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

Multiple electronic label counting method

A multi-electronic and tag technology, applied in the field of radio frequency identification, can solve the problem of low efficiency of multi-electronic tag inventory methods, and achieve the effect of improving tag identification efficiency

Inactive Publication Date: 2009-08-19
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF0 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem of low efficiency of the existing multi-electronic tag counting method, and c

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
  • Multiple electronic label counting method
  • Multiple electronic label counting method
  • Multiple electronic label counting method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0033] Utilize matalab / simulink to set up platform and carry out simulation under the situation that label number is equal to 50 to the counting method of a kind of many electronic labels that the present invention proposes, concrete operation steps are as follows:

[0034] Step 1: In the first time slot of the first frame time slot, the reader sends the counting command Query, which contains the initial value of Q 3; at the same time, set the frame time slot count value to the frame length of 8, and clear the collision count value n c and correctly received count value n r , waiting for the tag to reply;

[0035] Step 2: The reader judges according to the reply information of the tag in the next time slot. If the reply information is invalid, the collision count value is increased by 1; if the reply information is valid, the tag information is retained, and the correct reception count value is increased by 1;

[0036] Step 3: Decrease the time slot count value by 1, and jud...

Embodiment approach 1

[0047] Use matalab / simulink to build a platform and simulate the label estimation algorithm (when the number of labels is equal to 50, the specific operation steps are as follows:

[0048] (1) The initial value=3 of setting Q, Qfp=3; The value of time slot counter=2 Q , n c =0,n r = 0;

[0049] (2) The reader judges according to the reply information of the tag in the next time slot. If the reply information is invalid, the collision counter value is increased by 1; if the reply information is valid, the tag information is retained, and the correct reception count value is increased by 1;

[0050] (3) Subtract 1 from the time slot count value, and judge whether the time slot count value is zero. If it is not zero, the reader sends a Queryrep command and proceeds to step (2); if it is zero, then judges the collision occurrence count value Whether it is zero, if the collision occurrence count value is zero, then the counting cycle ends; if the collision occurrence count value...

Embodiment approach 2

[0053] Use matalab / simulink to build a platform and simulate the random frame time slot algorithm when the number of tags is equal to 50. The specific operation steps are as follows:

[0054] (1) The initial value=3 of setting Q, Qfp=3; The value of time slot counter=2 Q , n c =0,n r = 0;

[0055] (2) The reader judges according to the reply information of the tag in the next time slot. If the reply information is invalid, the collision counter value is increased by 1; if the reply information is valid, the tag information is retained, and the correct reception count value is increased by 1;

[0056] (3) Subtract 1 from the time slot count value, judge whether the time slot count value is zero, if not zero, then the reader adjusts the Q value according to the random frame time slot algorithm, sends the Queryrep or QueryAjust instruction simultaneously, and turns to the step ( 2); if it is zero, then judge whether the collision occurrence count value is zero, if the collisio...

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

A method for sorting and counting polyelectronic tags belongs to the RFID technical field and relates to the identical technique of the radio-frequency electronic tag. The invention aims at solving the problem that the existing method for sorting and counting polyelectronic tags has low efficiency, and carries out advantages complementation by combining a tag number estimation algorithm and a dynamic and random frame time slot algorithm in an ultrahighfrequency distant automatic recognition system. In a first frame time slot, the number value of the residual tag number to be inventoried is estimated according to the tag number estimation algorithm, thereby determining the optimal Q value adopted by the next frame time slot (the invention is defined as a macro-adjustment of the Q value); and after a second frame time slot and the time slots after the second frame time slot, a random frame time slot algorithm with variable c parameter is used for adjusting the Q value (the invention is defined as a micro-adjustment of the Q value). Compared with the prior art, the invention can lead the radio-frequency recognition system to read a plurality of tags at high speed, thereby greatly raising the tag sorting and counting (or identification) efficiency.

Description

technical field [0001] The invention belongs to the technical field of radio frequency identification (RFID), and relates to the identification technology of radio frequency electronic tags, in particular to a method for counting (identifying) multiple electronic tags in an ultra-high frequency long-distance automatic identification system. Background technique [0002] In the UHF long-distance automatic identification system used in the field of wireless communication, EPC GEN2 (second-generation electronic article encoding) reader has begun to be applied. In the design of EPC GEN2 reader, the tag anti-collision algorithm in multi-electronic counting is an important link. The multi-label anti-collision algorithm of EPC GEN2 mainly has two reference indicators: reliability and efficiency. In the whole anti-collision algorithm, the determination of Q value is the most critical part. Among the existing published algorithms, there are two common types of algorithms: the first...

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): G06K7/00
Inventor 文光俊江建
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA