POSITION INFORMATION CORRECTING DEVICE AND POSITION INFORMATION CORRECTING APPLICATION PROGRAM PRODUCT

• US 20170184407A1
• Filed: 01/21/2015
• Published: 06/29/2017
• Est. Priority Date: 02/11/2014
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: YAMASHIRO, Takahisa
• Granted Patent: US 9,897,453 B2
• Time in Patent Office: Days
• CPC Class Codes: G01C 21/28 with correlation of data from several navigational instruments
• CPC Class Codes: G01C 21/30 Map- or contour-matching
• CPC Class Codes: G01S 19/13 Receivers
• CPC Class Codes: G01S 19/51 Relative positioning
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: G09B 29/106 using electronic means
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/029 Location-based management or tracking services

Abstract

A position information correcting device includes a reception processing unit receiving position information transmitted from a nearby mobile object, a position correcting unit performing a position correcting process for correcting, based on map data, the position information of the nearby mobile object such that a corrected position of the nearby mobile object is on a running area of a road, a nearby mobile object type acquiring unit acquiring a mobile object type of the nearby mobile object, and a correction performance determining unit determining, based on the mobile object type acquired by the nearby mobile object type acquiring unit, whether the position correcting process needs to be performed to the position information of the nearby mobile object. The position correcting process is performed to the position information of the nearby mobile object only when the correction performance determining unit determines that the position correcting process needs to be performed.

Claims

1. A position information correcting device comprising:

a reception processing unit that receives position information transmitted from a nearby mobile object;

a position correcting unit that performs a position correcting process for correcting, based on map data, the position information of the nearby mobile object such that a corrected position of the nearby mobile object is on a running area of a road;

a nearby mobile object type acquiring unit that acquires a mobile object type of the nearby mobile object; and

a correction performance determining unit that determines whether the position correcting process needs to be performed to the position information of the nearby mobile object, wherein

the reception processing unit receives, from the nearby mobile object, mobile object type information which indicates the mobile object type of the nearby mobile object, and the nearby mobile object type acquiring unit acquires the mobile object type of the nearby mobile object from the mobile object type information received by the reception processing unit,

the nearby mobile object type acquiring unit includes a nearby mobile object type specifying unit that specifies the mobile object type of the nearby mobile object based on a moving speed of the nearby mobile object,

the correction performance determining unit compares the mobile object type of the nearby mobile object indicated by the mobile object type information received by the reception processing unit with the mobile object type of the nearby mobile object specified by the nearby mobile object type specifying unit, and determines whether the position correcting process needs to be performed based on a comparison result of the two mobile object types acquired by the nearby mobile object type acquiring unit,

the position correcting unit performs the position correcting process to the position information of the nearby mobile object when the correction performance determining unit determines that the position correcting process needs to be performed, and

the position correcting unit does not perform the position correcting process to the position information of the nearby mobile object when the correction performance determining unit determines that the position correcting process need not be performed.

4. The position information correcting device according to claim 1, wherein

the nearby mobile object type specifying unit determines that the mobile object type of the nearby mobile object is a vehicle when the moving speed of the nearby mobile object is equal to or higher than a first speed, and

the first speed is set to a predetermined value which enables a determination of the mobile object type as the vehicle.

5. The position information correcting device according to claim 4, wherein

the nearby mobile object type specifying unit determines that the mobile object type of the nearby mobile object is a pedestrian when the moving speed of the nearby mobile object is lower than a second speed, and

the second speed is set to a predetermined value which enables a determination of the mobile object type as the pedestrian.

6. The position information correcting device according to claim 1,

wherein the position correcting unit changes, corresponding to the mobile object type of the nearby mobile object, a map element which is to be set as the corrected position of the nearby mobile object.

7. The position information correcting device according to claim 6, wherein,

when the mobile object type of the nearby mobile object is a normal vehicle, the position correcting unit corrects the position information of the nearby mobile object such that the corrected position of the nearby mobile object is at a center portion of the road in a road width direction, and

when the mobile object type of the nearby mobile object is a construction vehicle, the position correcting unit corrects the position information of the nearby mobile object such that the corrected position of the nearby mobile object is at a side end portion of the road.

8. The position information correcting device according to claim 6,

wherein, when the mobile object type of the nearby mobile object is a pedestrian, the position correcting unit performs a pedestrian position correcting process for correcting the position information of the nearby mobile object such that the corrected position of the nearby mobile object is at the side end portion of the road or outside of the road.

9. The position information correcting device according to claim 8, wherein,

in the pedestrian position correcting process, the position correcting unit:

refers to the map data to acquire a closest road, which is a road closest to a mobile object position indicated by the position information of the nearby mobile object, and a pedestrian area closest to the mobile object position;

corrects the position information of the nearby mobile object such that the corrected position of the nearby mobile object is in the pedestrian area when a distance between the mobile object position and the pedestrian area is shorter than a distance between the mobile object position and the closest road; and

corrects the position information of the nearby mobile object such that the corrected position of the nearby mobile object is at the side end portion of the closest road which is closer to the nearby mobile object when the distance between the mobile object position and the pedestrian area is equal to or longer than the distance between the mobile object position and the closest road.

