for real-time monitoring of temperature.A set of 9 km optical fiber Raman temperature measurement system was designed,the Stokes and the anti-Stokes light was collected by data acquisition card,the temperature was accumulated and averaged at the computer terminal,and the weak signal was extracted from the system noise to increase its signal-tonoise ratio.With accumulative average of 16 000 times,the accuracy of temperature measurement can reach to±2℃.
Distributed optical fiber Raman temperature sensor(DTS)system is a set of measuring principle of Raman scattering light in optical fiber,based on the distributed temperature monitoring system,which uses Raman scattering light in optical fiber temperature and fiber strength state related principle for real-time monitoring of temperature.A set of 9 km optical fiber Raman temperature measurement system was designed,the Stokes and the anti-Stokes light was collected by data acquisition card,the temperature was accumulated and averaged at the computer terminal,and the weak signal was extracted from the system noise to increase its signal-tonoise ratio.With accumulative average of 16 000 times,the accuracy of temperature measurement can reach to±2℃.
引文
[1]LYU Haibao,HUANG Rui,CHU Xingchun.Distributed optical fiber sensing technology[J].Optical Instruments,1997,19(3):9-17.吕海宝,黄锐,楚兴春.分布式光纤传感技术[J].光学仪器,1997,19(3):9-17.
[2]XU Ziheng.Research of distributed Raman optical fiber temperature sensing system[D].Wuhan:Huazhong University of Science&Technology,2009徐子珩.分布式拉曼光纤温度传感系统的研究[D].武汉:华中科技大学,2009.
[3]ZHAO Yong.Principle and application technology of optical fiber sensing[M].Beijing:Tsinghua University Press,2007.赵勇.光纤传感原理与应用技术[M].北京:清华大学出版社,2007.
[4]HARTOG A H.Raman sensors and their applications[J].SPIE,2012,8421:84210K.
[5]HU Jiangming,ZHANG Xiaoqing,JIA Yudong.Design of 3km distributed multi-mode fiber temperature alarm system[J].Modern Computer,2016(6):78-82.胡蒋明,张晓青,贾豫东.3km分布式多模光纤温度报警系统设计[J].现代计算机,2016(6):78-82.
[6]LIU Lei.Study on theory and application of distributed optic fiber Raman temperature sensor[D].Jilin:Jilin University,2014.刘磊.分布式光纤拉曼温度传感系统及其应用研究[D].吉林:吉林大学,2014.
[7]FEI Yetai.Error theory and data processing[M].Beijing:Tsinghua University Press,2010.费业泰.误差理论与数据处理[M].北京:清华大学出版社,2010.
[8]LIU Yanping,YE Zongshun,LIU Guo,et al.Distributed temperature sensor system[J].Hydropower Automation and Dam Monitoring,2011,35(4):55-58.刘艳平,叶宗顺,刘果,等.分布式光纤测温系统的研制[J].水电自动化与大坝监测,2011,35(4):55-58.
[9]WANG Qifu,QIAO Xueguang,JIA Zhenan.Development of research on Brilliouin scattering distributed optical fiber sensing technology[J].Transducer and Microsystem Technologies,2007,26(7):7-9.王其富,乔学光,贾振安.布里渊散射分布式光纤传感技术的研究进展[J].传感器与微系统,2007,26(7):7-9.
[10]Wang Z L,Zhang S S,Chang J,et al.Adaptive data acquisition algorithm in Raman distributed temperature measurement system[J].Optik,2014,125(7):1821-1824.
[11]ZHAO Ya,WANG Qiang,ZHAI Yongjun.Monitoring and experimental analysis of distributed optical fiber pipeline leakage based on wavelet packet energy spectrum[J].Journal of Applied Optics,2018,39(2):295-300.赵亚,王强,翟永军.基于小波包能量谱的分布式光纤燃气管道泄漏监测及实验分析[J].应用光学,2018,39(2):295-300.
[2]XU Ziheng.Research of distributed Raman optical fiber temperature sensing system[D].Wuhan:Huazhong University of Science&Technology,2009徐子珩.分布式拉曼光纤温度传感系统的研究[D].武汉:华中科技大学,2009.
[3]ZHAO Yong.Principle and application technology of optical fiber sensing[M].Beijing:Tsinghua University Press,2007.赵勇.光纤传感原理与应用技术[M].北京:清华大学出版社,2007.
[4]HARTOG A H.Raman sensors and their applications[J].SPIE,2012,8421:84210K.
[5]HU Jiangming,ZHANG Xiaoqing,JIA Yudong.Design of 3km distributed multi-mode fiber temperature alarm system[J].Modern Computer,2016(6):78-82.胡蒋明,张晓青,贾豫东.3km分布式多模光纤温度报警系统设计[J].现代计算机,2016(6):78-82.
[6]LIU Lei.Study on theory and application of distributed optic fiber Raman temperature sensor[D].Jilin:Jilin University,2014.刘磊.分布式光纤拉曼温度传感系统及其应用研究[D].吉林:吉林大学,2014.
[7]FEI Yetai.Error theory and data processing[M].Beijing:Tsinghua University Press,2010.费业泰.误差理论与数据处理[M].北京:清华大学出版社,2010.
[8]LIU Yanping,YE Zongshun,LIU Guo,et al.Distributed temperature sensor system[J].Hydropower Automation and Dam Monitoring,2011,35(4):55-58.刘艳平,叶宗顺,刘果,等.分布式光纤测温系统的研制[J].水电自动化与大坝监测,2011,35(4):55-58.
[9]WANG Qifu,QIAO Xueguang,JIA Zhenan.Development of research on Brilliouin scattering distributed optical fiber sensing technology[J].Transducer and Microsystem Technologies,2007,26(7):7-9.王其富,乔学光,贾振安.布里渊散射分布式光纤传感技术的研究进展[J].传感器与微系统,2007,26(7):7-9.
[10]Wang Z L,Zhang S S,Chang J,et al.Adaptive data acquisition algorithm in Raman distributed temperature measurement system[J].Optik,2014,125(7):1821-1824.
[11]ZHAO Ya,WANG Qiang,ZHAI Yongjun.Monitoring and experimental analysis of distributed optical fiber pipeline leakage based on wavelet packet energy spectrum[J].Journal of Applied Optics,2018,39(2):295-300.赵亚,王强,翟永军.基于小波包能量谱的分布式光纤燃气管道泄漏监测及实验分析[J].应用光学,2018,39(2):295-300.