一种可集成电磁式声能发电装置的设计
姚丽¹，许宽²，张琳邡¹，刘丰榕¹
（1.中国矿业大学徐海学院，江苏 徐州 221008；2.徐州新盛绿源循环经济产业投资发展有限公司，江苏 徐州 221000）
摘要： 为采用声电转换技术对环境噪声进行收集并加以利用，设计一种可集成电磁式声能发电装置。声能发电装置由
声波导管、亥姆霍兹共振器和电磁换能器组成，声压在亥姆霍兹共振器中被放大，驱动换能器振膜振动，带动线圈做切
割磁感线运动，实现声能要机械能要电能的转换。利用MATLAB软件对声电转换单元和声能发电装置的频响特性进行了
分析，模拟结果表明装置具有明显的窄带特性，并且入射声压级和负载电阻对装置的输出特性有一定的影响。实验结果
表明当入射声压级为120 dB，负载电阻为8 Ω时，入射声波频率在装置共振频率350 Hz 处，输出电功率峰值可以达到
2.47 mW，平均功率密度为4.99 μW/cm³。
关键词： 噪声；声电转换；集成；电磁感应
中图分类号： TM619；TB535      文献标志码： A      文章编号： 2095-0802-(2023)06-0001-07
Design of Integrated Electromagnetic Acoustic Power Generation Device
YAO Li¹, XU Kuan², ZHANG Linfang¹, LIU Fengrong¹
(1. Xuhai College, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China; 2. Xuzhou Xinsheng Lvyuan
Circular Economy Industry Investment Development Co., Ltd., Xuzhou 221000, Jiangsu, China)
Abstract: In order to collect and utilize environmental noise by using acoustic-electric conversion technology, an integrated
electromagnetic acoustic power generation device was designed. The acoustic power generation device is composed of acoustic
duct, Helmholtz resonator and electromagnetic transducer. The sound pressure is amplified in the Helmholtz resonator to drive the
vibration of the transducer diaphragm, drive the coil to cut the magnetic induction line, and realize the conversion of acoustic
energy, mechanical energy and electrical energy. MATLAB software was used to analyze the frequency response characteristics of
the acoustoelectric conversion unit and the acoustoelectric power generation device. The simulation results show that the device
has obvious narrowband characteristics, and the incident sound pressure and load resistance has a certain impact on the output
characteristics of the device. The experimental results show that when the incident sound pressure is 120 dB and the load
resistance is 8 Ω, the incident sound frequency is at the resonance frequency of 350 Hz, the peak output power can reach 2.47 mW,
and the average power density is 4.99 μW/cm³.

Key words: noise; acoustic-electric conversion; integration; electromagnetic induction