Driving evaluation system and driving evaluation method

• US 20100047744A1
• Filed: 07/13/2009
• Published: 02/25/2010
• Est. Priority Date: 08/21/2008
• Status: Active Grant

• Current Assignee: Aisin AW Company Limited (Aisin Corp.)
• Original Assignee: Aisin AW Company Limited (Aisin Corp.)
• Inventors: Miura, Naoki
• Granted Patent: US 8,573,978 B2
• Time in Patent Office: Days
• US Class Current: 434/66
• CPC Class Codes: B60W 2556/10 Historical data
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 40/09 Driving style or behaviour
• CPC Class Codes: G01C 21/3819 Road shape data, e.g. outline of a route
• CPC Class Codes: G01C 21/3844 Data obtained from position sensors only, e.g. from inertial navigation
• CPC Class Codes: G01C 21/3896 Transmission of map data from central databases
• CPC Class Codes: G06Q 10/047 Optimisation of routes or paths, e.g. travelling salesman problem
• CPC Class Codes: G07C 5/085 using electronic data carriers

Abstract

Systems, method, and programs evaluate a driving condition of a vehicle in accordance with road characteristic information that is included in map data, acquire evaluation information that includes an evaluation result based on the evaluation, and store the evaluation information. The systems, methods, and programs acquire update data to change the road characteristic information included in the map data, update the map data, and analyze the evaluation result for the evaluation information acquired during the period between the time when a road characteristic is modified and the time when the map data is updated, based on the changed road characteristic information included in the updated map data.

Claims

1. A driving evaluation system comprising:

an evaluation information acquisition unit that evaluates a driving condition of a vehicle in accordance with road characteristic information that is included in map data, and acquires evaluation information that includes an evaluation result based on the evaluation;

an evaluation information storage unit that stores the evaluation information;

a map updating unit that acquires update data to change the road characteristic information included in the map data, and updates the map data; and

an analysis unit that analyzes the evaluation result for the evaluation information acquired during the period between the time when a road characteristic is modified and the time when the map data is updated, based on the changed road characteristic information included in the updated map data.

2. The driving evaluation system according to claim 1, wherein

the evaluation information includes a position coordinate of a point for which the evaluation information is acquired, and

the analysis unit extracts the evaluation information for a point included in a region where the map data is updated based on the position coordinate, and analyzes the evaluation result of the extracted evaluation information.

3. The driving evaluation system according to claim 1, wherein

the evaluation information further includes an evaluation timestamp when the evaluation information is acquired, and

the analysis unit, based on the evaluation timestamp, extracts the evaluation information acquired during a predetermined period before the map data is updated, and analyzes the evaluation result of the extracted evaluation information.

4. The driving evaluation system according to claim 3, wherein

the update data includes a modification timestamp when the road characteristic is modified, and

the analysis unit, based on the modification timestamp and the evaluation timestamp, extracts the evaluation information acquired during the period between the time when the road characteristic is modified and the time when the map data is updated, and analyzes the evaluation result for the extracted evaluation information.

5. The driving evaluation system according to claim 3, wherein

the analysis unit, based on the evaluation timestamp, extracts the evaluation information acquired between a specified amount of time before any one of when the update data is generated, when the update data is acquired and when the map data is updated and the time when the map data is updated, and analyzes the evaluation result for the extracted evaluation information.

6. The driving evaluation system according to claim 1, wherein

the road characteristic is at least one of a road shape, a road class, and a traffic regulation for the road.

7. The driving evaluation system according to claim 1, wherein

the analysis unit comprises:

a determination unit that compares map data before an update with map data after an update to derive the changed road characteristic information, and determines whether the changed road characteristic information invalidates the evaluation result; and

a correction unit that corrects the evaluation information that includes an invalidated evaluation result when the determination unit determines that the changed road characteristic information invalidates the evaluation result.

8. The driving evaluation system according to claim 7, wherein

the evaluation information acquisition unit evaluates the driving condition of the vehicle for at least one of a parameter pertaining to safety and a parameter pertaining to an environmental impact, and

the determination unit determines whether the changed road characteristic information invalidates the evaluation result in accordance with criteria set depending on the parameter.

9. The driving evaluation system according to claim 8, wherein

the parameter pertaining to safety is at least one of speed limit compliance, stop compliance, and deceleration before a curve.

10. The driving evaluation system according to claim 7, wherein

the correction unit selectively corrects the evaluation information that includes the invalidated evaluation result by deleting the evaluation information including the invalidated evaluation result from the evaluation information storage unit.

11. The driving evaluation system according to claim 7, further comprising:

a driving history storage unit that stores the driving condition of the vehicle, wherein

the correction unit re-evaluates the driving condition based on the changed road characteristic information included in the updated map data, and sets the result of the re-evaluation as a corrected evaluation result.

12. The driving evaluation system according to claim 1, wherein

the driving condition of the vehicle is at least one of an accelerator operation amount, a brake operation amount, and a vehicle speed.

13. A driving evaluation method comprising:

evaluating a driving condition of a vehicle in accordance with road characteristic information that is included in map data;

acquiring evaluation information that includes an evaluation result based on the evaluation;

storing the evaluation information;

acquiring update data to change the road characteristic information included in the map data, and updating the map data; and

analyzing the evaluation result for the evaluation information acquired during the period between the time when a road characteristic is modified and the time when the map data is updated, based on the changed road characteristic information included in the updated map data.

14. A computer-readable medium that stores computer-executable instructions comprising:

evaluating a driving condition of a vehicle in accordance with road characteristic information that is included in map data;

acquiring evaluation information that includes an evaluation result based on the evaluation;

storing the evaluation information;

acquiring update data to change the road characteristic information included in the map data, and updating the map data; and

analyzing the evaluation result for the evaluation information acquired during the period between the time when road characteristic is modified and the time when the map data is updated, based on the changed road characteristic information included in the updated map data.