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

摘要

A method for indicating the fall of a person. It uses two accelerometers which may be placed on different parts of the body. The method is characterized in that before attaching the accelerometers to the body, the signal of both accelerometers is measured at two stable positions differing by 90 degrees. The fall event is flagged after both accelerometers detected a maximum signal which is higher than twice the difference in the signal measured between the two stable positions differing by 90 degrees and when the time interval between the two maximum signals does not exceed 100 ms.