A reader device and timing optimization method for communication between reader and tag

A technology of readers and devices, applied in the field of radio frequency identification communication, which can solve the problems of communication failure, slow operation speed of microprocessors and radio frequency chips, and timeout of reader responses.

Active Publication Date: 2018-10-16
WUHAN WANJI INFORMATION TECH
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  • Summary
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  • Description
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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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  • A reader device and timing optimization method for communication between reader and tag
  • A reader device and timing optimization method for communication between reader and tag
  • A reader device and timing optimization method for communication between reader and tag

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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 reader device includes a data receiving module, a data processing module and a data sending module.

[0023] When BLF is the highest value range, preferably at the t1 moment when the reader data receiving module receives the data, the control data sending module starts to send the preamble information; at the same time, the data processing module analyzes the received data in parallel, t2 The time analysis is completed; then the data processing module encodes the data to be sent, and the encoding is completed at time t3; aft...

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Abstract

The invention provides a reader-writer device and a timing optimization method for communication between the reader-writer and a tag. The reader-writer device includes: a data receiving module for receiving data; a data processing module for analyzing and processing received data The sent data is encoded and processed, and the data sending module is controlled based on the reverse link frequency value; the data sending module is used to send the preamble and the encoded data based on the control instruction of the data processing module. This scheme greatly improves the sending speed, avoids the response timeout, and improves the communication efficiency.

Description

technical field [0001] The present invention relates to the field of radio frequency identification (Radio Frequency Identification, RFID) communication, and more specifically, to a reader-writer device and a timing optimization method for communication between a reader-writer and a tag. 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 tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B5/00G06K7/10
CPCG06K7/10009H04B5/0062
Inventor 王鹏鹏谢理武宏伟
Owner WUHAN WANJI INFORMATION TECH
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