随着工矿企业自动化程度的提高,设计了一种基于DMA方式的高速数据采集节点,采用新型系统级单片机,对节点中的高速缓存、CAN总线通讯接口等内容进行了讨论,阐述了同步采集的方法,结合节点的软硬件设计,给出了一些器件初始化程序的C51代码和部分模块的接口电路图。 With the improvement of automation degree of industrial and mining enterprises, a high-speed data acquisition node based on DMA mode is designed. The new system-level single-chip microcomputer is used to discuss the content of cache and CAN bus communication interface in the nodes. Method, combined with the hardware and software design of the node, gives the C51 code of some devices initialization program and interface circuit diagram of some modules.