Title
Noninvasive Suspicious Liquid Detection Using Wireless Signals.
Abstract
Conventional liquid detection instruments are very expensive and not conducive to large-scale deployment. In this work, we propose a method for detecting and identifying suspicious liquids based on the dielectric constant by utilizing the radio signals at a 5G frequency band. There are three major experiments: first, we use wireless channel information (WCI) to distinguish between suspicious and nonsuspicious liquids; then we identify the type of suspicious liquids; and finally, we distinguish the different concentrations of alcohol. The K-Nearest Neighbor (KNN) algorithm is used to classify the amplitude information extracted from the WCI matrix to detect and identify liquids, which is suitable for multimodal problems and easy to implement without training. The experimental result analysis showed that our method could detect more than 98% of the suspicious liquids, identify more than 97% of the suspicious liquid types, and distinguish up to 94% of the different concentrations of alcohol.
Year
DOI
Venue
2019
10.3390/s19194086
SENSORS
Keywords
Field
DocType
5G,liquid detection,radio propagation,dielectric constant,WCI
Wireless,Dielectric,Matrix (mathematics),Frequency band,Communication channel,Electronic engineering,Engineering,Amplitude,Radio propagation
Journal
Volume
Issue
ISSN
19
19.0
1424-8220
Citations 
PageRank 
References 
1
0.34
0
Authors
9
Name
Order
Citations
PageRank
Jiewen Deng110.34
Wanrong Sun211.02
Lei Guan33415.41
Nan Zhao4205.51
Muhammad Bilal Khan511.02
Aifeng Ren6235.55
Jianxun Zhao710.68
Xiaodong Yang84613.17
Qammer H. Abbasi911637.12