Selective Receiver Charging using Acoustic Vibration Modes

被引：2

作者：

Tseng, Victor Farm-Guoo ^{[1
]}

Diamond, Daniel ^{[2
]}

Goodrich, Sarah ^{[2
]}

Radice, Joshua J. ^{[3
]}

Lazarus, Nathan ^{[1
]}

Bedair, Sarah S. ^{[1
]}

机构：

[1] US Army Res Lab, Adelphi, MD 20783 USA

[2] Rochester Inst Technol, Oak Ridge Associated Univ Fellowship Program, Rochester, NY 14623 USA

[3] US Naval Acad, Annapolis, MD 21402 USA

来源：

2021 IEEE WIRELESS POWER TRANSFER CONFERENCE (WPTC) | 2021年

关键词：

Through-metal transfer; acoustic energy transfer; piezoelectric transducers; Lamb waves; vibration modes; POWER;

D O I：

10.1109/WPTC51349.2021.9458021

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Unlike other wireless power transfer methods that use electromagnetic waves, acoustic vibrational waves can be used to transfer power through metal structures without being shielded, which is useful for applications such as pipeline structural health monitoring, wireless sensor networks, and UAV recharging platforms. In this paper, we demonstrate, for the first time, the unique ability of acoustic power transfer to selectively charge receivers attached at different locations on a metal structure by exciting different Lamb wave vibration modes using a transmitter array. Efficiency ratios (efficiency of the targeted receiver divided by the efficiency of the untargeted receiver) as high as 55000 could be achieved, with 33% efficiency achieved at 28 kHz when transferred along a 30 inch steel tube. Finite element modeling was also used to visualize the standing wave vibration modes.

引用

页数：4

共 13 条

[1] Wireless piezoelectric acoustic-electric power feedthru [J].