US 12,086,677 B2 · Radio frequency identification method and reader

Abstract

A radio frequency identification method and a reader, the reader comprises a camera, a display screen, a distance sensor, an antenna unit and a processor, the camera is configured to collect an image of a target electronic tag, and the display screen is configured to display an image of the target electronic tag, the distance sensor is configured to measure the distance d between the target electronic tag and the reader, and the antenna unit is configured to receive a radio frequency signal emitted by the target electronic tag. When the antenna unit only receives a radio frequency signal transmitted by one electronic tag, the reader reads the electronic tag; when the antenna unit receives radio frequency signals transmitted by a plurality of electronic tags, the processor filters out the target electronic tag according to the matching degree between the distance and a phase value of the radio frequency signal.

Claims20

Dependent claims

A reader, comprising:

a laser unit, an antenna unit and a processor, wherein the laser unit is configured to emit an aiming light spot to aim at a target electronic tag, and to measure a distance between the target electronic tag and the reader, and the antenna unit is configured to receive a radio frequency emitted by the target electronic tag, when the antenna unit only receives a radio frequency signal transmitted by one electronic tag, the reader reads the electronic tag;
when the antenna unit receives radio frequency signals transmitted by a plurality of electronic tags, the processor filters out the target electronic tag among the plurality of electronic tags according to the matching degree between the distance d measured by the laser unit and the phase values of the radio frequency signals received by the antenna unit.

A reader, comprising:

an aiming unit, a distance sensor, an antenna unit and a processor, the aiming unit is configured to aim at a target electronic tag, the distance sensor is configured to measure a distance between the target electronic tag and the reader, and the antenna unit is configured to receive a radio frequency signal transmitted by the target electronic tag, when the antenna unit only receives a radio frequency signal transmitted by one electronic tag, the reader reads the electronic tag;
when the antenna unit receives radio frequency signals transmitted by a plurality of electronic tags, the processor filters out the target electronic tag among the plurality of electronic tags according to the matching degree between the distance measured by the distance sensor and the phase values of the radio frequency signals received by the antenna unit.

A radio frequency identification method, comprising:

aim at a target electronic tag;
measure a distance between the target electronic tag and a reader;
receive a radio frequency signal transmitted by an electronic tag, when only a radio frequency signal of one electronic tag is received, the electronic tag is read;
when the radio frequency signals of a plurality of electronic tags are received, match phase values of the radio frequency signals of the plurality of electronic tags with the distance, and filter out the target electronic tag.

1 more element

Dependencies are inferred from the claim text.

Radio frequency identification method and reader

Life of this patent

Radio frequency identification method and reader

Life of this patent

Abstract

Claims20