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TheDesignofAutomaticTemperatureandHumidityRecorderChenYu-jie1,a,LiuPei-xue1,b,LuoJin-tao1,c,XuWen-xiu1,dQingDaoHuangHaiCollege,Qingdao266427,Chinaachenyujie_cc@163.
com,bytulpx@163.
com,c1269329082@qq.
com,d540362098@qq.
comKeywords:Temperatureandhumidity,real-timemonitor,485signalcommunication,UppercomputerAbstract:Aimingattheproblemsthatthetraditionaltemperatureandhumidityrecordingmanualoperationislowefficiency,putforwardadesignschemeoftemperatureandhumidityautomaticalarmrecorder.
real-timemonitortemperatureandhumiditysensorsusingsinglechipmicrocomputertechnology,afterthedataiscollectedandprocessed,theresultsisdisplayedontheLCDscreen,atthesametime,transmitthedatatoPCfordisplaythroughtheRS485serialcommunication,alsoThedesignhasthefunctionofdatarecordandhistoricaldatainquiry,thehostcomputerremotecontrolandsoon,whentemperatureandhumidityexceedsuser-setupperandlowerlimits,thedevicewillautomaticallyalarm.
IntroductionTemperatureandhumiditymeasurementisanimportantpartofthemoderndetectiontechnology,inordertoensurethequalityoftheproducts,savingenergyandsafetyproductionandplaysakeyrole.
Therefore,toensurefastandaccuratelymeasuringtechnologyanddevicefortemperatureandhumiditygenerallybyvariouscountriesattention.
Withthedevelopmentofcommunicationstechnologyandcomputertechnology,temperatureandhumiditymeasurementtechnologyinJapan,Netherlands,UnitedStates,Israelandotherdevelopedcountrieshasbeenrapiddeveloped.
Nowforeigntemperatureandhumiditymeasurementtechnologyismovingtowardsthedevelopmentofhigh-techdirection,Networktechnology,remotesensingtechnologyhasbeengraduallyintegratedwiththeproductionactivities.
Inrecentyears,Chinahasalsoincreasedtheresearcheffortsinthetemperatureandhumiditymeasurementtechnology,Despiteadvancesintechnology,morehumane,butthereisnotremotecontroltheworkingstatusoftheequipment.
Thisdesignintheoriginaltechnicallevel,hasmadethefurtherimprovement:1,environmentalparametersdataprocessingwithhigheraccuracyrequirements,ensurethegoodsinstorageenvironment,increasetheeconomicefficiencyofenterprises;2,usinglowpowercomponents,thepowerconsumptionwillbegreatlyreduced,reducingthepowerconsumptioncost;3,theadjustmentofenvironmentmonitoringtechnology,notonlycanobservedthedatainthemainequipmentonthesite,butalsoobservationthedatainanyPCequippedwithcorrespondingPCmachine,Theparametersofthemainequipment,setcommandtocompletethemonitoringandcontrolofthecombined,largelyreducemanpowerparticipationprocess.
OverallSystemDesignThesystemismainlycomposedofthreeparts,dataacquisitiondevice,controlcenter,hostcomputer.
(theoveralldesigndiagramofthesystemseeFig.
1).
Fig.
1theoveralldesignofthesystemControlledbyMCU,thedataacquisitionterminalusingtemperatureandhumiditysensorAM2321totemperatureandhumiditydatareal-timeacquisitionandthecollecteddatawereprocessedanddisplayedontheLCDscreen,alsothroughtheRS485serialcommunicationwouldbeprocessedbythedatatoPCdisplay,whenthetemperatureandhumidityexceedsthesettingupperandlowerlimit,thealarmdevicewillbeactivated.
HardwareDesignThecircuitdesignofdataacquisitionterminalFig.
2Thesystemblockdiagraminfigure2dataacquisitionMainlyusethehighprecisiontemperaturesensor,capacitivehumiditysensingelement,A/Dconverter,signalamplifierandahighperformanceembeddedmicrocontrollerintegratedconsistingofAM2321temperatureandhumiditysensortoachievethedatacollection.
Throughtheamplifiertocollectthedatasignalstrongerthannormal,andtheconversionofthecollecteddatathroughtheA/Dconverterinatimelymanner,sothattheoutputdigitalsignalismoreanti-interference.
DataacquisitioninthesystemblockdiagramasshowninFig.
