Piezoelectric multifrequency energy converter for power harvesting in autonomous microsystems
Piezoelectric multifrequency energy converter for power harvesting in autonomous microsystems
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DOI：
10.1016/j.sna.2007.07.004
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发表时间：
2008-03-10
影响因子：
4.6
通讯作者：
Taroni, Andrea
中科院分区：
文献类型：
--
作者：
Ferrari, Marco;Ferrari, Vittorio;Taroni, Andrea
本文介绍了一种用于利用背景振动为自主传感器供电的多频机电压电转换器。该转换器由多个具有不同固有频率的双晶片悬臂梁组成，其整流输出被馈送到单个存储电容器。文中报道了转换器的结构、工作原理描述以及性能测量数据。实验结果表明，该转换器可在宽频带频谱的输入振动下使用，与单个转换器相比，提高了整体能量转换的效率。该转换器被用于为无电池传感器模块供电，该模块间歇性地读取无源传感器的信号，并通过射频传输发送测量信息，从而形成一个具有更高测量和传输速率的自主传感器系统。版权所有©2007爱思唯尔有限公司。保留所有权利。
A multifrequency mechanoelectrical piezoelectric converter intended for powering autonomous sensors from background vibrations is presented. The converter is composed of multiple bimorph cantilevers with different natural frequencies, whose rectified outputs are fed to a single storage capacitor. The structure of the converter, description of the operation, and measurement data on the performances are reported. Experimental results show the possibility of using the converter with input vibrations across a wideband frequency spectrum, improving the effectiveness of the overall energy conversion over the case of a single converter. The converter was used to supply power to a battery-less sensor module that intermittently reads the signal from a passive sensor and sends the measurement information via RF transmission, in this way forming an autonomous sensor system with improved measure-and-transmit rate. (C) 2007 Elsevier B.V. All rights reserved.