外文翻译--温室控制系统.doc

Greenhousecontrolsystemone,automaticcontrol.Usingthecomputertechnologyandthemoderncontroltheorytothegreenhouseeachkindofenvironmentfactor,includingthetemperature,theillumination,thehumidity,theCO2densityandappliesfertilizerandsoon,carriesontheautomaticcontrolandadjustsintothegreenhousecontrolthefundamentalmode.Accordingtothegreenhousecropshabitofgrowthandthemarketneed,thepartevencompletelygetsridofthenaturalenvironmenttherestraint,makestheartificialcreationbeingsuitablecropstogrowthebestenvironmentautomaticcontroltechnologicalmeanstobecomethemainstream.Thistimesgreenhousehasthequitecompletecontrolsystem,haseachkindofsensortogatherthegreenhouseenvironmentaldata,thesupervisorysystemreal-timemonitorenvironmentalvariationandthecontrolimplementingagencymovement,thegoodman-machinecontactsurfacecausesgrowersoperatingprocessimagemoreovertobesimple.Thiskindofcontrolsystemneedsthegrowertoinputthegreenhousecropstogrowneedstheenvironmentthetargetcomponent,thecomputerwiththetargetvaluewhichestablishesbeforehandcarriesonthecomparisonaccordingtosensorsactualobservedvalue,decidedthatthegreenhouseenvironmentfactorthecontrolledprocess,thecontrolcorrespondingorganizationcarriesontheheating,todecreasetemperatureandtoventilateandsoonmovements.Thecomputerautomaticcontrolsgreenhousecontroltechnologyhasrealizedtheproductionautomation,suitstheformalizationproduction,thelaborproductivityhastheenhancement.Throughchangesthegreenhouseenvironmenthypothesistargetvalue,maycarryonthegreenhouseinnerrimboundaryclimatecontrolautomatically,butthiscontrolmodemakestheresponsepromptlywithdifficultytothecropsgrowthconditionschange,involvestheinherentlawswhichwithdifficultythecropsgrow.Atpresentourcountrymajorpartindependentdevelopmentslarge-scalemodernizedgreenhouseandtheintroductionoverseasequipmentbelongstothiscontrolmode.Second,intellectualizedcontrol.Thisisinthegreenhouseautomaticcontroltechnologyandintheproductionpracticefoundation,throughthesummary,thecollectionagriculturedomainknowledge,thetechnologyandeachkindoftentativedataconstructstheexpertsystem,takeestablishestheplantgrowththemathematicalmodelasthetheorybasis,onekindwhichtheresearchdevelopsthegreenhouseexpertcontrolsystemtechnologywhichsuitsthedifferentcropstogrow.Thiskindofintellectualizationscontroltechnologytheagronomistsystemandthegreenhouseautomaticcontroltechnologyorganicsynthesis,takesbythegreenhousecombinedenvironmentfactorgatheringandtheanalysisobject,throughexpertsystemsconsultationandthedecision-making,givesthebestenvironmentparameterwhichthedifferenttimecropsgrowneed,andrestsonthisoptimumparametertothedatawhichreal-timeobtainstocarryonfuzzyprocessing,theautomaticselectionisreasonable,theoptimizedadjustmentscheme,thecontrolimplementingagencyscorrespondingmovement,realizesthegreenhouseintellectualizedmanagementandtheproduction.Theagronomistsystemhasprovidedonebrand-newprocessingcomplexagriculturequestionthinkingmethodandthetechnologicalmeansforus.Itcanactaccordingtothegreenhouseenvironmentalconditionandthecropsgrowthcondition,appliesthesuitableknowledgeexpressionandtheregularization,theinferencedecision-makingleavesmostsuitsthegreenhouseenvironmentwhichthecropsgrow.Appliestheagronomistsysteminthegreenhousereal-timemonitoringandtheautomaticregulationisthegreenhousedevelopmentnewluminescentspot.Thiscontrolmodebothcanmanifesttheinherentlawswhichthecropsgrow,thedisplayagronomistsinagriculturalproductioninstructionfunction,andmayusethecomputertechnologyfullythesuperiority,causessystemsregulationtobeconvenientandeffective,realizesthegreenhousecompleteintellectualizedcontrol.Therefore,thegreenhouseexpertcontrolsystemtechnologyisonekindisquiteideal,thecomparisontohavethecareerdevelopmentcontrolmode.Modernlarge-scalegreenhousetoachieveintelligentcontrol,computercontrolsystemmusthavenaturalventilationsystem,externalshadingsystems,internalinsulationandfinishsystems,wetcurtain/fanforcedcoolingsystem,CO2AirSystem,micro-mistsystem,premiumopticalsystem,irrigation/fertilizationsystem,breedingsystem,top-spraysystem,heatingsystem,plantprotectionsystems,lightingsystems,pickingsystemsequipment.Asavectorcontrolgreenhousecontrolsystemfromthecontrollersadvancedandreliableperformanceofthesensor,asound-artcontrolprocedures,suchasprintersandmonitors,toachievetheabove-mentionedgreenhouseequipmenttomonitortheoptimaloperation.Changringdevelopedautomatedcontrolsystemtoautomaticmeasurementofgreenhouseclimateandsoilparameters,andallgreenhouseequipmentcanbeconfiguredtoachieveoptimaloperationofautomaticcontrol,suchaswindows,heating,cooling,humidity,light,CO2supplementedirrigation,fertilization,andcirculationandsoon.Changringgreenhousedevelopedintelligentcontrolsystemclosed-loopcontrolmethodofoutdoorwindspeed,winddirection,sunlightradiation,temperatureandindoortemperatureandhumidityfactors,suchascollection,processingthroughthecontrollerwillcontroltheoutcomeofreturntothesceneandadjustthesceneimplementingagencies,theclimaticfactorsontheindoorreal-timecontrolimplementation,inordertoguaranteethecontrolofthereliabilityofprecisionandcontrol.Intelligentcontrolsystemofgreenhousegreenhouseenvironmentcontrolprocessparametersandoperatingparametersoftheexecutingagencyandotherinformationthroughthesensorintoelectricalsignalssenttothecomputer,theagriculturalexpertsystembasedondifferentcropsatdifferenttimesofthephysiologicalneedsofcropgrowthindifferentperiodsoftimesetautomaticallytemperature,humidity,lightandCO2concentrationasanidealrangeofthebestdataandtheactualtestingdataanddeviationsfromtheidealdatafortheregulationoftheamountofgreenhousegases.Whenthegreenhousetemperaturedeviationovertheupperlimitset,theissueofregulationofcomputerinstructions,theexecutingagencytoopentheventilationcoolingsystem；ifthegreenhousetemperaturebelowthesetminimumdeviation,theissueofregulationofcomputerinstructions,opentheventilationsystem；whenthehumidityislowerthanforHumiditywillbeunderthelimit,theissueofregulationofcomputerinstructions,openthehumidificationheatingsystem；whenCO2concentrationsexceedingtherangelimit,thecomputerautomaticallyswitchesventilationsystemandtheCO2generator.Greenhousecontrolsystemintelligentgreenhouseprospectsforthedevelopmentofstrategiesforsustainabledevelopmentintheopen,undertheguidanceofthenewdirectionofagriculture.Cropyieldsfromthepointofview,ithasahighoutputvalueperunitarea；onenvironmentalprotectionpointofview,itcannotonlyoutputcleanfruitsandvegetables,andasaresultofprecisecontrolofchemicalfertilizersandotheradditivesusedalsotoavoidtheonsoilandgroundwaterpollution.Greenhousevegetableproductionhasbeenextendedfromtheflowers,fruitsandlivestock,aquaculture,forestnursery,mushroom,Chineseherbalmedicineandotherfields.ThemodernizationofChinasgreenhouse,withtheexceptionofintelligentcontrolsystems,thebasichardwaresystemtoachievesynchronizationwiththeinternationallevel.Canbeseenthattheagriculturalexpertsystemappliedtoreal-timegreenhousemonitoringandautomaticcontroltechnologyisnodoubtanewbrightspotinthegreenhouse,thegreenhouseisalsoatrendinthedevelopmentofcontroltechnology.Itsdevelopmentpotentialandapplicationofalargespace,theactualproductionofthefarmersareveryimportantguidingsignificance.Meettheneedsofthegreenhouseproductionandeasethecontradictionbetweenthelackofexpertsinthefield,therebygreatlyimprovingtheconversionrateofscienceandtechnology,inplaceandthepenetrationrate.温室控制系统一、自动控制。利用计算机技术及现代控制理论对温室内的各种环境因子，包括温度、光照、湿度、CO2浓度和施肥等，进行自动控制和调节成为温室控制的主要方式。根据温室作物的生长习性和市场的需要，部分甚至完全摆脱自然环境的约束，使人为创造适宜作物生长最佳环境的自动控制技术手段成为主流。此时的温室有比较完整的控制系统，有各种传感器采集温室环境数据，监控系统实时监测环境变化及控制执行机构的动作，良好的人机界面使种植者的操作过程形象而且简便。这种控制系统需要种植者输入温室作物生长所需环境的目标参数，计算机根据传感器的实际测量值与事先设定的目标值进行比较，以决定温室环境因子的