Simulation and Analysis of Piezoelectric Energy Harvesting Device: Effects of Applied Weight on Output Voltage

Piezoelectric devices represent a groundbreaking technology that enables the capture and conversion of mechanical energy from human motion into electrical energy. Such advancements have spurred the simulation of piezoelectric energy harvesting (PEH) devices, which hold significant potential in the realm of renewable energy technologies. In this study, a disk-type piezoelectric sensor was simulated, employing an electrostatic mathematical equation to replicate the mechanical force exerted by a load on the PEH device. Seven different weights, ranging from 4 kg to 11 kg, were tested on the piezo disk to examine their impact. The COMSOL software was utilized for comprehensive analysis. The outcomes revealed that the highest output voltage, reaching 3.1 V, was generated by the piezoelectric device when subjected to the highest weight and prolonged walking movement. These results strongly indicate that the force applied to the piezoelectric device significantly influences its output voltage. This research provides valuable insights into optimizing the performance of piezoelectric energy harvesting devices, which can find applications in powering electronic devices and mobile technologies. Future investigations may explore the scalability and feasibility of implementing piezoelectric energy harvesting devices in diverse fields, including healthcare and sports industries.