Exercise to Energy: A Bicycle-Powered Charger

Howell, Alexandra
Roistch, Daylon
Wollert, Taylor
Bicycles offer effective means of exercise and are popular forms of transportation. One fault of the current use of bicycles is that the mechanical energy generated by a moving bicycle is often wasted in the form of friction and expended heat. This is troubling in the modern world since energy is deeply integrated into peoples' everyday lives – one of the most common energy consumers being small electrical devices such as cellphones and iPods. Our senior design project addresses this issue via a bicycle-powered charging system designed to operate similar to a normal commercial bicycle trainer. The charging system will be composed of a trainer and charging system. The trainer will be based on a standard retail bicycle trainer to enable easy transition from road use for transportation and recreation to stationary use for exercise. The charging system will be capable of charging a 12 V battery pack, which will then be able to charge multiple 5 V devices simultaneously. For the final product, the ATV generator will be connected to a removable battery pack capable of charging during system operation and storage for use after operation. The prototype we create will utilize a purchased trainer for design, but, since this prototype is intended to evolve into a commercial product that is premade and easy to self-install, we also will complete the design and cost estimation of a commercial frame. For this presentation, I will expound on my individual contributions, knowledge and learning experienced during the completion of this engineering senior design group project.
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