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Radio frequency recognition system and its anticollision counting method

A radio frequency identification and anti-collision technology, applied in the field of communication, can solve the problems of label inventory time slot waste, etc., and achieve the effect of reducing inventory time, improving inventory efficiency, and overcoming waste

Active Publication Date: 2008-10-15
ZTE INTELLIGENT IOT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0057] The present invention aims to provide a radio frequency identification and its anti-collision counting method to solve the waste problem of tag counting time slots in the prior art

Method used

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  • Radio frequency recognition system and its anticollision counting method
  • Radio frequency recognition system and its anticollision counting method
  • Radio frequency recognition system and its anticollision counting method

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Embodiment Construction

[0077] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0078] image 3 It shows a flow chart of an anti-collision counting method for radio frequency identification according to an embodiment of the present invention, including the following steps;

[0079] Step S31, the reader sends an access command to the tag side, so that the tag whose counter value is 0 among the multiple tags replies;

[0080] Step S32, the reader receives the reply information of the tag within the specified time;

[0081] Step S33, if it is judged that the current time slot is an idle time slot, and the last time slot is an unrecognizable time slot of binary number splitting, then send a re-split command to the tag side to make the tag perform re-split in response to the access command;

[0082] Step S34, if it is judged that the current time slot is an identifiable time slot, or the current time slot is an idl...

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Abstract

The invention provides an anti-collision inventorying method used for radio frequency identification, comprising the following steps that: a reader sends an access command to the label side, thus allowing a plurality of labels with the counter value of 0 to reply information; the reader receives the replied information of the labels within the specified time, wherein, the anti-collision inventorying is carried out according to the received situation. The invention further provides a radio frequency identification system. The anti-collision inventorying method can effectively improve the inventorying efficiency of the labels.

Description

technical field [0001] The invention relates to the communication field, in particular to a radio frequency identification system and an anti-collision counting method thereof. Background technique [0002] In the application of RFID technology, usually one reader corresponds to multiple tags. When multiple electronic tags are connected to the reader at the same time, the responses of multiple electronic tags will collide, so the information in the tags cannot be correctly transmitted to the reader. Therefore, certain mechanisms need to be adopted to avoid collisions or reduce collisions. [0003] In the dynamic tree anti-collision algorithm, the method of dynamically adjusting the degree of label splitting is adopted to solve the collision problem. Each tag has a random number generator and a counter, and when the value of the counter is 0, the tag replies to the reader with a response. The reader sends an instruction to make all tags start to reply. After the tag receiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00
Inventor 周欢
Owner ZTE INTELLIGENT IOT TECH
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