Intelligent RFID reading system anticonflict scheduling method

A technology of reading system and scheduling method, applied in the field of radio frequency identification, can solve the problems of low identification efficiency and long search time, and achieve the effect of reducing the number of tags, improving the identification rate, and shortening the identification time of tags

Inactive Publication Date: 2007-06-06
SOUTH CHINA UNIV OF TECH
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current multi-antenna anti-collision mechanism uses the ALOHA algorithm. This anti-collision mechanism reduces the collision probability between tags to a certain extent, but the search time is still long and the identification efficiency is not high.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Intelligent RFID reading system anticonflict scheduling method
  • Intelligent RFID reading system anticonflict scheduling method
  • Intelligent RFID reading system anticonflict scheduling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] The schematic diagram of RFID reading system as shown in Figure 1, this RFID reading system comprises analog signal processing module, digital signal processing module, data processing module and antenna array, described antenna array is connected with analog signal processing module, and described data processing module The digital signal processing module is connected with the analog signal processing module. In the present invention, 4 antennas are used as the antenna array, but the multi-antenna described in the present invention is more than 4 antennas, and the number of antennas controlled by the reader can be adjusted according to specific conditions.

[0035] As shown in Figure 2, the schematic diagram of the interaction between the reader and the tag, its workflow is:

[0036] (1) Send a REQ command to the tag through the antenna;

[0037] (2) Receive ACK, if only one tag responds to send ACK at this time, then the reader can recognize the ACK, if there are mul...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a scheduling method to prevent conflicts in intelligent RFID read system. The method utilize the mechanism that reader controls multiple antennas, which is: all the antennas are controlled by the reader in order; the reader polls the antennas connected to the reader, and control the interactive between the single antenna and label; each time only one antenna can be activated to respond instructions from the reader; every two antenna effective covered regions are connected to reduce the overlap. The invention uses multiple antennas, at any time only one antenna takes effect, and then labels are divided into groups to recognize. The number of labels in the coverage covered by one antenna is reduced, thus the probability of conflicts is effectively reduced.

Description

technical field [0001] The invention relates to the field of radio frequency identification (Radio Frequency Identification, referred to as RFID), in particular to an anti-collision scheduling method for an intelligent RFID reading system. Background technique [0002] RFID technology is one of the main technologies in the field of automatic identification at present. Its main structure is composed of tags, antennas and readers. Among them, tags can be divided into active and passive. Send data to the reader antenna; passive tags need to be charged by the electromagnetic field formed by the radio waves emitted by the reader antenna, and use the converted electric energy to send data to the reader antenna, which requires a certain charging time. Currently, passive tags are widely used. The basic working principle of RFID is that the reader uses its own antenna to continuously transmit baseband signals outward, and loads commands on the baseband sig...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/00H04L12/28
Inventor 李波谢胜利邓毅华吴宗泽
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap