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1、CapacitiveTactileSensingCapacitanceThebasicelectricalpropertyofcapacitance–ameasureofanobject’sabilitytostoreelectricalcharge–hasbeendemonstratedincountlessphysicsclasseswiththeclassicexampleoftwoelectrodeswithareaAseparatedbyanairgapdasshown.Iftheairgapdecreases
2、,thecapacitanceCgoesup. TactileSensorsPressureProfileSystemsusesthispropertytobuilditstactilepadsandarraysbyseparatingtheelectrodesusingaproprietarycompressibledielectricmatrix,whichactslikeaspring.Precisionmanufacturingtechniquesallowexcellentrepeatabilityandse
3、nsitivity,whileadvancedconductivematerialsallowforconformable,stretchable,industrial,andotherhybridsensordesigns.ThesimplicityofthecapacitivesensordesigngivesPPSalargedegreeofflexibilitywhencreatingcustomsensorsolutions. ArraySensorsTobuildtactilearraysensors,P
4、PSarrangestheelectrodesasorthogonal,overlappingstrips.Adistinctcapacitorisformedateachpointwheretheelectrodesoverlap.Byselectivelyscanningasinglerowandcolumn,thecapacitanceatthatlocation,andthusthelocalpressure,ismeasured.PPS’sproprietarydriveandconditioningelect
5、ronicscanscanthroughanarrayathighspeedwhileoptimizingsettingsto achievethemaximumsensorresponsefromeachsensingelement. SensorTechnologyComparisonUnlikewithsomeothertactilesensordesigns,capacitive-basedsensorsdonothavesignificantinternalwearandtearunderload.Since
6、thescaleofthedeflectionsissosmall,thereislittlechancefor“set”inthematerial,thusreducingthefrequencywithwhichcapacitivesensorsmustbecalibrated.Thefollowingtableshowsacomparisonofcapacitivesensorsversusthetwoothermostcommonapproaches,resistiveandpiezoelectrictactil
7、esensors. ChameleonTVRSoftwareChameleonTVR(TactileVisualization&Recording)SoftwareisPPS'snewuniversalapplicationforreal-timevisualization,acquisition,andplaybackofallPPSsensors.ChameleonTVRsoftwareallowsyoutovisuallyviewreal-timetactilepressuredataaswellasrecorda
8、ndexportspecificsegmentsformorecomplexanalysis.ChameleonTVR'sversatiledesignautomatically-reconfigurestosupporttheproperoptionsandfeaturesuniquetodifferentPPSs
