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. 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 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. Customer Physical Therapy Clinic at Nazareth College J.J. Mowder-Tinney, PT, MS, NCS, CWS Project Timeline 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. Design Specifications and Test Results *values highlighted in yellow are the values achieved on the final prototype Specification Number Customer Need Number Design Specification Importance To Customer Unit of Measure Marginal Value Ideal Value Test Result Most Important 1 3,10,22, 7 Safe 9 Binary Pass All foreseeable hazards in the FMEA have been counteracted. 2 1,2,5,16,18,19 Tilt Range Degrees 0 - 8 0 - 15 Usable range for patients was determined to be 10.5 degrees. 3 Levels of Tilt Levels Infinite Inifnite levels of tilt with winch control. 4 10,22 Upright Locked Position Force test passed. 5 Tilt Resistance Range Lbs 0 - 150 0 to >150 6 3,21 Auditory Feedback of Tilt Decibels 50 - 80 25 - 80 Piezo audio indicators range from 60 dB to 81 dB. 7 4, 17 Non-alternating Handle Bars Traditional handlebars used. 8 10, 12 Seat Height Range (pedal to seat) Inches 27 - 34 <27 to >34 Actual range: 26 - 36 inches. 10, 13 Handlebar Height (vertical dist. - seat to handlebar) 9 - 10 <9 to >10 Actual range: 0 - 10 inches at each seat height 10 10, 14 Handlebar Reach (horizontal dist. - seat to handlebar) 15 - 19 <15 to >19 Actual range: 8 - 23 inches. 11 Cross member height 0 - 24 <12 Actual Height: 5 inches 12 13 Bike Capacity 90 - 300 Capable of withstanding atleast 310 lbs. Visual Feedback of Tilt Fail Survey test passed. 14 7, 14 Portability - Force needed to transport bike 51 <51 Max force needed to lift rear of bike: 50 lbs 15 Pedal Resistance Ft-Lbs Constant Variable Pedal resistance is variable with friction knob adjustment. 16 9, 12 Seat Size >10 10 - 12 Seat width: 12 inches 17 Adjustment Tools - Basic Tools Hand All adjstments can be made by hand. 18 7, 20 Force needed to bring patient to Upright Locked Position No manual force required. Winch can be used to upright patient. 19 Service Intervals Frequency Once/year Never Bearings and pulleys must be greased once per year. Least Important 20 Color   Visual and Audio Feedback Display 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” Winch Remote Control 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. 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. MULTIDISCIPLINARY ENGINEERING @ R I T Senior Design MERIT 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.