基于单片机的太阳能热水器控制器的设计 毕业论文

2013届毕业设计(论文)

题 目: 太阳能热水器控制器的设计 学 院: 电子与信息工程 专 业: 电子信息工程 班 级: 电子0901 姓 名: 指导老师: 起讫日期: 2012-11-16～2013-06-14

2013 年 06 月

摘要

太阳能热水器控制器的设计

摘 要

本文分析了太阳能热水器的基本构造并且简单介绍了其工作原理，设计了与之配套的太阳能热水器控制器。该控制器利用SST89E58单片机作为核心器件控制整个系统运作；温度传感器DS18B20可以用来实时检测水温，并将检测到的数据送至单片机进行处理后显示；由4个按键组成的模拟水位用来检测实时水位，当不同的按键按下时，可以模拟出相应的水位；由芯片8155控制的4个数码管是用来显示水位和水温的；由LED灯和蜂鸣器组成的报警电路实现了声光报警，当水位或是水温超出了正常范围，报警电路就会启动；由继电器控制1个LED灯的亮灭来模拟辅助加热系统是否工作。

本篇论文从硬件电路的原理分析、软件编程的实现过程、电路仿真和调试等内容进行分析，实现了控制器的检测、显示和控制功能。

关键词：单片机 DS18B20 8155 数码管 继电器

I

Abstract

The design of controller of solar water heater

Abstract

This paper first introduces the basic structure of solar water heaters and working principle and design a complete solar water heater controller. As the core control system SST89E58 single chip to complete the operation; temperature sensor DS18B20 temperature real-time detection, the microcontroller will detect after data showed four levels of real-time simulation keys are used by different keys, you can simulate the appropriate level, digital tube for display, interface circuit is the chip 8155, by the LED lights and buzzer alarm circuit to achieve a sound and light alarm, water level or water temperature exceeds the normal range, the alarm circuit is activated by relay control LED lights to light and dark analog auxiliary heating system work.

Based on the theoretical analysis of the hardware circuit, how to achieve software programming, circuit simulation and debugging of content analysis, to achieve the detection of the controller, display and control functions.

Keyword: MCU；DS18B20；8155；digital tube；relay

II

目录

目 录

摘要 ............................................................................................................................... I Abstract ....................................................................................................................... II 第一章 绪论 .............................................................................................................. 1

1.1背景.................................................................................................................. 1 1.2 现状分析......................................................................................................... 1

第二章 太阳能热水器的结构及工作原理 ...................................................... 3

2.1太阳能热水器的结构及工作原理.................................................................. 3 2.2 控制器结构及工作原理................................................................................. 4

第三章 控制器硬件设计....................................................................................... 5

3.1 控制器总体设计............................................................................................. 5 3.2 单片机及其外围电路..................................................................................... 6

3.2.1 单片机简介.......................................................................................... 6 3.2.2 晶振电路.............................................................................................. 8 3.2.3 手动复位电路...................................................................................... 8 3.3 显示电路......................................................................................................... 9

3.3.1 数码管简介.......................................................................................... 9 3.3.2 8155简介............................................................................................ 10 3.4温度检测电路................................................................................................ 11

3.4.1 温度传感器DS18B20简介 .............................................................. 11 3.4.2 温度检测电路设计............................................................................ 12 3.5 水位检测电路及自动上水........................................................................... 12

3.5.1 水位检测电路设计............................................................................ 12 3.5.2 自动上水设计.................................................................................... 13 3.6 温度设定及报警电路................................................................................... 14

3.6.1 温度设定............................................................................................ 14 3.6.2 报警电路设计.................................................................................... 14

III

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