Autonomous driving system and control method of autonomous driving system

1. An autonomous driving system configured to perform an autonomous driving of a vehicle, comprising:

an electronic control unit (ECU) including a processor programmed to:

generate a route for the autonomous driving of the vehicle;

determine whether the vehicle is located within a predetermined distance from a target point based on a signal received from outside of the vehicle,

wherein the target point is a pedestrian cross-walk where there is a traffic signal along the route;

based upon the determination that the vehicle is located within the predetermined distance, detect a lighting state of the traffic signal located at the target point;

based upon the determination that the vehicle reaches a trigger request position, request the driver to perform a trigger input, wherein the trigger request position is based on one or more of the following: the lighting state, a driver state, a distance from the target point, and a time from the target point; and

control the vehicle to pass through the target point without temporarily stopping if the trigger input from the driver is detected, and control the vehicle to decelerate and stop without passing through the target point if the trigger input from the driver is not detected,

wherein the ECU is programmed to notify the driver that the traffic signal is recognized as not being in a passing permitted state and perform a trigger input re-request if the traffic signal is recognized as not being in the passing permitted state and the trigger input is detected; and

wherein the ECU is programmed to cause the vehicle to pass through the target point without temporarily stopping if the trigger input is detected after the trigger input re-request, and cause the autonomously driving vehicle to decelerate and stop without passing through the target point if the trigger input is not detected after the trigger input re-request.

2. The autonomous driving system according to claim 1 , wherein, during the performance of the autonomous driving, the ECU controls an actuator, wherein the actuator comprises:

a throttle actuator that controls a driving force of the vehicle;

a brake actuator that controls a brake system by applying a braking force to the wheels of the vehicle; and

a steering actuator that controls the driving of an assist motor controlling a steer torque of an electric power steering system.

3. The autonomous driving system according to claim 1 ,

wherein the ECU is programmed to notify the driver that the traffic signal ahead has switched to a state other than the passing permitted state, and request the driver to perform the trigger input re-request if the switching of the traffic signal to the state other than the passing permitted state is recognized after the trigger input is detected, and

wherein the ECU is programmed to cause the vehicle to pass through the target point without temporarily stopping if the trigger input is detected after the trigger input re-request, and to cause the autonomously driving vehicle to decelerate and stop without passing through the target point if the trigger input is not detected after the trigger input re-request.

4. The autonomous driving system according to claim 1 ,

wherein the trigger input is one or more of the following types: an input by a driver's manual operation to a trigger input unit provided in the vehicle, an input by a driver accelerating the vehicle by activating an accelerator pedal, and an input by a driver's contact to a touch sensor of the vehicle.

5. The autonomous driving system according to claim 4 , wherein the ECU requests the driver to perform one type of the trigger input in the trigger input request, and request the driver to perform a plurality of types of the trigger input in the trigger input re-request.

6. A control method of an autonomous driving system that performs an autonomous driving of a vehicle using an electronic control unit, the method comprising:

generating a route for the autonomous driving of the vehicle;

determining whether the vehicle is located within a predetermined distance from a target point based on a signal received from outside of the vehicle,

wherein the target point is a pedestrian cross-walk where there is a traffic signal along the route;

based upon the determination that the vehicle is located within the predetermined distance, detecting a lighting state of the traffic signal located at the target point;

based upon the determination that the vehicle reaches a trigger request position, requesting the driver to perform a trigger input, wherein the trigger request position is based on one or more of the following: the lighting state, a driver state, a distance from the target point, and a time from the target point; and

controlling the vehicle to pass through the target point without temporarily stopping if the trigger input from the driver is detected, and controlling the vehicle to decelerate and stop without passing through the target point if the trigger input from the driver is not detected,

wherein, during autonomous controlling of the vehicle, notifying the driver that the traffic signal is recognized as not being in a passing permitted state and performing a trigger input re-request if the traffic signal is recognized as not being in the passing permitted state and the trigger input is detected; and

controlling the vehicle to pass through the target point without temporarily stopping if the trigger input is detected after the trigger input re-request, and controlling the autonomously driving vehicle to decelerate and stop without passing through the target point if the trigger input is not detected after the trigger input re-request.

