基于迈克尔逊技术的管道站场振动光缆周界报警系统  

Vibration optical fiber cable perimeter alarm system based on Michelson technology to the pump/compressor stations of pipeline

作　　者：董晓琪[1] 姜翔飞[1] 吴双[1] 

机构地区：[1]中国石油天然气管道工程有限公司,河北廊坊065000

出　　处：《油气储运》2015年第8期879-881,共3页Oil & Gas Storage and Transportation

摘　　要：传统的油气管道站场电类传感技术(振动电缆、对射类等)误报率较高,且由于其前端采用有源传感(需要供电),存在电磁干扰问题。基于此,提出了一种基于迈克尔逊的振动光缆技术:利用迈克尔逊干涉原理,测量微小变化,针对人为入侵的特点,通过匹配连续振动点的相似性来区分正常干扰和非正常入侵。基于迈克尔逊的振动光缆周界报警系统由传输光缆、传感光缆、始端防区模块、终端防区模块、信号处理单元、周界报警主机等组成。该系统针对人为入侵的特点设计,能有效区分正常干扰和非正常入侵,大大降低误报率,同时前端采用光传感器,无需供电,不存在干扰问题,在实际工程应用中效果良好。Traditional electronic sensing technologies（vibration cable, opposite type, etc.） that are used in the pump/compressor stations of oil and gas pipeline present higher false alarm rate and suffer electromagnetic interference because active sensing（power supply needed） is adopted at their front end. Therefore, a Michelson-based vibration optical fi ber cable technology is proposed. It is used to measure subtle change by means of Michelson interference principle. Based on the characteristics of human invasion, this technology can distinguish normal interference from abnormal invasion by similarity matching of continuous vibrant points. The Michelson-based vibration optical fi ber cable perimeter alarm system is composed of transmission optical fi ber cable, sensing optical fi ber cable, front-end defense module, back-end defense module, signal processing unit, perimeter alarm host and so on. This system can effectively tell the difference between normal interference and abnormal invasion since it is designed by taking human invasion into consideration, with much lower false alarm rate. Moreover, light sensors are used at the front end and no power supply is needed, so there is no interference problem. This technology presents good results in practical engineering application.

关 键 词：油气管道站场 迈克尔逊 振动光缆 前端模块 后端模块 

分 类 号：TE832[石油与天然气工程—油气储运工程]