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Radio frequency identification (RFID) tag system integrating perception and identification

An RFID tag, an integrated technology, applied in the field of RFID tags, a RFID tag system integrating perception and identification, can solve the problem that the reader cannot directly obtain environmental data, etc., achieve the effect of convenient and intelligent operation, and prevent protocol conflicts

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

AI Technical Summary

Problems solved by technology

[0003] Usually, when the reader and the tag are connected, the reader cannot directly obtain environmental data, such as environmental humidity and other data

Method used

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  • Radio frequency identification (RFID) tag system integrating perception and identification
  • Radio frequency identification (RFID) tag system integrating perception and identification
  • Radio frequency identification (RFID) tag system integrating perception and identification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An RFID tag system integrating perception and identification in this embodiment, such as figure 1 As shown, it includes a sensor module, a reader and a tag. The tag includes a radio frequency front-end module, a mode switching switch, a recognition mode protocol state machine, and a perception mode protocol state machine, wherein the mode switching switch, the recognition mode protocol state machine, and the perception mode protocol state machine into a protocol stack; the mode switching switch is a single-pole double-throw switch;

[0024] The input terminal of the radio frequency front-end module is connected to the reader through radio frequency signal communication, the output terminal of the radio frequency front-end module is connected to the common contact of the mode switching switch, and the first contact of the mode switching switch is connected to the identification mode protocol state machine, and the mode switching The second contact of the switch is connec...

Embodiment 2

[0031] The solution of this embodiment is based on Embodiment 1, and is a preferred setting for the RF front-end module, such as figure 2 As shown, the RF front-end module includes an integrator, a discriminator, an inverter and an SPI adaptation circuit, the signal sent by the reader is input from the input of the integrator and the inverter, and the output of the integrator is connected to the discriminator The input end of the discriminator is connected to the input end of the SPI adaptation circuit, and the RF front-end module outputs a clock signal and a bus signal.

[0032] In this example, see image 3 , the SPI adaptation circuit includes a first resistor, a first capacitor, a second resistor, a third resistor, a second comparator, a first switch and a second switch, and one end of the first resistor is used as an input terminal of the SPI adaptation circuit , the other end of the first resistor is connected to the input end of the second comparator, the output end o...

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Abstract

The invention discloses a radio frequency identification (RFID) tag system integrating perception and identification, relates to the technical field of RFID tags, and aims to realize two functions of reading information stored in a tag and perceiving environment simultaneously by one RFID system, an input end of a radio frequency front-end module is in communication connection with a reader through a radio frequency signal, the output end of the radio frequency front-end module is connected to a common contact of the mode change-over switch, a first contact of the mode change-over switch is connected with the identification mode protocol state machine, a second contact of the mode change-over switch is connected to the sensing mode protocol state machine, and the sensing mode protocol state machine is connected to the sensor module through a standard bus; and the identification mode protocol state machine provides a protocol for the identification mode, and the perception mode protocol state machine provides a protocol for the perception mode, so that the reader sets or changes the information related to the read object and stored on the tag, and the reader obtains the environmental parameters through the tag.

Description

technical field [0001] The present invention relates to the technical field of RFID tags, more specifically to the technical field of RFID tag systems integrating perception and identification. 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, for the large-scale application of RFID, RFID sensor tags with sensing capabilities have been born at the same time. It has a wide range of applications in food, food and asset management. [0003] Usually, when the reader and the tag are connected, the reader cannot directly obtain environmental data, such as environmental humidity and other data. In order to expand the data reading capability of RFID, it can be set or changed by the reader like traditional RFID, and the information related to the ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10
CPCG06K7/10237
Inventor 鲁力李松璠孟千贺白彦序张翀宋一杭
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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