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Article in-out tracking system and method based on RFID

A tracking system and RFID tag technology, applied in the field of logistics tracking system, can solve the problems of decreased reading success rate, different antennas, and energy reduction, and achieve the effect of improving the reading success rate

Active Publication Date: 2009-02-04
THE HONG KONG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] 1) The problem that the tag attached to the metal object cannot be read; if the tag is attached to the metal object, the energy provided to the chip will be reduced due to the change of the antenna impedance of the tag
As a result, the reader is not able to receive any or only weak signals from the tags
[0008] 2) The limitation of the reading angle between the tag and the antenna of the reader; the traditional RFID tag antenna is generally a flat layout, however, the placement position of the tagged items in the shelf or container is different, so in the attached The angle between the tagged item and the reader's antenna is different
Therefore, it is very difficult to find a fixed angle that is suitable for all labels, resulting in a decrease in the success rate of reading

Method used

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  • Article in-out tracking system and method based on RFID
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  • Article in-out tracking system and method based on RFID

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Embodiment Construction

[0062] see figure 1 and Figure 5, figure 1 It is a schematic structural diagram of light-emitting diodes, light switches, power supplies, cooling fans, readers, working state control units, and light controllers included in the door control box; Figure 5 describes the entry and exit using the "double verification" method of the embodiment of the present invention Schematic diagram of the working process of the system.

[0063] As shown in Figure 5, the RFID-based article entry and exit tracking system includes an RFID tag 31 attached to the article, a motion sensor / IR sensor 32, an antenna 33 of multiple readers, a door control box 34, and a back-end data processing unit (not shown). RFID label 31 can be common RFID label, also can be the multiple label (such as being made up of a plurality of RFID labels) figure 2 shown in ), as in figure 2 The multiple tags shown in are 2 (RFID tag 21 and RFID tag 22). The door control box 34 is installed in the article access, such a...

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Abstract

This invention provides an in / out tracking system and a method based on RFID goods including RFID labels, a reader, a working state control unit, reader antennas and a back end data process unit, in which, the working state control unit is connected with the reader to control the working state of the reader, the RFID label is composed of multiple RFID labels and antennas of which are set in angle solving the problem that labels adhered on metals can't be read and improve the limit of reading angles between antennas of labels and readers. This invention also applies a double verification method to carry out double verification to multiple identity verification cards, and the control unit will convert the system from the standby mode to activation working mode only when the verification is successful.

Description

technical field [0001] The invention relates to a logistics tracking system and method, in particular to an RFID-based article entry and exit tracking system and method. Background technique [0002] Radio frequency identification technology is a technology that uses radio frequency signals to achieve contactless transmission of information through spatial coupling (alternating magnetic field or electromagnetic field) and achieves identification purposes through the transmitted information. RFID is widely used in a wide range of fields, including: logistics management, such as shopping malls and supermarket charges, warehousing management to after-sales service, and production and assembly automation; traffic management, such as road tolls and traffic control, container tracking; data statistics, such as animal tracking , sports timing, etc.; security and anti-theft, such as access control identification, item monitoring and anti-theft, etc. [0003] In the logistics contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/00G06Q10/00G06Q10/08
Inventor 倪伟定蔡日星蔡一帆
Owner THE HONG KONG POLYTECHNIC UNIV
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