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利用 LoRAWAN 信号进行深层植入设备和可穿戴应用的反向散射通信的可行性。

Feasibility of Backscatter Communication Using LoRAWAN Signals for Deep Implanted Devices and Wearable Applications.

机构信息

Department of Electronics, Electrics and Automatic Control Engineering, Rovira i Virgili University, 43007 Tarragona, Spain.

出版信息

Sensors (Basel). 2020 Nov 6;20(21):6342. doi: 10.3390/s20216342.

DOI:10.3390/s20216342
PMID:33172140
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7664441/
Abstract

This paper presents a method for low data rate transmission for devices implanted in the body using backscattered Long Range (LoRa) signals. The method uses an antenna loaded with a switch that changes between two load impedances at the rate of a modulating oscillator. Consequently, the LoRa signal transmitted by a LoRa node is reflected in the adjacent channels and can be detected with a LoRa gateway tuned to the shifted channels. A prototype developed to operate at Medical Implant Communication Service (MICS) and the Industrial Scientific and Medical (ISM) 433 MHz band is presented. The prototype uses a commercial ceramic antenna with a matched network tuned to the frequency band with high radiation efficiency. The effect of the coating material covering the antenna was studied. Simulated and experimental results using a phantom show that it is feasible to read data from deep implanted devices placed a few meters from the body because of the high sensitivity of commercial LoRa receivers.

摘要

本文提出了一种利用体散射长距离（LoRa）信号为植入设备进行低数据率传输的方法。该方法使用加载有开关的天线，该开关以调制振荡器的速率在两个负载阻抗之间切换。因此，LoRa 节点发送的 LoRa 信号在相邻信道中反射，并可通过调谐到偏移信道的 LoRa 网关检测到。本文提出了一种在医疗植入通信服务（MICS）和工业、科学和医疗（ISM）433MHz 频段运行的原型。该原型使用带有匹配网络的商用陶瓷天线，该网络调谐到具有高辐射效率的频带。研究了覆盖天线的涂层材料的影响。使用仿体进行的仿真和实验结果表明，由于商用 LoRa 接收器的高灵敏度，可从放置在离身体数米远的深度植入设备中读取数据。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/942993e3f3a9/sensors-20-06342-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/199caaf55514/sensors-20-06342-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/b99f64215d96/sensors-20-06342-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/8d3ca1f7fec3/sensors-20-06342-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/b39cd92b6daf/sensors-20-06342-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/e0e368bdb947/sensors-20-06342-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/d4fa54ec903c/sensors-20-06342-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/4804faef74bf/sensors-20-06342-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/7121d6c014f8/sensors-20-06342-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/942993e3f3a9/sensors-20-06342-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/199caaf55514/sensors-20-06342-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/33735a2c6cf6/sensors-20-06342-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/05ecdece61cd/sensors-20-06342-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/089dfd4ca384/sensors-20-06342-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/5547a50f102e/sensors-20-06342-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/b99f64215d96/sensors-20-06342-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/8d3ca1f7fec3/sensors-20-06342-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/b39cd92b6daf/sensors-20-06342-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/e0e368bdb947/sensors-20-06342-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/d4fa54ec903c/sensors-20-06342-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/4804faef74bf/sensors-20-06342-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/7121d6c014f8/sensors-20-06342-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ef6b/7664441/942993e3f3a9/sensors-20-06342-g013.jpg

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