基于单片机控制温湿度的系统外文及翻译文档格式.docx

基于单片机控制温湿度的系统外文及翻译文档格式.docx

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基于单片机控制温湿度的系统外文及翻译@#@NewEnvironmentParametersMonitoringAndControlSystemForGreenhouseBasedOnMaster-slaveDistributed@#@Abstract--Accordingtotheactualneedofmonitoringandcontrolofgreenhouseenvironmentparametersinruralareas,amaster-slavedistributedmeasurementandcontrolsystemisdesigned,inwhichPCistakenasthehost.ThesystemconsistsofPC,soilmoisturemeasurementandcontrolmodule,temperatureandhumidity,andCO2monitoringandcontrolmodule.Inthesystem,PChaslargeamountofdatastoragewhichiseasytomakeuseoffuzzycontrolexpertsystem,configurationsoftware-KingViewisusedtodevelopsoftwareforPC,bywhichthedevelopmentcycleisshortenandafriendlyhuman-computerinteractionisprovided.EachmonitoringandcontrolmoduleconsistsofSTC12seriesofmicrocontrollers,sensors,relaysetc.Differentmodulesareselectbasedontheneedifsystemtoachievecontrolgreenhouseinpartitionandblock.@#@I.INTRODUCTION@#@Tomodernindooragriculture,theautomaticmeasurementandcontrolofenvironmentparametersisthekeytoachievecropyieldandqualityofgreenhouse.Inrecentyears,facilitiesagriculturedevelopsvigorouslyinourcountry,matchedwithit,themonitoringandcontrolinstrumentofgreenhousehavealsomadecertaindevelopment.Afternearly10yearsofunremittinghardwork,ourresearchteamofmeasurementandcontrolsystemofagricultureenvironmentparameters,designedanintelligentmeasurementandcontrolsystemofdistributioncombinedofgreenhousewhichcanbepopularizedinthevastruralareas.Thissystemismainlycontroloftemperature,humidity,CO2concentration,soilmoistureandilluminationofgreenhouse.OFSCM,asthedatastorageissmall,displayinterfaceissingle,amountofinformationislimited,butitscapabilitypriceratioishigh,soitisusedasafrontunitofdataacquisitionandcontrol;@#@andofPC,ithasalargeamountofdatastorage,richsoftware,convenienthuman-computerinteraction,andsoon.Ifweuseoutdatedandlow-pricedPC,takingthePCastheuppermachine,takingthedifferentfunctioncontrolmodulescomposedofmultiplemicrocomputersasthelowermachines,thenamaster-slavedistributedandintelligentcontrolsystembasesonmicrocomputerismadeup,bywhichbothbettermonitoringandcontrol,displayanddatacollectionormanagementareachieved,butalsolowercostofsystemisgetaccordingtotheactualneed.@#@IISYSTEMSTRUCTUREANDPRINCIPLE@#@Themostmarkedfeatureofthedistributioncombinedandintelligentcontrolsystemgreenhouseisthatofincorporatingwithdataacquisition,controlandmanagementasawhole,modulecombination,simplestructure,convenienthuman-computerinteraction,andusingtechnologyofintelligentexpertfuzzycontrol,whichcanadapttoavarietyofcropmanagementcontrolingreenhouse.ThebasicstructureofthesystemisshowninFig.1.@#@Thestructureofthedistributedsystemiscomposedoftwolayers:

@#@theupperandlower.Inthetop-pricePCistakenasthehosttomakesystemmanagementandexpertsfuzzyoperationinintelligent,andtoprovideafriendlyhuman-computerinterface,andtorealizetheunitedmonitoringandmanagementofgreenhouse;@#@theloweriscomposedofaseriesofmodulesofdifferentfunction,andineachmodule,asinglechipofAT89Cisadoptedasthelowermachine,RS485isusedtocommunicatePCwithallAT89C,andthenthecollection,processingandcontrolofthegreenhouseparametersisachieved.Eachfunctionmoduleiscompletelyisolatedinelectrical,anyfailureonthenoduledoesnotproduceanyeffectonothermodules.Thesystemcollectsseparatelywaysofenvironmentinformationthrougheachmonitoringandcontrolmodule,andsendsittohostPCthroughtheRS485interface.AndinthePCconfigurationcontrolsystem,theacquiredparametersarecomparedwiththevaluesofsetting,thenaccordingtoavarietyofexpertintelligentfuzzycontrolsystemofcropsatdifferentgrowthstages,thefuzzycontrolinstructionsontheenvironmenttemperature,humidity,CO2concentration,soilwatercontentandthecorrespondingoperationinstructionsoralarmaregiven.@#@ThesystemisappliedinruralgreenhousesinQinhuangdao.Usuallyat1/4nearEastandWestendinagreenhouse,andattheheightof1.5mfromthegroundinthemiddleinthenorthernhalf（nearthewetcurtain）andthesouthernhalf（nearthefan）,amoduleofairtemperatureandhumidity,CO2concentrationandamoduleofsoilmoisturecontentareset;@#@amoduleofsoilmoisturecontentwillbeaddedinthemiddleofthegreenhouseaccordingtotheactualcondition;@#@attheheightof1.5minthemainentrance,awatertankisset,ofwhichthesolenoidofdriptubeshouldbesetbasedontheneedandcontrolledbymoduleofsoilmoisturecontent;@#@andthePCisplacedinthemainentrancetothegreenhouse.@#@III.HARDWAREDESIGN@#@A.TheCPandcommunicationsystem@#@Inthedistributedsystemofdataacqu