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Method, device and system for calibrating transmit power flatness of rfid reader

A technology of transmitting power and calibration method, applied in the field of radio frequency identification, can solve the problems of cumbersome operation and long time-consuming, and achieve the effect of simple operation and short time-consuming

Active Publication Date: 2021-04-06
INVENGO INFORMATION TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a short time-consuming and easy-to-operate calibration method, device, and system

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  • Method, device and system for calibrating transmit power flatness of rfid reader
  • Method, device and system for calibrating transmit power flatness of rfid reader
  • Method, device and system for calibrating transmit power flatness of rfid reader

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Embodiment Construction

[0036] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0037] Such as figure 1 As shown, in the calibration method, device and system embodiment of a kind of RFID reader-writer transmission power flatness of the present invention, the method comprises the following steps:

[0038]Step S11 obtains the frequency band reference register value, and each frequency point controls the emission of radio frequency according to the reference register value and records the radio frequency power value: when calibrating the transmit power flatness of the RFID reader-writer or calibrating the transmit power of other radio equipment, The most basic and time-consuming method is point-by-point calibration, that is, to calibrate each transmit frequency point in the working frequency band of the device one by one. Although this method is time-consuming, it is a method that cannot be avoided in some cases or in some cases. In...

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Abstract

The present invention relates to a method for calibrating the transmit power flatness of an RFID reader-writer, comprising the following steps: obtaining a reference register value for controlling the radio-frequency transmit power of the radio-frequency frequency point of the RFID reader-writer, so that the RFID reader-writer is at the Each transmit frequency point in the frequency band is controlled by the register value in turn to send out radio frequency signals; among the power values ​​obtained by comparison, whether the difference between the maximum value and the minimum value is greater than the set difference value, if not, judge the frequency band The flatness is qualified; if so, the entire transmitting frequency band is divided into N sub-frequency bands, and the above steps are carried out in each sub-frequency band until the flatness is qualified; if it is still unqualified, then increase the numerical value of N until N is equal to the frequency total number of points. The present invention also relates to a device and a system for realizing the above method. The method, device and system for calibrating the transmit power flatness of the RFID reader-writer according to the present invention have the following beneficial effects: the time-consuming is relatively short and the operation is relatively simple.

Description

technical field [0001] The present invention relates to the field of radio frequency identification, and more specifically, relates to a calibration method, device and system for transmitting power flatness of an RFID reader-writer. Background technique [0002] RFID (abbreviation for Radio Frequency Identification) reader, also known as "RFID reader", that is, radio frequency identification, is a communication technology that automatically identifies target objects and obtains relevant data through radio frequency identification signals without manual intervention. High-speed moving objects can identify multiple RFID tags at the same time, and the operation is fast and convenient. RFID readers are divided into fixed readers and handheld readers, which can be divided into low frequency (LF), high frequency (HF), ultra high frequency (UHF) and microwave (MW) according to different frequencies. RFID readers are widely used, develop rapidly, and are gradually becoming stable a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/13H04B5/00
CPCH04B17/13H04B5/77Y02D30/70
Inventor 曾三妹刘湘贵李慕松
Owner INVENGO INFORMATION TECH