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Expansion adapter for ultrahigh-frequency FRID reader-writer

A technology of readers and adapters, which is applied in the direction of instruments, computer parts, and cooperative devices, etc., can solve problems such as poor use effect, weak interface function, and low power, and achieve the effect of improving quality

Inactive Publication Date: 2014-05-14
上海阿法迪智能数字科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there are many types of RFID readers, but their power is often small and the use effect is poor; and the interface function provided is weak, which cannot meet the needs of actual projects

Method used

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  • Expansion adapter for ultrahigh-frequency FRID reader-writer

Examples

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0024] refer to figure 1 , the UHF RFID reader extension adapter of this embodiment includes: a reader 11 , a power amplifier 12 , an antenna switch 13 , multiple antennas 14 , a main controller 15 and an external interface 16 .

[0025] Wherein, the reader-writer 11 may be various types of RFID reader-writers in the prior art, such as fixed or mobile RFID reader-writers.

[0026] The power amplifier 12 is connected with the reader 11 to amplify the transmitted signal power. As a non-limiting example, the power amplifier 12 may include a class AB amplifier and an LC parallel resonant circuit connected to the class AB amplifier. Among them, the class AB amplifier can realize the secondary amplification of the output power of the reader with small and medium power, and...

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PUM

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Abstract

The invention provides an expansion adapter for an ultrahigh-frequency FRID reader-writer. The expansion adapter for an ultrahigh-frequency FRID reader-writer comprises a reader-writer, a power amplifier connected with the reader-writer, an antenna switching device connected with the power amplifier, multiple antennas connected with the antenna switching device, and a main controller, wherein the scope of the frequency range of the multiple antennas is between 902MHz to 928 MHz; the main controller is connected with the reader-writer, the power amplifier, and the antenna switching device and is used for performing information interaction with the reader-writer, adjusting the amplification coefficient of the power amplifier, and controlling the antenna switching device to switch among the multiple antennas. The expansion adapter for an ultrahigh-frequency FRID reader-writer is capable of controlling the transmitting power of the antennas and providing a uniform reader-writer interface to external devices.

Description

technical field [0001] The invention relates to an extension adapter for a UHF RFID reader-writer. Background technique [0002] Radio Frequency Identification (RFID, Radio Frequency Identification) technology, also known as electronic tags and radio frequency identification, can identify specific targets and read and write related data through wireless signals. RFID technology has been widely used in various fields, such as libraries, access control systems, food safety traceability, etc. [0003] The RFID reader communicates wirelessly with the RFID electronic tag through the antenna, and can read or write the tag identification code and memory data. RFID readers can be divided into low-frequency, high-frequency, ultra-high-frequency, etc. according to the frequency band, and can be divided into mobile and fixed according to the degree of portability. [0004] In the prior art, there are many types of RFID readers, but their power is often low, and the use effect is poor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K17/00
Inventor 陈禹张磊
Owner 上海阿法迪智能数字科技股份有限公司
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