Radio frequency sensing for assistive monitoring

Yau Hee Kho

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

With the abundance of ubiquitous transmission of wireless signals nowadays due to the proliferation of wireless devices, these man-made radio frequency signals in the form of electromagnetic waves can be exploited in various forms, for example localization and tracking. Here, we describe how these signals can be used in sensing an object or human in the environment. We describe the design concept and implementation of an indoor passive tracking system that utilises an array of Wi-Fi transceivers, and without any electronic device or tag attached to the object being tracked. The sensing of an object or a person described here is made possible by exploiting the fundamental characteristic of signal attenuation due to blocking, i.e. shadowing, that is prevalent in a typical wireless communication system. By detecting significant signal attenuation in the system (i.e. by measuring the received signal strength value), it is possible to infer that an object is blocking the line-of-sight (LOS) link in a transceiver set and therefore transforming the existing hardware configuration into a proximity sensor network.

Original languageEnglish
Title of host publicationSmart Sensors, Measurement and Instrumentation
PublisherSpringer International Publishing AG
Pages241-258
Number of pages18
DOIs
Publication statusPublished - Jan 1 2017

Publication series

NameSmart Sensors, Measurement and Instrumentation
Volume22
ISSN (Print)2194-8402
ISSN (Electronic)2194-8410

Fingerprint

radio frequencies
Monitoring
Transceivers
transmitter receivers
Proximity sensors
Wi-Fi
attenuation
Electromagnetic waves
Computer hardware
Sensor networks
Communication systems
wireless communication
line of sight
proximity
telecommunication
electromagnetic radiation
hardware
sensors
configurations
electronics

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Instrumentation

Cite this

Kho, Y. H. (2017). Radio frequency sensing for assistive monitoring. In Smart Sensors, Measurement and Instrumentation (pp. 241-258). (Smart Sensors, Measurement and Instrumentation; Vol. 22). Springer International Publishing AG. https://doi.org/10.1007/978-3-319-47319-2_12

Radio frequency sensing for assistive monitoring. / Kho, Yau Hee.

Smart Sensors, Measurement and Instrumentation. Springer International Publishing AG, 2017. p. 241-258 (Smart Sensors, Measurement and Instrumentation; Vol. 22).

Research output: Chapter in Book/Report/Conference proceedingChapter

Kho, YH 2017, Radio frequency sensing for assistive monitoring. in Smart Sensors, Measurement and Instrumentation. Smart Sensors, Measurement and Instrumentation, vol. 22, Springer International Publishing AG, pp. 241-258. https://doi.org/10.1007/978-3-319-47319-2_12
Kho YH. Radio frequency sensing for assistive monitoring. In Smart Sensors, Measurement and Instrumentation. Springer International Publishing AG. 2017. p. 241-258. (Smart Sensors, Measurement and Instrumentation). https://doi.org/10.1007/978-3-319-47319-2_12
Kho, Yau Hee. / Radio frequency sensing for assistive monitoring. Smart Sensors, Measurement and Instrumentation. Springer International Publishing AG, 2017. pp. 241-258 (Smart Sensors, Measurement and Instrumentation).
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