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

An identification method and anti-collision technology, which is applied in the field of RFID radio frequency identification, can solve the problems of not reducing the number of queries, low recognition efficiency, and low recognition efficiency, and achieve the effect of reducing the number of queries, improving recognition efficiency, and avoiding backtracking searches

Inactive Publication Date: 2014-04-16
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

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] Below in conjunction with accompanying drawing and embodiment describe in detail:

[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] Its connection relationship is:

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

[0040] Its working principle is:

[0041] An RFID system 10 comprises a data processing unit 11, a reader 12 and a tag 14 for background processing, the reader 12 emits electromagnetic waves through an 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. Funct...

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PUM

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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 relates to the field of RFID radio frequency identification in the Internet of Things, in particular to a multi-label anti-collision guided identification method used in 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 of things connected." This has two meanings: first, the core and foundation of the Internet of Things is still the Internet, which is an extended and expanded network based on the Internet; exchange and communication. Therefore, the definition of the Internet of Things is to connect any item to the Internet for information exchange and communication through radio frequency identification (RFID), infrared sensors, global positioning systems, laser scanners and other information sensing devices according to agreed protocols....

Claims

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Application Information

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IPC IPC(8): G06K7/00
Inventor 郭亚军郭奕旻
Owner HUAZHONG NORMAL UNIV
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