基于OSMDroid地图引擎的传感器数据实时可视化方法研究

Research of Real-Time Visualization of Sensor Data Based on OSMDroid Map Engine

随着物联网和移动实时地理信息系统的发展,基于地图的传感器实时监控系统将成为管理物联设备的新途径,而传感器数据的实时可视化是提高监管效率的主要方法。该文提出一种以开源OSMDroid(Open Street Map)为地图平台,基于自定义矢量地图符号实时展示传感器数据的方法,并在Android移动终端上实施验证。该方法利用可缩放矢量图形(Scalable Vector Graphic,SVG)将传感器设备抽象为自定义矢量地图符号,根据传感器数据类型设计地图符号图元与传感器数据的映射规则,据此在地图上实时刷新传感器设备地图符号。地图符号的视觉变量随传感器数据实时改变,从而实现传感器数据的实时可视化显示。实验结果表明,通过地图符号实时可视化传感器数据可有效提高传感器设备管理效率,及时获取设备数据,为传感器设备管理提供一种直接有效的途径。

With the development of Internet of things and mobile real-time geographic information system,it′s highly possible that real-time sensor monitoring system based on map becomes a new way of managing equipments in the Internet of things,while real-time visualization of sensor data is a main method to improve the efficiency of regulation.In this paper,a method of displaying real-time sensor data which based on the custom vector map symbol,using an open source OSMDroid(Open Street Map)as the map platform is presented,and the authentication is implemented in Android mobile terminal.The method uses SVG(Scalable Vector Graphic)to draw custom vector map symbol on behalf of the sensor device.The mapping rules between map symbol and sensor data are designed on the basis of the sensor data type,according to which the map symbol of sensor device is refreshed in the map.The visual variable of map symbol changes with the sensor data in real time,so as to realize the real-time visual display of sensor data.The experiment result shows that by realizing real-time visualization of sensor data through the map symbol and timely accessing to device information the method can effectively improve management efficiency of sensor equipments,which provides a direct and effective way for sensor equipments management,and has a wide range of application scenarios.