飞行器可用实时以太网技术

Real-time Ethernet technology for flight vehicle

为将实时以太网技术应用于飞行器通信系统,以改进飞行器设备间通信存在的多级总线并存、线缆复杂、灵活性差、传输速率低等问题,对飞行器通信系统的需求进行分析,对POWERLINK总线协议的机制、软硬件架构进行研究,通过在FPGA内部搭建以运行在软核之上的开源协议栈为核心的片上系统,阐述将POWERLINK应用于飞行器综合信息处理计算机外部通信的一般方案,通过实验验证了该技术的可用性,为飞行器实时以太网技术的研究和应用提供了参考。

To apply real-time Ethernet technology to the communication system of flight vehicles and improve the problems of multi-level bus coexistence,complex cables,poor flexibility and low transmission rate between equipment of flight vehicle,the demand for the communication system of flight vehicle was analyzed.The mechanism,software and hardware architecture of POWERLINK protocol were studied.By building a system-on-a-programmable-chip with the open source protocol stack which was running on MicroBlaze within FPGA as the core,the general scheme of applying POWERLINK to external communication of flight vehicles was described.The availability of this technology is verified by experiments,which provides a reference for the research and application of real-time Ethernet on flight vehicle.