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1、附录A外文翻译原文DesignoftheTemperatureControlSystemBasedonAT89S51Abstract::TheprincipleandfunctionsofthetemperaturecontrolsystembasedonmicrocontrollerAT89S51arestudied,andthetemperaturemeasurementunitconsistsofthe1-WirebusdigitaltemperaturesensorDS18B20.Thesystemcanbeexpectedtod
2、etectthepresettemperature,displaytimeandsavemonitoringdata.Analarmwillbegivenbysystemifthetemperatureexceedstheupperandlowerlimitvalueofthetemperaturewhichcanbesetdiscretionarilyandthenautomaticcontrolisachieved,thusthetemperatureisachievedmonitoringintelligentlywithinace
3、rtainrange.Basingonprincipleofthesystem,itiseasytomakeavarietyofothernon-linearcontrolsystemssolongasthesoftwaredesignisreasonablychanged.Thesystemhasbeenprovedtobeaccurate,reliableandsatisfiedthroughfieldpractice.KeyWords:AT89S51;Microcontroller;DS18B20;TemperatureI.Intr
4、oductionTemperatureisaveryimportantparameterinhumanlife.Inthemodernsociety,temperaturecontrol(TC)isnotonlyusedinindustrialproduction,butalsowidelyusedinotherfields.Withtheimprovementofthelifequality,wecanfindtheTCapplianceinhotels,factoriesandhomeaswell.AndthetrendthatTCw
5、illbetterservethewholesociety,soitisofgreatsignificancetomeasureandcontrolthetemperature.BasedontheAT89S51andtemperaturesensorDS18B20,thissystemcontrolstheconditiontemperatureintelligently.Thetemperaturecanbesetdiscretionarilywithinacertainrange.ThesystemcanshowthetimeonL
6、CD,andsavemonitoringdata;andautomaticallycontrolthetemperaturewhentheconditiontemperatureexceedstheupperandlowerlimitvalue.Bydoingsoitistokeepthetemperatureunchanged.Thesystemisofhighanti-jamming,highcontrolprecisionandflexibledesign;italsofitstheruggedenvironment.Itismai
7、nlyusedinpeople'slifetoimprovethequalityoftheworkandlife.Itisalsoversatile,sothatitcanbeconvenienttoextendtheuseofthesystem.Sothedesignisofprofoundimportance.Thegeneraldesign,hardwaredesignandsoftwaredesignofthesystemarecovered.Ⅱ.SYSTEMGENERALDESIGNThehardwareblockdiagram
8、oftheTCisshowninFig.1.Thesystemhardwareincludesthemicrocontroller,temperaturedetectioncircuit,ke
