Methods and system for monitoring vehicle movement for use in evaluating possible intersection of paths between vehicle

• US 9,293,047 B2
• Filed: 01/08/2009
• Issued: 03/22/2016
• Est. Priority Date: 01/08/2009
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Raphael, Eric L., Johnson, Frederick I.
• Primary Examiner(s): KING, CURTIS J
• Application Number:
  US12/350,266
• Publication Number:
  US 20100171641A1
• Time in Patent Office: 2,630 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes
• CPC Class Codes: G08G 1/167 Driving aids for lane monitoring, lane changing, e.g. blind spot detection

Abstract

A method for monitoring vehicle movement for use in a first vehicle includes the steps of determining a lane location at a first point in time, determining a position of a second vehicle at a second point in time, the second point in time being subsequent to the first point in time, and determining a path of the second vehicle based at least in part on the position of the second vehicle and the lane location.

Claims

1. A method of monitoring vehicle movement for use in a first vehicle, the method comprising the steps of:

determining a lane location of the first vehicle at a first point in time;

determining a position of a second vehicle at a second point in time, the second point in time being subsequent to the first point in time;

determining additional lane locations of the first vehicle at a plurality of additional points in time, each of the additional points comprising a different intermediate point in time that is subsequent to the first point in time and prior to the second point in time;

determining additional positions of the second vehicle at the intermediate points in time; and

determining, via a processor, a path of the second vehicle based at least in part on the position of the second vehicle at the second point in time, the additional positions of the second vehicle at the intermediate points in time, the lane location of the first vehicle at the first point in time, and the additional lane locations of the first vehicle at the intermediate points in time, for use in evaluating possible intersection of paths between the first and second vehicles,

wherein determining a position of the second vehicle comprises correlating prior lane locations of the first vehicle with subsequent positions of the second vehicle, to ascertain a relationship between a current position of the second vehicle and a current location of the lane with respect to the second vehicle.

2. The method of claim 1, further comprising the step of:

storing the lane location, the additional location, the position, and the additional positions in memory in the first vehicle.

3. The method of claim 1, further comprising the step of:

comparing the path of the second vehicle with a path of the first vehicle using the lane location of the first vehicle at the first point in time, the position of the second vehicle at the second point in time, the additional positions of the second vehicle at the intermediate points in time, and the additional lane locations of the first vehicle at the intermediate points in time.

4. The method of claim 3, further comprising the step of:

providing a warning if the respective paths of the first vehicle and the second vehicle will intersect in a manner that will result in a collision between the first and second vehicles if the first and second vehicles continue in their respective paths using the lane location of the first vehicle at the first point in time, the position of the second vehicle at the second point in time, the additional positions of the second vehicle at the intermediate points in time, and the additional lane locations of the first vehicle at the intermediate points in time.

5. The method of claim 1, wherein:

the step of determining the lane location comprises the step of determining the lane location at the first point in time, the lane location being at least partially in front of the first vehicle at the first point in time and at least partially behind the first vehicle at the second point in time.

6. The method of claim 1, further comprising:

determining an intended lane of the second vehicle based at least in part on the relationship.

7. The method of claim 1, further comprising:

determining if the second vehicle is encroaching on the lane of the first vehicle, if the second vehicle is trailing the first vehicle, based at least in part on a lane position of the first vehicle as identified using a camera on the first vehicle and a current position of the second vehicle that is identified using a radar system on the first vehicle shortly after the identification of the lane position of the first vehicle by the camera.

8. A system for monitoring vehicle movement for use in a first vehicle, the system comprising:

a first detection unit configured to at least facilitate obtaining a lane location of the first vehicle at a first point in time;

a second detection unit configured to at least facilitate obtaining a position of a second vehicle at a second point in time, the second point in time being subsequent to the first point in time;

wherein;

the first detection unit is further configured to at least facilitate obtaining additional lane locations of the first vehicle at a plurality of additional points in time, each of the additional points comprising a different intermediate point in time that is subsequent to the first point in time and prior to the second point in time; and

the second detection unit is further configured to at least facilitate obtaining additional positions of the second vehicle at the intermediate points in time; and

a processor coupled to the first detection unit and the second detection unit and configured to at least facilitate determining a path of the second vehicle based at least in part on the position of the second vehicle at the second point in time, the additional positions of the second vehicle at the intermediate points in time, the lane location of the first vehicle at the first point in time, and the additional lane locations of the first vehicle at intermediate points in time, for use in evaluating possible intersection of paths between the first and second vehicles,

wherein the processor is further configured to at least facilitate determining if the second vehicle is encroaching on the lane of the first vehicle, if the second vehicle is trailing the first vehicle, based at least in part on a lane position of the first vehicle as identified using a camera on the first vehicle and a current position of the second vehicle that is identified using a radar system on the first vehicle shortly after the identification of the lane position of the first vehicle by the camera.

9. The system of claim 8, wherein further comprising:

a memory disposed within the first vehicle, the memory configured to at least facilitate storing the lane location, the additional location, the position, and the additional positions.

10. The system of claim 8, wherein:

the processor is further configured to at least facilitate comparing the path of the second vehicle to a path of the first vehicle using the lane location of the first vehicle at the first point in time, the position of the second vehicle at the second point in time, the additional positions of the second vehicle at the intermediate points in time, and the additional lane locations of the first vehicle at the intermediate points in time.

11. The system of claim 10, wherein the processor is further configured to at least facilitate providing a warning if the respective paths of the first vehicle and the second vehicle will intersect in a manner that will result in a collision between the first and second vehicles if the first and second vehicles continue in their respective paths using the lane location of the first vehicle at the first point in time, the position of the second vehicle at the second point in time, the additional positions of the second vehicle at the intermediate points in time, and the additional lane locations of the first vehicle at the intermediate points in time.

12. The system of claim 8, wherein the lane location is at least partially in front of the first vehicle at the first point in time and at least partially behind the first vehicle at the second point in time.

13. The system of claim 8, wherein:

the first detection unit comprises a lane departure warning system; and

the second detection unit comprises a side blind zone alert system.

14. The system of claim 13, wherein:

the lane departure warning system comprises a camera disposed on a front side of the vehicle; and

the side blind zone alert system comprises a radar system disposed on a passenger side or driver side of the vehicle.

15. A method of monitoring vehicle movement for use in a first vehicle, the method comprising the steps of:

determining a lane location of the first vehicle at a first point in time;

determining a position of a second vehicle at a second point in time, the second point in time being subsequent to the first point in time;

determining additional lane locations of the first vehicle at a plurality of additional points in time, each of the additional points comprising a different intermediate point in time that is subsequent to the first point in time and prior to the second point in time;

determining additional positions of the second vehicle at the intermediate points in time;

determining, via a processor, a path of the second vehicle based at least in part on the position of the second vehicle at the second point in time, the additional positions of the second vehicle at the intermediate points in time, the lane location of the first vehicle at the first point in time, and the additional lane locations of the first vehicle at the intermediate points in time, for use in evaluating possible intersection of paths between the first and second vehicles; and

determining if the second vehicle is encroaching on the lane of the first vehicle, if the second vehicle is trailing the first vehicle, based at least in part on a lane position of the first vehicle as identified using a camera on the first vehicle and a current position of the second vehicle that is identified using a radar system on the first vehicle shortly after the identification of the lane position of the first vehicle by the camera.