| 摘要 |
A system and method are described herein for detecting a user's transition between sitting and standing postures. Transitions between sitting and standing states are reliably detected using an acceierometer attached to the user. By modeling error introduced by the acceierometer, and correcting for this error, transitions between sitting and standing states are reliably detected. A microprocessor coupled to the acceierometer converts the captured acceierometer data to approximate vertical acceleration. Vertical velocity, which includes acceierometer error, is determined from the approximate vertical acceleration. The vertical velocity is corrected, and the corrected vertical velocity used to determine vertical displacement. Transitions between sitting and standing states are determined from the vertical displacement. |
