Fixed radio frequency reader

Abstract

The invention discloses a fixed type wireless radio frequency reader-writer. The fixed type wireless radio frequency reader-writer comprises a digital circuit board and a radio frequency circuit board which are connected, wherein the digital circuit board consists of a master control module, and a power supply and indicator lamp module, a serial port control module, an Ethernet module, a wireless expanding module, an EEP ROM (Electrically Erasable Programmable Read-Only Memory) module, an interface module and a debugging module which are connected with the master control module respectively; the radio frequency circuit board consists of a radio frequency read-write module and a control module which are connected with each other, as well as a power supply module, a low-pass filter module, an external power amplification module, a coupler module which are connected with the radio frequency read-write module respectively, and a radio frequency switch and an antenna port module, the control module is connected with the interface module, and the external power amplification module is connected with the antenna port module through the coupler module and the radio frequency switch module.

Description

technical field [0001] The invention relates to the field of radio frequency identification, in particular to a fixed radio frequency reader. Background technique [0002] In the radio frequency identification system, the radio frequency part and the digital part of the reader in the prior art are concentrated on one circuit board, and there is only one single-chip microcomputer to read and write and process the tag data information, and most of the radio frequency switch modules in the radio frequency part adopt a first-class The radio frequency switch has low isolation, low speed of reading and writing and processing data, and the single-chip microcomputer chip does not have data protection function, which cannot meet the needs of users in case of power failure and network emergency. Contents of the invention [0003] The invention provides a fixed wireless radio frequency reader, which is used to improve the antenna isolation. . [0004] To achieve the above object, t...

AI Technical Summary

Problems solved by technology

[0002] In the radio frequency identification system, the radio frequency part and the digital part of the reader in the prior art are concentrated on one circuit board, and there is only one single-chip microcomputer to read and write and process the tag data information, and most of the radio frequency switch modules in the radio frequency part adopt a first-class The radio frequency switch has low isolation, low speed of reading and writing and processing data, and the single-chip microcomputer chip does not have data protection function, which cannot meet the needs of users in emergency situations of power failure and network failure.

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