摘要随着计算机技术的不断发展，单片机正在不断深入我们的生活，与人们的生活息息相关。在微机技术发展的同时，传统的检测与加热技术已经步入没落，新的由单片机为核心的智能化技术得到了长足的发展，用微机设计出来的产品不仅性能优异，而且更加智能，可以帮助人们省去许多不必要的麻烦。75812

本次设计是以工业现场为背景，以单片机为控制器，实时对温度芯片AD590进行采集。由于AD590产生的是电流信号，所以本次设计先将电流信号放大100倍并转化成电压信号，然后配合AD转化器AD0809将温度信号转化成八位数字量信号以便于单片机进行采集。在加热环节，本设计采用PID技术控制加热棒的导通时间来实现水箱的恒温控制，用户可以通过按键和液晶屏实现人机交互，设置温度等功能。

该论文有图18幅，表14个，参考文献21篇

毕业论文关键词：AD590  PID  单片机

Design of constant temperature water tank based on single chip microcomputer

Abstract With the continuous development of computer technology, single chip microcomputer has been interrelated with us with its role exerting an ever deeper influence on our lives。 At the same time, the traditional detection and heating technology has been in their declining years。 New intelligent technology characterized by single chip microcomputer as its core has achieved rapid progress。  Products designed by microcomputer can help people save a lot of unnecessary trouble because they are not only excellent in performance, but also more intelligent。 And can help people save a lot of unnecessary trouble。

Set under industrial field and based on single chip microcomputer, the design adopted AD590 combined with AD converter AD0809 to do the real-time monitoring of temperature, and then utilized PID control rod heating conduction time to realize water tank temperature control。 Users can realize human-computer interaction, set temperature and perform other functions through the keys and LCD screen。

Key words: AD590  PID   Single chip microcomputer

目录

摘  要 I

Abstract Ⅱ

1。概 述 1

1。1国内外研究现状 1

1。2研究目的及意义 1

1。3本设计结构 2

2。系统的总体设计 3

2。1系统各部分方案与论证 3

2。2系统设计总方案 4

2。3本章小结 5

3。系统的硬件设计 6

3。1测温模块 6

3。2 AD转化模块 7

3。3键盘电路模块 10

3。4液晶屏显示模块 10

3。5 加热模块 15

3。6 控制器 18

3。7 本章小结 21

4。系统的软件设计 22

4。1系统主程序设计 24

4。2显示程序设计 24

4。3 PID模块程序设计 25

4。4本章小结 26

5。系统软硬件调试 27