| 摘要 |
The invention provides a method and mobile phone of identifying at least one of a security or emergency critical situation of a user of a mobile phone, the mobile phone comprising at least one acceleration sensor, the method comprising the steps of: obtaining at least one acceleration signal from said at least one acceleration sensor representing a current situation of the mobile phone; pre-processing said obtained at least one acceleration signal to remove redundant information present in said at least one signal; performing a feature extraction on said pre-processed at least one acceleration signal; performing a shock detection based on the acceleration pattern represented by the extracted acceleration features; and performing a subsequent mobile phone activity detection if a shock is detected in step (d); wherein a security or emergency critical situation is identified if the shock is followed by a period of no or low activity.
|
