单片机 自动控制温度 外文翻译 外文文献 英文文献

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1、外文文献AbstractClimateconditionscontrolemphasesofautomaticcontrolgreenhousesintroducedfromabroadaredifferentfromtheseinhomeandtheintroducingandproductioncostofthemissohigh,soitisdifficulttopopularizeandusecosmically.Atpresent,ingreenhousesdesignedandbuiltinhomeitself，thedegree

2、ofenvironmentcontrolandmodernmanagementofmostofthemissolow,sotheycannotsatisfycrops'demandforhighproductionandplantingalltheyear;somecanonlycarryoutcontrolonpartialenvironmentfactorswithoutconsideringmutualaffectandcouplingofthemintheprocessofcontrol;somestillneedmanualcont

3、rol;sothesefactorsgreatlyrestrictexertionofeconomicbenefitofgreenhouses.Changingtraditionalmodesofcontrol;practicingcomputermonitoringandestablishinggreenhouseautomaticmonitoringsystemaccordwiththesituationofChinahaveimportantmeaningforquickeningmoderndegreeofgreenhouseprod

4、uctioninourcountryandincreasingbenefitofgreenhouses.Basedonsummarizingformers'researches,thepaperanalyzesenvironmentalparameters，theintegrativecontrolpropertyofgreenhousesystemsandthecontrolprocesswhichisanonlinear,delayandcomplicatedsystem;Basedonanalyzingmodesofcurrentgre

5、enhousemonitoringsystemsandpropertiesofsingle-chipmicrocomputers,apracticalautomaticmonitoringsystemforgreenhouseenvironmentisdesignedwhichcanrealizethemonitoringofeveryparameteringreenhouseenvironmentbysyntheticallyusingsensortechnology,fuzzycontroltheory,communicationtech

6、nologyandmicrocomputertechnologyThesystemhardwareiscomposedoftwoparts:alower-levelandahigher-levelcomputer.Thehigher-levelcomputerisaPCmicrocomputerwhichistheheadquarterofthesystemandfinishestheunifiedmanagementandcontrolofagreenhousebywayofCOMportRS-232connectingwiththelow

7、er-levelcomputer.Inmonitoringenvironment,thesystemcanfinishmonitoringforthisnonlinearanddelaysystemandrealizecrops'demandforgreenhouseenvironmentbyusingfuzzycontroltheoryandtechnology.Thecentralcomponentofthelower-levelcomputeris8098single-chipmicrocomputerofMCS-96series,wh

8、ichisusedtocollect,retreatcontrolandcommunicatewiththehigher-levelcomputer.Thesyst