An identification method, device and system for a radio frequency identification tag

Abstract

The embodiment of the invention discloses an identification method, device and system for a radio frequency identification tag. The method comprises: reading an RFID tag during a first RFID reading cycle; shutting down the reading process, the shutdown time being set according to the session duration of the RFID tag to be identified; reading during a second reading cycle Take the radio frequency identification tag; if the same radio frequency identification tag is continuously read in the first radio frequency identification reading cycle and the second reading cycle, it is determined that the radio frequency identification tag is identified. After applying the embodiments of the present invention, physical processing such as heating or lighting is performed on the RFID tag to shorten the session duration of the RFID tag, so that the RFID tag can be quickly powered down, and thus can be read in two consecutive RFID reading cycles. Two consecutive reads can be realized within two consecutive readings, so that the cross-read tags can be strictly filtered, and the reliability of the cross-read tags can be improved.

Description

technical field [0001] The present invention relates to the field of radio frequency identification (Radio Frequency Identification, RFID) technology, in particular to an identification method, device and system for radio frequency identification tags. Background technique [0002] RFID technology is a communication technology that can identify specific targets and read and write related data through radio signals without establishing mechanical or optical contact between the identification system and specific targets. Commonly used are low frequency (125k ~ 134.2K), high frequency ( HF), Ultra High Frequency (UHF) and other implementations. Compared with high-frequency RFID, UHF RFID has the advantages of wider reading range, faster reading speed, lower tag cost, and smaller reader and tag antennas, so that objects can be directly identified, and it also has the advantages of Possibility to track goods from delivery to assembly line. However, UHF RF signals are often plag...

AI Technical Summary

Problems solved by technology

However, these existing methods all utilize parameters related to RF signals to perform the filtering operation, and parameters related to RF signals are also generally susceptible to multipath propagation, so these existing methods cannot reliably filter cross-read tags

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