can总线通信研究与硬件设计学位论文.doc

北京邮电大学毕业设计 PAGE \* MERGEFORMATii 北京邮电大学毕业设计 PAGE \* MERGEFORMATi Can总线通信研究与硬件设计 摘　要 CAN总线是控制器局域网总线(Controller Area Network)的简称。属于现场总线的范畴，是一种有效支持分布式控制或实时控制的串行通信网络。CAN总线是一种多主方式的串行通讯总线，是国际上应用最广泛的现场总线之一，现已被应用到各个自动化控制系统中，从高速的网络到低价位的多路接线都可以使用CAN总线。CAN总线是一种全双工通信的串行通信网络，属于现场总线的一种，它的数据通信功能强大，能够有效的支持分布式控制或实时控制系统。相比与其它现场总线，CAN总线具有通信快、效率高、易实现、可靠性高等优势，现在已经在很多领域中都得到了应用。本文重点就基于单片机的CAN总线通信设计的实现进行介绍,通过CAN控制器以及CAN收发器把串口发送来的数据转换成CAN通信的数据，然后又把数据转换成串口通信数据回发给计算机，实现数据的自发自收。 关键词 CAN总线；通信；现场总线 CAN bus communication research and hardware design Abstract CAN bus is the Controller LAN bus (Controller Area Network). Belongs to the category of the fieldbus, and is an effective support distributed control or real-time control of serial communication network. CAN bus is a main way of serial communication bus, is one of the most widely used field bus in the world, has now been applied to various automation control system, from the network to the low price of multiplex wiring CAN bus CAN be used. CAN bus is a full-duplex communication serial communication network, belongs to a kind of fieldbus, it has powerful data communication function, CAN effectively support distributed control or real-time control system. Compared with other field bus, CAN bus communication is fast, high efficiency, easy realize and high reliability advantages, now has been applied in many fields. This paper is based on single chip microcomputer, introduces the implementation of the CAN bus communication design through the CAN controller and CAN transceiver to a serial port to send data into the CAN communication data, and then send data into the serial communications data back to the computer, realizing data of spontaneous. Key words CAN bus ; Communication ; The fieldbus PAGE \* MERGEFORMAT42 目 录  TOC \o 1-4 \h \z \u  HYPERLINK \l _Toc390358540 摘　 要  PAGEREF _Toc3