Adaptive cruise control system in vehicle and method thereof

• US 9,771,073 B2
• Filed: 06/02/2016
• Issued: 09/26/2017
• Est. Priority Date: 06/12/2015
• Status: Active Grant

• Current Assignee: HL Klemove Corporation
• Original Assignee: Mando Corporation
• Inventors: Kwon, Min-Su
• Primary Examiner(s): SOOFI, YAZAN A
• Application Number:
  US15/170,942
• Publication Number:
  US 20160362105A1
• Time in Patent Office: 481 Days
• Field of Search: 701408
• CPC Class Codes: B60W 2420/408 Radar; Laser, e.g. lidar
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2520/105 Longitudinal acceleration
• CPC Class Codes: B60W 2555/60 Traffic rules, e.g. speed limits or right of way
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 30/14 Adaptive cruise control
• CPC Class Codes: B60W 30/17 with provision for special action when the preceding vehicle comes to a halt, e.g. stop and go
• CPC Class Codes: B60W 50/0097 Predicting future conditions
• CPC Class Codes: B60W 50/14 Means for informing the driver, warning the driver or prompting a driver intervention
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: G01C 21/34 Route searching; Route guidance

Abstract

An ACC system and method for controlling a vehicle are disclosed. An adaptive cruise control (ACC) system includes: a radar sensor unit which detects an object around a vehicle and a movement detector which measures a driving speed and acceleration of the vehicle and a determination unit which determines a stopped object to be a stopped vehicle when the stopped object is detected in front of the vehicle and a surrounding vehicle detected around the vehicle is detected to decelerate on the basis of the measured driving speed and acceleration and a controller which regards the stopped vehicle as a preceding vehicle and performs deceleration control.

Claims

1. An adaptive cruise control (ACC) system, comprising:

a radar sensor unit which detects an object around a vehicle;

a movement detector which measures a driving speed and acceleration of the vehicle;

a determination unit which determines a stopped object to be a stopped vehicle when the stopped object is detected in front of the vehicle and a surrounding vehicle detected around the vehicle is expected to stop in a preset certain area; and

a controller which regards the stopped vehicle as a preceding vehicle and performs deceleration control.

2. The ACC system of claim 1, wherein the preset certain area represents a preset distance range from the stopped object.

3. The ACC system of claim 2, wherein when surrounding vehicles are detected running at a reduced speed around the vehicle at both a left and a right of the vehicle, the determination unit determines the stopped object to be the stopped vehicle.

4. The ACC system of claim 3, further comprising a navigation unit which receives a position of the vehicle and stores map information of the position, wherein when it is determined that the received position of the vehicle is in front of a traffic light or intersection, the determination unit determines the stopped object to be the stopped vehicle.

5. The ACC system of claim 4, wherein when the stopped object is determined to be an obstacle which is not the stopped vehicle, the controller performs warning and deceleration controls.

6. An ACC method, comprising:

detecting an object around a vehicle;

measuring a driving speed and acceleration of the vehicle;

determining a stopped object to be a stopped vehicle when the stopped object is detected in front of the vehicle, and a surrounding vehicle positioned around the vehicle is expected to stop in a preset certain area; and

performing a deceleration control by regarding the stopped vehicle as a preceding vehicle.

7. The ACC method of claim 6, wherein when the preset certain area represents a preset distance range from the stopped object.

8. The ACC method of claim 7, wherein when surrounding vehicles are detected around the vehicle at both a left and a right of the vehicle, the stopped object is determined to be the stopped vehicle.

9. The ACC method of claim 8, further comprising receiving a position of the vehicle, wherein when it is determined that the received position of the vehicle is in front of a traffic light or intersection, the stopped object is determined to be the stopped vehicle.

10. The ACC method of claim 9, wherein when the stopped object is determined to be an obstacle which is not the stopped vehicle, warning and deceleration controls are performed.