一种实时控制总线及其实现方法

Real-time Control Bus and Its Implement Method

对于小规模通讯系统,目前国内没有形成一个完整的体系结构和通讯规范,因此建立一种完善的实时总线体系结构及其通讯标准就成为一个重要的研究课题;通过分析令牌总线控制思想,给出了以FPGA技术为基础构建一种实时控制总线体系结构的方法;设计了一种适合小型通讯系统的实用型硬件结构,详细介绍了这种结构下数据链路层协议的实现方法;结果证明利用该方法可以构建一种低成本工业测控网,并使该测控网满足了小规模通讯系统实时性要求。

As to the small-scale communication system an intact system structure and communication specification have not been formed in our country at present, so setting up a kind of complete real-time bus system structure and communication standard becomes an important subject for research. Through analyzing token bus control idea, a real-time control bus structure and its implementation based on FPGA technology are presented. A practical hardware structure suitable for small-scale communication system is designed and its implementation of data link layer protocol is introduced in detail. The result proves that a kind of low-cost industry network of monitoring and control can be constructed by this method, and the network can satisfythe real-time character request of small-scale communication system,