航空电子综合化系统通信子网设计研究

THE DESIGN RESEARCH OF A COMMUNICATION SUBNET FOR THE NEW GENERATION INTERGRATED AVIONICS SYSTEMS

传统的航空电子综合化系统(IAS)中,通信子网的自治性很差,其管理控制是由应用宿主机来进行的,最终成了限制IAS性能的瓶颈。针对上述问题,研究设计了一个基于MIL-STD-1553B总线的IAS通信子网—1553BCN。1553BCN实现了通信子网的自治管理和容错(降级)运行,并向宿主机提供具有“恰一次”(exactly once)可靠性语义的应答式可变长消息通信服务。实践表明,1553BCN能较好地满足IAS的通信要求,可用以构造新一代IAS。

The communication subnets in traditional Integrated Avionics Systems(IAS) are managed (controlled) by application processors and it becomes the performance bottleneck of the IAS. This paper presents the design and implementation of a IAS communication subnet-1553BCN, which is based on MIL-STD-1553B(management) and its fault-tolerant degradation. In support of the communication requirements of IAS application, a kind of acknowledged length-variable message passing service is provided, which implements the communication reliability semantics of 'exactly once'. Experiments have shown that the 1553BCN satisfies the communication requirements of the IAS quite well. It is suggested that the 1553BCN can be used to construct the new generation IAS.