1. Balance Training Bicycle Senior Design Project 8001 Team Members : Jonathan Bawas (EE), Carl Mangelsdorf (ME), James Nardo (ME), Jeffrey Tempest (ME), Jennifer Zelasko (IE) Faculty Guide : Elizabeth DeBartolo, Ph.D. This material is based upon work supported by the National Science Foundation under Award No. BES-0527358. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation. Problem Patients with neurological disorders who require physical therapy training on a stationary bicycle may experience a challenge of balance when transitioning to a traditional bicycle. Key Objectives 1. Design a mechanical system that mimics the lateral movements of a traditional bicycle. 2. Design and implement a control system to enable variable resistance of bicycle leaning characteristics. 3. Provide feedback to the patient and PT to indicate specific angles at which balance requires correcting, or imminent tip over conditions are present. Potential Future Improvements 1) Integrate winch with feedback system to automatically adjust level of tilt, and eliminate the need for the therapist to manually adjust range of tilt. 2) Use magnetic resistance pedal assembly in place of friction resistance assembly. 3) Construct frame from lightweight aluminum. Design Specifications and Test Results *values highlighted in yellow are the values achieved on the final prototype December - Planning Interview Customer Develop Customer Needs December – Concept Development Benchmarking Concept Generation Concept Evaluations Pick the Concept! January – System Level Design Risk Assessment Proof of Functionality February – Detailed Design Bill of Materials Detailed Drawings Review with Customer Risk Mitigation March - Construction Gather Materials Assembly April – Test Functionality Performance Debugging May – Field Demo Deliver Bike to Customer Technical Paper Customer Physical Therapy Clinic at Nazareth College J.J. Mowder-Tinney, PT, MS, NCS, CWS Project Timeline A special thanks to the National Science Foundation for sponsoring our project, as well as G&G Fitness, and Bert’s Bikes for your generous contributions. Telescoping Seat Height w/ Pin-lock Pivoting Arm w/ Locked Positions Pillow Block Ball Bearing To Allow Lateral Tilt (X2) Pedal With Built In Resistance Knob (Purchase) Wheels For Portability Spring compression adjusted with Winch Winch Placement Pulley Mechanism Pin-lock control for upright “Locked Position” Specificatio n Number Customer Need Number Design Specification Importanc e To Customer Unit of Measure Marginal Value Ideal ValueTest Result Most Important13,10,22, 7Safe9BinaryPass All foreseeable hazards in the FMEA have been counteracted. 21,2,5,16,18,19Tilt Range9Degrees0 - 80 - 15Usable range for patients was determined to be 10.5 degrees. 31,2,5,16,18,19Levels of Tilt9Levels3InfiniteInifnite levels of tilt with winch control. 410,22Upright Locked Position9BinaryPass Force test passed. 51,2,5,16,18,19Tilt Resistance Range9Lbs0 - 1500 to >150Force test passed. 63,21Auditory Feedback of Tilt9Decibels50 - 8025 - 80Piezo audio indicators range from 60 dB to 81 dB. 74, 17Non-alternating Handle Bars9BinaryPass Traditional handlebars used. 810, 12Seat Height Range (pedal to seat)9Inches27 - 34 34Actual range: 26 - 36 inches. 910, 13Handlebar Height (vertical dist. - seat to handlebar)9Inches9 - 10 10Actual range: 0 - 10 inches at each seat height 1010, 14 Handlebar Reach (horizontal dist. - seat to handlebar)9Inches15 - 19 19Actual range: 8 - 23 inches. 1110Cross member height9Inches0 - 24<12Actual Height: 5 inches 1213Bike Capacity9Lbs90 - 300 Capable of withstanding atleast 310 lbs. 133,21Visual Feedback of Tilt3BinaryFailPassSurvey test passed. 147, 14Portability - Force needed to transport bike3Lbs51<51Max force needed to lift rear of bike: 50 lbs 1511Pedal Resistance3Ft-LbsConstantVariablePedal resistance is variable with friction knob adjustment. 169, 12Seat Size9Inches>1010 - 12Seat width: 12 inches 176Adjustment Tools3-Basic ToolsHandAll adjstments can be made by hand. 187, 20 Force needed to bring patient to Upright Locked Position9Lbs51<51 No manual force required. Winch can be used to upright patient. 196Service Intervals1 Frequenc yOnce/yearNeverBearings and pulleys must be greased once per year. Least Important2015Color1BinaryPass Survey test passed. Visual and Audio Feedback Display Winch Remote Control