Method and device for compensating three-dimensional inertial motion sensing

Abstract

The invention discloses a method and device for compensating three-dimensional inertial motion sensing. The method comprises the following steps of: performing data acquisition on three-dimensional inertial motion by a three-dimensional inertial sensing system, thus acquiring three-dimensional sensing data of the three-dimensional inertial motion; performing data acquisition on the three-dimensional inertial motion by a two-dimensional sensor which synchronously works with the three-dimensional inertial sensing system, thus acquiring two-dimensional sensing data of the three-dimensional inertial motion, wherein the two-dimensional sensing data synchronously corresponds to the three-dimensional sensing data; compensating the three-dimensional sensing data with the two-dimensional sensing data in reference to a standard database or a correction compensation relation and / or a correction compensation parameters; and performing operation processing on the compensated three-dimensional sensing data, thus further acquiring positioning data of the three-dimensional inertial motion. The method is simple in implementation mode, low in cost, high in stability, high in precision and accurate in positioning and can be widely applied to motion detection.

Description

technical field [0001] The invention relates to the field of motion detection, in particular to a method and device for compensating three-dimensional inertial motion sensing. Background technique [0002] At present, there are more and more products that use three-dimensional inertial sensors to sense motion, because three-dimensional motion is closer to people's living habits. Motion sensing uses sensors to sense and capture motion positioning data, and then obtain corresponding motion. action. Initially, two-dimensional sensors were used for two-dimensional motion sensing. With the increasing demand for three-dimensional motion sensing and the development of technology, the three-dimensional inertial motion sensing system has successfully broken through the limitations of two-dimensional sensors and can detect three-dimensional motion. for sensing. However, because the inertial sensors used in the 3D inertial sensing system, including acceleration sensors and gyroscopes...

AI Technical Summary

Problems solved by technology

However, because the inertial sensors used in the 3D inertial sensing system, including acceleration sensors and gyroscopes, do not use external reference information for compensation and correction, zero point drift, system accuracy degradation, reliability noise, linearity errors, and quadrature errors will occur under long-term use. , temperature drift and other issues, and the magnetic sensor used in the three-dimensional inertial sensing system is also affected by the environmental magnetic field, and the test data is also unstable

Therefore, the current 3D inertial sensing system cannot sense motion stably and accurately for a long time

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