文档介绍：毕业论文(设计) 题目: 基于单片机的 PID 温度控制系统设计( Title ): The design of control system of temperature based on PID and SCM 基于单片机的 PID 温度控制系统设计摘要随着生活的发展时代的变迁,温度似乎由原来的不可控量变到今天的可控量。正是因为这样的变化凸显控制温度重要性和意义性。而工业生产中都用到电热炉、坩锅电阻炉和温控箱,于是单片机就成为了它的核心搭档,不仅可以解决繁琐复杂的人工控制还可以提高别控对象的精准度和良好指标;因此,微电脑化温度控制技术正在广泛的被人们接纳。本作品是恒温箱温度控制系统设计,可用在生产也可以用在科研实验还可以用在医院里。在温度时常变化环境中使用恒温箱,可以使一定范围的温度恒定在特定温度下,从而适应生活和工作。而且还可以随心所欲的设定温度来达到你想要的那种环境。本论文首先是介绍恒温控箱的工作原理,以硬件为基础软件为核心的介绍开来的,几种对于硬件我还会以流程框图来介绍,这样能让我们能容易的明白它的工作过程,和各个模块各自实现的功能。先是硬件我们用了 STC89C51 单片机,它具有内部集成数模转换和封装小的优点,再加上 DS18B20 的温度传感器。软件的方面,采用了PID 的精准算法,不仅实现了超调小、线性控制精度高、反应快和实现成本低等的优点。在使用的时候用户先根据自己的要求在按键上选择自己想要达到的温度,然后由单片机采集测温元件的温度输入与反馈进行比对和准确的 PID 算法,接着马上输出信号让升温器件工作升温。在这里 PID 成为软件的核心。如果说 PID 调节控制恒温箱的温度,使温度在理想范围内稳定。在相同的情况下,在整定 PID 使温控箱达到最理想的效果过程中,使它能能更快准稳的调节温度,你就会发现和了解什么样的调节参数更适合更快达到效果。关键词:恒温控制,单片机,数字 PID 算法 The design of control system of temperature based on PID and SCM Abstract With the development of the life and times of change, from the original tempe rature seems to be not controlled quantity toa controlled amount of today. Iti s precisely because of this change highlights the importance and significance oft emperature control. And industrial production are used in electric furnace, cruci ble resistance furnace and the temperature control box, so the SCM has e a core partner of it, not only can solve the artificial control plex object s but also can improve the control precision and not a good indicator therefor e, the puter temperature control technology is being widely accepted by people. This work is the constant temperature control system design of temperatur e, can be used in production and can also be used in scientific experiments can a lso be used in the hospital. In the constant temperature box temperature often ch ange to use environment, can make the temperature range ata certain temperatur e, so as to adapt to the life and work. But also can set the temperature environ ment in which you want to achieve. This paper first describes the working principl