Wearable device, vehicle for communicating with the wearable device

1. A wearable device comprising:

a communicator configured to perform a communication with a vehicle;

a detector configured to detect a user's biological information; and

a controller configured to perform a power save mode when vehicle speed information is received via the communicator, convert the power save mode into a normal mode when first determination information of drowsy driving is received via the communicator during the power save mode, secondly determine whether current driving is a drowsy driving based on the detected biological information during the normal mode, and when the drowsy driving is determined, allow second determination information of drowsy driving to be transmitted to the vehicle so that the second determining information is output from the vehicle,

wherein the first determination information of drowsy driving is information transmitted from the vehicle.

2. The wearable device of claim 1 , further comprising an output unit for outputting notification information related to a drowsy driving when the drowsy driving is determined.

3. The wearable device of claim 2 , wherein the output unit comprises a display for outputting the notification information as an image, and a vibrator for generating a vibration when the drowsy driving is determined.

4. The wearable device of claim 2 , further comprising a power supplier for supplying a power to the communicator, the detector, the controller and the output unit, wherein, during the power save mode, the controller controls the power supplier so that the power supplier supplies the power to the communicator and the controller, and during the normal mode, the controller controls the power supplier so that the power supplier supplies the power to the communicator, the detector, the controller and the output unit.

5. A wearable device comprising:

a first sensor configured to detect a user arm's movement information;

a second sensor configured to detect the user's biological response information;

a controller configured to determine whether a vehicle drives or not based on movement information detected by the first sensor, perform a power save mode when it is determined that the vehicle drives, firstly determine whether current driving is a drowsy driving based on movement information detected by the first sensor during the power save mode, convert the power save mode into a normal mode when it is firstly determined that current driving is a drowsy driving, secondly determine whether current driving is a drowsy driving based on biological response information detected by the second sensor during the normal mode, and when the drowsy driving is determined, control outputting notification information, and allow second determination information of drowsy driving to be transmitted to the vehicle so that the second determining information is output from the vehicle; and

an output unit configured to output the notification information.

6. The wearable device of claim 5 , wherein the output unit comprises a display for outputting the notification information as an image, a sound device for outputting the notification information as a sound, and a vibrator for generating a vibration when it is secondly determined that current driving is a drowsy driving.

7. The wearable device of claim 5 , further comprising a power supplier for supplying a power to the first sensor, the second sensor, the controller and the output unit, wherein during the power save mode, the controller controls the power supplier so that the power supplier supplies the power to the first sensor and the controller, and during the normal mode, the controller controls the power supplier so that the power supplier supplies the power to the first sensor, the second sensor, the controller and the output unit.

8. The wearable device of claim 5 , further comprising a storage for storing movement information to determine whether the vehicle drives and movement information to determine whether current driving is a drowsy driving.

9. A vehicle comprising:

a communicator for performing a communication with a wearable device and a navigation system;

a detector for detecting operation information of a steering wheel; and

a controller for firstly determining whether current driving is a drowsy driving based on the operation information detected by the detector when it is determined that a current position is a highway based on information transmitted from the navigation system, and for allowing first determination information of drowsy driving to be transmitted to the wearable device when it is firstly determined that current driving is a drowsy driving; and

a display for outputting notification information,

wherein the controller controls outputting the notification information when second information of drowsy driving is received from the wearable device.

10. The vehicle of claim 9 , further comprising a lane departure warning system for recognizing a lane departure, wherein the controller detects whether the vehicle is away from the lane or not when firstly determining whether current driving is a drowsy driving, for firstly determining that current driving is a drowsy driving when the vehicle is placed in a lane line adjacent to the lane of the vehicle, and for determining that current driving is not drowsy driving when the vehicle is placed in the lane of the vehicle.

11. The vehicle of claim 9 , wherein the operation information comprises a pressure applied to the steering wheel and a rotation angle of the steering wheel, wherein the controller firstly determines that current driving is a drowsy driving when the pressure applied to the steering wheel is less than a reference pressure and the rotation angle of the steering wheel is less than a reference angle.

12. The vehicle of claim 9 , wherein the detector further detects a driving speed, wherein the controller allows the detected driving speed information to be transmitted to the wearable device.