| 摘要 |
There is provided a method of warning a driver of a vehicle (200) when the vehicle (200) is traversing rumble features (20, 30, 40) demarcating tracks on a road surface (10). The method comprises steps of: (a) receiving accelerometer output signals (S1) from accelerometers (500a, 500b, 510a, 510b, 520a, 520b, 530a, 530b, 540a, 540b, 50a, 50b, 56Oa, 560b, 570a, 570b) spatially disposed at positions in the, vehicle (200) susceptible to vibrating in response to wheels (350a, 350b, 360a, 360b, 370a, 370b, 380a, 380b) of the vehicle (200) coming in driven contact with the rumble features (20, 30, 40); (b) receiving the accelerometer output signals (S1) at a processor (740), and using adaptive filters (1000) thereat for isolating signal components present in the accelerometer output signals (S1) indicative of the rumble features (20, 30, 40); and (c) monitoring in a logic unit (1100) of the processor (740) a temporal sequence (800) of occurrence of the signal components for determining whether or not the vehicle (200) is traversing the rumble features (20, 30, 40) and generating the warning signals when the sequence corresponds to the vehicle (200) driving off-track. |
