传感技术学报2009，Vol.22Issue(11)：1661-1664,4.
基于改进型马赫-曾德干涉仪原理的管道安全预警系统研究
Study on Modified Mach-Zehnder Interferometer Based Pipeline Security and Pre-Warning System
摘要
Abstract
A novel distributed optical fiber pipeline security and pre-warning system, which is paved along the pipeline, is proposed. Five fibers in the same cable are used to form a double Mach-Zenhnder Interferometer, which can detect the micro-vibration along the pipeline. In order to gain two correlated signals, two 3×3 couplers are used to demodulate the phase changes caused by perturbation. The location of the perturbation can be measured by the time difference of the two phase signals from both clockwise and counterclockwise lights. The results show that the system protection distance and locating accuracy have been improved greatly.关键词
光纤振动传感器/管道安全预警/马赫-曾德干涉仪/相位解调Key words
fiber vibration sensors/pipeline pre-warning system/Mach-Zehnder interferometer/phase demodulation分类
能源科技引用本文复制引用
陈朋超,蔡永军,李俊,孟佳,封皓,靳世久..基于改进型马赫-曾德干涉仪原理的管道安全预警系统研究[J].传感技术学报,2009,22(11):1661-1664,4.基金项目
国家自然科学基金重点项目资助(60534050) （60534050）
天津市自然科学基金项目资助(06YFJMJC02000) （06YFJMJC02000）
