Date Added: Sep 2011
Recently, auto Identification system develop strongly and apply a lot of fieds. The almost system in there is Radio Frequency IDentification (RFID) system. According to the chip and wireless technological fast-growing, system RFID becomes more and more improve every aspect. However, putting reader anywhere to carry out better combined operations is the trouble problem. When readers using the same frequency are not arranged suitably, the same query signal of numbers of readers in interference area causes coincidence data on server or is distorted or causes collision between tag - tag, tag - reader and reader - reader.