Autonomous driving control apparatus and method thereof

1 . An autonomous driving control apparatus comprising:

a display device;

a notification device;

a memory storing at least one instruction and a map table comprising a ramp-down time; and

a controller operatively connected to the display device, the notification device, and the memory,

wherein the at least one instruction is configured to, when executed by the controller, cause the autonomous driving control apparatus to:

determine, while performing autonomous driving control of a host vehicle, a hands-off time duration in which a driver of the host vehicle takes both hands off a steering wheel of the host vehicle;

provide, based on the hands-off time duration being greater than a first threshold time duration or based on lateral acceleration of the host vehicle being maintained at a value greater than a threshold value for at least a second threshold time duration in a hands-off situation, a first notification using at least one of the display device or the notification device, wherein the ramp-down time corresponds to a curvature of a road and the lateral acceleration;

determine, based on a hands-off status and using the map table, the ramp-down time corresponding to the curvature and the lateral acceleration; and

ramp down an output torque during the ramp-down time.

2 . The autonomous driving control apparatus of claim 1 , wherein the at least one instruction is configured to, when executed by the controller, cause the autonomous driving control apparatus to provide the first notification by displaying, using the display device, information about at least one of: an ambient temperature of the host vehicle, a driving speed of the host vehicle, a driving mode of the host vehicle, a road on which the host vehicle is traveling, an object proximate to the host vehicle, a remaining distance to a destination, a total driving distance, or a guide about a hands-off situation.

3 . The autonomous driving control apparatus of claim 1 , wherein the at least one instruction is configured to, when executed by the controller, cause the autonomous driving control apparatus to update the map table using an artificial intelligence model.

4 . The autonomous driving control apparatus of claim 1 , wherein a ramp-down time during a hands-on status is less than the ramp-down time during the hands-off status.

5 . The autonomous driving control apparatus of claim 1 , wherein the at least one instruction is configured to, when executed by the controller, further cause the autonomous driving control apparatus to:

provide, based on the hands-off time duration being greater than a third threshold time duration and based on the autonomous driving control of the host vehicle being released, a second notification using at least one of the display device or the notification device, wherein the third threshold time duration is greater than the first threshold time duration.

6 . The autonomous driving control apparatus of claim 5 , wherein the at least one instruction is configured to, when executed by the controller, cause the autonomous driving control apparatus to provide the second notification by:

displaying, using the display device, information about at least one of: an ambient temperature of the host vehicle, a driving speed of the host vehicle, a driving mode of the host vehicle, a road on which the host vehicle is traveling, an object proximate to the host vehicle, a remaining distance to a destination, a total driving distance, or a guide about a hands-off situation; and

outputting, using the notification device, a warning sound associated with the hands-off situation or a release of the autonomous driving control.

7 . The autonomous driving control apparatus of claim 1 , further comprising:

a sensor,

wherein the at least one instruction is configured to, when executed by the controller, further cause the autonomous driving control apparatus to:

determine, using the sensor, the curvature of the road on which the host vehicle is traveling; and

ramp down, based on at least one of the curvature or the lateral acceleration and based on the autonomous driving control of the host vehicle being released, the output torque for controlling the host vehicle.

8 . The autonomous driving control apparatus of claim 7 , wherein the at least one instruction is configured to, when executed by the controller, cause the autonomous driving control apparatus to:

ramp down, based on a hands-on status in which the driver of the host vehicle keeps at least one hand on the steering wheel of the host vehicle, the output torque during a predetermined time.

9 . The autonomous driving control apparatus of claim 7 , wherein the at least one instruction is configured to, when executed by the controller, further cause the autonomous driving control apparatus to:

release, based on first sensor data of the sensor for the autonomous driving control being out of a specified range, the autonomous driving control;

based on at least one of the curvature or the lateral acceleration, ramp down the output torque for controlling the host vehicle; and

based on second sensor data of the sensor while ramping down the output torque being within the specified range, resume the autonomous driving control.

10 . An autonomous driving control method comprising:

determining, by a controller and while performing autonomous driving control of a host vehicle, a hands-off time duration in which a driver of the host vehicle takes both hands off a steering wheel of the host vehicle;

based on the hands-off time duration being greater than a first threshold time duration or based on lateral acceleration of the host vehicle being maintained at a value greater than a threshold value for at least a second threshold time duration in a hands-off situation, providing, by the controller, a first notification using at least one of a display device or a notification device;

determining, based on a hands-off status and using a map table, a ramp-down time corresponding to a curvature of a road and the lateral acceleration; and

ramping down, during the ramp-down time, an output torque for controlling the host vehicle.

