Method and apparatus for detecting rollover of an automotive vehicle
First Claim
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1. A rollover sensing system comprising:
- a lateral acceleration sensor generating a lateral acceleration signal;
a roll rate sensor generating a roll rate signal;
a roll angle detector generating a roll angle signal;
a control circuit determining a predetermined rollover threshold in response to said roll rate and roll angle sensor, calculating an adjusted threshold as a function of said predetermined rollover threshold and said lateral acceleration and generating a control signal in response to the adjusted threshold.
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Abstract
A rollover sensing system (12) that may be used in the determination of when to deploy restraints in the vehicle. The rollover sensing system (12) may include lateral acceleration sensors (32), a roll rate sensor (18) and a roll angle detector (20). A control circuit (16) determines a predetermined rollover threshold in response to the roll rate and roll angle detector (20) and calculates an adjusted threshold as a function of the predetermined rollover threshold and the lateral acceleration. The control circuit (16) generates a control signal in response to the adjusted threshold.
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Citations
21 Claims
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1. A rollover sensing system comprising:
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a lateral acceleration sensor generating a lateral acceleration signal;
a roll rate sensor generating a roll rate signal;
a roll angle detector generating a roll angle signal;
a control circuit determining a predetermined rollover threshold in response to said roll rate and roll angle sensor, calculating an adjusted threshold as a function of said predetermined rollover threshold and said lateral acceleration and generating a control signal in response to the adjusted threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An occupant restraint system comprising:
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an occupant restraint;
a deployment circuit coupled to said occupant restraint;
a lateral acceleration sensor generating a lateral acceleration signal;
a roll rate sensor generating a roll rate signal;
a roll angle detector generating a roll angle signal; and
a control circuit determining a predetermined rollover threshold in response to said roll rate and roll angle sensor, calculating an adjusted threshold as a function of said predetermined rollover threshold and said lateral acceleration signal and generating a control signal in response to the adjusted threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of detecting rollover in a vehicle comprising the steps of:
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determining an energy rollover threshold;
determining an adjusted threshold as a function of said energy rollover threshold and lateral acceleration; and
generating a control signal in response to the adjusted threshold. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification