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Inductive power transfer for on-body sensors defining a design space for safe, wirelessly powered on-body health sensors

机译:用于身体传感器的电感电力传输,用于保护安全,无线动力的身体健康传感器的设计空间

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Designers of on-body health sensing devices face a difficult choice. They must either minimise the power consumption of devices, which in reality means reducing the sensing capabilities, or build devices that require regular battery changes or recharging. Both options limit the effectiveness of devices. Here we investigate an alternative. This paper presents a method of designing safe, wireless, inductive power transfer into on-body sensor products. This approach can produce sensing devices that can be worn for longer durations without the need for human intervention, whilst also having greater sensing and data capture capabilities. The paper addresses significant challenges in achieving this aim, in particular: device safety, sufficient power transfer, and human factors regarding device geometry. We show how to develop a device that meets stringent international safety guidelines for electromagnetic energy on the body and describe a design space that allows designers to make trade-offs that balance power transfer with other constraints, e.g. size and bulk, that affect the wearability of devices. Finally we describe a rapid experimental method to investigate the optimal placement of on-body devices and the actual versus theoretical power transfer for on-body, inductively powered devices.
机译:身体健康传感器的设计师面临着艰难的选择。它们必须最大限度地减少设备的功耗,从现实意味着减少传感能力,或者构建需要定期电池的设备或充电的设备。两个选项都限制了设备的有效性。在这里,我们调查替代方案。本文介绍了一种设计安全,无线电感电力转移到体内传感器产品的方法。这种方法可以产生可在不需要人类干预的情况下佩戴更长的持续时间的感测装置,同时还具有更大的感测和数据捕获能力。本文涉及实现这一目标的重大挑战,特别是:设备安全,足够的电力转移和有关设备几何形状的人为因素。我们展示了如何开发一个符合身体电磁能量的严格国际安全准则的设备,并描述了一个设计空间,使设计人员能够与其他限制平衡电力转移的权衡,例如,平衡电力转移。大小和散装,影响器件的耐磨性。最后,我们描述了一种快速实验方法,用于研究体内设备的最佳放置和对体内,电感电力设备的实际与理论功率转移。

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