Navigation system with grade-separation detection mechanism and method of operation thereof

• US 9,194,711 B2
• Filed: 12/29/2011
• Issued: 11/24/2015
• Est. Priority Date: 12/29/2011
• Status: Active Grant

• Current Assignee: TeleNav Incorporated
• Original Assignee: TeleNav Incorporated
• Inventors: Lu, Wei
• Primary Examiner(s): Nguyen, John Q
• Assistant Examiner(s): ODEH, NADEEM N
• Application Number:
  US13/340,048
• Publication Number:
  US 20130173149A1
• Time in Patent Office: 1,426 Days
• Field of Search: 701/410, 701/424, 701/437, 701/553, 340/995.2
• US Class Current: 1/1
• CPC Class Codes: G01C 21/3626 Details of the output of route guidance instructions traffic control systems for road vehicles involving transmission of navigation instructions to the vehicle G08G1/0968
• CPC Class Codes: G01C 21/3841 Data obtained from two or more sources, e.g. probe vehicles

Abstract

A method of operation of a navigation system includes: identifying a device location; selecting a maneuver type with the device location; and determining a junction-type with the maneuver type for displaying on a device.

Claims

1. A method of operation of a navigation system including a device comprising:

identifying a traveled-path using a set of device locations for locating the device;

identifying a device-acceleration along the traveled-path along a horizontal plane for identifying the device-acceleration of the device along the horizontal plane relative to a ground surface of the traveled-path;

determining a maneuver type using the traveled-path and the device-acceleration along the horizontal plane for representing the maneuver type as a turn at a road-crossing; and

determining, using a control unit of the navigation system, a junction-type based on the maneuver type from the traveled-path and the device-acceleration for displaying on the device.

2. The method as claimed in claim 1 wherein determining the junction-type includes determining an intersection.

3. The method as claimed in claim 1 wherein determining the junction-type includes determining a grade-separation.

4. The method as claimed in claim 1 wherein determining the maneuver type includes identifying a maneuver-detail.

5. The method as claimed in claim 1 wherein determining the maneuver type includes identifying a current movement-rate.

6. A method of operation of a navigation system including a device comprising:

identifying a traveled-path using a set of device locations for locating the device;

identifying a device-acceleration along the traveled-path along a horizontal plane for identifying the device-acceleration of the device along the horizontal plane relative to a ground surface of the traveled-path;

determining a maneuver type using the traveled-path and the device-acceleration along the horizontal plane for representing the maneuver type as a turn at a road-crossing; and

determining, using a control unit of the navigation system, a junction-type as an intersection or a grade-separation based on the maneuver type meeting a crossing threshold, a floating threshold, or a combination thereof for displaying on the device, wherein determining the junction-type is based on the maneuver type from the traveled-path and the device-acceleration.

7. The method as claimed in claim 6 further comprising:

selecting a map including the road-crossing; and

wherein;

determining the junction-type includes determining the junction-type of the road-crossing on the map.

8. The method as claimed in claim 6 further comprising:

setting a junction region surrounding the road-crossing;

identifying a past speed-location profile within the junction region; and

wherein;

determining the junction-type includes determining the junction type of the road crossing using the past speed-location profile.

9. The method as claimed in claim 6 further comprising:

setting a junction region surrounding the road-crossing;

identifying a current movement-rate; and

wherein;

determining the maneuver type includes identifying the current movement-rate within the junction region.

10. The method as claimed in claim 6 further comprising:

identifying the road-crossing between a first road segment and a second road segment; and

wherein;

determining the junction-type includes determining the intersection when the traveled-path is along the first road segment and the second road segment.

11. A navigation system including a device comprising:

a control unit of the navigation system configured to;

identify a traveled-path using a set of device locations for locating the device;

identify a device-acceleration along the traveled-path along a horizontal plane for identifying the device-acceleration of the device along the horizontal plane relative to a ground surface of the traveled-path;

determine a maneuver type using the traveled-path and the device-acceleration along the horizontal plane for representing the maneuver type as a turn at a road-crossing;

determine a junction-type based on the maneuver type from the traveled-path and the device-acceleration for displaying on the device; and

a storage interface, coupled to the control unit, for storing the junction-type.

12. The system as claimed in claim 11 wherein the control unit is configured to determine an intersection in determining the junction-type.

13. The system as claimed in claim 11 wherein the control unit is configured to determine a grade-separation in determining the junction-type.

14. The system as claimed in claim 11 wherein the control unit is configured to identify a maneuver-detail in determining the maneuver type.

15. The system as claimed in claim 11 wherein the control unit is configured to identify a current movement-rate in determining the maneuver type.

16. The system as claimed in claim 11 wherein the control unit is configured to determine the junction-type as an intersection or a grade-separation when the maneuver type meets a crossing threshold, a floating threshold, or a combination thereof.

17. The system as claimed in claim 16 wherein the control unit is configured to:

select a map including the road-crossing; and

determine the junction-type of the road-crossing on the map.

18. The system as claimed in claim 16 wherein the control unit is configured to:

set a junction region surrounding the road-crossing;

identify a past speed-location profile within the junction region; and

determine the junction type of the road-crossing using the past speed-location profile.

19. The system as claimed in claim 16 wherein the control unit is configured to:

set a junction region surrounding the road-crossing;

identify a current movement-rate; and

identify the current movement-rate within the junction region in determining the maneuver type.

20. The system as claimed in claim 16 wherein the control unit is configured to:

identify the road-crossing between a first road segment and a second road segment; and

determine the intersection when the traveled path is along the first road segment and the second road segment.