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Data exchange method between reader and RFID tag

A RFID tag and data exchange technology, applied in the field of RFID data processing, can solve the problems of low throughput, data exchange capability and throughput need to be improved, improve data throughput efficiency, embed uplink data simple and convenient, and avoid invalid exchange Effect

Pending Publication Date: 2021-11-26
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the traditional technology used, in the communication between the reader and the RFID tag, the reader and the RFID tag use the Read / Write command in the Access stage to exchange data. However, the throughput of this method is not high, and the data exchange capability and throughput still needs to be improved

Method used

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  • Data exchange method between reader and RFID tag
  • Data exchange method between reader and RFID tag

Examples

Experimental program
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Embodiment 1

[0025] like figure 1 As shown, the present embodiment provides a data exchange method between a reader and an RFID tag, including a selection stage and an inventory stage;

[0026] In the selection stage, the reader sends a Select command to the RFID tag, and the Select command is embedded with a downlink control command. This stage divides the RFID tag group, and selects an RFID tag group to enter the inventory stage;

[0027] Specifically, in this embodiment, preferably, the specific steps of the inventory phase are:

[0028] Step S1: The reader sends a Query command to the RFID tag, the Query command includes Q, and the value of Q is the estimated number of RFID tags by the reader;

[0029] Step S2: RFID tag in 0 to 2 Q A random number is generated in -1, and the tag with the generated random number of 0 replies RN16 to the reader, otherwise no reply is made;

[0030] Step S3: If there is an RFID tag to reply, go to step S6, if there is no RFID tag to reply, go to S4, if...

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Abstract

The invention discloses a data exchange method between a reader and an RFID tag, relates to the technical field of RFID data processing, and solves the technical problem of low throughput rate of existing data exchange. The method comprises a selection stage and an inventory stage. In the selection stage, the reader sends a Select instruction to the RFID tags, a downlink control command is embedded in the Select instruction, the RFID tag groups are divided in the selection stage, and one RFID tag group is selected to enter the inventory stage; in the inventory stage, the reader obtains an EPC from the RFID tag entering the inventory stage, the EPC represents an electronic product code, uplink data is embedded in the EPC, and the reader selects the RFID tag according to the obtained EPC to perform read-write operation; and the method has the advantages of high throughput rate and high data exchange efficiency.

Description

technical field [0001] The invention relates to the technical field of RFID data processing, and more particularly to the technical field of data exchange methods between readers and RFID tags. Background technique [0002] RFID is a technology that achieves the purpose of identification through direct non-contact data communication between the reader and the tag. With the rapid development of digital technology applications such as 5G, cloud computing, big data, and sensors, the large-scale application of RFID has a wide range of applications in identification, logistics, transportation, anti-counterfeiting, food, and asset management. [0003] In the traditional technology used, in the communication between the reader and the RFID tag, the reader and the RFID tag use the Read / Write command in the Access stage to exchange data. However, the throughput of this method is not high, and the data exchange capability and throughput There is room for improvement. [0004] By imp...

Claims

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Application Information

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IPC IPC(8): G06K7/10
CPCG06K7/10198Y02D30/70
Inventor 鲁力李松璠孟千贺白彦序张翀宋一杭
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA