本科毕业设计(论文)题目基于单片机立式冷冻箱时间控制器设计学院电气与自动化工程学院年级专业班级1学号学生姓名指导教师职称论文提交日期I基于单片机立式冷冻箱的时间控制器设计摘要随着电子结构产业调整,生产工艺的飞速发展,人们生活水平的不断提高,家用电器逐渐普及,市场对于智能时钟控制系统的需求也越来越大。本论文研究的智能时钟控制系统主要是指家用电器的时钟显示、时间设置、定时开关机的控制系统。本系统是以PIC16F72单片机为核心,4位LED数码管显示时间,使用DS1302时钟芯片完成实时时钟的基本功能,同时利用24C02存储定时数据,实现对立式冷冻箱的定时控制。本文对立式冷冻箱时间控制系统进行了深入的分析和研究,讨论了控制系统的结构、设计方案,介绍了该装置的系统设计、工作原理,详细分析了以PIC16F72单片机为控制单元的硬件电路设计以及实物设计。对时钟显示及定时控制软件设计,进行实验验证,证明了系统方案的可行性。实验结果表明,立式冷冻箱时间控制器设计可靠,而其显示的新颖性往往更能吸引人们的眼球,因此该设计有着十分广阔的实用价值和商业前景。关键词:PIC16F72单片机时钟控制器DS130224C02IIDesignofTimeControlforVerticalFreezersBasedonPICMCUAbstractWiththeelectronicstructureofindustrialrestructuring,therapiddevelopmentoftheproductionprocess,thecontinuousimprovementofpeople'slivingstandardandthehouseholdappliancesgraduallypopular,marketisalsogrowingdemandforintelligentclockcontrolsystem.Theintelligentclockcontrolsystemofthisthesismainlyreferstothehouseholdappliancesoftheclockdisplay,timingsettingandtimerswitch.ThissystemisbasedonPIC16F72microcontrollercore,4LEDdigitaldisplaytime,andusedtheDS1302clockchiptocompletethebasicfunctionsofthereal-timeclock.Alsousedthe24C02tostoretimingdata,toachievethetimingcontrolofverticalfreezers.Thispaperdoesin-depthanalysisandresearchontimecontrolforverticalfreezers,discussesstructureanddesignprojectofthecontrolsystem,introducessystemdesignandworkingprincipleofthedevice,andgivesdetailedanalysisofthehardwarecircuitandphysicaldesignbasedonPIC16F72MCUusedascontrolunit.Thesoftwaredesignisusedtoexperimentwiththeclockdisplayandtimercontrol,andtheresultprovesfeasibilityoftheschemes.Experimentalresultsshowthatdesignoftimecontrolforverticalfreezersisreliable.Noveltyoftheshowiseasiertoattractpeople'sattention,sothisdesignhasaverybroadpracticalvalueandcommercialprospects.Keywords:PIC16F72MCU;Timecontrol;DS1302;24C02III目录1.绪论......................................................................................................................11.1课题研究的背景...................................................................................................................11.2课题研究意义.......................................................................................................................11.3论文章节安排.......................................................................................................................21.4本章小结...............................................................................................................................22.系统基础知识概述及开发环境的建立...............................................................32.1新型绿色电冰箱技术现状及发展方向..............................................................................32.1.1我国电冰箱的现状.......................................................................................................32.2.2绿色电冰箱的发展趋势...............................................................................................32.2PIC单片机的概述................................................................................................................42.2.1PIC单片机介绍.............................................................................................................42.2.2PIC系列单片机特点....................................................................................................42.2.3PIC16F72单片机的引脚及介绍..................................................................................52.3PIC16F72系统开发环境的建立.........................................................................................72.3.1MPLABIDE软件简介.................................................................................................72.3.2烧录器软件介绍...........................................................................................................82.4编程语言概述....................................................................................................................102.5HITECH-PICC编译器......................................................................................................102.6本章小结............................................................................................................................113.时钟控制器的硬件设计....................................................................................123.1系统总体设计框图............................................................................................................123.2控制核心的设计................................................................................................................123.3主系统的供电电路设计....................................................................................................133.3.17805的概述.................................................................................................................133.3.2固定输出的双电源电路.............................................................................................143.4时钟系统电路设计............................................................................................................143.4.1常用时钟日历芯片比较.............................................................................................143.4.2DS1302简介...................................