Abstract:
A device for detecting a collision with a vehicle includes a pressure sensor for detecting compression of a substantially closed measuring volume upon collision. The measuring volume is arranged along a part of the vehicle body that is impacted during the collision. The cross-sectional area of the measuring volume, along its longitudinal direction, has a comparatively larger area in the vicinity of those parts of the vehicle body that are comparatively rigid and therefore comparatively difficult to deform during collision.
Abstract:
A configuration for controlling an occupant restraint device of a motor vehicle. The occupant restraint device is activated only whenever it is ascertained, by an evaluator, that simultaneously a signal of a first acceleration sensor and a signal of a second acceleration sensor indicate a collision. The sensitivity axes of the acceleration sensors are oriented differently.
Abstract:
A control assembly for a passenger protection system of a vehicle which is tripped upon the occurrence of a side impact traffic accident. The control assembly has at least one detector adapted to detect a pressure rise in a hollow body. The at least one detector is mounted in a largely enclosed side portion on the side of the vehicle body defining a hollow body such as a door. A control unit is connected to and receives signals from the at least one detector. The control unit evaluates a sudden and largely adiabatic air pressure rise detected by the detector upon a side impact collision and determines whether to actuate a passenger protection system such as an air bag.
Abstract:
The invention relates to the idea of not initially multiplying the output signal (a) of an acceleration sensor (19) with regard to a weighted sum (Σg) with a correction factor (kw) but to alter a test signal (t) by using a weighting means (16) in such a manner that an already weighted output signal (ag) can be generated so that during a test operation, the safing algorithm of an evaluating device can be directly fallen back upon, whereby this can be advantageously tested with regard to its ability to operate. The invention is particularly suited for occupant protection systems of a modern motor vehicle.
Abstract:
In a control configuration for an occupant protection system for side collision protection in a vehicle, an enable signal of a protection configuration generated as a function of transverse acceleration, is delivered to a timer. The timer furnishes an enable signal of a fixed minimum duration for triggering the occupant protection system.
Abstract:
A micromechanical sensor unit for detecting acceleration has pendulums each with a spiral spring and a seismic mass. Supports each being connected to a respective one of the pendulums, and position sensors, each two of the position sensors is associated with a respective one of the pendulums. Each position sensor and an associated pendulum form a switch with a defined triggering threshold and at least two switches respond to the same direction of acceleration. At least one switch is a safing sensor with a separate tap of a sensor signal.
Abstract:
A device for detecting a collision with a vehicle includes a pressure sensor for detecting compression of a substantially closed measuring volume upon collision. The measuring volume is arranged along a part of the vehicle body that is impacted during the collision. The cross-sectional area of the measuring volume, along its longitudinal direction, has a comparatively larger area in the vicinity of those parts of the vehicle body that are comparatively rigid and therefore comparatively difficult to deform during collision.
Abstract:
The invention relates to the idea of not initially multiplying the output signal (a) of an acceleration sensor (19) with regard to a weighted sum (Σg) with a correction factor (kw) but to alter a test signal (t) by using a weighting means (16) in such a manner that an already weighted output signal (ag) can be generated so that during a test operation, the safing algorithm of an evaluating device can be directly fallen back upon, whereby this can be advantageously tested with regard to its ability to operate. The invention is particularly suited for occupant protection systems of a modern motor vehicle.
Abstract:
A voltage supply unit which operates at an internal switching frequency and has a capacitor connected in parallel with its output is connected to the input of a sensor unit operating at an internal switching frequency. The connecting line contains a resistor which, together with a capacitor connected in parallel with the input, forms a filter.
Abstract:
In order to sense an object or a person in the interior of a vehicle, a laser emits a laser pulse. The laser pulse which is reflected at an object or a person is registered and evaluated. The energy content of a following laser pulse is determined based on a characteristic variable of the reflected laser pulse such as its power or its energy content.