单片机温度控制英文文献及翻译单片机温度控制英文文献及翻译单片机温度控制英文文献及翻译TemperatureControlUsingaMicrocontroller:JamesS。McDonaldDepartmentofEngineeringScienceTrinityUniversitySanAntonio,TX78212AbstractThispaperdescribesaninterdisciplinarydesignprojectwhichwasdoneundertheauthor’ssupervisionbyagroupoffourseniorstudentsintheDepartmentofEngineeringScienceatTrinityUniversity.Theobjectiveoftheprojectwastodevelopatemperaturecontrolsystemforanair—filledchamber.Thesystemwastoallowentryofadesiredchambertemperatureinaprescribedrangeandtoexhibitovershootandsteady—statetemperatureerroroflessthan1degreeKelvinintheactualchambertemperaturestepresponse.Thedetailsofthedesigndevelopedbythisgroupofstudents，basedonaMotorolaMC68HC05familymicrocontroller，aredescribed。Thepedagogicalvalueoftheproblemisalsodiscussedthroughadescriptionofsomeofthekeystepsinthedesignprocess。Itisshownthatthesolutionrequiresbroadknowledgedrawnfromseveralengineeringdisciplinesincludingelectrical,mechanical,andcontrolsystemsengineering.1IntroductionThedesignprojectwhichisthesubjectofthispaperoriginatedfromareal—worldapplication.AprototypeofamicroscopeslidedryerhadbeendevelopedaroundanOmegaTMmodelCN—390temperaturecontroller，andtheobjectivewastodevelopacustomtemperaturecontrolsystemtoreplacetheOmegasystem。Themotivationwasthatacustomcontrollertargetedspecificallyfortheapplicationshouldbeabletoachievethesamefunctionalityatamuchlowercost,astheOmegasystemisunnecessarilyversatileandequippedtohandleawidevarietyofapplications.ThemechanicallayoutoftheslidedryerprototypeisshowninFigure1.Themainelementofthedryerisalarge，insulated，air-filledchamberinwhichmicroscopeslides,eachwithatissuesampleencasedinparaffin,canbesetoncaddies。Inorderthattheparaffinmaintaintheproperconsistency，thetemperatureintheslidechambermustbemaintainedatadesired（constant）temperature.Asecondchamber（theelectronicsenclosure)housesaresistiveheaterandthetemperaturecontroller，andafanmountedontheendofthedryerblowsairacrosstheheater,carryingheatintotheslidechamber。Thepurposeofth