文档介绍：毕业设计论文
题目:基于CAN总线的分布式工业测控系统的应用研究
英文题目:Application and Research on Distributed Industrial Measure and Control System Based on CAN Field-bus
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专业:自动化
二零零六年六月
摘要
现场总线是连接现场设备和自动化系统的数字式、双向传输、多分支结构的通信网络。它是计算机技术、通信技术和控制技术高度综合与集成的产物,是一种开放式和分布式的新模式。现场总线是当今自动化领域技术发展的热点之一。
CAN(控制器局域网)属于现场总线的范畴,是一种有效支持分布式控制和实时控制的串行通信网络。它特别适合工业过程监控设备的互连,己被公认为是最有前途的现场总线之一。本文以CAN现场总线技术为基础,研究了一种分布式工业测控系统。其主要研究内容如下:
本文对分布式工业测控系统的发展现状以及CAN总线在分布式测控方面的应用进行了综述,并对其主要特点做了简要介绍。阐述了CAN总线的特点、CAN总线通信协议及CAN支持器件。然后根据测控系统的特点,给出了基于CAN总线测控网络的总体设计方案、系统结构。接着根据系统的实际需要,主要设计了PC机通信适配卡和智能节点。对适配卡和测控节点的功能模块组成,各个模块的工作原理、硬件设计、软件设计以及他们的实现方法,进行了较为深入的探讨和详细的论述。
关键词
CAN总线;分布式测控系统;适配卡;智能节点
Abstract
Field bus is a digital, bi-directional and multi-work that connects field equipments and automatic system. As a product integrating technology puter, communication and control, the field bus featured with opening and distribution has been one of the key technologies in modern automatism field.
As one of the field buses, CAN (Controller work) is a work that supports distributed and real time control effectively. CAN very fit interlinkage of monitor and control equipments in industry process and has been well accepted as the most perspective field bus. A distributed industrial measurement and control system was studied based on CAN field bus. Research content includes as follows:
Firstly technologies a summary is made on the development of distributed industrial measurement and control system and the applications of CAN in distributed industrial measurement and control system, and brief introduction of its characteristics is given. Expatiated on the characteristic of CAN bus, munication protocol, and the chips with CAN support. Secondly according to the characteristics of the measurement and control system, provided the overall design plan and the structure feature. Then according to what the system need, mainly design the PC-CAN interface card and the intelligent node. This paper discusses posing