【摘要】 在计算机系统的冗余控制及分布式测控系统中,大量采用到串行通信方式进行数据传输。在这里利用51单片机自备的串行接口,实现点对点通信及多单片机系统之间的异步信息。它主要用于双机冗余控制单片机和单片机之间交换信息,也用于单片机和电脑之间的信息交流。系统采用多单片机系统组成分布式控制,系统采用主机和下位机结构,其中主机负责管理。下位机完成系统检测和控制的功能,在主机和从机之间配备RS-232发送接收器实现远距离传输,实验结果达到设计要求。更多还原

【Abstract】 In the redundancy control and distributed measurement and control system of computer system, serial communication is widely used for data transmission. In this paper, point-to-point communication and asynchronous information between multi-MCU systems are realized by using the serial interface of 51 MCU. It is mainly used for exchanging information between single-chip computer and single-chip computer, and also for exchanging information between single-chip computer and computer. The distributed control system is composed of multi-single-chip computer system. The system adopts the structure of host computer and slave computer, in which the host computer is responsible for management. Lower computer completes the function of system detection and control. RS-232 transmitter is equipped between host and slave computer to realize long-distance transmission. The experimental results meet the design requirements.更多还原