Automated speed control system
An automated speed control system includes a ranging-sensor, a camera, and a controller. The ranging-sensor detects a lead-speed of a lead-vehicle traveling ahead of a host-vehicle. The camera detects an object in a field-of-view. The controller is in communication with the ranging-sensor and the camera. The controller is operable to control the host-vehicle. The controller determines a change in the lead-speed based on the ranging-sensor. The controller reduces a host-speed of the host-vehicle when the lead-speed is decreasing, no object is detected by the camera, and while a portion of the field-of-view is obscured by the lead-vehicle.
1. A system comprising:
a controller configured to:
receive, from a ranging sensor that is local to a host vehicle, signal characteristics associated with a lead vehicle traveling ahead of the host vehicle in a lane adjacent to that of the host vehicle;
receive, from a camera that is local to the host vehicle, images; and
decrease a speed of the host vehicle responsive to the controller determining that:
a speed of the lead vehicle has decreased an amount based on the signal characteristics received from the ranging sensor;
an object exists in front of the host vehicle based on one or more of the images; and
a portion of interest within the one or more of the images is occluded by the lead vehicle, the portion of interest corresponding to a portion of the object.
2. The system of claim 1 , wherein the amount corresponds to a change threshold.
3. The system of claim 1 , wherein decreasing the speed of the host vehicle comprises decreasing the speed of the host vehicle to match the speed of the lead vehicle.
4. The system of claim 1 , wherein decreasing the speed of the host vehicle comprises stopping the host vehicle.
5. The system of claim 1 , wherein the controller is further configured to decrease the speed of the host vehicle by:
activating a braking-actuator of the host vehicle; or
adjusting an accelerator position of the host vehicle.
6. The system of claim 1 , wherein the signal characteristics are radar or lidar characteristics.
7. The system of claim 1 , wherein the controller is further configured to:
identify the object within the one or more of the images; and
define the portion of interest based on the identification of the object.
8. The system of claim 7 , wherein the object is a crosswalk.
9. The system of claim 8 , wherein the portion of interest corresponds to an end of the crosswalk.
10. The system of claim 9 , wherein the identification of the crosswalk is based on a sign detected in the one or more of the images.
11. A system comprising:
a controller configured to:
receive, from a ranging sensor that is local to a host vehicle, signal characteristics associated with objects around the host vehicle;
receive, from a camera that is local to the host vehicle, images; and
decrease a speed of the host vehicle responsive to the controller determining that:
a speed of a lead vehicle in a lane adjacent to that of the host vehicle has decreased by an amount based on the signal characteristics received from the ranging sensor;
an obstruction exists ahead of the host vehicle in a path of the host vehicle based on the signal characteristics received from the ranging sensor;
the obstruction cannot be determined within one or more of the images received from the camera; and
a conflict exists between the signal characteristics and the images regarding the obstruction.
12. The system of claim 11 , wherein the signal characteristics are radar or lidar characteristics.
13. The system of claim 11 , wherein the obstruction cannot be determined within the one or more of the images based on a color of the obstruction.
14. The system of claim 13 , wherein the color of the obstruction corresponds to a color of a horizon or sky.
15. The system of claim 11 , wherein determining the obstruction comprises determining that an object exists at or near a road level in the path of the host vehicle.
16. The system of claim 11 , wherein the amount corresponds to a change threshold.
17. The system of claim 11 , wherein decreasing the speed of the host vehicle comprises decreasing the speed of the host vehicle to match the speed of the lead vehicle.
18. The system of claim 11 , wherein decreasing the speed of the host vehicle comprises stopping the host vehicle.
19. The system of claim 11 , wherein the controller is further configured to decrease the speed of the host vehicle by:
activating a braking-actuator of the host vehicle; or
adjusting an accelerator position of the host vehicle.
20. A system comprising:
a controller configured to:
receive, from a ranging sensor that is local to a host vehicle, signal characteristics associated with objects surrounding the host vehicle;
receive, from a camera that is local to the host vehicle, images; and
decrease a speed of the host vehicle responsive to the controller determining that:
a speed of a lead vehicle traveling ahead of the host vehicle in a lane adjacent to that of the host vehicle has decreased an amount based on the signal characteristics received from the ranging sensor;
an object exists in front of the host vehicle based on the signal characteristic received from the ranging sensor; and
a portion of interest corresponding to a location of the object is occluded by the lead vehicle in one or more of the images received by the camera.
21. The system of claim 20 , wherein the object is a pedestrian.
22. The system of claim 20 , wherein the object is in the lane adjacent to that of the host vehicle.