基于plc控制的苗圃溫室大棚系統(tǒng)設(shè)計(jì)

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1、基于PLC苗圃大棚自動(dòng)控制系統(tǒng)設(shè)計(jì)基于PLC苗圃大棚自動(dòng)控制系統(tǒng)設(shè)計(jì)摘要：本文是針對(duì)現(xiàn)代農(nóng)業(yè)對(duì)智能溫室的需求而自行設(shè)計(jì)的溫室自動(dòng)控制系統(tǒng)。通過分析溫室執(zhí)行機(jī)構(gòu)的相應(yīng)動(dòng)作對(duì)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(jì)，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(gè)非線性、時(shí)變、滯后復(fù)雜大系統(tǒng)，難以建立系統(tǒng)的數(shù)學(xué)模型，采用常規(guī)的控制方法難以獲得滿意的靜、動(dòng)態(tài)性能。本次設(shè)計(jì)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

2、是控制溫室內(nèi)雙向天窗、側(cè)窗，遮陽網(wǎng)驅(qū)動(dòng)，濕簾水泵，環(huán)流風(fēng)機(jī)，降溫排濕風(fēng)扇，C02補(bǔ)氣閥、補(bǔ)光燈等執(zhí)行設(shè)備的。本系統(tǒng)的智能溫室大棚投入運(yùn)行后可以很好地實(shí)現(xiàn)了對(duì)溫室大棚內(nèi)的各個(gè)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(shí)用性強(qiáng),適應(yīng)當(dāng)前農(nóng)業(yè)現(xiàn)化的需要,適用范圍廣,經(jīng)濟(jì)效益很好，有好很的發(fā)展前景。關(guān)鍵詞：大棚，溫度控制，PLCNurseryGreenhousesBasedonPLCAutomaticControlSystemDesignAbstract:Thisarticleisin

3、viewofthemodernagriculturedemandforintelligentgreenhouseandgreenhouseautomaticcontrolsystemdesign.Throughtheanalysisofthecorrespondingactionofgreenhouseactuatorsonthegreenhouseenvironment,theinfluenceofthePLCandsensortechnologyisappliedtothegreenhousecontrols

4、ystemdesign,thedevelopmentofthenurserygreenhouseintelligentcontrolsystembasedonPLCcontrol.Greenhouseenvironmentsystemisanonlinear,time-varying,laggingoflargecomplexsystemisdifficulttoestablishasystemofmathematicalmodel,theconventionalcontrolmethodisdifficultt

5、oobtainsatisfactorystaticanddynamicperformance.ThedesignofcontrolsystemhardwarepartmainlycomposedofPLC,allkindsofsensors,sensoristodetectthetemperatureinsidethegreenhouse,humidity,carbondioxideconcentration,light,etc.,thePLCistocontrolthebidirectionalskylight

6、,sidewindowingreenhouse,sun-shadenetdrive,wetcurtainpump,circulationfan,theplatooniswetcoolingfan,ourfleetaircompensatingvalve,executeequipmentsuchasthefilllight.Aftertheintelligentgreenhousesintooperationofthissystemcanwellrealizethecontrolofvariousenvironme

7、ntalfactorswithinthegreenhousesadjustment,createdagoodgrowthenvironmentforthenursery.Thissystemoperationissimple,stableandreliablework,strongpracticability,adapttotheneedsofthecurrentagriculturalmodernization,applicabilityiswideanditseconomicbenefitisverygood

8、,hasgoodprospectsfordevelopmentKeywords:greenhouse,temperaturecontrol,PLC基于PLC苗圃大棚自動(dòng)控制系統(tǒng)設(shè)計(jì)目錄基于PLC苗圃大棚自動(dòng)控制系統(tǒng)設(shè)計(jì)11概述11.1國內(nèi)外溫室控制技術(shù)的研究現(xiàn)狀11.2研究的意義22本系統(tǒng)研究方案22.1控制系統(tǒng)設(shè)計(jì)目標(biāo)22.2控制方案33系統(tǒng)硬件設(shè)計(jì)43.1系統(tǒng)的硬件組