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1、摘要在當今電子社會的發(fā)展中，單片機和PLC已成主導，無論在工業(yè)，農(nóng)業(yè)，科技，航空，各方面都有廣泛的應用，那么我現(xiàn)在就介紹下單片機的情況。單片機即單片微型計算機，單片機有較高的可靠性，使用和維修方便并有良好的性能價格比。其中51單片機是眾多型號單片機的代表,應用于各個領(lǐng)域，非常廣泛。目前市場上大多數(shù)設(shè)備系統(tǒng)都采用專用的遙控編碼和解碼集成電路，但這些電路都只適合用于某一專用電器產(chǎn)品的應用，應用范圍小，本單片機遙控應用系統(tǒng)采用紅外線脈沖個數(shù)編碼。單片機遙控應用系統(tǒng)要求用單片機作為控制芯片制作一個遙控器，另一個單片機控
2、制系統(tǒng)能被遙控操作?？刂葡到y(tǒng)主要由AT89C52單片機、紅外接收電路、+5V電源電路、50Hz交流電過零檢測電路、電機轉(zhuǎn)速及啟/?？刂齐娐返炔糠纸M成。單片機軟件解碼實現(xiàn)了對一個交流電機的開啟及轉(zhuǎn)速控制，電路主要由AT89C2051單片機行列式操作鍵、低功耗空閑方式控制電路、紅外發(fā)射電路、電源等部分組成。關(guān)鍵詞：單片機；CPU；轉(zhuǎn)速控制；電動機IAbstractIndevelopmentofelectronsocietyinthenowadays,thesinglechipmicrocomputerandPLCa
3、lreadyhavebecomealeadingfactor,disregardingdependingonindustry,agriculture,technology,aviation,everyaspecthastheconditionissuingthesinglechipmicrocomputertoapplybroadly,NowIintroducethesinglechipmicrocomputer’scondition.Thesinglechipmicrocomputerisamonolithi
4、cmicrocomputer,thesinglechipmicrocomputerhashigherreliability,usageandthefinefunctionpriceratiobeingmaintainedgoingtothelavatoryandhaving.The51singlechipmicrocomputeramongthemarealotoftypesthemachinerepresentative,applytoeachfields,verybroadly.Greatlymajorit
5、yequipmentsystemalladoptthespecial-purposeremotecontrolcodetobecomereconciledstackingICatpresentonthemarketplace,butthesecircuitsaresuitabletotheapplicationbeingusedforsomeonespecialuseelectricalequipmentproductsonly,Therangeapplyingisminor,thisusingofsingle
6、chipmicrocomputeradopttheinfraredraypulsenumbercode.Remotecontrolusingsingleapplicationsystemrequiresthatthecontrolchipmakingaremotecontrolimplement,anothersinglechipmicrocomputerascontrollingachipcanberemotedcontroloperation.Mainly,fromtheAT89C52singlechipm
7、icrocomputer,infraredreceivingcircuit,+5Vpowercircuits,50Hzalternatingcurrentfaultzeropartssuchascheckingcircuit,theelectricmotorrotationrateandopening/stopingacontrolcircuitiscomposedofnavar.Theopeningandrotationratecontrolcircuitthatsinglechipmicrocomputer
8、softwaredecodinghasrealizedtoaACdynamo,arecomposedofAT89C2051singlechipmicrocomputerdeterminantoperationkey,idlewayoflow-powerconsumptioncontrolcircuit,infraredlaunchpartssuchascircuit,powersour
