ralarmaregiven.ThesystemisappliedinruralgreenhousesinQinhuangdao.Usuallyat/nearEastandWestendinagreenhouse,andattheheightof.mfromthegroundinthemiddleinthenorthernhalf(nearthewetcurtain)andthesouthernhalf(nearthefan),amoduleofairtemperatureandhumidity,COconcentrationandamoduleofsoilmoisturecontentareset;amoduleofsoilmoisturecontentwillbeaddedinthemiddleofthegreenhouseaccordingtotheactualcondition;attheheightof.minthemainentrance,awatertankisset,ofwhichthesolenoidofdriptubeshouldbesetbasedontheneedandcontrolledbymoduleofsoilmoisturecontent;andthePCisplacedinthemainentrancetothegreenhouse.IIIHARDWAREDESIGNA.TheCPandcommunicationsystemInthedistributedsystemofdataacquisitionandcontrol,asthemicrocontrolunitislimitedindatastorageandslowincalculatingofcomplexfunctions,soPCisusedandthemaster-slavemoduleisadoptedinthesystem,thatisasystemof,taking电器。
.土壤水