A Self-Supplied Inertial Piezoelectric Energy Harvester with Power-Management IC

📋 论文概要

该论文提出了一种自供电的惯性压电能量收集器，集成了电源管理IC，旨在从环境振动中高效收集能量，为无线传感器节点提供自主供电。解决了传统能量收集器效率低、需要外部电源的问题。

💡 主要创新点

• 提出了一种自供电的压电MEMS能量收集器，无需外部电源即可启动和运行。
• 集成了高效的电源管理IC，包括整流和电压调节，实现了从振动到稳定直流输出的完整能量转换。
• 通过优化机械结构和电路设计，提高了在低频振动环境下的能量收集效率。

🏷 关键词

📄 原文摘要

Harvesting energy from ambient vibrations is a promising technology for fully autonomous wireless sensor nodes, which can give birth to new applications in biomedical, industrial, and environmental monitoring. There have been independent solutions in increasing the harvesting efficiency either on the mechanical harvester [1] or on its power management circuitry [2,3]. Recently, a piezoelectric MEMS harvester using AlN was demonstrated to generate enough energy to autonomously power a wireless temperature sensor with a full-bridge rectifier built with off-the-shelf components [1]. Meanwhile, AC-DC converters for piezoelectric harvesters have been designed to enable efficient power extraction

👥 作者与机构

Ethem Erkan Aktakka, Rebecca L. Peterson, Khalil Najafi

University of Michigan, Ann Arbor, MI