CONTEXT-AWARE THREAT RESPONSE ARBITRATION

• US 20150057891A1
• Filed: 08/22/2013
• Published: 02/26/2015
• Est. Priority Date: 08/22/2013
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Mudalige, Upali Priyantha, Losh, Michael
• Granted Patent: US 9,099,006 B2
• Time in Patent Office: Days
• US Class Current: 701/42
• CPC Class Codes: B60W 10/00 Conjoint control of vehicle sub-units of different type or different function for propulsion of purely electrically-propelled vehicles with power supplied within the vehicle B60L50/00 - B60L58/00
• CPC Class Codes: B60W 10/18 including control of braking systems
• CPC Class Codes: B60W 10/20 including control of steering systems
• CPC Class Codes: B60W 2510/0604 Throttle position
• CPC Class Codes: B60W 2510/18 Braking system
• CPC Class Codes: B60W 2510/20 Steering systems
• CPC Class Codes: G08G 1/161 Decentralised systems, e.g. inter-vehicle communication
• CPC Class Codes: G08G 1/165 for passive traffic, e.g. including static obstacles, trees
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes

Abstract

A method for prioritizing potential threats identified by vehicle active safety systems. The method includes providing context information including map information, vehicle position information, traffic assessment information, road condition information, weather condition information, and vehicle state information. The method calculates a system context value for each active safety system using the context information. Each active safety system provides a system threat level value, a system braking value, a system steering value, and a system throttle value. The method calculates an overall threat level value using all of the system context values and all of the system threat level values. The method then provides a braking request value to vehicle brakes based on all of the system braking values, a throttle request value to a vehicle throttle based on all of the system throttle values, and a steering request value to vehicle steering based on all of the system steering values.

Claims

1. A method for prioritizing a vehicle response for a plurality of active safety systems on the vehicle, said method comprising:

providing context information;

calculating a system context value for each active safety system using the context information;

providing a system threat level value, a system braking value, a system steering value and a system throttle value from each of the active safety systems;

calculating an overall threat level value using all of the system context values and all of the system threat level values;

providing a braking request value to vehicle brakes based on all of the system braking values;

providing a throttle request value to a vehicle throttle based on all of the system throttle values; and

providing a steering request value to vehicle steering based on all of the system steering values.

2. The method according to claim 1 wherein providing context information includes providing map information, vehicle position information, traffic assessment information, road condition information, weather condition information and vehicle state information.

3. The method according to claim 2 wherein providing vehicle state information includes providing vehicle speed, vehicle yaw rate and vehicle gear selection.

4. The method according to claim 2 wherein calculating a system context value for each active safety system includes using a plurality of weighting factors for each piece of context information.

5. The method according to claim 4 wherein calculating a system context value for each active safety system includes adding normalized weighting factors for each piece of context information and then adding all of the normalized and added weighting factors.

6. The method according to claim 1 wherein calculating an overall threat level value includes multiplying the system context value and the system threat level value for each active safety system and adding the multiplied system context values and system threat level values.

7. The method according to claim 1 wherein the vehicle active safety systems include a collision imminent steering system, a lateral collision prevention system, a pedestrian detection system, a straight crossing path system, a left turn across path system, a rear cross traffic avoidance system and a collision avoidance system.

8. The method according to claim 1 wherein providing a braking request value includes providing the maximum system braking value from all of the active safety systems.

9. The method according to claim 1 wherein providing a throttle request value includes providing the minimum system throttle value from all of the active safety systems.

10. The method according to claim 1 further comprising providing the overall threat level value to a human machine interface module to provide a warning.

11. A method for prioritizing a vehicle response for a plurality of active safety systems on the vehicle, said method comprising:

providing context information including map information, vehicle position information, traffic assessment information, road condition information, weather condition information, and vehicle state information;

calculating a system context value for each active safety system using the context information including using a plurality of weighting factors for each piece of context information;

providing a system threat level value from each of the active safety systems;

calculating an overall threat level value using all of the system context values and all of the system threat level values; and

providing one or more of vehicle braking, vehicle throttle and vehicle steering based on the overall threat level value.

12. The method according to claim 11 wherein providing vehicle state information includes providing vehicle speed, vehicle yaw rate and vehicle gear selection.

13. The method according to claim 11 wherein calculating a system context value for each active safety system includes adding normalized weighting factors for each piece of context information and then adding all of the normalized and added weighting factors.

14. The method according to claim 11 wherein calculating an overall threat level value includes multiplying the system context value and the system threat level value for each active safety system and adding the multiplied system context values and system threat level values.

15. The method according to claim 11 wherein the vehicle active safety systems include a collision imminent steering system, a lateral collision prevention system, a pedestrian detection system, a straight crossing path system, a left turn across path system, a rear cross traffic avoidance system and a collision avoidance system.

16. The method according to claim 11 further comprising providing the overall threat level value to a human machine interface module to provide a warning.

17. An apparatus method for prioritizing a vehicle response for a plurality of active safety systems on the vehicle, said apparatus comprising:

means for providing context information;

means for calculating a system context value for each active safety system using the context information;

means for providing a system threat level value, a system braking value, a system steering value and a system throttle value from each of the active safety systems;

means for calculating an overall threat level value using all of the system context values and all of the system threat level values;

means for providing a braking request value to vehicle brakes based on all of the system braking values;

means for providing a throttle request value to a vehicle throttle based on all of the system throttle values; and

means for providing a steering request value to vehicle steering based on all of the system steering values.

18. The apparatus according to claim 17 wherein the means for providing context information provides map information, vehicle position information, traffic assessment information, road condition information, weather condition information and vehicle state information.

19. The apparatus according to claim 18 wherein the means for calculating a system context value for each active safety system uses a plurality of weighting factors for each piece of context information.

20. The apparatus according to claim 17 wherein the means for calculating an overall threat level value multiplies the system context value and the system threat level value for each active safety system and adding the multiplied system context values and system threat level values.