Process for direction-selective orientation of a passive safety device
First Claim
1. A process for the direction-selective triggering of a passive safety device in a vehicle, particularly relevant to an airbag system,where at least two acceleration transducers and one evaluation device are provided, to pick up the signals coming from the acceleration transducers, processes them and if the vehicle is involved in a crash, make output signals available to trigger the passive safety device, andthe acceleration transducers have directional sensitive axes, where the sensitive axes have actual instantaneous orientations and are aligned in different and preferably specified reference orientations and there is an angle tolerance between the reference and instantaneous orientations of the sensitive axes wherein,there is angle correction, by converting the n signals (am 1, am 2, . . . am n) coming from n≧
- 2 acceleration transducers to n output signals (a(I), a(II), . . . a(n)), where the output signals (a(I), a(II), . . . a(n)) are linear combinations of incoming signals (am 1, am 2, . . . am n) with adjustable factors (cij);
##EQU6##
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Accused Products
Abstract
A process and a mechanism for the direction-selective triggering of a passive safety device in a vehicle, with at least two acceleration transducers, where the acceleration transducers have directional sensitive axes and these have actual instantaneous orientations and are aligned in different, preferably specified reference orientations and there is an angle tolerance between the reference and the instantaneous orientations of the sensitive axes. An evaluation device is provided to correct the angle tolerance, comprising an electronic circuit which converts the signals (am 1, am 2, . . . am n) coming from the acceleration transducers to corrected output signals (a(I), a(II), . . . a(n)), which are linear combinations of the incoming signals with adjustable factors cij : ##EQU1## This can lessen the expense of production compared to familiar mechanisms, without simultaneously reducing the measuring accuracy of the mechanism. In particular, if acceleration transducers with considerably higher angle tolerances are used, it is possible to achieve a higher level of measuring accuracy and sensitivity can be equalized and angle tolerance offset simultaneously in a single, inexpensive operation.
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Citations
8 Claims
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1. A process for the direction-selective triggering of a passive safety device in a vehicle, particularly relevant to an airbag system,
where at least two acceleration transducers and one evaluation device are provided, to pick up the signals coming from the acceleration transducers, processes them and if the vehicle is involved in a crash, make output signals available to trigger the passive safety device, and the acceleration transducers have directional sensitive axes, where the sensitive axes have actual instantaneous orientations and are aligned in different and preferably specified reference orientations and there is an angle tolerance between the reference and instantaneous orientations of the sensitive axes wherein, there is angle correction, by converting the n signals (am 1, am 2, . . . am n) coming from n≧ - 2 acceleration transducers to n output signals (a(I), a(II), . . . a(n)), where the output signals (a(I), a(II), . . . a(n)) are linear combinations of incoming signals (am 1, am 2, . . . am n) with adjustable factors (cij);
##EQU6## - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- 2 acceleration transducers to n output signals (a(I), a(II), . . . a(n)), where the output signals (a(I), a(II), . . . a(n)) are linear combinations of incoming signals (am 1, am 2, . . . am n) with adjustable factors (cij);
Specification