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Method and device for positioning radio frequency identification label

A technology of radio frequency identification and positioning method, applied in the field of video identification, can solve problems such as increasing the cost of label manufacturing and reducing the adaptability of labels

Inactive Publication Date: 2012-05-02
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Patent Document 2 is indeed a very good method for finding a specified label, but the method must add an LED device to the label, and the added LED device not only increases the manufacturing cost of the label, but also reduces the label's ability to adapt to the environment , the label will no longer apply to working environments that are not suitable for LEDs, such as damp, shock-prone environments

Method used

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  • Method and device for positioning radio frequency identification label
  • Method and device for positioning radio frequency identification label
  • Method and device for positioning radio frequency identification label

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Embodiment Construction

[0027] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In the interest of clarity and conciseness, not all features of an actual implementation are described in this specification. It should be appreciated, however, that in developing any such actual implementation, many decisions specific to that actual implementation must be made in order to achieve the developer's specific goals, such as meeting those constraints associated with the system and business, And these constraints may vary with different implementations. Furthermore, it should also be understood that development work, while potentially complex and time-consuming, would at least be a routine undertaking for those skilled in the art having the benefit of this disclosure.

[0028] The commonly used UHF RFID tags have the following characteristics: can be read from a long distance, and the reading distance of passive RFID tags can be as high as 10m;...

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Abstract

The invention discloses a method and a device for positioning a radio frequency identification (RFID) label. The method comprises the following steps of: respectively reading a plurality of linearly-arranged object label presetting times under a plurality of appointed transmitting power by an antenna of a RFID reader; recoding the times that each object label is successfully read by the antenna under each appointed transmitting power; calculating the sum of the times that each object label is successfully read by the antenna; ensuring an arrangement sequence of each object label relative to the antenna by sequencing the sum of the times that each object label is successfully read; calculating normalization reading probability of each object label relative to the antenna; and ensuring the distance of each object label to the antenna by inquiring and reading a probability map according to the normalization reading probability of each object label relative to the antenna, and reading a corresponding relationship between the normalization reading probability of a probability map recording label relative to the antenna and the distance of the label relative to the antenna.

Description

technical field [0001] The present invention generally relates to the field of video identification, and more specifically relates to a radio frequency identification tag positioning method and device. Background technique [0002] Nowadays, the method of locating the position of the target object by locating the RFID (Radio Frequency Identification: radio frequency identification) tag has become more and more important in the field of logistics and production line. In addition, the method of determining the position and orientation of a moving object carrying an RFID reader by positioning the RFID tag has also been widely used in the field of robot control. UHF RFID can be used to read tags at a long distance, and passive tags with a distance of about 10m can be read through this frequency band. This performance greatly improves the possibility of RFID tags being applied in logistics and production lines. With the wide application of UHF RFID technology, an RFID reader can...

Claims

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Application Information

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IPC IPC(8): G01S13/74G06K7/00
Inventor 陆应亮于浩
Owner FUJITSU LTD
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