用于收集行人行走能量的压电电磁复合能量收集器

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Physica Status Solidi A-applications and Materials Science Pub Date : 2024-08-28 DOI:10.1002/pssa.202400311

Linqiang Feng, Chensheng Wang, Jingwei Yang, Zhenheng Li, Jing Li, Lipeng He

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引用次数: 0

摘要

设计了一种压电电磁复合能量收集器（PECEH），主要研究压电悬臂梁的长度和角度与其发电性能之间的关系，以及磁悬浮系统中的动态模型分析和磁体大小对发电性能的影响。在该装置中，压电能量收集器（PEH）和电磁收集器（EMH）分别用作动力和传感。压电能量收集器通过收集振动来发电，并向电磁收集器提供能量，然后由电磁收集器传输无线信号。EMH 采用灵敏度更高的磁悬浮装置，而 PEH 则使用直接接触式击打压电板来增加发电量。桨叶由柔性材料制成，提高了设备的耐用性。原型在不同的激励频率下进行了测试。研究表明，在频率为 1.4 Hz 时，最佳电压和功率分别为 126.28、4.04 V、4.9 mW 和 0.57 μW。行人行走时，60 个发光二极管可以点亮。因此，PECEH 可用于收集行人行走时的振动能量，为传感器和微结构供电。

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A Piezoelectric Electromagnetic Composite Energy Harvester for Collecting Pedestrian Walking Energy

A piezoelectric‐electromagnetic composite energy harvester (PECEH) has been designed, to mainly study the relationship between the length and angle of piezoelectric cantilever beams and their power generation performance, and the analysis of dynamic models in magnetic levitation systems and the impact of magnet size on power generation performance. In this device, piezoelectric energy harvester (PEH) and electromagnetic harvester (EMH) are used as powered and sensing, respectively. The PEH collects vibration to generate electricity and supplies energy to the EMH, which then transmits the wireless signal. EMH adopts a magnetic levitation device with higher sensitivity, while PEH uses a direct contact strike piezoelectric plate to increase power generation. The paddles are made of flexible materials, which increase the durability of the device. The prototype was tested at different excitation frequencies. Research has shown that at a frequency of 1.4 Hz, the optimal voltage and power are 126.28, 4.04 V, and 4.9 mW and 0.57 μW. 60 light emitting diode can be lit when pedestrians are walking. Therefore, PECEH can be used to collect the vibration energy of pedestrians while walking, providing power to sensors and microstructure.

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来源期刊

Physica Status Solidi A-applications and Materials Science 工程技术-材料科学：综合

CiteScore

3.70

自引率

5.00%

发文量

393

审稿时长

2 months

期刊介绍： The physica status solidi (pss) journal group is devoted to the thorough peer review and the rapid publication of new and important results in all fields of solid state and materials physics, from basic science to applications and devices. Among the largest and most established international publications, the pss journals publish reviews, letters and original articles, as regular content as well as in special issues and topical sections.