摘要
射频识别（Radio Frequency Identification简称RFID）技术是从90年代兴起的一项自动识别技术。它利用无线射频方式进行非接触双向通信，以达到识别目标并交换数据。与磁卡、IC卡等接触式识别技术不同，RFID系统的电子标签和阅读器之间无须物理接触就可完成识别，因此它可实现多目标识别、运动目标识别，可在更广泛的场合中应用。
本文首先介绍了几种自动识别系统，对它们进行了较全面的分析与比较。分析了RFID系统的组成、分类、特点及在各个领域内的应用，论述了射频识别技术的工作原理，重点探讨了基于多址通信TDMA技术的RFID系统防碰撞机制及算法实现，并展望了RFID技术的发展影响。
关键词：自动识别系统；射频识别；防碰撞算法；时隙ALOHA
ABSTRACT
Radio Frequency Identification (RFID) is a new technology of Automatic Identification and Data Capture(AIDC) from last 90’s .RFID is used with wireless channel to realize dual communications. The object could be detected and traced without contact between the transponder and transceiver in RFID system that has successfully applied in the tracking and identification of multi-target applications.
In this paper, the popular AIDC technologies are discussed and the differences between them are analyzed in detail, then the principle of RFID system is analyzed in detail and the anti-collision for targets recognitions based on TDMA technology. The RFID will be a very usefully technology which is well suited for the AIDC fields.
Key words: AIDC system; RFID; Anti-collision; S-ALOHA
目录
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