Method and device for checking a sensor signal and for actuating a passenger protection means of a vehicle
First Claim
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1. A method for checking a sensor signal from a sensor suitable for actuating a passenger protection arrangement of a vehicle, the method comprising:
- comparing the sensor signal and at least two reference signals from at least two reference plausibility sensors repeatedly within a predetermined time interval after a detection of a collision or a rollover, so as to obtain a plurality of comparison results; and
evaluating the sensor signal based on the plurality of comparison results to detect a fault in the sensor signal after the detection of the collision or the rollover;
wherein the passenger protection arrangement is actuated based on the sensor signal, if no fault is detected when the sensor signal is checked, andwherein the sensor signal is determined to be plausible based on distances derived by comparisons of times between predetermined time intervals, and wherein each of the distances is between a value of the sensor signal and a value of one of the reference signals to which the value of the sensor signal was compared at a respective time.
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Abstract
A method for checking a sensor signal suitable for actuating a passenger protection arrangement of a vehicle. The method includes a step of carrying out a comparison between the sensor signal and at least one reference signal, repeatedly within a predetermined time interval, in order to obtain a plurality of comparison results, and a step of evaluating the sensor signal based on the plurality of comparison results, in order to detect a fault in the sensor signal.
30 Citations
13 Claims
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1. A method for checking a sensor signal from a sensor suitable for actuating a passenger protection arrangement of a vehicle, the method comprising:
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comparing the sensor signal and at least two reference signals from at least two reference plausibility sensors repeatedly within a predetermined time interval after a detection of a collision or a rollover, so as to obtain a plurality of comparison results; and evaluating the sensor signal based on the plurality of comparison results to detect a fault in the sensor signal after the detection of the collision or the rollover; wherein the passenger protection arrangement is actuated based on the sensor signal, if no fault is detected when the sensor signal is checked, and wherein the sensor signal is determined to be plausible based on distances derived by comparisons of times between predetermined time intervals, and wherein each of the distances is between a value of the sensor signal and a value of one of the reference signals to which the value of the sensor signal was compared at a respective time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for actuating a passenger protection arrangement of a vehicle, the method comprising:
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receiving a sensor signal via an interface to a sensor; receiving at least two reference signals via an interface to at least two reference plausibility sensors; checking the sensor signal by comparing the sensor signal and at least two reference signals repeatedly within a predetermined time interval after a detection of a collision or a rollover, so as to obtain a plurality of comparison results, and evaluating the sensor signal based on the plurality of comparison results to detect a fault in the sensor signal after the detection of the collision or the rollover; and actuating the passenger protection arrangement based on the sensor signal, if no fault is detected when the sensor signal is checked; wherein the sensor signal is determined to be plausible based on distances derived by comparisons of times between predetermined time intervals, and wherein each of the distances is between a value of the sensor signal and a value of one of the reference signals to which the value of the sensor signal was compared at a respective time.
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10. A device for checking a sensor signal from a sensor suitable for actuating a passenger protection arrangement of a vehicle, comprising:
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a comparing arrangement to compare the sensor signal and at least two reference signals from at least two reference plausibility sensors repeatedly within a predetermined time interval after a detection of a collision or a rollover, so as to obtain a plurality of comparison results; and an evaluating arrangement to evaluate the sensor signal based on the plurality of comparison results to detect a fault in the sensor signal after the detection of the collision or the rollover; wherein a passenger protection arrangement is actuated based on the sensor signal, if no fault is detected when the sensor signal is checked, and wherein the sensor signal is determined to be plausible based on distances derived by comparisons of times between predetermined time intervals, and wherein each of the distances is between a value of the sensor signal and a value of one of the reference signals to which the value of the sensor signal was compared at a respective time. - View Dependent Claims (11)
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12. A non-transitory computer readable medium having a computer program, which is executable by a processor, comprising:
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a program code arrangement having program code for checking a sensor signal from a sensor suitable for actuating a passenger protection arrangement of a vehicle, by performing the following; comparing the sensor signal and at least two reference signals from at least two reference plausibility sensors repeatedly within a predetermined time interval after a detection of a collision or a rollover, so as to obtain a plurality of comparison results; and evaluating the sensor signal based on the plurality of comparison results to detect a fault in the sensor signal after the detection of the collision or the rollover; wherein a passenger protection arrangement is actuated based on the sensor signal, if no fault is detected when the sensor signal is checked, and wherein the sensor signal is determined to be plausible based on distances derived by comparisons of times between predetermined time intervals, and wherein each of the distances is between a value of the sensor signal and a value of one of the reference signals to which the value of the sensor signal was compared at a respective time. - View Dependent Claims (13)
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Specification