Fall Detecting and Alarming Based on Mobile Phone

This paper presents a system for fall detecting using off-the-shelf electronic devices to detect the fall. We use a smart phone with an embedded tri-axial accelerometer sensor. Data from the accelerometer is evaluated with a decision tree model to determine a fall. If a fall is suspected, a notification is raised to require the user´s response. If the user hurts hardly and cannot respond, the system alerts pre-specified guardian with a message via SMS. Therefore, the fallen man can be cared immediately.