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E552E552Sensors & ActuatorsSensors & Actuators

Dec.9 Dec.9 20052005

FlexiForceFlexiForce®® Load/Force Sensors Load/Force Sensors

Team Members-Team Members- Pariksha TomarPariksha Tomar

Jaqueline WalterJaqueline Walter

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Outline of ProjectOutline of Project

► IntroductionIntroduction► Sensor informationSensor information -construction-construction -Mechanism & Behavior-Mechanism & Behavior► ApplicationsApplications► Project ScopeProject Scope -Experiment Set-up-Experiment Set-up -Analysis-Analysis► ResultsResults

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Outline of ProjectOutline of Project

► IntroductionIntroduction► Sensor informationSensor information -construction-construction -Mechanism & Behavior-Mechanism & Behavior► ApplicationsApplications► Project ScopeProject Scope -Experiment Set-up-Experiment Set-up -Analysis-Analysis► ResultsResults

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IntroductionIntroduction

►Flexiforce sensorFlexiforce sensor

- Force Sensor- Force Sensor

- Detect contact and /or touch- Detect contact and /or touch

- Detect or Measure rate of change of- Detect or Measure rate of change of

force etcforce etc►Why choose Flexiforce? Why choose Flexiforce?

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Outline of ProjectOutline of Project

► IntroductionIntroduction► Sensor informationSensor information --constructionconstruction -Mechanism & Behavior-Mechanism & Behavior► ApplicationsApplications► Project ScopeProject Scope -Experiment Set-up-Experiment Set-up -Analysis-Analysis► ResultsResults

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ConstructionConstruction

►ultra thin, Flexible circuitultra thin, Flexible circuit►pressure-sensitive inkpressure-sensitive ink ►active sensing area active sensing area ►male square pinsmale square pins►available in different lengthsavailable in different lengths

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Outline of ProjectOutline of Project

► IntroductionIntroduction► Sensor informationSensor information - construction- construction - - mechanism & Behaviormechanism & Behavior► ApplicationsApplications► Project ScopeProject Scope -Experiment Set-up-Experiment Set-up -Analysis-Analysis► ResultsResults

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Mechanism and BehaviorMechanism and Behavior

► inverse relation between force and resistanceinverse relation between force and resistance

► linear behavior between input and outputlinear behavior between input and output

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Outline of ProjectOutline of Project

► IntroductionIntroduction► Sensor informationSensor information -construction-construction -Mechanism & Behavior-Mechanism & Behavior► ApplicationsApplications► Project ScopeProject Scope -Experiment Set-up-Experiment Set-up -Analysis-Analysis► ResultsResults

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ApplicationsApplications

►Medical EquipmentMedical Equipment►Automotive Automotive ►Recreational/Entertainment Recreational/Entertainment ►Security DevicesSecurity Devices►Grip Forces Grip Forces

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Outline of ProjectOutline of Project

► IntroductionIntroduction► Sensor informationSensor information -construction-construction -Mechanism & Behavior-Mechanism & Behavior► ApplicationsApplications► Project ScopeProject Scope -Experiment Set-up-Experiment Set-up -Analysis-Analysis► ResultsResults

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Project ScopeProject Scope

To find location of force applied anywhere in To find location of force applied anywhere in triangular tabletriangular table

d1=d2=d3=d=20.3cmd1=d2=d3=d=20.3cm

x1=y1=0x1=y1=0

x2=10.15, y2=17.58x2=10.15, y2=17.58

X3=20.3, y3=0X3=20.3, y3=0

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Outline of ProjectOutline of Project

► IntroductionIntroduction► Sensor informationSensor information -construction-construction -Mechanism & Behavior-Mechanism & Behavior► ApplicationsApplications► Project ScopeProject Scope --Experiment Set-upExperiment Set-up -Analysis-Analysis► ResultsResults

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Experimental Set-upExperimental Set-up

►Triangular tableTriangular table

►Excitation circuitExcitation circuit

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Outline of ProjectOutline of Project

► IntroductionIntroduction► Sensor informationSensor information -construction-construction -Mechanism & Behavior-Mechanism & Behavior► ApplicationsApplications► Project ScopeProject Scope -Experiment Set-up-Experiment Set-up --AnalysisAnalysis► ResultsResults

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AnalysisAnalysis

Mathematical Equation Mathematical Equation

y=mx+cy=mx+c

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LabView VILabView VI

5.

4.

v2

v3

v1

v2

v3

v1

stop

dataInstance 9

v1Resultvmax1

Instance s1

v2Resultvmax2

Instance

vmax 2vmax 2

s2

vmax 1vmax 1

v3Resultvmax3

Instance s3

vmax 3vmax 3

s1s3

Result

Instance

x0

y0

v10

v20

v30

vmax 26.33771

vmax 16.29758

vmax 36.28427

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Outline of ProjectOutline of Project

► IntroductionIntroduction► Sensor informationSensor information -construction-construction -Mechanism & Behavior-Mechanism & Behavior► ApplicationsApplications► Project ScopeProject Scope -Experiment Set-up-Experiment Set-up -Analysis-Analysis► Results & commentsResults & comments

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Results & commentsResults & comments

one of the coordinate point of triangle is one of the coordinate point of triangle is insignificant in calculationsinsignificant in calculations

X0 & y0 are herebut

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► Tekscan solution: www.tekscan.comTekscan solution: www.tekscan.com

► Basic Mathematics: R.S. AgarwalBasic Mathematics: R.S. Agarwal

ReferencesReferences

Q?