基于ZigBee网络的室内定位系统的设计与实现  

Design and implementation of indoor positioning system based on ZigBee network

作　　者：白旭华[1] 张瑞峰[1] 张肖萌[1] 王桂英[1] 

机构地区：[1]天津大学电子信息工程学院,天津300072

出　　处：《天津理工大学学报》2012年第2期11-15,共5页Journal of Tianjin University of Technology

基　　金：国家自然科学基金(60777014);教育部博士点基金(20090032110027);天津市应用基础及前沿技术研究计划(09JCZDJC25600)

摘　　要：针对当前室内定位系统成本高、精度低、可靠性差的缺点,设计出了一种基于ZigBee无线传感网络的无线室内定位系统.系统硬件以德州仪器公司CC2530片上系统为核心,软件基于德州仪器公司Z-Stack协议栈将测距标定与完整定位流程结合起来,通过测量接收信号强度计算待定位节点到参考节点的距离,然后利用三角形质心算法进行定位,确定待定位节点坐标.实际测试表明:该室内定位系统操作简单,可靠性高,定位精度达到25 cm以内,定位误差期望为9.76 cm.This paper designed a indoor positioning system based on the ZigBee wireless network,considering the weakness of existing products,such as high cost,low accuracy and poor reliability.The core of the hardware of this system is CC2530 system-on-chip produced by Texas Instruments（TI）,the software based on Z-Stack protocol Stack is also belongs to TI,which combines the distance-measuring calibration process and the entire localization process.First,calculate the distance between unknown node and reference nodes by measuring the receiving signal strength,then,determine unknown node coordinate using the triangle centroid localization algorithm.The actual test shows that the indoor positioning system is simple operation,high reliability.The positioning accuracy can reach within 25 cm,the positioning error expectations is 9.76 cm.

关 键 词：ZIGBEE 定位 测距 接收信号强度 

分 类 号：TN92[电子电信—通信与信息系统]