Apparatus for controlling start-up of lane keeping assistance system and method of controlling the same

• US 9,676,413 B2
• Filed: 12/02/2015
• Issued: 06/13/2017
• Est. Priority Date: 12/02/2014
• Status: Active Grant

• Current Assignee: Hyundai Mobis Co., Ltd.
• Original Assignee: Hyundai Mobis Co., Ltd.
• Inventors: Choi, Kwang Il, Yang, Seung Han, Song, Dong Ho
• Primary Examiner(s): Marc, McDieunel
• Application Number:
  US14/956,570
• Publication Number:
  US 20160152266A1
• Time in Patent Office: 559 Days
• Field of Search: 701 41, 382104, 180422, 180446
• CPC Class Codes: B60T 2201/08 Lane monitoring; Lane Keeping Systems
• CPC Class Codes: B62D 15/025 Active steering aids, e.g. helping the driver by actively influencing the steering system after environment evaluation B62D1/28 takes precedence
• CPC Class Codes: G06V 20/588 Recognition of the road, e.g. of lane markings; Recognition of the vehicle driving pattern in relation to the road

Abstract

An apparatus for controlling start-up of a lane keeping assistance system (LKAS) which prevents lane departure of a first vehicle includes a detecting unit configured to detect a second vehicle which is traveling in a neighboring lane, a dividing line interposed between the first vehicle and the second vehicle, and a start-up controlling unit configured to determine a weighting factor based on a detection result of the detecting unit, change parameters which control a time point of the start-up of the LKAS based on the determined weighting factor, and control the time point of the start-up of the LKAS based on the changed parameters.

Claims

1. An apparatus for activating a lane keeping assistance system (LKAS) which prevents a lane departure of a first vehicle, the apparatus comprising:

a sensor and a processor coupled to the sensor, wherein the processor is configured with processor-executable instructions to perform operations comprising;

receiving a detection signal from the sensor;

detecting whether a second vehicle is traveling in a neighboring lane based on the received detection signal;

generating a dividing line interposed between the first vehicle and the second vehicle based on the detection of the second vehicle;

determining a weighting factor (α

) based on the dividing line; and

calculating a time to start-up the LKAS based on the weighting factor (α

).

2. The apparatus of claim 1, wherein the processor is further configured to perform operations comprising:

calculating a first offset value (ε

) which represents a distance from the first vehicle to the dividing line; and

calculating a time to lane crossing (TTLC), which represents an expected time required for the first vehicle to arrive at the dividing line, based on the first offset value (ε

) and the weighting factor (α

).

3. The apparatus of claim 2, wherein the processor is further configured to perform operations comprising:

multiplying the weighting factor (α

) and the first offset value (ε

) to determine a second offset value (ε

′

); and

replacing the first offset value (ε

) with the second offset value (ε

′

).

4. The apparatus of claim 2, wherein the processor is further configured to perform operations comprising:

calculating a first weighting factor (α

₁) when the second vehicle is not detected; and

calculating a second weighting factor (α

₂) which is smaller than the first weighting factor (α

₁) when the second vehicle is detected.

5. The apparatus of claim 4, wherein the second weighting factor (α

₂) is proportional to a distance from the first vehicle to the second vehicle.

6. The apparatus of claim 1, wherein the sensor is an ultrasonic sensor.

7. The apparatus of claim 1, wherein the sensor is a laser sensor.

8. A method for activating a lane keeping assistance system (LKAS) configured to be applied to a first vehicle, the method comprising:

receiving, by a processor of an apparatus, a detection signal from a sensor of the apparatus;

detecting, by the processor, whether a second vehicle is traveling in a neighboring lane based on the received detection signal;

generating, by the processor, a dividing line interposed between the first vehicle and the second vehicle based on the detection of the second vehicle;

determining a weighting factor (α

) based on the dividing line; and

calculating, by the processor, a time to start-up the LKAS based on the weighting factor (α

).

9. The method of claim 8, wherein calculating the time to start up the LKAS further comprises:

calculating, by the processor, a first offset value (ε

) which represents a distance from the first vehicle to the dividing line; and

calculating, by the processor, a time to lane crossing (TTLC), which represents an expected time for the first vehicle required to arrive at the dividing line, based on the first offset value (ε

) and the weighting factor (α

).

10. The method of claim 9, wherein calculating the time to start-up the LKAS further comprises:

multiplying, by the processor, the weighting factor (α

) and the first offset value (ε

) to determine a second offset value (ε

′

); and

replacing, by the processor, the first offset value (ε

) with the second offset value (ε

′

).

11. The method of claim 8, wherein determining the weighting factor (α

) further comprises;

calculating, by the processor, a first weighting factor (α

₁) when the second vehicle is not detected; and

calculating, by the processor, a second weighting factor (α

₂) which is smaller than the first weighting factor (α

₁) when the second vehicle is detected.

12. The method of claim 11, wherein the determining of the weighting factor (α

) further comprises;

determining, by the processor, that the second weighting factor (α

₂) is proportional to a distance from the first vehicle to the second vehicle.