Begg R K, Wytch R, Major R E
Department of Biomedical Physics and Bioengineering, University of Aberdeen, Foresterhill, UK.
J Biomed Eng. 1990 Sep;12(5):383-8. doi: 10.1016/0141-5425(90)90021-e.
A microcomputer-based video vector system has been developed to display the resultant ground reaction force vector on a television image of the subject in real-time. For each television field the force platform signals are acquired and processed and the resultant force vector superimposed on the video image of the walking subject. The force platform results are stored on disc and the composite video signals recorded on video tape for further analysis. The system is easy to set up and use and the results can be readily interpreted. The external moments produced at the joint centers by the ground reaction forces can be observed visually and, if required, quantification of the external moments can be achieved following data collection. The spatial resolution of the system is 0.342% vertically and 0.156% horizontally. The force vector visualization technique has routine applications in orthotics and prosthetics. It is also a useful technique for the teaching of biomechanics.
已开发出一种基于微型计算机的视频矢量系统，用于在受试者的电视图像上实时显示合成的地面反作用力矢量。对于每个电视场，采集并处理力平台信号，并将合成力矢量叠加在行走受试者的视频图像上。力平台的结果存储在磁盘上，复合视频信号记录在录像带上以便进一步分析。该系统易于设置和使用，结果也易于解释。由地面反作用力在关节中心产生的外力矩可以直观地观察到，如果需要，在数据收集后可以实现外力矩的量化。该系统的空间分辨率在垂直方向为0.342%，在水平方向为0.156%。力矢量可视化技术在矫形器和假肢领域有常规应用。它也是生物力学教学的一种有用技术。
