Method for optimizing communication time sequence of reader/writer and label

A reader and communication system technology, applied in the field of radio frequency identification communication, can solve the problems of slow operation speed of microprocessor and radio frequency chip, communication failure, reader reply timeout, etc.

Active Publication Date: 2017-01-11
WUHAN WANJI INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0008] In practical applications, this type of reader may be due to the slow operation speed of the selected microprocessor and radio frequency chip, resulting in a relatively high BLF, the T2 time is too long, and the card end will judge the reader to reply Timeout, which leads to communication failure

Method used

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  • Method for optimizing communication time sequence of reader/writer and label
  • Method for optimizing communication time sequence of reader/writer and label
  • Method for optimizing communication time sequence of reader/writer and label

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Embodiment Construction

[0021] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] In one embodiment of the present invention, a reader / writer device of an RFID communication system is provided, such as figure 1 As shown, the read-write device includes a data receiving module, a data processing module and a data sending module.

[0023] When the BLF is in the highest value range, it is preferable to control the sending module to start sending the preamble information at the time t1 when the receiving module of the reader-writer completes receiving; at the same time, the data processing module analyzes the received data in parallel, and analyzes at the time t2 Complete; then the data module encodes the data to be sent, and the encoding is complete...

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Abstract

The invention provides a reader / writer device of an RFID (Radio Frequency Identification) communication system and an optimization method. The device comprises a data receiving module for receiving data; a data processing module for analyzing the received data, coding the sent data and controlling a data sending module based on a reverse link frequency value; and the data sending module for sending a lead code and coded data based on a control instruction of the data processing module. According to the scheme, the sending speed is improved, response timeout is avoided and the communication efficiency is improved.

Description

technical field [0001] The present invention relates to the field of radio frequency identification (Radio Frequency Identification, RFID) communication, and more specifically, relates to a link timing optimization method for communication between a reader-writer and a tag in an RFID system. Background technique [0002] The working principle of the RFID system is that when the tag enters the communication range of the reader, it receives the radio frequency signal sent by the reader, and the passive tag can provide energy for itself through the carrier signal sent by the reader, and follow the instructions of the reader. The corresponding operation completes the information transmission with the reader. [0003] At this stage, RFID identification systems are widely used in various fields such as manufacturing, logistics and warehousing, transportation, medical and health, and public safety. It uses the spatial coupling of radio frequency signals to realize contactless data...

Claims

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Application Information

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IPC IPC(8): H04B5/00G06K7/10
CPCG06K7/10009H04B5/77
Inventor 王鹏鹏谢理武宏伟
Owner WUHAN WANJI INFORMATION TECH
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