Unlock instant, AI-driven research and patent intelligence for your innovation.

An indoor wireless positioning method based on rfid

A positioning method and indoor wireless technology, applied in the field of indoor wireless positioning based on RFID, can solve the problems of large positioning errors of edge nodes, achieve the effects of improving positioning accuracy, solving multipath problems, and good adaptability

Active Publication Date: 2019-11-19
XIAMEN UNIV TAN KAH KEE COLLEGE
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the purpose of the present invention is to propose a RFID-based indoor wireless positioning method to solve the problem of large edge node positioning errors, and at the same time improve the positioning accuracy of the overall node and solve the multipath problem, adapting to various environments better sex

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An indoor wireless positioning method based on rfid
  • An indoor wireless positioning method based on rfid
  • An indoor wireless positioning method based on rfid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0064] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0065] This embodiment provides an RFID-based indoor wireless positioning method.

[0066] This embodiment includes the following:

[0067] (1) The working environment of the algorithm.

[0068] This embodiment is essentially an improvement to the LANDMARC system, so the working environment refers to the settings of the LANDMARC system, as follows figure 1 shown. figure 1 It is just a special case of the application of this algorithm. In actual applications, N readers and M reference tags can be set according to different requirements, and K tags to be tested can be set. The reader and reference tags can also be placed at different positions, and the distance between the reference tags can be set to D ref . In this special example, there are 4 readers, 16 reference tags and 10 test tags. The 4 readers are distributed at four vertices, and the 16 re...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an indoor wireless positioning method based on RFID. The method includes the following steps: firstly acquiring the coordinates of reference labels, measuring RSSI values of each reader to the reference labels and a to-be-measured label, setting the RSSI values of the reference values to be RSSIrefs and the RSSI value of the to-be-measured label to be RSSItag; then for each reader, comparing the RSSI values of the reference label and the to-be-measured label, selecting 3 reference labels which is closest to the RSSI value of the to-be-measured label as candidate adjacent labels; then based on the number of appearance of each candidate adjacent label, selecting an adjacent label; and finally based on the selected adjacent label, computing the position of the to-be-measured label. According to the invention, the method reduces large errors in positioning edge nodes, increases positioning precision of the all nodes and addresses the multi-path problem, and is better applicable to all environments.

Description

technical field [0001] The invention relates to the field of wireless positioning, in particular to an RFID-based indoor wireless positioning method. Background technique [0002] With the popularization of smart phones and the Internet, the demand for Location Based Service (LBS) is getting stronger and stronger. In recent years, the rapid development and popularization of wireless local area network technology and wireless personal area network technology has provided more positioning technologies and methods for wireless positioning. The Wi-Fi technology in the wireless local area network is the most mainstream wireless communication technology used in daily work and life. Since the coverage of Wi-Fi hotspots is getting larger and larger, it is estimated based on the geographical location of Wi-Fi hotspots. It has laid a good foundation for early application. The positioning accuracy of the Wi-Fi-based positioning system can reach several meters to tens of meters, and t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/06
CPCG01S5/06
Inventor 曾党泉
Owner XIAMEN UNIV TAN KAH KEE COLLEGE