The Design And Communication Security Analysis Of RFID System

The world has begun to enter the era of Internet of Things, and Radio FrequencyIdentification (RFID) technology as one of the key technologies of Internet ofThings, is considered one of the most promising technology in this century.Compared with the passive RFID system, the active RFID system has advantages oflonge distance of dentification, low transmit power, strong anti-interferencecapbilities, large data volume and fast rate of transmission and so on. So the activeRFID system has a great potential of development in fields of highway toll, modernlogistics and personnel management.The paper firstly analyzes the applicaition and development of RFID systems athome and abroad. A RFID security authentication scheme with dynamic encryptionbased on security chips is proposed, and this scheme is able to achieve these goalsof software’s anti-piracy, data’s security encryption and the identification of legalidentities. The hardware structure of the2.4GHz active RFID system is elaborated,and the circuit of reader, tag and radio frequency module is designed using AltiumDesigner Winter09. Then the schematic drawing, PCB layout and purchase andwelding of components are completed, and issues which should be paid attention to inthe PCB design are summed up. Finally the software’s design and implementationof the active RFID system is described, and reader and tag’s program are wirttenusing C language, respectively, in the Keil uVision3and the IAR430buildenviromment.After debugging and testing, the reader of the system have a good capacity ofidentification of tag, and ensure the safety. It achieves the expected goals.