基于单片机的温度与湿度解耦控制系统设计外文文献及中文翻译Word文件下载.doc

基于单片机的温度与湿度解耦控制系统设计外文文献及中文翻译Word文件下载.doc

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system 

design 

basedonMCU

Climateconditionscontrolemphasesofautomaticcontrolgreenhousesintroducedfromabroadaredifferentfromtheseinhomeandtheintroducingandproductioncostofthemissohigh,soitisdifficulttopopularizeandusecosmically.Atpresent,ingreenhousesdesignedandbuiltinhomeitself，thedegreeofenvironmentcontrolandmodernmanagementofmostofthemissolow,sotheycannotsatisfycrops'

demandforhighproductionandplantingalltheyear;

somecanonlycarryoutcontrolonpartialenvironmentfactorswithoutconsideringmutualaffectandcouplingofthemintheprocessofcontrol;

somestillneedmanualcontrol;

sothesefactorsgreatlyrestrictexertionofeconomicbenefitofgreenhouses.Changingtraditionalmodesofcontrol;

practicingcomputermonitoringandestablishinggreenhouseautomaticmonitoringsystemaccordwiththesituationofChinahaveimportantmeaningforquickeningmoderndegreeofgreenhouseproductioninourcountryandincreasingbenefitofgreenhouses.

Basedonsummarizingformers'

researches,thepaperanalyzesenvironmentalparameters，theintegrativecontrolpropertyofgreenhousesystemsandthecontrolprocesswhichisanonlinear,delayandcomplicatedsystem;

Basedonanalyzingmodesof

currentgreenhousemonitoringsystemsandpropertiesofsingle-chipmicrocomputers,apracticalautomaticmonitoringsystemforgreenhouseenvironmentisdesignedwhichcanrealizethemonitoringofeveryparameteringreenhouseenvironmentbysyntheticallyusingsensortechnology,fuzzycontroltheory,communicationtechnologyandmicrocomputertechnology

　　　Thesystemhardwareiscomposedoftwoparts:

alower-levelandahigher-levelcomputer.Thehigher-levelcomputerisaPCmicrocomputerwhichistheheadquarterofthesystemandfinishestheunifiedmanagementandcontrolofagreenhousebywayofCOMportRS-232connectingwiththelower-levelcomputer.Inmonitoringenvironment,thesystemcanfinishmonitoringforthisnonlinearanddelaysystemandrealizecrops'

demandforgreenhouseenvironmentbyusingfuzzycontroltheoryandtechnology.Thecentralcomponentofthelower-levelcomputeris8098single-chipmicrocomputerofMCS-96series,whichisusedtocollect,retreatcontrolandcommunicatewiththehigher-levelcomputer.

　　　Thesystemsoftwareconsistsoftwoparts.Thehigher-levelsoftwareisdevelopedbyVBandcomposedofsevenmodulesofsettingsystemparameters,demarcatingsensors,ascertainingfuzzycontroltable,connectingandmonitoringreal-timedata,recurringtohistorydataand

help,andeachmodulehascertainfunctionandeachotherisindependentfromothers.Thelower-levelsoftwareisdevelopedby8098assemblelanguageandcomposedofsixmodulesofamainprogram,asendingandinterruptingserviceprogram,areceivingandinterruptingserviceprogram,ascertainingasamplingcycle,connectingdataandpretreatingdata.Simulativeexperimentshowsthatthewholesystemisconvenienttooperate，highefficient,easytoexpand,hasbetteradaptabilityanduniversalpropertyandestablishescertainbaseforrealizingcontrolsystemdesignwithmanyfactorsingreenhouseenvironment.

　　　Keywords:

Automaticcontrol,Greenhouse,Single-chipmicrocomputer,

　　　Computermonitoringandcontrolling,Fuzzycontrol

一Foreword

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