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一个完全可打印的应变传感器,可实现高度灵敏的无线近场审讯

Hassan A Mahmoud^1,2, Hussein Nesser^1,2, Tarek M Mostafa³

¹Mechanical Engineering Program, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Kingdom of Saudi Arabia.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|January 21, 2025

概括

本研究介绍了一种使用射频 (RF) 技术的新型,可打印的无线应变传感器. 这种廉价的设备为复合材料的结构健康监测提供了高灵敏度.

科学领域:

材料科学材料科学材料科学
电气工程电气工程
机械工程机械工程

背景情况:

无线,被动和灵活的应变传感器对于先进的结构健康监测至关重要.
目前的局限性包括需要有线连接和主动电源.
操作简单性和适应性是无线传感器技术的关键优势.

研究的目的:

开发一种全新的,完全可打印的,廉价的,并准备好使用的无线拉伸传感器.
为了利用无线电频率 (RF) 技术进行被动的,无线的应变测量.
为了证明传感器在监测复合结构中的有效性.

主要方法:

使用射频技术和丝网印刷制造一个无线传感器.
压电阻电极与电容传感器的集成,以提高灵敏度.
使用近场通信 (NFC) 标签与电感器-电容器 (LC) 共振电路.
测试传感器在玻璃纤维增强聚合物 (GFRP) 样本上测量应变时的性能.

主要成果:

传感器在电容模式下,在5%以下的压力下,在20 MHz达到≈16的高度因子 (GF).
无线应变监测显示了显著的共振频率转移 (GF ≈2.2).
在GFRP曲测试期间无线监测应变时观察到出色的性能.

结论:

开发的传感器是结构健康监测的成本效益高,适应性强的解决方案.
该技术显示了嵌入式传感在各种复合结构中的巨大潜力.
这项工作为关键基础设施的先进,非侵入性监测铺平了道路.

关键词:

没有NFC,没有NFC.这就是SHM SHM.电容应变传感器电容应变传感器嵌入式传感器的传感器.无源射频传感器是一种被动的射频传感器.

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