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Anti-capture RFID multi-label identification method

An identification method and tag identification technology, applied in the field of radio frequency identification, can solve problems such as high system complexity, system time overhead, large communication overhead, and low identification efficiency

Inactive Publication Date: 2017-05-10
SOUTHWEAT UNIV OF SCI & TECH
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-capture RFID multi-tag identification method, aiming to solve the problem that the identification efficiency of the anti-capture method in RFID tag identification is low, the time overhead and communication overhead of the system are large, and the system complexity is relatively high. high problem

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  • Anti-capture RFID multi-label identification method

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Embodiment 1

[0040] For example, the reader recognizes the tags in the tag set T={t1, t2, t3, t4, ..., tn}, where n is the number of tags in the set, and p is the probability of capturing during the identification process, then the present invention The main process of completing tag identification is as follows:

[0041] (1) counter=0; calculate the number of captured tag sets that are captured, and the initial value is 0;

[0042] (2) m=n; the number of tags in the initial recognition domain or captured tag set, initially the number of tags is n;

[0043] (3) m=m*p; Calculate the number of tags in the capture tag set;

[0044] (4) counter=counter+1; add 1 to the number of captured tag sets;

[0045] (5) If m is greater than 1, then go to (3) to execute; otherwise go to (6) to execute;

[0046] (6) Push counter empty strings into the stack, and then start label recognition according to the CT algorithm.

[0047] (7) The reader sends the query command and prefix according to the CT alg...

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Abstract

The invention discloses an anti-capture RFID multi-label identification method. The method comprises the following steps of: calculating a capture happening condition according to a label quantity and a capture happening probability, and identifying labels; and only carrying out anti-capture processing at the initial stage of label identification and at the label identification finishing moment. Aiming at a basic process and a capture principle of RFID system multi-label identification, the invention discloses a simple and efficient anti-capture RFID multi-label identification method, so that the capture problems in the RFID multi-label identification process is solved without influencing the RFID multi-label identification efficiency. The invention discloses a new label capture processing method, namely, a delayed processing method; through the new label capture processing method, no loss is caused to the identification performance of an original algorithm and the identification efficiency is above 50%; and the new label capture processing method is simple to implement and does not have obvious influences on the identification process and application implementation of the original algorithm.

Description

technical field [0001] The invention belongs to the technical field of radio frequency identification, in particular to an anti-capture RFID multi-label identification method. Background technique [0002] Radio Frequency Identification (RFID) technology is an automatic identification technology with the characteristics of real-time, fast and accurate collection. The RFID system uses radio frequency signals to achieve non-contact information transmission through spatial coupling (alternating magnetic field or electromagnetic field), and achieves the purpose of identifying target objects through the transmitted information. In the RFID system, due to the energy difference of the response tag, the direction of the antenna, the distance and other reasons, there is a gap in the strength of the response signal received by the reader. The stronger signal may cover the weaker signal, that is, the strong signal captures the weak signal. Therefore, the reader can only receive a stro...

Claims

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Application Information

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IPC IPC(8): G06K7/10
CPCG06K7/10019
Inventor 贾小林冯全源顾娅军贾越贺晓霞
Owner SOUTHWEAT UNIV OF SCI & TECH
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