11 . The autonomous driving control method of claim 10 , wherein the providing of the first notification comprises:

providing the first notification by displaying, using the display device, information about at least one of: an ambient temperature of the host vehicle, a driving speed of the host vehicle, a driving mode of the host vehicle, a road on which the host vehicle is traveling, an object proximate to the host vehicle, a remaining distance to a destination, a total driving distance, or a guide about a hands-off situation.

12 . The autonomous driving control method of claim 10 , further comprising:

providing, by the controller and based on the hands-off time duration being greater than a third threshold time duration and based on the autonomous driving control of the host vehicle being released, a second notification using at least one of the display device or the notification device, wherein the third threshold time duration is greater than the first threshold time duration.

13 . The autonomous driving control method of claim 12 , wherein the providing of the second notification comprises:

displaying, using the display device, information about at least one of an ambient temperature of the host vehicle, a driving speed of the host vehicle, a driving mode of the host vehicle, a road on which the host vehicle is traveling, an object proximate to the host vehicle, a remaining distance to a destination, a total driving distance, or a guide about a hands-off situation; and

outputting, using the notification device, a warning sound associated with the hands-off situation or a release of the autonomous driving control.

14 . The autonomous driving control method of claim 10 , further comprising:

determining, by the controller and using a sensor, the curvature of the road on which the host vehicle is traveling; and

ramping down, based on at least one of the curvature or the lateral acceleration and based on the autonomous driving control of the host vehicle being released, the output torque for controlling the host vehicle.

15 . The autonomous driving control method of claim 14 , wherein the ramping down of the output torque comprises:

ramping down, by the controller and based on a hands-on status in which the driver of the host vehicle keeps at least one hand on the steering wheel of the host vehicle, the output torque during a predetermined time.

16 . A non-transitory computer-readable storage medium storing instructions that, when executed, cause:

determining by a controller and while performing autonomous driving control of a host vehicle, a hands-off time duration in which a driver of the host vehicle takes both hands off a steering wheel of the host vehicle; and

providing, based on the hands-off time duration being greater than a first threshold time duration or based on lateral acceleration of the host vehicle being maintained at a value greater than a threshold value for at least a second threshold time duration in a hands-off situation, a first notification using at least one of a display device or a notification device;

determining, based on a hands-off status and using a map table stored in a memory, a ramp-down time corresponding to a curvature of a road on which the host vehicle is traveling and the lateral acceleration; and

ramping down, during the ramp-down time, an output torque for controlling the host vehicle.

17 . The non-transitory computer-readable storage medium of claim 16 , wherein the instructions, when executed, cause the providing of the first notification by:

displaying, using the display device, information about at least one of: an ambient temperature of the host vehicle, a driving speed of the host vehicle, a driving mode of the host vehicle, a road on which the host vehicle is traveling, an object proximate to the host vehicle, a remaining distance to a destination, a total driving distance, or a guide about a hands-off situation.

18 . The non-transitory computer-readable storage medium of claim 16 , wherein the instructions, when executed, further cause:

determining, using a sensor, the curvature of the road on which the host vehicle is traveling; and

based on at least one of the curvature or the lateral acceleration and based on the autonomous driving control of the host vehicle being released, ramping down the output torque for controlling the host vehicle.

19 . The non-transitory computer-readable storage medium of claim 16 , wherein the instructions, when executed, further cause:

providing, based on the hands-off time duration being greater than a third threshold time duration and based on the autonomous driving control of the host vehicle being released, a second notification using at least one of the display device or the notification device, wherein the third threshold time duration is greater than the first threshold time duration.

20 . The non-transitory computer-readable storage medium of claim 19 , wherein the instructions, when executed, cause the providing of the second notification by:

displaying, using the display device, information about at least one of: an ambient temperature of the host vehicle, a driving speed of the host vehicle, a driving mode of the host vehicle, a road on which the host vehicle is traveling, an object proximate to the host vehicle, a remaining distance to a destination, a total driving distance, or a guide about a hands-off situation; and

outputting, using the notification device, a warning sound associated with the hands-off situation or a release of the autonomous driving control.