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ID:13397809
大小:53.50 KB
页数:9页
时间:2018-07-22
《本科毕业论文---基于单片机的温度与湿度解耦控制系统设计外文翻译.doc》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、外文文献AbstractClimateconditionscontrolemphasesofautomaticcontrolgreenhousesintroducedfromabroadaredifferentfromtheseinhomeandtheintroducingandproductioncostofthemissohigh,soitisdifficulttopopularizeandusecosmically.Atpresent,ingreenhousesdesignedandbuiltinhomeitself,thedegreeofenvironmen
2、tcontrolandmodernmanagementofmostofthemissolow,sotheycannotsatisfycrops'demandforhighproductionandplantingalltheyear;somecanonlycarryoutcontrolonpartialenvironmentfactorswithoutconsideringmutualaffectandcouplingofthemintheprocessofcontrol;somestillneedmanualcontrol;sothesefactorsgreatl
3、yrestrictexertionofeconomicbenefitofgreenhouses.Changingtraditionalmodesofcontrol;practicingcomputermonitoringandestablishinggreenhouseautomaticmonitoringsystemaccordwiththesituationofChinahaveimportantmeaningforquickeningmoderndegreeofgreenhouseproductioninourcountryandincreasingbenef
4、itofgreenhouses.Basedonsummarizingformers'researches,thepaperanalyzesenvironmentalparameters,theintegrativecontrolpropertyofgreenhousesystemsandthecontrolprocesswhichisanonlinear,delayandcomplicatedsystem;Basedonanalyzingmodesofcurrentgreenhousemonitoringsystemsandpropertiesofsingle-ch
5、ipmicrocomputers,apracticalautomaticmonitoringsystemforgreenhouseenvironmentisdesignedwhichcanrealizethemonitoringofeveryparameteringreenhouseenvironmentbysyntheticallyusingsensortechnology,fuzzycontroltheory,communicationtechnologyandmicrocomputertechnologyThesystemhardwareiscomposedo
6、ftwoparts:alower-levelandahigher-levelcomputer.Thehigher-levelcomputerisaPCmicrocomputerwhichistheheadquarterofthesystemandfinishestheunifiedmanagementandcontrolofagreenhousebywayofCOMportRS-232connectingwiththelower-levelcomputer.Inmonitoringenvironment,thesystemcanfinishmonitoringfor
7、thisnonlinearanddelaysystemandrealizecrops'demandforgreenhouseenvironmentbyusingfuzzycontroltheoryandtechnology.Thecentralcomponentofthelower-levelcomputeris8098single-chipmicrocomputerofMCS-96series,whichisusedtocollect,retreatcontrolandcommunicatewiththehigher-levelcomputer.Thesyst
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