Research on Key Technologies of Tag Detection in Passive RFID System

On the basis of discussion of RFID system work principle, the method of calculation of minimum action magnetic intensity and its impact factor are proposed. To the tag read-write angle, the relationship between tag read-write range and its loss detection is analyzed. The value of detection rate on conveyor belt is tested by experiment. Two methods of improving tag detection are discussed. They are named multi-tag and multi-reader. The tag detection of single-tag, two-tag and three-tag are also tested by experiment. The feature of multi-reader is analyzed. They provide a good way for design and applications of RFID system.