摘要
基于超高频(UHF)射频识别(RFID)ISO/IEC 18000-6C协议的防碰撞Q算法存在标签数和所选时隙数不确定的局限性,使得系统自适应能力不足。通过先理论估算标签的数量,并计算该标签下的最佳时隙,后在软件上优化估算的标签数,对Q算法进行改进。在AS3992专用集成电路读写器芯片和STM32f103微控制器组成的实验平台上验证,实验结果表明:与原算法相比,改进算法在不降低识别效率和不增加平均功耗的情况下自适应能力有所提高,且估算标签数量误差控制在10%以内。
Because the anti-collision Q-algorithm based on ultra high frequency（UHF） RFID ISO/IEC 18000-6C protocol has uncertain limitationoftags and time slot numbers, self-adaptive ability of the system is insufficient Q algorithm is improved by estimating the number of tags, and calculating optimum time slots towards the tags. The proposed algorithm is verified on experimental platform composed of reader ASIC AS3992 and STM32f103 microcontroller. Experimental result shows that compared with original algorithm, self-adaptive ability is improved and error of estimating tags quantity is controlled within 10 % without reducing recognition efficiency and increasing average power consumption
出处
《传感器与微系统》
CSCD
北大核心
2013年第3期7-10,共4页
Transducer and Microsystem Technologies
基金
国家"863"计划资助项目(2011AA040102)
国家科技重大专项基金资助项目(2010ZX03006-003-02)
