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Multi-label anti-collision guiding identification method for RFID system

An identification method and anti-collision technology, applied in the field of RFID radio frequency identification

Inactive Publication Date: 2012-09-12
HUAZHONG NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the binary anti-collision method is that the number of bits in each query is the same as that of the label, and the query is repeated, so its recognition efficiency is very low
The dynamic binary anti-collision method reduces the amount of communication in the recognition process, but does not reduce the number of queries, so its recognition efficiency is not high

Method used

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  • Multi-label anti-collision guiding identification method for RFID system
  • Multi-label anti-collision guiding identification method for RFID system

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Embodiment Construction

[0034] The following is a detailed description in conjunction with the drawings and embodiments:

[0035] 1. System

[0036] 1. Overall

[0037] Such as figure 1 , The RFID system 10 includes a data processing unit 11, a reader 12, an antenna 13 and an electronic tag 14;

[0038] The connection relationship is:

[0039] The data processing unit 11 is connected to the reader 12 through a network. The reader 12 transmits radio frequency signals through its antenna 13, and the electronic tag 14 receives the radio frequency signals and responds to instructions of the reader 12 as required.

[0040] Its working principle is:

[0041] An RFID system 10 includes a data processing unit 11 for background processing, a reader 12, and a tag 14. The reader 12 transmits electromagnetic waves through the antenna 13, and the electronic tag 14 responds to the request of the reader 12 and sends information to the reader 12; If two tags respond at the same time, a collision occurs.

[0042] 2. Fun...

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Abstract

The invention, which relates to the radio frequency identification (RFID) field in the internet of things, discloses a multi-label anti-collision guiding identification method for an RFID system. The method mainly comprises the following steps that: a reader sends a query command, all labels return whole label numbers and the reader receives data; after the reader determines that there is collision, a binary tree is obtained by splitting at a highest collision bit, wherein a left sub-tree branch is 0 and a right sub-tree branch is 1, and the reader issues a query instruction again and a query sequence is realized based on a guiding mode; and according to the guide mode, a branch with fewest collision bits is searched first. According to the invention, backtracking searching of a dynamic binary identification method can be avoided and the number of times for query is reduced; identification efficiency of a reader on multiple labels is substantially improved; and the provided method is suitable for rapid identification of the multiple electronic labels by the reader in an RFID system.

Description

Technical field [0001] The invention involves the field of RFID radio frequency identification in the Internet of Things, especially a multi -label anti -collision guidance method for the RFID system. Background technique [0002] The Internet of Things is an important part of the new generation of information technology, and its English name is "The Internet of Things".As the name suggests, "the Internet of Things is the Internet connected by things."This has two meanings: first, the core and foundation of the Internet of Things are still the Internet, which is an extension and expansion network based on the Internet; second, its user end extension and extension to any items and items are used to conduct information for information to conduct information for information.Exchange and communication.Therefore, the definition of the Internet of Things is to connect any item to the Internet with information sensing devices such as RFID, infrared sensors, global positioning systems, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00
Inventor 郭亚军郭奕旻
Owner HUAZHONG NORMAL UNIV
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