| 新型分布式光纤管道泄漏检测技术及定位方法研究 |
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| 引用本文： | 杭利军,何存富,吴斌,蔡栋生,宋晏蓉.新型分布式光纤管道泄漏检测技术及定位方法研究[J].光学学报,2008,28(1):123-127. |
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| 作者姓名： | 杭利军 何存富 吴斌 蔡栋生 宋晏蓉 |
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| 作者单位： | 1. 北京工业大学机械工程与应用电子技术学院,北京,100022
2. 北京工业大学应用数理学院,北京,100022 |
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| 基金项目： | 国家自然科学基金(10572009)资助课题 |
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| 摘 要： | 介绍了一种基于萨尼亚克(Sagnac)干涉仪的直线型分布式光纤管道泄漏监测系统,实时进行管道泄漏监测和定位。此系统有两条传感光纤,可有效提高管道监测距离。推导了泄漏信号引起的光信号相位变化表达式;分析了该干涉仪应用于泄漏检测的原理及其泄漏源定位方法,并在分别距两传感光纤末端的法拉第旋转镜为3.990km和4.024 km处进行了泄漏检测实验。管道泄漏实验结果表明,该系统较准确地确定了泄漏源位置且定位误差小于1.05%.
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| 关 键 词： | 光纤光学 萨尼亚克干涉仪 分布式光纤传感器 泄漏检测 管道 |
| 收稿时间： | 2007/3/7 |
Research on Novel Distributed Optical Fiber Pipeline Leakage Detection Technology and Location Method |
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| Hang Lijun,He Cunfu,Wu Bin,Cai Dongsheng,Song Yanrong.Research on Novel Distributed Optical Fiber Pipeline Leakage Detection Technology and Location Method[J].Acta Optica Sinica,2008,28(1):123-127. |
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| Authors: | Hang Lijun He Cunfu Wu Bin Cai Dongsheng Song Yanrong |
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| Abstract: | An in-line distributed optical fiber sensor array based on Sagnac interferometer is developed,and it is used to monitor and locate leakage for the fluid-filled(or gas-filled) pipelines in real-time.The advantage of the sensor is that it can mcrease monitoring distance by using two sensing fibers.The representation of phase change for optic signal caused by leakage is formulated;the monitor principle and the leakage source location method for the detection system are analyzed.The experiment is carried out at 3.990 km and 4.024 km from Faraday rotator mirror 1 and Faraday rotator mirror 2,respectively.The results verify that the system can realize leakage detection and locate leakage source accurately,and the error is less than 1.05%. |
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| Keywords: | fiber optics Sagnac interferometer distributed optical fiber sensor leakage detection pipeline |
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