摘要

This paper studies the working principle of the RFID system and the characteristics of the Manchester code. For the read-only RF card, data collecting and decoding by the double-edge triggered interrupt method, ensure that RFID reader can detect the effective level jumping, and ignore the "empty jump" that does not involves data transmission. The decoding method shows strong anti-interference ability, rapid decoding, high rate of data reading, and low misreading rate.