为了保证交换式工业以太网中实时数据端到端的传输时延和业务流传输的公平性,避免网络拥塞的出现,在对工业现场业务流类型分析的基础上,提出了一种基于SPQ_WRR队列调度的算法。为了验证该调度算法的有效性,采用了OPNET进行仿真,仿真结果表明,相比于传统的队列调度算法而言,该调度算法有效的保证了实时数据传输的实时性和业务流传输的公平性,同时起到了流量控制的作用,有效的避免了网络拥塞的出现。 In order to ensure the transmission delay of end-to-end real-time data and the fairness of service flow in switched Ethernet, and to avoid the emergence of network congestion, based on the analysis of the types of industrial field traffic, a SPQ_WRR queue scheduling Algorithm. In order to verify the validity of the scheduling algorithm, the OPNET is used to simulate. The simulation results show that compared with the traditional queue scheduling algorithm, the scheduling algorithm effectively guarantees the real-time data transmission and the fairness of the service flow transmission , At the same time played the role of flow control, effectively avoiding the emergence of network congestion.