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Helical Piezoelectric Energy Harvester and Its Application to Energy Harvesting Garments

In this paper, we propose a helical piezoelectric energy harvester, examine its application to clothes in the form of an energy harvesting garment, and analyze its design and characteristics. The helical harvester is composed of an elastic core and a polymer piezoelectric strap twining the core. The...

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Detalles Bibliográficos
Autores principales: Kim, Minsung, Yun, Kwang-Seok
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6190457/
http://dx.doi.org/10.3390/mi8040115
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author Kim, Minsung
Yun, Kwang-Seok
author_facet Kim, Minsung
Yun, Kwang-Seok
author_sort Kim, Minsung
collection PubMed
description In this paper, we propose a helical piezoelectric energy harvester, examine its application to clothes in the form of an energy harvesting garment, and analyze its design and characteristics. The helical harvester is composed of an elastic core and a polymer piezoelectric strap twining the core. The fabricated harvester is highly elastic and can be stretched up to 158% of its initial length. Following the experiments using three different designs, the maximum output power is measured as 1.42 mW at a 3 MΩ load resistance and 1 Hz motional frequency. The proposed helical harvesters are applied at four positions of stretchable tight-fitting sportswear, namely shoulder, arm joint, knee, and hip. The maximum output voltage is measured as more than 20 V from the harvester at the knee position during intended body motions. In addition, electric power is also generated from this energy harvesting garment during daily human motions, which is about 3.9 V at the elbow, 3.1 V at the knee, and 4.4 V at the knee during push-up, walking, and squatting motions, respectively.
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spelling pubmed-61904572018-11-01 Helical Piezoelectric Energy Harvester and Its Application to Energy Harvesting Garments Kim, Minsung Yun, Kwang-Seok Micromachines (Basel) Article In this paper, we propose a helical piezoelectric energy harvester, examine its application to clothes in the form of an energy harvesting garment, and analyze its design and characteristics. The helical harvester is composed of an elastic core and a polymer piezoelectric strap twining the core. The fabricated harvester is highly elastic and can be stretched up to 158% of its initial length. Following the experiments using three different designs, the maximum output power is measured as 1.42 mW at a 3 MΩ load resistance and 1 Hz motional frequency. The proposed helical harvesters are applied at four positions of stretchable tight-fitting sportswear, namely shoulder, arm joint, knee, and hip. The maximum output voltage is measured as more than 20 V from the harvester at the knee position during intended body motions. In addition, electric power is also generated from this energy harvesting garment during daily human motions, which is about 3.9 V at the elbow, 3.1 V at the knee, and 4.4 V at the knee during push-up, walking, and squatting motions, respectively. MDPI 2017-04-04 /pmc/articles/PMC6190457/ http://dx.doi.org/10.3390/mi8040115 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Minsung
Yun, Kwang-Seok
Helical Piezoelectric Energy Harvester and Its Application to Energy Harvesting Garments
title Helical Piezoelectric Energy Harvester and Its Application to Energy Harvesting Garments
title_full Helical Piezoelectric Energy Harvester and Its Application to Energy Harvesting Garments
title_fullStr Helical Piezoelectric Energy Harvester and Its Application to Energy Harvesting Garments
title_full_unstemmed Helical Piezoelectric Energy Harvester and Its Application to Energy Harvesting Garments
title_short Helical Piezoelectric Energy Harvester and Its Application to Energy Harvesting Garments
title_sort helical piezoelectric energy harvester and its application to energy harvesting garments
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6190457/
http://dx.doi.org/10.3390/mi8040115
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