Collision sensing device for a vehicle
First Claim
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1. A vehicle collision sensing system for sensing a collision of a vehicle, comprising:
- a vehicle body member, which forms a predetermined space therein, wherein the predetermined space is deformable by the collision of the vehicle;
relative pressure sensing means for sensing a pressure difference between a pressure at an inside of the predetermined space and a pressure at an outside of the predetermined space;
collision determining means for determining the collision of the vehicle based on the pressure difference, which is sensed by the relative pressure sensing means; and
absolute pressure sensing means for sensing an absolute pressure at the inside or the outside of the predetermined space, wherein the collision determining means determines the collision of the vehicle based on;
the pressure difference that is sensed by the relative pressure sensing means; and
the absolute pressure that is sensed by the absolute pressure sensing means.
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Abstract
In a vehicle collision sensing system, a relative pressure sensor senses a pressure difference between a pressure at an inside of a door interior space and a pressure at an outside of the door interior space. An air bag ECU determines the collision of the vehicle based on the pressure difference, which is sensed by the relative pressure sensor.
14 Citations
12 Claims
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1. A vehicle collision sensing system for sensing a collision of a vehicle, comprising:
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a vehicle body member, which forms a predetermined space therein, wherein the predetermined space is deformable by the collision of the vehicle; relative pressure sensing means for sensing a pressure difference between a pressure at an inside of the predetermined space and a pressure at an outside of the predetermined space; collision determining means for determining the collision of the vehicle based on the pressure difference, which is sensed by the relative pressure sensing means; and absolute pressure sensing means for sensing an absolute pressure at the inside or the outside of the predetermined space, wherein the collision determining means determines the collision of the vehicle based on; the pressure difference that is sensed by the relative pressure sensing means; and the absolute pressure that is sensed by the absolute pressure sensing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vehicle collision sensing system for sensing a collision of a vehicle, comprising:
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a vehicle body member, which forms a predetermined space therein, wherein the predetermined space is deformable by the collision of the vehicle, and the vehicle body member is a vehicle door; relative pressure sensing means for sensing a pressure difference between a pressure at an inside of the predetermined space and a pressure at an outside of the predetermined space; and collision determining means for determining the collision of the vehicle based on the pressure difference, which is sensed by the relative pressure sensing means. - View Dependent Claims (11, 12)
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Specification