LI Hao, YANG De-wei, LI Li-jing, et al. Application of multi-sensors information fusion in Φ —OTDR system[J]. 2016, 35(6): 139-141. DOI: 10.13873/J.1000-9787(2016)06-0139-03.
多传感器信息融合在Φ—OTDR系统中的应用
摘要
针对相位敏感光时域反射计(Φ—OTDR)扰动传感系统存在较为严重的漏警和误警现象的问题
提出了一种多传感光纤系统方案。该方案结合多传感器信息融合理论
将传统的Φ—OTDR系统扩展为多路方案
并利用一种改良的D-S证据理论算法完成了多路信息的融合。通过实验证明了方案的可行性
漏警率由2%降至了0;误警现象由72 h内出现9次降至0次。
Abstract
Aiming at existence of false alarm and leak alarm phenomena in Φ—OTDR disturbance sensing system
a multi-sensors optical fiber system scheme is proposed. This scheme combines multi-sensors information fusion theory with the traditional Φ—OTDR system
which expands the system to multi-path scheme
then accomplish multi-path information fusion using an improved D-S evidence theory algorithm. The feasibility is confirmed by experiment
the leak alarm rate is reduced from 2 % to 0; phenomena of false alarm is reduced from 9 times to 0 in72 h.