摘要:
A restraint system having a restraint device for protecting at least one passenger and a method for controlling a restraint system. The system and method act so as to to transform using a wavelet transformation, a signal measured by an acceleration sensor into a frequency range and in order to determine from the transformed signal the optimal triggering time point for the restraint device. For this purpose, the wavelet-transformed signal, on the one hand, is used for determining features in order to determine a crash type, and, on the other hand, to determine the braking acceleration energy. If the braking acceleration energy lies above a preestablished threshold value and if the identified crash type requires a triggering of the restraint system, then the restraint system is triggered.
摘要:
A method for triggering a restraining device in a motor vehicle is proposed, where a crash severity and an occupant categorization are implemented independently of each other. By linking the crash severity with the occupant categorization, the restraining device required for the vehicle occupants is triggered. The crash severity is subdivided in accordance with the triggering events frontal impact, side impact, rear impact or vehicle roll-over. A decisive advantage is that the crash severity is implemented independently of the occupant categorization.
摘要:
A method for triggering restraint devices in which at least one collision-indicating signal is generated. From the moment that a collision is detected, temporally defined crash phases are specified, and, for every crash phase, a crash type and a crash severity are determined from the signal. The appropriate restraint devices are triggered as a function of the crash severity and/or the crash type.
摘要:
A device for vehicle occupant protection. A processor connectable to at least two sensors may execute a deployment algorithm, and, in response to a failure of at least one of the sensors, may alter a sequence of execution of the deployment algorithm according to a point in time of the failure.
摘要:
A system for sensing a head-on collision in a vehicle, where at least one upfront sensor is used as plausibility sensor, which provides a plausibility signal for a collision sensor located in the control device. The upfront sensor may be an acceleration sensor, which analyzes both the acceleration signal as well as the speed signal derived therefrom for a plausibility check. The results of this check are linked in an OR-operation in order to generate a plausibility signal. In an example embodiment, it is provided to buffer-store the plausibility signal in the control device for a predetermined time. This is of special interest for improved reliability in the event that the upfront sensor has been destroyed.
摘要:
A method for triggering restraint devices in which at least one collision-indicating signal is generated. From the moment that a collision is detected, temporally defined crash phases are specified, and, for every crash phase, a crash type and a crash severity are determined from the signal. The appropriate restraint devices are triggered as a function of the crash severity and/or the crash type.
摘要:
A method of classifying an obstacle on the basis of pre-crash sensor signals is described, acceleration and acceleration change being determined from the obstacle velocity, and the obstacle is classified on the basis of these parameters. The deployment algorithm is tightened as a function of this classification; if appropriate, restraining means are deployed at an early stage and an automatic braking and/or steering intervention takes place.
摘要:
A method is described for generating at least one feature for an occupant protection system, which is determined from at least one basic feature and analyzed for generating a triggering signal for an occupant protection device, and a corresponding device. During normal operation, at least one short-term window integral is calculated from the at least one basic feature and used as a starting value for calculating a corresponding long-term integral when a starting condition for a crash operation obtains, the at least one long-term integral being made available to a following method as a feature for generating the triggering signal for the occupant protection system.
摘要:
A device for triggering a second airbag stage as a function of at least one occupant variable and a crash severity, the crash severity being determined as a function of an impact velocity of occupants onto the airbag. In this context, the correlation between crash severity and impact velocity is formed on the basis of a standardized (standard) occupant.
摘要:
A method for determining the size of a leak in the liquid-containing tank device of a vehicle, in particular of a motor vehicle, the liquid influencing the pressure in the tank device by evaporation, with the following steps: generating a first pressure as a reference pressure in the tank device at a first instant, detecting a first pressure characteristic up to a second instant, generating a second pressure at a third instant, the first pressure and the second pressure being chosen to be different, detecting a second pressure characteristic up to the fourth instant, determining the pressure gradient of the first pressure characteristic at the second instant and of the pressure gradient of the second pressure characteristic at the third instant, determining the first pressure difference of the pressure at the second instant from the reference pressure, determining the second pressure difference of the pressure at the third instant from the reference pressure, computing the size of the leak depending on the determined pressure gradient and the pressure differences, and the assumption that the evaporation rate is constant in the tank device, and that a leak rate is established which is proportional to the square root of the respective pressure difference.