Title
A Novel Sensor Based on a Single-Pixel Microwave Radiometer for Warm Object Counting: Concept Validation and IoT Perspectives.
Abstract
Controlled measurements by a low-cost single-pixel microwave radiometer operating at 12.65 GHz were carried out to assess the detection and counting capability for targets warmer than the surroundings. The adopted reference test targets were pre-warmed water and oil; and a hand, both naked and wearing a glove. The results showed the reliability of microwave radiometry for counting operations under controlled conditions, and its effectiveness at detecting even warm targets masked by unheated dielectric layers. An electromagnetic model describing the scenario sensed by the radiometer antenna is proposed, and comparison with the experimental observations shows a good agreement. The measurements prove that reliable counting is enabled by an antenna temperature increment, for each target sample added, of around 1 K. Starting from this value, an analysis of the antenna filling factor was performed to provide an instrument useful for evaluating real applicability in many practical situations. This study also allows the direct people counting problem to be addressed, providing preliminary operational indications, reference numbers and experimental validation.
Year
DOI
Venue
2017
10.3390/s17061388
SENSORS
Keywords
Field
DocType
microwave radiometer,antenna temperature,filling factor,warm target counting
Electromagnetic model,Remote sensing,Internet of Things,Temperature Increment,Electronic engineering,Counting problem,Pixel,Engineering,Filling factor,Microwave radiometer,Radiometer
Journal
Volume
Issue
ISSN
17
6.0
1424-8220
Citations 
PageRank 
References 
1
0.35
7
Authors
3
Name
Order
Citations
PageRank
Federico Alimenti14411.65
Stefania Bonafoni25215.19
Roselli, L.3134.05