水温控制系统的设计

电子机电论文编号:JD922   论文字数:10637,页数:42

目  录

摘 要 I
Abstract II
第一章 绪论 1
1．1 课题背景 1
1.2相关任务 2
1.3研究内容 2
第2章 方案选取 4
2.1系统结构总框图 4
2.2方案比较论证 4
2.2.1控制模块 4
2.2.2温度数据采集模块 5
2.2.3显示模块 6
2.2.4水温控制模块 7
2.2.4  A/D转换模块 8
第三章 硬件设计 11
3.1 8051单片机主电路 11
3.2按键电路 12
3.3 温控电路 12
第四章 软件设计 13
4.1系统主程序： 13
4.2 PID控制算法简介： 17
第五章 仿真 20
第六章  温控设计的结论及展望 23
致谢 24
参考文献 25
附录 26

摘 要
 目前,水温控制的应用十分广泛.对人们的生活影响很大，基于此要求，本设计利用单片机在温度测量与控制方面的优点对水温的进行控制，采用PID控制算法控制水温的调节。本系统具有温度控制和被控对象实际温度显示功能。可以在40—90℃范围内任意设定被控系统的目标温度，系统能实现自动调整和控制，在环境变化等情况下调整控对象的温度与设定温度值一致，。温度控制的静态误差≤0.5℃，显示的标定温度与被控对象实际温度差≤1℃。
关键词：单片机；PID控制算法；温度测量；水温控制

   
Abstract
       At present, the water temperature control is used widely. And it has great impact on people's lives. Based on this request and the advantages of SCM（Single-Chip Microcomputer） in temperature measurement and control of the water temperature, this design makes use of SCM and PID algorithm to control water temperature. The system can control the temperature and display the actual temperature of the targeted system. One can charge with the goal of temperature between the 40-90℃ within the arbitrary system and the system can automatically adjust and control the temperature. The system can also adjust the temperature of the control targets to the set temperature in different situations, such as environment changes. The static error of the temperature control will less than 0.5 ℃, and actual error of the displayed calibrated temperature and the actual temperature of the controlled object will less than 1 ℃.
Key words: SCM（Single-Chip Microcomputer）; PID control algorithms；temperature measurement； control water temperature