基于标签虚拟化的RFID室内RSSI无线定位算法  

RFID Indoor RSSI Wireless Location Algorithm Based on Tag Virtualization

作　　者：李川[1] 王荣海[1] 赵红军[1,2] LI Chuan;WANG Ronghai;ZHAO Hongjun(Department of Information Engineering,Mianyang Polytechnic,Mianyang Sichuan 621000,China;School of Information Engineering,Southwest University of Science and Technology,Mianyang Sichuan 621010,China)

机构地区：[1]绵阳职业技术学院信息工程系,四川绵阳621000 [2]西南科技大学信息工程学院,四川绵阳621010

出　　处：《电子器件》2020年第6期1403-1410,共8页Chinese Journal of Electron Devices

基　　金：四川省科技计划项目(2018JY0337)。

摘　　要：在发生地质灾害时,很难避免意外形成的密闭空间所带来的救援困难,而室内无线定位算法可保障该环境中的应急通讯和远程精准救援。结合标签虚拟化提出一种低成本射频识别室内无线精准定位方法,完成软硬件系统设计,并模拟室内空间环境完成算法测试。在分析射频识别工作机理和自由空间接收信号对数路径衰减模型基础上,采用插值方法结合阈值分割排除法获取虚拟参照标签的接收信号强度值。进而给出系统硬件架构和部分功能模块的软件设计。采用MATLAB 17.0设计仿真界面,在不同网状虚拟化密度和阅读器数目数的条件下,完成多组对比实验可知,方法不仅可获得较为精准的定位结果,而且系统设计成本低,有一定的工程实际应用价值。In the event of a geological disaster,it is difficult to avoid the rescue difficulties caused by the accidentally formed confined space,and the indoor wireless positioning algorithm can guarantee emergency communication and remote precision rescue in the environment.A low-cost radio frequency identification indoor wireless precision positioning method has been proposed based on the tag virtualization,the software and hardware system design is completed,and the indoor space environment is simulated to complete the algorithm test.Based on the analysis of the radio frequency identification working mechanism and the logarithmic path attenuation model of the free-space received signal,the interpolation signal method is combined with the threshold segmentation exclusion method to obtain the received signal strength value of the virtual reference tag.Furthermore,the software design of the system hardware architecture and some functional modules is given.Using MATLAB 17.0 design simulation interface,through the comparison experiments of multiple groups,the method can not only obtain more accurate positioning results under the condition of different mesh virtualization density and number of readers,but also the system design cost is low,and are exists the actual application value of the project.

关 键 词：射频识别 室内定位 阈值分割 精准 虚拟 

分 类 号：TM721[电气工程—电力系统及自动化]