基于Mega8单片机的CAN总线智能节点设计  

Intelligence Node Design Based on the Mega8 Single Chip Computer and CAN Bus

作　　者：孙道宗[1] 王卫星[1] 俞龙[1] 孙宝霞[1] 

机构地区：[1]华南农业大学工程学院,广东广州510642

出　　处：《现代电子技术》2006年第10期50-51,55,共3页Modern Electronics Technique

摘　　要：智能节点能通过节点电路中的微处理器对CAN控制器编程设置工作方式I、D地址、波特率等参数,实现对网络上的信息接收和发送,他主要由微处理器和可编程的CAN控制器组成。以AVR系列8位单片机Mega8和Philips CAN控制器SJA1000为基础,设计了Mega8单片机与CAN总线的智能节点接口电路,并给出了详细的接口电路原理图和软件设计流程图。实验证明,此设计有效地优化了以传统8位微处理器为核心的节点电路,增强了所在系统的稳定性和节点通信的可靠性。Through the program of microprocessor in the node circuit, the intelligent node which is mainly composed of microprocessor and programmable CAN controller can set working way, ID address, Baud rate and so on, to achieve the receiving and sending of the network information. Based on AVR series 8 bits single chip computer Mega8 and Philips CAN controller SJA1000, an intelligence node interface circuit of Mega8 single chip computer and CAN bus are designed in this paper,and interface circuit schematic diagram and software design flow chart are provided in detail. Experiments prove that this design effectively optimizes the node circuit focusing on the traditional 8 bits microprocessor, and strengthen the reliability of node communication and the system stability.

关 键 词：智能节点 Mega8单片机CAN总线 SJA1000 

分 类 号：TP393.03[自动化与计算机技术—计算机应用技术]