光纤传感网络链路故障自修复系统设计

Design of Optical Fiber Sensor Network Link Fault Self-repair System

传统方法主要采用主从式的网络结构,网络中只有一个确定的主节点在网络出现链路故障时进行故障修复,使得广播风险过于集中,无法准确检测出故障发生地点和分析故障类别,也就不能实现及时的自修复,导致丢包率增加。提出一种基于DRP的网络链路故障自修复系统设计方法,采用禁用光纤传感网络备用路径的方式,选取网络中的各个节点轮流充当主设备,避免了网络风险过于集中的问题;分析了利用DRP高可用性的环路检测机制和链路故障探测机制,能够准确找到故障发生地点和所属类型;设计多条备用的冗余链路,当光纤传感网络链路发生故障时,能够有效利用设计的冗余链路应对链路故障,使光纤传感网络从链路故障中快速恢复,继续运行。在两种不同场景下进行模拟实验,结果表明所提方法能够准确地探测出光纤传感网络链路故障和故障类型,并能够及时完成自修复,降低了通信过程中的丢包率。

The traditional method mainly adopts the master-slave network structure, and only one of the identified nodes in the network performs fault repair when the network is faulty, which makes the broadcast risk too concentrated and can not accurately detect the location of the fault and analyze the fault category. Can not achieve timely self-re- pair, resulting in increased packet loss rate. This paper proposes a DRP-based network link fault self-repair system design method, which adopts the way of disabling the backup path of the optical fiber sensor network, selects the nodes in the network to take the main equipment in turn, avoids the problem that the network risk is too concentrated; DRP high availability loop detection mechanism and link fault detection mechanism, can accurately find the location and type of failure ; design a number of spare redundant links, when the optical fiber sensor network link failure, can effec- tively use the design Of the redundant link to deal with link failure, the fiber optic sensor network from the link failure to quickly resume, continue to run. The simulation results show that the proposed method can accurately detect the link fault and fault type of the fiber optic sensor network, and can complete the self - repair in time and reduce the packet loss rate in the communication process.