2,thesmallestsystemconsistsofDC/DCvoltagestabilizer,resetcircuit,MSP430,crystalscircuitstructure,etc.
DatadisplayandalarmcircuitdesignTheMSP430ascontrolcenterprocessor,using2.
8inchalientekTFTLCDliquidcrystalmoduleasthedisplayunit,thecontrolcenteralarmandprompttheuserthroughthebuzzer,theNPNtriode8050asalarmcircuitswitch,whenbeepisa3.
3Vhighlevel,afterthevoltagedivision,thebasePowersupplymoduleIndicatingDC/DCvoltagestabilizerResetcircuitCrystalresonancecircuitMSP4301Temperatureandhumidity2TemperatureandhumiditycontrolcenterelectrodeoftheNPNtransistorstoobtainacontrolsignal,atthistimeofthetriodethreeterminalvoltagestatecollector>base>emitter,thetriodeismakethebuzzersounds,Similarly,whenthebeepislowlevel,thebuzzerdoesnotring.
DatadisplayandalarmcircuitdiagraminFig.
3.
Fig.
3DatadisplayandalarmcircuitmodulechartSDcardcircuitdesignControlcenterprocessorrunningFatFssystem,thesystemdirectlymountstheSDcard,theoperationtoachievethefunctionoflocalrecordsofthesystem.
TheFig.
4SDcardinterfaceisconnectedtotheSTM32schematicdiagramFATFSsystemssupportthesizeof1~32gSDcard.
SDcarddrivercircuitasfollowsinFig.
4,SDcarddriverusingSPImode,andtheSDcardconnecttotheSTM32processorSPI2,topullonthecontrolpintoensurethereliabilityofcommunication.
SoftwareDesignThedesignofthedataacquisitionterminalprogramAfteracquisitionterminalbootdeviceisinitialized,itischoosethemeasurementoftemperatureandhumidityonetworoad,thanallthewaybegantonormaldataDATA29CD/DATA31CMD2VSS3VDD4CLK5VSS6DATA07DATA18CD10GND11WP12SD_CARDsdcard104C28VCC3.
3GND112233445566P4SDCARD47KR2847KR2947KR3047KR3147KR32VCC3.
3NRF_CESPI2_MISOSPI2_SCKSPI2_MOSISD_CSNRF_IRQSDCARDNRF_CESPI2_MISOSPI2_SCKSPI2_MOSISD_CSNRF_IRQTFTLCDAlarmmoduleTemperatureandhumiditymoduleMSP430PowersupplymoduleStartDeviceinitializationSelectmeasurementmodeT&HcollectionCompletecollectionT&HNYNSendtocoordinatorthroughGPRSYENDTwoTEMPsignslscollectionTEMPNFig.
5Dataacquisitionterminalprogramflowchartacquisition,thedatawillbesenttothecoordinatorviaGPRSoncetheacquisitioniscomplete,thanrecycle.
ThedataacquisitionterminalprogramflowchartisasfollowsFig.
5.
PCsoftwaredesignThefriendlyhuman-computerinteractionenvironmentisanimportantfactorofthedesign.
ThisdesignusestheDelphi7.
0providestheuserswithavivid,intuitiveandeasyoperationoftheuppermachine.
Delphi7.
0hasdirectlycompiledexecutablecode,compilespeedcharacteristics,powerfuldataaccessandnetworkdevelopmentcapability,highreusability,scalability,strongsupportfortheaccessrulesaregiventotheclientorserverprocessingofthetwoprograms.
Thetemperatureandhumidityautomaticalarmrecordermachinehassimplestructure,highreliability,lowcost,andupdatespeed,systeminstallationprocesssimple,fastandconvenient.
Asshowinthefunction,TemperatureandhumidityautomaticalarmrecorderPCcanreal-timequeryreal-timedataofthespecifiedrecorder,Tocontrolthechangeofthefieldtestdataatanytime;Receivethealarmingsignalfromtherecorder,thefirsttimetounderstandthescenesituationandtimelydealwithemergencies;Remotesettingthealarmofthespecifieddatarecorderandthealarmfunctionofthespecifiedrecorderisopenedorclosed.
Itiscanbewidelyusedintheareas,suchascoldstorage,food,storageofvaccineswhichtemperatureandhumidityparametersneedtomonitored.
Itcansignificantlyimprovetheeffectofmanagement,makeupthedesignonlywithdatacollectionandprocessing,butwithoutremotecontrolterminalinthemarket.
