학술논문

TagSense: Robust Wheat Moisture and Temperature Sensing Using RFID
Document Type
Periodical
Source
IEEE Journal of Radio Frequency Identification IEEE J. Radio Freq. Identif. Radio Frequency Identification, IEEE Journal of. 8:76-87 2024
Subject
Fields, Waves and Electromagnetics
Communication, Networking and Broadcast Technologies
Signal Processing and Analysis
Impedance
Sensors
Antenna measurements
Temperature measurement
Antennas
Temperature sensors
Moisture
Radio frequency identification (RFID)
radio frequency (RF) sensing
target properties sensing
multi-class support vector machine (SVM)
Language
ISSN
2469-7281
2469-729X
Abstract
Grain is a major source of food, while grain security has been considered as a strategic issue in many countries. Temperature and moisture as the two key properties affect the quality of stored grain. Most existing approaches for sensing these properties are expensive, time-consuming, and are difficult to deploy. In this paper, we design a TagSense system to sense the temperature and moisture level of stored wheat using commodity RFID devices, where tag’s impedance is exploited as a feature for target sensing at a low cost. Since impedance is sensitive to the signal propagation distance and incidence angle, we propose a distance-independent algorithm and an angle-agnostic approach to mitigate the impact of distance and angles on the sensing performance. Our extensive experiment results demonstrate that TagSense can achieve a satisfactory sensing performance at any distance and any angle within the sensing range.