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1、基于PLC苗圃大棚自動控制系統(tǒng)設(shè)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(shù):6195表數(shù):4圖數(shù):19基于PLC苗圃大棚自動控制系統(tǒng)設(shè)計摘要:本文是針對現(xiàn)代農(nóng)業(yè)對智能溫室的需求而自行設(shè)計的溫室自動控制系統(tǒng)。通過分析溫室執(zhí)行機構(gòu)的相應(yīng)動作對溫室環(huán)境的影響,將PLC和傳感器技術(shù)應(yīng)用到溫室控制系統(tǒng)設(shè)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(fù)雜大
2、系統(tǒng),難以建立系統(tǒng)的數(shù)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(shè)計控制系統(tǒng)硬件部分主要由PLC、各類傳感器構(gòu)成的,傳感器是來檢測大棚內(nèi)部的溫度、濕度、二氧化碳的濃度、光照度等,PLC是控制溫室內(nèi)雙向天窗、側(cè)窗,遮陽網(wǎng)驅(qū)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(shè)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(xiàn)了對溫室大棚內(nèi)的各個環(huán)境因子的控制調(diào)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(yīng)當前農(nóng)業(yè)現(xiàn)化的需要,適用范圍廣,經(jīng)濟效益很
3、好,有好很的發(fā)展前景。關(guān)鍵詞:大棚,溫度控制,PLCNurseryGreenhousesBasedonPLCAutomaticControlSystemDesignAbstract:Thisarticleisinviewofthemodernagriculturedemandforintelligentgreenhouseandgreenhouseautomaticcontrolsystemdesign.Throughtheanalysisofthecorrespondingactionofgreen
4、houseactuatorsonthegreenhouseenvironment,theinfluenceofthePLCandsensortechnologyisappliedtothegreenhousecontrolsystemdesign,thedevelopmentofthenurserygreenhouseintelligentcontrolsystembasedonPLCcontrol.Greenhouseenvironmentsystemisanonlinear,time-varyin
5、g,laggingoflargecomplexsystemisdifficulttoestablishasystemofmathematicalmodel,theconventionalcontrolmethodisdifficulttoobtainsatisfactorystaticanddynamicperformance.ThedesignofcontrolsystemhardwarepartmainlycomposedofPLC,allkindsofsensors,sensoristodete
6、ctthetemperatureinsidethegreenhouse,humidity,carbondioxideconcentration,light,etc.,thePLCistocontrolthebidirectionalskylight,sidewindowingreenhouse,sun-shadenetdrive,wetcurtainpump,circulationfan,theplatooniswetcoolingfan,ourfleetaircompensatingvalve,ex
7、ecuteequipmentsuchasthefilllight.Aftertheintelligentgreenhousesintooperationofthissystemcanwellrealizethecontrolofvariousenvironmentalfactorswithinthegreenhousesadjustment,createdagoodgrowthenvironmentforthenursery.Thissystemoperationissimple,stableandr
8、eliablework,strongpracticability,adapttotheneedsofthecurrentagriculturalmodernization,applicabilityiswideanditseconomicbenefitisverygood,hasgoodprospectsfordevelopmentKeywords:greenhouse,temperaturecontrol,PLC目錄基于PLC苗圃大棚自動控制系統(tǒng)設(shè)計1