Abstract
Withthedevelopmentofdigitalsocietyandthedramaticincreaseinpeoplesdemandfor
networkinformation,datasecurityhasbecomeatoppriorityforindividuals,enterprisesand
evencountries.Traditionalsecuritymeasures,suchaspasswordsandtokens,althoughcan
provideacertaindegreeofprotectionforusers,buttherearestilllimitations:unauthorized
personsonlyneedtostealtheidentityofthedeviceholdertogaincontrolofthedevice,thus
facingtheriskofdataleakage.Atthesametime,thetraditionalkeyboardcannotbefoldedat
willduetoitslargesizeandrigidstructure,makingitdifficulttoadapttodifferentwork
scenariosandunabletomeetthepursuitofportabilityandflexibilityinmodernlife.Inorderto
effectivelysolvetheseproblems,thisthesisproposesaflexiblepiezoresistivekeyboard
identificationsystem,whichmainlyfocusesonthedesignandpreparationofflexible
piezoresistivekeyboard,hardwareadjustmentanddataacquisition,datasetproductionand
identificationalgorithmoptimizationtocarryoutresearchwork.Themainworkisasfollows:
(1)Byanalyzingandstudyingtheworkingprincipleandsensingmechanismofthesensor,
aflexiblepiezoresistivesensorwithhighsensitivity,highreliabilityandagileresponseis
designed,andtheperformancetestofthesensoriscompletedbyusingKeithley2611Bdigital
sourcemeterandtensileandcompressiontestingmachine.Dataanalysisshowedthatit
exhibitedasensitivityof86.1N-1intherangeof0N-0.9Nand16.0N-1intherangeof0.9
N-2.5Npressure.Inordertostudytheuserskeystrokebehaviormoredeeply,a26-letter
flexiblepiezoresistivekeyboardwassuccessfullypre