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MAGIC: Magnetic Resonant Coupling for Intra-body Communication

机译:MAGIC:用于身体内部通信的磁共振耦合

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This paper proposes MAGIC: magnetic resonant (MR) coupling for intra-body communication between implants and wearables. MAGIC includes not only the hardware-software design of the coupled coils and methods of manipulating the magnetic field for relaying information, but also the ability to raise immediate emergency-related alerts with guaranteed delivery time. MR coupling makes the design of the transmission link robust to channel-related parameters, as the magnetic permeability of skin and muscle is close to that of air. Thus, changes in tissue moisture content and thickness does not impact the design, which is a persistent problem in other approaches for implant communications like RF, ultrasound and galvanic coupling (GC). The paper makes three main contributions: It develops the theory leading to the design of the information relaying coils in MAGIC. It proposes a systems-level design of a communication link that extends up to 50cm with a low expected BER of 10−4. Finally, the paper includes an experimental setup demonstrating how MAGIC operates in air and muscle tissue, as well as a comparison with alternative implant communication technologies, such as classical radio frequency and GC. Results reveal that MAGIC offers instantaneous alerts with up to 5 times lower power consumption compared to other forms of communication.
机译:本文提出了MAGIC:用于植入物和可穿戴设备之间的体内通信的磁共振(MR)耦合。 MAGIC不仅包括耦合线圈的硬件软件设计和操纵用于中继信息的磁场的方法,还包括在保证交付时间的情况下立即发出与紧急情况有关的警报的功能。 MR耦合使传输链路的设计对与通道相关的参数具有鲁棒性,因为皮肤和肌肉的磁导率接近空气的磁导率。因此,组织水分含量和厚度的变化不会影响设计,这在诸如RF,超声波和电流耦合(GC)的其他植入物通信方法中是一个持续存在的问题。本文做出了三个主要贡献:它发展了导致MAGIC中的信息中继线圈设计的理论。它提出了一种通信链路的系统级设计,该链路可以延伸到50厘米,并且预期BER较低,为10 -4 。最后,该论文包括一个实验装置,演示了MAGIC在空气和肌肉组织中的工作方式,并与其他植入物通信技术进行了比较,例如经典的射频和GC。结果表明,与其他通讯方式相比,MAGIC可以提供即时警报,其功耗降低了多达5倍。

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