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- ArticleMarch 2024
- research-articleOctober 2023
MUSE-Fi: Contactless MUti-person SEnsing Exploiting Near-field Wi-Fi Channel Variation
ACM MobiCom '23: Proceedings of the 29th Annual International Conference on Mobile Computing and NetworkingOctober 2023, Article No.: 75, Pages 1–15https://doi.org/10.1145/3570361.3613290Having been studied for more than a decade, Wi-Fi human sensing still faces a major challenge in the presence of multiple persons, simply because the limited bandwidth of Wi-Fi fails to provide a suficient range resolution to physically separate ...
- research-articleJune 2023
Multi-User Room-Scale Respiration Tracking Using COTS Acoustic Devices
ACM Transactions on Sensor Networks (TOSN), Volume 19, Issue 4Article No.: 85, Pages 1–28https://doi.org/10.1145/3594220Continuous domestic respiration monitoring provides vital information for diagnosing assorted diseases. In this article, we introduce RespTracker, the first continuous, multiple-person respiration tracking system in domestic settings using acoustic-based ...
- research-articleJanuary 2023
Quantifying the Physical Separability of RF-Based Multi-Person Respiration Monitoring via SINR
SenSys '22: Proceedings of the 20th ACM Conference on Embedded Networked Sensor SystemsNovember 2022, Pages 47–60https://doi.org/10.1145/3560905.3568513Recent years have witnessed a growing interest in contact-free respiration monitoring leveraging radio-frequency (RF) technologies. However, the proposed solutions mostly consider single-person scenarios, whereas a few multi-person monitoring proposals ...
- research-articleFebruary 2020
A cost-effective and non-invasive system for sleep and vital signs monitoring using passive RFID tags
MobiQuitous '19: Proceedings of the 16th EAI International Conference on Mobile and Ubiquitous Systems: Computing, Networking and ServicesNovember 2019, Pages 153–161https://doi.org/10.1145/3360774.3360797Inadequate sleep has very bad impacts on human daily life activities. Sleep disorders are one of the main reasons for the inadequate sleep problem. Diagnosis of these disorders is a very challenging task because they occur at night when the patients are ...
- demonstrationSeptember 2019
A CSI-ratio model based house-level respiration monitoring system using COTS wifi devices
UbiComp/ISWC '19 Adjunct: Adjunct Proceedings of the 2019 ACM International Joint Conference on Pervasive and Ubiquitous Computing and Proceedings of the 2019 ACM International Symposium on Wearable ComputersSeptember 2019, Pages 354–357https://doi.org/10.1145/3341162.3343830The past few years have witnessed the great potential of exploiting channel state information (CSI) retrieved from COTS WiFi devices for respiration monitoring. However, existing approaches only work when the target is close to the WiFi transceivers and ...
- surveyJune 2019
WiFi Sensing with Channel State Information: A Survey
ACM Computing Surveys (CSUR), Volume 52, Issue 3Article No.: 46, Pages 1–36https://doi.org/10.1145/3310194With the high demand for wireless data traffic, WiFi networks have experienced very rapid growth, because they provide high throughput and are easy to deploy. Recently, Channel State Information (CSI) measured by WiFi networks is widely used for ...
- research-articleOctober 2018
Experience: Cross-Technology Radio Respiratory Monitoring Performance Study
- Peter Hillyard,
- Anh Luong,
- Alemayehu Solomon Abrar,
- Neal Patwari,
- Krishna Sundar,
- Robert Farney,
- Jason Burch,
- Christina Porucznik,
- Sarah Hatch Pollard
MobiCom '18: Proceedings of the 24th Annual International Conference on Mobile Computing and NetworkingOctober 2018, Pages 487–496https://doi.org/10.1145/3241539.3241560This paper addresses the performance of systems which use commercial wireless devices to make bistatic RF channel measurements for non-contact respiration sensing. Published research has typically presented results from short controlled experiments on ...
- ArticleApril 2009
Breath Timing Monitoring Using Spring Coil
IACSIT-SC '09: Proceedings of the 2009 International Association of Computer Science and Information Technology - Spring ConferenceApril 2009, Pages 480–482https://doi.org/10.1109/IACSIT-SC.2009.72We describe a non-invasive breath monitoring method using spring coil which is used to detect the movement of the body surface due to breathing. In this method, subjectwares a vest with the spring coil on the inner side. Therefore, it is compressed by ...