基于51单片机的智能热水器控制系统 - 图文

目 录

摘 要 .............................................................................................................................I ABSTRACT ................................................................................................................. II 引言 ................................................................................................................................ 1 1 智能热水器控制系统的总体设计方案 .................................................................... 1 1.1 方案的分析与选择 ............................................................................................ 1 1.2 系统总体设计概述 ............................................................................................ 2 1.3 各功能模块介绍 ................................................................................................ 3

1.3.1 控制模块 .................................................................................................. 3 1.3.2 显示模块 .................................................................................................. 3 1.3.3 输入模块 .................................................................................................. 4 1.3.4 其它模块 .................................................................................................. 5 1.4 本章小结 ............................................................................................................ 6 2 硬件电路的设计与实现 .......................................................................................... 6 2.1 单片机最小系统硬件电路设计 ........................................................................ 6 2.2 显示模块硬件电路设计 .................................................................................... 7 2.3 温度传感器DS18B20电路设计 ...................................................................... 7 2.4 电子式水位开关硬件电路设计 ........................................................................ 8 2.5 时钟芯片电路设计 ............................................................................................ 8 2.6 声光报警电路设计 ............................................................................................ 9 2.7 按键设置模块电路设计 .................................................................................. 10 2.8 电源和开关模块设计 ...................................................................................... 10 2.9 本章小结 .......................................................................................................... 11 3 热水器控制系统的软件设计与算法实现 .............................................................. 11 3.1 软件总体流程图 .............................................................................................. 11 3.2 显示模块程序设计 .......................................................................................... 12

3.2.1 写命令子函数 ........................................................................................ 12 3.2.2 写数据子函数 ........................................................................................ 13 3.3 温度传感器模块程序设计 .............................................................................. 14 3.4 时钟芯片相关程序设计 .................................................................................. 14

3.5 按键设置程序设计 .......................................................................................... 15 3.6 主程序和中断服务程序设计 .......................................................................... 15 3.7 本章小结 .......................................................................................................... 16 4 测试、总结与评价 .................................................................................................. 16 4.1 软件平台仿真测试 .......................................................................................... 16 4.2 面包板电路搭建测试 ...................................................................................... 17 4.3 系统方案总结与评价 ...................................................................................... 17 5 结束语 ...................................................................................................................... 17 参考文献 ...................................................................................................................... 19 致 谢 .......................................................................................................................... 20

基于51单片机的智能热水器控制系统

摘 要

随着科技的进步和人们生活水平的不断提高，热水器越来越普遍地走进千家万户，给人们的生活带来了极大的方便。同时，人们对热水器的智能化和安全性都提出了更高的要求。这就要求热水器具有一个智能控制系统，能够自动获取当前水温和水位信息，判断实际温度与预设温度关系，从而实现加热的自动控制。

本文提出了一种基于51单片机的智能热水器控制系统的解决方案，该方案采用DS18B20单线数字温度传感器来对水温进行检测，使用DS1302时钟芯片实现计数和定时功能，同时加入了水位判断和报警设计。用户通过按键和显示屏来完成系统的参数设置，从而实现定时加热、自动恒温等功能。

关键词：单片机，热水器，控制，DS18B20

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The intelligent water heater control system based on 51 single chip microcomputer

Abstract

With the progress of science and technology and the continuous improvement of people's living standard, the water heater is more and more widely into the thousands, has brought great convenience to people's life.At the same time, people also hope that the water heater is not just simply by switch or button commands, to heat water, also can according to the people set the temperature of the automatic constant temperature, timing, heating, automatic judgment function such as water level, the water heater of intelligence and security are put forward higher requirements.This requires a water heater has a intelligent control system, can automatically access to current information, water temperature and water level determine the actual temperature and the preset temperature relations, so as to realize the automatic control of heating.

This paper puts forward a kind of intelligent water heater control system based on 51 single chip solution, the scheme adopts DS18B20 single line digital temperature sensor to test the water temperature, using DS1302 clock chip realize counting and timing functions, at the same time joined the water judgment and alarm design.The user through the buttons and screen to complete the system parameter setting, so as to realize the function such as timing, automatic constant temperature heating.

Key Words：single chip microcomputer, water heater, control, DS18B20

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