1、timesavemonitoringdata.Analarmwillgivenbyifexceedsupperlowerlimitvaluewhichsetdiscretionarilythenautomaticisachieved,thusachievedintelligentlywithinacertainrange.Basingsystem,iteasymakevarietyothernon-linearsystemssolongassoftwaredesignreasonablychanged.hasbeenprovedaccurate,reliablesatisfiedthrough
2、fieldpractice.KEYWORDS:AT89C51;controller;DS18B20;1INTRODUCTIONveryimportantparameterinhumanlife.Inmodernsociety,(TC)notonlyusedindustrialproduction,butalsowidelyfields.Withimprovementlifequality,wefindTCappliancehotels,factorieshomewell.Andtrendthatbetterservewholegreatsignificancemeasuretemperatur
3、e.DS18B20,thiscontrolsconditionintelligently.showLCD,data;automaticallywhenvalue.Bydoingkeepunchanged.highanti-jamming,precisionflexibledesign;fitsruggedenvironment.Itmainlypeoplesimprovequalityworkversatile,convenientextendusesystem.Soprofoundimportance.generaldesign,hardwarecovered.1.1Introduction
4、 The8-bitCHMOSmicrocontrollersdesignedhandlehigh-speedcalculationsfastinput/outputoperations.MCS51typicallyforeventsystems.Commercialapplicationsincludemodems,motor-controlsystems,printers,photocopiers,airconditionerdiskdrives,medicalinstruments.automotiveindustryengine-controlairbags,suspensionanti
5、lockbraking(ABS).especiallywellsuitedbenefitfromitsprocessingspeedenhancedon-chipperipheralset,suchpower-traincontrol,vehicledynamicsuspension,braking,stabilityapplications.Becausethesecriticalapplications,marketrequirescost-effectivewithlowinterruptlatencyresponse,abilityservicenumberdrivenintegrat
6、edperipheralsneededrealCPUaboveaveragepowersinglepackage.financiallegalriskhavingdevicesoperateunpredictablyhigh.Oncemarket,particularlymissionanautopilotoranti-lockmistakesfinanciallyprohibitive.Redesigncostsrun$500K,muchmorefixmeans2backannotatingacrossproductfamilysharesamecoreand/orflaw.addition
7、,replacementscomponentsextremelyexpensive,sealedmodulestotalseveraltimescomponent.Tomitigateproblems,essentialcomprehensivetestingcontrollerscarriedoutatbothcomponentlevelunderworstcaseenvironmentalvoltageconditions.Thiscompletethoroughvalidationnecessitateswell-definedprocessproperenvironmenttoolsf
8、acilitateexecutesuccessfully.IntelChandlerPlatformEngineeringgroupprovidespostsilicon(SV)variousmicro-controllersprocessors.brokenintothreemajorparts.typedeviceapplicationrequirementsdeterminetypesperformeddevice.1.2followingstandardfeatures4KbytesFlash,128bytesRAM,32I/Olines,two16-bittimer/counters,fivevectortwo-levelarchitecture,fulldupleser-ialport,oscillatorclockcircuitry.staticlogicoperationdownzerofrequencysupportsso
copyright@ 2008-2022 冰豆网网站版权所有
经营许可证编号:鄂ICP备2022015515号-1