A Miniaturization Strategy for Harvesting Vibration Energy Utilizing Helmholtz Resonance and Vortex Shedding Effect

A Miniaturization Strategy for Harvesting Vibration Energy Utilizing Helmholtz Resonance and Vortex Shedding Effect
Title:
A Miniaturization Strategy for Harvesting Vibration Energy Utilizing Helmholtz Resonance and Vortex Shedding Effect
Other Titles:
IEEE Electron Device Letters
Keywords:
Publication Date:
01 February 2014
Citation:
Chengliang Sun; Xiaojing Mu; Li Yan Siow; Wei Mong Tsang; Hongmiao Ji; Hyun Kee Chang; Qingxin Zhang; Yuandong Gu; Dim-Lee Kwong, "A Miniaturization Strategy for Harvesting Vibration Energy Utilizing Helmholtz Resonance and Vortex Shedding Effect," Electron Device Letters, IEEE , vol.35, no.2, pp.271,273, Feb. 2014 doi: 10.1109/LED.2013.2295922. URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6701147&isnumber=6720122
Abstract:
In this letter, we report a miniaturization strategy for harvesting a low-frequency random vibration energy with a piezoelectric energy harvesting (EH) system utilizing coupled Helmholtz resonance and vortex shedding effect. This is made possible by transferring the low-frequency vibration energy into a pressurized fluid, which is in turn converted into predefined, pressure-independent high-frequency energy harvested by the device. The vibration-pressurized fluid conversion extends the device sampling frequency band; enables efficient harvesting of broadband low vibration frequencies with small form factor. Proof of concept of the proposed strategy has been demonstrated with an AlN-based MEMS EH, which delivered an output power density of 95.5 mW/cm3 under a constant input airflow at 4.2 lbf/in2 pressure
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PublisherCopyrights
Funding Info:
Description:
ISSN:
0741-3106
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