APPARATUS OF CHASING POSTURE OF MOVING MATERIAL OBJECT, METHOD OF CHASING POSTURE OF MOVING MATERIAL OBJECT, APPARATUS OF CHASING POSTURE OF TOOTHBRUSH AND METHOD OF CHASING POSTURE OF TOOTHBRUSH USING THE SAME

摘要

An apparatus for tracking an orientation of a moving object in a three-dimensional space having a z-axis facing a reference surface of the moving object, an x-axis perpendicular to the z-axis in a virtual vertical plane including the z-axis, and a y-axis perpendicular to the x-axis in a virtual horizontal plane including the x-axis is described. A reference surface direction determination unit detects which direction the reference surface is facing with the x-axis as an axis of rotation. The x-axis deviation determination unit detects how far an x-axis direction of the moving object is relatively deviated from a magnetic north direction. The determination unit determines the orientation of the moving object based on how far the x-axis of the moving object is deviated and which direction the reference surface is facing in response to detection signals of the reference surface direction determination unit and the x-axis deviation determination unit.