7. The control method of the autonomous driving system according to claim 6 , wherein during autonomous controlling of the vehicle, an actuator performs the autonomous driving of the vehicle by using:

a throttle actuator to control a driving force of the vehicle;

a brake actuator to control a brake system by applying a braking force to the wheels of the vehicle; and

a steering actuator to control the driving of an assist motor controlling a steer torque of an electric power steering system.

8. The control method of the autonomous driving system according to claim 6 ,

wherein, during autonomous controlling of the vehicle, notifying the driver that the switching of the traffic signal to a state other than the passing permitted state is recognized and performing the trigger input re-request if the switching of the traffic signal to the state other than the passing permitted state is recognized after the trigger input is detected, and

controlling the vehicle to pass through the target point without temporarily stopping if the trigger input is detected after the trigger input re-request, and controlling the autonomously driving vehicle to decelerate and stop without passing through the target point if the trigger input is not detected after the trigger input re-request.

9. The control method of the autonomous driving system according to claim 6 ,

wherein the trigger input is one or more of the following types: an input by a driver's manual operation to a trigger input unit provided in the vehicle, an input by a driver accelerating the vehicle by activating on an accelerator pedal, and an input by a driver's contact to a touch sensor of the vehicle.

10. The control method of the autonomous driving system according to claim 9 , wherein the electronic control unit requests the driver to perform one type of the trigger input in the trigger input request, and requests the driver to perform a plurality of types of the trigger input in the trigger input re-request.

11. A non-transitory computer readable medium having stored thereon instructions which, when executed by at least one ECU, cause the at least one ECU to execute processing comprising:

generating a route for the autonomous driving of the vehicle;

determining whether the vehicle is located within a predetermined distance from a target point based on a signal received from outside of the vehicle,

wherein the target point is a pedestrian cross-walk where there is a traffic signal along the route;

based upon the determination that the vehicle is located within the predetermined distance, detecting a lighting state of the traffic signal located at the target point;

based upon the determination that the vehicle reaches a trigger request position, requesting the driver to perform a trigger input, wherein the trigger request position is based on one or more of the following: the lighting state, a driver state, a distance from the target point, and a time from the target point; and

controlling the vehicle to pass through the target point without temporarily stopping if the trigger input from the driver is detected, and controlling the vehicle to decelerate and stop without passing through the target point if the trigger input from the driver is not detected,

wherein, during autonomous controlling of the vehicle, notifying the driver that the traffic signal is recognized as not being in a passing permitted state and performing a trigger input re-request if the traffic signal is recognized as not being in the passing permitted state and the trigger input is detected; and

controlling the vehicle to pass through the target point without temporarily stopping if the trigger input is detected after the trigger input re-request, and controlling the autonomously driving vehicle to decelerate and stop without passing through the target point if the trigger input is not detected after the trigger input re-request.

12. The non-transitory computer readable medium according to claim 11 , wherein, during the performance of the autonomous driving, the ECU controls an actuator, wherein the actuator comprises:

a throttle actuator that controls the driving force of the vehicle;

a brake actuator that controls the brake system by applying a braking force to the wheels of the vehicle; and

a steering actuator that controls the driving of an assist motor controlling a steer torque of an electric power steering system.

13. The non-transitory computer readable medium according to claim 11 ,

wherein, during autonomous controlling of the vehicle, notifying the driver that the switching of the traffic signal to a state other than the passing permitted state is recognized and performing the trigger input re-request if the switching of the traffic signal to the state other than the passing permitted state is recognized after the trigger input is detected, and

controlling the vehicle to pass through the target point without temporarily stopping if the trigger input is detected after the trigger input re-request, and controlling the autonomously driving vehicle to decelerate and stop without passing through the target point if the trigger input is not detected after the trigger input re-request.

14. The non-transitory computer readable medium according to claim 11 ,

wherein, the trigger input is one or more of the following types: an input by a driver's manual operation to a trigger input unit provided in the vehicle, an input by a driver accelerating the vehicle by activating an accelerator pedal, and an input by a driver's contact to a touch sensor of the vehicle.

15. The non-transitory computer readable medium according to claim 14 , wherein electronic control unit requests the driver to perform one type of the trigger input in the trigger input request, and requests the driver to perform a plurality of types of the trigger input in the trigger input re-request.