一种基于VPX架构的机载计算机的设计方法

Design and implement of an airborne computer based on VPX architecture

随着航空技术的不断发展,机载计算机的水平已经成为衡量飞机性能的重要标志之一。VPX标准是目前国际上最新的、兼容性最好的军用嵌入式计算机标准之一。针对机载计算机更高的抗恶劣环境以及处理信息的速度、精度需求,提出了一种基于VPX架构的高性能机载通信计算机的设计方法,详细介绍了计算机总体及内部模块的设计原理,提出实现方案。同时给出了计算机功能性能的测试方案,测试结果表明,机载计算机各功能接口齐全,千兆以太网传输速率受协议处理及任务调度等影响,实际传输速率要低于理论值,速率可从200多兆提高到最高500多兆,实现了相对于传统计算机以太网数据处理的能力提升。

With the development of avionics technology,the level of airborne computers has become one of the important indicators to measure the performance of aircraft. The VPX standard is one of the latest military embedded computer standards with the best compatibility in the world. Aiming at the higher requirement of carrying harsh environment and processing speed and accuracy of information for airborne computers,A design method of high performance extreme load communication computer based on VPX architecture is proposed. The design principle of the overall and internal modules of the computer is introduced in detail,and the implementation scheme is proposed. At the same time,the test scheme of computer functional performance is given. The test results show that the computer has complete functional interfaces. The transmission rata of Gigabit Ethernet is affected by protocol processing and task scheduling,and the actual transmission rate is lower than the theoretical value. The speed can be increased from more than 200 megabits to more than 500 megabits,which improved the ability of data processing compared with traditional computer Ethernet.