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首页> 外文会议>Conference on sensors and smart structures technologies for civil, mechanical, and aerospace systems >Compressive strain measurement using RFID patch antenna sensors
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Compressive strain measurement using RFID patch antenna sensors

机译：使用RFID贴片天线传感器进行压缩应变测量

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摘要

In this research, two radiofrequency identification (RFID) antenna sensor designs are tested for compressive strain measurement. The first design is a passive (battery-free) folded patch antenna sensor with a planar dimension of 61mm × 69mm. The second design is a slotted patch antenna sensor, whose dimension is reduced to 48mm × 44mm by introducing slots on antenna conducting layer to detour surface current path. A three-point bending setup is fabricated to apply compression on a tapered aluminum specimen mounted with an antenna sensor. Mechanics-electromagnetics coupled simulation shows that the antenna resonance frequency shifts when each antenna sensor is under compressive strain. Extensive compression tests are conducted to verify the strain sensing performance of the two sensors. Experimental results confirm that the resonance frequency of each antenna sensor increases in an approximately linear relationship with respect to compressive strain. The compressive strain sensing performance of the two RFID antenna sensors, including strain sensitivity and determination coefficient, is evaluated based on the experimental data.
机译：在这项研究中，对两种射频识别（RFID）天线传感器设计进行了压缩应变测量测试。第一种设计是无源（无电池）折叠式贴片天线传感器，其平面尺寸为61mm×69mm。第二种设计是缝隙贴片天线传感器，通过在天线导电层上引入缝隙来绕开表面电流路径，其尺寸减小到48mm×44mm。制造了三点弯曲装置，以对安装有天线传感器的锥形铝样品施加压力。机械-电磁耦合仿真显示，当每个天线传感器处于压缩应变下时，天线谐振频率都会发生偏移。进行了广泛的压缩测试，以验证两个传感器的应变传感性能。实验结果证实，每个天线传感器的谐振频率相对于压缩应变呈近似线性关系增加。根据实验数据评估两个RFID天线传感器的压缩应变传感性能，包括应变灵敏度和确定系数。

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