Vehicle and method for supporting driving safety thereof

1. A method for adjusting a driving control authority of a vehicle, the method comprising:

generating stimulation including sound generated when a driver boards the vehicle for a driver using a stimulation generator, wherein the sound includes a welcome sound or a seat belt warning sound;

measuring a driver reaction signal in response to the generated stimulation using a measurement device, wherein the driver reaction signal comprises measuring a brainwave of the driver;

processing the measured driver reaction signal using a signal processor;

determining a driver state based on the processed driver reaction signal using a processor; and

adjusting the driving control authority of the vehicle according to the determined driver state using a vehicle controller,

wherein the processing of the driver reaction signal comprises:

performing filtering on the driver reaction signal to classify a signal other than the brainwave as noise;

extracting an event-related potential (ERP) from the filtered driver reaction signal; and

extracting, from the ERP, a potential having a maximum amplitude value after a specific time elapses from a time at which the stimulation is generated.

2. The method of claim 1 , wherein the measuring of the driver reaction signal comprises:

measuring a bio-signal of the driver.

3. The method of claim 2 , wherein the measuring of the driver reaction signal further comprises:

measuring one of a heart rate of the driver and gaze information of the driver.

4. The method of claim 3 , wherein the determining of the driver state comprises:

determining the driver state to be a normal state when the maximum amplitude value of the brainwave is greater than or equal to a reference value.

5. The method of claim 4 , wherein the adjusting of the driving control authority of the vehicle comprises:

controlling operation of the vehicle such that the vehicle performs either autonomous driving or manual driving when the driver state is the normal state.

6. The method of claim 3 , wherein the determining of the driver state comprises:

determining the driver state to be an abnormal state when the maximum amplitude value of the brainwave is less than a reference value.

7. The method of claim 6 , wherein the adjusting of the driving control authority of the vehicle comprises:

controlling operation of the vehicle such that the vehicle performs either autonomous driving or an emergency stop when the driver state is the abnormal state.

8. A system for adjusting a driving control authority of a vehicle, the system comprising:

a stimulation generator to generate stimulation for a driver, wherein the stimulation including sound generated when a driver boards the vehicle, wherein the sound includes a welcome sound or a seat belt warning sound;

a measurement device including a sensor device configured to measure a driver reaction signal in response to the generated stimulation;

a signal processor configured to:

process the measured driver reaction signal, wherein the driver reaction signal comprises measuring a brainwave of the driver;

perform filtering on the driver reaction signal to classify a signal other than the brainwave as noise;

extract an event-related potential (ERP) from the filtered driver reaction signal; and

extract, from the ERP, a potential having a maximum amplitude value after a specific time elapses from a time at which the stimulation is generated;

a processor configured to determine a driver state based on the processed driver reaction signal; and

a vehicle controller configured to adjust the driving control authority of the vehicle according to the determined driver state.

9. The system of claim 8 , wherein the sensor device is included in the vehicle or wearable by the driver.

10. The system of claim 8 , wherein the processor determines the driver state to be a normal state when the maximum amplitude value of the brainwave is greater than or equal to a reference value.

11. The system of claim 10 , wherein the vehicle controller controls operation of the vehicle such that the vehicle performs autonomous driving or manual driving when the driver state is the normal state.

12. The system of claim 8 , wherein the processor determines the driver state to be an abnormal state when the maximum amplitude value of the brainwave is less than a reference value.

13. The system of claim 12 , wherein the vehicle controller controls operation of the vehicle such that the vehicle performs either autonomous driving or an emergency stop when the driver state is the abnormal state.