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1、Greenhousecontrolsystemone,automaticcontrol.Usingthecomputertechnologyandthemoderncontroltheorytothegreenhouseeachkindofenvironmentfactor,includingthetemperature,theillumination,thehumidity,theCO2densityandappliesfertilizerandsoon,carriesontheautomaticcon
2、trolandadjustsintothegreenhousecontrolthefundamentalmode.Accordingtothegreenhousecrops'habitofgrowthandthemarketneed,thepartevencompletelygetsridofthenaturalenvironmenttherestraint,makestheartificialcreationbeingsuitablecropstogrowthebestenvironmentautoma
3、ticcontroltechnologicalmeanstobecomethemainstream.Thistime'sgreenhousehasthequitecompletecontrolsystem,haseachkindofsensortogatherthegreenhouseenvironmentaldata,thesupervisorysystemreal-timemonitorenvironmentalvariationandthecontrolimplementingagencymovem
4、ent,thegoodman-machinecontactsurfacecausesgrower'soperatingprocessimagemoreovertobesimple.Thiskindofcontrolsystemneedsthegrowertoinputthegreenhousecropstogrowneedstheenvironmentthetargetcomponent,thecomputerwiththetargetvaluewhichestablishesbeforehandcarr
5、iesonthecomparisonaccordingtosensor'sactualobservedvalue,decidedthatthegreenhouseenvironmentfactorthecontrolledprocess,thecontrolcorrespondingorganizationcarriesontheheating,todecreasetemperatureandtoventilateandsoonmovements.Thecomputerautomaticcontrol's
6、greenhousecontroltechnologyhasrealizedtheproductionautomation,suitstheformalizationproduction,thelaborproductivityhastheenhancement.Throughchangesthegreenhouseenvironmenthypothesistargetvalue,maycarryonthegreenhouseinnerrimboundaryclimatecontrolautomatica
7、lly,butthiscontrolmodemakestheresponsepromptlywithdifficultytothecropsgrowthcondition'schange,involvestheinherentlawswhichwithdifficultythecropsgrow.Atpresentourcountrymajorpartindependentdevelopment'slarge-scalemodernizedgreenhouseandtheintroductionovers
8、easequipmentbelongstothiscontrolmode.Second,intellectualizedcontrol.Thisisinthegreenhouseautomaticcontroltechnologyandintheproductionpracticefoundation,throughthesummary,thecollectionagriculturedomainknowledge,thete
