基于头部永磁跟踪的计算机虚拟实现技术

A virtual reality technology based on magnetic tracking of head movement

根据永磁体在三维空间的特定分布规律设计了一种基于永磁跟踪的残疾人计算机辅助系统——一种跟踪头部运动的装置。使用时将三轴磁场传感器置于人头部,实时地接收永磁体的磁场信号,采用磁场跟踪算法,得到三轴磁场传感器相对于永磁体的空间位置和姿势,进而得到人头部的运动方向和角度,并将这些方向和角度作为控制信号,控制屏幕上的鼠标动作,帮助操作者通过人机交互界面实现电脑屏幕鼠标控制。

Based on the distribution law of magnetic in 3-D space, A computer assistant system for the handicapped people was designed in this paper. The instrument which can track the head movement was also designed. When used, the triaxial magnetic field sensor was put on the head, which can receive the information from the permanent magnets on real-time. According to the magnetic tracking algorithm, the position and orientation of the sensor were obtained, comparing with the permanent magnets. so, the head movement can be tracked. Using these signals, we can control the mouse＇s moving, and help the handicapped people operate the computer.