一种基于RFID的化工危险品企业人员定位算法研究

A Research on RFID Based Location Algorithm for Dangerous Chemicals Enterprise Personnel

针对化工危险品企业无法全面、及时、准确地掌握厂区内人员实时分布信息,从而间接导致事故发生的问题。采用RFID定位系统,介绍了RFID阅读器拓扑网络定位算法,针对算法不足提出了结合VIRE定位算法的改进方法。通过在阅读器周围部署参考标签和虚拟标签来解决模型中目标标签同时被两个以上的阅读器识读的难题,最后找出目标标签的实时位置坐标。并采用使得定位精度更高的权重因子计算公式解决Ej=0的问题。实验证明:在复杂环境中与RFID阅读器拓扑定位算法相比改进算法在定位精度上有显著提高。

Being unable to have the comprehensive,timely and accurate personnel location information has indirectly led to accidents in the dangerous chemicals plants.With RFID location system,this paper introduces RFID reader topology location algorithm whose defects have been made up for by presenting an improved method combined with VIRE location algorithm.Through the deployment of reference tags and virtual tags around readers,it solves the problem of target tags reading by two or more readers simultaneously,and finally finds out the real-time location coordinates of the target tags and takes a higher accuracy calculation weighting factor to solute Ej=0.Experiments show that,in complex environment,compared with the RFID reader topology location algorithm,the improved algorithm has higher location accuracy.