摘要
近年来无源RFID技术发展迅猛,能快速实现标签被动非接触读取,在物联网领域得到了广泛发展与应用.RFID标签由芯片和天线两部分组成,同时天线具有特殊的力学特性——其谐振频率与天线物理尺寸有着较好的线性关系.受此启发,可将标签天线部分设计成便于进行应变测量的矩形贴片,从而实现应变的无源被动非接触测量.理论和相关试验表明,现有的标签设计读取距离仅有3~5m,且未对结构应变和天线辐射元应变之间的差异对试验结果的影响进行研究.本文首先对标签进行重新设计,确定了天线传感器的合理尺寸,将读取距离扩大到18m以上;其次通过设计一组拉伸试验,探究了结构应变和辐射元应变对试验结果的影响规律,为传感器下一步实际应用提供依据.
In recent years, the passive RFID technology has developed rapidly. It can quickly realize passive non-contact reading of tags, and has been widely developed and applied in the field of logistics net. The RFID tag consists of a chip and an antenna. The antenna has a special mechanical feature: its resonance frequency has a good linear relationship with the physical size of the antenna. Considering this feature, the antenna part of the tag can be designed as a rectangular patch for the strain measurement, so that the passive non-contact measurement of strain can be achieved. Past theories and experiments showed that the existing tag design reading distance is only 3~5 meters, and the effect of the difference between the structural strain and the antenna radiating element strain on test results has not been studied. By redesigning the label, the reading distance has been increased to 18 meters. Through experiment, the influence of structural strain and radiation element strain has been distinguished, and the theoretical simulation results have been verified.
作者
沈雁彬
黄程
黄蔚霞
罗尧治
SHEN Yan-bin;HUANG Cheng;HUANG Wei-xia;LUO Yao-zhi(Space Structures Research Centre,Zhejiang University,Hangzhou 310058,China;Zhejiang Provincial Key Laboratory of Space Structures,Hangzhou 310058,China)
出处
《空间结构》
CSCD
北大核心
2022年第2期3-9,共7页
Spatial Structures
基金
国家自然科学基金项目(51578491)
十三五国家重点研发计划(2017YFC0806100)。
