中国医疗设备2017，Vol.32Issue(9)：33-39,7.DOI:10.3969/j.issn.1674-1633.2017.09.008
基于永磁定位技术的三维腿部运动检测系统设计
Design of a Three-Dimensional Leg Motion Detection System Based on Permanent Magnet Positioning Technology
摘要
Abstract
Objective To design a kind of three-dimensional leg motion detection system based on permanent magnet positioning technology to achieve real-time display of leg motion. Methods Firstly, the three-axis magnet sensors were placed on the leg joints, and the small magnets were placed on the limbs which were connected to the leg joints, while the distance between the sensor and magnet was about 6 cm. The sensors were used to detect the magnetic induction intensity. The signal was gradually exaggerated and filtering processed, and was sent via the serial port to PC. Secondly, the magnetic induction intensity of the signal was converted into a voltage signal by LabVIEW software, and the voltage signal was combined with LM algorithm and PSO algorithm and was used for magnet source localization. Results The experiment for detection range of Magnetic sensor showed that when the distance between the sensor and magnet was about 6 cm, it could be considered as a magnetic dipole model and had no effect on the near magnet group. When the magnets were positioned within the average error of 1 cm, the entire system spent about 17.5 ms on finishing a complete data collection, which could basically meet the real requirements. The experiment for three-dimensional leg motion showed that the result was consistent with the examinee leg stance. Conclusion The three-dimensional leg motion detection system based on permanent magnet leg positioning technology can achieve three-dimensional leg motion detection function, which provides a new method for detecting gait and leg rehabilitation training.关键词
运动检测/永磁定位/三轴磁传感器/定位算法Key words
motion detection/permanent magnet positioning/three-axis magnet sensors/positioning algorithm分类
机械制造引用本文复制引用
张可,汤福南,李修寒,吴小玲..基于永磁定位技术的三维腿部运动检测系统设计[J].中国医疗设备,2017,32(9):33-39,7.基金项目
江苏省2015年度普通高校研究生科研创新计划项目(KYLX15_0938). （KYLX15_0938）
