Piezoelectric Storing Circuit Design

Norezmi, Md Jamal (2013) Piezoelectric Storing Circuit Design. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Vibration energy is a wasted energy that can be captured from the surrounding of us for beneficial purpose. The aim of this project is to create a piezoelectric storing circuit designed for event trigger application that harvest energy from ambient vibration sources. A super capacitor is used as the storage element for the energy transformed from mechanical vibration to electrical. A bridge rectifying and filter circuit is used to convert the piezoelectric AC voltage to DC voltage before being stored. As we know, energy harvesting devices are self generated and self powered that normally used for activating low power electronic components which have low electrical power consumption. This project uses the vibration energy, which is in the form of mechanical energy that needs to be transformed into the useful electrical energy using piezoelectric device. Besides that, in this project, the circuit used for the application is designed and analyzed for its charging and discharging performance using a range of difference storing elements. A series of experiments are carried out to verify simulation and theoretical calculation. The setup for the experiment is done in laboratory with dynamic shaker as the source of vibration to test the piezoelectric and the storing circuit. Alternate blinking LEDs will be used to indicate the functional ability of piezoelectric storing circuit as the output result of the project. As a conclusion, this project demonstrates a self-powered sustainable electronic system for long lasting low power electronic operation.

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