Method and system of RFID boundary determination based on reference tags

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 ...

AI Technical Summary

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 scanning range to respond to the antenna

For example, when the item leaves the warehouse but is not far away, the antenna recognition will often mistake the item outside the warehouse as still inside the warehouse, resulting in misjudgment

Images