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Radio frequency identification method and reader

A technology of readers and radio frequency signals, which is applied in the field of radio frequency identification methods and readers, and can solve problems such as the inability to accurately read and locate electronic tags

Inactive Publication Date: 2021-10-26
SHENZHEN IDATA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

UHF readers can simultaneously identify and read the contents of multiple tags at a long distance. However, these characteristics of UHF readers make it impossible to accurately read and locate a single or a small number of electronic tags in multiple electronic tags. Label

Method used

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  • Radio frequency identification method and reader
  • Radio frequency identification method and reader
  • Radio frequency identification method and reader

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Embodiment Construction

[0033] In order to facilitate a better understanding of the purpose, structure, features, and effects of the present application, the present application will be further described in conjunction with the accompanying drawings and specific implementation methods.

[0034] The process of reading the electronic tag by the existing reader is relatively blind. When the electronic tag is within the reading range of the reader, the reader can read the electronic tag, and does not care about the specific position of the electronic tag; Moreover, since the working frequency band of the reader to read the electronic tag is usually in the megahertz, the attenuation is slow, the electromagnetic wave emitted by the reader can also activate the electronic tag after reflection, and the electromagnetic wave emitted by the electronic tag may also be received by the reader after reflection , That is to say, electronic tags that are not targeted by the reader are also easy to be read by the reade...

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PUM

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Abstract

The invention provides a radio frequency identification system and a reader, the reader comprises a camera, a display screen, a distance sensor, an antenna unit and a processor, the camera is used for collecting an image of a target electronic tag, the display screen is used for displaying the image of the target electronic tag, the distance sensor is used for measuring the distance d between a target electronic tag and the reader, the antenna unit is used for receiving a radio frequency signal transmitted by the target electronic tag, and when the antenna unit only receives the radio frequency signal transmitted by one electronic tag, the reader reads the electronic tag; when the antenna unit receives radio frequency signals emitted by a plurality of electronic tags, the processor screens out the target electronic tag according to the matching degree of the distance d measured by the laser unit and the phase value of the radio frequency signals received by the antenna unit.

Description

technical field [0001] The present application relates to a radio frequency identification method and a reader, in particular to a radio frequency identification method and a reader of a target electronic tag. Background technique: [0002] Radio frequency identification technology (Radio Frequency Identification, RFID) is a kind of automatic identification technology, which performs non-contact two-way data communication through radio frequency, and uses radio frequency to read and write recording media (electronic tags or radio frequency cards), thereby To achieve the purpose of identifying targets and data exchange. A complete RFID system consists of three parts: reader, tag and data management system. Its working principle is that the reader emits a specific frequency of radio wave energy to drive the circuit to convert the internal At this time, the reader will receive and interpret the data sequentially and send them to the data management system for corresponding pro...

Claims

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Application Information

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IPC IPC(8): G06K7/10
CPCG06K7/10099
Inventor 申世安张立静黄毅然
Owner SHENZHEN IDATA TECH CO LTD
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