SYSTEM FOR WARNING OF DROWSINESS OF DRIVER AND METHOD THEREOF

• US 20170096063A1
• Filed: 09/29/2016
• Published: 04/06/2017
• Est. Priority Date: 10/05/2015
• Status: Active Grant

• Current Assignee: HL Mando Corporation (Halla Holdings Corporation)
• Original Assignee: Mando Corporation
• Inventors: JANG, HyunSeop
• Granted Patent: US 10,029,568 B2
• Time in Patent Office: Days
• CPC Class Codes: B60K 28/066 actuating a signalling device B60K28/063 takes precedence
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/18 Steering angle
• CPC Class Codes: B60W 30/12 Lane keeping
• CPC Class Codes: G08B 21/02 Alarms for ensuring the safety of persons

Abstract

The present embodiment provides a driver'"'"'s drowsiness warning system. The driver'"'"'s drowsiness warning system according to the present embodiments of the present disclosure may include: a steering angle sensor that measures a steering signal; a lane recognizing sensor that recognizes a lane; a lane keeping assist unit that determines whether a vehicle is out of a lane that the vehicle drives along; and a controller that determines whether a driver is drowsy based on at least one out of a frequency of a change in the steering signal during a predetermined period of time and how frequently the vehicle is out of the lane during a predetermined period of time, and generates a warning to the driver when it is determined that the driver is drowsy.

Claims

1. A driver'"'"'s drowsiness warning system, comprising:

a steering angle sensor configured to measure a steering signal;

a lane recognizing sensor configured to recognize a lane;

a lane keeping assist unit configured to determine whether a vehicle is out of a lane that the vehicle drives along; and

a controller configured to;

determine whether a driver is drowsy based on at least one out of a frequency of a change in the steering signal during a predetermined period of time and whether the vehicle is out of the lane that the vehicle drives along when it is determined that the vehicle drives in a straight line based on the steering signal; and

generate a warning to the driver when it is determined that the driver is drowsy.

2. The system of claim 1, further comprising:

a vehicle speed sensor configured to measure a vehicle speed,

wherein the controller determines whether the driver is drowsy when the vehicle speed is greater than or equal to a predetermined speed.

3. The system of claim 1, wherein the controller determines that the driver is drowsy when the frequency of a change in the steering signal during a predetermined period of time is greater than or equal to a predetermined reference frequency.

4. The system of claim 1, wherein, when it is determined that the frequency of a change in the steering signal during a predetermined period of time is greater than or equal to a predetermined reference frequency, and the vehicle is out of the lane that the vehicle drives along, the controller determines that the driver is drowsy.

5. The system of claim 1, wherein, when it is determined that the frequency of a change in the steering signal during a predetermined period of time is greater than or equal to a predetermined reference frequency and a state in which the vehicle is out of the lane that the vehicle drives along is maintained at least a predetermined period of time, the controller determines that the driver is drowsy.

6. The system of claim 1, wherein the warning includes at least one out of steering reaction controlling, sound warning, gauge warning, and emergency light warning.

7. A driver'"'"'s drowsiness warning method, which is executed in a system that includes a steering angle sensor, a lane recognizing sensor, a lane keeping assist unit that enables a vehicle to keep a lane, and a controller, the method comprising:

measuring, by the steering angle sensor, a steering signal;

recognizing, by the lane recognizing sensor, a lane;

determining, by the lane keeping assist unit, whether a vehicle is out of the lane based on the recognized lane;

determining whether a driver is drowsy based on at least one out of a frequency of a change in the steering signal during a predetermined period of time and whether the vehicle is out of the lane that the vehicle drives along when it is determined that the vehicle drives in a straight line based on the steering signal; and

generating, by the controller, a warning to the driver when it is determined that the driver is drowsy.

8. The method of claim 7, wherein the system further comprises a vehicle speed sensor that measures a vehicle speed;

and

the determining of whether the driver is drowsy is performed when the vehicle speed is greater than or equal to a predetermined speed.

9. The method of claim 7, wherein the determining of whether the driver is drowsy comprises:

determining that the driver is drowsy when the frequency of a change in the steering signal during a predetermined period of time is greater than or equal to a predetermined reference frequency.

10. The method of claim 7, wherein the determining of whether the driver is drowsy comprises:

determining that the driver is drowsy when it is determined that the frequency of a change in the steering signal during a predetermined period of time is greater than or equal to a predetermined reference frequency, and the vehicle is out of a lane that the vehicle drives along.

11. The method of claim 7, wherein the determining of whether the driver is drowsy comprises:

determining that the driver is drowsy when it is determined that the frequency of a change in the steering signal during a predetermined period of time is greater than or equal to a predetermined reference frequency, and a state in which the vehicle is out of the lane that the vehicle drives along, is maintained at least a predetermined period of time.

12. The method of claim 7, wherein the warning includes at least one out of steering reaction controlling, sound warning, gauge warning, and emergency light warning.