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

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....

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

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