摘要
介绍了非余度AFDX交换机的系统结构,针对其交换功能进行了硬件、逻辑和软件层面的细致分析,提出了三个层次的双余度AFDX交换机设计方案,经过对比分析,在单余度AFDX交换机软件层次上重新设计配置解析软件实现双余度AFDX交换功能,建立了一个低成本的双余度AFDX网络验证环境,经过实际测量和理论分析,低成本双余度AFDX网络的余度网络转发延时满足ARINC664 Part7规范对冗余数据帧最大偏移值SkewMax的要求。
Introduces the system structure of single redundancy AFDX switch, analyzes its switching function at hardware, logic and software level, and puts forward three levels of double redundancy AFDX switch design scheme. At the software level of single redundancy AFDX switch, the configuration analysis software is redesigned to realize the function of double redundancy AFDX switching. A low cost verification environment of double redundancy AFDX network is established, and the practical measurement and theoretical analysis are carried out. The redundancy network forwarding delay of low-cost double redundancy AFDX network meets the requirements of ARINC664 Part7 specification for the SkewMax of redundant data frames.
作者
张志平
张旭
白杨
Zhang Zhiping;Zhang Xu;Bai Ying(AVIC Xi,an Aeronautics Computing Technique Research Institute,Xi'an 710065,China)
出处
《信息通信》
2019年第6期49-51,共3页
Information & Communications
