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Method, system and reader for avoiding signal interference in radial frequency identification system

A radio frequency identification and signal interference technology, which is applied in the field of automatic identification and can solve the problems of signal interference and reduction of the recognition rate.

Active Publication Date: 2014-06-11
ZTE INTELLIGENT IOT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method, system, and reader for avoiding signal interference in a radio frequency identification system, which are used to solve the problem caused by the adjacent boundary antennas of adjacent readers working simultaneously when the boundary antenna of the reader performs tag identification operations The problem of signal interference and the reduction of recognition rate

Method used

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  • Method, system and reader for avoiding signal interference in radial frequency identification system
  • Method, system and reader for avoiding signal interference in radial frequency identification system
  • Method, system and reader for avoiding signal interference in radial frequency identification system

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Embodiment 1

[0030] Such as figure 2 As shown, the embodiment of the present invention provides a method for avoiding signal interference between adjacent boundary antennas between two readers connected to two antennas respectively. Such as image 3 As shown, the specific steps are as follows:

[0031] Step 31, before the first reader triggers the first antenna to perform the tag identification operation, the first reader first obtains its own antenna configuration table, and checks whether the first antenna’s identifier is in the antenna configuration table, and if yes, then go to step 32; otherwise, detect the next antenna of the first reader;

[0032] Table 1 is the antenna configuration table of the first reader, which includes the antenna identification of the antenna adjacent to the second reader on the first reader, the address information of the second reader, and the connection between the second reader and the second reader. A physical link number between readers, and the phy...

Embodiment 2

[0053] see image 3 In the shown process, the specific steps of Embodiment 2 of the present invention are as follows:

[0054] Step 31, before the first reader triggers the first antenna to perform the tag identification operation, the first reader first obtains its own antenna configuration table, and checks whether the first antenna’s identifier is in the antenna configuration table, and if yes, then go to step 32; otherwise, detect the next antenna of the first reader;

[0055] Step 32, the first reader sends to the second reader an antenna link to the second antenna of the second reader according to the address information of the second reader and the physical link number between the second reader and the first reader. Status query request message;

[0056] the second antenna is an antenna on the second reader adjacent to the first antenna;

[0057] Step 33, after the second reader receives the status query request, it obtains its own antenna configuration table, see Ta...

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Abstract

A method of avoiding signal disturbance in a RFID system, a RFID system and a reader are disclosed, in which the method includes: a first reader sends a status query request message for querying a second antenna status to a second reader, before it triggers a first antenna to perform tag identification operation, in which the second antenna is neighborhood to the first antenna in the second reader; the second reader confirms whether the second antenna is currently in the working status or not, and feedbacks a status query response message which means that the second antenna lies in the working status to the first reader when the second antenna lies currently in the working status, after it receives the status query request message; and the first reader quits the current operation which can trigger the first antenna to perform the tag identification operation, after it receives the status query response message which means the second antenna lies in the working status. The present solutions can avoid the disturbance problem of the same frequency signals effectively.

Description

technical field [0001] The invention relates to the technical field of automatic identification, in particular to a method, system and reader for avoiding signal interference in a radio frequency identification system Background technique [0002] Radio Frequency Identification (RFID) technology is a non-contact automatic identification technology, which automatically identifies the target object and obtains relevant data through radio frequency signals, and the identification work does not require manual intervention. RFID is a simple wireless system, including two basic components: a reader (or reader, reader) and many transponders (or tags). The working principle of traditional RFID technology: a unique code is stored in the RFID tag. When the tag enters the active area of ​​the reader, the tag sends a weak signal to the reader, and the reader reads the signal into itself through the antenna and converts it into a number. Signal, and then carry out necessary processing a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/00
CPCG06K7/10475G06K7/10118
Inventor 陈杰马凯吴中平徐运高峰
Owner ZTE INTELLIGENT IOT TECH