SystemTestTodeployaPCmachinewithahostcomputerprogram,adevelopmentboardwithaliquidcrystaldisplayscreen,andacollectionof10environmentalparametersInalaboratory,testthedatatransmissionrate,powerconsumptionandcommunicationdistanceofthesystem.
Bystatistics,itis1-3secondforthehostPCtosendscommandandreceivethemeasurementparametersfromthe10collector,withasuccessrateof100%.
Thepartofthecollectionandtheresultsareshownintable1,thetestresultsshowthatthesystemhashighstabilityandsecurity.
Table.
1partdatacollectiontableTimeCollectorNo.
TemperatureHumidity10:23:05012.
043%10:23:05022.
043%10:23:06032.
043%10:23:06042.
043%10:23:07052.
543%10:23:07062.
543%ConclusionThesystemhasrealizedthereal-timemonitoringoftemperatureandhumiditydata,processing,transmission,andthefunctionofhuman-computerinteraction.
Thewholesystemusesmodulardesign,hardwarestructureissimpleandconvenientwiring,softwarefunctionisperfect,withsystematicupgrading,improvetheefficiencyoftheworkers,reducesthecost,willsignificantlyimprovethetraditionaltemperatureandhumiditydataprocessingwork.
Theprojectnameandnumber:BasedontheZigbeenetworkofkeytechniquesofseacucumberaquaculturewaterqualitymonitoring(J14LN82)References[1]HarryK.
H.
Chow,etal.
DesignofaRFIDcase-basedresourcemanagementsystemforwarehouseoperations[J].
ExpertSystemswithApplications30(2014),561-576.
[2]LuSuhong,MaFei.
Theapplicationoftheportabletemperatureandhumiditydetector[J].
Journalofhenanagriculturaluniversity,2013,47(2):162~166[3]YangYi.
Researchonthegreenhouseenvironmentmanagementsystem[D].
Shanghai:EastChinaUniversityofScienceandTechnology,2012[4]FengLiang.
Researchandsystemdesignoflowpowerstoragetemperaturecontrolsystem[D].
Shandong:ShandongUniversity,2014[5]YangWei,GaoWenhua,LuoHongda,etc.
.
DesignandresearchoftemperatureandhumiditymonitoringsystembasedonARM[J].
Journalofelectronicdesignengineering,2014,21(3):47~49
com,bytulpx@163.
com,c1269329082@qq.
com,d540362098@qq.
comKeywords:Temperatureandhumidity,real-timemonitor,485signalcommunication,UppercomputerAbstract:Aimingattheproblemsthatthetraditionaltemperatureandhumidityrecordingmanualoperationislowefficiency,putforwardadesignschemeoftemperatureandhumidityautomaticalarmrecorder.
real-timemonitortemperatureandhumiditysensorsusingsinglechipmicrocomputertechnology,afterthedataiscollectedandprocessed,theresultsisdisplayedontheLCDscreen,atthesametime,transmitthedatatoPCfordisplaythroughtheRS485serialcommunication,alsoThedesignhasthefunctionofdatarecordandhistoricaldatainquiry,thehostcomputerremotecontrolandsoon,whentemperatureandhumidityexceedsuser-setupperandlowerlimits,thedevicewillautomaticallyalarm.
IntroductionTemperatureandhumiditymeasurementisanimportantpartofthemoderndetectiontechnology,inordertoensurethequalityoftheproducts,savingenergyandsafetyproductionandplaysakeyrole.
Therefore,toensurefastandaccuratelymeasuringtechnologyanddevicefortemperatureandhumiditygenerallybyvariouscountriesattention.
Withthedevelopmentofcommunicationstechnologyandcomputertechnology,temperatureandhumiditymeasurementtechnologyinJapan,Netherlands,UnitedStates,Israelandotherdevelopedcountrieshasbeenrapiddeveloped.
Nowforeigntemperatureandhumiditymeasurementtechnologyismovingtowardsthedevelopmentofhigh-techdirection,Networktechnology,remotesensingtechnologyhasbeengraduallyintegratedwiththeproductionactivities.
Inrecentyears,Chinahasalsoincreasedtheresearcheffortsinthetemperatureandhumiditymeasurementtechnology,Despiteadvancesintechnology,morehumane,butthereisnotremotecontroltheworkingstatusoftheequipment.
