WO1996009193B1 - Automobile air bag system - Google Patents
Automobile air bag systemInfo
- Publication number
- WO1996009193B1 WO1996009193B1 PCT/US1995/012077 US9512077W WO9609193B1 WO 1996009193 B1 WO1996009193 B1 WO 1996009193B1 US 9512077 W US9512077 W US 9512077W WO 9609193 B1 WO9609193 B1 WO 9609193B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- passenger
- air bag
- vehicle
- deployment
- information processing
- Prior art date
Links
- 230000001133 acceleration Effects 0.000 claims abstract 20
- 230000001808 coupling Effects 0.000 claims abstract 5
- 238000010168 coupling process Methods 0.000 claims abstract 3
- 238000005859 coupling reaction Methods 0.000 claims abstract 3
- 239000003990 capacitor Substances 0.000 claims 6
- 206010022114 Injury Diseases 0.000 claims 4
- 230000003213 activating Effects 0.000 claims 2
- 238000000034 method Methods 0.000 claims 2
Abstract
An air bag system having capacitive coupling passenger position sensors (12), connected to a microprocessor (16) which triangulates passenger position and motion, and which receives signals from a 3-axis electronic compass for vehicle angular acceleration analysis, to order air bag deployment when needed but not otherwise; and microprocessor means (16) to record passenger and vehicle data.
Claims
1. A motor vehicle air bag system, for inflation and deployment of an air bag in front of a passenger in a motor vehicle during a collision, said motor vehicle having a passenger compartment for at least one passenger in said motor vehicle, said passenger compartment also having an interior roof, and having a windshield at the forward end of said passenger compartment, and having a passenger seat for said passenger, sa d air bag system comprising:
(a) an air bag;
(b) inflation means, connected to said air bag, for inflating said air bag with a gas;
(c) passenger sensor means, for continuously sensing position of said passenger, with respect to said passenger compartment, and for generating electrical output indicative of said position of said passenger, preferably mounted adjacent to said interior roof of said vehicle;
(d) vehicle angular orientation sensor means, for sensing angular orientation of said vehicle, and for generating electrical output indicative of said angular orientation of said vehicle; and
(e) information processing means, electrically connected to said passenger sensor means, to said vehicle angular orientation sensor means, and to said inflation means, for comparing and performing an analysis of said electrical outputs from said passenger sensor means and said vehicle angular orientation sensor means, and for activating said inflation means to inflate and deploy said air bag, when said analysis indicates that said vehicle is involved in a collision and that deployment of said air bag would likely reduce a risk of serious injury to said passenger which would exist absent deployment of said air bag and likely would not present an increased risk of injury to said passenger resulting from deployment of said air bag; and wherein said information processing means optionally includes memory means for storing said positions of said passenger over some interval of time, and for storing said angular orientations of said vehicle over some interval of time, and for storing crash reference data regarding passenger acceleration and vehicle angular acceleration indicative of vehicle collisions, and regarding positions which will be occupied by said air bag during deployment of said air bag, and regarding angular vehicle acceleration indicative of vehicle rollover and further optionally includes means to
(f) make a preliminary decision to activate said inflation means to inflate and deploy said air bag, if comparison of said passenger positions over a specified period of time, by said information processing means, indicates increasing acceleration of said passenger relative to said passenger compartment, and if comparison of said passenger acceleration with said crash reference data regarding passenger acceleration, indicates that the vehicle is involved in a collision;
(g) compute a projected average position of said passenger during the early phase of deployment of said air bag;
(h) override said initial decision for deployment of said air bag, if comparison of said projected average position of said passenger during said early phase of deployment of said air bag, with said crash reference data on positions which would be occupied by said air bag during deployment of said air bag, indicates that said passenger will be in a position to be occupied by said air bag;
(1) override said initial decision for deployment of said air bag, if comparison of said angular orientations of said vehicle, over a specified period of time, by said information processing means, indicates angular vehicle acceleration which, when compared by said information processing means with said crash reference date regarding angular acceleration indicative of a vehicle collision, indicates that said vehicle is not involved in a collision;
(j) override said initial decision for deployment of said air bag, if comparison of said angular vehicle acceleration with said crash reference data on vehicle rollovers, indicates that said vehicle will roll over; and
(k) activate said inflation means to inflate and deploy said air bag, if said preliminary decision for air bag deployment is made and is not overridden under the processes indicated in parts (g) through ( ) of this claim.
2. The motor vehicle air bag system of claim 1, wherein said 22
passenger sensor means comprises an array of passenger proximity sensor means, for sensing distance from a passenger to each of said passenger proximity sensor means, and wherein said information processing means includes means for determining passenger position by determining each of said distances, and further includes means for triangulation analysis of the distances from said passenger to each of said passenger proximity sensor means, to determine the position of said passenger, and wherein optionally said vehicle angular orientation sensor means is a means for sensing said angular orientation of said vehicle with respect to each of three mutually perpendicular axes, and wherein optionally said vehicle angular orientation sensor means is a three axis electronic compass.
3. The motor vehicle air bag system of claim 2, wherein each of said passenger proximity sensor means comprises a capacitor, and a circuit means, connected to said capacitor, for continuously sensing the capacitive coupling effect on the capacitance of said capacitor, caused by the presence of said passenger in said passenger compartment, and for continuously providing a signal to said information processing means, indicative of the value of said capacitance; and wherein said information processing means includes means for continuously determining the distance of said person from each of said passenger proximity sensor means, based upon the value of said capacitance.
