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首页> 外文期刊>Journal of the Japan Petroleum Institute >Modeling of Pipeline Leakage Detection and Prewarning System for Locating Error Analysis Based on Jones Matrix
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Modeling of Pipeline Leakage Detection and Prewarning System for Locating Error Analysis Based on Jones Matrix

机译:基于Jones矩阵的管道泄漏检测预警系统定位误差分析建模

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摘要

The detecting and locating principle of the distributed optical fiber pipeline leakage detecting and prewarning system is proposed in this paper. In allusion to gross error which often occurred in the locating process, the optical polarization model of oil and gas pipeline fiber warning system is established in this paper, which is based on the equivalent Jones matrix of the single-mode optical fiber birefringence. By emulating the model, the reason of 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, theoretical guidance of the system improvement and the adjustment in optical structure can be provided based on the theoretical model.
机译:提出了分布式光纤管道泄漏检测预警系统的检测定位原理。针对定位过程中经常发生的严重误差,建立了基于单模光纤双折射等效琼斯矩阵的油气管道光纤预警系统的光偏振模型。通过仿真模型,总误差的原因是两个信号之间存在差异,这意味着光电探测器从相同的振动信号获取的信号是不相关的。根据理论模型,提出了使用外部偏振控制器改变偏振方向的解决方案。实验证明,该方案可以较好地解决问题,提高定位精度。此外,可以基于理论模型提供系统改进和光学结构调整的理论指导。

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