ARINC659总线桥接的设计及对总线同步的影响分析

The Design of ARINC659 Bus Bridging and the Effect Analysis of bridging to Bus Synchronization

摘要:

ARINC659总线因其在时间和空间上均提供了完备的故障冗余和操作健壮性,已经逐渐在对数据通信确定性及故障沉默和屏蔽要求较高的航天领域中展开应用。为了使ARINC659总线能够更好的适应航天器综合电子系统的高度冗余容及分布式控制的需求,对一种能够在不同设备中ARINC659总线之间相互桥接的技术进行了研究,进而实现分布式综合电子系统中所有硬件模块的统一时序规划和通信调度,可以显著提升系统中的资源共享、并行处理、故障冗余及分布式控制能力,同时也为关键系统中不同设备中的硬件模块间实现严格的时序关系操作提供了一种解决方案。最后就桥接对ARINC659总线同步机制的影响进行了分析,据此提出了桥接设计的约束和实现规则。

Abstract:

With the characteristic of complete fault redundancy and operation robustness in both time and space, ARNC659 bus has been gradually adopted by aerospace which has high requirement of communication certainty as well as fault silence and insulation. In order to make the ARINC659 bus can better adapt to the demand of highly redundant and distributed control in spacecraft integrated avionics, this paper achieves a bridging technology that can connect the ARINC659 bus among different devices, so as to achieve unified timing planning and communication scheduling of all hardware modules of distributed integrated avionics. This improves significantly the ability of avionics in resource sharing and parallel computing and fault tolerance, and also provides an approach to operate between modules within different devices of pivotal system with strict temporal relationship. Finally, the effect of bus bridging to bus synchronization are analyzed, and puts forward design constraints and implementation principle during design of bus bridging.