Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Radio frequency identification label number estimating method capable of meeting EPC C1G2 standard and based on time slot states

A technology of EPCC1G2 and radio frequency identification tags, which is applied in the field of radio frequency identification tag quantity estimation based on time slot status, can solve the problems of low estimation accuracy and long estimation time of tag quantity, and achieve high estimation accuracy, short tag estimation time, Effects that are easy to implement

Inactive Publication Date: 2015-06-03
GUANGDONG UNIV OF TECH
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the disadvantages of the existing RFID system, such as too long time to estimate the number of tags, being unable to be used in occasions with a large number of tags, and low estimation accuracy, the present invention provides a method for estimating the number of tags based on the time slot state in compliance with the EPC C1G2 standard

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
  • Radio frequency identification label number estimating method capable of meeting EPC C1G2 standard and based on time slot states
  • Radio frequency identification label number estimating method capable of meeting EPC C1G2 standard and based on time slot states
  • Radio frequency identification label number estimating method capable of meeting EPC C1G2 standard and based on time slot states

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Assume that a certain area is uniquely covered by an RFID reader, and there are n tags around it.

[0037] (1) First, the reader broadcasts the frame length F and a randomly generated 16-bit binary number RN16 to the tag by calling the R command. After receiving the command, the tag uses F, RN16 and its own ID as parameters to call The random function in generates self-slots F of labels i , Fi ∈[1,F], and save it in the label slot register. Next, the reader starts to identify the current frame, and sends the L command to broadcast the time slot polling signal to the tag. After receiving the command, the tag will decrement the value in the tag time slot register by 1, if and only if the value is 0 The tag is allowed to respond to the reader in the current time slot, the response signal is a newly generated 16-bit random binary...

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 a radio frequency identification label number estimating method capable of meeting the EPC C1G2 standard and based on time slot states. The method comprises a time slot state counting stage and a label number estimating stage. In the time slot state counting stage, a reader-writer can count the number of vacant time slots and the number of non-vacant time slots through a one-frame identifying process, and the average length of one bit field can be calculated out. In the label number estimating stage, and the optimal label number estimating value meeting the error accuracy requirement can be searched by the average length, calculated out from real measurement, of one bit field through the one-to-one correspondence of the length of one bit field, the frame length of one bit field and the label number. The method can meet the EPC C1G2 standard, prevents label structures from being changed, is shorter in estimating time, is higher in estimating accuracy and is suitable for occasions with larger label numbers.

Description

Technical field [0001] The invention relates to a method for estimating the number of tags applied in a radio frequency identification (RFID) system, in particular to a method for estimating the number of radio frequency identification tags based on the time slot state and conforming to the EPC C1G2 standard applicable to the RFID system. Background technique [0002] In recent years, radio frequency identification (RFID) technology has increasingly appeared in our daily life. Compared with the traditional two-dimensional barcode and magnetic stripe technology, RFID technology has significant advantages such as visual recognition outside the boundary, work in harsh environments, not easy to be polluted and damaged, and a large amount of recorded information. Therefore, it is widely used in ticket anti-counterfeiting and production automation. , access control, road toll collection, parking lot management, identification, cargo tracking and other fields. Tags can be divided ...

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): G06K17/00
Inventor 杨健蔡庆玲王永华余松森方芳詹宜巨
Owner GUANGDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com