基于uSD卡的移动情境数据采集和汇报系统的设计与实现

Design and implementation of uSD card based mobile context data collection and reporting system

提出了一种基于uSD卡的移动情境数据采集和汇报系统。移动设备利用uSD卡与外部传感器节点通信,并将来自于内部和外部的情境数据汇报给远程数据库。提出了一种集中式的情境数据采集汇报调度算法,通过移动设备之间的协作来去除不同移动设备所汇报情境数据间的冗余,并提高情境数据采集的精度。定义了基于XML的传感器数据包描述语言,以克服外部传感器数据包的异构性。设计并实现了连接管理模块,支持在多种通信方式之间的透明动态切换。基于提出的情境数据收集和共享系统设计并实现了混合现实的PacMan游戏,游戏的试运行结果表明,本系统具有较好的实时性和可用性。

This paper presented a uSD card based mobile context data collection and reporting system.Mobile devices used uSD card to communicate with external sensor nodes,and reported the collected internal and external context data to the remote context repository.It proposed a centralized context data sensing and reporting schedule algorithm to eliminate the redundancy among the context data from different mobile devices and improved the collection accuracy by using the collaboration of mobile devices.To handle the heterogeneity of the sensor packet formats,defined an XML-based sensor packet description language.Designed and implemented a connectivity management module to support the transparent and dynamic switch among available communication methods.Built a mixed-reality PacMan game on the presented mobile context data collection and reporting system.The result of the game＇s trial shows that the presented system has good performance in real-time and usability.