Chinese Optics Letters, 2005, 3 (11): 11633, Published Online: Jun. 6, 2006
Full distributed fiber optical sensor for intrusion detection in application to buried pipelines Download: 1209次
Abstract
Based on the microbend effect of optical fiber, a distributed sensor for real-time continuous monitoring of intrusion in application to buried pipelines is proposed. The sensing element is a long cable with a special structure made up of an elastic polymer wire, an optical fiber, and a metal wire. The damage point is located with an embedded optical time domain reflectometry (OTDR) instrument. The intrusion types can be indicated by the amplitude of output voltage. Experimental results show that the detection system can alarm adequately under abnormal load and can locate the intrusion point within 22.4 m for distance of 3.023 km.
Jianzhong Gao, Zhuangde Jiang, Yulong Zhao, Li Zhu, Guoxian Zhao. Full distributed fiber optical sensor for intrusion detection in application to buried pipelines[J]. Chinese Optics Letters, 2005, 3(11): 11633.