AFDX 网络系统监控设计与实现

航空电子全双工交换式以太网AFDX (Avionics Full-Duplex Switched Ethernet)作为一种新型航空总线技术,因具备高实时性、高稳定性、可扩展性等特点已在空客A380等大型商用飞机上进行了成功应用,并将成为新一代飞机的主流通信网络。如何对AFDX网络的性能进行有效地测试验证将会直接影响着航空电子系统的平稳发展。本文通过分析AFDX网络系统工作过程,提出了一种基于并联方式数据采集的网络监控方案,系统授时精度高、同步性强。通过实际测试验证,该系统可以有效地对AFDX网路系统的实时性和可靠性等性能进行测试评估。

Design and implementation of AFDX network system monitoring scheme

With the high real-time performance, high stability,and scalability, AFDX (Avionics Full-Duplex Switched Ethernet) has been successfully applied to Airbus A380 and other big aircrafts as a new sort of aviation bus technology,and will be the main communication network of the new generation aircrafts.It will directly impact on the smooth development of the avionics system that how to demonstrate the performance of the AFDX network effectively.Based on the working principle of AFDX network,this paper proposed a monitoring and test schme of AFDX network with parallel data acquisition technology.It has high time accuracy and synchronization.With the real test,it can evaluate the Sreal-time performance and reliability of the AFDX network effectively.