矿井工业以太网大流量负载实时调度策略

Real-time load scheduling strategy of mine industrial Ethernet based on massive data flow load

研究了矿井工业以太网在大流量视频负载下的时延效应和网络通信的实时调度策略.在分析工业以太网系统大流量视频负载下网络时延的理论计算方法的基础上,建立了矿井工业以太网模型,通过加载与煤矿现场数据流量近似一致的视频负载方法,对大流量视频负载分别在100Mbps和1000Mbps工业以太网络平台上的网络时延特性进行仿真试验.仿真结果表明:1000Mbps工业以太网具有更短的网络通信时延和更好的实时性,并据此提出了在有限的网络带宽下传输大流量视频负载时,减少网络时延、实现实时传输与控制的负载调度策略,其仿真结果表明,采用权值分配调度能够有效地减小网络通信时延,实现实时传输与控制.

The time delay effect and real-time scheduling strategy of mine industrial Ethernet network, which is under massive data flow video load, was researched. On the basis of analyzing the theoretic calculation of Ethernet network time delay based on massive data flow video load, the model of mine industrial Ethernet network was built, and the time delay effect of 100 Mbps and 1 000 Mbps industrial Ethernet when they connected video load was simulated by the method of loading data flow, which was approximative with the date flow of coal mine scene. The sim- ulation results show that 1 000 Mbps industrial Ethernet has shorter time delay and better real-time of communication than that of 100 Mbps industrial Ethernet. In order to decrease the delayed time of transmitting massive data flow and transmit the control instruction real-time in limited network bandwidth, the strategy of load scheduling was also given, and the load scheduling strategy simulation results show that distribution scheduling strategy can decrease the time delay effect of network effectively and get the aim of transmitting and controlling in real time.