A Self-powered Sensor of Acoustic Metamaterial and Helmholtz Resonator Structure

MA Kejing; CHEN Huyue; ZHANG Wenming

doi:10.13433/j.cnki.1003-8728.20220235

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A Self-powered Sensor of Acoustic Metamaterial and Helmholtz Resonator Structure

更新时间：2026-07-10

- A Self-powered Sensor of Acoustic Metamaterial and Helmholtz Resonator Structure
- Mechanical Science and Technology for Aerospace Engineering Vol. 43, Issue 1, Pages: 110-116(2024)
- 作者机构：
  
  1. 上海交通大学机械与动力工程学院,上海,200240
  2. 上海交通大学密西根联合学院,上海,200240
- 作者简介：
- 基金信息：
- DOI：10.13433/j.cnki.1003-8728.20220235
  CLC：
- Online First：25 January 2024，
  
  Published：2024
- 稿件说明：
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MA Kejing, CHEN Huyue, ZHANG Wenming. A Self-powered Sensor of Acoustic Metamaterial and Helmholtz Resonator Structure[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(1): 110-116.
DOI：

MA Kejing, CHEN Huyue, ZHANG Wenming. A Self-powered Sensor of Acoustic Metamaterial and Helmholtz Resonator Structure[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(1): 110-116. DOI： 10.13433/j.cnki.1003-8728.20220235.

摘要

随着物联网的发展，自供能声学传感器得到了广泛关注。然而，压电传感器的灵敏度等关键指标难以进一步提升。声学超材料能以传统材料无法实现的方式操控声波，为新型声学传感器的设计提供了新思路。本文设计了一种声学超材料和亥姆霍兹谐振结构的自供能声学传感器，并验证了具有缺陷的声学超材料能够聚焦声能；此外，亥姆霍兹谐振器能将聚焦在声学超材料缺陷处的能量进一步放大，传输比超过40 mV/Pa，能满足小型传感器的自供能需求。实验结果表明: 与仅有局部缺陷的声学超材料传感器相比，基于亥姆霍兹谐振器的声学超材料传感器具有更高的灵敏度和信噪比。

Abstract

With the development of Internet of Things

self-powered acoustic sensors have attracted extensive attention. However

it is difficult to further improve piezoelectric sensors′ sensitivity and other vital indicators. Acoustic metamaterials can manipulate sound waves

while traditional materials cannot

thus providing a new method for designing new acoustic sensors. This paper designs a self-powered sensor of acoustic metamaterial and Helmholtz resonance structure. It also verifies that the defective acoustic metamaterial can focus acoustic energy. In addition

the Helmholtz resonator can further amplify the acoustic energy focused on the defective acoustic metamaterial. Its transmission ratio is more than 40 mV/Pa and meets the demand of a small self-powered sensor. The experimental results show that compared with the acoustic metamaterial sensor

the acoustic metamaterial sensor based on the Helmholtz resonator has higher sensitivity and signal-to-noise ratio.

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