Vehicle behavior judgment system and vehicle occupant-protecting system

• US 20050165528A1
• Filed: 01/24/2005
• Published: 07/28/2005
• Est. Priority Date: 01/26/2004
• Status: Active Grant

• Current Assignee: Calsonic Kansei Corporation
• Original Assignee: Calsonic Kansei Corporation
• Inventors: Sawahata, Toshikatsu
• Granted Patent: US 7,454,276 B2
• Time in Patent Office: Days
• US Class Current: 701/38
• CPC Class Codes: B60R 2021/0018 Roll-over
• CPC Class Codes: B60R 2021/0117 Noise
• CPC Class Codes: B60R 2021/01306 monitoring vehicle inclination
• CPC Class Codes: B60R 2021/01327 Angular velocity or angular acceleration
• CPC Class Codes: B60R 21/0132 responsive to vehicle motion parameters , e.g. to vehicle longitudinal or transversal deceleration or speed value
• CPC Class Codes: B60R 21/01336 using filtering

Abstract

A vehicle behavior judgment system comprising a rolling angular velocity detector adapted for detecting a rolling angular velocity of a vehicle, a rollover judgment device adapted for judging, based on at least a rolling angular velocity of a vehicle, whether the vehicle rolls over or not, and a noise-cutting filter adapted for removing a noise component from the rolling angular velocity.

Claims

1. A vehicle behavior judgment system comprising a rolling angular velocity detector adapted for detecting a rolling angular velocity of a vehicle, a rollover judgment device adapted for judging, based on at least a rolling angular velocity of a vehicle, whether the vehicle rolls over or not, and a noise-cutting filter adapted for removing a noise component from the rolling angular velocity.

2. The vehicle behavior judgment system set forth in claim 1, which further comprises a rolling angle calculator for calculating a rolling angle based on signals from the rolling angular velocity detector via the noise-cutting filter and wherein the rollover judgment device is adapted for judging, based on the rolling angular velocity and the calculated rolling angle of the vehicle, whether the vehicle rolls over or not.

3. The vehicle behavior judgment system set forth in claim 1, wherein the noise component is a signal component which corresponds to a behavior never occurring in the actual vehicle.

4. The vehicle behavior judgment system set forth in claim 1, wherein if a difference between a newest rolling angular velocity and a just previous rolling angular velocity as viewed in a time series exceeds a preset threshold value with respect to the rolling angular velocities detected by the detector, the rollover judgment device replaces the newest rolling angular velocity by the just previous one and then effects judgment as to “

rollover”

of the vehicle by using the just previous rolling angular velocity instead of the newest one.

5. The vehicle behavior judgment system set forth in claim 4, wherein the preset threshold value is a value which corresponds to a behavior never occurring in the actual vehicle.

11. A vehicle occupant-protecting system comprising said behavior judgment system claimed in claim 1, and an occupant-protecting device which protects the occupant through operating corresponding to a judgment result as to “

rollover”

obtained by the vehicle behavior judgment system.

12. The vehicle occupant-protecting system set forth in claim 11, wherein the occupant-protecting device is selected from at least one of an airbag system, a seat belt pretensioner device, and an active rollover device.

13. The vehicle occupant-protecting system set forth in claim 11, which further comprising an inclination sensor adapted to detect whether the vehicle is inclined beyond a given inclination angle in a width direction of the vehicle or not and wherein the occupant-protecting device adapted for protecting the occupant through operating corresponding upon a judgment result as to “

rollover”

obtained by the vehicle behavior judgment system and a judgment result as to “

inclination”

obtained by the inclination sensor.

14. A vehicle occupant-protecting system comprising said behavior judgment system claimed in claim 5, and an occupant-protecting device which protects the occupant through operating corresponding to a judgment result as to “

rollover”

obtained by the vehicle behavior judgment system.

15. The vehicle occupant-protecting system set forth in claim 11, wherein the occupant-protecting device is selected from at least one of an airbag system, a seat belt pretensioner device, and an active rollover device.

16. The vehicle occupant-protecting system set forth in claim 14, which

further comprising an inclination sensor adapted to detect whether the vehicle is inclined beyond a given inclination angle in a width direction of the vehicle or not and wherein the occupant-protecting device adapted for protecting the occupant through operating corresponding upon a judgment result as to “

rollover”

obtained by the vehicle behavior judgment system and a judgment result as to “

inclination”

obtained by the inclination sensor.

17. A vehicle occupant-protecting system comprising said vehicle behavior judgment system claimed in any one of claim 1, an inclination sensor adapted to detect whether the vehicle is inclined beyond a given inclination angle in a width direction of the vehicle or not, and an occupant-protecting device adapted for protecting the occupant through operating corresponding upon a judgments result as to “

rollover”

obtained by the vehicle behavior judgment system and a judgment result as to “

inclination”

obtained by the inclination sensor.

18. The vehicle occupant-protecting system set forth in claim 17, wherein the occupant-protecting device is selected from at least one of an airbag system, a seat belt pretensioner device, and an active rollover device.

6. A vehicle behavior judgment system comprising a rolling angular velocity detector adapted for detecting a rolling angular velocity of a vehicle, and a rollover judgment device adapted for judging, based on at least the rolling angular velocity of the vehicle detected by the rolling angular velocity detector, whether the vehicle rolls over or not, wherein if a difference between a newest rolling angular velocity and a just previous rolling angular velocity as viewed in a time series exceeds a preset threshold value with respect to the rolling angular velocities detected by the detector, the rollover judgment device replaces the newest rolling angular velocity by the just previous one and then effects judgment as to “

rollover”

of the vehicle by using the just previous rolling angular velocity instead of the newest one.

7. The vehicle behavior judgment system set forth in claim 6, wherein the preset threshold value is a value which corresponds to a behavior never occurring in the actual vehicle.

8. The vehicle behavior judgment system set forth in claim 6, which further comprises a noise-cutting filter adapted for removing a noise component from the rolling angular velocity.

9. The vehicle behavior judgment system set forth in claim 6, which further comprises a rolling angle calculator for calculating a rolling angle based on signals from the rolling angular velocity detector via the noise-cutting filter and wherein the rollover judgment device is adapted for judging, based on the rolling angular velocity and the calculated rolling angle of the vehicle, whether the vehicle rolls over or not.

10. The vehicle behavior judgment system set forth in claim 9, wherein the noise component is a signal component which corresponds to a behavior never occurring in the actual vehicle.