摘要
以改进的LANDMARC定位算法为核心设计了基于RFID技术的可视化系统,该系统包括职工作业区域可视化监控、列检场作业工步实时动态显示和职工信息管理3个模块.通过测试相同位置下接收信号强度指示值(receive signal strength indication,RSSI)的分布和分析最近邻居数目对定位精度影响,修正RSSI值和优化选取"最近邻居"值,进而实现对LAMDMARC定位算法的改进.现场试验验证表明:经过处理后的RSSI值更为集中且波动范围小,减弱了复杂环境中各种因素对RSSI值的影响并且提高了定位精度.
According to the location algorithm of improved LANDMARC,the visual monitoring system of train inspection operation field based on RFID is designed,and it consists of three mod-ules of visual monitoring for worker operation field,real-time dynamic display for operation proc-ess and staff information management.By testing of the distribution of RSSI value in the same position and the nearest neighbor number influencing on the positioning accuracy,the method of RSSI correction is advanced and the＆quot;nearest neighbor＆quot;k value is optimally selected,then LAMD-MARC algorithm is improved.Field experiments show that the read and corrected RSSI is more concentrated and its fluctuation range is smaller,reducing the influence of various complicated en-vironment factors on RSSI value and improving the positioning precision.
出处
《兰州交通大学学报》
CAS
2015年第4期33-39,共7页
Journal of Lanzhou Jiaotong University
基金
甘肃省高等学校基本科研业务费(213054)
甘肃省教育厅高等学校科研项目(2013A-049)
兰州交通大学青年基金(2013022)
关键词
改进的LANDMARC
列检作业场
RFID
铁路安全
改进的 LANDMARC
RFID
improved LANDMARC
train inspection operation field
RFID
railway safety
