Gao Shan, Cao Qiang, Zhou Nannan, Ao Hongrui, Jiang Hongyuan
School of Mechatronics Engineering, Harbin Institute of Technology, No. 92 West Dazhi Street, Harbin 150001, China.
Micromachines (Basel). 2022 Jan 30;13(2):232. doi: 10.3390/mi13020232.
With the development of industry IoT, microprocessors and sensors are widely used for autonomously transferring information to cyber-physics systems. Massive quantities and huge power consumption of the devices result in a severe increment of the chemical batteries, which is highly associated with problems, including environmental pollution, waste of human/financial resources, difficulty in replacement, etc. Driven by this issue, mechanical energy harvesting technology has been widely studied in the last few years as a great potential solution for battery substitution. Therefore, the piezoelectric generator is characterized as an efficient transformer from ambient vibration into electricity. In this paper, a spoke-like piezoelectric energy harvester is designed and fabricated with detailed introductions on the structure, materials, and fabrication. Focusing on improving the output efficiency and broadening the pulse width, on the one hand, the energy harvesting circuit is optimized by adding voltage monitoring and regulator modules. On the other hand, magnetic mass is adopted to employ the magnetic field of repulsive and upper repulsion-lower attraction mode. The spoke-like piezoelectric energy harvester suggests broadening the frequency domain and increasing the output performance, which is prepared for wireless sensors and portable electronics in remote areas and harsh environments.
随着工业物联网的发展，微处理器和传感器被广泛用于将信息自动传输到信息物理系统。这些设备的大量使用和高功耗导致化学电池的使用量急剧增加，这与环境污染、人力/财力资源浪费、更换困难等问题密切相关。受此问题驱动，机械能收集技术在过去几年中得到了广泛研究，作为一种极具潜力的电池替代解决方案。因此，压电发电机的特点是能将环境振动高效转化为电能。本文设计并制作了一种轮辐状压电能量收集器，并对其结构、材料和制作过程进行了详细介绍。为了提高输出效率和拓宽脉冲宽度，一方面，通过增加电压监测和调节模块对能量收集电路进行了优化。另一方面，采用磁块利用排斥磁场和上斥下吸模式。这种轮辐状压电能量收集器拓宽了频域并提高了输出性能，可为偏远地区和恶劣环境中的无线传感器和便携式电子设备提供电力。
