利用加速传感器估算竞走运动员的步长与步频

运动捕捉技术是体育训练和教学的有力助手,可以通过捕捉运动参数来辅助教练员对训练效果做出评价和调整.基于三轴加速度传感器提出一种计算竞走步长及步频的算法,实时捕捉运动员的三轴运动信息,并采用低通滤波法剔除采样数据中的噪声干扰.基于步态周期内加速度曲线求解步频值,并建立了竞走单步步长的计算模型.测试数据表明:计算的步长和步频值准确度高、误差较小;获取训练中竞走运动员每一步态的步长和步频值,可以检测运动员技术结构的稳定性进.

Estimating walking athlete's step length and step frequency based on the acceleration sensor

Sports capture technology is a powerful assistant for sports training and physical education teaching,which can capture the motion parameters and assist the coaches to evaluate and adjust the training effect.Based on the three-axis acceleration sensor,an algorithm is designed to calculate the walking step length and step frequency.The three-axis motion information of the athlete is captured,the noise interference of the sampled data is eliminated by the low-pass filtering method,the step frequency is solved based on the acceleration curve in the gait cycle,and the calculation model of the walking step is established.The test data show that the calculated step size and step frequency are high and the error is small.Obtaining the step size and step frequency of each gait can detect the stability of the technical structure of the walking race in the training and improve the training efficiency.