RAPID: 6Fit-a-Part: A Device for Physical Distancing

RAPID：6Fit-a-Part：用于保持身体距离的设备

• 批准号: 2031868
• 负责人: Ashutosh Dhekne
• 金额: $ 10万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-06-01 至 2021-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2031868&HistoricalAwards=false
• 关键词: RAPID; 6Fit; Part; Device; Physical

This research proposes to create a custom wearable device that aids physical distancing by alerting the user when another similar device ventures too close. By warning people of potential safe-distance violations, this research aims at preventing the transmission of COVID-19 and reducing the risk of exposure at public places including grocery stores, pharmacies, hospitals, warehouses, and mitigating public health concerns. The proposed device can be attached to clothing, be worn as an arm-band, or clamp to common objects, such as shopping carts, baskets, and luggage. Using wireless distance measurement technology, the proposed device constantly measures the distance from similar nearby devices, raising alarm if another one is detected in close-range. It would remain undeterred by signal blocking from the user's body, yet ignore devices in an adjoining room or neighboring aisle, since virus transmission across such barriers is unlikely. Existing wireless distance measuring technology on smartphones is unable to make this distinction, necessitating this research. This work analyzes wireless reflections and signal strength variations improving the reliability of distance measurements, and advancing the science of wireless sensing. This research hopes to provide the tools that will enable quicker restoration of normalcy while remaining cautious and avoiding new COVID-19 waves.This research creates a custom wearable device that determines its distance from all similar devices in the vicinity and warns users when safe distance is not maintained. The proposed device communicates using ultra-wideband (UWB) wireless signals allowing accurate distance estimation (ranging) in real-world multipath environments, which existing wireless technology on a smartphone cannot achieve. This work will have two core contributions: (i) a modified ranging protocol for peer-peer distance measurements, and (ii) an environment-sensing technique, performing a 3-way distinction between (a) direct line-of-sight measurements, (b) those across physical barriers (like walls), and (c) those affected by body-blocking of the signals. Modifications to existing ranging protocols are required since UWB distance measurements are based on multiple wireless packets exchanging precise timing information--a mechanism that can lead to severe wireless collisions when left uncoordinated. Environmental sensing is required to avoid false alarms. For example, false-positives (nuisance-alarms) may occur when two devices are close-by but separated by a wall. Contrarily, false negatives can occur when a person's own body blocks wireless signals causing erroneous distance measurements. These contributions are expected to advance knowledge in wireless sensing and multi-device ranging, while enabling safer public places through improved implementation of physical distancing, with impact even beyond COVID-19.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项研究建议创建一种自定义的可穿戴设备，以帮助用户在另一个类似设备冒险太近时提醒用户。通过警告人们潜在的违规行为，这项研究旨在防止COVID-19的传播，并降低包括杂货店，药房，医院，仓库在内的公共场所接触风险，并减轻公共卫生问题。提出的设备可以连接到衣服上，作为臂带或夹在通用物体上，例如购物车，篮子和行李。使用无线距离测量技术，该提议的设备不断测量与附近设备相似的距离，如果在近距离检测到另一个设备，请提高警报。由于从用户的身体中封锁的信号，但忽略了相邻房间或附近过道的设备，这将保持不足，因为不太可能在此类障碍物上传播病毒。智能手机上的现有无线距离测量技术无法做出这种区别，因此需要进行这项研究。这项工作分析了无线反射和信号强度变化，以提高距离测量的可靠性，并推进无线传感科学。这项研究希望提供能够更快地恢复常态的工具，同时保持谨慎并避免新的Covid-19波。这项研究创建了一种自定义的可穿戴设备，该设备决定了其与附近所有类似设备的距离，并在不维护安全距离时警告用户。所提出的设备使用超宽带（UWB）无线信号通信，允许在现实世界中的多路径环境中进行准确的距离估计（范围），智能手机上现有的无线技术无法实现。这项工作将有两个核心贡献：（i）用于对等距离测量值的修改后的范围协议，以及（ii）环境感应技术，在（a）（a）直接视线测量值之间进行3向区别，（b）跨物理障碍物（例如墙壁）和（例如墙壁），以及（c）受信号的身体受阻的人。由于UWB距离测量值是基于多个无线数据包交换精确的计时信息，因此需要对现有范围协议进行修改 - 这种机制可能会导致不协调时严重的无线碰撞。需要环境感应以避免错误警报。例如，当两个设备靠近但被墙壁隔开时，可能会发生假阳性（滋扰图）。相反，当一个人自己的身体阻止无线信号导致错误的距离测量值时，可能会发生虚假负面。预计这些贡献将提高无线传感和多设备范围的知识，同时通过改善身体距离实施更安全的公共场所，甚至超出了Covid-covid-129的影响，该奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识和更广泛影响的评估来通过评估来获得支持的。

项目成果

ITrackU: tracking a pen-like instrument via UWB-IMU fusion

• DOI: 10.1145/3458864.3467885
• 发表时间: 2021-06
• 期刊: Proceedings of the 19th Annual International Conference on Mobile Systems, Applications, and Services
• 作者: Yifeng Cao;Ashutosh Dhekne;M. Ammar

6Fit-A-Part: A Protocol for Physical Distancing on a Custom Wearable Device

• DOI: 10.1109/icnp49622.2020.9259374
• 发表时间: 2020-10
• 期刊: 2020 IEEE 28th International Conference on Network Protocols (ICNP)
• 作者: Yifeng Cao;Ashutosh Dhekne;M. Ammar

Physical Games in K-12 despite COVID-19

尽管存在新冠肺炎 (COVID-19) 疫情，K-12 仍开展体育运动

• DOI: 10.1145/3446382.3448669
• 发表时间: 2021
• 期刊: HotMobile '21: Proceedings of the 22nd International Workshop on Mobile Computing Systems and Applications
• 作者: Cao, Yifeng;Dhekne, Ashutosh;Ammar, Mostafa
• 通讯作者: Ammar, Mostafa