文档介绍：摘要
现场总线是连接智能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。现场总线的应用研究日益广泛,是当今自动化领域技术发展的热点之一。其中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。CAN总线因易于开发等优点而受到普遍重视。现代监控网正向远程、大型、发杂监控网发展,它把计算机技术、通讯技术和控制技术结合起来,是一种全分散、全数字、全开放的新型监控技术。
本文介绍一种以CAN总线为基础的能够实现火灾自动报警的火灾监控系统的实现方法,包括总体方案、网络硬件与软件设计。系统中采用了计算机、控制通信、网络和电路设计等多领域的较先进的技术,使系统具有较完备的控制功能和丰富的监测功能,具有稳定的性能、友好的界面和优良的性能价格比。该监控网络集成了多种传感器,在信息传输的安全性、准确性、实时性方面达到了较高的要求,能满足大部分的监控需要。
关键词:CAN总线;分布式控制;火灾自动报警;监控系统
Abstract
Fieldbus is a kind of digital, bi-directional transmission and multi-work which connects intelligent equipment and automatic system. It is the production of synthesis and integration puter technology , communication technology and control technology .The application study of the fieldbus is ing more and more wider .It's is an open and distributed new pattern and a focus of automation .CAN is a kind of fieldbus and a work which supports distributed and real-time control effectively. CAN bus is focused on as its easy development. The advanced work is developing to remote, giant plex, it associates puter, communication and control technology, it's a new monitoring technology of full decentralized, full digital and full open.
This paper introduces the implementation way of a kind of fire work based on CAN bus, Including the design of the overall plan, the hardware and software work. Many relatively advanced techniques which are involved puter, control, communication, network and circuit design techniques are based in the system. The system possesses good capabilities of control and motoring, steady performance, friendly interface and good performance-cost ratio. The system had been used in practice and desirable results are achieved.
Keywords: CAN bus; distributed control; fire-detecting automation ; monitoring system
目录
摘要 I
Abstract II
1 绪论 1
1
1
2
2系统的硬件说明 3
3
STC89C51单片机简介 3
最小系统原理图 3
CAN通信电路模块 4
CAN总线简介