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Preparation method of vehicle-mounted RFID electronic tag

An electronic label and spiral arm technology, applied in the field of radio frequency identification, can solve problems such as hindering the application and development of RFID electronic parking charging systems, short detection distance of RFID electronic labels, and insufficiently advanced signal receiving and processing methods, so as to improve signal transmission efficiency, Improve positioning accuracy and improve the effect of detection distance

Inactive Publication Date: 2017-09-05
东莞市雍华昊信息技术有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low transmission power of general RFID electronic tags and the lack of advanced signal receiving and processing methods, the detection range of RFID electronic tags is short and the accuracy of position recognition is low, which largely hinders the application and development of RFID electronic parking toll collection systems, resulting in The current parking problem cannot be solved

Method used

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  • Preparation method of vehicle-mounted RFID electronic tag
  • Preparation method of vehicle-mounted RFID electronic tag
  • Preparation method of vehicle-mounted RFID electronic tag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] The specific implementation steps are as follows:

[0027] 1) Add Infineon's bipolar transistor BFP420 to the outside of the existing RFID reader, and use the microstrip line to perform impedance matching on the input and output terminals;

[0028] 2) Add an external antenna outside the existing RFID reader. The antenna adopts a specific light and small four-arm helical antenna, including a plastic support column 1, an upper PCB board 2, a lower PCB board 3, a bridge 4, and a spiral arm 5. Wherein the upper PCB board 2 and the lower PCB board 3 are both square, the upper PCB board 2 and the lower PCB board 3 are closely connected, the plastic support column 1 is fixed on the middle part of the upper PCB board 2 and protrudes upward, and the plastic support column 1 is a net It is a cylindrical frame structure in the shape of a shape, on which there are multiple card slots in the form of large outside and small inside. The groove on the supporting column 1 is designed t...

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PUM

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Abstract

A method for preparing a vehicle-mounted RFID electronic tag, comprising the following steps: (1) adding a radio frequency amplifier outside the RFID receiver, and using a microstrip line to perform impedance matching on the input end and the output end in order to reduce reflection; An external antenna is added to the outside of the receiver, and the antenna adopts a specific light and small four-arm helical antenna; (3) The baseband digital signal of the receiver is oversampled and filtered, and the data obtained by oversampling can be extracted with a CIC filter to increase the data rate. Return to the normal level, then cascade the FIR filter for band-pass filtering, further reduce the noise power and improve the signal-to-noise ratio; (4) Perform DC offset correction processing on the receiver baseband digital signal, and filter the signal through capacitive AC coupling The DC part is used to reduce the interference of the DC offset; (5) Perform coherent detection data decoding processing on the receiver baseband digital signal.

Description

technical field [0001] The invention relates to the technical field of radio frequency identification, in particular to a method for preparing a vehicle-mounted RFID electronic tag. Background technique [0002] Radio Frequency Identification (RFID) is an automatic identification technology that conducts non-contact two-way data communication through radio frequency and identifies targets to obtain relevant data. The electronic parking charging system uses radio frequency identification technology to complete the wireless data communication between the car and the automatic toll station, which is an important way to solve the current parking problem. Due to the low transmission power of general RFID electronic tags and the lack of advanced signal receiving and processing methods, the detection range of RFID electronic tags is short and the accuracy of position recognition is low, which largely hinders the application and development of RFID electronic parking toll collection...

Claims

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Application Information

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IPC IPC(8): G06K19/077
CPCG06K19/0772G06K19/07773
Inventor 陈广学
Owner 东莞市雍华昊信息技术有限公司
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