APPARATUS AND METHOD FOR CONTROLLING AUTOMATIC PARKING

• US 20150025732A1
• Filed: 06/30/2014
• Published: 01/22/2015
• Est. Priority Date: 07/17/2013
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: MIN, Kyoungwook, CHOI, Jeongdan
• Application Number:
  US14/320,387
• Publication Number:
  US 20150025732A1
• Time in Patent Office: Days
• US Class Current: 701/23
• CPC Class Codes: B62D 15/0285 Parking performed automatically

Abstract

An automatic parking control apparatus and method are disclosed. The automatic parking control apparatus includes a selection unit, a processing unit, and a control unit. The selection unit selects a parking slot within a parking map received through a parking map reception unit. The processing unit computes a base point at which a vehicle is parallel to both sides of the selected parking slot when the vehicle enters the selected parking slot and a destination point at which automatic parking is completed, computes a start point and a cross point based on the base point, and establishes an automatic parking path including a plurality of sublines using the start point, the cross point, the base point and the destination point. The control unit controls the automatic parking so that the vehicle is parked along the automatic parking path.

Claims

1. An automatic parking control apparatus, comprising:

a selection unit configured to select a parking slot within a parking map received through a parking map reception unit;

a processing unit configured to compute a base point at which a vehicle is parallel to both sides of the selected parking slot when the vehicle enters the selected parking slot and a destination point at which automatic parking is completed, to compute a start point and a cross point based on the base point, and to establish an automatic parking path including a plurality of sublines using the start point, the cross point, the base point and the destination point; and

a control unit configured to control the automatic parking so that the vehicle is parked along the automatic parking path.

2. The automatic parking control apparatus of claim 1, wherein the processing unit computes a first minimum radius circle based on a maximum steering angle of the vehicle at the base point.

3. The automatic parking control apparatus of claim 2, wherein the processing unit further computes a second minimum radius circle that is parallel to tops of the parking slots, comes into contact with a drive line, that is, an entry line of the vehicle, and the first minimum radius circle, and is formed based on the maximum steering angle of the vehicle.

4. The automatic parking control apparatus of claim 3, wherein:

the start point is a point at which the drive line comes into contact with the second minimum radius circle; and

the cross point is a point at which the first minimum radius circle comes into contact with the second minimum radius circle.

5. The automatic parking control apparatus of claim 4, wherein the control unit starts the automatic parking at a point within a predetermined threshold from the start point.

6. The automatic parking control apparatus of claim 5, wherein the control unit permits the vehicle to move to a subsequent subline if a distance between a last point of one subline and a stop point of the vehicle is equal to or shorter than the predetermined threshold during the automatic parking of the vehicle along to the subline.

7. The automatic parking control apparatus of claim 6, wherein the control unit corrects the second minimum radius circle into a second corrected circle that is vertical to a heading angle of the vehicle and comes into contact with the first minimum radius circle if, when the vehicle is stopped, a distance between the start point and the stop point of the vehicle exceeds zero and is equal to or shorter than the predetermined threshold, and then moves the vehicle from the stop point to a corrected cross point that comes into contact with the second corrected circle and the first minimum radius circle.

8. The automatic parking control apparatus of claim 7, wherein the control unit corrects the first minimum radius circle into a first corrected circle that is vertical to the heading angle of the vehicle, comes into contact with the second corrected circle, and comes into contact with a base line that connects the base point and the destination point if, when the vehicle is stopped, an error in a distance between the corrected cross point and the stop point of the vehicle exceeds zero and is equal to or shorter than the predetermined threshold, and then moves the vehicle from the stop point to a corrected base point that comes into contact with the first corrected circle and the base line.

9. The automatic parking control apparatus of claim 1, wherein the control unit corrects a mechanical error steering angle of the vehicle using a steering error table stored in a parking map storage unit.

10. An automatic parking control method, comprising:

selecting, by a selection unit, a parking slot within a parking map received through a parking map reception unit;

computing, by a processing unit, a base point at which a vehicle is parallel to both sides of the selected parking slot when the vehicle enters the selected parking slot and a destination point at which automatic parking is completed;

computing, by the processing unit, a start point and a cross point based on the base point;

establishing, by the processing unit, an automatic parking path including a plurality of sublines using the start point, the cross point, the base point and the destination point; and

controlling, by a control unit, the automatic parking so that the vehicle is parked along the automatic parking path.

11. The automatic parking control method of claim 10, wherein computing the start point and the cross point comprises computing a first minimum radius circle based on a maximum steering angle of the vehicle at the base point.

12. The automatic parking control method of claim 11, wherein computing the start point and the cross point comprises further computing a second minimum radius circle that is parallel to tops of the parking slots, comes into contact with a drive line, that is, an entry line of the vehicle, and the first minimum radius circle, and is formed based on the maximum steering angle of the vehicle.

13. The automatic parking control method of claim 12, wherein:

the start point is a point at which the drive line comes into contact with the second minimum radius circle; and

the cross point is a point at which the first minimum radius circle comes into contact with the second minimum radius circle.

14. The automatic parking control method of claim 13, wherein controlling the automatic parking comprises starting the automatic parking at a point within a predetermined threshold from the start point.

15. The automatic parking control method of claim 14, wherein controlling the automatic parking comprises permitting the vehicle to move to a subsequent subline when a distance between a last point of one subline and a stop point of the vehicle is equal to or shorter than the predetermined threshold during the automatic parking of the vehicle along the one subline.

16. The automatic parking control method of claim 15, wherein controlling the automatic parking comprises correcting the second minimum radius circle into a second corrected circle that is vertical to a heading angle of the vehicle and comes into contact with the first minimum radius circle if, when the vehicle is stopped, a distance between the start point and the stop point of the vehicle exceeds zero and is equal to or shorter than the predetermined threshold, and then moving the vehicle from the stop point to a corrected cross point that comes into contact with the second corrected circle and the first minimum radius circle.

17. The automatic parking control method of claim 16, wherein controlling the automatic parking comprises correcting the first minimum radius circle into a first corrected circle that is vertical to the heading angle of the vehicle, comes into contact with the second corrected circle, and comes into contact with a base line that connects the base point and the destination point if, when the vehicle is stopped, an error in a distance between the corrected cross point and the stop point of the vehicle exceeds zero and is equal to or shorter than the predetermined threshold, and then moving the vehicle from the stop point to a corrected base point that comes into contact with the first corrected circle and the base line.

18. The automatic parking control method of claim 10, wherein controlling the automatic parking comprises correcting a mechanical error steering angle of the vehicle using a steering error table stored in a parking map storage unit.