Method and apparatus for the activation or adjustment of the occupant - or pedestrian - protections of motor vehicles, in the case of an impact of the motor vehicle on an obstacle

摘要

Method for activating or adjustment of the occupant - or pedestrian - protections of motor vehicles, in the case of an impact of the motor vehicle on an obstacle, in which process the relative speed of the motor vehicle in relation to the obstacle, as well as an effective mass of the obstacle is determined, and in the activation or adjustment of the protection systems is taken into account, characterized in that the course of a force is determined which, at the beginning of the impact on at least one elastic body (42, 44) which acts with a known spring characteristic, that subsequently, from the course of the force and the spring characteristic, a deformation of the body (42, 44) is calculated from the course of the force and the deformation path is calculated the spring energy, the of the kinetic energy of the motor vehicle and of the obstacle, and that from the spring energy, the relative speed and the known mass of the motor vehicle, the effective mass of the obstacle (20) is calculated.