MAP DATA PROCESSING DEVICE FOR VEHICLE

• US 20160259814A1
• Filed: 03/02/2016
• Published: 09/08/2016
• Est. Priority Date: 03/03/2015
• Status: Active Grant

• Current Assignee: Subaru Corp.
• Original Assignee: Fuji Heavy Industries Limited (Subaru Corp.)
• Inventors: MIZOGUCHI, Masato
• Granted Patent: US 9,990,375 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01C 21/3837 Data obtained from a single source
• CPC Class Codes: G06F 16/215 Improving data quality; Data cleansing, e.g. de-duplication, removing invalid entries or correcting typographical errors
• CPC Class Codes: G06F 16/2365 Ensuring data consistency and integrity
• CPC Class Codes: G06F 16/2379 Updates performed during online database operations; commit processing
• CPC Class Codes: G06F 16/29 Geographical information databases

Abstract

In a map data processing device for a vehicle, a map database has first map data of a road on which the vehicle travels. A map data computing module computes second map data of the road based on a surrounding environment and a traveling state of the vehicle. An update data computing module computes update data for updating the map database, based on a reliability of the second map data. An update determining module then compares the first map data with the update data. When both disagree with each other, the update determining module determines whether to update first map data with the update data, based on a frequency of discrepancy and the reliability. A data processing module executes a processing of updating the map database in accordance with a determination result by the update determining module.

Claims

1. A map data processing device for a vehicle, the map data processing device comprising:

a map database that has first map data of a road on which the vehicle travels;

a map data computing module that computes second map data of the road on the basis of a surrounding environment of the vehicle and a traveling state of the vehicle;

an update data computing module that computes update data for updating the map database, on the basis of a reliability of the second map data;

an update determining module that compares the first map data with the update data, and determines, when an error between the first map data and the update data is greater than or equal to a determination value, whether to update the first map data with the update data, on the basis of the reliability and a frequency of discrepancy in which the error is greater than or equal to the determination value; and

a data processing module that executes a processing of updating the map database in accordance with a determination result by the update determining module.

2. The map data processing device for a vehicle according to claim 1,

wherein the update data computing module weights pieces of the second map data with the reliability and performs an averaging processing on the weighted pieces of second map data to compute the update data.

3. The map data processing device for a vehicle according to claim 1,

wherein the update determining module computes a traveling frequency from data of a date when the vehicle travels on a road, and determines whether to update the map database, on the basis of a proportion of the frequency of discrepancy to the traveling frequency.

4. The map data processing device for a vehicle according to claim 1,

wherein the map database is stored in a storage medium that is managed by a server device outside of the vehicle, and

wherein the update data computing module averages data of all vehicles connected to the server device to compute the update data.

5. The map data processing device for a vehicle according to claim 2,

wherein the map database is stored in a storage medium that is managed by a server device outside of the vehicle, and

wherein the update data computing module averages data of all vehicles connected to the server device to compute the update data.

6. The map data processing device for a vehicle according to claim 3,

wherein the map database is stored in a storage medium that is managed by a server device outside of the vehicle, and

wherein the update data computing module averages data of all vehicles connected to the server device to compute the update data.

7. The map data processing device for a vehicle according to claim 1,

wherein the data processing module creates, at a predetermined interval, an interpolation point in an area the road information on which is not present in the map database.

8. The map data processing device for a vehicle according to claim 2,

wherein the data processing module creates, at a predetermined interval, an interpolation point in an area the road information on which is not present in the map database.

9. The map data processing device for a vehicle according to claim 3,

wherein the data processing module creates, at a predetermined interval, an interpolation point in an area the road information on which is not present in the map database.

10. The map data processing device for a vehicle according to claim 4,

wherein the data processing module creates, at a predetermined interval, an interpolation point in an area the road information on which is not present in the map database.

11. The map data processing device for a vehicle according to claim 5,

wherein the data processing module creates, at a predetermined interval, an interpolation point in an area the road information on which is not present in the map database.

12. The map data processing device for a vehicle according to claim 6,

wherein the data processing module creates, at a predetermined interval, an interpolation point in an area the road information on which is not present in the map database.