Design Challenges in Assistive TechnologyOutline…Design ProcessPerspectiveDesign Challenges in Assistive Design Challenges in Assistive TechnologyTechnologyDoug SchwandtDoug SchwandtENGR110ENGR110--210, February 19, 2008210, February 19, 2008Perspectives in Assistive TechnologyPerspectives in Assistive TechnologyOutline…Outline…••Design ProcessDesign Process••Project Examples: Project Examples: ––HandbikeHandbike/Sunburst /Sunburst ––armarm--powered bikespowered bikes––InterInter--Limb Resistance Limb Resistance ––space exercise space exercise ––KineKine--Assist Assist ––robot assist for physical therapyrobot assist for physical therapy••PerspectivePerspectiveDesign ProcessDesign Process••Need (create one if necessary; be passionate)Need (create one if necessary; be passionate)••StateState--ofof--thethe--Art (it may already exist)Art (it may already exist)••Conceptual Design (this is the fun phase)Conceptual Design (this is the fun phase)••Select Preferred Concept (tools/intuition)Select Preferred Concept (tools/intuition)••Detail Design/Analysis (don’t give up!)Detail Design/Analysis (don’t give up!)••Working Prototypes (make it work, sleep deprivation)Working Prototypes (make it work, sleep deprivation)••Testing (does it really work?)Testing (does it really work?)••Final Device (deliver something good)Final Device (deliver something good)••Documentation (you’ll build on it; share the credit)Documentation (you’ll build on it; share the credit)••Technology Transfer (get it out there!)Technology Transfer (get it out there!)Features Features ••ArmArm--Powered Bike for People with Powered Bike for People with Lower Limb DisabilityLower Limb Disability••Adjustable SideAdjustable Side--Wheels up for TwoWheels up for Two--Wheeling and Fastened Down for Wheeling and Fastened Down for TransferTransfer••Multiple GearsMultiple Gears••Folding Crank Tower for Easy AccessFolding Crank Tower for Easy Access••Steer to BalanceSteer to BalanceApplications Applications ••Recreation, Transportation, Recreation, Transportation, Competition, ExerciseCompetition, ExerciseCommercializationCommercialization••Recreational Mobility Inc. (1983Recreational Mobility Inc. (1983--1984)1984)••New Dimensions Design, Inc. (1992New Dimensions Design, Inc. (1992--1996)1996)••Mobility Engineering, Inc. (1996 Mobility Engineering, Inc. (1996 --present) present) www.www.mobilityengmobilityeng.com.com``Principal Designer:Doug Schwandt, MSBicycle Frame Builders/Designers: Keith Bontrager Gary Hale Peter JohnsonTim PaterekChris SchwandtOther Significant Design Contributions:Gordon Abraham, MSJim Anderson, JEMPeter Axelson, MSPhil Barkan, PhDIrv HousingerLarry Leifer, PhDCandy Mintz, PhDFred TatchHandbike Handbike ArmArm--Powered BicyclePowered BicycleFeaturesFeatures••Arm/FootArm/Foot--Powered Bike for AblePowered Bike for Able--Bodied Bodied and Disabled to Shareand Disabled to Share••Separate Gearing for Recumbent Front Separate Gearing for Recumbent Front RiderRider••Upright Rider in Back SteersUpright Rider in Back Steers••Not Only for Disabled RidersNot Only for Disabled Riders••Easy to Communicate and See AheadEasy to Communicate and See AheadApplicationsApplications••Recreation, Transportation, Competition, Recreation, Transportation, Competition, ExerciseExerciseCollaborationCollaboration••British Columbia Provincial Program for British Columbia Provincial Program for 1981 International Year of the Disabled 1981 International Year of the Disabled Program thru Program thru UnivUnivBCBCUnrelated CommercializationUnrelated Commercialization••CounterPointCounterPointConveyance, Inc.Conveyance, Inc.––Jim WeaverJim Weaver••Viewpoint TandemViewpoint Tandem––Bilenky’sBilenky’sCycle Works Ltd. Cycle Works Ltd. ViewPointViewPoint––http://www.http://www.bilenkybilenky.com/index..com/index.htmhtmPrincipal Designer:Doug Schwandt, MSBicycle Frame Builders/Designers: Gary Hale Keith Bontrager Significant Design Contributions:Jim Anderson, JEMBritish Columbia Collaborators:Marshal Smith, Provincial Prog Admin, Disabled AthleteKate Hunter-Zaworski, PhDShayna Hornstein, PTSunburst & Sunburst & HandbikeHandbikeTandemTandemInterInter--Exercise DeviceExercise DeviceInvestigators: Scott Parazynski, MD (Astronaut)Alan Hargens, PhDDesign/Fabrication:Doug Schwandt, MSJim Anderson, JEMDonna Hooker (JSC Contractor)Maurice LeBlanc, MS CPOLin Liang, PhDRuss HaysNASA-VA Collaboration:• Space Exercise (NASA)• Rehab Exercise Potential (VA)Tests On-Board NASA’s KC-135 Parabolic Flight Microgravity SimulatorOn-Board STS-66 space shuttle launchJim machines ILR flight hardware Limb Resistance Limb Resistance Space Physiology Laboratory, NASA Ames Research Centerhttp://spacephysiology.arc.nasa.gov/KineAssistKineAssistTM TM ----Physical TherapyPhysical TherapyPrincipals:David Brown, PhDEdward Colgate, PhDMichael Peshkin, PhDClinical/Marketing:Ela Lewis, MSPT, NCSJames Patton, PhDRehab Institute of ChicagoEngineering/Design:Julio Santos-Munne’Director of Engineering Alex Makhlin, MSTom Moyer, MSDouglas Schwandt, MSConcept Development & Human Interface Design:IDEO (Evanston)Features Features ••Assist clinicians in gait Assist clinicians in gait & balance training, in a & balance training, in a functional context.functional context.••Challenge clients to Challenge clients to their maximum limits their maximum limits without increasing the without increasing the risk of falls. risk of falls. ••Maintain consistency Maintain consistency with current practice with current practice and infrastructure.and infrastructure.••Allow more therapy, by Allow more therapy, by minimizing set up time.minimizing set up time.••Will be used during Will be used during transition, standing transition, standing balance, ambulation and balance, ambulation and dynamic balance dynamic balance therapy.therapy.Assistive Device for Assistive Device for http://kineadesign.com/portfolio/kineassist/HapticHapticTactorTactor----Prosthetic Prosthetic HapticHapticInterface SystemInterface SystemFeatures Features ••Revolutionizing Revolutionizing Prostheic’sProstheic’sProgram, Program, DARPA.DARPA.••Return the sense of Return the sense of touch to amputees. touch to amputees. ••Fingertip sensor.Fingertip