基于RFID与WSN的空间定位研究

Research on Spatial Location Based on RFID and WSN

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.