基于单片机的智能洗衣机控制系统设计.docVIP

摘要

随着电子技术的飞速开展，人们生活水平的提高及生活节奏的加快，家电产品是越来越深入人们的日常生活。本系统研究的内容就是以单片机为中心的洗衣机控制系统设计,系统采用常见的价廉物美的ATMEL单片机AT89C51作为控制核心。为防止因电源过低或电源间断性供电而引起电脑工作状态混乱，设计了欠压检测保护电路。如有脱水误开盖或脱水不平衡等状况，蜂鸣器鸣叫，提示用户进行处理，保证洗衣机及人身平安。本设计按键较少，采用单端直接输入方式，使电路简单。功率驱动电路先由三极管进行电流放大后再加到继电器的控制极上，作为继电器的触发信号。由继电器实施对电动机、进水阀、排水阀的控制。显示电路采用三只发光二极管作程序选择键功能显示。电源电路经变压，整流，滤波后经三端集成稳压器7805输出稳定的5V直流电压，作为程序控制器的主电源。

关键词:单片机；洗衣机；程序；电源

Abstract

Alongwithelectronictechnologyswiftdevelopment,thepeoplelivingstandard'senhancementandrhythmoflife'squickening,theelectricalappliancesproductismoreandmorethoroughpeople'sdailylife.Thissystemresearch'scontentistakethemonolithicintegratedcircuitasthecentralwashercontrolsystemdesign,thesystemusesthecommonlow-pricequalitymerchandiseATMELmonolithicintegratedcircuitAT89C51totakethecontrolcore.Inordertopreventbecauseofthepowersourcetobeexcessivelyloworthepowersourcediscontinuitypowersupplycausesthecomputeractivestatustobechaotic,hasdesignedtheundervoltageexaminationprotectioncircuit.Ifhasthedehydrationtouncaporthedehydrationbymistakenotbalancedandsoonconditions,thebuzzersounds,toprompttheusertocarryonprocessing,guaranteesthewasherandthepersonalsafety.Thisdesignpressedkeyarefew,selectsthesingleenddirectinputmethod,makestheelectriccircuittobesimple.Thepowerdrivingcircuitcarriesonfirstafterthetriodetubetheelectriccurrentenlargesaddstorelay'scontrolagainonextremely,takesrelay'striggerpip.Implementsbytherelaytotheelectricmotor,theinletvalve,draw-offvalve'scontrol.Thedisplaycircuitusesthreelightemitterdiodestomaketheprogramselectionkeyfunctiondemonstration.Thepowercircuitpassesthroughthelivepressure,therectification,afterthefilter,afterthreeendintegrationmanostat7805outputstable5VDCvoltage,takesprogramtimer'smainpowersource.

keyword:Monolithicintegrated；Thewashing