Safety device for vehicle occupants
First Claim
1. A safety device for vehicle occupants comprising at least two acceleration sensitive sensors, a processing and evaluating circuit for output signals of the sensors, restraint means and a drive circuit for the restraint means coupled to the processing and evaluating circuit, further comprising a processing circuit for each sensor and means for comparing the sensor output signals with one another and for activating a further device if a difference between the two sensor output signals exceeds a predetermined threshold value, in order to indicate that the safety device is malfunctioning.
1 Assignment
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Accused Products
Abstract
In a safety device for vehicle occupants with acceleration-sensitive sensors and with processing circuits for the sensors summing and integrating devices as well as a comparator device for comparing the summation and integration values are provided. The comparator device controls a warning device as soon as the comparison value exceeds a presettable limit value.
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Citations
9 Claims
- 1. A safety device for vehicle occupants comprising at least two acceleration sensitive sensors, a processing and evaluating circuit for output signals of the sensors, restraint means and a drive circuit for the restraint means coupled to the processing and evaluating circuit, further comprising a processing circuit for each sensor and means for comparing the sensor output signals with one another and for activating a further device if a difference between the two sensor output signals exceeds a predetermined threshold value, in order to indicate that the safety device is malfunctioning.
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9. A method for operating a safety device for vehicle occupants comprising the steps of summing or integrating output signals of acceleration-sensitive sensors during a presettable interval of time, comparing the sum and integral values with one another after the presettable interval of time, and if the comparison value exceeds a presettable limit value, operating a warning device to indicate that the safety device is malfunctioning.
Specification