声能量收集器的研究综述

A Review of Research on the Acoustic Energy Harvester

声能是环境中普遍存在的一种能量形式,如何收集并应用这一能量成为当下研究热点。介绍了亥姆霍兹谐振腔、声晶体谐振腔、四分之一波长谐振腔以及其他非腔体结构声能收集系统的结构及其优化方案。实验结果表明,与亥姆霍兹谐振腔相比,使用同等尺寸的声晶体谐振腔能获得更高的能量收集效率,而四分之一波长谐振腔能以更小的体积收集同样的声能。另外,结构优化和耦合设计可以极大地提升能量收集效率。许多非腔体结构的设计也有着不错的应用前景。

Acoustic energy is ubiquitous as a form of energy in the environment.How to collect and apply acoustic energy has become a current research hot issue.The system structure and related optimization schemes of Helmholtz resonator,acoustic crystal resonator,quarter-wave resonator and other non-cavity structure acoustic energy harvester were introduced.The experimental results showed that higher energy harvesting efficiency could be achieved by the use of acoustic crystal resonators rather than Helmholtz resonators with the same size.Compared with the Helmholtz resonator,the advantage of a quarter-wave resonator was that it could collect the same sound energy in a smaller volume.The efficiency of energy harvesting had also been improved by the structural optimization and coupling design.In addition,many non-cavity structures had also a good application prospect.