RFID (Radio Frequency Identification Devices) reader-writer and data transmission method thereof
A reader and data technology, applied in the field of RFID readers, can solve the problems that RFID readers cannot be applied to occasions requiring high read and write speed, and RFID readers are large in size.
Active Publication Date: 2012-11-14
SHANGHAI BEIJING UNIV FOUNDER TECH COMP SYST
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is: aiming at the shortcomings of the above prior art, a RFID reader-writer and its data transmission method are proposed, which can solve the problem that the existing RFID reader-writer cannot be applied to occasions requiring high read-write speed The problem and solve the problem of large size of RFID reader
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[0037] In order to better understand the essence of the present invention, the following embodiments describe the present invention in detail in conjunction with the accompanying drawings.
[0038] Such as figure 1 As shown, the RFID reader-writer based on the PCI-E interface in the present embodiment includes a host end and a reader-writer end, and the host end and the reader-writer end are connected to each other by a PCI-E interface connector; the host end includes Control module, database, data processing module, PCI-E interface driver module; the reader includes PCI-E interface chip, embedded microprocessor, VHF-based RFID sending and receiving chip, VHF RFID antenna;
[0039] From figure 2 The software flow chart of data and command processing by the control module can be seen: when the host is powered on, the control module initializes the local registers and then waits and scans whether there is data sent by the data processing module or whether there is any data tha...
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The invention discloses an RFID (Radio Frequency Identification Devices) reader-writer, which comprises a host end and a reader-writer end, wherein the host end and the reader-writer end are mutually connected through a PCI-E(Peripheral Component Connections-Express) interface connector. Since a control program module and a database of the host end are arranged in the host end, an independent storage unit is free from being arranged at the reader-writer end; all data read and wrote by the RFID reader-writer are interacted with the database of the host end through the control program module ofthe host end, so that the volume of the RFID reader-writer can be reduced; an embedded microprocessor mainly plays a role of transmitting the data between the host end and the reader-writer end without processing the data, thereby accelerating the processing of the reader-writer end; and in addition, the database is arranged in the host end, the host CPU (Central Processing Unit) generally has stronger computing capability compared with the computing capability of an embedded processor of the reader-writer end and can be used for processing more read-write times in the same time, thereby shortening the read-write time of single RFID card and being easier to meet the requirements of occasions having higher requirements on the read-write speed.
Description
technical field [0001] The invention relates to an RFID reader-writer. Background technique [0002] With the increasing popularity of RFID, more and more items have begun to be affixed with RFID tags for identification. Its application range is very wide, mainly including commodity retail, commodity anti-counterfeiting, transportation, logistics warehousing, safety management, medical and health, books and archives and national defense, etc. But existing RFID reader also exists following some defects: one existing RFID reader adopts embedded processor as main controller, and the operation of existing embedded processor and the processing ability to data are all better than computer The CPU is weak, and if a processor with strong processing power is used, the product cost will be greatly increased, so the time to read and write RFID tags is relatively long, which is not suitable for occasions that require high read and write speed; the second is the existing RFID tags. Mos...
Claims
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IPC IPC(8): G06K17/00
Inventor 甘金拓
Owner SHANGHAI BEIJING UNIV FOUNDER TECH COMP SYST