基于琼斯矩阵建模的管道泄漏检测及预警系统的定位误差分析

封皓; 靳世久; 曾周末; 周琰; 曲志刚

光学学报, 2009, 29 (3): 723, 网络出版: 2009-03-17

基于琼斯矩阵建模的管道泄漏检测及预警系统的定位误差分析

Locating Error Analysis in Pipeline Leakage Detection and Prewarning System Based on Modeling Using Jones Matrix

论文大纲

封皓 ^*靳世久曾周末周琰曲志刚

作者单位

天津大学精密测试技术与仪器国家重点实验室, 天津 300072

相干光学光纤振动传感器琼斯矩阵关联二义性双折射偏振 coherence optics fiber vibration sensors Jones matrix ambiguity of relevancy birefringence polarization

摘要

为了解决分布式光纤油气管道泄漏检测及预警系统中常出现粗大定位误差的问题,需要提高定位精度,在分析系统的检测定位原理的基础上,基于单模光纤的双折射特性等效琼斯矩阵,建立了油气管道光纤预警系统的光学偏振模型,并对模型进行了仿真。指出信号关联的二义性即两传感器获得同一振动源的波形不相关的现象,是造成粗大定位误差的原因。根据该理论模型,提出了利用外加偏振控制器改变激光偏振方向的解决方法,定位实验证明该方法较好地解决了上述问题,提高了现场实验的定位精度。该模型的建立,为预警系统光路的改进和调节提供了理论指导。

Abstract

To eliminate the gross error in the distributed optical fiber pipeline leakage detecting andprewarning system and to improve the locating accuracy, based on the analysis on the detecting and locating principle, the optical polarization model is established which is based on the equivalent Jones matrix of the single-mode optical fiber birefringence. Model simulation shows that the cause for the gross error is the discrepancy of two signals, which means that the signals acquired by the photodetectors from the same vibroseis are not correlative. According to the theoretical model, the solution of using external polarization controller to change the polarization direction is put forward. It is proved by the experiment that the solution can solve the problem preferably and improve locating accuracy. Furthermore, a theoretical guidance of the system improvement and the adjustment in optical structure is provided based on the theoretical model.

参考文献

[1] . 基于EMD的管道预警系统信号多尺度混沌特性分析[J]. 石油学报, 2008, 29(2): 313-316.

. . Multi-scale chaotic characteristic analysis of detection signals in pipeline pre-warning system based on empirical mode decomposition[J]. Acta Petrolei Sinica, 2008, 29(2): 313-316.

[2] Zhou Yan, Jin Shijiu, Feng Hao et al.. Study on oil and gas pipeline leakage real-time inspection system based on distributed optical fiber: ISMTII 2007, Sendai,Japan,2007[C]. Sendai, Japan: Trans Tech Publications Ltd, 2007

[3] 周琰.分布式光纤管道安全检测技术研究[D].天津：天津大学,2006,96～106

Zhou Yan. Study on the Distributed Optical Fiber Pipeline Safe Detection Technology[D]. Tianjin: Tianjin University, 2006, 96～106

[4] 郑远,刘玉敏,杨伯君等. 用琼斯传输矩阵法研究二阶偏振模色散的统计特性[J].中国激光,2003,30(1)：45～48

Zheng Yuan, Liu Yumin, Yang Bojun et al.. Study of the statistical characteristics of second-order polarization mode dispersion by jones transfer matrix method[J]. Chin. J. Lasers, 2003,30(1):45～48

[5] 张靖华. 双折射光纤琼斯矩阵的一般表达式及反射传输特性[J].光子学报,1997,26(6)：527～531

Zhang Jinghua. General expression of jones matrix in birefringent fibers and reflective transmission characteristics[J]. Acta Photonica Sinica, 1997,26(6):527～531

[6] 廖延彪.偏振光学[M]．北京：科学出版社,2003：156～162

Miao Yanbiao. Polarization Optics[M]. Beijing: Science Press, 2003:156～162

[7] 谭静,陈伟民,符欲梅. 琼斯矩阵在分布式光纤传感器偏振态分析中的应用[J]. 光电工程,2007,34(2)：120～125

Tan Jing, Chen Weimin, Fu Yumei. Application of jones matrix in the research of polarization effects of the distributed optic fiber sensor[J]. Opto-Electronic Engineering, 2007,34(2):120～125

[8] . B. Mortimore. Fiber loop reflectors[J]. J. Lightwave Technol, 1988, 6: I217-I224.

[9] 宋牟平, 庄白云. 布里渊光时域分析传感器的消偏振衰落技术[J]. 光学学报,2007,27(4)：711～715

Song Muping, Zhuang Baiyun. Polarization-induced fading elimination technique in Brillouin optical time-domain analysis sensor[J]. Acta Optica Sinica, 2007,27(4):711～715

封皓, 靳世久, 曾周末, 周琰, 曲志刚. 基于琼斯矩阵建模的管道泄漏检测及预警系统的定位误差分析[J]. 光学学报, 2009, 29(3): 723. Feng Hao, Jin Shijiu, Zeng Zhoumo, Zhou Yan, Qu Zhigang. Locating Error Analysis in Pipeline Leakage Detection and Prewarning System Based on Modeling Using Jones Matrix[J]. Acta Optica Sinica, 2009, 29(3): 723.

基于琼斯矩阵建模的管道泄漏检测及预警系统的定位误差分析

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