基于ZigBee心电监护网络定位方法的研究

Research on localization method based on ZigBee monitor network of electrocardiograph

提出了一种利用TDOA技术和bounding box算法相结合的节点定位方法。通过对ZigBee心电监护网络模型的分析,利用超声波测距方法实现了心电监护网络内未知终端节点与路由器节点的有效距离测量,并利用bounding box算法计算出终端节点的坐标值。给出了定位方法实现过程的具体描述并进行了系统测试实验。结果表明该方法定位精度较高,可以满足心电监护网络定位要求,有较好的推广价值。

This paper designed a kind of node localization method by making use of TDOA technology and bounding box algorithm. Based on the analysis of ZigBee electrocardiograph telemonitoring network model, realized effective distance measurement between terminal and router by using ultrasonic-radio ranging method. And calculated terminal coordinate by bounding box algorithm. There was detailed description and system testing of location method. The result indicates that the localization method has high precise and good practical significance and this method can greatly meet the location requirements of the telemonitoring network.