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对航空电子强实时网络,提出了一种广播选择型和波长路由型混合波分复用体系结构和其调度结构模型.针对航电多信道强实时消息,提出了多信道负载比例轮转调度方法,以消息的负载比例在多信道上分配权值.分析了子系统内部消息和子系统外部消息在体系结构中调度模式的不同,推导了经过单次调度的子系统内部消息和经多次调度的子系统外部消息的多信道强实时调度约束条件,从而满足了航电系统所有消息的端对端的实时传输.针对航电实际系统,从系统资源和稳定性等角度提出了关键性参数的设计优化方法.最后用一个航电消息集实例进行具体说明.
For avionics real-time network, a hybrid wavelength division multiplexing (WDM) architecture and its scheduling structure model are proposed.For the multi-channel strong real-time message of avionics, a multi-channel load-ratio rotation scheduling method is proposed, The weights of messages are distributed on multiple channels.Analysis of the different scheduling modes in the subsystem of internal messages and external messages in subsystems and deduced the internal information of subsystems and the sub-schedules System real-time scheduling constraints of multi-channel external messages to meet the end-to-end real-time transmission of all messages of avionics system.According to the actual system of avionics, from the system resources and stability point of view, the key parameters of the design optimization method Finally, an example of avionics message set is used to explain it.