基于RFID与WsN的空间定位研究

摘要

为获得对象的位置信息,用RFID与WSN来研究室内空间定位技术.实验表明,在RFID读写器的工作范围内,各轴定位误差均在1 m之内,而利用WSN则在4 m范围内各轴定位误差在1 m之内,4 m之外定位效果较差.在此基础上,提出RFID结合WSN的定位方法,由RFID大范围粗略定位,再由WSN小范围精确定位.实验证明,RFID结合WSN定位效果相较于单独使用RFID或者WSN均有了较大的提高.%To obtain the position information of the object, RFID and WSN are used to study the indoor space positioning technology. The experimental results show that the error of each axis is with a tolerance of less than 1 m in the working range of RFID reader. Only when WSN within the range of 4 m is used, the error of each axis is with a tolerance of lass than 1 m, but the positioning result is not good and its range is over 4 m. On this basis, the method of combination of RFID and WSN is proposed. RFID is used for positioning roughly in a large range, and WSN is used for positioning accurately in a small range. The experiments show that the combination effect of RFID and WSN is better than that of RFID or WSN.