Note: High-efficiency broadband acoustic energy harvesting using Helmholtz resonator and dual piezoelectric cantilever beams

2014 ◽  
Vol 85 (6) ◽  
pp. 066103 ◽  
Author(s):  
Aichao Yang ◽  
Ping Li ◽  
Yumei Wen ◽  
Caijiang Lu ◽  
Xiao Peng ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
High Efficiency ◽  
Helmholtz Resonator ◽  
Acoustic Energy ◽  
Cantilever Beams ◽  
Piezoelectric Cantilever ◽  
Acoustic Energy Harvesting

scholarly journals The effect of type of sound damper material in the Helmholtz resonator to the output power spectrum of acoustic energy Harvester

2019 ◽  
Vol 3 (2) ◽  
pp. 50
Author(s):  
Hedwigis Harindra ◽  
Agung Bambang Setio Utomo ◽  
Ikhsan Setiawan
Keyword(s):  
Energy Harvesting ◽  
Power Spectrum ◽  
Electric Power ◽  
Energy Harvester ◽  
Helmholtz Resonator ◽  
Acoustic Energy ◽  
Acoustic Energy Harvesting ◽  
Wasted Energy ◽  
Second Peak ◽  
Output Electric Power

<span>Acoustic energy harvesting is one o</span><span lang="EN-US">f</span><span> many ways to harness </span><span lang="EN-US">acoustic </span><span>noises as wasted energy into use</span><span lang="EN-US">f</span><span>ul </span><span lang="EN-US">electical </span><span>energy using an acoustic </span><span>energy harvester. </span><span>Acoustic </span><span>energy harvester t</span><span lang="EN-US">h</span><span>at tested by Dimastya (2018) </span><span lang="EN-US">which is consisted of loudspeake</span><span>r </span><span lang="EN-US">and Helmholtz resonator, </span><span>produced two-peak spectrum. It is </span><span lang="EN-US">suspected</span><span> that the </span><span lang="EN-US">f</span><span>irst peak </span><span lang="EN-US">is due t</span><span>o </span><span lang="EN-US">Helmholtz</span><span> resonator resonance and the second peak </span><span lang="EN-US">comes</span><span lang="EN-US">from the resonance of the conversion </span><span>loudspeaker. </span><span lang="EN-US">This research is to experimentally confirm the guess of the origin of the first peak. The experiments are performed by adding silencer materials on the resonator inner wall which are expected to be able to reduce the height of first peak and to know </span><span>how </span><span lang="EN-US">they</span><span> a</span><span lang="EN-US">ff</span><span>ect t</span><span>he output electric power spectrum o</span><span lang="EN-US">f</span><span> t</span><span>he acoustic energy harvester. </span><span lang="EN-US">Three different silencer materials are used, those are</span><span> glasswool, acoustic </span><span lang="EN-US">f</span><span>oam, and styro</span><span lang="EN-US">f</span><span>oam</span><span lang="EN-US">,</span><span> with</span><span lang="EN-US"> the same thickness of</span><span> 12 cm. </span><span lang="EN-US">The r</span><span>esult</span><span lang="EN-US">s</span><span> show that glasswool absorb</span><span lang="EN-US">s</span><span> sound more e</span><span lang="EN-US">ff</span><span>ectively than acostic </span><span lang="EN-US">f</span><span>oam and styro</span><span lang="EN-US">f</span><span>oam. The use o</span><span lang="EN-US">f</span><span> glasswool, acoustic </span><span lang="EN-US">f</span><span>oam, and styro</span><span lang="EN-US">f</span><span>oam with 12 cm thickness lowered the </span><span lang="EN-US">f</span><span>irst peak </span><span lang="EN-US">by</span><span> 90% (</span><span lang="EN-US">f</span><span>rom 39 mW to 0,5 mW), 82% (</span><span lang="EN-US">f</span><span>rom 39 mW to 0,7 mW), and 82% (</span><span lang="EN-US">f</span><span>rom 39 mW to 0,7 mW), respectively. </span><span lang="EN-US">Based on these results, it is concluded that the guess of the origin of the first peak is confirmed.</span>

Acoustic energy harvesting using an electromechancal Helmholtz resonator.

