摘要
介绍了一种基于Mach-Zehnder光纤干涉仪原理的分布式光纤管道安全预警系统。该系统利用与油气管道同沟敷设的普通通信光缆中的3根光纤作为分布式传感器,长距离连续监测油气管道沿线的土壤振动情况,并分析判断可能威胁油气管道安全的破坏事件,及时报警,起到安全预警的作用,能够对这些事件进行精确的分析和定位,详细阐述了系统的原理和组成。经过理论分析和测试结果表明,该系统具有较高的灵敏度和定位精度。
A new distributed optical fiber pipeline security forewarning system based on Mach-Zehnder optical fiber interferometer is introduced. PSFS uses the optical fiber in the general communication cables lying with the oil ＆ gas pipelines in one ditch as the distributed sensor to long-distance and continuously monitor the soil vibration condition along the oil and gas pipelines. The malicious events that may threat the oil and gas pipeline security is analyzed and a alarm information in time that act as security forewarning, as well as accurately analyses and position are implemented. The composition and operation principle of the system is described. Theory analysis and experimental result show that the proposed detection technology has high measurement sensitivity and location precision.
出处
《计算机工程与设计》
CSCD
北大核心
2011年第5期1862-1865,共4页
Computer Engineering and Design
基金
国家863高技术研究发展计划基金项目(2006AA06Z242)
关键词
分布式光纤传感器
预警
定位精度
检测
灵敏度
distributed optical fiber sensor
forewarning
location precision
detection
sensitivity
