| 摘要 |
#CMT# #/CMT# The device (11) has an acceleration sensor for producing a signal representing acceleration of an object provided as a vehicle (10) e.g. passenger car. A wheel impulse sensor produces another signal representing a rotation angle of a wheel of the object. The latter signal is subject to indirect comparison with the former signal for determining movement direction of the object. The former signal is generated using a functional unit that applies an acceleration impulse (15) to the object. The acceleration impulse is applied as braking deceleration or by increasing speed of the object. #CMT# : #/CMT# Independent claims are also included for the following: (1) a vehicle assistance system comprising a control unit for signal processing (2) a method for determining movement direction of an object. #CMT#USE : #/CMT# Device for determining movement direction of an object e.g. vehicle such as motor vehicle e.g. passenger car, truck and omnibus, in a vehicle assistance system i.e. vehicle parking assistance system (all claimed). #CMT#ADVANTAGE : #/CMT# The device allows accurate, stable and reliable determination of the movement direction and/or driving direction of the vehicle, during a start-up process of the vehicle with low acceleration. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic representation of an indicated parking trajectory and/or path for positioning a vehicle behind a parked automobile. 10 : Vehicle 11 : Object's movement direction determining device 12 : Parked automobile 15 : Acceleration impulse 16 : Movement distance. |
