Design of RFID indoor positioning system based on phase difference ranging

LAN Wei-tao; ZHANG Wei-qiang; LUO Jian-yu; JIANG Jin-tao

doi:10.13873/J.1000-9787(2017)10-0085-04

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Design of RFID indoor positioning system based on phase difference ranging

更新时间：2025-09-11

- Design of RFID indoor positioning system based on phase difference ranging
- Vol. 36, Issue 10, Pages: 85-88+91(2017)
- 作者机构：
  
  宁波大学信息科学与工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2017)10-0085-04
  CLC： TP391.44
- Published：2017
- 稿件说明：
移动端阅览
[1]蓝威涛,张卫强,罗健宇,蒋金涛.基于相位差测距的RFID室内定位系统设计[J].传感器与微系统,2017,36(10):85-88+91.

LAN Wei-tao, ZHANG Wei-qiang, LUO Jian-yu, et al. Design of RFID indoor positioning system based on phase difference ranging[J]. 2017, 36(10): 85-88+91.
[1]蓝威涛,张卫强,罗健宇,蒋金涛.基于相位差测距的RFID室内定位系统设计[J].传感器与微系统,2017,36(10):85-88+91. DOI： 10.13873/J.1000-9787(2017)10-0085-04.

LAN Wei-tao, ZHANG Wei-qiang, LUO Jian-yu, et al. Design of RFID indoor positioning system based on phase difference ranging[J]. 2017, 36(10): 85-88+91. DOI： 10.13873/J.1000-9787(2017)10-0085-04.

摘要

针对当前室内定位的广泛需求及传统室内定位技术的缺陷

设计了一种基于相位差测距的射频识别（RFID）室内定位系统。系统主要由RFID阅读器、电子标签、STM32模块组成

3个电子标签固定在特定位置作为信标节点

1个RFID阅读器作为移动节点发射与接收超高频信号

STM32模块根据测得的相位差计算相应的距离

并利用改进后的三边定位法

确定阅读器的位置。在实验室对进行了设计并测试

结果表明:该系统能很好地完成定位功能

定位精度达到厘米（cm）级

可满足众多领域的应用需求。

Abstract

In order to overcome shortcomings of traditional indoor positioning technology and meet a large number of the current indoor positioning needs

design a kind of radio frequency identification（ RFID） indoor positioning system based on phase difference ranging

which is mainly composed of a RFID reader

electronic tags and a microprocessor module. 3 electronic tags are fixed at particular positions as beacon nodes

and a RFID reader can transmit and receive ultra high frequency signals as mobile node. The STM32 calculates the corresponding distance between two points according to the phase difference

and ultimately determines the location information of the reader through the improved trilateration localization algorithm. The system is designed and test in laboratory

the results show that the system can perfectly achieve the positioning function

and positioning precision reaches cm level

that can meet the application needs of many fields.

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references

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