Rotational piezoelectric energy harvester for wearable devices
Electronic devices are mostly powered externally via batteries. The dependency on the recharging process limits the usage of these devices to work in a specified period of time. This research work highlights the capability of a piezoelectric energy harvester to generate sufficient electricity to...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Taylor and Francis
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/62106/ http://irep.iium.edu.my/62106/ http://irep.iium.edu.my/62106/ http://irep.iium.edu.my/62106/1/62106_Rotational%20piezoelectric%20energy%20harvester.pdf http://irep.iium.edu.my/62106/2/62106_Rotational%20piezoelectric%20energy%20harvester_SCOPUS.pdf http://irep.iium.edu.my/62106/3/62106_Rotational%20piezoelectric%20energy%20harvester_WOS.pdf |
| Summary: | Electronic devices are mostly powered externally via batteries. The dependency
on the recharging process limits the usage of these devices to work in a specified
period of time. This research work highlights the capability of a piezoelectric energy
harvester to generate sufficient electricity to power up electronic devices by using low
frequency vibrations alone, without relying on external power supplies. In general human
motions consists of low frequency vibrations, therefore the capability to power up
electronic devices using low frequency vibrations will also eventually become useful to
power up wearable devices. Simulations were conducted using COMSOL Multiphysics®
to identify the dimensions of a piezoelectric beam which will produce the optimum
level of voltage output. A specially fabricated rotational piezoelectric energy harvester
prototype that consists of a 40 mm piezoelectric bimorph beam that rotates with the
aid of a rotor and aluminum proof-mass was developed together with a corresponding
Arduino Uno based data logger. With a given input frequency of 18 Hz, the maximum
voltage output that could be generated was recorded at 0.024 V. This research highlights
the optimistic possibility that clean energy could be generated and utilized in
powering various applications without depending on external power supplies. |
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