摘要
为构建网络化的数据采集系统,根据数据采集模块与处理控制模块通过以太网相连接的结构模型,设计了基于Nios软核系统的嵌入式以太网网络接口模块。给出了具体的硬件设计方案,特别对以太网接口控制芯片LAN91C111的设计进行了详细阐述;在软件的实现中介绍了Nios开发包的TCP/IP协议栈的应用和网络接口芯片的驱动编写,在通信协议的基础上给出软件流程图。该设计具有通用性好、可扩展性强以及方便易行等优点,为远程数据采集系统的网络化提供了很好的解决方案。
According to the structure model of data acquisition and processing system connected by Ethernet, the network interface module based on the Nios soft--core system is designed to construct the network data acquisition system. Detail design of the hardware is presented, and the design of the network interface chip LAN91C111 is described particularly. On the realization of software, the application of TCP/IP protocol stack of Nios development kit and the driver for network interface chip are introduced. And on the basis of communication protocol, the program flow chart is presented. The network accessing shows us flexibility, stability, easy--maintainability and high--effi ciency. This design provided a good solution method for the remote data acquisition system.
出处
《计算机测量与控制》
CSCD
2005年第12期1419-1422,共4页
Computer Measurement &Control
