Abstract: A radar system for motor vehicles, having a radar sensor and an evaluation device for measuring distances and relative velocities of objects in the surrounding field of the vehicle, and a collision detection device, which, on the basis of the measured distances and relative velocities, recognizes an imminent collision and delivers data on the expected time of collision and the impact velocity to a precrash system. The radar sensor is switchable by the collision detection device to a velocity measurement mode in which a more precise measurement of the relative velocity is made.

Abstract: A method and device for estimating at least one characteristic which is derived from at least one base characteristic and which is evaluated for the generation of a triggering signal for a passenger protection device, a contact time is calculated at a first time after an impact has occurred, the curve of the at least one derived characteristic being ascertained in retrospect in a time span between the calculated contact time and the first time.

Abstract: A device for determining the instant a vehicle makes contact with an impact object. The device determines the instant of contact by approximating a signal derived from an acceleration signal using a function.

Abstract: Proposed is a device for triggering a restraining system in a vehicle, the device triggering the restraining system as a function of a mass estimate of an impact object. In this context, the device is configured such that it performs mass estimates as a function of at least one pre-crash signal, at least one vehicle datum, the own vehicle speed, and at least one impact signal.

Abstract: A safety system for vehicle occupants, having sensors for acquiring crash-relevant data such as acceleration and/or pressure values, having a control device, and having restraints, such as an air bag, safety belt, or the like. The safety system 1 has a connection to a navigation system of the vehicle. Data of the navigation system of the vehicle, such as in particular location data of the vehicle, are supplied to the safety system, and are taken into account in a triggering decision for restraint.

Abstract: Provided is a device for ascertaining an occupant position in a vehicle by measuring the extension of a seat belt, the device conducting the measurement as a function of time.

Abstract: A safety device for vehicles having first sensor arrangement for acquiring the vehicle impact and for outputting first sensor signals, a control device for outputting triggering signals dependent on the first sensor signals, and a restraint system that is triggered dependent on the first sensor signals, second sensor arrangement being provided for the acquisition of obstacles in the vicinity of the vehicle and for the outputting of second sensor signals, and third sensor arrangement being provided for the acquisition of environmental influences on the second sensor arrangement, the second sensor signals output by the second sensor arrangement being used in the control unit for the decision concerning the triggering of the restraint system, after an evaluation of the third sensor signals output by the third sensor arrangement.

Abstract: A method for triggering restraint devices is provided, in which the restraint devices are triggered as a function of a collision signal. The method is launched, however, when the collision signal exceeds a noise threshold. Now a time required for the collision signal to exceed the noise threshold is taken into account in determining the triggering time for a specific restraint device.

Abstract: Filtration media (5) containing natural fiber and a flocculant are effective to flocculate fine particles from runoff in sloped land, ditches, gullies, and construction sites. The filtration media may be in the form of a substantially planar mat product (8), e.g. an erosion control mat, or in tubular form (6).

Abstract: A method for determining the trigger time for restraint means in a vehicle is provided, where, by forming two time windows for the speed reduction in a crash, the slope of the speed reduction in the respective time windows and the position of the time windows are determined. In this manner, an exact determination of the trigger time in conjunction with a crash time and the crash speed may be achieved, which are ascertained with the aid of a pre-crash sensory system.

Abstract: A device for activating an actuator system for protecting a pedestrian is provided, the device being connected to an environment sensor system and a contact sensor system. The device compares a first signal from the contact sensor system to a threshold. The threshold or the first signal is changed as a function of a second signal of the environment sensor system and the actuator system is activated as a function of the comparison.

Abstract: A device is proposed for determining a relative speed between a vehicle and a crash object, the device being situated in the vehicle itself. The device has one active surround field sensor system and one contact sensor system. The device ascertains the relative speed with the aid of a first signal, the surround field sensor system and with the aid of a second signal of the contact sensor system.

Abstract: Fiber filtration tubes containing flocculant are produced by winding a preformed mat of natural fibers about a mandrel. The tubes may be joined end to end to produce products of significant length, and are highly suitable in removing even very fine sediment during use in erosion control.

Abstract: A method for triggering an occupant protection device in a vehicle including the steps: detecting a first measured variable and simultaneously generating a corresponding first signal for indicating a necessity for triggering at least one occupant protection device; detecting an acceleration value in the z direction and simultaneously generating a corresponding second signal; calculating a trigger signal for triggering at least one occupant protection device as a function of the first and second signals, and triggering the at least one occupant protection device as a function of the calculated trigger signal. An appropriate device is also described.

Abstract: Proposed is a device for triggering a restraining system in a vehicle, the device triggering the restraining system as a function of a mass estimate of an impact object. In this context, the device is configured such that it performs mass estimates as a function of at least one pre-crash signal, at least one vehicle datum, the own vehicle speed, and at least one impact signal.

Abstract: A method for triggering restraint devices is described in which various algorithms determine values as a function of at least one sensor signal, which are combined to form a measure, and in which the restraint devices are triggered as a function of the measure influenced by at least one signal from a passenger-compartment sensor system.

Abstract: A device is provided for triggering a restraint means, e.g., a two-stage deployment airbag, the device triggering a second airbag stage as a function of a criterion, derived from the acceleration signal, and the closing velocity. The criterion is, in particular, the deployment time for the first airbag stage. As a function of the deployment time of the first airbag stage and the closing velocity, triggering classes are established which in turn define the deployment time for the second airbag stage.

Abstract: A device for recognizing a pole crash, situated in a vehicle. The pole crash is determined on the basis of an impact velocity, which is recognized by an environment sensor, and an acceleration, which occurs in upon impact and is recognized by an impact sensor. In particular, the time between the impact and the impact object hitting the engine block is determined to identify a pole crash.

Abstract: An apparatus for protecting a vehicle occupant that triggers a restraint means as a function of the vehicle occupant's motion in the context of an accident. The motion is predicted in that by using an occupant detection system and an impact sensor system, a height of the center of mass of the vehicle occupant and a force action on the vehicle occupant are determined, and the motion of the vehicle occupant is thereby predicted.

Abstract: Provided is a device for classifying at least one object with the aid of an environmental sensor system. The device classifies the at least one object on the basis of its velocity and acceleration, the device determining the velocity and the acceleration from a signal of the environmental sensor system.