RFID multi-label read-write identification method and device based on multiple channels

A technology of a reading and writing method and a recognition method, which is applied in the field of multi-channel-based RFID multi-tag reading and writing recognition methods and devices, and can solve problems such as incorrect reading, long anti-collision process, and increased probability

Active Publication Date: 2014-01-15
CHINA ELECTRONICS TECH GRP NO 7 RES INST
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  • Abstract
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Problems solved by technology

[0006] (1) In the case of a large number of tags, the anti-collision effect is not good
When the number of tags caught in collision is large, the anti-collision process is longer, and the probability of multiple tags responding at the same time increases
[0007] (2) The technology itself has the problem of missed reading. When a tag collides, it is not correctly read
In the case of a large

Method used

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  • RFID multi-label read-write identification method and device based on multiple channels
  • RFID multi-label read-write identification method and device based on multiple channels
  • RFID multi-label read-write identification method and device based on multiple channels

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Embodiment Construction

[0027] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] figure 1 It is a flow chart of a multi-channel based RFID multi-tag reading and writing method of the present invention, including:

[0029] S101: Pre-setting an initial number of communication channels;

[0030] S102: Send a radio frequency trigger signal, the radio frequency trigger signal includes the serial number of the communication channel and tag read / write status information of each communication channel;

[0031] S103: Decode the received reflected carrier signal, and acquire at least one set of tag feedback data in at least one communication channel;

[0032] S104: When the tag response information of one set of tag feedback data meets the preset confirmation condition, read the product electronic code information corresponding to the set of...

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Abstract

The invention discloses an RFID multi-label read-write identification method and device based on multiple channels. The label read-write method comprises the steps that a plurality of initial communication channels are set in advance, radio frequency trigger signals are sent out and comprise the number of the communication channels and label read-write state information of all communication channels, received reflection carrier signals are decoded, at least one set of label feedback data in at least one communication channel are obtained, when label response information of one set of label feedback data meets a preset recognition condition, product electronic code information corresponding to the set of label feedback data is read, and label recognition information related to the product electronic code information is sent out. According to the method and device, accuracy of label identification and identification efficiency are improved.

Description

technical field [0001] The invention relates to radio frequency identification technology, in particular to a multi-channel-based RFID multi-label reading and writing identification method and device. Background technique [0002] RFID (Radio Frequency Identification, radio frequency identification) technology, also known as electronic tag technology, is a non-contact automatic identification technology. Its basic working principle is to use radio frequency signals and inductive or electromagnetic space coupling transmission characteristics to realize the Automatic recognition of objects. The RFID system is mainly composed of readers, electronic tags and corresponding computer systems. [0003] In the second-generation RFID technology standard, electronic tags are divided into three categories: passive electronic tags, active electronic tags that cannot directly communicate with each other, and active electronic tags that can directly communicate with each other. Consideri...

Claims

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Application Information

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IPC IPC(8): G06K17/00
Inventor 伍继雄杜平俞正明
Owner CHINA ELECTRONICS TECH GRP NO 7 RES INST
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