Thisdesignintheoriginaltechnicallevel,hasmadethefurtherimprovement:1,environmentalparametersdataprocessingwithhigheraccuracyrequirements,ensurethegoodsinstorageenvironment,increasetheeconomicefficiencyofenterprises;2,usinglowpowercomponents,thepowerconsumptionwillbegreatlyreduced,reducingthepowerconsumptioncost;3,theadjustmentofenvironmentmonitoringtechnology,notonlycanobservedthedatainthemainequipmentonthesite,butalsoobservationthedatainanyPCequippedwithcorrespondingPCmachine,Theparametersofthemainequipment,setcommandtocompletethemonitoringandcontrolofthecombined,largelyreducemanpowerparticipationprocess.
OverallSystemDesignThesystemismainlycomposedofthreeparts,dataacquisitiondevice,controlcenter,hostcomputer.
(theoveralldesigndiagramofthesystemseeFig.
1).
Fig.
1theoveralldesignofthesystemControlledbyMCU,thedataacquisitionterminalusingtemperatureandhumiditysensorAM2321totemperatureandhumiditydatareal-timeacquisitionandthecollecteddatawereprocessedanddisplayedontheLCDscreen,alsothroughtheRS485serialcommunicationwouldbeprocessedbythedatatoPCdisplay,whenthetemperatureandhumidityexceedsthesettingupperandlowerlimit,thealarmdevicewillbeactivated.
HardwareDesignThecircuitdesignofdataacquisitionterminalFig.
2Thesystemblockdiagraminfigure2dataacquisitionMainlyusethehighprecisiontemperaturesensor,capacitivehumiditysensingelement,A/Dconverter,signalamplifierandahighperformanceembeddedmicrocontrollerintegratedconsistingofAM2321temperatureandhumiditysensortoachievethedatacollection.
Throughtheamplifiertocollectthedatasignalstrongerthannormal,andtheconversionofthecollecteddatathroughtheA/Dconverterinatimelymanner,sothattheoutputdigitalsignalismoreanti-interference.
DataacquisitioninthesystemblockdiagramasshowninFig.
2,thesmallestsystemconsistsofDC/DCvoltagestabilizer,resetcircuit,MSP430,crystalscircuitstructure,etc.
DatadisplayandalarmcircuitdesignTheMSP430ascontrolcenterprocessor,using2.
8inchalientekTFTLCDliquidcrystalmoduleasthedisplayunit,thecontrolcenteralarmandprompttheuserthroughthebuzzer,theNPNtriode8050asalarmcircuitswitch,whenbeepisa3.
3Vhighlevel,afterthevoltagedivision,thebasePowersupplymoduleIndicatingDC/DCvoltagestabilizerResetcircuitCrystalresonancecircuitMSP4301Temperatureandhumidity2TemperatureandhumiditycontrolcenterelectrodeoftheNPNtransistorstoobtainacontrolsignal,atthistimeofthetriodethreeterminalvoltagestatecollector>base>emitter,thetriodeismakethebuzzersounds,Similarly,whenthebeepislowlevel,thebuzzerdoesnotring.
DatadisplayandalarmcircuitdiagraminFig.
3.
Fig.
3DatadisplayandalarmcircuitmodulechartSDcardcircuitdesignControlcenterprocessorrunningFatFssystem,thesystemdirectlymountstheSDcard,theoperationtoachievethefunctionoflocalrecordsofthesystem.
TheFig.
4SDcardinterfaceisconnectedtotheSTM32schematicdiagramFATFSsystemssupportthesizeof1~32gSDcard.
SDcarddrivercircuitasfollowsinFig.
4,SDcarddriverusingSPImode,andtheSDcardconnecttotheSTM32processorSPI2,topullonthecontrolpintoensurethereliabilityofcommunication.
SoftwareDesignThedesignofthedataacquisitionterminalprogramAfteracquisitionterminalbootdeviceisinitialized,itischoosethemeasurementoftemperatureandhumidityonetworoad,thanallthewaybegantonormaldataDATA29CD/DATA31CMD2VSS3VDD4CLK5VSS6DATA07DATA18CD10GND11WP12SD_CARDsdcard104C28VCC3.
3GND112233445566P4SDCARD47KR2847KR2947KR3047KR3147KR32VCC3.
