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基于Flex无线传感技术的边坡位移监测研究.docx

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基于Flex无线传感技术的边坡位移监测研究 Abstract Wirelesssensornetworkshavebeenincreasinglyusedformonitoringanddecision-makingincivilengineering.Inthisstudy,weproposeawirelessmonitoringsystembasedonFlexsensingtechnologytomonitorthedisplacementofslopes.Speciallydesignedwirelesssensornodeswereinstalledintheupper,middle,andlowerpartsofthetestedslope,andthedisplacementdatawerecollectedandanalyzed.ResultsshowedthattheuseoftheFlexsensingtechnologyhashighaccuracyandstabilityinmonitoringthedisplacementofslopes. Introduction Slopeinstabilityisamajorconcernincivilengineering,particularlyinareaswithsteeptopographyandfrequentgeologicalhazards.Monitoringthedeformationanddisplacementofslopesiscrucialtopredictslopefailuresandtoimplementtimelypreventionmeasures.Traditionalmethodsofslopemonitoringrequiremanualinspectionandvisualobservation,whicharetimeconsuming,labor-intensive,andmaynotbeeffectiveindetectingsmallorslowmovementofslopes.Therefore,thereisanurgentneedforanautomatedandwirelessmonitoringsystemthatcanprovidereal-timedataonslopedisplacement. Wirelesssensornetworkshavebeenwidelyusedinnumerousfieldssuchasenvironmentalmonitoring,structuralhealthmonitoring,andgeotechnicalengineering.Inrecentyears,wirelesssensornetworkshaveproventobeaneffectivetoolforslopemonitoringduetotheirlowcost,easeofinstallationandhighaccuracy.Flexsensingtechnologyisatypeofwirelesssensingtechnologythatusesflexiblestrainsensorstomeasurethedeformationanddisplacementofstructures.Flexsensingtechnologyhasbeenappliedsuccessfullyinbridgehealthmonitoring,butitsapplicationinslopemonitoringhasnotbeenfullyexploredyet. Inthisstudy,weproposeawirelessmonitoringsystembasedonFlexsensingtechnologytomonitorthedisplacementofslopes.Theobjectiveofthisstudyistoevaluatetheperformanceandaccuracyofthewirelessmonitoringsystem. Methodology Thewirelessmonitoringsystemconsistsofthreeparts:thesensornodes,thegatewayandthedataacquisitionandprocessingsystem.Thesensornodesaresmallandflexible,andareinstalledontheslopestomeasurethedeformationanddisplacement.T