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航空全双工交换式以太网是由空客公司首先提出的新一代航空电子通信网络,并已经成功应用在A380等机型上[1][2]。随着航电通信网络变得越来越复杂,其连接的设备也越来越多。针对多个设备连接一套交换机的需求,提出一种基于FPGA的实时AFDX网络选择模块技术方案,对模块设计的硬件设计、系统组成及关键设计进行详细的介绍,且为功能扩展提供设计思路。研究结果表明该模块满足多个设备连接一台交换机的需求,符合AFDX协议。
Airline full-duplex switched Ethernet is the first-of-its-kind avionics network pioneered by Airbus and has been successfully used on the A380 and other models. [1] [2] As the avionics network becomes more complex, more devices are connected. Aiming at the requirement of connecting multiple switches to a set of switches, a real-time AFDX network selection module based on FPGA is presented. The hardware design, system configuration and key design of the module are introduced in detail, and the design ideas are provided for the function expansion. The results show that the module meets the needs of multiple devices to connect to a switch, in line with the AFDX protocol.