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Ultra-Low Frequency Eccentric Pendulum-Based Electromagnetic Vibrational Energy Harvester

With the development of low-power technology in electronic devices, the wireless sensor network shows great potential in applications in health tracing and ocean monitoring. These scenarios usually contain abundant low-frequency vibration energy, which can be collected through appropriate energy con...

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Autores principales: Li, Mingxue, Deng, Huichao, Zhang, Yufeng, Li, Kexin, Huang, Shijie, Liu, Xiaowei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7696301/
https://www.ncbi.nlm.nih.gov/pubmed/33207547
http://dx.doi.org/10.3390/mi11111009
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author Li, Mingxue
Deng, Huichao
Zhang, Yufeng
Li, Kexin
Huang, Shijie
Liu, Xiaowei
author_facet Li, Mingxue
Deng, Huichao
Zhang, Yufeng
Li, Kexin
Huang, Shijie
Liu, Xiaowei
author_sort Li, Mingxue
collection PubMed
description With the development of low-power technology in electronic devices, the wireless sensor network shows great potential in applications in health tracing and ocean monitoring. These scenarios usually contain abundant low-frequency vibration energy, which can be collected through appropriate energy conversion architecture; thus, the common issue of limited battery life in wireless sensor devices could be solved. Traditional energy-converting structures such as the cantilever-beam type or spring-mass type have the problem of high working frequency. In this work, an eccentric pendulum-based electromagnetic vibration energy harvester is designed, analyzed, and verified with the finite element analysis method. The pendulum that contains alternative distributed magnets in the outer side works as a rotor and has the advantages of a simple structure and low center frequency. The structure size is well scalable, and the optimal output performance can be obtained by optimizing the coil thickness and width for a given diameter of the energy harvester. The simulation results show that the energy harvester could work in ultra-low frequencies of 0.2–3.0 Hz. A full-scale prototype of the energy harvester is manufactured and tested. The center working frequency is 2.0 Hz with an average output power of 8.37 mW, which has potential for application in driving low-power wireless sensor nodes.
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spelling pubmed-76963012020-11-29 Ultra-Low Frequency Eccentric Pendulum-Based Electromagnetic Vibrational Energy Harvester Li, Mingxue Deng, Huichao Zhang, Yufeng Li, Kexin Huang, Shijie Liu, Xiaowei Micromachines (Basel) Article With the development of low-power technology in electronic devices, the wireless sensor network shows great potential in applications in health tracing and ocean monitoring. These scenarios usually contain abundant low-frequency vibration energy, which can be collected through appropriate energy conversion architecture; thus, the common issue of limited battery life in wireless sensor devices could be solved. Traditional energy-converting structures such as the cantilever-beam type or spring-mass type have the problem of high working frequency. In this work, an eccentric pendulum-based electromagnetic vibration energy harvester is designed, analyzed, and verified with the finite element analysis method. The pendulum that contains alternative distributed magnets in the outer side works as a rotor and has the advantages of a simple structure and low center frequency. The structure size is well scalable, and the optimal output performance can be obtained by optimizing the coil thickness and width for a given diameter of the energy harvester. The simulation results show that the energy harvester could work in ultra-low frequencies of 0.2–3.0 Hz. A full-scale prototype of the energy harvester is manufactured and tested. The center working frequency is 2.0 Hz with an average output power of 8.37 mW, which has potential for application in driving low-power wireless sensor nodes. MDPI 2020-11-16 /pmc/articles/PMC7696301/ /pubmed/33207547 http://dx.doi.org/10.3390/mi11111009 Text en © 2020 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
Li, Mingxue
Deng, Huichao
Zhang, Yufeng
Li, Kexin
Huang, Shijie
Liu, Xiaowei
Ultra-Low Frequency Eccentric Pendulum-Based Electromagnetic Vibrational Energy Harvester
title Ultra-Low Frequency Eccentric Pendulum-Based Electromagnetic Vibrational Energy Harvester
title_full Ultra-Low Frequency Eccentric Pendulum-Based Electromagnetic Vibrational Energy Harvester
title_fullStr Ultra-Low Frequency Eccentric Pendulum-Based Electromagnetic Vibrational Energy Harvester
title_full_unstemmed Ultra-Low Frequency Eccentric Pendulum-Based Electromagnetic Vibrational Energy Harvester
title_short Ultra-Low Frequency Eccentric Pendulum-Based Electromagnetic Vibrational Energy Harvester
title_sort ultra-low frequency eccentric pendulum-based electromagnetic vibrational energy harvester
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7696301/
https://www.ncbi.nlm.nih.gov/pubmed/33207547
http://dx.doi.org/10.3390/mi11111009
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