基于Compact PCI总线的多通道通信故障检测系统设计

Design of multichannel communication fault detection system based on Compact PCI bus

针对现有多通道通信故障检测系统检测性能弱、效率低、比特误差率偏高的不足,提出一种基于Compact PCI总线的通信信号故障检测系统。给出Compact PCI总线通信故障检测机制,并基于此设计了检测系统的硬件平台及软件算法。通信故障检测系统的硬件部分由Compact PCI总线架构、信号采集模块、主控芯片、总线控制器及部署在终端的网络工作站组成,分别介绍了各模块的特征及基础功能;在软件算法流程上选用了通用性更好的二次相关算法,能够在低信噪比的条件下准确预估出通信网络时延,并提取出多通道通信故障信号中所包含的异常信息。最终的测试结果显示,提出系统的检测效率更高,在同等测试条件下可以得到更低的比特误差率。

A research of a communication signal fault detection system based on Compact PCI bus is proposed to deal with the deficiencies of low detection performance,low efficiency and high bit error rate of the existing multi⁃channel communication fault detection system.The communication fault detection mechanism of Compact PCI bus is given.On this basis,the hardware platform and software algorithm of the detection system are designed.The hardware of the communication fault detection system consists of Compact PCI bus architecture,signal acquisition module,main control chip,bus controller and network workstation deployed at the terminal.The characteristics and basic functions of each module are introduced respectively.The quadratic correlation algorithm with better commonality is selected in the process of software algorithm,which can accurately predict the communication network delay under the condition of low signal⁃to⁃noise ratio,and extract the abnormal information contained in the communication fault signal.The final testing results show that the proposed system has higher detection efficiency and lower bit error rate under the same test conditions.