Radar system control to perform cross-traffic management in a vehicle with a trailer

Patent metadata

Field	Value
Publication number	US-11525911-B2
Application number	US-201916684262-A
Country	US
Kind code	B2
Filing date	Nov 14, 2019
Priority date	Nov 14, 2019
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

Systems and methods to control a radar system to perform cross-traffic management in a vehicle with a trailer involve determining a location of the trailer behind the vehicle, and adjusting an initial field of view of the radar system to a modified field of view that excludes the location of the trailer. One or more other vehicles are detected with the radar system having the modified field of view. A cross-traffic alert is implemented based on the detecting the one or more other vehicles.

First claim

What is claimed is:

1. A method for controlling a radar system to perform cross-traffic management in a vehicle with a trailer, the method comprising:
determining, using a controller, a location of the trailer behind the vehicle;
adjusting a field of view of the radar system such that the field of view excludes the location of the trailer;
detecting one or more other vehicles with the radar system having the modified field of view; and
implementing a cross-traffic alert or automatic braking based on the detecting the one or more other vehicles.

2. The method according to claim 1 , further comprising obtaining dimensions of the trailer.

3. The method according to claim 2 , further comprising obtaining an articulation angle, the articulation angle being an angle between a center axial line of the vehicle and a center axial line of the trailer.

4. The method according to claim 3 , wherein the obtaining the articulation angle includes performing image processing on an image obtained by a camera with a field of view that includes the trailer.

5. The method according to claim 3 , wherein the determining the location of the trailer behind the vehicle is based on the dimensions of the trailer and on the articulation angle.

6. The method according to claim 1 , further comprising determining an overlap region between the field of view prior to the adjusting and the location of the trailer.

7. The method according to claim 6 , wherein the adjusting the field of view includes excluding the overlap region in the field of view based on turning off a subset of antenna elements or on performing beamforming.

8. The method according to claim 1 , further comprising filtering reflections received as a result of transmission by the radar system in the field of view to eliminate any of the reflections that result from the trailer.

9. The method according to claim 1 , further comprising determining, using the controller, whether the vehicle is in reverse gear, wherein implementing the method is based on determining that the vehicle is in the reverse gear.

10. The method according to claim 1 , further comprising computing a time to collision based on the detecting the one or more other vehicles in a path of the vehicle and providing the cross-traffic alert or implementing the automatic braking based on the time to collision being less than a threshold value.

11. A system to perform cross-traffic management in a vehicle with a trailer, the system comprising:
a radar system with a modified field of view, the radar system configured to detect one or more other vehicles; and
a controller configured to determine a location of the trailer behind the vehicle, to adjust a field of view of the radar system such that the field of view excludes the location of the trailer, and to implement a cross-traffic alert or automatic braking based on the radar system detecting the one or more other vehicles.

12. The system according to claim 11 , wherein the controller is configured to obtain dimensions of the trailer.

13. The system according to claim 12 , wherein the controller is configured to obtain an articulation angle, the articulation angle being an angle between a center axial line of the vehicle and a center axial line of the trailer.

14. The system according to claim 13 , further comprising a camera, wherein the controller is configured to obtain the articulation angle by performing image processing on an image obtained by the camera with a field of view that includes the trailer.

15. The system according to claim 13 , wherein the controller is configured to determine the location of the trailer behind the vehicle based on the dimensions of the trailer and on the articulation angle.

16. The system according to claim 11 , wherein the controller is configured to determine an overlap region between the field of view prior to adjustment and the location of the trailer.

17. The system according to claim 16 , wherein the controller is configured to exclude the overlap region to adjust the field of view, and the radar system is configured to implement the adjustment of the field of view based on turning off a subset of antenna elements or on performing beamforming.

18. The system according to claim 11 , wherein the controller is further configured to filter reflections received as a result of transmission by the radar system in the field of view to eliminate any of the reflections that result from the trailer.

19. The system according to claim 11 , wherein the controller is further configured to determine whether the vehicle is in reverse gear and to implement the cross-traffic alert based on determining that the vehicle is in the reverse gear.

20. The system according to claim 11 , wherein the controller is further configured to compute a time to collision based on the one or more other vehicles being in a path of the vehicle and to implement the cross-traffic alert or the automatic braking based on the time to collision being less than a threshold value.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Sim Jay H
• Francisco Justin K
• Korchmaros Kevin G

Classifications

• B60T7/20

  specially for trailers, e.g. in case of uncoupling of {or overrunning by} trailer (inertia-actuated overrun brakes B60T13/08) · CPC title

• B60T2230/08

  Driving in reverse · CPC title

• G01S2013/9317

  Driving backwards · CPC title

• B60T2230/06

  Tractor-trailer swaying · CPC title

• G01S13/931 Primary

  of land vehicles · CPC title