RFID (Radio Frequency Identification) reader-writer with arc-shaped card reading surface

Abstract

The invention relates to an RFID (Radio Frequency Identification) reader-writer with an arc-shaped card reading surface. The RFID reader-writer is characterized by comprising a reader-writer contact surface and a read-write module main body, wherein the read-write module main body is internally provided with an RFID antenna, the reader-writer contact surface is arranged above the read-write module main body, a gap is arranged between the reader-writer contact surface and the read-write module main body, the upper surface of the reader-writer contact surface is an upwards-convex arc-shaped surface, and the reader-writer contact surface is used for placing an RFID tag. By adopting the RFID reader-writer with the arc-shaped card reading surface in the structure, the surface, which is in contact with the RFID tag, of the RFID reader-writer is designed in an arc shape, thus the effective distance between the RFID tag and the radio-frequency antenna of the RFID reader-writer is increased, and the response frequency detuning which is generated due to the direct contact of materials is reduced; the RFID tag is enabled to work in an optimum radio frequency area by an RFID tag limiting device, and slippage is prevented from happening; the size of the RFID tag limiting device is designed according to the size of the RFID tag, and thus the RFID tag limiting device can be suitable for RFID tags in different sizes.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to the technical field of radio frequency identification reading and writing devices, in particular to a radio frequency identification reading and writing device with an arc-shaped card reading surface. Background technique [0002] Radio frequency identification technology uses radio frequency to carry out non-contact two-way data communication to realize non-contact automatic identification of marked objects. This technology overcomes the limitation of line of sight effect, completes information input and processing without intervention, is anti-fouling, and can be processed in batches. , automation, and modern technical features. According to the working frequency, RFID equipment can be divided into low frequency, high frequency, ultra high frequency and microwave equipment; according to the power supply method, it can be divided into active equipment and ...

AI Technical Summary

Problems solved by technology

[0004] The antenna design of the radio frequency identification reader needs to obtain high gain in the working frequency band to complete the application requirements of reliable identification, while the response frequency band of the electronic tag antenna is very sensitive to the medium in direct contact, and the problem that the electronic tag cannot be recognized when it is placed on the surface of some objects often occurs

For RFID readers, the electronic tag will directly contact the surface of the RFID reader, which will cause the response frequency band of the electronic tag to shift, and the frequency band of the RF signal emitted by the reader is designed according to the original response frequency band. It cannot follow the frequency offset of the electronic tag, so it will be difficult for the reader to read and write the electronic tag

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