传感技术学报2019，Vol.32Issue(1)：144-149,6.DOI:10.3969/j.issn.1004-1699.2019.01.025
基于Φ-OTDR的煤层气管线外界入侵振动检测系统
Coalbed Methane Transport Pipeline Intrusion Detection System Based on Φ-OTDR
摘要
Abstract
In order to realize real-time monitoring of intrusion vibration of long-distance coalbed methane(CBM) transmission pipelines,a distributed optical fiber vibration sensing system based on Phase Sensitive Optical Time Domain Reflectometry(Φ-OTDR) is used,which integrates FPGA with USB2.0 technologies for achieving real-time acquisition and high-speed transmission. Through the two-dimensional time-space analysis, the typical characteristics of the vibration signals can be obtained, then the real-time detection of hazard source of coalbed gas transmission pipelines will be achieved. The experimental results show that the system can locate accurately through peak positions of differential signals. The frequency response range of the system is 1 Hz～3 kHz and can cover the characteristic frequency of the intrusion vibration, and the positioning errors at both the 4 km and 9 km fiber positions can be maintained within the range of 20 m. Therefore, the system can detect the intrusion vibration of the pipelines effectively.关键词
分布式光纤振动传感系统/入侵定位/相位敏感光时域反射计/煤层气输送管道Key words
distributed optical fiber vibration sensing system/intrusion location/Φ-OTDR/CBM pipelines分类
信息技术与安全科学引用本文复制引用
王鹏飞,董齐,刘昕,王宇,王东,靳宝全..基于Φ-OTDR的煤层气管线外界入侵振动检测系统[J].传感技术学报,2019,32(1):144-149,6.基金项目
山西省重点研发计划社会发展项目(201703D321034) （201703D321034）
山西省应用基础研究项目(201701D221115) （201701D221115）
山西省回国留学人员科研项目(2016-035) （2016-035）
山西省煤层气联合研究基金项目(2015012005,2016012011) （2015012005,2016012011）
