基于宽带振动的能量采集,用于使用频率升级转换的无线传感器应用.
Jinglun Li1, Habilou Ouro-Koura1, Hannah Arnow1
1Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA.
Sensors (Basel, Switzerland)
|June 10, 2023
概括
本研究介绍了一种基于冲击的静电振动能量收割器,该收割器使用频率上升转换来提高物联网设备的功率输出. 这种新的设计扩大了操作频率范围,提高了从环境振动中收集能源的效率.
科学领域:
- 收集能源 收集能源
- 微电子机械系统 (MEMS) 是一种微电子机械系统.
- 固态物理 固态物理
背景情况:
- 静电振动能量收割器对于为物联网 (IoT) 设备提供动力是有希望的.
- 传统的收割机与低频环境振动 (1-100 Hz) 斗争,限制了输出功率.
- 输出功率与电容振荡频率直接相关,在环境条件下,这种频率往往太低.
研究的目的:
- 为了解决低功率输出和狭窄的频率带宽在静电收割机.
- 探索基于冲击的静电能量收割机设计,用于频率上升转换.
- 为了增强能量转换周期和环境振动的总体能量输出.
主要方法:
- 使用商业微型制造造工厂工艺制造设备.
- 嵌入不均的横截面电极以防止拉进.
- 添加无弹质量 (碳化物,二氧化,化) 来诱导电极碰撞和频率上升转换.
主要成果:
- 基于撞击的系统证明了在广泛的频率范围内运行,高达700Hz.
- 添加无弹质量显著增加了设备带宽.
- 一个二氧化球在0.5g的峰值加速度下使设备带宽翻了一番.
- 不同的质量特性改变了机械和电气减压,影响了性能.
结论:
- 基于冲击的静电能量采集器具有频率上升转换,为低频振动能量采集提供了可行的解决方案.
- 不均的电极和无弹的质量有效地扩大了运行带宽和增强了发电.
- 对质量属性的进一步研究可以为特定应用优化收割机性能.
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