Drive mode switch control device and drive mode switch control method

1. A drive mode switch control device for a vehicle configured to control switching a drive mode between a driver control of the vehicle and an autonomous drive function, the vehicle including the autonomous drive function configured to perform a drive operation instead of the driver, the drive mode switch control device comprising:

a processor configured to

acquire operation information related to drive operations input by the driver;

switch a drive state among at least an autonomous drive state, a manual drive state, and a coordination drive state; and

detect an input of a first driving operation and an input of a second driving operation based on the acquired operation information, in response to the drive state not being in the manual drive state, wherein

in the autonomous drive state, a travel of the vehicle is controlled by the autonomous drive function,

in the manual drive state, the travel of the vehicle is controlled by the driver,

in the coordination drive state, the travel of the vehicle is controlled by coordinating a control of the autonomous drive function and the drive operations of the driver,

the first driving operation is a driving operation input to a first operation target in the vehicle by the driver and detected by a first sensor, the first driving operation being one of: actuating an accelerator pedal, actuating a brake pedal, actuating a steering wheel, and actuating a turn signal lever,

the second driving operation is a driving operation input to a second operation target in the vehicle by the driver and detected by a second sensor, the second driving operation being one of: actuating the accelerator pedal, actuating the brake pedal, actuating the steering wheel, and actuating a turn signal lever,

the first driving operation is different than the second driving operation,

the first operation target is different than the second operation target,

the first sensor is different than the second sensor, and

the processor is further configured to

switch the drive state from the autonomous drive state to the coordination drive state in response to detecting the first driving operation, and

switch the drive state from the coordination drive state to the manual drive state in response to detecting the second driving operation,

in response to the vehicle being in the coordination drive state and a first drive force input from the autonomous drive function being greater in magnitude than a second drive force input from the driver, the processor is further configured to control the vehicle in the coordination drive state with the first drive force input, and

in response to the vehicle being in the coordination drive state and the second drive force input from the driver being greater in magnitude than the first drive force input from the autonomous drive function, the processor is further configured to allow the driver to control the vehicle in the coordination drive state with the second drive force input.

2. The drive mode switch control device according to claim 1 , wherein

the processor is further configured to start switching the drive state from the coordination drive state to the manual drive state in response to executing a detection determination of the second driving operation.

3. The drive mode switch control device according to claim 1 , wherein

the processor is further configured to start switching the drive state from the coordination drive state to the manual drive state in response to the second driving operation continuing to exceed a predetermined switch standby time after executing a detection determination of the second driving operation.

4. The drive mode switch control device according to claim 1 , wherein

the processor is further configured to detect, as the second driving operation, a drive operation performed after a predetermined intention recovery time elapses after executing a detection determination of the second driving operation.

5. The drive mode switch control device according to claim 1 , wherein the processor is further configured to

request the driver to switch the drive mode from the autonomous drive function to the driver control of the vehicle,

switch the drive state to an autonomous retraction state in response to not executing a detection determination of the second driving operation within a request execution time for switching the drive mode, and

in response to being in the autonomous retraction state, stop the vehicle at a stop position determined by the autonomous drive function.

6. The drive mode switch control device according to claim 5 , wherein

the processor is further configured to switch the drive state from the coordination drive state to the autonomous drive state in response to not requesting the driver to switch the drive mode from the autonomous drive function to the driver control of the vehicle and a predetermined restart standby period elapsing without the detection determination of the second driving operation after switching the drive state to the coordination drive state based on a detection determination of the first driving operation.

7. The drive mode switch control device according to claim 1 , wherein

the first sensor is one of: an accelerator position sensor, a brake depression force sensor, a steering angle sensor, and a turn signal operation detection switch, and

the second sensor is one of: the accelerator position sensor, the brake depression force sensor, the steering angle sensor, and the turn signal operation detection switch.

8. A drive mode switch control method for a vehicle configured to control switching a drive mode between a driver control of the vehicle and an autonomous drive function, the vehicle including the autonomous drive function configured to perform a drive operation instead of the driver, and the drive mode switch control method being executed by at least one processing unit, the drive mode switch control method comprising:

acquiring operation information related to drive operations input by the driver;

detecting a first driving operation input by the driver based on the acquired operation information, in response to the vehicle not being in a manual drive state,

switching from an autonomous drive state to a coordination drive state in response to detecting the first driving operation;

detecting a second driving operation input by the driver based on the acquired operation information; and

switching from the coordination drive state to the manual drive state in response to detecting the second driving operation, wherein

in the autonomous drive state, a travel of the vehicle is controlled by the autonomous drive function,

in the manual drive state, the travel of the vehicle is controlled by the driver,

in the coordination drive state, the travel of the vehicle is controlled by coordinating a control of the autonomous drive function and the drive operations of the driver,

the first driving operation is a driving operation input to a first operation target in the vehicle by the driver and detected by a first sensor, the first driving operation being one of: actuating an accelerator pedal, actuating a brake pedal, actuating a steering wheel, and actuating a turn signal lever,

the second driving operation is a driving operation input to a second operation target in the vehicle by the driver and detected by a second sensor, the second driving operation being one of: actuating the accelerator pedal, actuating the brake pedal, actuating the steering wheel, and actuating the turn signal lever,

the first driving operation is different than the second driving operation,

the first operation target is different than the second operation target, and

the first sensor is different than the second sensor,

wherein the method further comprises:

in response to the vehicle being in the coordination drive state and a first drive force input from the autonomous drive function being greater in magnitude than a second drive force input from the driver, controlling the vehicle in the coordination drive state with the first drive force input, and

in response to the vehicle being in the coordination drive state and the second drive force input from the driver being greater in magnitude than the first drive force input from the autonomous drive function, allowing the driver to control the vehicle in the coordination drive state with the second drive force input.

9. The drive mode switch control method according to claim 8 , wherein

the first sensor is one of: an accelerator position sensor, a brake depression force sensor, a steering angle sensor, and a turn signal operation detection switch, and

the second sensor is one of: the accelerator position sensor, the brake depression force sensor, the steering angle sensor, and the turn signal operation detection switch.