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1、摘要在當(dāng)今電子社會的發(fā)展中,單片機(jī)和PLC已成主導(dǎo),無論在工業(yè),農(nóng)業(yè),科技,航空,各方面都有廣泛的應(yīng)用,那么我現(xiàn)在就介紹下單片機(jī)的情況。單片機(jī)即單片微型計算機(jī),單片機(jī)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(jī)是眾多型號單片機(jī)的代表,應(yīng)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(yīng)用,應(yīng)用范圍小,本單片機(jī)遙控應(yīng)用系統(tǒng)采用紅外線脈沖個數(shù)編碼。單片機(jī)遙控應(yīng)用系統(tǒng)要求用單片機(jī)作為控制芯片制作一個遙控器,另一個單片
2、機(jī)控制系統(tǒng)能被遙控操作??刂葡到y(tǒng)主要由AT89C52單片機(jī)、紅外接收電路、+5V電源電路、50Hz交流電過零檢測電路、電機(jī)轉(zhuǎn)速及啟/??刂齐娐返炔糠纸M成。單片機(jī)軟件解碼實(shí)現(xiàn)了對一個交流電機(jī)的開啟及轉(zhuǎn)速控制,電路主要由AT89C2051單片機(jī)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(jī);CPU;轉(zhuǎn)速控制;電動機(jī)IAbstractIndevelopmentofelectronsocietyinthenowadays,thesinglechipmicrocomputerand
3、PLCalreadyhavebecomealeadingfactor,disregardingdependingonindustry,agriculture,technology,aviation,everyaspecthastheconditionissuingthesinglechipmicrocomputertoapplybroadly,NowIintroducethesinglechipmicrocomputer’scondition.Thesinglechipmicrocomputerisamon
4、olithicmicrocomputer,thesinglechipmicrocomputerhashigherreliability,usageandthefinefunctionpriceratiobeingmaintainedgoingtothelavatoryandhaving.The51singlechipmicrocomputeramongthemarealotoftypesthemachinerepresentative,applytoeachfields,verybroadly.Greatl
5、ymajorityequipmentsystemalladoptthespecial-purposeremotecontrolcodetobecomereconciledstackingICatpresentonthemarketplace,butthesecircuitsaresuitabletotheapplicationbeingusedforsomeonespecialuseelectricalequipmentproductsonly,Therangeapplyingisminor,thisusi
6、ngofsinglechipmicrocomputeradopttheinfraredraypulsenumbercode.Remotecontrolusingsingleapplicationsystemrequiresthatthecontrolchipmakingaremotecontrolimplement,anothersinglechipmicrocomputerascontrollingachipcanberemotedcontroloperation.Mainly,fromtheAT89C5
7、2singlechipmicrocomputer,infraredreceivingcircuit,+5Vpowercircuits,50Hzalternatingcurrentfaultzeropartssuchascheckingcircuit,theelectricmotorrotationrateandopening/stopingacontrolcircuitiscomposedofnavar.Theopeningandrotationratecontrolcircuitthatsinglechi
8、pmicrocomputersoftwaredecodinghasrealizedtoaACdynamo,arecomposedofAT89C2051singlechipmicrocomputerdeterminantoperationkey,idlewayoflow-powerconsumptioncontrolcircuit,infraredlaunchpartssuchascircuit,powersour