基于微液滴介质和差分电容器的静电式微型振动发电机

温中泉; 何渝; 王晓兰

doi:10.3788/OPE.20122005.1009

您当前的位置：

首页 >

文章列表页 >

基于微液滴介质和差分电容器的静电式微型振动发电机

微纳技术与精密机械 | 更新时间：2020-08-12

- 基于微液滴介质和差分电容器的静电式微型振动发电机
- Micro electrostatic seismic power generator based on droplet and differential capacitors
- 光学精密工程 2012年20卷第5期页码：1009-1014
- 作者机构：
  
  1. 重庆大学新型微纳器件与系统技术国家级重点学科实验室,重庆 400044
  2. 重庆大学微系统研究中心,重庆 400044
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No.60706032)()
- DOI：10.3788/OPE.20122005.1009
  中图分类号： TM387
- 收稿日期：2011-12-08，
  
  修回日期：2012-02-14，
  
  网络出版日期：2012-05-10，
  
  纸质出版日期：2012-05-10
- 稿件说明：
移动端阅览
温中泉, 何渝, 王晓兰. 基于微液滴介质和差分电容器的静电式微型振动发电机[J]. 光学精密工程, 2012,20(5): 1009-1014

WEN Zhong-quan, HE Yu, WANG Xiao-lan. Micro electrostatic seismic power generator based on droplet and differential capacitors[J]. Editorial Office of Optics and Precision Engineering, 2012,20(5): 1009-1014
温中泉, 何渝, 王晓兰. 基于微液滴介质和差分电容器的静电式微型振动发电机[J]. 光学精密工程, 2012,20(5): 1009-1014 DOI： 10.3788/OPE.20122005.1009.

WEN Zhong-quan, HE Yu, WANG Xiao-lan. Micro electrostatic seismic power generator based on droplet and differential capacitors[J]. Editorial Office of Optics and Precision Engineering, 2012,20(5): 1009-1014 DOI： 10.3788/OPE.20122005.1009.

摘要

针对现有悬臂梁式微型振动发电机存在低频响应不敏感

抗冲击能力差等问题

提出了一种利用微液滴介质拾振实现差分电容器变化及电荷转移的静电式微型振动发电机新结构。根据驻极体模型

推导出了差分电容器极板的电荷分布公式;结合微液滴作受迫正弦振动假设

建立了静电式微型振动发电机的数学模型。采用COMSOL Multiphysics软件对微液滴运动及电容器极板电荷分布进行了仿真

得到了发电机的输出电压幅频特性。制作出了以汞为介质的静电式微型振动发电机样机

进行了样机的性能测试。实验结果表明:该静电式微型振动发电机共振频率为3 Hz

在加速度为3

、振动激励频率为3 Hz

负载为1 M时

测得样机输出电压峰-峰值为1.21 V

输出功率为0.73 W

实现了环境中低频振动能量的获取与转换。

Abstract

A micro electrostatic seismic power generator based on a droplet was proposed for harvesting the seismic energy in low frequency to improve its low frequency response and impact resistance abilities. The generator structure was based on the charge transfer between the differential capacitors inducted by the movement of the micro droplet in the electric field of an electret. According to the electret model

the charge distribution on the differential capacitors was derived. Combined with the assumption of forced sinusoidal vibration of the micro droplet

a mathematic model of the micro power generator was established. The COMSOL Multiphysics was employed to simulate the micro droplet movement and charge distribution

then the voltage-frequency characteristics were obtained. A prototype of the electret and micro-droplet-based micro seismic power generator was developed and tested. Its resonant-frequency is 3 Hz

the output power is about 0.73 W on 1 M resistance when the vibration acceleration is 3 g under a resonant frequency. It can scavenge the energies from low-frequency external vibrations.

关键词

Keywords

references

MARCIN M, YASSER A, SKANDAR B. Integrated power harvesting system including a MEMS generator and a power management circuit . Solid-State Sensors, Actuators and Microsystems Conference, 2007, 10-14: 887-890.[2] IBRAHIM S, TUNA B, HALUK K. An electromagnetic micro energy harvester based on an array of parylene cantilevers[J]. Journal of Micromechanics and Microengineering, 2009, 19(10): 41.[3] STEPHEN P B, TERENCE O. Electromagnetic Energy Harvesting[M]. Springer US, 2009: 129-161.[4] DIBIN Z, STEPHEN R, MICHAEL J T, et al.. Design and experimental characterization of a tunable vibration-based electromagnetic micro-generator[J]. Sensors and Actuators A: Physical, 2010(158): 284-293.[5] MARIOS S, CHARLENE N, RUSSEL T et al.. Screen-printed piezoelectric generator for helicopter health and usage monitoring systems . Proceedings Power MEMS, 2008: 201-204.[6] 贺学锋,杜志刚,赵兴强,等. 悬臂梁式压电振动能采集器的建模及实验验证 [J]. Opt. Precision Eng.,2011,19(8):1771-1778. HE X F,DU ZH G,ZHAO X Q, et al.. Modeling and experiment verification for cantilevered piezoelectric vibration energy harvester [J].Opt. Precision Eng.,2011,19(8):1771-1778.(in Chinese)[7] SHAD R, PAUL K W. Micro-electrostatic vibration-to-electricity convertors . ASME International Mechanical Engineering Congress & Exposition, 2002: 1-10.[8] TAKASHI G, SHUJI T, MASAYOSHI E. High power electrostatic motor and generator using electrets . The 12th International Conference on Solid State Sensors, Actuators and Microaystems, Boston, 2003: 492-496.[9] TAKUMI T, YJUI S, NOBUHIDE K, et al.. High-performance polymer electret for micro seismic generator . PowerMEMS2005, 2005(11): 28-30.[10] MASATO E, YUJI S, NOBUHIDE K, et al.. Electret-based energy harvesting device with parylene flexible springs .The 4th Asia Pacific Conference on Transducers and Micro/Nano Technologies (APCOT) 2008: 2B3-1.[11] NARUSE Y, MATSUBARA N, MABUCHI K, et al.. Electrostatic micro power generation from low-frequency vibration such as human motion[J]. Journal of Micromechanics and Microengineering, 2009, 19(9): 1-5.

浏览量

627

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

暂无数据