An RFID-based management system and method for dense objects in closed spaces

Abstract

The invention discloses an FPGA (Field Programmable Gate Array)-based enclosed space intensive object management system and method. The system comprises an RFID reader-writer, a plurality of antenna arrays, a plurality of multi-path antenna conversion devices, a processor unit, a display unit, a power supply and RFID electronic tags. The method comprises the following steps: initializing; performing reading operation by the reader-writer; opening a plurality of antenna arrays by the multi-path antenna conversion devices in sequence; reading electronic tag IDs (Identity) by the antenna arrays in a time-sharing polling mode and transmitting to the processor unit; and obtaining an actual mapping table between the electronic tag IDs and antenna serial numbers by the processor unit according to the correspondence between the antenna serial numbers and the read electronic tag IDs, comparing the mapping table with a position mapping table arranged in the processor unit, and performing corresponding processing according to a comparison result. According to the system and the method, object state monitoring of internal recognized objects can be performed without opening an enclosed space, and the technical difficulty for the RFID to perform intensive reading in an enclosed state can be solved.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to a system and method for managing densely placed articles in a closed space using radio frequency identification technology. Background technique [0002] In a dense state, electromagnetic signals are easily disturbed, and due to the distribution of electromagnetic areas distributed by RFID reader antennas, it is easy to generate blind areas in the magnetic field, resulting in missed readings. In order to solve the problem of magnetic field blind spots, people usually increase the number of antennas, but the reading speed of the RFID reader will be affected, the reading time will be longer, and the cost will increase. [0003] At present, there is no method for intensive reading of RFID in closed spaces and a method for management of dense items in closed spaces based on RFID in the prior art. [0004] In order to solve the management of densely placed item...

AI Technical Summary

Problems solved by technology

[0002] In a dense state, the electromagnetic signal is easily disturbed, and due to the electromagnetic area distribution of the RFID reader antenna distribution, it is easy to generate a magnetic field blind area, resulting in missed reading

In order to solve the problem of magnetic field blind zone, people usually adopt the method of increasing the number of antennas, but the reading speed of the RFID reader will be affected, the reading time will be longer, and the cost will increase

[0003] At present, there is no method for intensive reading of RFID in closed spaces and a method for management of dense items in closed spaces based on RFID.

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