Antenna rotation method and device for a multi-antenna RFID system

A multi-antenna and antenna technology, applied in the field of RFID systems, can solve problems such as low card reading efficiency, and achieve the effect of improving card reading efficiency and increasing use time

Active Publication Date: 2018-01-23
INVENGO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an antenna rotation method and device for a multi-antenna RFID system with high card reading efficiency in view of the above-mentioned defects of low card reading efficiency in the prior art

Method used

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  • Antenna rotation method and device for a multi-antenna RFID system
  • Antenna rotation method and device for a multi-antenna RFID system

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Embodiment Construction

[0027] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0028] Such as figure 1 As shown, in the antenna rotation method and device embodiment of the multi-antenna RFID system of the present invention, the method includes the following steps:

[0029] Step S11 Connect the standard load and the antenna to be tested respectively, send a pure carrier, and obtain the voltage value of the isolation terminal of the coupler respectively: In this embodiment, the multi-antenna RFID system includes a card reader, and the card reader includes multiple antennas, These antennas are respectively connected to the antenna switch unit. The antenna switch unit is a controlled single-pole multi-throw switch. The input switch terminal is connected to the straight-through terminal of the coupler. The carrier signal is output to the switch terminal connected to the input terminal of the single-pole multi-throw switch through its ...

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Abstract

The invention relates to an antenna alternation method of a multi-antenna RFID system. The method includes the following steps: by connecting a standard load and an antenna to be tested to a direct connection end of a coupler, and sending a pure carrier wave of set power P when the standard load and the antenna to be tested are connected, obtaining a signal voltage on an isolation end and obtaining reflectivity of the antenna to be tested according to the signal voltage; according to the obtained reflectivity of the antenna to be tested, obtaining connecting time for connecting the antenna to be tested this time; and after carrying out connection with the antenna to be tested and maintaining the obtained connecting time, executing the abovementioned steps for the next switched antenna. The invention also relates to a device for realizing the abovementioned method. The antenna alternation method and device of the multi-antenna RFID system have the beneficial effect of improving card reading efficiency of the system.

Description

technical field [0001] The present invention relates to an RFID system, more specifically, to a method and device for antenna rotation of a multi-antenna RFID system. Background technique [0002] With the rapid development of radio frequency identification technology, multi-antenna RFID systems have been widely used due to their faster and more accurate reading capabilities. Multi-antenna RFID systems are widely used in security access control, logistics, and transportation. Generally speaking, a multi-antenna RFID system refers to a system that is equipped with multiple antennas on its card reader and sends or receives electromagnetic waves through these antennas in turn during the card reading process; in this system, the call or use of the antenna It determines the working efficiency of the multi-antenna RFID system. Common multi-antenna systems work in polling mode, that is, at the beginning of card reading, each antenna works for a fixed period of time, then switches ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/00
Inventor 刘春江段璞黄新利夏立军
Owner INVENGO INFORMATION TECH
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