Toward Wide-Area Contactless Wireless Sensing
Toward Wide-Area Contactless Wireless Sensing
复制标题
DOI：
10.1109/tnet.2022.3196744
复制
发表时间：
2022-08-17
影响因子：
3.7
通讯作者：
Chen, Xiaojiang
中科院分区：
文献类型：
--
作者：
Chen, Lili;Chen, Kai;Chen, Xiaojiang
近年来，无需将设备附接到目标的非接触式无线传感已经取得了可喜的进展。然而，一个严重的限制是小的感测范围。提出了一种仅用一对收发器就能实现广域传感的方法。利用LoRa信号实现更大范围的感知，并进一步结合无人机的移动性来扩大感知区域。提出了跨软件和硬件的解决方案，以克服宽范围非接触式传感的两个方面的挑战：（i）设备移动性和LoRa的高灵敏度带来的干扰;以及（ii）当仅采用单对收发器进行传感时，目标信息（如位置）模糊。我们已经开发了一个工作原型的人体目标检测和定位，是特别有用的紧急情况下，如救援搜索，并在高层建筑的控制实验和现场研究进行了评估。广泛的实验证明了在无人机上托管单个LoRa收发器对进行广域非接触式传感的巨大潜力。
Contactless wireless sensing without attaching a device to the target has achieved promising progress in recent years. However, one severe limitation is the small sensing range. This paper presents to realize wide-area sensing with only one transceiver pair. utilizes the LoRa signal to achieve a larger range of sensing and further incorporates drone's mobility to broaden the sensing area. presents solutions across software and hardware to overcome two aspects of challenges for wide-range contactless sensing: (i) the interference brought by device mobility and LoRa's high sensitivity; and (ii) the ambiguous target information such as location when employing just a single pair of transceivers for sensing. We have developed a working prototype of for human target detection and localization that are especially useful in emergency scenarios such as rescue search, and evaluated with both controlled experiments and the field study in a high-rise building. Extensive experiments demonstrate the great potential of for wide-area contactless sensing with a single LoRa transceiver pair hosted on a drone.