基于单片机的电热水器定时控制器设计—毕业生毕业论文.docx

西南科技大学本08机制毕业生毕业论文题 目: 基于单片机的电热水器定时控制器设计 院系名称：电子电气工程系 专业班级：本08机制电 学生姓名：闻 明 学 号：070109351134指导教师：张国勤 教师职称： 讲师 2010 年 9 月 10 日摘要电热水器定时控制器设计系统以ATMEL的AT89S52单片机为核心构成整个控制系统。根据设计要求，系统对水温进行测量、预定加热水温、检测水温；用LCD实时显示当前温度或时间，以及显示当前系统工作状态；监视系统是否发生故障或工作在危险状态；当发生故障或危险时，及时发出警报和切断系统电源；根据要求调整或设置温度（20℃～60℃）和时间。通过以AT89S52单片机为核心并辅以外围电路的设计方法实现了低成本的控制要求。该定时时控制器可定时控制并显示有关参数，在满足系统要求的同时，又具备简单、经济之特点。此外，灵活的键盘输入方式来设定参数可增加系统的灵活性。关键词：电热水器 AT89S52单片机 控制系统 漏电检测 ADC0809Title Base on SCM Immersion Heater Time Monitor Design AbstractElectric boiler fixed time controller design system take ATMEL AT89S52 monolithic integrated circuit as core constitution always control system. According to the design requirements, the system carries on the survey, the predetermined heating water temperature, the examination water temperature to the water temperature; With LCD real time display current temperature or time, as well as demonstration current system active status; Whether the supervisory system does break down or the work in the critical condition; When breaks down or the danger, sounds the warning and the cut-off system power source promptly; According to request adjustment or establishment temperature (20℃~60℃) and time. Through and auxiliary has realized the low cost control request take at89S52 monolithic integrated circuit as the core by peripheral circuits design method. This fixed time time controller may the timed control and demonstrates the related parameter, while satisfies the system request, also has, characteristic of simply the economical. In addition, the nimble keyboard entry way setup parameter may increase systems flexibility.Key words: immersion heater, AT89S52, control system, creepage detect,ADC0809 目 次1 绪论21.1 应用前景21.2 设计意义21.3 设计内容和要求22 系统总体设计22.1 AT89S52单片机简介22.2 LCD（JHD162A系列）介绍22.3 Protel99设计原理图概述23 控制系统硬件设计23.1 系统设计方案23.2 硬件设计模块23.2.1 温度检测模块23.2.2 显示电路模块23.2.3 按键电路模块23.2.4 漏电检测与加热模块23.2.5 开关机及报警模块23.2.6 并口下载电路23.2.7 加水和放水电路23.2.8 整体电路图：24 控制系统软件设计24.1 主程序流程图