Predictive energy harvesting from mechanical vibration using a circular piezoelectric membrane

Abstract

In this study, we have investigated the capability of harvesting electrical energy from mechanical vibrations in a dynamic environment thanks to a circular piezoelectric membrane transducer. We have established an electromechanical model to predict the ability of the transducer to produce electricity. We have expressed a direct relation between the voltage able to be harvested and the acceleration of the surrounding vibrations. We have performed experiments to validate our model with a macroscopic 25 mm diameter piezoelectric membrane.