Method and system of RFID boundary determination based on reference tags

A determination method and RFID tag technology, applied in the field of radio frequency identification RFID, can solve problems such as misjudgment, and achieve the effect of accurately obtaining the reference space

Pending Publication Date: 2017-09-08
上海赋拓物联网技术有限公司
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Problems solved by technology

However, the radio frequency radiation range of the antenna is an open space range, and the radio frequency signal will produce complex reflection and diffraction in the actual space, causing the item tags outside the target scanni

Method used

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  • Method and system of RFID boundary determination based on reference tags
  • Method and system of RFID boundary determination based on reference tags
  • Method and system of RFID boundary determination based on reference tags

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Embodiment Construction

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

[0028] The RFID boundary determination method based on the reference tag of the present invention comprises:

[0029] S001. Establish a coordinate system, arrange an antenna carrying RFID information in the coordinate system, and place the area to be detected in the coordinate system;

[0030] S002. Place the reference label at the boundary of the area to be detected, and calculate the coordinate range of the reference area;

[0031] S003. Detect the signal sent by the reference tag, and feed back the signal strength value to the antenna. The signal strength values ​​fed back by the reference tag on antennas in different directions all form an envelope line, and multiple envelope lines form an envelope space. The space corresponds to the extent of the reference area;

[0032] S004, detecting the signal sent by the target tag attached to the target item;

...

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Abstract

The present invention discloses a method and system of RFID boundary determination based on reference tags. A reference area is set and is arranged in a coordinate system, such as an XYZ three-dimensional coordinate system, the coordinate range of the reference area is determined, reference tags carrying RFID information are arranged at the boundary of the reference area, an antenna emits radio-frequency signals and obtain feedback of standard tags to collect information intensity values of the standard tags for forming an enveloping space and defining the signal range of the reference area so as to compare the signal intensity values of a target tag with the signal value range of the enveloping space to determine whether a target article carrying the target tag is located in the reference area (such as a warehouse) or not, and therefore the method and system of RFID boundary determination based on reference tags are simple and convenient. Besides, the radio-frequency signal emission power of the antenna can be regulated in real time to allow the radio-frequency signals to be rapidly attenuated to more accurately obtain a reference space.

Description

technical field [0001] The invention relates to the field of radio frequency identification (RFID), in particular to a method and system for determining an RFID boundary based on a reference tag. Background technique [0002] Radio Frequency Identification (RFID) is a wireless communication technology that can identify specific targets and read and write related data through radio signals without establishing mechanical or optical contact between the identification system and specific targets. Radio signals transmit data from a tag attached to an item through an electromagnetic field tuned to a radio frequency to automatically identify and track the item. [0003] In the item management system using RFID technology, RFID antennas are installed on the warehouse boundary where items are stored. The items in the warehouse are pasted or implanted with RFID tags, and the RFID tags are automatically identified through the antenna to determine the type and quantity of items in the ...

Claims

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Application Information

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IPC IPC(8): G06K7/10
CPCG06K7/10118G06K7/10316
Inventor 左彦波徐杰柴斌
Owner 上海赋拓物联网技术有限公司
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