摘要
金属是影响超高频射频识别(UHF RFID)系统通信距离的主要环境因素之一。针对金属环境,国内外学者研究较多的是抗金属标签天线,并没有从理论上对RFID系统链路进行分析。文中从理论上对处于金属环境下的RFID系统前向链路进行了分析,得出了标签能够工作时距阅读器的距离r随标签距金属表面距离Δr的变化关系,并将仿真结果和实验结果进行了比较,详细分析了理论计算结果和实验测试结果的差别,得出在Δr=13 mm时,标签可恢复正常通信距离。
Metal is one of the main environmental factors that affect the communication distance of ultra high frequency radio frequency identification(UHF RFID)systems.For metal environment,most researches of domestic and foreign scholars are focused on anti-metal tag antenna,and they do not theoretically analyze on link of RFID system.Theoretically analyze on the forward link of the RFID system in metal environment,and obtains the relationship between the distance to the reader r change with the distance to metal surface Ar when the tag can work.The simulation result and experimental results are compared,differences between the theoretical calculation results and the experimental test results are analyzed in detail.When the result of △r=13mm is obtained,the label can recover the normal communication distance.
作者
李兵
周亚东
林建州
何怡刚
LI Bing;ZHOU Ya-dong;LIN Jian-zhou;HE Yi-gang(School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China;Department of Information Engineering,Hefei University of Technology,Xuancheng 242000,China)
出处
《传感器与微系统》
CSCD
2018年第12期28-30,34,共4页
Transducer and Microsystem Technologies
基金
国家自然科学基金重点资助项目(51637004)
国家自然科学基金资助项目(51777050
51577046)
湖南省自然科学基金资助项目(2017JJ2080)
中央高校基本科研业务费资助项目(JDK16TD01)
国家重大科学仪器设备开发资助项目(2016YFF0102200)
关键词
金属
超高频射频识别
前向链路
metal
uhra high frequency radio frequency identification(UHF RFID)
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