Rigid body movement tracking system on basis of inertial sensor and method for operating rigid body movement tracking system

Abstract

The invention discloses a rigid body movement tracking system on the basis of an inertial sensor and a method for operating the rigid body movement tracking system. The rigid body movement tracking system comprises an inertial sensor node and a data acquisition and processing terminal. The inertial sensor node can be attached onto a rigid body. The inertial sensor node comprises the inertial sensor, a computation module and a wireless communication module. The data acquisition and processing terminal comprises a wireless communication module and a computer system. The rigid body movement tracking system and the method have the advantages that the inertial sensor node can be arranged on the rigid body by users, and sensor data can be acquired by the node in real time and can be wirelessly transmitted to the data acquisition and processing terminal; movement tracking and movement analysis algorithms are executed by the computer system after movement is completed, data are preprocessed, the acceleration of the inertial sensor node can be found out, the speed and movement tracks of the inertial sensor node can be computed, movement tracks of points can be restored on the basis of gesture of the inertial sensor node and relative positional relations between the other points on the rigid body and the sensor node, movement tracks of selected points on the rigid body can be ultimatelypresented, and translation and rotation in movement procedures can be analyzed.

Description

technical field [0001] The invention relates to inertial sensor perception recognition, motion tracking and motion analysis, in particular to an inertial sensor-based rigid body motion tracking system and a working method thereof. Background technique [0002] Motion tracking refers to tracking the motion state of the target object, mainly including measuring, tracking, and recording the motion trajectory of the target object in three-dimensional space. Current motion tracking solutions are mainly based on computer graphics and image processing technologies, ultrasonic, radar, laser and other positioning technologies, and inertial sensors. The most mainstream solutions are generally based on computer graphics and image processing technology. Through multiple cameras deployed in the three-dimensional space, the motion status of the moving object (usually with marker nodes) is recorded in the form of images, and then the computer system processes these image data, and finally...

AI Technical Summary

Problems solved by technology

At present, some motion tracking work based on inertial sensors mainly focuses on restoring the motion posture or motion trajectory of the target object, and lacks the analysis of the transition process between different states during the motion process. How to balance motion tracking and motion analysis is a topic worth exploring.

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