VEHICLE AUTONOMOUS TRAVELING SYSTEM, AND VEHICLE TRAVELING METHOD USING THE SAME

• US 20160138924A1
• Filed: 03/12/2015
• Published: 05/19/2016
• Est. Priority Date: 11/14/2014
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: AN, Kyoung Hwan
• Application Number:
  US14/656,172
• Publication Number:
  US 20160138924A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01C 21/34 Route searching; Route guidance

Abstract

Disclosed are a vehicle autonomous traveling system and a vehicle traveling method using the same. The vehicle autonomous traveling system includes a vehicle navigation device that plans a driver global path to a destination by acquiring a location of a vehicle, and guides a path in accordance with the planned driver global path, an autonomous traveling path providing unit that recognizes a road environment while planning a detailed global path by mapping a partial detailed path of a lane level based on the driver global path, determines a traveling condition based on the detailed global path and the recognized road environment, and outputs vehicle traveling information for controlling the vehicle, and an autonomous traveling operation unit that receives the vehicle traveling information, and performs autonomous traveling of the vehicle by following a path included in the vehicle traveling information.

Claims

1. A vehicle autonomous traveling system comprising:

a vehicle navigation device that plans a driver global path to a destination by acquiring a location of a vehicle, and guides a path in accordance with the planned driver global path;

an autonomous traveling path providing unit that recognizes a road environment while planning a detailed global path by mapping a partial detailed path of a lane level based on the driver global path, determines a traveling condition based on the detailed global path and the recognized road environment, and outputs vehicle traveling information for controlling the vehicle; and

an autonomous traveling operation unit that receives the vehicle traveling information, and performs autonomous traveling of the vehicle by following a path included in the vehicle traveling information.

2. The vehicle autonomous traveling system of claim 1, wherein the vehicle navigation device includes

a driver map database that stores a vehicle navigation map,

a vehicle location recognition unit that recognizes the location of the vehicle using a positioning system, and

a global path planning unit that plans the driver global path of the vehicle using location information recognized by the vehicle location recognition unit and the vehicle navigation map stored in the driver map database.

3. The vehicle autonomous traveling system of claim 1, wherein the autonomous traveling path providing unit includes

an autonomous traveling map database that stores a map of a lane level for a predetermined section,

a detailed global path planning unit that plans the detailed global path using the map stored in the autonomous traveling map database and the driver global path provided from the vehicle navigation device,

a vehicle location recognition unit that acquires the location of the vehicle and heading information of the vehicle,

an autonomous traveling environment recognition unit that recognizes the road environment for autonomous traveling, and

an autonomous traveling path planning unit that determines the traveling condition based on the detailed global path, the road environment, and location information of the vehicle, and outputs the vehicle traveling information.

4. The vehicle autonomous traveling system of claim 3, wherein, when an intersection exists on the driver global path, the autonomous traveling path providing unit searches for a lane-alternative path, and maps the searched lane-alternative path on the detailed global path.

5. The vehicle autonomous traveling system of claim 3, wherein the vehicle location recognition unit is implemented as a global positioning system (GPS)/inertial measurement unit (IMU) for acquiring highly accurate location information.

6. The vehicle autonomous traveling system of claim 1, wherein the vehicle navigation device and the autonomous traveling path providing unit communicate with each other via a network within the vehicle.

7. A vehicle traveling method using a vehicle autonomous traveling system, comprising:

loading a planned detailed global path;

acquiring a location of a vehicle to perform map matching on the acquired location;

determining whether the vehicle arrives at a destination, and determining whether a partial detailed path exists up to a location ahead by a predetermined distance on the detailed global path when it is determined that the vehicle does not arrive at the destination;

performing autonomous traveling or performing map matching on the acquired location by determining whether the vehicle is in an autonomous traveling state when it is determined that the partial detailed path exists; and

performing emergency autonomous traveling or performing map matching on the acquired location by determining whether the vehicle is in the autonomous traveling state when it is determined that the partial detailed path does not exist.

