Realization Of National Autonomous Standard RFID Verification System Based On Software Radio

Radio frequency identification technology(RFID)has been successfully applied to people's lives in various industries and fields.From China's second generation ID card,asset management,smart home,and even aerospace field,we can see the application of RFID technology.RFID technology with its own unique advantages,has been able to achieve cross-domain applications.Especially for UHF RFID technology,it has many key advantages,such as using for longer distance communication,quickly establishing a connection,which has become the most popular technology.But high-frequency RFID technology also need to overcome some key issues.One of the important reasons is that the verification environment is not perfect.There is no better verification platform,rapid analysis of waveforms,troubleshooting problems.So it is needed to establish a verification platform which not only can establish communication with RFID products,but also can analyze a variety of waveform and physical parameters.This work is based on NI modular equipment.Using software radio technology,design and implement a ultra-high frequency passive RFID tag verification platform in line with national standards.The platform uses the NI PXIe-5646 R RF vector signal transceiver to form the transceiver path and digital baseband required for the verification system.In its own internal FPGA,we can achieve coding and decoding,command sequence processing and other real-time requirements of the higher signal processing functions.Using NI PXIe-8135 embedded controller as a system controller,based on software programming,we can achieve the entire system of state control and real-time communication.Design a more concise image of the user interface,according to the protocol.You can set the appropriate parameters simple.At the same time,the internal advanced signal processing tools can analyze signal in the frequency domain,time domain and joint time-frequency,and waveform analysis results will be displayed on the interface.The command data and received the tag response data will be showed in text,easy to troubleshoot problems,simplify verification.The verification platform can verify whether the UHF tag meets the national autonomous standard protocol or not,while testing various physical parameters to conduct a comprehensive verification and testing for the tag performance.With test results,it is showed that the parameters of the verification system simulation reader meet the requirements of the agreement,and it can establish communication with the tag,and the system platform can analyze and process the received signal and display it to the host platform.