工业无线网络TSN实时优先队列调度算法研究

Research on TSN Real-Time Priority Queue Scheduling Algorithm for Industrial Wireless Networks

随着工业和信息化技术的发展,工业无线网络作为工业物联网的基础性技术,越来越受到业界的广泛关注。它以无线通信代替有线连接,大大减少了安装和维护的成本,在复杂的工业环境中,提供现场设备灵活的配置方案,为工业4.0的发展提供了强大的技术推动力。基于免同步收发调度模式,本文采用分布式图染色算法和优先级队列调度算法实现了多跳网络的免同步调度,并且在contiki平台上验证了调度算法的有效性,实验结果表明该算法保证了事件触发流和时间触发流的实时性通信。

With the development of industrial and information technology, industrial wireless networks as the basic technology of industrial Internet of Things, have received more and more attention from the industry. It replaces the wired connection with wireless communication, which greatly reduces the cost of installation and maintenance. In complex industrial environment, it provides a flexible configuration solution for field devices, which provides a powerful technical impetus for the development of Industry 4.0. Based on the asynchronous scheduling mode, the distributed graph coloring algorithm and the priority queue scheduling algorithm are used to realize the asynchro-nous scheduling of multi-hop networks. The validity of the scheduling algorithm is verified on the contiki platform. The experimental result shows that the algorithm guarantees real-time commu-nication of event-triggered flows and time-triggered flows.