학술논문
A high-efficient broadband energy harvester based on non-contact coupling technique for ambient vibrations
Document Type
Conference
Author
Source
2015 28th IEEE International Conference on Micro Electro Mechanical Systems (MEMS) Micro Electro Mechanical Systems (MEMS), 2015 28th IEEE International Conference on. :1110-1113 Jan, 2015
Subject
Language
ISSN
1084-6999
Abstract
In this paper, a high-efficient piezoelectric energy harvester based on non-contact coupling technique is proposed and characterized, which allows it, for the first time, to take advantage of multi-cantilevers and frequency up-conversion technique to enhance the power generation efficiency for ambient excitation. The unique energy harvester can effectively scavenge environmental vibration energy with a wide bandwidth. Aiming for high space efficiency and less installation constrains, folded cantilevers are designed for this energy harvester. With a load resistance of 50 kΩ, a maximum output power of 18.45 µW is achieved with the fabricated energy harvester, which is a suitable power supply for the sensor nodes in WSN applications.