摘要
室内定位是智能家居系统中实现居境信息自主巡检的基础支撑技术。针对现有室内定位算法的不足,提出了一种基于RFID的新型室内定位方法。该方法建立基于RFID标签映射的地面坐标,借助电子罗盘获取车载系统方向,通过向量方法计算出车载系统的中心位置,有效地解决了室内定位的精度与稳定性问题。基于该方法,设计并实现了一个室内车载监控系统,验证了算法的有效性。
Indoor positioning is one of the key techniques for supporting home environment inspection over smart home.We presented a RFID based indoor positioning method and implemented a smart vehicle system with it to support spontaneous home environment monitoring.In the proposed approach,we first built up an indoor coordinate system using a set of deployed RFID tags,and then dynamically detected the moving direction of vehicle system with an electronic compass.We further presented a vector projection algorithm to compute the center location of the vehicle system,thus improving the precision of indoor positioning.The real performance of the implemented vehicle system shows that our proposed RFID based indoor positioning method can work effectively and efficiently.
出处
《计算机科学》
CSCD
北大核心
2012年第2期29-33,共5页
Computer Science
基金
国家自然科学基金(60903025)
江苏省科技支撑计划(BE2010179)
江苏省自然科学基金(SBK200921645)资助
关键词
室内定位
RFID
电子罗盘
向量投影算法
Indoor positioning
RFID
Electronic compass
Vector projection algorithm
