激光与光电子学进展, 2012, 49 (7): 070602, 网络出版: 2012-05-18
干涉分布式光纤水下长输气管道泄漏检测系统设计 下载: 538次
Design of Interference Distributed Fiber-Optic Underwater Long Gas Pipeline Leakage Detection System
测量 干涉法 混合干涉仪 泄漏检测 长输气管道 measurement interferometry mixed interferometer leakage detection long gas pipeline
摘要
介绍了一种基于马赫曾德尔和萨尼亚克混合干涉仪原理的分布式光纤干涉测量架构,可实时对管道进行泄漏检测和定位。阐述了该架构的检测原理和泄漏点的定位方法,并利用小波变换算法对采集的泄漏信号进行分析处理。对全长为3.994 km的感测光纤进行了管道泄漏检测实验并重复做了10次测试实验。实验结果表明,该系统运行稳定且泄漏检测的最大相对定位误差为1.47%。
Abstract
A new measuring structure based on the principle of Sagnac and Mach-Zehnder mixed distributed fiber-optic interferometer is proposed. The structure can detect pipeline leakage and locate leakage point in real-time. The leakage measuring principle and leakage positioning method for the structure are described, and the wavelet transform algorithm is used to analyze the acquisition of the leakage signals. The pipeline leakage detection experiment is carried out for the length of 3.994 km of the fiber-optic sensor, and the test experiments are repeated 10 times. The experimental results show that the system is stable and the maximum relative positioning error is 1.47%.
胡正松, 杨其华, 乔波. 干涉分布式光纤水下长输气管道泄漏检测系统设计[J]. 激光与光电子学进展, 2012, 49(7): 070602. Hu Zhengsong, Yang Qihua, Qiao Bo. Design of Interference Distributed Fiber-Optic Underwater Long Gas Pipeline Leakage Detection System[J]. Laser & Optoelectronics Progress, 2012, 49(7): 070602.