8. The vehicle traveling method of claim 7, wherein the performing of autonomous traveling or the performing of the map matching includes

performing autonomous traveling when it is determined that the vehicle is in the autonomous traveling state in a case in which the partial detailed path is determined to exist, and

performing map matching on the acquired location when it is determined that the vehicle is not in the autonomous traveling state.

9. The vehicle traveling method of claim 7, wherein the performing of the map matching includes performing map matching on the acquired position when it is determined that the vehicle is not in the autonomous traveling state.

10. The vehicle traveling method of claim 7, wherein the performing of the map matching includes

requesting driver traveling when it is determined that the vehicle is in the autonomous traveling state, and

determining whether the driver traveling is performed.

11. The vehicle traveling method of claim 10, wherein the determining of whether the driver traveling is performed includes

performing map matching on the acquired location when it is determined that the driver traveling is performed, and

performing emergency autonomous traveling when it is determined that the driver traveling is not performed.

12. The vehicle traveling method of claim 8, wherein the performing of autonomous traveling or the performing of the map matching includes

determining whether a current link is a link before the vehicle enters an intersection when it is determined that the vehicle is in the autonomous traveling state,

performing autonomous traveling when it is determined that the current link is not the link before the vehicle enters the intersection, and

determining whether detailed global path following is successfully performed when it is determined that the current link is the link before the vehicle enters the intersection.

13. The vehicle traveling method of claim 12, wherein the determining of whether the detailed global path following is successfully performed includes

performing autonomous traveling when it is determined that the detailed global path following is successfully performed, and

resetting the corresponding path to an alternative path when it is determined that the detailed global path following is not successfully performed, and performing autonomous traveling.

14. The vehicle traveling method of claim 7, wherein the loading of the planned detailed global path includes

designating the destination using a vehicle navigation device,

searching for a driver global path based on a driver map database in which a vehicle navigation map is stored, and

planning for the detailed global path by mapping the partial detailed path on the driver global path.

15. The vehicle traveling method of claim 14, wherein, after the mapping of the partial detailed path on the driver global path, the loading of the planned detailed global path further includes

searching for an intersection-alternative path by determining whether an intersection exists on the driver global path, and

searching for the detailed global path by mapping the intersection-alternative path on the detailed global path.

16. The vehicle traveling method of claim 14, wherein the planning of the detailed global path by mapping the partial detailed path on the driver global path includes

determining whether a next link of the driver global path exists,

acquiring the next link when it is determined that the next link of the driver global path exists, and determining whether a partial detailed path for the next link exists, and

adding a partial detailed path link to a map set for calculating the detailed global path when it is determined that the partial detailed path for the next link exists, and searching for the detailed global path based on the map set for calculating the detailed global path when it is determined that the partial detailed path for the next link does not exist.

17. The vehicle traveling method of claim 16, wherein the searching for of the detailed global path based on the map set includes

acquiring the map set for calculating the detailed global path,

searching for the partial detailed path using the map set for calculating the detailed global path, and

searching for the detailed global path by mapping the partial detailed path on the driver global path.

18. The vehicle traveling method of claim 16, wherein, after the adding of the partial detailed path link to the map set for calculating the detailed global path, the planning of the detailed global path by mapping the partial detailed path on the driver global path further includes

determining whether the next link of the driver global path exists, and

acquiring the next link when it is determined that the next link of the driver global path exists.

19. The vehicle traveling method of claim 18, wherein the planning of the detailed global path by mapping the partial detailed path on the driver global path further includes

determining whether the next link of the driver global path exists, and

searching for the detailed global path based on the map set for calculating the detailed global path when it is determined that the next link of the driver global path does not exist.

20. The vehicle traveling method of claim 15, wherein the searching for of the detailed global path by mapping the intersection-alternative path on the detailed global path includes

determining whether a link connected to a next intersection exists in the driver global path,

acquiring the link connected to the next intersection when it is determined that the link connected to the next intersection exists in the driver global path,

searching for an alternative path of the driver global path by searching for a path until the vehicle meets an existing path using the acquired link as a departure point,

searching for the partial detailed path using the searched alternative path, and

searching for the detailed global path by mapping the searched partial detailed path on the driver global path.