Research On Informationization Of RFID-based ODN Port

With the development and implementation of the Broadband China Strategy,the demand for smart ODN networks from operators has become stronger and stronger.Traditional ODN networks often use paper tags to manage resources,resulting in high network operation and maintenance costs and low efficiency.The intelligent ODN network associates radio frequency identification technology with ODN network resource management to achieve efficient resource management.It is mainly composed of intelligent optical distribution frame,intelligent optical fiber jumper,intelligent reader and high-level management system.This article mainly adds the electronic label unit and control unit to the optical distribution frame to realize the information management of the optical fiber port.The main research work of this paper:1.Explained the relevant knowledge of RFID in detail,including the concept of RFID,system composition and classification,communication principle,technical process and wireless power supply technology of RFID.2.Based on the analysis and investigation of the characteristics and research status of the dipole antenna,a half-wave dipole antenna with a center frequency of 915 MHz is designed,the transmission characteristics of the electromagnetic wave in the antenna are studied,and the antenna S11,Impedance and directionality.3.Based on the research on the characteristics of the half-wave dipole antenna,a folded dipole antenna is designed,and the number of bending n,the bending width w,and the bending height h of the folded dipole antenna are studied.The influence of the line width a on the electrical performance parameters of the antenna,and the structure and optimization parameters of the antenna are continuously changed,so that the impedance of the antenna and the impedance of the RF chip are conjugated.4.In the scheme of the intelligent ODN network,the hardware circuit scheme of the ODF port is determined.Design and implement the module circuit(electronic tag circuit,voltage stabilization circuit,control circuit,LED display circuit and port detection circuit)based on the hardware solution,and analyze the limit protection and full-wave rectification of electromagnetic signals in the RF chip And voltage stabilization.Design,manufacture and solder the overall circuit layout.On the software side,the full-duplex,synchronous SPI communication between the radio frequency chip and the electronic tag is realized.5.Test the ODF port circuit.The results show that the longest distance for the reader to wake up the passive electronic tag is 3.2m,and the longest distance for the reader to light the LED is 70 cm.