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Performance evaluation method for RFID reader anti-collision protocol

A reader and anti-collision technology, which is applied in the field of RFID radio frequency identification, can solve problems such as complex constraints, lack of a unified comparison standard for anti-collision protocols, difficulties in anti-collision protocols, etc., and achieve the effect of simple deployment

Active Publication Date: 2019-12-03
SUN YAT SEN UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the anti-collision protocol for RFID readers in the prior art lacks a unified comparison standard and has complex restrictive conditions, which leads to difficulties in selecting an anti-collision protocol suitable for the system, the present invention provides an anti-collision protocol for RFID readers Protocol performance evaluation method

Method used

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  • Performance evaluation method for RFID reader anti-collision protocol
  • Performance evaluation method for RFID reader anti-collision protocol
  • Performance evaluation method for RFID reader anti-collision protocol

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Embodiment 1

[0030] Such as figure 1 As shown, a performance evaluation method of RFID reader anti-collision protocol, including the following stages: RFID reader collision information collection stage, RFID server graph theory modeling stage, RFID reader anti-collision protocol testing stage and comparison and selection stage ;

[0031] RFID reader collision information collection stage: Under the unified coordination of the RFID server, each RFID reader sends a collision detection signal to the surrounding according to the power of the RFID tag read, and the RFID reader that receives the collision detection signal according to the collision The signal strength of the detection signal judges whether there will be a collision when the RFID reader sending the collision detection signal reads the tag at the same time, and sends the collision information to the RFID server;

[0032] RFID server graph theory modeling stage: the RFID server summarizes the collision information of all RFID read...

Embodiment 2

[0041] Such as Figure 1 to Figure 7 As shown, this embodiment proposes a performance evaluation method for an RFID reader anti-collision protocol, including an RFID reader collision information collection stage, an RFID server graph theory modeling stage, an RFID reader anti-collision protocol test stage, and comparison and selection stage. Among them, the specific application scenarios of RFID readers can be warehousing to identify goods, amusement parks to identify pedestrians, etc., where the exact or heuristic algorithm for solving the largest independent set can be exhaustive algorithm, Bron-Kerbosch algorithm, Vertex Support algorithm, etc.

[0042] figure 2 It is a system block diagram of the server allocating time slots for the reader in the stage of reader collision information collection. All readers have been connected to the server in the form of wired or wireless, the server obtains the IDs of all readers and assigns a unique time slot number to each reader, f...

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Abstract

The invention relates to the field of RFID, in particular to a performance evaluation method for an RFID reader anti-collision protocol. Firstly, under the control of a server, an RFID reader sends aspecified signal to detect the collision condition with surrounding readers. Then, the server performs graph theory modeling according to the collision information of all the readers, and calculates amaximum independent set. Meanwhile, all the RFID readers are provided with the same RFID reader anti-collision protocol, and start to execute and record state information at the same time. Finally, the server compares the state information of all the readers with the maximum independent set, and calculates the closeness degree of the state information and the maximum independent set. The RFID reader anti-collision protocol is selected with the optimal performance according to the closeness degree. From the perspectives of simple deployment and rapid evaluation, performance evaluation can be carried out on multiple RFID reader anti-collision protocols according to the graph theory principle and RFID system characteristics, and the protocol with the optimal performance can be selected.

Description

technical field [0001] The invention relates to the field of RFID radio frequency identification, and more specifically, relates to a performance evaluation method of an RFID reader anti-collision protocol. Background technique [0002] Radio Frequency Identification (RFID) technology is the technical basis of the Internet of Things and is widely used in modern logistics, intelligent manufacturing, public information services, intelligent medical care and other industries. An RFID system consists of servers, readers and tags. RFID reader collision refers to the phenomenon that when two readers that are very close to each other read the access tag, the readers interfere with each other, causing both readers to fail to read the tag. RFID reader anti-collision protocol is a general term for algorithms and protocols used to solve the problem of reader collision in RFID systems. With the rapid development of the Internet of Things, in order to improve the efficiency of label id...

Claims

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Application Information

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IPC IPC(8): G06K7/10
CPCG06K7/10297G06K7/10019
Inventor 李中华何冠男
Owner SUN YAT SEN UNIV
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