A flapping-based piezoelectric power generator for bicycle applications

We demonstrate a novel structure of a flapping-based piezoelectric power generator for bicycle pedals. The flapping structure and the circuit configuration have been proposed, and the effectiveness of the proposed structure is experimentally evaluated by the bicycle trainer. In the proposed structure, the number of lights can be freely selected by changing the number of flapping poles, and the light colors of the front and rear LEDs can be automatically switched by using the pedaling force. In addition, the flapping-based piezoelectric power generator can be easily applied to the commonly-used bicycle pedals.