计算机工程 ›› 2012, Vol. 38 ›› Issue (9): 258-261.doi: 10.3969/j.issn.1000-3428.2012.09.079

• 开发研究与设计技术 • 上一篇    下一篇

基于调度方式的多阅读器防碰撞算法

孙文胜,胡玲敏   

  1. (杭州电子科技大学通信工程学院,杭州 310018)
  • 收稿日期:2011-09-09 出版日期:2012-05-05 发布日期:2012-05-05
  • 作者简介:孙文胜(1966-),男,副教授,主研方向:嵌入式系统,无线通信网络;胡玲敏,硕士研究生

Anti-collision Algorithm for Multi-reader Based on Schedule Mode

SUN Wen-sheng, HU Ling-min   

  1. (College of Communication Engineering, Hangzhou Dianzi University, Hangzhou 310018, China)
  • Received:2011-09-09 Online:2012-05-05 Published:2012-05-05

摘要: 已有防碰撞算法在无线射频识别系统的应用中存在功耗、成本较高等问题。为此,提出一种基于调度方式的多阅读器防碰撞算法。对调度方式防碰撞算法进行改进,采用分簇思想,结合预约、休眠机制实现传输阶段的无碰撞通信。仿真结果表明,与PULSE算法相比,该算法能够有效地避免阅读器的信号干扰,提高系统的读取效率,降低阅读器的功耗,且该优势随着阅读器数目的增多更加明显。

关键词: 无线射频识别, 防碰撞算法, 碰撞信息, 调度方式, 系统效率

Abstract: The existing anti-collision algorithms in Radio Frequency Identification(RFID) system application have the power consumption and high cost. In order to solve this problem, this paper proposes an anti-collision algorithm for the multi-reader based on schedule mode. The improved algorithm is proposed based on the anti-collision of scheduling, which adoptes the conception of cluster headers, the method of reservation and dormancy count, to realize the zero collision in the phase of transmission. Simulation results show that the proposed algorithm gains the advantage over PULSE protocol, which avoids the signal interference significantly, improves the reading efficiency, and meanwhile reduces the power consumption. With the number of readers increased, the superiority of the performance is more obvious.

Key words: Radio Frequency Identification(RFID), anti-collision algorithm, collision information, schedule mode, system efficiency

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