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

A technology of real-time measurement and mechanical energy, which is applied in the field of sports biomechanics-rehabilitation engineering, can solve the problems of being unable to capture the changes in the mechanical energy of the moving human body and the work efficiency of links in real time, the cumbersome and complicated data collection and processing, and the single test site, etc., to achieve Improve applicability and safety, simple structure and convenient operation

Inactive Publication Date: 2021-01-12
TONGJI UNIV
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  • Application Information

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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 i...

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

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Embodiment 1

[0065] A method for measuring the mechanical energy of a moving human body in real time, which has the characteristics of simple structure, convenient operation, low cost and small space restrictions, and specifically includes the following steps:

[0066] S1. Obtain the human bone joint points of the target human body during the movement process captured by the depth sensor, normalize the movement direction of the human bone joint points and set the corresponding bone coordinate system;

[0067] S2. Divide the outline of the joint points of the human skeleton that have completed the normalization of the motion direction, and identify the coordinates of the joint points of the skeleton in combination with the skeleton coordinate system, and divide the joint points of the human skeleton into multiple links;

[0068] S3. Obtain anthropometric data, determine the link length of the link, and calculate the link mass of each link according to the percentage of the link mass in the b...

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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...

Claims

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Application Information

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IPC IPC(8): A61B5/11
CPCA61B5/1118A61B5/1128
Inventor 牛文鑫黄尚军王宽李亚琦沈以昕
Owner TONGJI UNIV
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