METHOD FOR DETECTING THE CRITICAL POSITION IN ORIENTATION AND INDICATING THE CHANGE OF THE POSITION OF A HUMAN BEING BODY

摘要

The proposed method can be used in control systems for detecting the fall of a person. The method monitors the state of solitary aged people, or invalids that live in isolated rooms or within remote areas without attendance. The method uses an accelerometer as a sensor for detecting the critical position of the person, attaches the accelerometer to the person, monitors the position of the person by analyzing the output signal of the accelerometer, and detects the specified maximum value of the output signal of the accelerometer followed by the value of the output signal that is constant over the specified time interval. The method uses new, combinations of the output signals of the accelerometer, which permits to increase the accuracy of the detection reducing the effect of by nonlinear characteristics its and the nonuniform accelerations of the person as a result of velocity change, change of the direction, or collision with an obstacle.