4. A motor vehicle air bag system, for inflation and deployment of an air bag in front of a passenger in a motor vehicle during a collision, said motor vehicle having a passenger compartment for at least one passenger in said motor vehicle, said passenger compartment also having an interior roof, and having a windshield at the forward end of said passenger compartment, and having a passenger seat for said passenger, said air bag system comprising:
(a) an air bag;
(b) inflation means, connected to said air bag, for inflating 
(c) passenger sensor means, mounted adjacent to sa d interior roof of said vehicle, for continuously sensing position of said passenger, preferably by sensing position of a head of said passenger, with respect to said passenger compartment, and for generating electrical output indicative of said position of said passenger; 2 3
(d) information processing means, electrically connected to said passenger sensor means and to said inflation means, for comparing and performing an analysis of said electrical output from said passenger sensor means, and for activating said inflation means to inflate and deploy said air bag, when said analysis indicates that said vehicle is involved in a collision and that deployment of said air bag would likely reduce a risk of serious injury to said passenger which would exist absent deployment of said air bag and likely would not present an increased risk of injury to said passenger resulting from deployment of said air bag.
5. The motor vehicle air bag system of claim 4, wherein said passenger sensor means comprises an array of passenger proximity sensor means, for sensing distance from a passenger to each of said passenger proximity sensor means, and wherein said information processing means includes means for determining passenger position by determining each of said distances, and further includes means for triangulation analysis of the distances from said passenger to each of said passenger proximity sensor means, to determine the position of said passenger.
6. The motor vehicle air bag system of claim 5, wherein each of said passenger proximity sensor means comprises a capacitor, and a circuit means, connected to said capacitor, for continuously sensing the capacitive coupling effect on the capacitance of said capacitor, caused by the presence of said passenger in said passenger compartment, and for continuously providing a signal to said information processing means, indicative of the value of said capacitance; and wherein said information processing means includes means for continuously determining the distance of said person from each of said passenger proximity sensor means, based upon the value of said capacitance. 2 k
7. The motor vehicle air bag system of claim 4, wherein said information processing means includes memory means for storing said positions of said passenger over some interval of time, and the motor vehicle air bag system optionally further comprises means to determine linear acceleration of said vehicle, and wherein said memory means includes means to store values of said linear acceleration of said vehicle over some interval of time, and wherein said information processing means further comprises means to perform an analysis of said linear acceleration over time, and to override said initial decision for deployment of said air bag if said analysis of said linear acceleration indicates that said vehicle is not involved in a collision, and wherein optionally said information processing means includes means to:
(a) make a preliminary decision to activate said inflation means to inflate and deploy said air bag, if comparison of said passenger positions over a specified period of time, by said information processing means, indicates increasing acceleration of said passenger relative to said passenger compartment, and if comparison of said passenger acceleration with said crash reference data regarding passenger acceleration, indicates that the vehicle is involved in a collision;
(b) compute a projected average position of said passenger during the early phase of deployment of said air bag;
(c) override said initial decision for deployment of said air bag, if comparison of said projected average position of said passenger during said early phase of deployment of said air bag, with said crash reference data on positions which would be occupied by said air bag during deployment of said air bag, indicates that said passenger will be in a position to be occupied by said air bag; and
(d) activate said inflation means to inflate and deploy said air bag, if said preliminary decision for air bag deployment is made and is not overridden under the processes indicated in parts (b) and
(c) of this claim.
8. The motor vehicle air bag system of claim 4, further comprising means to determine linear acceleration of said vehicle, and wherein said information processing means further comprises means to perform an analysis of said linear acceleration over time, and to prevent deployment of said air bag if said analysis of said linear acceleration indicates that said vehicle is not involved in a collision. 25
9. A method of disabling an airbag system for a seating position within a motor vehicle, the airbag system comprising an airbag door, the method comprising the steps of: a) providing to a roof above the seating position one or more capacitive coupling occupant sensors; b) detecting proximity of an occupant to the airbag door; and c) disabling the airbag system if the occupant is closer to the airbag door than a predetermined distance; and optionally d) modifying airbag deployment parameters to adjust inflation force of the airbag according to proximity of the occupant to the airbag door.
10. An apparatus for disabling an airbag system for a seating position within a motor vehicle, the airbag system comprising an airbag door, the apparatus comprising: one or more capacitive coupling occupant sensors proximate a roof above the seating position; means for detecting proximity of an occupant to the airbag door; and means for disabling the airbag system if the occupant is closer to the airbag door than a predetermined distance; and optionally means for modifying airbag deployment parameters to adjust inflation force of the airbag according to proximity of the occupant to the airbag door.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51109296A JP4243738B2 (en) | 1994-09-23 | 1995-09-22 | Automotive airbag system |
| AU36386/95A AU3638695A (en) | 1994-09-23 | 1995-09-22 | Automobile air bag system |
| EP95933901A EP0782515B1 (en) | 1994-09-23 | 1995-09-22 | Automobile air bag system |
| DE69527536T DE69527536T2 (en) | 1994-09-23 | 1995-09-22 | MOTOR VEHICLE AIR BAG SYSTEM |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/311,576 | 1994-09-23 | ||
| US08/311,576 US5602734A (en) | 1994-09-23 | 1994-09-23 | Automobile air bag systems |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1996009193A1 WO1996009193A1 (en) | 1996-03-28 |
| WO1996009193B1 true WO1996009193B1 (en) | 1996-05-23 |
Family
ID=23207519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1995/012077 WO1996009193A1 (en) | 1994-09-23 | 1995-09-22 | Automobile air bag system |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5602734A (en) |
| EP (1) | EP0782515B1 (en) |
| JP (1) | JP4243738B2 (en) |
| AU (1) | AU3638695A (en) |
| DE (1) | DE69527536T2 (en) |
| WO (1) | WO1996009193A1 (en) |
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