一种提高RS422通信BIT可靠性的设计方法

A design method to improve the reliability of RS422 communication BIT

摘要:

嵌入式串行通信系统被越来越多地应用于对传统机载设备的改造中,在现代军/民用航空机载计算机中就大量使用了异步串行通信总线RS422完成机载设备间的信息交互,RS422电路的机内测试(Built-in Test,BIT)技术是改善系统或设备测试性和维修性的重要途径,通过对机载计算机RS422通信模块故障特征的分析,结合实际应用给出一种提高RS422通信模块的BIT可靠性的软硬件设计方法。

Abstract:

Embedded serial communication systems are increasingly being used in the transformation of traditional airborne equipment in modern military / civil aviation onboard computer on the extensive use of asynchronous RS422 serial communication bus between airborne equipment complete information interactive, built-in test RS422 circuit (Built-in Test, BIT) technology is an important way to improve the system or device testability and maintainability, through the onboard computer RS422 communication module fault feature analysis, combined with practical applications, given a kind of software and hardware design method of improving the reliability of the RS422 communication module BIT