3NRF_CESPI2_MISOSPI2_SCKSPI2_MOSISD_CSNRF_IRQSDCARDNRF_CESPI2_MISOSPI2_SCKSPI2_MOSISD_CSNRF_IRQTFTLCDAlarmmoduleTemperatureandhumiditymoduleMSP430PowersupplymoduleStartDeviceinitializationSelectmeasurementmodeT&HcollectionCompletecollectionT&HNYNSendtocoordinatorthroughGPRSYENDTwoTEMPsignslscollectionTEMPNFig.
5Dataacquisitionterminalprogramflowchartacquisition,thedatawillbesenttothecoordinatorviaGPRSoncetheacquisitioniscomplete,thanrecycle.
ThedataacquisitionterminalprogramflowchartisasfollowsFig.
5.
PCsoftwaredesignThefriendlyhuman-computerinteractionenvironmentisanimportantfactorofthedesign.
ThisdesignusestheDelphi7.
0providestheuserswithavivid,intuitiveandeasyoperationoftheuppermachine.
Delphi7.
0hasdirectlycompiledexecutablecode,compilespeedcharacteristics,powerfuldataaccessandnetworkdevelopmentcapability,highreusability,scalability,strongsupportfortheaccessrulesaregiventotheclientorserverprocessingofthetwoprograms.
Thetemperatureandhumidityautomaticalarmrecordermachinehassimplestructure,highreliability,lowcost,andupdatespeed,systeminstallationprocesssimple,fastandconvenient.
Asshowinthefunction,TemperatureandhumidityautomaticalarmrecorderPCcanreal-timequeryreal-timedataofthespecifiedrecorder,Tocontrolthechangeofthefieldtestdataatanytime;Receivethealarmingsignalfromtherecorder,thefirsttimetounderstandthescenesituationandtimelydealwithemergencies;Remotesettingthealarmofthespecifieddatarecorderandthealarmfunctionofthespecifiedrecorderisopenedorclosed.
Itiscanbewidelyusedintheareas,suchascoldstorage,food,storageofvaccineswhichtemperatureandhumidityparametersneedtomonitored.
Itcansignificantlyimprovetheeffectofmanagement,makeupthedesignonlywithdatacollectionandprocessing,butwithoutremotecontrolterminalinthemarket.
SystemTestTodeployaPCmachinewithahostcomputerprogram,adevelopmentboardwithaliquidcrystaldisplayscreen,andacollectionof10environmentalparametersInalaboratory,testthedatatransmissionrate,powerconsumptionandcommunicationdistanceofthesystem.
Bystatistics,itis1-3secondforthehostPCtosendscommandandreceivethemeasurementparametersfromthe10collector,withasuccessrateof100%.
Thepartofthecollectionandtheresultsareshownintable1,thetestresultsshowthatthesystemhashighstabilityandsecurity.
Table.
1partdatacollectiontableTimeCollectorNo.
TemperatureHumidity10:23:05012.
043%10:23:05022.
043%10:23:06032.
043%10:23:06042.
043%10:23:07052.
543%10:23:07062.
543%ConclusionThesystemhasrealizedthereal-timemonitoringoftemperatureandhumiditydata,processing,transmission,andthefunctionofhuman-computerinteraction.
Thewholesystemusesmodulardesign,hardwarestructureissimpleandconvenientwiring,softwarefunctionisperfect,withsystematicupgrading,improvetheefficiencyoftheworkers,reducesthecost,willsignificantlyimprovethetraditionaltemperatureandhumiditydataprocessingwork.
Theprojectnameandnumber:BasedontheZigbeenetworkofkeytechniquesofseacucumberaquaculturewaterqualitymonitoring(J14LN82)References[1]HarryK.
H.
Chow,etal.
DesignofaRFIDcase-basedresourcemanagementsystemforwarehouseoperations[J].
ExpertSystemswithApplications30(2014),561-576.
[2]LuSuhong,MaFei.
Theapplicationoftheportabletemperatureandhumiditydetector[J].
Journalofhenanagriculturaluniversity,2013,47(2):162~166[3]YangYi.
Researchonthegreenhouseenvironmentmanagementsystem[D].
Shanghai:EastChinaUniversityofScienceandTechnology,2012[4]FengLiang.
Researchandsystemdesignoflowpowerstoragetemperaturecontrolsystem[D].
Shandong:ShandongUniversity,2014[5]YangWei,GaoWenhua,LuoHongda,etc.
.
DesignandresearchoftemperatureandhumiditymonitoringsystembasedonARM[J].
Journalofelectronicdesignengineering,2014,21(3):47~49
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