Page 150 - 《应用声学》2021年第5期

第 40 卷 第 5 期 Vol. 40, No. 5
2021 年 9 月 Journal of Applied Acoustics September, 2021

⋄ 研究报告 ⋄

亥姆霍兹效应和文丘里效应复合型换能器设计 ∗

叶俊杰 1 吕海峰 1† 马智宇 1 张文辉 1 余瀚海 2

(1 中北大学机械工程学院 太原 030051)
(2 北京市地铁运营有限公司运营一分公司 北京 100044)

摘要：为合理地从环境中获取能量为无线传感网络和微电子低功耗设备提供能量，该文提出了一种亥姆霍兹
效应和文丘里效应复合型的换能器结构，收集环境中的能量转换为电能。该装置主要由文丘里管和亥姆霍兹
共振器组成。声 -结构 -电多域耦合仿真，结果表明：换能器传递损失峰值以及电能最大值均发生在 245 Hz 处，
系统共振时，能量转换效率最高。设计了整流桥调理电路与超级电容储能电路，开展了换能器的驱动能力测
试，结果表明：换能器所产生的最高电压出现在结构的固有频率 245 Hz 处，计算得到功率为 128.79 µW，实验
与理论计算偏差为 3.36%；换能器单元在空气压缩机气压为 2 kPa 的气流作用下可产生 0.1148 V 电压。
关键词：文丘里管；亥姆霍兹共振器；换能器；气流发电
中图法分类号: TB535+.3; TM619 文献标识码: A 文章编号: 1000-310X(2021)05-0794-07
DOI: 10.11684/j.issn.1000-310X.2021.05.019

Helmholtz effect and Venturi effect compound transducer design

YE Junjie 1 LYU Haifeng 1 MA Zhiyu 1 ZHANG Wenhui 1 YU Hanhai 2

(1 School of Mechanical Engineering, North University of China, Taiyuan 030051, China)
(2 Beijing Subway Operation Co., Ltd., Operation No.1 Branch, Beijing 100044, China)

Abstract: In order to reasonably obtain energy from the environment to provide energy for wireless sensor
networks and microelectronic low-power devices, this paper proposes a Hemholtz effect and Venturi effect
composite transducer structure, which collects the energy in the environment and converts it into electrical
energy. The device is mainly composed of a Venturi tube and a Helmholtz resonator. Acoustic-structure-
electric multi-domain coupling simulation results show that the peak value of transducer transmission loss and
the maximum value of electric energy both occur at 245 Hz, and the energy conversion efficiency is the highest
when the system is in resonance. The rectifier bridge conditioning circuit and the super capacitor energy storage
circuit are designed, and the drive capability test of the transducer is carried out. The results show that the
highest voltage generated by the transducer appears at the natural frequency of the structure at 245 Hz, and
the calculated power is 128.79 µW. The deviation between the experimental and theoretical calculations is
3.36%; the transducer unit can generate a voltage of 0.1148 V under the action of the air compressor with a
pressure of 2 kPa.
Keywords: Venturi tube; Helmholtz resonator; Transducer; Airflow power generation

2021-03-26 收稿; 2021-05-31 定稿
国家自然科学基金 (51305409), 山西省应用基础研究项目 (201701D221124), 山西省重点研发计划项目 (201903D221025)
∗
作者简介: 叶俊杰 (1996– ), 男, 山西大同人, 硕士研究生, 研究方向: 噪声与振动控制。
† 通信作者 E-mail: lvhaifeng@nuc.edu.cn