Saber-Sheikh Kambiz, Bryant Elizabeth C, Glazzard Charlotte, Hamel Alicia, Lee Raymond Y W
Clinical Research Centre for Health Professions, University of Brighton, Aldro Building, Darley Road, Eastbourne BN20 7UR, UK.
Man Ther. 2010 Feb;15(1):122-5. doi: 10.1016/j.math.2009.05.009. Epub 2009 Jul 25.
The aim of this study was to determine the suitability of inertial sensors for motion analysis research. Inertial sensors (Xsens Technologies, Netherlands) consisting of 3D gyroscopes, accelerometers and a magnetometer were compared against an electromagnetic motion tracking system (Fastrak, Polhemus, USA) for measuring motions of an artificial hinge joint and random 3D motions. Subsequently, to assess the feasibility of using inertial sensors for human motion analysis, the movements of the hip joint during walking were recorded in 20 normal asymptomatic subjects. The comparative study demonstrated good agreement between the inertial and electromagnetic systems. Measurements obtained for hip joint movement during walking (flexion, extension and step length) were similar to those reported in previous studies (flexion 38.8 degrees , extension 6.6 degrees , step frequency 1.02Hz). We conclude that the inertial sensors studied have the potential to be used for motion analysis and clinical research.
本研究的目的是确定惯性传感器在运动分析研究中的适用性。将由三维陀螺仪、加速度计和磁力计组成的惯性传感器（荷兰Xsens Technologies公司）与用于测量人工铰链接头运动和随机三维运动的电磁运动跟踪系统（美国Polhemus公司的Fastrak）进行比较。随后，为评估使用惯性传感器进行人体运动分析的可行性，对20名正常无症状受试者行走过程中的髋关节运动进行了记录。对比研究表明，惯性系统和电磁系统之间具有良好的一致性。行走过程中髋关节运动（屈曲、伸展和步长）的测量结果与先前研究报告的结果相似（屈曲38.8度，伸展6.6度，步频1.02Hz）。我们得出结论，所研究的惯性传感器有潜力用于运动分析和临床研究。
