一种基于防震锤的新型压电复合能量收集方法  

A Novel Piezoelectric Hybrid Energy Harvesting Method Based on Shockproof Hammer

作　　者：张佳佳[1,2] 袁强静 严冬 李雪锋[1] 张金雨 刘涛 豆涵杰 牟笑静 ZHANG Jiajia;YUAN Qiangjing;YAN Dong;LI Xuefeng;ZHANG Jinyu;LIU Tao;DOU Hanjie;MU Xiaojing(Key Laboratory of Industrial Internet of Things and Networked Control of Ministry of Education,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;College of Optoelectronic Engineering,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆邮电大学工业物联网与网络化控制教育部重点实验室,重庆400065 [2]重庆大学光电工程学院,重庆400044

出　　处：《压电与声光》2023年第1期56-60,65,共6页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金面上项目(52075061)。

摘　　要：为了解决智能电网环境下输电线有害振动与工况检测传感器的供电及续航问题,该文设计了一种压电式振动与磁场复合能量收集的防震锤。防震锤的主压电梁收集输电线振动能量,副压电梁通过安装磁铁收集输电线电流产生的变化磁场能量,摆脱了传统收集磁场能量时线圈的使用。对收集器进行有限元仿真分析与实验测试。结果表明,收集器工作频带更宽,比传统的单梁输出高54%,主压电悬臂梁最大输出功率可达到874μW,副压电梁最大功率可达到683μW。A piezoelectric vibration and magnetic field hybrid energy harvesting shockproof hammer was designed to solve the problem of harmful vibration and power supply and endurance of sensors in the smart grid environment.The main piezoelectric beam of the shockproof hammer harvests the vibration energy of the transmission line,and the secondary piezoelectric beam harvests the changing magnetic field energy generated by the current via the magnet installation,avoiding the need for the coil in standard magnetic field energy harvesting.The finite element simulation analysis and experiment test on the harvester are carried out.The results show that the harvester operates in a wider frequency band,which is 54%higher than that of the output of the traditional single beam.The maximum output power of the main piezoelectric cantilever beam can reach 874μW,and the maximum power of the secondary piezoelectric beam can reach 683μW.

关 键 词：智能电网 悬臂梁 压电效应 振动能量收集 电磁能量收集 宽频带 

分 类 号：TN384[电子电信—物理电子学]