motion capture device

Abstract

An embodiment of the present invention provides a motion capture device, including: a flow field vector sensor, used to collect surface flow field information caused by the motion of the measured object; an acceleration sensor, used to collect the resultant acceleration information of the measured object; a processor, It is used to perform data fusion with the resultant acceleration information of the measured object according to the surface flow field information of the measured object, and calculate the motion velocity, motion acceleration and gravitational acceleration component of the measured object, and calculate the measured object according to the gravitational acceleration component. Measure the attitude angle of the object. The embodiments of the present invention have the advantages of good robustness and long-term drift-free, and are suitable for motion capture of objects under test of different types and degrees of severity.

Description

technical field [0001] The present invention relates to the technical field of electronic detection, and more specifically, to a motion capture device. Background technique [0002] Motion capture technology is an important way of human-computer interaction, which plays an irreplaceable role in sports training, film and television production, health care, safety monitoring and other fields. Motion capture technology means include mechanical, optical, electromagnetic and inertial. The inertial motion capture method uses inertial sensors, including multi-axis gyroscopes, multi-axis accelerometers and multi-axis magnetometers, to measure and analyze the motion states of various parts of the human body. Thanks to the development of MEMS technology, inertial motion capture technology sensors have small size, low power consumption, and unlimited use scenarios. Wearable motion capture devices based on this technology have gradually become a research hotspot. [0003] However, ine...

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Problems solved by technology

[0003] However, inertial sensors are extremely susceptible to motion acceleration interference, resulting in inaccurate attitude calculations, and can only rely on integrals to calculate motion speeds, and there are unavoidable integral drifts. These problems have always plagued many researchers.

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