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Passive Wireless Dual-Tag UHF RFID Sensor System for Surface Crack Monitoring

机译：用于表面裂纹监测的被动无线双标签UHF RFID传感器系统

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摘要

The generation and propagation of cracks are critical factors that affect the performance and life of large structures. Therefore, in order to minimize maintenance costs and ensure personal safety, it is necessary to monitor key structures. The sensor based on ultra-high frequency radio frequency identification (UHF RFID) antenna has the advantages of passive wireless, low cost, and great potential in the field of metallic structure health monitoring. In this paper, aimed at the key parts of a metallic structure, a dual-tag system is used for crack monitoring. In conjunction with mode analysis, the principles of the sensing tag and the coupling principles of the dual-tag are analyzed. Considering that the dual-tag is placed in different methods, the effect of mutual coupling on the sensing performance of the tag is studied. The results show that the frequency of the sensing tag can be tuned by adding the interference tag, and the dual-tag sensor system has reasonable sensitivity. The results also provide potential guidance for the optimal placement of multiple tags in the near-field region.
机译：裂缝的产生和传播是影响大型结构性能和寿命的关键因素。因此，为了最大限度地减少维护成本并确保人身安全，有必要监控关键结构。基于超高频射频识别（UHF RFID）天线的传感器具有无线无线，低成本和金属结构健康监测领域的潜力的优点。在本文中，针对金属结构的关键部件，双标签系统用于裂纹监测。结合模式分析，分析了传感标签的原理和双标签的耦合原理。考虑到双标签以不同的方法放置，研究了相互耦合对标签的感测性能的影响。结果表明，可以通过添加干扰标签来调谐传感标签的频率，并且双标签传感器系统具有合理的灵敏度。结果还提供了近场区域中多个标签的最佳位置的潜在指导。

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