基于CAN总线通信系统实验的设计  

Design of Communication System Experiment Based on CAN Bus

作　　者：王津津[1] 张培仁[1] 崔军辉[1] 杨一敏[1] 许波[1] 

机构地区：[1]中国科学技术大学自动化系,合肥230027

出　　处：《自动化与仪表》2008年第5期17-20,共4页Automation & Instrumentation

摘　　要：分析了CAN总线位仲裁方式的不足与局限性,设计并实现了基于C8051F单片机的CAN总线通信系统实验。通过改变参与总线竞争的各个节点的延时时间,实现了所有节点公平享用总线的目标,提高了系统的稳定性和实时性,具有广泛的应用前景。In this paper, the limitations of bit arbitration mode of CAN bus is analyzed, In order to overcome these limitations, we design and implement a communication experiment of CAN bus based on C8051F MCU. By changing the time-delay of nodes competing with each other on the bus, all the nodes can equally share the bus. Furthermore, it improves the stability and real-time performances of the system. The method can be widely applied into the real time communication applications in a variety of industrial control systems based on CAN bus.

关 键 词：控制器局域网 C8051F 位仲裁 优先级 延时 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]