Control device for a restraint device in a motor vehicle
First Claim
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1. In a motor vehicle having a longitudinal axis, a transverse axis and a restraint device, a control device for the restraint device, comprising:
- a sensor assembly having at least three acceleration sensors with differently oriented sensitivity axes in a plane defined approximately by the longitudinal axis and the transverse axis of the vehicle, said at least three acceleration sensors supplying at least first, second and third acceleration signals; and
an evaluation device for evaluating the acceleration signals;
said evaluation device ascertaining a direction and an intensity of an acceleration acting upon the vehicle from at least the first and second acceleration signals;
said evaluation device checking one of the direction and the intensity using at least the third acceleration signal; and
said evaluation device generating a malfunction signal if one of the direction and the intensity is not confirmed by at least the third acceleration signal.
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Abstract
A control device for a restraint device in a motor vehicle includes a sensor assembly having at least three acceleration sensors with differently oriented sensitivity axes. An evaluation device ascertains the direction and the intensity of an acceleration acting upon the vehicle from at least two of the acceleration sensors and monitors at least one of the ascertained variables using at least a third one of the acceleration sensors.
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Citations
9 Claims
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1. In a motor vehicle having a longitudinal axis, a transverse axis and a restraint device, a control device for the restraint device, comprising:
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a sensor assembly having at least three acceleration sensors with differently oriented sensitivity axes in a plane defined approximately by the longitudinal axis and the transverse axis of the vehicle, said at least three acceleration sensors supplying at least first, second and third acceleration signals; and an evaluation device for evaluating the acceleration signals; said evaluation device ascertaining a direction and an intensity of an acceleration acting upon the vehicle from at least the first and second acceleration signals; said evaluation device checking one of the direction and the intensity using at least the third acceleration signal; and said evaluation device generating a malfunction signal if one of the direction and the intensity is not confirmed by at least the third acceleration signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification