Resumen de Pendulum Generators to Power Wearable Devices from Human Motion
Edwar Romero, Albert A. Espinoza, Eduardo Castillo Charris, Dulce Mariscal, Jose Montoya, Bernardo Restrepo
This work analyzes the energy generation capability from human walking using pendulum-based generators. Energy harvesting is the process to extract energy from the surroundings to power small portable electronics. Literature for energy harvesters is mostly for linear devices whereas body motion has rotational components as well. The periodic swinging of the limbs is more suited for oscillating generators based on pendulum geometries, such as self-winding wristwatches. Wearable devices can benefit of harnessing energy from everyday activities, such as walking, to reduce battery size or the need for frequent battery recharges. This study discusses the energy availability of using inertial passive generators on body locations while walking. It is estimated that a miniature planar generator using an oscillating pendulum can scavenge from 0.1 mJ to over 20 mJ of energy from walking.
