Characterization of micro-generators embedded in commercial-off-the-shelf watches for wearable energy harvesting
Characterization of micro-generators embedded in commercial-off-the-shelf watches for wearable energy harvesting
复制标题
嵌入商用现成手表中的微型发电机的特性，用于可穿戴能量收集
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
S. Roundy
中科院分区：
文献类型：
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作者：
T. Xue;S. Kakkar;Qianyu Lin;S. Roundy
本文介绍了嵌入在商用现货（COTS）手表的微型发电机的特性的基础上，广义的旋转能量采集器模型，该模型预测的能量产生的上限给定一定的系统约束和特定的输入。我们增加了这个广义模型，以代表实际的微型发电机中使用的精工动能手表与现实的阻尼系数，使我们能够确定优化移动系统输出的上限。我们开发了一个移动的数据记录平台，可以同时捕获6个自由度的惯性数据和微型发电机输出的电压。我们要求6名受试者进行一系列日常活动，将平台戴在身体的不同位置。这一努力不仅作为我们的模型的实验验证，而且还提供了对可穿戴动能收集设备的最新技术水平的深入了解。最后，我们确定了改进发电的机会，并表明我们可以通过减少系统中的机械阻尼来增加功率，这可能需要一种具有较低摩擦的替代机制。
This paper presents the characterization of the micro-generators embedded in Commercial-Off-The-Shelf (COTS) watches based on a generalized rotational energy harvester model which predicts the upper bound on energy generation given certain system constraints and specific inputs. We augment this generalized model to represent the actual micro-generator used in the Seiko Kinetic watch with realistic damping coefficients which allow us to identify optimizations to move the system output towards the upper bound. We have developed a mobile data logging platform which captures 6 DOF inertia data and the voltage output from the micro-generator simultaneously. We have asked 6 subjects to conduct a series of daily activities with the platform worn on different locations of the body. This effort not only serves as the experimental validation of our model but also provides insight into the state of the art in wearable kinetic energy harvesting devices that are commercially available. Finally we identify the opportunity for improvement on energy generation and show that we can increase the power by reducing the mechanical damping in the system, which might require an alternative mechanism with inherent lower friction.