10. The position information correcting device according to claim 1, further comprising:

a host terminal position acquiring unit that acquires position information of a host terminal;

a host mobile object type acquiring unit that acquires a mobile object type of a mobile object for which the host terminal is used; and

a transmission processing unit that transmits the position information acquired by the host terminal position acquiring unit and mobile object type information indicating the mobile object type acquired by the host mobile object type acquiring unit.

2. (canceled)

3. (canceled)

11. A position information correcting application program product stored in a computer readable non-transitory tangible storage medium and comprising instructions to be executed by a computer, the instructions for implementing:

receiving position information transmitted from a nearby mobile object;

performing a position correcting process for correcting, based on map data, the position information of the nearby mobile object such that a corrected position of the nearby mobile object is on a running area of a road;

receiving mobile object type information from the nearby mobile object;

acquiring a mobile object type of the nearby mobile object indicated by the mobile object type information that is received;

specifying a mobile object type of the nearby mobile object based on a moving speed of the nearby mobile object;

comparing the mobile object type that is indicated by the mobile object type information with the mobile object type that is specified based on the moving speed of the nearby mobile object;

determining, based on a comparison result of the mobile object type that is indicated by the mobile object type information with the mobile object type that is specified based on the moving speed of the nearby mobile object, whether the position correcting process needs to be performed to the position information of the nearby mobile object;

performing the position correcting process to the position information of the nearby mobile object when determining that position correcting process needs to be performed; and

not performing the position correcting process to the position information of the nearby mobile object when determining that the position correcting process need not be performed.

12. A position information correcting device comprising:

a reception processing unit that receives position information transmitted from a nearby mobile object;

a position correcting unit that performs a position correcting process for correcting, based on map data, the position information of the nearby mobile object;

a nearby mobile object type acquiring unit that acquires a mobile object type of the nearby mobile object; and

a correction performance determining unit that determines, based on the mobile object type acquired by the nearby mobile object type acquiring unit, whether the position correcting process needs to be performed to the position information of the nearby mobile object, wherein

the position correcting unit changes, corresponding to the mobile object type of the nearby mobile object, a map element which is to be set as a corrected position of the nearby mobile object,

when the mobile object type of the nearby mobile object is a normal vehicle, the position correcting unit corrects the position information of the nearby mobile object such that the corrected position of the nearby mobile object is at a center portion of the road in a road width direction,

when the mobile object type of the nearby mobile object is a construction vehicle, the position correcting unit corrects the position information of the nearby mobile object such that the corrected position of the nearby mobile object is at a side end portion of the road,

the position correcting unit performs the position correcting process to the position information of the nearby mobile object when the correction performance determining unit determines that the position correcting process needs to be performed, and

the position correcting unit does not perform the position correcting process to the position information of the nearby mobile object when the correction performance determining unit determines that the position correcting process need not be performed.

13. The position information correcting device according to claim 12, wherein

the reception processing unit receives, from the nearby mobile object, mobile object type information which indicates the mobile object type of the nearby mobile object, and

the nearby mobile object type acquiring unit acquires the mobile object type of the nearby mobile object from the mobile object type information received by the reception processing unit.

14. The position information correcting device according to claim 12,

wherein the nearby mobile object type acquiring unit includes a nearby mobile object type specifying unit that specifies the mobile object type of the nearby mobile object based on a moving speed of the nearby mobile object.

15. The position information correcting device according to claim 14, wherein

the nearby mobile object type specifying unit determines that the mobile object type of the nearby mobile object is a vehicle when the moving speed of the nearby mobile object is equal to or higher than a first speed, and

the first speed is set to a predetermined value which enables a determination of the mobile object type as the vehicle.

16. The position information correcting device according to claim 15, wherein

the nearby mobile object type specifying unit determines that the mobile object type of the nearby mobile object is a pedestrian when the moving speed of the nearby mobile object is lower than a second speed, and

the second speed is set to a predetermined value which enables a determination of the mobile object type as the pedestrian.

17. The position information correcting device according to claim 12,

wherein, when the mobile object type of the nearby mobile object is a pedestrian, the position correcting unit performs a pedestrian position correcting process for correcting the position information of the nearby mobile object such that the corrected position of the nearby mobile object is at the side end portion of the road or outside of the road.

18. The position information correcting device according to claim 17, wherein,

in the pedestrian position correcting process, the position correcting unit:

refers to the map data to acquire a closest road, which is a road closest to a mobile object position indicated by the position information of the nearby mobile object, and a pedestrian area closest to the mobile object position;

corrects the position information of the nearby mobile object such that the corrected position of the nearby mobile object is in the pedestrian area when a distance between the mobile object position and the pedestrian area is shorter than a distance between the mobile object position and the closest road; and

corrects the position information of the nearby mobile object such that the corrected position of the nearby mobile object is at the side end portion of the closest road which is closer to the nearby mobile object when the distance between the mobile object position and the pedestrian area is equal to or longer than the distance between the mobile object position and the closest road.

19. The position information correcting device according to claim 12, further comprising:

a host terminal position acquiring unit that acquires position information of a host terminal;

a host mobile object type acquiring unit that acquires a mobile object type of a mobile object for which the host terminal is used; and

a transmission processing unit that transmits the position information acquired by the host terminal position acquiring unit and mobile object type information indicating the mobile object type acquired by the host mobile object type acquiring unit.