LANE DEVIATION WARNING SYSTEM

• US 20090021358A1
• Filed: 01/10/2008
• Published: 01/22/2009
• Est. Priority Date: 07/16/2007
• Status: Abandoned Application

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: Lee, Jae Kwan, Sim, Sung Bo, Kim, Ryuk, Ryu, Je Hun
• Application Number:
  US11/972,355
• Publication Number:
  US 20090021358A1
• Time in Patent Office: Days
• US Class Current: 340/436
• CPC Class Codes: B60W 2552/00 Input parameters relating to infrastructure
• CPC Class Codes: B60W 2552/53 Road markings, e.g. lane marker or crosswalk
• CPC Class Codes: B60W 30/12 Lane keeping
• CPC Class Codes: B60W 50/14 Means for informing the driver, warning the driver or prompting a driver intervention
• CPC Class Codes: B62D 15/029 Steering assistants using warnings or proposing actions to the driver without influencing the steering system

Abstract

The lane deviation warning system is provided, including a traveling lane detection unit for detecting a traveling lane; an operation detection unit connected to at least a sensor and for detecting motion of the vehicle in real time; a controller for controlling to calculate and output a traveling lane deviation time point of the vehicle according to data detected through the traveling lane detection unit and the operation detection unit by setting at least a critical line of the traveling lane based on data detected through the traveling lane detection unit, and to output a corresponding warning signal when the vehicle reaches at least a preset critical line; and a warning device driver for controlling to drive at least one of a first warning means and a second warning means according to a warning signal output from the controller.

Claims

1. A lane deviation warning system of a vehicle comprising:

a traveling lane detection unit for detecting at least a traveling lane;

an operation detection unit monitoring at least a sensor and detecting motion of the vehicle in real time through the sensor;

a controller for controlling to calculate and output a traveling lane deviation time point of the vehicle according to data detected through the traveling lane detection unit and the operation detection unit by setting at least a critical line of the traveling lane based on data detected through the traveling lane detection unit, and to output a corresponding warning signal when the vehicle reaches at least a preset critical line; and

a warning device driver for controlling at least one of a first warning means and a second warning means according to a warning instruction output from the controller.

2. The lane deviation warning system of claim 1, wherein the traveling lane deviation time point t_d is represented by

$\begin{array}{cc}{t}_d=\frac{d}{V}& \mathrm{Equation}\end{array}$

where d is an estimated deviation distance and V is a traveling speed.

3. The lane deviation warning system of claim 2, wherein the estimated deviation distance d is a distance measuring from a deviation reference point P up to a point positioned on the critical line wherein a line extending from the deviation reference point P in the direction of a traveling direction of the vehicle intersects with the critical line.

4. The lane deviation warning system of claim 3, wherein the deviation reference point P is set based on one of a left front wheel and a right front wheel of the vehicle.

5. The lane deviation warning system of claim 1, wherein the critical line is set within a predetermined distance with respect to the traveling lane and comprises a first critical line set inside the traveling lane and a second critical line set outside the traveling lane.

6. The lane deviation warning system of claim 5, wherein the controller controls to output a warning instruction for controlling the first warning means when the vehicle reaches the first critical line.

7. The lane deviation warning system of claim 5, wherein the critical line is set within a predetermined distance with respect to the traveling lane and comprises a second critical line set outside the traveling lane.

8. The lane deviation warning system of claim 7, wherein the controller controls to output a warning instruction for controlling the first warning means when the vehicle reaches the first critical line and to output a warning instruction for controlling the second warning means when the vehicle reaches the second critical line.

9. The lane deviation warning system of claim 1, wherein the first warning means is a haptic warning device, and the second warning means is a warning sound output device.

10. The lane deviation warning system of claim 9, wherein the first warning means performs haptic warning using at least one of an electrical safety belt and a steering actuator.