APPARATUS AND METHOD FOR VEHICLE OCCUPANT PROTECTION IN LARGE ANIMAL COLLISIONS

• US 20150165937A1
• Filed: 12/09/2014
• Published: 06/18/2015
• Est. Priority Date: 12/16/2013
• Status: Active Grant

• Current Assignee: Volvo Car Corporation (AB Volvo)
• Original Assignee: Volvo Car Corporation (AB Volvo)
• Inventors: HARDA, Peter, BERGE, Stefan, AXELSON, Anders II, NILSSON, Par
• Granted Patent: US 9,764,665 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60N 2/02246 Electric motors therefor
• CPC Class Codes: B60N 2/2884 with protection systems against abnormal g-forces
• CPC Class Codes: B60N 2/42 the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats for protecting children B60N2/26; arm-rests B60N2/75; head-rests B60N2/888
• CPC Class Codes: B60N 2/4221 due to impact coming from the front
• CPC Class Codes: B60R 2021/003 characterised by occupant or pedestian
• CPC Class Codes: B60R 2021/01252 Devices other than bags
• CPC Class Codes: B60R 2021/01327 Angular velocity or angular acceleration
• CPC Class Codes: B60R 21/01 Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents electrical circuits for transmission of signals between steering wheel and the vehicle itself B60R16/027; for electrically actuating belt retractor locking means B60R22/343
• CPC Class Codes: B60R 21/0134 responsive to imminent contact with an obstacle , e.g. using radar systems
• CPC Class Codes: B60R 21/0136 responsive to actual contact with an obstacle , e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle monitoring crash strength in combination with passenger seat detection B60R21/01558
• CPC Class Codes: B60T 7/22 initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle , or by means of contactless obstacle detectors mounted on the vehicle

Abstract

An apparatus and method are disclosed for vehicle occupant protection in large animal collisions. Objects forward of the host vehicle are monitored using at least one forward looking remote sensor and object signals output. A velocity of the host vehicle is determined and velocity signals output. The object signals and the velocity signals are processed to determine whether the host vehicle unavoidably will suffer a collision with a large animal while traveling at or above a threshold velocity and a collision signal is output. Operation of a motor operated height adjustment device, an inclination adjustment device and/or a longitudinal position adjustment device of a vehicle seat is triggered to move a seat cushion and a backrest thereof away from a leading edge of a roof of the host vehicle in response to the collision signal.

Claims

1. An apparatus for vehicle occupant protection in large animal collisions, comprising:

at least one forward looking remote sensor arranged to monitor a road ahead of a vehicle hosting the apparatus for potential collision threats, detect objects forward of the host vehicle and output object signals representative thereof;

at least one velocity sensor arranged to determine a velocity of the host vehicle and output velocity signals representative thereof;

a processing device arranged to process at least the object signals and the velocity signals to determine whether the host vehicle unavoidably will suffer a collision with a large animal while traveling at or above a threshold velocity at which such a collision could cause partial intrusion into a passenger compartment of a leading edge of a roof of the vehicle and to output a collision signal in response thereto;

a vehicle seat with a seat cushion mounted on a seat frame, the height of which is adjustable through a motor operated height adjustment device, and a backrest, the inclination of which is adjustable through a motor operated inclination adjustment device, wherein a longitudinal position of the vehicle seat is adjustable through a motor operated longitudinal position adjustment device; and

a triggering device arranged to trigger operation of at least one of the motor operated height adjustment device, the motor operated inclination adjustment device and the motor operated longitudinal position adjustment device to move at least one of the seat cushion and the backrest away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

2. The apparatus of claim 1 wherein the triggering device is arranged to trigger operation of the motor operated inclination adjustment device of the at least one vehicle seat to move the backrest thereof away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

3. The apparatus of claim 1 wherein the triggering device is arranged to trigger operation of the motor operated height adjustment device of the at least one vehicle seat to move the seat cushion away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

4. The apparatus of claim 1 wherein the triggering device is arranged to sequentially trigger operation of firstly the motor operated inclination adjustment device to first move the backrest away from the leading edge of the roof of the host vehicle and thereafter the motor operated height adjustment device to move the seat cushion away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

5. The apparatus of claim 1 wherein the triggering device is arranged to sequentially trigger operation of firstly the motor operated height adjustment device to first move the seat cushion away from the leading edge of the roof of the host vehicle and thereafter the motor operated inclination adjustment device to move the backrest away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

6. The apparatus of claim 1 wherein the triggering device is arranged to simultaneously trigger operation of the motor operated inclination adjustment device to move the backrest away from the leading edge of the roof of the host vehicle and the motor operated height adjustment device to move the seat cushion away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

7. The apparatus of claim 1 wherein the threshold velocity has been previously determined and set through at least one of crash-tests, simulations, calculations or statistics relevant for large animal collisions involving vehicles of the same type as the host vehicle.

