Multi-label collision-proof method

An anti-collision and multi-label technology, applied in the field of automatic identification, can solve problems such as shortening the time required for anti-collision, achieve the effects of shortening query time, narrowing the scope, and overcoming the complexity of the process

Inactive Publication Date: 2007-11-14
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0029] The present invention aims to solve the shortcomings of existing anti-collision algorithms, inherits the advantages of the above-mentioned dynamic binary search algorithm and return ty

Method used

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Embodiment Construction

[0043] The present invention will be further described in detail in conjunction with the accompanying drawings and embodiments.

[0044] Fig. 2 is a flow chart of the multi-tag anti-collision method according to the present invention. Referring to Figure 2, initially a storage area of ​​the reader is set as a stack, and the algorithm steps are as follows:

[0045] Step 201, the program starts;

[0046] Step 202, initialize, generate a serial number of all 1s as a parameter of REQUEST, and store it in the stack;

[0047] Step 203, push the REQUEST parameter onto the stack;

[0048] Step 204, judging whether the stack is empty, if not empty then execute step 206, otherwise execute step 205 and the program ends;

[0049] Step 205, the program ends;

[0050] Step 206, taking the top element of the stack as a parameter of the REQUEST command;

[0051] Step 207, sending a REQUEST command;

[0052] Step 208, receiving tag data;

[0053] Step 209, determine whether a collision ...

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Abstract

The invention discloses a multi-tag anti-collision method. The reader is set to a section of memory stack, stack from the above instructions in the pop-up REQUEST parameters for the whole or a part of the initial signal sequence; if sent 1 is the initial signal, all electronic tags to its own serial number given to RF cards; If sent to the partial sequence of RF cards, their sequence and the sequence of received, the sequence of its own if the former Several REQUEST instruction sequences, with the parameters being equal, this label to send their electronic serial number to the rest of the readers, not the same if we do not respond to the recycling process until all the labels have been disposed of. The invention overcomes the multi-tag identification process in the complex for steps, such as lack of long transmission time, quickly and effectively narrow the scope of the identification tags, shortened the time for, effective and expeditious completion of its readers between all labels communication.

Description

technical field [0001] The invention relates to automatic identification technology, in particular to a method for multi-label identification and anti-collision. Background technique [0002] Automatic identification technology, referred to as AEI (Automatic Equipment Identification) is a new technology that is developing rapidly in the world today. It is mostly used to realize the recognition of various objects or equipment (personnel, items) ) automatic identification and management. [0003] The means of applying radio technology in the field of automatic identification is radio frequency identification, referred to as RFID (Radio Frequency Identification). The radio frequency identification system usually consists of two parts: an electronic tag and a reader. The electronic tag is composed of a coupling element and a microelectronic chip. The chip stores a unique EPC (Electronic Product Code), that is, an electronic product code, which identifies a single commodity; rea...

Claims

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Application Information

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IPC IPC(8): G06K7/00
Inventor 邓中亮张小翠
Owner BEIJING UNIV OF POSTS & TELECOMM
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