Bicycle Harvesting Waste Energy: Bicycle Power Generation MSD-I RIT-Systems Design Review Winter/Spring P12414 January 13, 2012 Group # P12414 Guide Professor Brownell

Team Members Daniel Tobin (ME) ▫Project Manager Amina Purak (ISE) ▫Facilitator Aaron Sieczkarek (ME) ▫Chief Engineer Brenda Lisitano (ME) Zheng “Flora” Li (EE) GUIDE: Professor Brownell

Design Review Agenda Project Background ▫Summary ▫Constraints/Needs/Specifications Functional Analysis ▫Functional Decomposition ▫House of Quality Concept Development & Selection ▫Pugh Square ▫Systems Architecture Risk Assessment

Constraints Harvest the energy from the momentum of the moving bicycle. The unit price should be affordable; the primary target is for developing countries. The design shall be ergonomic The product should be weather/water resistant. It is preferable to manufacture and assemble components in-house from raw materials where feasible. Project success will be based on how fast the technology could be reproduced or re- manufactured by individuals with low levels of training or exposure. Budget Estimate: Major cost items anticipated. Product Benchmarking$150 Prototype construction$350 Testing$100 TOTAL$600

Customer Needs Objective: Power simple personal devices using energy stored in the momentum of a bicycle Importance Weight Need #Customer Needs low = 1, moderate = 3, high = 9 Need 1The device provides power to charge a cell phone or a rechargeable battery to power LED lighting 10 Need 2The device attaches to a wide variety of bicycle types 6 Need 3The device adds only a minimal increase in effort for the operator pedaling the bicycle, ideally none at all 4 Need 4The device uses standard connectors to personal electronic devices 8 Need 5The device is light weight 4 Need 6The device is inexpensive to purchase, install and maintain 7 Need 7The device is easy to install 5 Need 8The device is easy to operate 6 Need 9The device is easy to maintain 6 Need 10The device resists environmental damage from dust, water, etc. 8 ( Need 11The device works well on rough roads 8 Need 12The device protects user safety 8 Need 13The device is a stylish accessory to the bicycle3

Specifications UnitsIdealMarginal Output voltageVDC Power outputW>5>2 Energy Conversion Efficiency% Maximum charging rate range (depends on battery)J/s Estimated biking time to generate power 1 W-hr (if the device does not generate continuously)hrs<0.5<1 Maximum increased effort for bicyclist%0<3 Variation in bicycle dimensions (actual specs will depend on design of generating system, "wheel sizes range" for example) Uses standard connectors to interface with cell phone or battery charger for LEDsbinaryYes Weightkg<1<3 Number of people required to install devicepeople12 Number of tools required to install device <2<5 Time required for set up (each use)min<10<20 Time to train operator to use devicemin<10<30 Minimum operating temperaturedegrees C<0<5 Maximum operating temperaturedegrees C>45>40 Increased temperature to bicycle parts (rim, gears, ??) Manufactured Cost (lots of 100)$<20<40 Installation Cost$0<5 Wires resist pulling forcesN Electronics protected from rain/splashingbinaryyes Resists damage from impacts/crashesN People rating the device at 4 or above on a scale of 1-5 for "aesthetically appealing"%7050

House of Quality

Pugh Square Analysis Concept Selection and Brainstorming Datum (Based of of MIT Model)

Store Power Convert Energy Condition Power Regulate Power Distribute Power Monitor Power Protect User From Electrical Shock Protect Device From Impact Attach Power System Attach UI Attach Personal Electronics Protect User From Physical Harm Protect Device From Installation Error Protect Device From Operating Error Protect from Particulates Protect from Water Protect from Temperature Protect from Vibration Functional or Physical Elements Flow of forces or energyFlow of materialFlow of signals or data Bicycle Energy Harvesting System Schematic

Store Power Convert Energy Condition Power Regulate Power Distribute Power Monitor Power Protect User From Electrical Shock Protect Device From Impact Attach Power System Attach UI Attach Personal Electronics Protect User From Physical Harm Protect Device From Installation Error Protect Device From Operating Error Protect from Particulates Protect from Water Protect from Temperature Protect from Vibration Cluster Elements into Chunks Enclosure Attachments Logic Board User Interface Rechargeable Batteries Generator Manual or Instructions Functional or Physical Elements Chunks

Risk Assessment

Risk Assessment cont…

Questions/Discussion?