基于拉曼散射光动态校准的分布式光纤温度传感系统

孙苗; 杨爽; 汤玉泉; 赵晓虎; 张志荣; 庄飞宇

doi:10.7498/aps.71.20220611

摘要

分布式光纤温度传感(distributed temperature sensor, DTS)系统进行温度测量时, 参考光斯托克斯光强度随着温度的升高而增大, 使信号光反斯托克斯光与参考光斯托克斯光强度的比值减小, 测量温度小于真实温度, 降低系统的测温准确度. 本文提出并实验验证了一种新的动态校准法修正斯托克斯光信号, 可有效减小斯托克斯光导致的测温误差, 提高系统的测温准确度. 该方法根据参考光纤中的实时斯托克斯光强分布, 模拟出对应的整条光纤在参考温度环境中的斯托克斯光强度曲线, 实现斯托克斯光的温度响应修正. 实验结果表明, 与传统温度解调方法相比, 分布式光纤温度传感系统进行斯托克斯光动态校准后测温准确度最高提升4.3 ℃. 与瑞利噪声抑制法联用后, 测温准确度提高8.9 ℃. 本研究为DTS系统进行高温环境温度监测提供了一种新的解决方案.

关键词:

Abstract

In a distributed fiber optic temperature sensing system, the intensity of Raman Stokes backscattering light serving as reference light increases with the increase of temperature, leading to measurement errors in the system. A novel method of dynamically calibrating Raman Stokes backscattering light intensity is proposed to improve temperature accuracy for distributed fiber optic temperature sensors. According to the real-time Stokes intensity distribution in the reference fiber, Stokes intensity curve of the whole fiber at a reference temperature is simulated, and the temperature response of Stokes light is corrected. The ratio of Raman anti-Stokes light intensity to the calculated Stokes light intensity is used to demodulate temperature along the fiber. The experimental results indicate that the temperature accuracy of the distributed optical fiber temperature sensor system after making the Stokes optical dynamic calibration is increased up to 4.3 ℃ compared with that from the conventional method. And the accuracy of temperature measurement is improved by 8.9 ℃ when combined with Rayleigh noise suppression method. This study provides a new solution for a distributed fiber optic temperature sensor system to monitor high temperature environment temperature.

Keywords:

distributed fiber optic temperature sensor /
Raman Stokes backscattering light /
calibration /
temperature accuracy

作者及机构信息

1.
合肥师范学院物理与材料工程学院, 合肥　230601

2.
中国科学院合肥物质科学研究院安徽光学精密机械研究所, 光子器件与材料安徽省重点实验室, 合肥　230031

3.
合肥师范学院, 电子信息系统仿真设计安徽省重点实验室, 合肥　230601

通信作者: 汤玉泉, laserway@aiofm.ac.cn

基金项目: 安徽省高校自然科学研究重点项目(批准号: KJ2019A0722, KJ2021A0909)、光电探测科学与技术安徽高校联合重点实验室项目(批准号: 2019GDTCZD01)、电子信息系统仿真设计安徽省重点实验室重点项目(批准号: 2020ZDSYSZD03)、安徽省大学生创新创业训练项目(批准号: 14098086)和中国科学院合肥物质科学研究院院长基金青年“火花”项目(批准号: YZJJ2020QN3, YZJJ2022QN02) 资助的课题.

Authors and contacts

1.
College of Physics and Materials Engineering, Hefei Normal University, Hefei 230601, China

2.
Anhui Provincial Key Laboratory of Photonic Devices and Material, Anhui Institute of Optics and Fine Mechanics, Hefei Institute of Physical Science, Chinese Academy of Sciences, Hefei 230031, China

3.
Anhui Province Key Laboratory of Simulation and Design for Electronic Information System, Hefei Normal University, Hefei 230601, China

Corresponding author: Tang Yu-Quan, laserway@aiofm.ac.cn

Funds: Project supported by the Key Projects of Natural Science Research in Colleges and Universities of Anhui Province, China (Grant Nos. KJ2019A0722, KJ2021A0909), the Universities Joint Key Laboratory of Photoelectric Detection Science and Technology in Anhui Province, China (Grant No. 2019GDTCZD01), the Key Projects of Anhui Province Key Laboratory of Simulation and Design for Electronic Information System (Hefei Normal University), China (Grant No. 2020ZDSYSZD03), the Innovation and Entrepreneurship Training Program for Anhui College Students, China (Grant No. 14098086), and the Dean’s Fund Project of Hefei Research Institute, Chinese Academy of Sciences (Grant Nos. YZJJ2020QN3, YZJJ2022QN02).

文章全文 : translate this paragraph

参考文献

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施引文献

图 1 DTS系统的实验装置图

Fig. 1. The experimental setup of the DTS system.

下载: 全尺寸图片幻灯片

图 2 (a) 光纤中的背向散射光分布; (b) 不同温度下归一化的散射光强度图

Fig. 2. (a) Backscattered lights distribution along the fiber; (b) variation of normalized Raman signals with temperature.

下载: 全尺寸图片幻灯片

图 3 原始的斯托克斯光信号和指数拟合的斯托克斯光信号

Fig. 3. Original Stokes signals and exponential fits.

下载: 全尺寸图片幻灯片

图 4 不同被测温度对应的测量结果　(a) 温度测量值; (b) 温度测量误差

Fig. 4. Demodulated temperature versus different measured temperature: (a) Measured temperature; (b) temperature error.

