Wireless Qi-powered, Multinodal and Multisensory Body Area Network for Mobile Health.
Wireless Qi-powered, Multinodal and Multisensory Body Area Network for Mobile Health.
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DOI：
10.1109/jiot.2020.3040713
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发表时间：
2021-05
影响因子：
10.6
通讯作者：
Tseng P
中科院分区：
文献类型：
--
作者：
Dautta M;Jimenez A;Dia KKH;Rashid N;Abdullah Al Faruque M;Tseng P
无线、无电池身体区域网络（BAN）能够以最少的干预实现可靠的长期健康监测，并有可能通过移动健康监测改变患者护理。目前实现这种无电池网络的方法在传感节点的数量、能力和定位方面受到限制，这与无线电源和传感节点之间的电源、数据速率和工作距离要求的限制有关。在这里，我们研究了一种基于qi的近场电力传输方案，该方案可以有效地驱动无线，无电池，多节点和多传感器长距离BAN。它由单个Qi电源（如手机），一个分离/非拴无源中间继电器（PIR）（促进能量从中央Qi源传输到身体上的多个节点），以及最后放置在整个身体上的单个/分离传感节点组成。除了这个电源方案，我们还实现了Gazell协议的星型网络拓扑，以实现一个主机到许多传感节点的连续连接，同时最大限度地减少长时间内的数据丢失。Qi的高功率传输能力使其能够无线支持多个传感器（最多12个）和传感节点（最多6个），使用单个发射器进行长距离（60厘米）和20赫兹的采样率。该方案在体外和体内进行了研究。
Wireless, battery-free Body Area Networks (BAN) enable reliable long-term health monitoring with minimal intervention, and have the potential to transform patient care via mobile health monitoring. Current approaches for achieving such battery-free networks are limited in the number, capability, and positioning of sensing nodes–this is related to constraints in power supply, data rate, and working distance requirements between the wireless power source and sensing nodes. Here, we investigate a Qi-based, near-field power transfer scheme that can effectively drive wireless, battery-free, multi-node and multi-sensor BAN over long distances. This consists of a single Qi power source (such as a cellphone), a detached/untethered Passive Intermediate Relay (PIR) (facilitates power transfer from a central Qi source to multiple nodes on the body), and finally individual/detached sensing nodes placed throughout the body. Alongside this power scheme we implement the star network topology of a Gazell protocol to enable the continuous connection of one host to many sensing nodes while minimizing data loss over long temporal periods. The high-power transmission capabilities of Qi enables wireless support for a multitude of sensors (up to 12), and sensing nodes (up to 6) with a single transmitter at long distances (60 cm) and a sample rate of 20 Hz. This scheme is studied both in-vitro and in-vivo on the body.
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