摘要
ARINC 825规范是在CAN总线相关标准的基础上,基于民用飞机高安全性的要求,在通信调度、完整性协议、冗余等方面对CAN协议做了适应性改进而形成的一个机载总线标准。确定性方面,ARINC 825在高层协议中增加了基于主时间片和次时间片的通信调度;完整性方面,ARINC 825增加了消息序号和校验,防止出现未检测出的消息丢失或者消息错误;可用性方面,ARINC 825定义了冗余的总线架构。针对ARINC 825总线协议的特点进行了分析。
Based on related standards of CAN bus,ARINC 825 adds description of communication scheduling,integrity protocol and redundancy to define an airborne bus which meets the requirement of high safety.For determinism,major and minor time frames are introduced to schedule the communication.For integrity,message sequence and additional checksum are added within the message.For availability,redundant architecture are defined.Such characteristics of ARINC 825 are discusses and analyzed within this paper.
作者
陈长胜
孙靖国
冯源
CHEN Chang-sheng;SUN Jing-guo;FENG Yuan(Xi'an Aeronautics Computing Technique Research Institute,AVIC,Xi'an 710068,China)
出处
《航空计算技术》
2020年第1期80-83,87,共5页
Aeronautical Computing Technique
基金
国家十二五基金项目资助(MJZ-2014-S-47)。
