摘要
针对传统化学电池需定期更换并进行周期性充电、在户外环境无法长期稳定供电的问题,设计了一种悬浮式电磁振动能量采集器。基于电磁感应原理对能量采集器进行了理论分析,制作了三轴电磁式振动能量采集器,分别在X、Y、Z三个方向布置振动能量采集器单体,设计了能量转换电路,将收集到的电能转变为3.3 V直流电。开展了台架测试和应用场景测试,结果表明,振动能量采集器单体在振动幅度为10 mm、振动频率为9 Hz时输出性能最高,最大输出功率为43.11 mW。探究了振动能量采集器单体在不同振动幅度和振动频率下的直流输出性能,在振动幅度大于10 mm、振动频率为4~8 Hz时可为LIS3DH加速度传感器稳定供电。通过沿X、Y、Z轴布置的振动能量采集器单体阵列,使振动能量采集器具备全方向收集振动能量的能力,大大提高了收集振动能量的效率与适应性。该采集器可应用于诸如机器振动、波浪、人体运动等多种场景的振动能量收集,实现为无线传感网络节点等低功耗用电器供能,具有一定应用价值,可为研究低功耗电子元器件的自供电技术提供参考。
Aiming at the problems that the traditional chemical battery needs regular replacement and periodic charging,and cannot supply stable power for a long time in the outdoor environment,a kind of suspended electromagnetic vibration energy harvester was designed.The theoretical analysis of the energy harvester was carried out based on the electromagnetic induction principle,and the three-axis electromagnetic vibration energy harvester was made.The single vibration energy harvesters were arranged in the X,Y and Z directions respectively,and the energy conversion circuit was designed to convert the collected electric energy into DC 3.3 V.The bench test and application scenario test were carried out.The results show that when the vibration amplitude of the single vibration energy harvester is 10 mm and the vibration frequency is 9 Hz,the output performance is the highest,and the maximum output power is 43.11 mW.The DC output performances of the single vibration energy harvester under different vibration amplitudes and vibration frequencies were explored.When the vibration amplitude is greater than 10 mm and the vibration frequency is 4-8 Hz,the harvester can supply stable power to the LIS3DH acceleration sensor.Through array of the single vibration energy harvesters arranged along the X,Y and Z axes,the vibration energy harvester has the ability to collect vibration energy in all directions,greatly improving the efficiency and adaptability of vibration energy collection.It can be applied to collect vibration energy in various scenarios such as machine vibration,water wave and human movement,and realize the power supply for low-power electrical appliances such as wireless sensor network nodes and so on.It has certain application value and can provide a reference for the research of self-powered technology of low-power electronic components.
作者
王康达
任慧敏
李振明
路永玲
何志祝
李臻
Wang Kangda;Ren Huimin;Li Zhenming;Lu Yongling;He Zhizhu;Li Zhen(College of Engineering,China Agricultural University,Beijing 100083,China;China Electric Power Research Institute,Beijing 100192,China;Electric Power Science Research Institute,State Grid Jiangsu Electric Power Co.,Ltd.,Nanjing 211103,China)
出处
《微纳电子技术》
CAS
北大核心
2023年第3期413-421,共9页
Micronanoelectronic Technology
基金
国家电网有限公司科技项目(5700-202255213A-1-1-ZN)。
关键词
振动能量采集器
自供电技术
电磁感应
能量转换电路
低频振动
vibration energy harvester
self-powered technology
electromagnetic induction
energy conversion circuit
low frequency vibration
