Device and method for measuring mechanical energy from moving human body in real time

Abstract

The invention relates to a device and method for measuring the mechanical energy from a moving human body in real time. The method specifically comprises the following steps: S1, acquiring human bodyskeleton joints of a target human body, normalizing movement directions, and setting a skeleton coordinate system; S2, carrying out contour division, identifying coordinates of skeleton joints by combining with the skeleton coordinate system, and dividing the skeleton joints into multple links; S3, acquiring anthropometric data, and determining link length and link quality; S4, calculating the centroid of the links; S5, acquiring rotation information of skeleton joint coordinates, and calculating translation kinetic energy, rotation kinetic energy and potential energy of the links to serve asinternal work of target human body motion; S6, calculating a centroid movement track of the target human body, and calculating the kinetic energy and potential energy of the target human body according to the centroid movement track to serve as external work of the target human body motion; and S7, adding the internal work to the external work to obtain the mechanical energy of the target human body and the link acting efficiency of a single link. Compared with the prior art, the method has the advantages of simple structure, convenience in cost, small site limitation and the like.

Description

technical field [0001] The invention relates to the technical field of sports biomechanics-rehabilitation engineering, in particular to a device and method for real-time measurement of mechanical energy of a moving human body. Background technique [0002] Mechanical energy is the biomechanical indicator that contains the most information about human motion, and the analysis of mechanical energy and energy flow is of great significance for revealing the essence of motion generation. Mechanical power or energy has important applications in both sports science and rehabilitation medicine. In the field of sports science, the calculation of muscle efficiency through mechanical energy and energy consumption is a key indicator to evaluate the level of athlete's performance and technical rationality, for example, there are differences in the muscle efficiency of athletes of different levels. In the field of rehabilitation medicine, for the exercise strategy evaluation of neuropath...

AI Technical Summary

Problems solved by technology

This technology is not only expensive in equipment, but also cumbersome and complicated in data collection and processing, and the test site is single, and it cannot capture the changes in the link mechanical energy and link work efficiency of the moving human body in real time and quickly.

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