下载: 全尺寸图片幻灯片

图 5 DTS系统的测温结果　(a) 斯托克斯光动态校准前后消除瑞利噪声的测量温度; (b)斯托克斯光校准前后消除瑞利噪声的测温误差

Fig. 5. Temperature measurement results in DTS system: (a) Measurement temperature results without Rayleigh noise before and after Stokes light dynamic calibration; (b) temperature error without Rayleigh noise before and after Stokes light dynamic calibration.

下载: 全尺寸图片幻灯片

map

[1]	Ren L, Jiang T, Jia Z G, Li D S, Yuan C L, Li H N 2018 Measurement 122 57 Google Scholar
[2]	Francesca D D, Girard S, Planes I, et al. 2017 IEEE Trans. Nucl. Sci. 64 54 Google Scholar
[3]	Liu Y P, Yin J Y, Fan X Z, Wang B W 2019 Appl. Opt. 58 7962 Google Scholar
[4]	Yan B Q, Li J, Zhang M J, Zhang J Z, Qiao L J, Wang T 2019 Sensors 19 2320 Google Scholar
[5]	Yilmaz G, Karlik S E 2006 Sensor Actuat A-Phys. 125 148 Google Scholar
[6]	饶云江 2017 66 074207 Google Scholar Rao Y J 2017 Acta Phys. Sin. 66 074207 Google Scholar
[7]	刘铁根, 于哲, 江俊峰, 刘琨, 张学智, 丁振扬, 王双, 胡浩丰, 韩群, 张红霞, 李志宏 2017 66 070705 Google Scholar Liu T G, Yu Z, Jiang J F, Liu K, Zhang X Z, Ding Z Y, Wang S, Hu H F, Han Q, Zhang H X, Li H Z 2017 Acta Phys. Sin. 66 070705 Google Scholar
[8]	张明江, 李健, 刘毅, 张建忠, 李云亭, 黄琦, 刘瑞霞, 杨帅军 2017 中国激光 44 0306002 Google Scholar Zhang M J, Li J, Liu Y, Zhang J Z, Li Y T, Huang Q, Liu R X, Yang S J 2017 Chin. Laser 44 0306002 Google Scholar
[9]	Wang W J, Chang J, Lv G P, Wang Z L, Liu Z, Luo S, Jiang S, Liu X Z, Liu X H, Liu Y N 2013 Photonic Sens. 3 256 Google Scholar
[10]	杨睿, 李小彦, 高翔 2015 光子学报 44 1006006 Google Scholar Yang R, Li X Y, Gao X 2015 Acta Photon. Sin. 44 1006006 Google Scholar
[11]	Sun B N, Chang J, Lian J, Wang Z L, Lv G P, Liu X Z, Wang W J, Zhou S, Wei W, Jiang S, Liu Y N, Luo S, Lu X H, Liu Z, Zhang S S 2013 Opt. Commun. 306 117 Google Scholar
[12]	Yan B Q, Li J, Zhang M J, Xu Y, Yu T, Zhang J Z, Qiao L J, Wang T 2020 Appl. Opt. 59 22 Google Scholar
[13]	Wang Z L, Chang J, Zhang S S, Luo S, Jia C W, Jiang S, Sun B N, Liu Y N, Wei W, Liu X H, Lv G P 2015 Optik 126 270 Google Scholar
[14]	Wang Z L, Chang J, Zhang S S, Sun B N, Jiang S, Luo S, Jia C W, Liu Y N, Liu X H, Lv G P, Liu X Z 2014 Opt. Quant. Electron. 46 821 Google Scholar
[15]	Li J, Li Y T, Zhang M J, Liu Y, Zhang J J, Yan B Q, Wang D, Jin B Q 2017 Photonic Sens. 8 103 Google Scholar
[16]	李云亭, 张明江, 刘毅, 张建忠 2017 光电工程 34 20 Google Scholar Li Y T, Zhang M J, Liu Y, Zhang J Z 2017 Optoelectron. Eng. 34 20 Google Scholar
[17]	汤玉泉, 孙苗, 李俊, 杨爽, Brian Culshaw, 董凤忠 2015 光子学报 44 112 Google Scholar Tang Y Q, Sun M, Li J, Yang S, Brian C, Dong F Z 2015 Acta Photon. Sin. 44 112 Google Scholar
[18]	Wang Z L, Chang J, Zhang S S, Luo S, Jia C W, Jiang S, Sun B N, Liu Y N, Liu X H, Lv G P 2015 IEEE Sens. J. 15 1061 Google Scholar
[19]	Suh K, Lee C 2008 Opt. Lett. 33 1845 Google Scholar
[20]	Wang Z L, Zhang S S, Chang J, Lv G P, Wang W J, Jiang S, Liu X Z, Liu X H, Luo S, Sun B N, Liu Y N 2013 Opt. Quant. Electron. 45 1087 Google Scholar
[21]	孙苗, 汤玉泉, 杨爽, 李俊, Brian Culshaw, 董凤忠 2015 光电子·激光 26 2070 Google Scholar Sun M, Tang Y Q, Yang S, Li J, Brain C, Dong F Z 2015 J. Optoelectron. Laser 26 2070 Google Scholar
[22]	Wang Z, Sun X H, Xue Q, Wang Y L, Qi Y L, Wang X S 2017 Opt. Laser Technol. 93 224 Google Scholar
[23]	马天兵, 訾保威, 郭永存, 凌六一, 黄友锐, 贾晓芬 2020 69 030701 Google Scholar Ma T B, Zi B W, Guo Y C, Ling L Y, Huang Y R, Jia X F 2020 Acta Phys. Sin. 69 030701 Google Scholar
[24]	Chakraborty A L, Sharma R K, Saxena M K, Kher S 2007 Opt. Commun. 274 396 Google Scholar

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基于拉曼散射光动态校准的分布式光纤温度传感系统