2009 ◽  
Vol 125 (4) ◽  
pp. 2596-2596 ◽  
Author(s):  
Fei Liu ◽  
Alex Phipps ◽  
Stephen Horowitz ◽  
Louis Cattafesta ◽  
Toshikazu Nishida ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Helmholtz Resonator ◽  
Acoustic Energy ◽  
Acoustic Energy Harvesting

Enhanced Acoustic Energy Harvesting Using Coupled Resonance Structure of Sonic Crystal and Helmholtz Resonator

2013 ◽  
Vol 6 (12) ◽  
pp. 127101 ◽  
Author(s):  
Aichao Yang ◽  
Ping Li ◽  
Yumei Wen ◽  
Caijiang Lu ◽  
Xiao Peng ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Helmholtz Resonator ◽  
Acoustic Energy ◽  
Resonance Structure ◽  
Sonic Crystal ◽  
Acoustic Energy Harvesting

scholarly journals A High-Performance Coniform Helmholtz Resonator-Based Triboelectric Nanogenerator for Acoustic Energy Harvesting

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3431
Author(s):  
Haichao Yuan ◽  
Hongyong Yu ◽  
Xiangyu Liu ◽  
Hongfa Zhao ◽  
Yiping Zhang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Internet Of Things ◽  
High Performance ◽  
Helmholtz Resonator ◽  
Acoustic Energy ◽  
The Internet ◽  
Triboelectric Nanogenerator ◽  
Sensor Devices ◽  
Acoustic Energy Harvesting ◽  
The Internet Of Things

Harvesting acoustic energy in the environment and converting it into electricity can provide essential ideas for self-powering the widely distributed sensor devices in the age of the Internet of Things. In this study, we propose a low-cost, easily fabricated and high-performance coniform Helmholtz resonator-based Triboelectric Nanogenerator (CHR-TENG) with the purpose of acoustic energy harvesting. Output performances of the CHR-TENG with varied geometrical sizes were systematically investigated under different acoustic energy conditions. Remarkably, the CHR-TENG could achieve a 58.2% higher power density per unit of sound pressure of acoustic energy harvesting compared with the ever-reported best result. In addition, the reported CHR-TENG was demonstrated by charging a 1000 μF capacitor up to 3 V in 165 s, powering a sensor for continuous temperature and humidity monitoring and lighting up as many as five 0.5 W commercial LED bulbs for acoustic energy harvesting. With a collection features of high output performance, lightweight, wide frequency response band and environmental friendliness, the cleverly designed CHR-TENG represents a practicable acoustic energy harvesting approach for powering sensor devices in the age of the Internet of Things.

Recent acoustic energy harvesting methods and mechanisms: A review

2021 ◽  
pp. 095745652110307
Author(s):  
Avadhut T Patil ◽  
Maruti B Mandale
Keyword(s):  
Energy Harvesting ◽  
Energy Conversion ◽  
Piezoelectric Element ◽  
Helmholtz Resonator ◽  
Electrical Energy ◽  
Research Field ◽  
Acoustic Energy ◽  
Compact Structure ◽  
Acoustic Metamaterial ◽  
Acoustic Energy Harvesting

This review article summarises the mechanism of the acoustic energy harvester or converter which includes the compact structure of the piezoelectric element, electromagnetic transducer and Helmholtz resonator; different shapes of Helmholtz resonators, piezoelectric cantilever, acoustic metamaterial-based approach, electrostatic transduction method, auxetic structure of material and other techniques. The recently established methods of acoustic energy harvesting and converting mechanisms; devices are carefully reviewed, and their results are compared and listed in the table. The technique of energy conversion by using acoustic metamaterial will tend to be more efficacious due to its complexity and the structure. Even in the few noise attenuation applications, more metamaterial is used, where, with the help of the conversion mechanism, the noise or sound energy can be converted into electrical energy for small electronic applications. It is demonstrated that the acoustic energy-conversion technique will become an essential part of the environmental energy harvesting research field.

Acoustic energy harvesting using an electromechanical Helmholtz resonator

2008 ◽  
Vol 123 (4) ◽  
pp. 1983-1990 ◽  
Author(s):  
Fei Liu ◽  
Alex Phipps ◽  
Stephen Horowitz ◽  
Khai Ngo ◽  
Louis Cattafesta ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Helmholtz Resonator ◽  
Acoustic Energy ◽  
Acoustic Energy Harvesting
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