Fall detection method, and corresponding wearable monitoring device and monitoring method

The invention provides a fall detection method, comprising the following steps of: 1) receiving data acquired by a three-axis acceleration sensor fixed at the chest position of a human body, and judging whether the human body changes from an upright state to a horizontal state according to a three-axis acceleration value; 2) judging whether the human body is in a nearly-horizontal state for a long time based on a Z-axis acceleration value of the following period of time when it is determined that the human body is changed from the upright state to the horizontal state; 3) judging whether the human body falls on the basis of a Z-axis acceleration difference value when it is determined that the human body is in the nearly-horizontal state for a long time. The invention also provides a corresponding wearable monitoring device. The fall detection scheme of the invention is particularly suitable for chest-worn devices, with low calculation complexity, excellent real-time property and high judgment accuracy. The we