多传感器信息融合在Φ—OTDR系统中的应用  

Application of multi-sensors information fusion in Φ —OTDR system

作　　者：李灏[1] 杨德伟[1] 李立京[1] 钟翔[1] 孙昌君[1] 

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191

出　　处：《传感器与微系统》2016年第6期139-141,共3页Transducer and Microsystem Technologies

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。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 in 72 h.

关 键 词：相位敏感光时域反射计 多传感器信息融合 报警准确性 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]