摘要
为了解决微型传感器等低功耗产品稳定持续的供能问题,提出了一种基于涡致振动的小型单自由度T型悬臂梁压电俘能结构。通过流固耦合和压电耦合仿真,对风速、前置阻流体形状和尺寸以及间距直径比等参数与俘能结构输出电压的关系进行了研究,并与风洞实验数据进行了对比。仿真与实验结果表明,T型悬臂梁压电俘能结构产生的电压随风速的增大而增大。当风速为6.5 m·s-1,阻流体为直径0.02 m、高0.05 m的圆柱体,与压电悬臂梁的间距直径比为2时,实验测得俘能结构产生的电压和输出功率最大分别为1.02 V和1.04μW。仿真和实验结果为实际研制风中涡致振动压电能量收集结构提供了重要参考。
In order to solve the problem of stable and continuous energy supply for low-power micro sensors,a T-type piezoelectric cantilever energy harvester based on vortex-induced vibration of small and single freedom was proposed.Through fluid-structure coupling and piezoelectric coupling simulation,the relation between the wind speed,the shape of the bluff body,the size of the bluff body,the ratio of spacing to diameter and the output voltage of T-type piezoelectric cantilever energy harvester was studied and the results were compared with the wind tunnel data.The result shows that the voltage produced by T-type piezoelectric cantilever energy harvester increases with increasing wind speed.When the wind speed is 6.5 m·s-1,the bluff body is the cylinder with a diameter of 0.02 m and a height of 0.05 m and the ratio of spacing to diameter is 2.The maximum voltage and output power of T-type piezoelectric cantilever are 1.02 V and 1.04μW,which provides a reference for the actual development of vortex-induced vibration energy collection structure in wind.
作者
李莉
林杉杉
王军
王永耀
于慧慧
LI Li;LIN Shan-shan;WANG Jun;WANG Yong-yao;YU Hui-hui(College of Computer Science and Technology,Shenyang University of Chemical Technology,Shenyang 110142,China;Key Laboratory of Intelligent Technology for Chemical Process Industry of Liaoning Province,Shenyang 110142,China;Laboratory of Sensor Technology,Beijing Information Science&Technology University,Beijing 100631,China)
出处
《仪表技术与传感器》
CSCD
北大核心
2021年第7期32-37,共6页
Instrument Technique and Sensor
基金
辽宁省自然科学基金指导计划(2019-ZD-0075)
辽宁省教育厅基础研究项目(LJ2020022)
北京信息科技大学北京市传感器重点实验室开放课题(2020CGKF005)。
关键词
涡致振动
压电能量收集
悬臂梁
ADINA
风洞实验
vortex-induced vibration
piezoelectric energy harvesting
cantilever beam
ADIAN
wind tunnel experiment
作者简介
李莉(1978—),副教授,博士,主要从事水下换能器、压电材料和水下无线传感器网络研究。E-mail:lily_jilin@163.com;通信作者:王军(1978—),教授,博士,主要从事无线网络技术、水下传感器,工业物联网感知层技术的研究。
