电动拖拉机CAN总线通信网络系统设计  

Design of CAN Bus Communication Network System on Electric Tractor

作　　者：陈燕呢 谢斌[1] 刘柯[1] 毛恩荣[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《农机化研究》2017年第9期233-238,243,共7页Journal of Agricultural Mechanization Research

基　　金："十二五"国家科技支撑计划项目(2014BAD08B04)

摘　　要：随着机电一体化技术的发展,电动拖拉机对整车控制系统的实时性和稳定性有了越来越高的要求,因此通信网络系统的研究成为关键技术之一。为此,以小型电动拖拉机为研究对象,进行了基于CAN总线通信网络系统的设计。首先,根据电动拖拉机整车控制系统组成,设计通信网络节点并进行功能定义,在ISO11783协议的基础上,根据电动拖拉机实际通信需求,改进并制定了CAN总线网络通讯协议;其次,基于MC9S12XS128MAL型单片机搭建CAN总线通信网络系统试验平台并完成软件设计;最后,通过系统性能测试验证了通信网络系统可以满足实时性、准确性和稳定性的要求。With the development of the electromechanical integration technology, the real-time and stability of electric tractor control system play a more and more important role. Therefore, the research of communication network system be- comes one of the critical technologies. This paper designs a communication network system based on CAN bus focusing on small electric tractor. First, according to the composition of electric tractor control system, this paper designs communica- tion nodes and defines the functions of nodes. On the basis of ISO11783 protocol, a CAN bus communication protocol is developed according to the actual communication requirements of the electric tractor. Second, a CAN bus communication network system test platform is built based on MC9S12XS128MAL. Simultaneously control program is also designed. Fi- nally, a system performance test is conducted, he test result meets the requirement of real-time, accuracy and stability of the communication network system.

关 键 词：电动拖拉机 CAN总线 网络通讯协议 通信网络系统 

分 类 号：S219.4[农业科学—农业机械化工程]