Check patentability & draft patents in minutes with Patsnap Eureka AI!

RFID-based indoor article positioning method and system

An item and precise positioning technology, which is applied in the field of precise positioning of indoor items based on RFID, can solve the problems of being easily affected by the environment and the positioning accuracy is not high, and achieve the effect of enhancing positioning accuracy, simple realization and easy search.

Inactive Publication Date: 2017-11-17
SHANDONG NORMAL UNIV
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the problem that the received signal strength indicator (RSSI) is easily affected by the environment, and only relying on RSSI for positioning will lead to low positioning accuracy, the present invention adopts the method of multiple regression analysis to eliminate the influence of the environment on the RSSI value. Influence, the regression coefficient vector of all anchor nodes is obtained through regression analysis, and the vector is used to estimate the signal strength value received by the reference sensor node, and the mapping relationship between the spatial position point and each anchor node is established, and finally the reference sensor is determined according to the position coordinate space node coordinates

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
  • RFID-based indoor article positioning method and system
  • RFID-based indoor article positioning method and system
  • RFID-based indoor article positioning method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a method for accurately locating indoor items based on RFID, such as figure 1 As shown, the item to be positioned is affixed with an RFID tag, comprising the following steps:

[0047] Step 1: Arrange multiple anchor nodes with known positions and multiple reference sensor nodes with reader modules indoors, collect the RSSI strength values ​​received by the multiple reference sensor nodes from the multiple anchor nodes as samples Set, based on the sample set, use a regression analysis algorithm to locate the reference sensor node;

[0048] Specifically, p anchor nodes with known positions and m reference sensor nodes with unknown positions are arranged indoors, assuming that there are currently t tags to be tested indoors.

[0049] Positioning the reference sensor node based on the regression analysis algorithm in the step 1 specifically includes:

[0050] Step 1.1: In the offline training phase, one of the multiple reference sensor nodes is se...

Embodiment 2

[0105]This embodiment provides a system for precise positioning of indoor items, including an RFID tag on the item to be located, a reference sensor node with a reader module, a wireless sensor network, and a computing device, which includes a memory, A processor and a computer program stored on a memory and operable on the processor, wherein the processor implements the following steps when executing the program:

[0106] Step 1: Arrange multiple anchor nodes with known positions and multiple reference sensor nodes with reader modules indoors, collect the RSSI strength values ​​received by the multiple reference sensor nodes from the multiple anchor nodes as samples Set, based on the sample set, use a regression analysis algorithm to locate the reference sensor node;

[0107] Step 2: Construct the Euler tetrahedron model with the tag to be tested and the three reference sensor nodes as vertices, and calculate the tag to be tested according to the established Euler tetrahedron...

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 discloses an RFID-based indoor article positioning method and a system. An RFID tag is attached to a to-be-positioned article. The method comprises the following steps of at a plurality of indoor known positions, arranging a plurality of anchor nodes and a plurality of reference sensor nodes with reader modules; collecting RSSI intensity values received by the plurality of reference sensor nodes from the plurality of anchor nodes as a sample set; based on the sample set, positioning the reference sensor nodes by adopting the regression analysis algorithm; taking a to-be-measured tag and three reference sensor nodes as top points to construct an Euler tetrahedron model; calculating the position coordinates of the to-be-measured tag based on the position information of the three reference sensor nodes; after the position coordinates of the to-be-measured tag is obtained, determining the floor of the to-be-measured tag by adopting the k-means clustering algorithm through referring to the floor parameters of the anchor nodes. According to the positioning method, not only the positioning precision is improved, but also the positioning result is more accurate.

Description

technical field [0001] The invention relates to the field of wireless sensor networks, and is combined with RFID technology, in particular to an RFID-based precise positioning method for indoor objects. Background technique [0002] With the increase of data services and the popularization of multimedia services, ordinary positioning technology can no longer meet people's daily needs, and the demand of various groups for indoor positioning services increases accordingly. In recent years, indoor positioning technology based on wireless sensor networks, radio frequency identification technology, ultra-wideband, and infrared technology has developed rapidly. In particular, radio frequency identification technology has become the main technology for indoor positioning because of its advantages of fast reading speed, non-contact identification, large storage capacity, wide transmission range, and low cost. Due to the complex indoor environment, multipath propagation, random nois...

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
IPC IPC(8): H04W4/02H04W4/04H04W64/00H04B5/00
CPCH04W4/025H04W64/003H04B5/77
Inventor 田杰孙希蓓刘雪陆佃杰郭秉义张宇昂
Owner SHANDONG NORMAL UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com