8. The apparatus of claim 1 wherein the threshold velocity has been previously set within the range of 80 to 90 km/h.

9. The apparatus of claim 1 wherein the processing device further is arranged to process at least the object signals and the velocity signals to calculate a time to impact and that the triggering device is arranged to trigger operation of at least one of the motor operated height adjustment device and the motor operated inclination adjustment device when the calculated time to impact falls below one second.

10. The apparatus of claim 1 wherein the at least one forward looking remote sensor arranged to monitor the road ahead of the host vehicle comprises at least one of a RADAR technology sensor, a LIDAR technology sensor, a vision technology sensor, an ultrasound technology sensor, an infrared technology sensor or fusions of sensors based on one or more of these sensing technologies.

11. The apparatus of claim 10 wherein the at least one forward looking remote sensor arranged to monitor the road ahead of the host vehicle is a camera based vision sensor.

12. The apparatus of claim 2 wherein the triggering device further is arranged to trigger operation of the motor operated longitudinal position adjustment device to move the vehicle seat away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

13. The apparatus of claim 1 wherein the triggering device further is arranged to trigger operation of at least one of a braking system of the host vehicle to perform autonomous braking of the host vehicle and a reversible restraint system of the host vehicle to perform tensioning of seat belts of the host vehicle in response to a collision signal indicating that the host vehicle is about to suffer a large animal collision.

15. An automotive vehicle comprising an apparatus for vehicle occupant protection in large animal collisions according to claim 1.

14. A method for vehicle occupant protection in large animal collisions in a vehicle comprising a vehicle seat with a seat cushion mounted on a seat frame the height of which is adjustable through a motor operated height adjustment device, and a backrest the inclination of which is adjustable through a motor operated inclination adjustment device, wherein a longitudinal position of the vehicle seat is adjustable through a motor operated longitudinal position adjustment device, the method comprising:

monitoring, using at least one forward looking remote sensor, a road ahead of the vehicle for potential collision threats, detecting objects forward of the vehicle and outputting object signals representative thereof;

determining a velocity of the vehicle, using at least one velocity sensor, and outputting velocity signals representative thereof;

processing, using a processing device, at least the object signals and the velocity signals to determine whether the vehicle unavoidably will suffer a collision with a large animal while traveling at or above a threshold velocity at which such a collision could cause partial intrusion into a passenger compartment of a leading edge of a roof of the vehicle, and outputting a collision signal in response thereto; and

triggering, using a triggering device, operation of at least one of the motor operated height adjustment device, the motor operated inclination adjustment device and the motor operated longitudinal position adjustment device to move at least one of the seat cushion and the backrest away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

16. An apparatus for vehicle occupant protection in large animal collisions, the apparatus for use in a vehicle comprising a vehicle seat with a seat cushion mounted on a seat frame, the height of which is adjustable through a motor operated height adjustment device, and a backrest, the inclination of which is adjustable through a motor operated inclination adjustment device, wherein a longitudinal position of the vehicle seat is adjustable through a motor operated longitudinal position adjustment device, the vehicle further comprising at least one forward looking remote sensor arranged to monitor a road ahead of the vehicle for potential collision threats, detect objects forward of the vehicle and output object signals representative thereof, and at least one velocity sensor arranged to determine a velocity of the vehicle and output velocity signals representative thereof, the apparatus comprising:

a processing device arranged to process at least the object signals and the velocity signals to determine whether the host vehicle unavoidably will suffer a collision with a large animal while traveling at or above a threshold velocity at which such a collision could cause partial intrusion into a passenger compartment of a leading edge of a roof of the vehicle and to output a collision signal in response thereto; and

a triggering device arranged to trigger operation of at least one of the motor operated height adjustment device, the motor operated inclination adjustment device and the motor operated longitudinal position adjustment device to move at least one of the seat cushion and the backrest away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

17. The apparatus of claim 16 wherein the triggering device is arranged to trigger operation of the motor operated inclination adjustment device of the at least one vehicle seat to move the backrest thereof away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

18. The apparatus of claim 16 wherein the triggering device is arranged to trigger operation of the motor operated height adjustment device of the at least one vehicle seat to move the seat cushion away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

19. The apparatus of claim 16 wherein the triggering device is arranged to sequentially trigger operation of firstly the motor operated inclination adjustment device to first move the backrest away from the leading edge of the roof of the host vehicle and thereafter the motor operated height adjustment device to move the seat cushion away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.

20. The apparatus of claim 16 wherein the triggering device is arranged to sequentially trigger operation of firstly the motor operated height adjustment device to first move the seat cushion away from the leading edge of the roof of the host vehicle and thereafter the motor operated inclination adjustment device to move the backrest away from the leading edge of the roof of the host vehicle in response to the collision signal indicating that the host vehicle is about to suffer a large animal collision.