无线无源超高频 RFID 天线传感器用于表面裂纹监测和定量分析。

Wireless Passive Ultra High Frequency RFID Antenna Sensor for Surface Crack Monitoring and Quantitative Analysis.

机构信息

School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China.

School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.

出版信息

Sensors (Basel). 2018 Jul 3;18(7):2130. doi: 10.3390/s18072130.

DOI:10.3390/s18072130

PMID:29970807

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6068688/

Abstract

An exponential increase in large-scale infrastructure facilitates the development of wireless passive sensors for permanent installation and in-service health monitoring. Due to their wireless, passive and cost-effective characteristics, ultra-high frequency (UHF) radio frequency identification (RFID) tag antenna based sensors are receiving increasing attention for structural health monitoring (SHM). This paper uses a circular patch antenna sensor with an open rectangular window for crack monitoring. The sensing mechanism is quantitatively studied in conjunction with a mode analysis, which can uncover the intrinsic principle for turning an antenna into a crack sensor. The robustness of the feature is examined when the variation of crack position associated with an aluminum sample and the antenna sensor is considered. The experimental results demonstrate a reasonable sensitivity and resolution for crack characterization.

摘要

大规模基础设施的指数级增长为无线无源传感器的永久安装和在役健康监测提供了便利。由于其无线、无源和经济高效的特点，基于超高频 (UHF) 射频识别 (RFID) 标签天线的传感器越来越受到结构健康监测 (SHM) 的关注。本文使用具有开放矩形窗口的圆形贴片天线传感器进行裂纹监测。结合模式分析对传感机制进行了定量研究，揭示了将天线转变为裂纹传感器的内在原理。当考虑到与铝样品和天线传感器相关的裂纹位置的变化时，检验了该特征的稳健性。实验结果表明，该方法对裂纹特征具有合理的灵敏度和分辨率。