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1、基于PLC苗圃大棚自動控制系統(tǒng)設計作者:王詩冬最高學歷:本科工作單位:江蘇大學通訊地址:江蘇大學電氣與信息工程學院電話號碼:18252585697Email:348204983@qq.com字數:6195表數:4圖數:19基于PLC苗圃大棚自動控制系統(tǒng)設計摘要:本文是針對現代農業(yè)對智能溫室的需求而自行設計的溫室自動控制系統(tǒng)。通過分析溫室執(zhí)行機構的相應動作對溫室環(huán)境的影響,將PLC和傳感器技術應用到溫室控制系統(tǒng)設計,開發(fā)了基于PLC控制的苗圃大棚智能控制系統(tǒng)。大棚的環(huán)境系統(tǒng)是一個非線性、時變、滯后復雜大系統(tǒng),
2、難以建立系統(tǒng)的數學模型,采用常規(guī)的控制方法難以獲得滿意的靜、動態(tài)性能。本次設計控制系統(tǒng)硬件部分主要由PLC、各類傳感器構成的,傳感器是來檢測大棚內部的溫度、濕度、二氧化碳的濃度、光照度等,PLC是控制溫室內雙向天窗、側窗,遮陽網驅動,濕簾水泵,環(huán)流風機,降溫排濕風扇,C02補氣閥、補光燈等執(zhí)行設備的。本系統(tǒng)的智能溫室大棚投入運行后可以很好地實現了對溫室大棚內的各個環(huán)境因子的控制調節(jié),為苗圃創(chuàng)造了良好的生長環(huán)境。本系統(tǒng)操作簡單、工作穩(wěn)定可靠,實用性強,適應當前農業(yè)現化的需要,適用范圍廣,經濟效益很好,有好很的
3、發(fā)展前景。關鍵詞:大棚,溫度控制,PLCNurseryGreenhousesBasedonPLCAutomaticControlSystemDesignAbstract:Thisarticleisinviewofthemodernagriculturedemandforintelligentgreenhouseandgreenhouseautomaticcontrolsystemdesign.Throughtheanalysisofthecorrespondingactionofgreenhouseactu
4、atorsonthegreenhouseenvironment,theinfluenceofthePLCandsensortechnologyisappliedtothegreenhousecontrolsystemdesign,thedevelopmentofthenurserygreenhouseintelligentcontrolsystembasedonPLCcontrol.Greenhouseenvironmentsystemisanonlinear,time-varying,laggingofl
5、argecomplexsystemisdifficulttoestablishasystemofmathematicalmodel,theconventionalcontrolmethodisdifficulttoobtainsatisfactorystaticanddynamicperformance.ThedesignofcontrolsystemhardwarepartmainlycomposedofPLC,allkindsofsensors,sensoristodetectthetemperatur
6、einsidethegreenhouse,humidity,carbondioxideconcentration,light,etc.,thePLCistocontrolthebidirectionalskylight,sidewindowingreenhouse,sun-shadenetdrive,wetcurtainpump,circulationfan,theplatooniswetcoolingfan,ourfleetaircompensatingvalve,executeequipmentsuch
7、asthefilllight.Aftertheintelligentgreenhousesintooperationofthissystemcanwellrealizethecontrolofvariousenvironmentalfactorswithinthegreenhousesadjustment,createdagoodgrowthenvironmentforthenursery.Thissystemoperationissimple,stableandreliablework,strongpra
8、cticability,adapttotheneedsofthecurrentagriculturalmodernization,applicabilityiswideanditseconomicbenefitisverygood,hasgoodprospectsfordevelopmentKeywords:greenhouse,temperaturecontrol,PLC基于PLC苗圃大棚自動控制系統(tǒng)設計目錄基