【摘要】 在射频识别系统中,为了防止多个射频卡同时与读写器交换数据所引起的冲突,需采用一定的防冲突算法。基于时隙的算法可以用软件快速、有效地实现防冲突。介绍了该算法的基本原理,重点设计了在读写器端实现防冲突的方案。采用该方案的读写器目前已投入市场,它最多可同时识读16张射频卡,并能够根据不同应用动态调整总时隙个数,减少通信时间。更多还原

【Abstract】 In the Radio Frequency Identification( RFID) system, the anticollision algorithm must be used to avoid the data collision caused by the data transaction between more than one RF card and reader at the same time. The algorithm based on timeslot can realized anticollision quickly and efficiently just by using software. The algorithm’s basic principle is introduced. A scheme of how to realize the anticollision in reader is designed. The reader based on it can read 16 cards one time at most and can dynamically adapt the total timeslots according to different application, which reduces the communication time.更多还原