ZigBee通信节点在室内定位中的应用

Application of ZigBee Communication Nodes in Indoor Positioning

分析了几种主流无线定位技术的优缺点。提出了一种基于位置指纹法的定位原理,应用于ZigBee网络平台的室内无线定位方法。完成了ZigBee通信节点的软硬件设计,并在搭建的试验平台上对该方法进行了验证。试验结果表明,在不需要专用硬件设备的条件下,采用加权k近邻法,即可获得较好的定位效果。实际应用中,可采用增加网络接入设备和近邻数量的方法提高定位精度。

Advantages and disadvantages of some kinds of popular wireless positioning technologies were analyzed. Based on the implementation principles of location fingerprint method, an indoor positioning method applied in ZigBee network was proposed. The software and hardware of ZigBee nodes which make up the experiments bed for positioning test were designed. The experimental results show that the good positioning effect can be achieved by using weighted k nearest-neighbor without special devices. The positioning precision can be improved by increasing the numbers of network access devices and neighbors.