基于ZigBee 的WSN 定位系统

研究设计了基于ZigBee技术的无线传感器网络定位系统．该方案以TI公司的CC2430／CC2431为核心芯片，结合外围元器件设计网关、参考节点和定位节点模块．详细论述了定位系统的硬件原理和软件设计思想，给出系统原理图和软件设计流程图，以IAREmbeddedWorkbench为平台进行系统软件的开发．采用改进的DV-Distance定位算法，通过仿真比较改进的DV-Distance定位算法与传统算法，验证改进的DV-Distance定位算法可提高定位精度和效率．结果表明该方案是可行的，适合实际应用．

WSN Localization System Based on ZigBee

We researched and designed WSN localization system based on ZigBee. This plan used CC2430/2431 of TI Company as core chip; gateway, reference node and blind node module were designed combined with peripheral components. The hardware principle and software design of the localization system was discussed, and present the principle diagram of system and software design flow chart. IAR Embedded Workbench was used as platform to develop system software. We adopted improved DV-Distance algorithm as location algorithm. What＇s more, the improved DV-Distance algorithm was compared with traditional algorithm by simulation, and the results show that improved DV-Distance algorithm could improve location accuracy and efficiency. So the scheme designed is feasible, and it is suitable for practical application.