基于FBG准分布式光纤智能周界警戒系统  

An Intelligent Perimeter Alarming System Based on Quasi-Distributed FBG Sensors

作　　者：王振宝[1,2] 刘福华[1,2] 王飞[1,2] 陶蒙蒙[1,2] 闫燕[1,2] 

机构地区：[1]西北核技术研究所,西安710024 [2]激光与物质相互作用国家重点实验室,西安710024

出　　处：《现代应用物理》2015年第4期312-316,共5页Modern Applied Physics

摘　　要：设计了一种基于多个串联FBG传感元直接成缆的大面积、长距离智能周界警戒技术。建立了8路时分、13路波分复用实验系统,在此基础上实现了探测距离大于1 km、定位精度为10 m、波长解调精度为0.01 nm的智能警戒。同时,该系统具有成本低、FBG传感元数量多、告警定位精确、告警灵敏度高、布放灵活及易于复用拓展等特点。现场实验证明,该系统能够完成不同入侵模式的判断,可以用于周界警戒。A large-area and long-distance intelligent perimeter alarming system was devel- oped with fiber Bragg grating （FBG） sensors directly wounded into an optical fiber cable. The system adopts the time/wavelength hybrid multiplexing techniques, and can cover a de- tecting distance more than 1 km, with a location precision less than 10 m and a wavelength demodulation precision less than 0.01 nm. This low-cost system compacts many FBG sen- sors into an optical fiber cable, which guarantees a relatively higher alarming sensitivity, a more flexible installation, and an easier multiplex. The field tests indicated that the system is sensitive to any kinds of invasions, and can be applied to perimeter alarming successfully.

关 键 词：准分布 FBG传感元 周界警戒系统 告警灵敏度 

分 类 号：TN216[电子电信—物理电子学]