Analysis of Upper Bound Power Output for a Wrist-Worn Rotational Energy Harvester from Real-World Measured Inputs
Analysis of Upper Bound Power Output for a Wrist-Worn Rotational Energy Harvester from Real-World Measured Inputs
复制标题
根据实际测量输入分析腕戴式旋转能量采集器的上限功率输出
DOI：
10.1088/1742-6596/557/1/012090
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
S. Roundy
中科院分区：
文献类型：
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作者：
T. Xue;X. Ma;C. Rahn;S. Roundy
从人体运动中收集能量满足了可穿戴应用中对无电池健康和保健传感器日益增长的需求。由于人体运动的本质，在此类应用中收集能量的主要障碍是频率低且随机。本文提出了一个 3 维广义旋转收割机模型，用于根据现实世界测量数据确定功率输出的上限。仿真结果表明，与现有设备相比，发电量还有很大的改进空间。我们开发了一种用于人体运动的旋转能量采集器，试图缩小理论可能性和演示设备之间的差距。与之前的工作一样，它利用磁拨压电梁。然而，它更充分地利用了可用空间，并且具有许多可用于优化的自由度。最后，我们提出了一种基于耦合收割机模型的原型收割机，并进行了初步实验验证。
Energy harvesting from human motion addresses the growing need for battery-free health and wellness sensors in wearable applications. The major obstacles to harvesting energy in such applications are low and random frequencies due to the nature of human motion. This paper presents a generalized rotational harvester model in 3 dimensions to determine the upper bound of power output from real world measured data. Simulation results indicate much space for improvement on power generation comparing to existing devices. We have developed a rotational energy harvester for human motion that attempts to close the gap between theoretical possibility and demonstrated devices. Like previous work, it makes use of magnetically plucked piezoelectric beams. However, it more fully utilizes the space available and has many degrees of freedom available for optimization. Finally we present a prototype harvester based on the coupled harvester model with preliminary experimental validation.