【摘要】 时间敏感通讯系统要确保周期任务的实时性,同时还要能快速响应突发事件.为了在普通以太网上构建这种系统,由此提出了一种主从式、时间和事件混合触发的任务调度方法,使得各个通讯节点能按照调度表分时的占用网络带宽;此外还提供了一个基于循环队列的事件触发消息缓存-发送模型以简化通讯节点实现.实验结果表明在系统的时间粒度要求不高时,利用上述方法构建时间敏感通讯系统具有可行性.更多还原

【Abstract】 Time-sensitive communication systems are supposed not only to ensure real-time performance of periodic tasks,but also to respond quickly to sporadic events.In order to construct such systems based on general Ethernet,this paper proposes a master-slave task scheduling method which mixes time-triggered and event-triggered,enabling different communication nodes occupy the bandwidth according to a schedule.Besides;it provides a store-send model based on round-robin queue for event-triggered messages,with which the implementation of communication nodes can be simplified.Experimental results show that it is feasible to use this method to construct time-sensitive communication systems with low time precision requirement.更多还原