温度自动控制-系统的设计_毕业论文.doc

温度自动控制系统的设计 摘 要 随着科技的不断进步，在工业生产中温度是常用的被控参数，而采用单片机来对这些被控参数进行控制已成为当今的主流。本文介绍了数字温度测量及自动控制系统的设计。阐述了以AT89C52单片机为核心的温度控制系统的工作原理和设计方法。主要组成部分：AT89C52单片机、温度传感器、显示电路、温度控制电路。它可以实时的显示和设定温度，实现对温度的自动控制。而且设有超温报警程序。测试表明，本设计对温度的控制有方便、简单的特点，大幅提高了被控温度的技术指标。温度信号由温度芯片DS18B20采集，并以数字信号的方式传送给单片机。文中介绍了该控制系统的硬件部分，包括：温度检测与温度控制电路。单片机通过对信号进行相应处理，从而实现温度控制的目的。 关键词： 温度自动控制，AT89C52，DS18B20，PID ABSTRACT With the development of science and technology, temperature is used to be controlled parameter in industrial production. Controlling controlled parameter by microcontroller has been main trend in todays society. This paper introduces the design of digital temperature measurement and automatic control system .It consists of AT89C52 microcontroller, temperature sensor, show circuit and temperature control circuit. It is able to display and set temperature in real-time. The purpose is to achieve the control of temperature. Besides, it has over- temperature alarm program. Tests show that this design not only controls temperature conveniently and simply but also improve the technical indicators of controlled temperature greatly. With as the core of microcontroller, this design achieves the control of temperature. Temperature signal is collected by temperature chip DS18B20 and transmitted to microcontroller in the form of digital signal. This paper introduces the hardware of the system including temperature detection and temperature control circuit. Microcontroller achieves the purpose of temperature control by processing sign correspondingly. KEY WORDS: automatic temperature control, AT89C52 , DS18B20, PID 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc312947016 前 言 PAGEREF _Toc312947016 \h 1 HYPERLINK \l _Toc312947017 第1章 系统总体设计 PAGEREF _Toc312947017 \h 2 HYPERLINK \l _Toc312947018 1.1 系统设计任务与要求 PAGEREF _Toc312947018 \h 2 HYPERLINK \l _Toc312947019 1.1.1 系统设计任务与要求 PAGEREF _Toc312947019 \h 2 HYPERLINK \l _Toc312947020 1.1.2 重点研究内容 PAGEREF _Toc312947020 \h 2 HYPERLINK \l _Toc312947021 1.1.3 实现途