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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (4): 719-724    DOI: 10.3785/j.issn.1008-973X.2012.04.021
    
Development of EAS RF tag quality online detection sensor
ZHU Ya-ping1, ZHENG Wei-hong2, XU Wei-hua3, YANG Cheng-zhong1
1. School of Automation, Hangzhou Dianzi University, Hangzhou 310018, China; 2. School of Information and
Electronic Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China;
3. Institute of CyberSystems and Control, Zhejiang University, Hangzhou 310027, China
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Abstract  

 The double coil sensor based on mutual inductance coupling principle was developed in order to detect performance parameters of electronic article surveillance (EAS) radio frequency (RF) tag. The physical model and dynamic mathematical model of detection sensor were constructed according to the results of analysis for the model of EAS RF tag. Then the frequency response characteristic of the sensor was analyzed. The double coil with parallel structure was proposed in order to make the electromagnetic field evenly distributed around the tag detection region, and to facillitate the continuous online detection of the tag. Effect of the number of turns in the coil and spatial structure parameters on sensitivity was tested based on circuit parameters simulation analysis, and all parameters of the sensor were determined. The detecting results indicate that the sensor has high detection precision, stable property and fast response, which can meet the online detection requirements of EAS RF tag performance parameters.

Published: 17 May 2012
CLC:  TP 212.2  
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Cite this article:

ZHU Ya-ping, ZHENG Wei-hong, XU Wei-hua, YANG Cheng-zhong. Development of EAS RF tag quality online detection sensor. J4, 2012, 46(4): 719-724.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2012.04.021     OR     http://www.zjujournals.com/eng/Y2012/V46/I4/719


电子标签质量在线检测传感器的研制

为了检测电子标签的性能参数,研制基于互感耦合的双线圈检测传感器.在分析电子标签模型的基础上,建立传感器的物理模型和动态数学模型,分析传感器的频率响应特性；为了使标签检测区域的电磁场分布尽量均匀,且便于标签在线连续检测,提出双线圈的平行结构.在电路参数仿真分析基础上,进一步完成传感器线圈匝数和空间结构参数对输出响应灵敏度影响的测试,从而确定传感器的各个参数.测试结果表明,该传感器的检测精度高,性能稳定,响应速度快,能够很好地满足电子标签性能参数在线检测的要求.

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