Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
P12414: Bicycle Energy Harvester 2011-2012 Objective: To transform mechanical energy produced riding a bicycle into electrical energy with intention to charge a cell phone. Our device is designed to be cheap to build, easy to install, maintain and use. Background and Motivation: People in countries with inadequate infrastructure have an unmet need for electricity. Sources for creating and storing power are difficult to obtain. This system provides the energy required for communication, light and water treatment. Brenda Lisitano – ME [2] Dan Tobin – ME [5] Aaron Sieczkarek – ME [4] Zheng (Flora) Li - EE [1] Amina Purak - IE [3] Concept Selection: Initial concepts taken into consideration include harvesting energy via vibration, building a generator with magnets on the spokes, a hub generator and the final design of a roller with a motor. Ease and reproducibility of power harvesting is the main reason for final selection. Figure 2: Motor Assembly [CAD] Figure 1: Electronics Box Assembly Figure 3: Electronics Box Assembly [CAD] Figure 4: Motor Housing Assembly Program: Solidworks Total Part Files: 29 Distinct Parts GND IN OUT 2 1 3 1 U4 LM340-5 12V DC motor C7 10u C8 10u C9 .1u A-type USB Connector 4 Circuit Discussion: The circuit for the device conditions and regulates the electric power generated by a 12V DC motor. The three capacitors stabilize the non-linear voltage input while a 5V voltage regulator reduces the voltage to a 5V constant output. The power is supplied to small electronic devices via an A-type USB connector which is standard. 0 Figure 4: Voltage Regulating Circuit In order to harvest the bicycles energy the device must output a minimum voltage. This voltage will then be transferred to a device to store the energy for later use. Figure 6: Required Velocity Specification Units Ideal Value Actual Value Device Cost $(US) <20 $16.62 Range of Bikes Tire size (cm)/(in) 60.6-71.1(cm)/ 24-28 (in) 60.96-68.58(cm)/ 24-27(in) Range of Phones % of top 10 selling Haitian phones 90% Dust Proof IEC60529 Level 6 6 Water Proof IEC60529 Level 4 4 Results & Conclusions: Our device shows promise for a system that can be manufactured and utilized in countries such as Haiti Future Recommendations: System optimization can be completed by creating iterations with less parts for mass production. Also, waste energy collection can be implemented into the system design. Acknowledgements- Special thanks to Ms. Sarah Brownell, R Community Bikes, Gerry Garavuso For more information please visit our website at : https://edge.rit.edu/content/P12414/public/Home