Driving assistance system, vehicle control method and program

Abstract

This reduces the possibility of excessive deceleration by curve driving control when a vehicle is traveling through a roundabout, and reduces the possibility of difficulty in accelerating when a vehicle is exiting a roundabout due to curve driving control. [Solution] The driver assistance device is capable of performing roundabout driving control and curve driving control. In roundabout driving control, when the vehicle is driving through a roundabout, the vehicle's driving state is controlled so that the vehicle speed matches a predetermined target speed. In curve driving control, when the vehicle is driving through a curve, at least one of the following is performed: suppression of vehicle acceleration and deceleration of vehicle. When a start condition, including the condition that a roundabout has been detected, is met, the driver assistance device starts roundabout driving control, and after the start of roundabout driving control, when a predetermined suppression start condition is met, the curve driving control is suppressed.

Claims

1. A driver assistance device capable of performing roundabout driving control for controlling the driving state of a vehicle so that the vehicle speed, which represents the speed of the vehicle, matches a predetermined target vehicle speed when the vehicle is driving through a roundabout, and curve driving control for suppressing the acceleration of the vehicle and decelerating the vehicle when the vehicle is driving on a curve, The aforementioned driving support device, When a start condition is met that includes at least the condition that the roundabout is detected in the direction of travel of the vehicle, the roundabout driving control is started. If a predetermined suppression start condition is met after the start of the roundabout driving control, the curve driving control is suppressed. A driver assistance system configured in such a way.

2. In the driving support device according to claim 1, The aforementioned driving assistance device is configured to satisfy the suppression start condition at the latest when it determines that the vehicle has exited the roundabout. Driving assistance system.

3. In the driving support device according to claim 2, The aforementioned driving assistance device is configured to satisfy the suppression start condition when the vehicle enters the roundabout and the vehicle speed is below a predetermined suppression start speed. Driving assistance system.

4. In the driving support device according to claim 3, The aforementioned driving assistance device is configured to pre-set the suppression start speed to the target speed of the roundabout. Driving assistance system.

5. In the driving support device according to claim 1, The aforementioned driving assistance device is configured to terminate the suppression of curve driving control when a predetermined end time has elapsed from the time it is determined that the vehicle has exited the roundabout. Driving assistance system.

6. In the driving support device according to claim 5, The aforementioned driving support device, The first determination method and the second determination method are used to determine whether the vehicle has exited the roundabout. Depending on the method used to determine that the vehicle has exited the roundabout, the closing time will be varied. A driver assistance system configured in such a way.

7. In the driving support device according to claim 6, The first determination method determines that the vehicle has exited the roundabout earlier than the second determination method. The driver assistance device is configured such that, when it is determined using the first determination method that the vehicle has exited the roundabout, the end time is made longer than when it is determined using the second determination method that the vehicle has exited the roundabout. Driving assistance system.

8. In the driving support device according to claim 7, The aforementioned driving support device, The first determination method determines whether the vehicle has exited the roundabout based on the operation performed by the driver on the steering wheel or turn signal lever. In the second determination method, it is determined whether the vehicle has exited the roundabout based on the map data in which the location of the roundabout is registered and the current location of the vehicle. A driver assistance system configured in such a way.

9. A vehicle control method in which a computer mounted on a vehicle can perform roundabout driving control to control the driving state of the vehicle so that the vehicle speed, which represents the speed of the vehicle, matches a predetermined target vehicle speed when the vehicle is driving through a roundabout, and curve driving control to suppress the acceleration of the vehicle and decelerate the vehicle when the vehicle is driving on a curve, The aforementioned vehicle control method is: The steps include: when a start condition is met which includes at least the condition that the roundabout is detected in the direction of travel of the vehicle, the computer starts the roundabout driving control; If a predetermined suppression start condition is met after the start of the roundabout driving control, the computer suppresses the curve driving control. A vehicle control method, including the following.

10. A program that can cause a computer mounted on a vehicle to perform roundabout driving control to control the driving state of the vehicle so that the vehicle speed, which represents the speed of the vehicle, matches a predetermined target vehicle speed when the vehicle is driving through a roundabout, and curve driving control to suppress the acceleration of the vehicle and decelerate the vehicle when the vehicle is driving on a curve, The program is installed on the computer. The step of starting the roundabout driving control when a start condition is met that includes at least the condition that the roundabout is detected in the direction of travel of the vehicle, If a predetermined suppression start condition is met after the start of the roundabout driving control, the curve driving control is suppressed. A program that executes something.

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