On Remote Temperature Sensing Using Commercial UHF RFID Tags
On Remote Temperature Sensing Using Commercial UHF RFID Tags
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DOI：
10.1109/jiot.2019.2941023
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发表时间：
2019-12-01
影响因子：
10.6
通讯作者：
Patton, Justin
中科院分区：
文献类型：
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作者：
Wang, Xiangyu;Zhang, Jian;Patton, Justin
随着射频识别（RFID）技术的快速发展，基于RFID的传感器引起了人们极大的兴趣。由于RFID标签本身的局限性，现有的RFID温度传感技术大多依赖于硬件改造，增加了成本，阻碍了其推广应用。在这篇文章中，我们提出了RFThermometer，一个远程温度传感系统与商业超高频（UHF）RFID标签。我们首先研究温度对RFID相位的影响。为了减轻由于相位测量缺失而导致的精度下降，提出了一种张量补全方法来恢复缺失的相位，并利用高斯过程模型在离线阶段构建相位-温度图。在在线阶段，未知的温度估计的动态时间规整（DTW）的贪婪方法。大量的实验结果，以验证与现成的RFID器件的RF温度计的性能。
With the fast-growing adoption of the radio-frequency identification (RFID) technology, RFID-based sensors have attracted great interest. Due to the limitation of RFID tags, most existing RFID-based temperature sensing works rely on hardware modification, which increases the cost and hampers its deployment. In this article, we propose RFThermometer, a remote temperature sensing system with commercial ultra high frequency (UHF) RFID tags. We first investigate the effect of temperature on RFID phases. To alleviate the precision deterioration caused by missing phase measurements, a tensor completion method is proposed to restore missing phases and a Gaussian process model is leveraged to construct a phase-temperature map in the offline stage. In the online stage, the unknown temperature is estimated by a dynamic time warping (DTW)-based greedy method. Extensive experimental results are presented to validate the performance of RFThermometer with off-the-shelf RFID devices.