Rfid System Design In The Complex Environment

Radio Frequency Identification (RFID) technology is embedded with many modern techniques. It is used with radio frequency to realize dual wireless Communication so as to attain the goal of target recognition and data exchange. It is very important to study techniques in RFID, because of it's outstanding virtues such as use conveniently, data communication speedy, security highly. RFID technique is used in many fields. With the development of information technology, RFID's applications increase rapidly and widely. RFID will become one of the fundamental technology in the future information society. This paper study active RFID system in 2.45GHz, and design active tag, reader, Communication software in computer, anti-collision algorithm, RFID database and its management software. The system's working distance is nearly 80m.This paper describes the development trends in RFID firstly. By the study of basis theory in RFID, in design of hardware, this paper give a design of active tag and reader base on CC2430.Secondly, by the study and analysis of database, set up a corresponding model for the serial communication based on the design of the computer-side software. Anti-collision algorithm is studied in order to make the entire system work steady, a simulation of anti-collision algorithm base on VC is also studied. It's useful to the design of whole RFID system.In the end, active tag and reader are designed, and the whole system includes software on computer and database is tested, the system can identify tag at the distance of nearly 80m.it meets the need of its application.