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随着航空电子系统架构朝着网络化的方向发展,机载电子系统时间关键性和安全关键性的通信应用需求加大,交互的信息量级不断提升,传统的机载总线技术已无法胜任。时间触发以太网(TTE)在引入了高精度时钟同步机制的基础上,采用一致性通信、故障容忍和冗余设计等技术提高了通信的实时性、稳定性和安全性。以TTE和时间触发协议(TTP)为例,综合TTE和TTP的优势,提出跨网段的一体式时间触发网络设计方法,为航空机载电子系统领域提供了基于时间触发架构的统一网络服务。
With the development of avionics systems in the network direction, the demand for time-critical and safety-critical communication applications for on-board electronic systems has increased and the amount of information exchanged has been on the rise. The traditional airborne bus technology has become incapable. Time-triggered Ethernet (TTE) The introduction of high-precision clock synchronization mechanism based on the use of consistent communication, fault tolerance and redundant design techniques to improve the real-time communication, stability and security. Taking TTE and TTP as an example, this paper proposes an integrated time-triggered network design method based on TTE and TTP to provide a unified network service based on time-triggered architecture in the field of airborne electronic systems.