基于物联网的无线实时定位系统的设计与实现.docVIP

基于物联网的无线实时定位系统的设计与实现 　　摘 要： 为了达到解决无线实时定位的研究目的，引入ZigBee和CC2530芯片技术，利用RSSI测距研究方法分析了接收信号强度与信号传输距离的关系，并结合三边定位算法，在上位机定位软件上进行仿真实验，通过设置参考节点坐标，可在调试信息框中得到移动节点的测距、定位等过程性实验结果。通过多次仿真实验模拟，得到了该方法能通过追踪移动节点坐标，较为有效地实现参考节点与移动节点之间的信号强度测量与实时定位等结论。该文创新点是系统运用先进的微功耗技术与RSSI测距技术，内嵌集成独有的实时定位算法，采用高增益、抗干扰射频电路设计而成，可连续上电运行，能较好地满足室内环境实时定位的功能要求。 　　关键词： ZigBee； CC2530； RSSI； 三边定位算法 　　中图分类号： TN915?34 文献标识码： A 文章编号： 1004?373X（2016）24?0079?04 　　Design and implementation of wireless real?time positioning system based on 　　Internet of Things 　　DU Yuankun1， WANG Lei2 　　（1. Department of Information Engineering， Zhengzhou College of Science Technology， Zhengzhou 450064， China； 　　2. Department of Basic， Zhengzhou College of Science Technology， Zhengzhou 450064， China） 　　Abstract： To achieve the purpose of wireless real?time positioning， ZigBee and CC2530 technologies are introduced in the system design. the relation between received signal strength and signal transmission distance is analyzed by using the RSSI range finding technology. With the help of trilateral positioning algorithm， the simulation experiments were carried out on positioning software in upper computer. By setting reference node coordinate， some experimental results， such as the mobile node′s range finding and positioning， can be obtained in debugging information box. After some experiments， the conclusion that this method can effectively realize the signal strength detection and real?time positioning between reference node and mobile node was obtained by tracing the mobile node coordinate. The innovation point of this paper is that this system can power?on operation continuously and satisfy the functional requirements of real?time location in indoor environment by utilizing the advanced micro?power consumption technology and RSSI range finding technology， real?time positioning algorithm particular in embedded integration， high gain and anti?interference radio?frequency circuit design. 　　Keywords： ZigBee； CC2530； RSSI； tri