温度控制器的设计

温度控制器的设计(AT89S51单片机)(程序+电路图+原理图+PCB图)☆

编辑：Nancy 来源：毕业设计网 作者：Team 指数：3308 编号：344120101117 摘 要

随着科技的不断进步〖资料来源:毕业设计(论文)网 doc.guandang.net〗在工业生产中温度是常用的被控参数，而采用单片机对这些被控参数进行控制已成为当今的主流。本文介绍了以AT89C51单片机为核心的数字温度测量及自动控制系统的设计，该温度控制器可以实时显示和设定温度，实现对温度的自动控制。其组成部分为：AT89S51单片机、DS18B20智能数字温度传感器、键盘与显示电路、温度控制电路。高精度的DS18B20温度传感器作为温度检测元件，LED数码管并行动态显示作为显示电路，单片机通过对信号进行相应处理，从而实现对所测温度进行控制。当温度比设定温度小时，控制器接通电加热设备，当温度大于等于设定温度时，控制器断开电加热设备。此外，文中还介绍了该温度控制器的软件设计部分，主要模块包括：数码管显示程序、按键处理程序、温度信号处理程序、继电器控制程序。主程序通过调用各个上述子程序来完成所有的温度控制器功能。在此基础上本文还提出了系统软硬件抗干扰措施和系统软硬件及整机调试方案。

该温度控制器具有控制方便、简单的特点，可以实现对温度的高精度控制，并且可以提高被控系统的技术指标。

关键词：AT89C51单片机 ；DS18B20温度传感器 ；键盘和显示

ABSTRACT

As the technology advances in industrial production in the temperature is charged with common parameters, and the use of those charged with SCM to the parameters of control has become the mainstream. This page introduced a digital temperature measurement and control system, which used AT89C51 mircocontroller as the core. The temperature controller has a real-time display and temperature can be set anytime. And it controls the temperature automaticly. It is a major component of: AT89S51 mirco controller, DS18B20 Intelligent Digital Temperature Sensor, keyboard and display circuit, temperature control circuit. In order to realize control the temperature which is measured. Precision temperature sensor DS18B20 has been used as the temperature sensor, LED digital tube has been used as the display circuit in parallel dynamic way,mircocontriller has been used to deal

〖资料来源：56DOC.COM 毕业设计(论文)网〗

with the signal. When temperature is less than the set temperature, the controller would make the electric heating equitment connected, otherwise, the contreller would cut down the electric heating equitment. In addition, the page also describes the software design part of the temperature controller:LED display processes, keyboard processes, temperature signals processes, relay control processes are all included in the main modules. Main program completed all of the temperature controller teatures by calling all the above modules. On this basis, this paper also developed system software and hardware anti-interference solutions and overall debugging solutions.

The design of the temperature control is convenient and simple characteristics’, can achieve high precision control of temperature, thus raising the system was charged with the technical indicators.