基于单片机的数字温控计.docVIP

摘 要 随着控制理论和电子技术的发展，工业控制器的适应能力增强和高度智能化正逐步成为现实。其中以单片机为核心实现的数字控制器因其体积小、成本低、功能强、简便易行而得到广泛应用。PLD温度控制器作为一种重要的控制设备，在化工、食品等诸多工业生产过程中，得到广泛的应用。本文主要讨论在过程控制中得到广泛应用的数字PLD控制在单片机温度控制系统中的应用。 本文详细阐述了基于单片机的温度控制系统的硬件组成、接口电路及程序编译。并且充分考虑到系统的可靠性，采取相应的保护措施。通过设计表明本文所论述的基于单片机的温度控制系统的设计的合理性及有效性。 关键字：单片机；PLD温度控制器；温度控制系统 Abstract Along with control theory and electronics technical development, the orientation ability of the industrial controller the to build up and high intelligence turn to just and gradually become reality. Among them with list slice machine for the core carry out of the number controller get an extensive application because its physical volume is small, low cost and strong function and simple to easily go. The PLD temperature controller is a kind of important control equipments, at chemical engineering, and food...etc. many industrial production line in, get an extensive application. This text mainly discusses in the process to control in the number PLD control of getting the extensive application the application within the machine temperature control system is at the list slice. This text elaborated in detail the hardware controlling system according to the temperature of the list slice machine constitute, connects a peoples electric circuit and procedure to edit and translate. And full in consideration of the credibility of the system adopt homologous protection measure. Pass a design enunciation originally what text discusses according to list the temperature of the slice machine control system of the rationality and usefulness of design. Key words: The list slice machine, PLD temperature controller , temperature controls system 目 录 1 绪论 1 1.1概述 1 1.2温度测控技术的发展 1 1.3系统方案设计思路 2 1.4论文主旨及章节安排 2 2 单片机技术简介 4 2.1单片机介绍 4 2.2 MCS-51单片机组成及结构 4 2.3 MCS-51单片机的指令系统 5 2.4单片机温度控制系统的组成及工作原理 6 2.5 AT89C52概述 6 3 温控原理及温控传感器选择 11 3.1 PID控制温度控制器原理 11 3.2温度传感器简介 12 3.3设计内容及性能指标 12 3.4温度传感器的选择 13 3.5 温控传感器介绍 13 3.5.1 DS18B20 简单介绍 13 3.5.2 DS18B20 使用中的注意事项 14 3.5.3 DS18B20 内部结构 1