毕业设计（论文）-CAN总线与以太网接口技术研究_精品.doc

各专业完整优秀毕业论文设计图纸 南京工程学院 自动化学院 本科毕业设计（论文） 题目： 以太网与CAN总线通讯接口技术研究 专 业： 自动化（数控技术） 班 级： 数控102 学 号： 203100613 学生姓名： 指导教师： 起迄日期： 2014.2～2014.6 设计地点： 工程实践中心 Graduation Design (Thesis) Ethernet and CAN bus communications technology research By Guo Shi Wei Supervised by Prof.Fang Li School of Automation Nanjing Institute of Technology June, 2014  摘 要 控制器局域网络(CAN)是一种能有效支持分布式控制或实时控制的串行通信网络具有高性能和高可靠性的特点现已经形成国际标准。但CAN总线也具有其局限性,那就是难以接入因特网。如果能够把现场总线与以太网连接那么这些问题都将得以解决同时由于以太网能够方便的接入因特网控制信息也将可以方便快速地传送到世界上任何一个地方。 本文在对以太网及CAN总线通讯协议进行深入分析的基础上对以太网与CAN总线接口技术进行研究以AT89S51单片机为核心处理器，以Keil Uvision2为软件开发，编写工具，以太网接口电路模块采用以太网控制器RTL8019AS芯片来实现单片机收发以太网上的数据，CAN总线接口电路模块采用CAN总线控制器SJA1000芯片来实现单片机收发CAN总线上的数据，进而实现了CAN总线接入以太网的功能。ABSTRACT Controller Area Network (CAN) is an effective control or support distributed real-time control of serial communication network with high performance and high reliability, and now has become an international standard. But CAN bus also has its limitations, it is difficult to access the Internet. If you can put a fieldbus and Ethernet connection, then these problems will be solved, and because Ethernet can easily access the Internet, the control information will also be quickly and easily transferred to any place in the world. Based on the Ethernet and CAN bus communication protocol in-depth analysis, Ethernet and CAN bus interface technology research to AT89S51 microcontroller core processor, with Keil Uvision2 for software developers, authoring tools, Ethernet interface circuit module using Ethernet controller RTL8019AS chip microcontroller to send and receive data over Ethernet, CAN bus interface circuit module using CAN bus controller SJA1000 chip to achieve single-chip transceiver CAN data bus, thus achieving a CAN bus Ethernet access capabilities . Key words: Ethernet; CAN bus; Gateway; Interface 目 录 第一章 绪 论 1 1.1 引言 1 1.2 选题的背景与意义 1 1.3研究现状 1 1.3.1 现场总线控制系统的优点 2 1.3.2 CAN总线简介 2 1.4 本文的结构 3