CAN总线接口模块设计
CAN总线接口模块设计(任务书,开题报告,外文翻译,论文15800字)
摘要
CAN总线现已成为应用最为广泛的工业现场总线之一。尤其是在最近几年在CAN总线技术的扩展应用上又取得了较大进展，使得CAN技术在更广阔的领域，例如卫星设备上有了应用空间。CAN总线技术的应用潜力值得进一步发掘。
CAN总线接口模块组成了CAN网络的骨架。在运用CAN技术的现场总线控制系统中，现场设备是通过CAN接口模块连接在CAN网络上；各设备之间的通信、CAN网络信息的处理和传递都依赖CAN接口模块来完成。
在本文中，简单的介绍了CAN总线的技术规范和CAN接口模块的结构，以此为背景设计了一款基于CAN控制器SJA1000的CAN总线接口模块。该模块的硬件电路利用AT89C51作为微处理器（MCU），SJA1000作为CAN控制器，PCA82C250作为CAN总线收发器。还设计了相应的复位电路以及抗干扰电路。在硬件电路的基础上设计了相应的软件，着重介绍了几个重要子程序的设计流程。
关键词：CAN总线；接口模块；SJA1000；初始化
Abstract
CAN bus has become one of the most widely used industrial field bus.Especially, in recent years, the expansion of the CAN bus technology has made great progress, which makes the CAN technology in a broader field, such as satellite devices have the application space. The application potential of CAN bus technology is worth further exploring [资料来源：https://www.doc163.com]
The CAN bus interface module is composed of the framework of CAN network. In the field bus control system, the field equipment is connected to the CAN bus through the node; the communication between the devices, the processing and transmission of CAN network information all rely on the CAN interface module to complete.
In this paper, a brief introduction of the technical specifications of the CAN bus and the structure of the CAN interface module, in order to design a CAN controller based on the CAN SJA1000 bus interface module. The module's hardware circuit using AT89C51 as a microprocessor (MCU), SJA1000 as the CAN controller, PCA82C250 as the CAN bus transceiver. Reset circuit and anti interference circuit are also designed. The corresponding software is designed on the basis of the hardware circuit, and the design flow of several important sub routines is introduced emphatically.
Key words: CAN bus; interface module; SJA1000; initialization
[资料来源：Doc163.com]
目录
第1章 绪论 1
1.1研究背景 1
1.2 国内外发展现状 1
1.3论文主要内容 2
第2章 CAN接口模块 3
2.1 CAN总线技术简介 3
2.2 智能CAN接口模块结构 3
第3章 CAN总线接口模块电路 5
3.1 方案选择 5
3.2 芯片介绍 6
3.2.1 CAN控制器SJA1000 6
3.2.2 CAN收发器PCA82C250 7
3.2.3 高速光耦合器6N137 8
3.3 硬件电路设计 9
3.3.1 基于SJA1000的控制电路设计 9
3.3.2 收发电路及抗干扰电路的设计 10
第4章 CAN总线接口模块软件设计 13
4.1 SJA1000初始化设计 13
4.2报文发送程序设计 19
4.3报文接收程序设计 20
第5章 总结与展望 22
参考文献 23
附录A 24
附录B 25
附录C 26
致谢 36