TagSense: Robust Wheat Moisture and Temperature Sensing Using RFID

IF 2.3 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE journal of radio frequency identification Pub Date : 2024-04-16 DOI:10.1109/JRFID.2024.3389868
Erbo Shen;Weidong Yang;Xuyu Wang;Bo Kang;Shiwen Mao
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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.
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TagSense:使用 RFID 进行可靠的小麦湿度和温度传感
谷物是粮食的主要来源,而谷物安全在许多国家都被视为一个战略问题。温度和水分是影响储藏谷物质量的两个关键属性。现有的感知这些属性的方法大多昂贵、耗时,而且难以部署。在本文中,我们设计了一种 TagSense 系统,利用商品 RFID 设备来感知储存小麦的温度和湿度水平,其中标签的阻抗被用作目标感知的一个特征,而且成本低廉。由于阻抗对信号传播距离和入射角度很敏感,我们提出了一种与距离无关的算法和一种与角度无关的方法,以减轻距离和角度对传感性能的影响。我们的大量实验结果表明,TagSense 可以在感应范围内的任何距离和任何角度实现令人满意的感应性能。
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