Annu Int Conf IEEE Eng Med Biol Soc. 2022 Jul;2022:873-876. doi: 10.1109/EMBC48229.2022.9871937.
This work investigates the feasibility of having a mattress based wireless power transfer system with transfer efficiency such that the received power could potentially be enough to fully power up wearable systems intended to provide some level of continuous physiological monitoring; hence eliminating the need for users to ever have to recharge the systems. The novel architecture proposed in this work, to optimise power transfer efficiency against angular misalignment typical of non-static use is based on a non-coupling coil structure combined with a magnetic beamforming scheme. The coil system also incorporates a non-coupling relay array to overcome the significant loss in power transfer efficiency associated to increasing distances between transmitters and receivers. The system is proven to be able to deliver around 11.8mW of power in the worst-case scenario, with a receiver 25cm above the transmitters, whilst meeting the safety requirements associated to electromagnetic exposure to the human body.
这项工作研究了具有传输效率的基于床垫的无线功率传输系统的可行性，使得接收功率有可能足以完全为旨在提供某种程度的连续生理监测的可穿戴系统供电；因此，用户无需再对系统进行充电。这项工作中提出的新颖架构针对非静态使用中典型的角度失准情况对功率传输效率进行了优化，其基于非耦合线圈结构和磁场成形方案。该线圈系统还结合了非耦合继电器阵列，以克服在增加发送器和接收器之间的距离时与功率传输效率相关的显著损失。该系统已被证明能够在最坏情况下，在接收器距离发送器 25 厘米的情况下，传输约 11.8mW 的功率，同时符合与人体电磁暴露相关的安全要求。
