无线干扰对RFID多标签识别过程影响的研究
发布时间：2018-07-28 18:37
【摘要】：射频识别(Radio Frequency Identification)是物联网中的核心部分,是实现感知网络的关键技术。近年来随着互联网、移动互联网的快速进步和普及,RFID相关应用也得到了前所未有的发展,但是随着RFID系统的大规模部署以及像WLAN、WPAN(Bluetooth、ZigBee等)这样无线网络的密集应用的出现,势必会对现有的RFID系统产生一定的无线干扰。本论文针对RFID系统中存在的无线干扰问题进行了分析,采用数学建模理论分析、实验测量、仿真验证相结合的研究方法。本文的主要内容以及创新之处如下:第一,分析并研究了 RFID系统大规模部署场景下存在的无线干扰,建立了基于统计分布的干扰模型,创新性地提出了 IR参数,为定量分析无线干扰下RFID系统的性能提供了理论参考。针对于FCC和CEPT两大国际标准,又进一步修改了干扰模型,并成功用于多RFID读写器场景下容量的估计。第二、分析了当前基于EPC协议的多标签识别算法,在选择Q值算法和Poisson算法的基础上提出了一种新型的多标签识别算法,提升了 RFID系统的多标签识别效率,特别是在大规模标签识别中,新算法更具优越性。第三、分析了无线干扰源下RFID系统性能表现,对以往研究在该问题上的模糊性进行了补充和研究,通过对无源标签芯片电路以及后向散射链路进行分析,定量的给出了无线干扰模型。第四、对RFID系统与其他无线通信系统的干扰问题进行了详细的分析,对RFID与Bluetooth以及WLAN的干扰问题进行了建模分析,并通过OPNET和MATLAB仿真与理论分析值对比验证了模型。本文研究了 RFID系统存在的无线干扰问题并结合关键技术总结并提出一些有意义的结论,补充了 RFID干扰问题研究的不足,为进一步研究RFID系统可能存在的干扰问题提供了理论参考。
[Abstract]:Radio frequency identification (Radio Frequency Identification) is the core part of the Internet of things and the key technology to realize the perceptual network. In recent years, with the rapid progress of the Internet, mobile Internet and the popularity of RFID applications have been unprecedented development, but with the large-scale deployment of RFID systems and the emergence of wireless networks such as WLAN WPAN (Bluetooth ZigBee, etc.), It is bound to have certain wireless interference to the existing RFID system. In this paper, the problem of wireless interference in RFID system is analyzed, and the research method of mathematical modeling theory, experimental measurement and simulation verification is adopted. The main contents and innovations of this paper are as follows: first, the wireless interference in large-scale deployment of RFID system is analyzed and studied, and the interference model based on statistical distribution is established, and the IR parameters are proposed innovatively. It provides a theoretical reference for quantitative analysis of the performance of RFID system under wireless interference. Aiming at the two international standards of FCC and CEPT, the interference model is further modified, and it is successfully used to estimate the capacity of multiple RFID reader scenarios. Secondly, this paper analyzes the current multi-label recognition algorithm based on EPC protocol, and proposes a new multi-label recognition algorithm based on Q-value algorithm and Poisson algorithm, which improves the efficiency of multi-label recognition in RFID system. Especially in large scale label recognition, the new algorithm has more advantages. Thirdly, the performance of RFID system under the wireless interference source is analyzed, and the fuzziness of the previous research is supplemented and studied. The passive tag chip circuit and the backscatter link are analyzed. The wireless interference model is given quantitatively. Fourthly, the interference problem between RFID system and other wireless communication systems is analyzed in detail, the interference problem between RFID, Bluetooth and WLAN is modeled and analyzed, and the model is verified by OPNET and MATLAB simulation and theoretical analysis. In this paper, the problem of wireless interference in RFID system is studied, and some meaningful conclusions are put forward in combination with the key technology, which complements the deficiency of the research on RFID interference problem. It provides a theoretical reference for the further study of the possible interference problems in RFID systems.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP391.44
本文编号：2151241
[Abstract]:Radio frequency identification (Radio Frequency Identification) is the core part of the Internet of things and the key technology to realize the perceptual network. In recent years, with the rapid progress of the Internet, mobile Internet and the popularity of RFID applications have been unprecedented development, but with the large-scale deployment of RFID systems and the emergence of wireless networks such as WLAN WPAN (Bluetooth ZigBee, etc.), It is bound to have certain wireless interference to the existing RFID system. In this paper, the problem of wireless interference in RFID system is analyzed, and the research method of mathematical modeling theory, experimental measurement and simulation verification is adopted. The main contents and innovations of this paper are as follows: first, the wireless interference in large-scale deployment of RFID system is analyzed and studied, and the interference model based on statistical distribution is established, and the IR parameters are proposed innovatively. It provides a theoretical reference for quantitative analysis of the performance of RFID system under wireless interference. Aiming at the two international standards of FCC and CEPT, the interference model is further modified, and it is successfully used to estimate the capacity of multiple RFID reader scenarios. Secondly, this paper analyzes the current multi-label recognition algorithm based on EPC protocol, and proposes a new multi-label recognition algorithm based on Q-value algorithm and Poisson algorithm, which improves the efficiency of multi-label recognition in RFID system. Especially in large scale label recognition, the new algorithm has more advantages. Thirdly, the performance of RFID system under the wireless interference source is analyzed, and the fuzziness of the previous research is supplemented and studied. The passive tag chip circuit and the backscatter link are analyzed. The wireless interference model is given quantitatively. Fourthly, the interference problem between RFID system and other wireless communication systems is analyzed in detail, the interference problem between RFID, Bluetooth and WLAN is modeled and analyzed, and the model is verified by OPNET and MATLAB simulation and theoretical analysis. In this paper, the problem of wireless interference in RFID system is studied, and some meaningful conclusions are put forward in combination with the key technology, which complements the deficiency of the research on RFID interference problem. It provides a theoretical reference for the further study of the possible interference problems in RFID systems.
【学位授予单位】：北京邮电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TP391.44
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