WSEAS Transactions on Circuits and Systems
Print ISSN: 1109-2734, E-ISSN: 2224-266X
Volume 23, 2024
Using Piezoelectric Elements to Convert Bio-Mechanical Pulsations into Electrical Energy for Energy Harvesting
Authors: , , ,
Abstract: On the Internet of Things (IoT) where all electronic devices are connected to the internet, a secure power
supply is necessary. Energy harvesting technology is attracting attention as ”enabling technology” that expands
the use and opportunities of IoT utilization. This technology harvests energy that dissipates around us, in the
form of electromagnetic waves, heat, vibration, etc. and converts it into easy-to-use electric energy. Alternating
current signals can be extracted from bio-mechanical pulsations using skin-attached piezoelectric elements with a
protrusion, as we reported previously. However, we found that the maximum voltage of the extracted signal was
unstable and low. This study demonstrates that piezoelectric elements can be stacked to stabilize and increase
the maximum voltage, and that the extracted signal can be used to charge a capacitor, after rectification using a
voltage-doubler rectifier circuit with Schottky barrier diodes.
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Keywords: Energy Harvesting, Piezoelectric Element, Pulsation, Protrusion, Schottky Barrier Diode, Voltage
Doubler Rectifier Circuit
Pages: 122-129
DOI: 10.37394/23201.2024.23.12