Piezoelectric transducer applications for sound vibration energy harvesting: A case study of passing road vehicles

Abstract

This study was conducted to harvest the vibration of sound exists in our environment, as the energy harvesting circuit equipped with a piezoelectric transducer and a full-bridge rectifying circuit was designed and built. This paper discussed the transformation of the mechanical vibration (sound pressure) in the range from 85 dB to 140 dB into electrical energy (electric potential – voltage). Simulations that involved designing and determining the piezoelectric was conducted using COMSOL Multiphysics 5.3, whereas simulation of the harvesting circuit of the full-bridge rectifier was conducted by using Multisim. In the experimental work, a piezoelectric generator cantilever; aluminium cantilever with a lead zirconate titanate (PZT-5A) piezoelectric generator was built to extract sound energy from passing road vehicles. Results obtained from both simulation and experimental work were analyzed, suggesting that the piezoelectric transducer is capable for harvesting the vibration of sound from the passing road vehicles.This study was conducted to harvest the vibration of sound exists in our environment, as the energy harvesting circuit equipped with a piezoelectric transducer and a full-bridge rectifying circuit was designed and built. This paper discussed the transformation of the mechanical vibration (sound pressure) in the range from 85 dB to 140 dB into electrical energy (electric potential – voltage). Simulations that involved designing and determining the piezoelectric was conducted using COMSOL Multiphysics 5.3, whereas simulation of the harvesting circuit of the full-bridge rectifier was conducted by using Multisim. In the experimental work, a piezoelectric generator cantilever; aluminium cantilever with a lead zirconate titanate (PZT-5A) piezoelectric generator was built to extract sound energy from passing road vehicles. Results obtained from both simulation and experimental work were analyzed, suggesting that the piezoelectric transducer is capable for harvesting the vibration of sound from the passing road v...