摘要
基于电磁感应和亥姆霍兹共振原理设计一种电磁声能收集器,通过声-力-电转换的理论研究和实验测试证明装置能够有效地将声能转换为电能。声能收集器由亥姆霍兹共振器和电磁换能器耦合而成,当入射声波频率与声能收集器共振频率一致,声压被亥姆霍兹共振器放大,同时声能收集器输出电压也达到最大。模拟和实验结果表明,当声能收集器工作于共振频率时,输出的电压值最大,并且输出电压与输入声压成正比。
An electromagnetic acoustic energy harvester is designed based on the principles of electromagnetic induction and Helmholtz resonance.The theoretical research and experimental tests of acoustic-force-electric conversion proves that the device can effectively convert acoustic energy into electrical energy.The sound energy harvester is composed of a Helmholtz resonator and an electromagnetic transducer.When the frequency of the incident sound wave is consistent with the resonance frequency of the sound energy harvester,the sound pressure is amplified by the Helmholtz resonator.The output voltage also reaches the maximum.The simulation and experimental results show that when the acoustic energy harvester works at the resonant frequency,the output voltage value is the largest,and the output voltage is proportional to the input sound pressure.
作者
姚丽
张琳邡
刘丰榕
YAO Li;ZHANG Linfang;LIU Fengrong(Xuhai College,China University of Mining and Technology,Xuzhou 221008,China)
出处
《电声技术》
2022年第8期106-111,共6页
Audio Engineering
基金
江苏省高等学校自然科学研究面上项目(20KJD560008)
关键词
声-力-电转换
共振
电磁感应
sound-force-electric conversion
resonance
electromagnetic induction
