首页> 外文会议>International Workshop on Opto-Electronic Sensor-Based Monitoring in Geo-Engineering; 20071018-19; Nanjing(CN) >Study on Application of Interferometric Distributed Optical Fiber Sensing Technology for the Oil and Gas Pipeline Pre-warning System
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Study on Application of Interferometric Distributed Optical Fiber Sensing Technology for the Oil and Gas Pipeline Pre-warning System

机译:干涉式分布式光纤传感技术在油气管道预警系统中的应用研究

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摘要

Two methods of distributed optical fiber sensing used in pipeline's pre-warning are presented in this paper respectively. One of them is based on the principle of Sagnac interference and the other is based on that of Mach-Zehnder interference. They both use the fiber in optical cable laid along the pipeline to detect the acoustic signal caused by leakage and some third-party contracts around. Two modified structures are also introduced. Theory analysis and simulation are carried out to compare the two arts. Practically, the art of Mach-Zehnder interferometer has better accuracy than the other one in target recogmtion and location. Comparably, it needs higher signal-to-noise ratio (SNR) for the art ofSagnac interferometer.
机译:分别提出了两种用于管道预警的分布式光纤传感方法。其中一个基于Sagnac干扰原理,另一个基于Mach-Zehnder干扰原理。他们都使用沿管道铺设的光缆中的光纤来检测由泄漏和周围的一些第三方合同引起的声音信号。还介绍了两个修改后的结构。进行理论分析和模拟以比较这两种技术。实际上,在目标识别和定位方面,Mach-Zehnder干涉仪的技术具有比另一种更好的精度。相比之下,对于Sagnac干涉仪而言,它需要更高的信噪比(SNR)。

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