Metal article electronic tag identification method based on ultrahigh frequency RFID technology

Abstract

The invention relates to a metal article electronic tag identification method based on an ultrahigh frequency RFID technology. The metal article electronic tag identification method belongs to the technical field of electronic tag identification. According to the metal article electronic tag identification method, RF power of a reader-writer enters a metal article by means of a transmission line structure, two electrodes in the transmission line structure are in direct contact with both ends of the metal article respectively, the transmission line structure and the metal article form a conductor loop, and a conduction current is generated on the metal article. The metal article electronic tag identification method adopts a combined structure of an inductor and an ultrahigh frequency RFID chip. The design purpose of the inductor is to counteract inductive reactance of the inductor presented on the metal article with characteristic input capacitive reactance of the ultrahigh frequency RFID chip, so as to achieve the optimal matching effect; the identification accuracy rate is high, thereby avoiding the problem of misreading and omitted reading; and the electronic tag is designed to be thin in thickness, small in size and low in cost, thereby satisfying the design requirements of modern electronic tags.

Description

technical field [0001] The invention relates to a metal object electronic tag identification method based on ultra-high frequency RFID technology, and belongs to the technical field of electronic tag identification. Background technique [0002] RFID (radio frequency identification: radio frequency identification) is a non-contact automatic identification technology. It automatically identifies the target object and obtains relevant data through radio frequency signals. The identification work does not require manual intervention. It is a wireless version of the barcode; it is a communication technology. , can identify specific targets and read and write related data through radio signals, without the need to establish mechanical or optical contact between the identification system and specific targets. [0003] The basic working method of UHF radio frequency identification (RFID) technology is that the identification device (commonly referred to as a reader) radiates an ele...

AI Technical Summary

Problems solved by technology

At the same time, many applications do not allow the use of large or costly electronic tags; therefore, the existing RFID electronic tag design technology for two metal objects cannot meet the actual needs of these applications

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