Vibration Energy Harvester Based on Bilateral Periodic One-Dimensional Acoustic Black Hole

Abstract

An acoustic black hole (ABH) has been applied in the regulation of structural performance to form the aggregation effect of elastic waves in the local area of the structure, which has been used in energy harvesting in recent years. The piezoelectric vibration energy harvester (VEH) integrated with the beam of a bilateral periodic 1D ABH is proposed in this study. The theoretical model of the proposed VEH is established and analyzed based on the transfer matrix method. The performance of the VEHs is numerically simulated by COMSOL Multiphysics. The simulation results show that the performance of the bilateral ABH beam is higher than its traditional counterpart. Finally, the performance of the proposed VEH is validated in an experimental system. The experimental results show that the peak output voltage of the VEH Model 3 can reach 169.16 V, which is 1.9 times that of the traditional one. In the optimal impedance matching, the output power of the third bilateral VEH is 2.7 times that of the traditional ABH, which can reach 91.52 mW.

Monitoring the Air Quality in an HVAC System via an Energy Harvesting Device

“…On this basis, a new trend has emerged in the use of readily available, portable sensors [ 5 ] that operate similarly to traditional battery-operated or wired sensors. In this framework, energy harvesters can provide the necessary power for these air quality monitoring devices, which must run continuously without human intervention [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. This will meet a few goals of the United National 2030 Agenda for Sustainable Development , such as “Goals 7—Ensure access to affordable, reliable, sustainable and modern energy for all”; “Goals 11—Make cities and human settlements inclusive, safe, resilient and sustainable”; and “Goals 12—Ensure sustainable consumption and production patterns” [ 18 ].…”