基于UHF RFID技术的室内定位系统设计  

Indoor Positioning System Based on UHF RFID Technology

作　　者：沈郭浩 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《单片机与嵌入式系统应用》2015年第11期40-43,共4页Microcontrollers & Embedded Systems

摘　　要：室内传统的定位方法(如GPS)无法实现准确定位,而UHF RFID标签定位因其反应快、设备简单、体积小等优点成为人们的重点研究目标。为解决RFID基于接收信号强度测距法定位精度不高的问题,使用美国Impinj公司Indy R1000射频开发板和R420射频阅读器,通过读取信号能量和载波相位变化值,获得标签与阅读器天线之间的距离信息,通过算法优化最终实现精确定位。In the indoor environment,the traditional positioning method such as GPS cafft achieve the satisfied accuracy. Meanwhile the UHF RFID label positioning becomes primary research target for it＇s unique adventures such as fast response,simple structure, small in size etc. In order to solve the problem of the positioning accuracy o{ RFID, the design uses the Indy R1000 RF development board and R420 RF reader which are made by Impinj company to calculate the distance between the label and the reader＇s antennas by reading the signal energy and the carrier phase change value. Finally the accuracy localization of the result is achieved through optimization of the algorithm.

关 键 词：UHF RFID室内定位 RSSI INDY R1000 R420 

分 类 号：TP391.44[自动化与计算机技术—计算机应用技术] TN929.5[自动化与计算机技术—计算机科学与技术]