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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。
In the traditional avionics integrated system (IAS), communication subnetworks have poor autonomy, and their management control is performed by the application host, eventually becoming the bottleneck that limits IAS performance. In view of the above problems, IAS communication subnet -1553BCN based on MIL-STD-1553B bus is designed and studied. The 1553 BCN enables autonomous management of subnets and fault-tolerant (degraded) operations of the communications subnet, and provides a hosted variable response long message service with a “just once” reliability semantics. Practice shows that, 1553BCN can better meet the IAS communication requirements, can be used to construct a new generation of IAS.