基于RS485网络的数据采集系统设计 通信工程等专业毕业设计 毕业论文.doc

摘要 远程测控技术在现代科学技术、工业生产和国防等诸领域中的应用十分广泛。测控技术的现代化，已被公认为科学技术和生产现代化的重要条件和明显标志。随着计算机技术、通信技术和电子技术的飞速发展，在现代远程测控领域中，各先进的测控技术、测控设备和远程通信手段层出不穷。本文主要是介绍基于RS-485总线的网络控制系统，该系统由前端和后台两部分组成，前端包括温度采集器和电机控制器两个模块；而后台则是基于RS-485总线由PC机进行远程测控。实现了对远程温度的检测传输和电机正反转控制。整个系统具有结构简单、可靠性高、功能灵活多样、造价低廉等优点，可以应用于多种场所的各种远程测量控制。 关键词：RS-485总线，温度采集器，电机控制器，远程测控技术，PC机 Abstract The remote monitoring and control technology is applied widely in the modern science and technology, the industrial production and the national defense and in other various domains. The remote monitoring and control technology modernization has been recognized as the important condition and the clear indication of the science and technology and the production modernization. Along with the incresing development of the computer technology, the communication and the electronic technology, in the modern remote monitoring and control domain there are all kinds of advanced monitoring and control technology and equipment and the long-distance means of communication. This article mainly intoduces bus network control system based on the RS-485,. The system is composed by front end and the backstage two parts. Front end includes temperature gathering and electrical machinery controller two modules; But the backstage carried on the remote monitoring and control based on the RS-485 bus by PC machine. Has realized is reversing the control to the long-distance temperature examination transmission and the electrical machinery. The overall system has the structure simply, the reliability high, the function nimble diverse, the construction cost is inexpensive and so on the merit, may be supposed to use in the many kinds of places each kind of long-distance survey control. Key words: RS-485 bus, temperature gathering, electrical machinery controller, long-distance observation and control technology, PC machine 第一章 绪论 1.1 课题背景及研究意义 随着我们的工业环境越来越复杂，工程师们在让这些设备和环境越来越复杂的同时，也不断的努力让它们越来越“简单”——流线型的装配、简单的人机交互。正是他们对这个看似矛盾的理想的追求，才使我们今天出现了这么多的智能化设备。上述这一切都离不开数据