基于AT89S52单片机控制的智能台灯设计

16201111JOURNALOFSOUTHERNVOCATIONALEDUCATIONVol．1No．6Nov．20112011－09－101982－。1976－。AT89S52510430AT89S52。30cm3。AT89S52TP274A2095－073X201106－0015－05、。。。1220V。POWER/。AUTO/MENU。“AUTO/MENU”MENU“+”“－”30cm3AUTOMENU554m。、1。220V、+15V、+12V、+5V、－12V55540KHz74LS04。TL084LM393C21VR11161LM393MCULEDLED。2。MCUMCUAT89S52、CMOS88KFlash。3。23MCU555AT89S5240KHZ4。TL084LM393。4M=S*t/2MS5。6AT89S52175LEDAT89S52PT4115DIMPWMLEDLED26。6LED、KeilCC。、、。7。7#include＜reg52．h＞181#defineuintunsignedint#defineucharunsignedcharsbitkey=P2^2sbitkey1=P2^3sbitled=P1^0uintpwm=0x7fvoiddelaymsuintxmsvoiddelayuinttvoidmainTMOD=0x21TH0=0xfcTL0=0x66TH1=pwmTL1=0EA=1ET0=1ET1=1TR0=1while1doifpwm=0xffpwm++delayms10whilekey==0doifpwm=0x02pwm－－delay10whilekey1==0voidtime0interrupt1TR0=0TH0=0xfcTL0=0x66TH1=pwmTR1=1led=1voidtime1interrupt3TR1=0led=0voiddelaymsuintxms//xmsuintijfori=xmsi＞0i－－forj=123j＞0j－－voiddelayuchartwhilet－－。8。8voidPWM_SetuintHzucharDifD＞1006AT89S5219D=100Hz=1000000/HzHigt=65536－D*0．01*HzLow=65536－100－D*0．01*Hzvoid_TIME1_voidinterrupt3//1PWMEA=0TR1=0PWM=PWMifPWMTH1=Higt＞＞8TL1=HigtPWM=1elseTH1=Low＞＞8TL1=LowPWM=0ifflag==3sm+=1ms+=1TR1=1EA=140KHZMCU3。、。PWM。、。。。45。30。1．BISS0001J．2010924－26．2．AT89S52J．20091118－19．3．M．200535－40．AT89S52MicrocontrollerBasedControlofIntelligentDesignLampZHANGRen-chaoLIUJin-longGuangzhouInstituteofRailwayTechnologyGuangzhou510430ChinaAbstractThispaperamicrocontrollerAT89S52－basedintelligentcontroloftheultrasonicranginglampdesign．Itisbasedonreadinglampnexttosomeoneandtheintensityoflightfromthelineofcontrollampoffandonandtheuseofultrasonicsensorsmeasuresthedistancebetweentheuserandthelamp．Whenthedistanceislessthan30cmbycontrollingthelightflashingtheuserisremindedtokeepthedistancewiththelampsoastoprotecteyesightandcorrectposture．KeywordsAT89S52ultrasonicwaveintelligentlampdesign