Indoor Motion Detection Using Wi-Fi Channel State Information in Flat Floor Environments Versus in Staircase Environments
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School of Information Engineering, Wuhan University of Technology, Wuhan 430070, China
2
Department of Mathematics and Computer Science, Changsha University, Changsha 410083, China
3
Department of Electrical and Computer Engineering, Worcester Polytechnic Institute, Worcester, MA 01609, USA
*
Author to whom correspondence should be addressed.
Sensors 2018, 18(7), 2177; https://doi.org/10.3390/s18072177
Received: 1 June 2018
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Revised: 28 June 2018
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Accepted: 3 July 2018
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Published: 6 July 2018
(This article belongs to the Section Remote Sensors)
Recently, Wi-Fi channel state information (CSI) motion detection systems have been widely researched for applications in human health care and security in flat floor environments. However, these systems disregard the indoor context, which is often complex and consists of unique features, such as staircases. Motion detection on a staircase is also meaningful and important for various applications, such as fall detection and intruder detection. In this paper, we present the difference in CSI motion detection in flat floor and staircase environments through analysing the radio propagation model and experiments in real settings. For comparison in the two environments, an indoor CSI motion detection system is proposed with several novel methods including correlation-based fusion, moving variance segmentation (MVS), Doppler spread spectrum to improve the system performance, and a correlation check to reduce the implementation cost. Compared with existing systems, our system is validated to have a better performance in both flat floor and staircase environments, and further utilized to verify the superior CSI motion detection performance in staircase environments versus flat floor environments.
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Keywords:
motion detection; Wi-Fi; CSI; indoor; staircase; fall detection; intruder detection
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MDPI and ACS Style
Dong, Z.; Li, F.; Ying, J.; Pahlavan, K. Indoor Motion Detection Using Wi-Fi Channel State Information in Flat Floor Environments Versus in Staircase Environments. Sensors 2018, 18, 2177. https://doi.org/10.3390/s18072177
AMA Style
Dong Z, Li F, Ying J, Pahlavan K. Indoor Motion Detection Using Wi-Fi Channel State Information in Flat Floor Environments Versus in Staircase Environments. Sensors. 2018; 18(7):2177. https://doi.org/10.3390/s18072177
Chicago/Turabian StyleDong, Zehua, Fangmin Li, Julang Ying, and Kaveh Pahlavan. 2018. "Indoor Motion Detection Using Wi-Fi Channel State Information in Flat Floor Environments Versus in Staircase Environments" Sensors 18, no. 7: 2177. https://doi.org/10.3390/s18072177
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