DETERMINING DIRECTION OF MOVEMENT OF AN ACCELERATION SENSOR

摘要

The invention relates to a device and a method for determining a direction of movement (DOM) of a person carrying a portable acceleration sensor. The direction of movement (DOM) characterizes the motion direction of the person' s movements at certain points in time. By utilizing that the person's movement in directions other than the direction of movement (LAT) averages to zero over a given time interval, the forward direction of movement can be determined. The direction of movement (DOM) can be determined under the constraint of minimizing the displacements in a direction perpendicular to the direction of movement or by ensuring that the accumulated displacement perpendicular to the direction of movement (LAT) approximates (LAT) zero or is below a given threshold value.