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Assistive Walking Device Development Project Overview

An innovation initiative aiming to create a versatile walking assistive device for indoor and outdoor use to empower the disabled community. The project includes designing and building a research platform using force-driven user input system. Specifications include aluminum framing, up to 300 pounds support, and advanced control functions. The project is focused on maximizing versatility, robustness, and user-friendliness while minimizing costs. Current progress involves finalizing design modifications and testing components for assembly. Future work includes completing the final order, conducting testing, and preparing the final report for an open house presentation.

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Assistive Walking Device Development Project Overview

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  1. Mid Point Review Report Team # 17 Michael Bunne, John Jagusztyn, and Jonathan Lenoff Department of Mechanical Engineering, Florida State University, Tallahassee, FL Project Sponsor: Project Advisors: Dr. Emmanuel G. Collins, Ph.D Department of Mechanical Engineering Dr. Oscar Chuy, Ph.D Department of Mechanical Engineering

  2. Introduction • Problem Statement • The current generation of assistive walking devices is limited in their traversable terrain and functionality. • Indoor operation only • Only perform basic functions • Scooters / electric wheelchairs unnecessary or expensive • Proposed Solution • Develop a walking assistive device designed to actively assist the user in both indoor and outdoor maneuverability. • Further empower the disabled and elderly community • Offer wide-range of assistive functions • Maintain ease of use and intuitiveness integral to current generation walkers • Project Scope • Design and build an initial research platform • Traverse indoor & outdoor terrains • Utilize a force-driven user input system • Facilitate simple future enhancement 1 of 8

  3. Criteria • Maximize: • Versatility • Robustness • User-friendliness • Indoor operation • Outdoor operation • Minimize: • Cost • Weight Specifications • Frame • Resemble current generation walker in aesthetics and standards • Aluminum framing • Supports up to 300 pounds • Adjustable heights between 32 and 39 inches • Adjustable handle width between 14 and 23 inches • Propulsion • Minimum 11 inch diameter wheels or tracks • Travel over all indoor surfaces, grass, gravel… • Travel up or down slopes up to 10 ° • Move transversely 45° from the center axis • Maximum operating speed of 3 mph • Control & Function • Intuitive user input • Force-based drive control • Fall Prevention • Sit-Down/Stand-Up Assistance • Object Detection/Avoidance • Localization & Navigation 2 of 8

  4. Design Modifications • Handle Depth 24.5in 14 in 21in 39in 43.5in 29in 22.5in 25in • Suspension Orientation • Suspension Orientation • Frame / Supports • Frame / Supports • Handle Depth ` • Driving Motor Encoder (previous design) (new design) 3 of 8

  5. Design Finalization • Final Ordering • Small connectors • Fasteners • Receiving • Handle Assembly • Steering Motor • Driving Motor • Driving Wheels • Batteries • Machining • Initial Testing Current Status 4 of 8

  6. Steering Motors Driving Motors & Encoders Air Shocks Completed Tests 5 of 8

  7. Potential Problems: Delivery Delay Machining Back-up Unforeseen Assembly Difficulties Minimum Spring Stiffness Steering Motor Torque Future Work • Complete Final Order • Finalize Machine Drawings • Machine Components • Further Air Shock Tests • Assemble Components: • Handles • Frame • Suspension • Basic Controls • Full Assembly Testing/Modification • Final Report • Open House 6of 8

  8. Budget 7of 8

  9. Timeline 8of 8

  10. Questions?

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