基于ZigBee的三维定位系统设计与实现

摘要

This paper researches on and designs a three-dimensional positioning system based on ZigBee. In the system, the measuring distance method with the received signal strength indication is used with the maximum likelihood method to calculate the position of the unknown node. The ZigBee module with the chip CC2530 of TI company is used in the hardware of node. ZigBee net-work’ s coordinator, reference node and unknown node are programmed, based on Z-Stack protocol to realize the function of col ec-ting the location information of the unknown node. And the PC program is used to calculate the position of the unknown node based on the obtained information. Then the experiment result shows that the scheme can be used to achieve the function of the node’ s three dimensional positioning.%研究设计了基于ZigBee的三维定位系统。定位系统采用基于接收信号强度指示( RS-SI)的测距方法，并采用极大似然估计法计算未知节点的位置；节点硬件采用以 TI 公司的CC2530芯片为核心的ZigBee模块，并在Z-Stack协议栈基础上编写了ZigBee网络协调器、参考节点和未知节点的程序，实现了未知节点采集定位信息的功能；定位管理计算机根据未知节点采集到的定位信息实现了未知节点的位置解算功能，并通过实验测试证明了该方案可以实现节点的三维定位功能。