基于GIS和OTDR的光纤智能监控系统研究

为了提高光纤故障处置效率,设计了一种基于GIS和OTDR的光纤智能监控系统。介绍了系统的总体技术架构和软件功能框架。采用小波分析技术,提取OTDR曲线中的事件信息,找出故障点位置。将故障点的光纤长度数据转换为经纬度数据,并结合光缆拓扑结构和GIS系统,将故障点在电子地图上实时显示并告警。经过系统测试,结果表明：系统的OTDR损耗分辨率达到0.01dB,动态范围为34dB~45dB,监测响应时间为5ms；故障定位误差小于10米,告警时间为2ms,完全满足光缆应急处置要求。

Research on Fiber Intelligence Monitor System Based on GIS and OTDR

In order to improve the disposition efficiency of fiber fault, a fiber intelligence monitor system based on GIS and OTDR is designed. The total technology framework and software function structure are introduced. The incident information in OTDR curve is distilled by adopting wavelet analysis technology, and the position of fault point is found out. Then the fiber length data of fault point is transformed longitude and latitude data, and by combining the fiber topology structure and GIS system, the fault point is duly displayed on the electronic map and an alarm is throw out. Through the system testing, the results demonstrate that the wastage resolving ratio of OTDR is 0.01 dB, the dynamic scope is 34~45 dB, the measure response time is 5ms, the orientation error of fault is less than 10 meter, and the alarm time is 2 ms, which fully meets the demand of fiber emergency treatment.