Human Balance And Motion Analysis Based On Force Measuring Platform And Kinect Device

The balance ability and posture control of the human body are important indicators which reflect the comprehensive quality of the human body.If the balance function of the human body is impeded,it will not only hinder the normal daily activities of the human body,but also followed by a series of other diseases,and even lead to the ability of the human body to lose its independent life.Therefore,analyzing the influence of internal factors and external environmental factors on human body balance and posture control is conducive to providing effective and accurate experiment basis for stability judgment.At present,clinical medicine mainly measures the balance of the human body and the stability of posture control through observation and scale methods,but such methods rely on the subjective feelings and experience of the researchers.Through the force measuring platform and the human body posture recognition device,accurate experimental data can be obtained,and the human body balance and posture control ability are objectively and accurately analyzed.In this paper,the following researches was done by using the force measuring platform and the Kinect device:By increasing the rotation control mechanism,using pulse frequency to control the speed and rotation angle of the platform,the static balance test is changed to the dynamic balance test.According to the influence of Gaussian white noise on human body balance control,four kinds of feature quantities such as radius of swing trajectory,length of swing trajectory,the swing rate in the medial/lateral direction and anterior/posterior direction are used as evaluation indicators for experimental analysis.It was found that human body's balance ability was different under different intensities of gaussian white noise.The research about the influence of visual feedback on human balance control is implemented.The balance control ability of different individuals under four conditions,static standing with eyes open(SO),static standing with eyes closed(SC),disturbed standing with eyes open(DO)and disturbed standing with eyes closed(DC),was analyzed through the dynamic force measuring platform.The power spectrum density(PSD)was used to analyze the balance ability in medial/lateral direction and anterior/posterior direction.Further more,from the perspective of human posture change,this paper collects human skeletal characteristics through Kinect device,and studies the balance control ability of human body in disturbed standing with eyes open and disturbed standing with eyes closed.At last,through analyzing the posture characteristics and gait characteristics,the human body's balance ability during normal walking and weight-bearing walking is studied.