摘要
鉴于以太网在工业现场设备控制层的应用前景,有意将以太网引入武器装备的底层控制环境。但它必须满足确定性实时调度的要求。基于以太网的TCP/IP通信机制和IEEE 1588时钟同步协议,在数据链路层之上引入实时调度机制以消除现有的CSMA/CD机制在时间行为上的不确定性。相关的分析和测试表明,新设计的通信调度机制能够使得网络中的各通信节点在规定的时间段内,优先发送实时数据。
In view of the application prospects of Ethernet in the industrial field device control layer,we will introduce the Ethernet to the control environment of weapons.But it must solve real-time＇s deterministic scheduling problems,based on Ethernet TCP/IP communication mechanisms and IEEE1588 clock synchronization protocol,we eliminate the CSMA/CD protocol uncertainty behavior by adding real-time scheduling layer on the MAC layer.Related analysis and testing show that： the new design communication scheduling mechanism can enable each node to send real-time data first Within the Specified time.
出处
《电脑开发与应用》
2011年第3期18-21,共4页
Computer Development & Applications
