基于VIRE的改进室内定位算法研究

Modified Indoor Location Algorithm based on VIRE

系统采用RFID射频识别技术和室内定位技术,实现对学生的运动轨迹的实时定位。现提出一种基于VIRE定位算法的改进算法,对学生的位置进行实时定位。针对目前传统的VIRE定位算法定位精度低,对环境适应性不足,从设定阈值的方法实现算法的“自动纠正”,优化VIRE定位算法。通过MATLAB仿真结果表明,在其他影响因子不变的情况下,改进的VIRE定位算法,最低误差降低了85.86%,在精度和稳定性上都有显著的提高。该算法应用于校园安全管理系统,学生通过佩戴内嵌电子标签的学生卡,对学生进行实时定位,家长可以通过系统看到自己孩子的位置,提高学生安全系数,有利于建立一个平安、和谐的校园环境。

The system,by adopting RFID radio frequency identification technology and indoor positioning technology,realizes real-time location of students'motion trajectory.A modified algorithm based on the VIRE localization algorithm is proposed,so as to implement real-time positioning of students’position.Aiming at the low positioning accuracy and insufficient adaptability to the environment by the traditional VIRE location algorithm,the“automatic correction”of the algorithm is realized by setting the threshold,and the VIRE location algorithm is optimized.Simulation results of MATLAB indicates that with the modified VIRE positioning algorithm,the minimum error is reduced by 85.86%,and the accuracy and stability are significantly improved under the condition that other influence factors are unchanged.The algorithm is applied to the campus security management system.By allowing students to wear student cards with embedded electronic tags,students can be positioned in real time,and parents can see their children’s position through the system,which helps to improve the safety factor of students and build a safe and harmonious campus environment.