摘要
光缆故障自动监测系统的主要设备是光时域反射仪(OTDR)。文章介绍了OTDR的工作原理和关键参数,设计了基于现场可编程门阵列(FPGA)的手持式动态的OTDR系统,并详细论述了OTDR各功能模块的结构特点和设计原理。该系统与已有平台之间的数据传输通过PCI总线进行。文章最后通过对OTDR的动态范围和事件盲区2个系统指标进行实际测试,并对事件点的衰减和损耗计算进行了分析,对电力光通信网络的维护和检修有一定的参考价值。
The main equipment of cable fault automation monitoring system is optical time domain reflectometer （OTDR）. This article introduces the working mechanism and key parameters of OTDR, designs the handle OTDR system based on FPGA, and illustrates the structural characteristics and design principle in detail. This system transmits data by PCI wire bus with the exist platform. Finally, through testing the dynamic range and blind area of OTDR, this paper analyzes the attenuation of event points and loss calculation. It has a reference value for the maintenance and repairing of electric power optical communication network.
出处
《电力系统通信》
2013年第2期49-54,共6页
Telecommunications for Electric Power System
