SAE AS5643协议分析及设计实现  

Analysis and Design Implementation of SAE AS5643

作　　者：王宣明[1] 田泽[1] 魏艳艳[1] 牛少平[1] 徐文进[1] 

机构地区：[1]中国航空计算技术研究所,陕西西安710068

出　　处：《计算机技术与发展》2015年第7期213-216,220,共5页Computer Technology and Development

基　　金："十二五"微电子预研(51308010601;51308010701);总装预研基金(9140A08010712HK6101)

摘　　要：为满足航空、航天等高安全领域对高可靠、低延迟、确定性的需求,SAE组织对IEEE 1394b协议局部进行了限制和改进,形成了SAE AS5643协议,其全称为用于军事和飞行器应用的1394b总线接口需求,目的是标准化Mil-1394b在军事和飞行器中的安全关键/任务关键应用中的方法途径。文中从实现系统确定性和可靠性两个方面来详细分析SAE AS5643,提出Mil-1394b总线相比IEEE 1394b总线更适合作为完全关键的航空总线等高可靠场合的应用,提出了基于逻辑及FPGA实现AS5643协议的解决方案,并给出了实验结果,表明该解决方案满足设计指标,性能良好,提高了协议解析速度以及数据传输时间精度。To meet the requirement of high-reliability,low delay and determinacy for aviation field, SAE enhances the IEEE 1394b proto- col and has been standardized as the SAE AS5643 protocol,whose full name is 1394b bus interface requirements used for military and air- craft application,the purpose is to standard the way for Mil-1394b in safety and task critical application in military and aircraft. Analyze SAE AS5643 in detail from the determinism and reliability of system,present that the Mil-1394b bus is more suitable for the application as a critical avionics bus in high reliability occasions compared with IEEE 1394b bus. And propose a solution for the implementation of AS5643 protocol based on logic and FPGA. Experimental results show that the method meets the design indicators, with good perform- ance, and increases the speed of protocol parsing and time precision of data transmission.

关 键 词：SAE AS5643 IEEE 1394b 分析 实现 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]