摘 要：如今随着大家的生活水平的提高，电热水器普及率日渐提升，电热水器本身也具备良好的开发条件，再加上各地政府的大力政策宣传及补贴，这大大加快了电热水器行业的发展。为了弥补传统电热水器的加热慢，温度控制不够精确的缺点，本文以89C51单片机为核心，结合温度传感器及其信号调理电路设计了智能电热水器控制系统，系统包含单片机控制器、温度采集与显示模块、按键输入模块、驱动模块、报警模块。给出了信号流程图及电热水器温度控制软件系统。并进行了仿真与调试，结果表明，该系统能够实现温度控制，设定温度，并且较好实现快速加热，温度超过设定值之后报警。56875

毕业论文关 键 词： 89C51单片机，测温传感器；二分查找算法

Abstract: Today, with the improvement of people's living standards, there is a high penetration of electric water heater .Electric water heater itself is in good developing conditions. Meanwhile, the country's strong policy advocacy and government subsidies also contribute a lot to the development of the electric water heater industry .In order to make up for the low heating efficiency and unstable temperature control of the ordinary water heater,I designed a new water heater temperature control system which can control the temperature with a over-temperature alarm and can be used at any time you need. This design uses 89C51 microcontroller as the core of the water heater systems,as well as the microcomputer controller, display module, keystroke module, drive module and the alarm module . The flow chart of signal will be showed to you and  the electric water heater temperature control software system will be introduced .We will get  relevant results through protues simulation.The experimental results show that the system can realize the temperature controlling and temperature setting ,which also have a higher heating efficiency .The alarm system paly a part when the temperature is higher than the setting point .

Key word: 89C51 microcontroller, temperature sensor; binary search algorithm

目     录

1 引言 5

2 电热水器的简介 6

2.1.1 电热水器概述 6

2.1.2 电热水器组成 6

2.1.3 电热水器的基本工作过程 7

3热水器控制系统框架及设计 8

3.1 系统结构 8

3.1.1 系统的工作流程 8

3.1.2热水器系统组成框图 8

3.1.2 芯片的选择 9

3.2热水器控制系统硬件设计 10

3.2.1 温度传感器测温原理 10

3.2.2 键盘模块的设计 11

3.2.3 驱动模块设计 12

3.2.4 显示模块设计 13

3.2.5 光电耦合输出电路设计 14

3.3热水器控制系统软件设计 14

3.3.1 主程序流程图 14

3.3.2 显示流程图 15

3.3.3 温度检测流程图 16

3.3.4 键盘检测流程图 17

3.3.5 报警及加热模块电路 18

4热水器控制系统proteus仿真 19 89C51单片机电热水器温控系统的设计+电路图:http://www.751com.cn/zidonghua/lunwen_61455.html