综合模块化航电系统FC网络的机内测试设计

Built-in-Test Design for Integrated Module Avionics Fibre Channel Networks

针对综合模块化航电系统FC网络单元分布范围广、故障定位困难、维修效率低的问题,设计了一种机内自测试方法。在网络构建时间和通信效率的约束条件下,通过网络构建和故障检测同步进行的机制实现快速的任务前故障检测,通过实时监测和故障触发相结合实现低开销的任务中故障检测。在网络故障发生后,通过网络遍历和通信自环绕测试将故障有效地隔离至单个模块,提高检测和维修的效率。

A bulit- in test method was proposed to solve problems of widely distributed network unit fault location difficulty and low maintaining efficiency in integrated module avionics Fibre Channel networks. Under the constraint of the network construction time and communication efficiency, this bulit- in test method achieved rapid pre- mission fault detection by the synchronization of network construction and fault detection, and achieved low overhead during- mission fault detection by combining real time monito- ring and fault triggering. After a network failure, the combination of network ergodic and wrap- around communication test can effectively isolate the failure to single module, and then improved the detection and maintaining efficiency.