Research On RFID Key Technology And Application

RFID is an automatic identification technology,which comprehensive use of many fields of science and technology,such as the application of electromagnetic theory,antenna technology,wireless transceiver technology,microwave technology,data coding and decoding technology.It has advantages of efficient,reliable,fast,non line of sight reading and can work in harsh environments,is widely used in data acquisition and object recognition.At present,the key technologies of anti-collision algorithm,antenna design is one of the hottest research topic in RFID field.In this paper,firstly,introduced the background and significance of the RFID technology,and reviewed the research of RFID in China and foreign.Secondly,on the basis of the analysis of the RFID system,studied the two key technologies of anti-collision algorithm and antenna design in the key technologies of RFID.Finally,on the basis of the project which I participated,analyzed the application of RFID in the parking management system and studied the design of the system.In the identification range of the reader,when there are 2 or more than 2 of the tags communication with reader,due to the different signal aliasing and interference makes the tag can not be correct recognition by reader,so resulting in collision and reduce system efficiency.Therefore,in order to solve the problem of low efficiency of electronic tag identification in RFID system,in this paper,based on the randomness of ALOHA anti-collision algorithm as the research object,a new ALOHA anti-collision algorithm is put forward on the efficiency,stability and application of the system.Also,the feasibility of the new algorithm is analyzed by MATLAB simulation,and the main advantage of the algorithm is analyzed.With the rapid development of electronic technology,many new systems of electronic systems continue to emerge,which is also a new challenge to the antenna,especially the recent antenna mostly towards miniaturization,high gain direction.Therefore,in order to solve the problem of large volume and short identification distance in RFID system,in this paper,designed a microstrip antenna with a slot on the surface,and studied and simulated the performance of rectangular microstrip antennas with different rectangular slots.The results show that: The reflection coefficient,the bandwidth and the gain of the rectangular slotted microstrip antenna are better than the rectangular microstrip antenna,and the size of the slotted microstrip antenna is much lower than that of the non slotted microstrip antenna.Therefore,in the application of RFID,this kind of antenna is helpful to increase the identification distance and reduce the volume of RFID antenna.In addition,based on the application research of RFID parking management system,in this paper,combining with the project which I involved,detailed analyzed the implementation process of anti-collision algorithm and antenna in the system which mainly on the design of parking management system.It shows that RFID technology has a great value in the parking management system.