Rollover Judgment Apparatus
First Claim
1. A rollover judgment apparatus for judging whether or not a vehicle will roll over by comparing each of an output of a roll angular velocity sensor and an output of either or both of a lateral direction acceleration sensor and a steering wheel angle sensor with a threshold, said device comprising:
- a threshold change functional unit for changing the determination threshold on a basis of a roll angular velocity, a tilt angle of the vehicle which is acquired by integrating the roll angular velocity, and either or both of a lateral direction acceleration and a steering wheel angle;
a rollover judging means for judging whether or not the vehicle will roll over on a basis of the determination threshold changed by said threshold change functional unit, and said tilt angle of the vehicle;
a safing functional unit for detecting a tip-up of the vehicle in relation to a motion of the vehicle; and
a curtain air bag deploying unit for controlling expansion of a curtain air bag on a basis of an output of said rollover judging means and an output of said safing functional unit.
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Accused Products
Abstract
A rollover judgment apparatus includes a threshold change functional unit 5 for changing a determination threshold on the basis of a roll angular velocity ω, a tilt angle θv of a vehicle which is acquired by integrating the roll angular velocity ω, a lateral direction acceleration Gy, and a steering wheel angle θs, an ω×θ map judging unit 6 for judging whether or not the vehicle will roll over on the basis of the determination threshold changed by the threshold change functional unit 5, and the tilt angle of the vehicle, a safing functional unit 7 for detecting a tip-up of the vehicle in relation to a motion of the vehicle, and a curtain air bag deploying unit 9 for controlling expansion of a curtain air bag on the basis of an output of the ω×θ map judging unit 6 and an output of the safing functional unit 7.
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Citations
10 Claims
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1. A rollover judgment apparatus for judging whether or not a vehicle will roll over by comparing each of an output of a roll angular velocity sensor and an output of either or both of a lateral direction acceleration sensor and a steering wheel angle sensor with a threshold, said device comprising:
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a threshold change functional unit for changing the determination threshold on a basis of a roll angular velocity, a tilt angle of the vehicle which is acquired by integrating the roll angular velocity, and either or both of a lateral direction acceleration and a steering wheel angle; a rollover judging means for judging whether or not the vehicle will roll over on a basis of the determination threshold changed by said threshold change functional unit, and said tilt angle of the vehicle; a safing functional unit for detecting a tip-up of the vehicle in relation to a motion of the vehicle; and a curtain air bag deploying unit for controlling expansion of a curtain air bag on a basis of an output of said rollover judging means and an output of said safing functional unit. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10)
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2. A rollover judgment apparatus for judging whether or not a vehicle will roll over by comparing each of an output of a roll angular velocity sensor and an output of either or both of a lateral direction acceleration sensor and a steering wheel angle sensor with a threshold, said device comprising:
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a threshold change functional unit for changing the determination threshold on a basis of a roll angular velocity, a tilt angle of the vehicle which is acquired by integrating the roll angular velocity, and either or both of a lateral direction acceleration and a steering acceleration which is acquired from a steering wheel angle; a rollover judging means for judging whether or not the vehicle will roll over on a basis of the determination threshold changed by said threshold change functional unit, and said tilt angle of the vehicle; a safing functional unit for detecting a tip-up of the vehicle in relation to a motion of the vehicle; and a curtain air bag deploying unit for controlling expansion of a curtain air bag on a basis of an output of said rollover judging means and an output of said safing functional unit.
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Specification