文章摘要
叶俊杰,吕海峰,马智宇,张文辉.亥姆霍兹效应和文丘里效应复合型换能器设计*[J].,2021,40(5):794-800
亥姆霍兹效应和文丘里效应复合型换能器设计*
Helmholtz effect and Venturi effect compound transducer design
投稿时间:2021-03-26  修订日期:2021-09-03
中文摘要:
      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。
英文摘要:
      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.
DOI:10.11684/j.issn.1000-310X.2021.05.019
中文关键词: 文丘里管  亥姆霍兹共振器  换能器  气流发电
英文关键词: Venturi tube  Helmholtz resonator  Transducer  Airflow power generation
基金项目: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)
作者单位E-mail
叶俊杰 中北大学机械工程学院 山西太原 2284211687@qq.com 
吕海峰 中北大学机械工程学院 山西太原 lvhaifeng@nuc.edu.cn 
马智宇 中北大学机械工程学院  
张文辉 中北大学机械工程学院  
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