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1、INTERNATIONALJOURNALONSMARTSENSINGANDINTELLIGENTSYSTEMSVOL.4,NO.1,MARCH2011ALOWCOSTPORTABLETEMPERATURE-MOISTURESENSINGUNITWITHARTIFICIALNEURALNETWORKBASEDSIGNALCONDITIONINGFORSMARTIRRIGATIONAPPLICATIONS1234AmanTyagi,ArrabothuApoorvReddy,JasmeetSingh,ShubhajitRoyChowdhury1,2,3,4Centre
2、forVLSIDesignandEmbeddedSystemTechnology,IIITHyderabad,India.12Emails:aman.tyagiug08@students.iiit.ac.in,apoorv.reddyug08@students.iiit.ac.in,34jasmeet.singhug08@students.iiit.ac.in,src.vlsi@iiit.ac.inSubmitted:November12,2010Accepted:February1,2011Published:March1,2011Abstract-There
3、centtrendsindevelopinglowcosttechniquestosupportcosteffectiveagricultureindevelopingcountrieswithlargepopulationhasmotivatedthedevelopmentoflowcostsensingsystemstoprovideforlowcostirrigationfacilitiesandalsotoprovideforconservationofwateratthesametime.Thecurrentpaperhighlightsthedeve
4、lopmentoftemperatureandsoilmoisturesensorthatcanbeplacedonsuitablelocationsonfieldformonitoringoftemperatureandmoistureofsoil,thetwoparameterstowhichthecropsaresusceptive.Thesensingsystemisbasedonafeedbackcontrolmechanismwithacentralizedcontrolunitwhichregulatestheflowofwaterontothef
5、ieldintherealtimebasedontheinstantaneoustemperatureandmoisturevalues.Dependingonthevariedrequirementofdifferentcrops,alookuptablehasbeenpreparedandreferredtoforascertainingtheamountofwaterneededbythatcrop.Thesystembasedonamicrocontrollerhasbeenappliedonriceandmaizefieldsspanningovera
6、reaof1acreseachfor3weeksandmorethan94%ofthe94AmanTyagi,ArrabothuApoorvReddy,JasmeetSingh,ShubhajitRoyChowdhury,ALowCostPortableTemperature-MoistureSensingUnitwithArtificialNeuralNetworkBasedSignalConditioningforSmartIrrigationApplicationsplantswerefoundtobealiveafterexperimentation.T
7、hecostofthesystemhasbeenestimatedtobeaslowas120INRandisthereforeeasilydeployableindevelopingcountries.IndexTerms:MoistureSensing,ANN,temperaturedriftcompensation,linearizationI.INTRODUCTIONIrrigationisoneofthefundamentalproblemsofagricultureindevelopingcountries.Typicallyinthesedevel
8、opingcountri
