Patent ID: 8164847
Filing Date: 2012-04-24
Classification: G01P,G11B

Abstract:
1. A fall detection device for detecting a fall on the basis of an output signal of an acceleration sensor, the fall detection device comprising: a fall start monitoring unit configured to monitor and determine whether or not the fall detection device is in a fall start state in which a signal indicating the absolute value of a differentiation value of acceleration exceeds a given threshold value or is within a given range; a low-gravity transition detection unit configured to detect whether or not the fall detection device is in a period of transition from the fall start state to a low gravity state in which the signal indicating the absolute value of a differentiation value of acceleration is close to 0 relative to a given threshold value within a given period of time; and a falling state detection unit configured to detect a falling state in which the low gravity state continues for a given period of time or longer.