Using Pre-Detection Technique Towards An Efficient RFID Tag Anti-Collision Algorithm

• Main Authors: Chih-hung Tsai, 蔡志鴻
• Other Authors: Chiu-Kuo Liang
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/74832732361786926417

碩士 === 中華大學 === 資訊工程學系碩士在職專班 === 100 === RFID is a wireless non-contact system that uses radio-frequency for automation identification, mainly formed by a reader and lots of tags or labels. Electronic label collisions will cause the reader is unable to effectively identify each unique electronic label of electronic label identifier , therefore its need an effective anti-collision technology for accurately identify each electronic label , this issue has been the focus of many scholars committed to research . In this paper focus on improving anti-collision electronic labels Wireless Radio Frequency Identification (RFID) technology. The content of study are more effective detection in advance signal processing method , combination of two anti-collision algorithm , Query Tree Algorithm [2,8,11,16,17,18] and ALOHA algorithm [10,14,20,21] . Detection in advance signal processing method is added before electronic label (Tag) reply its unique tag identification (UID) to find out in advance which tags are collide and idle, so that only recognized electronic label (Tag) respond to the reader, thus reducing the wasted time for the reader to read tags collision and idle and the time of the tags to reply its unique tag identification (UID) , this lead increase the read efficiency of electronic label identification. This paper, in the final has made performance assessment, a simulation results show that parallel data broadcasting transfer (PDBT) regardless of the high-density or low-density RFID environment are better than hybrid query tree (HQT) [8] and enhance hybrid query tree (HQT)[9]. Keyword : RFID、Collision、ALOHA Protocol、Query Tree Algorithm、A Pre-Detection Broadcast Tag Anti-Collision Protocol、Hybrid Hyper Tag Anti-Collision Algorithm .