SECTION SETTING METHOD, MILEAGE INFORMATION GENERATION DEVICE, AND OPERATION ASSIST DEVICE

• US 20130173147A1
• Filed: 09/21/2011
• Published: 07/04/2013
• Est. Priority Date: 09/22/2010
• Status: Active Grant

• Current Assignee: DENSO Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: DENSO Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Takeuchi, Shojiro, Nakashima, Hiroki, Yoshioka, Satomi
• Granted Patent: US 8,897,999 B2
• Time in Patent Office: Days
• US Class Current: 701/123
• CPC Class Codes: G01C 21/3469 Fuel consumption; Energy use; Emission aspects
• CPC Class Codes: G01C 21/3811 Point data, e.g. Point of Interest [POI]
• CPC Class Codes: G06F 17/00 Digital computing or data processing equipment or methods, specially adapted for specific functions information retrieval, database structures or file system structures therefor G06F16/00

Abstract

A section setting method calculates information relating to an attainable actual fuel efficiency under a vehicle operation performed in consideration of fuel efficiency. To that end, the section setting method collects fuel-efficiency information that is information relating to the fuel efficiency required for a movement from a start point to a destination point of the vehicle, which is obtained under a plurality of kinds of vehicle operations, along with positional information of the vehicle at each time. The section setting method compares change pattern parts of the collected fuel-efficiency information with each other, thereby sequentially connecting the change pattern parts of the fuel-efficiency information from the start point to the destination point. The section setting method sets, as a section used to calculate the actual fuel efficiency, a section obtained by sectioning at points corresponding to the connection points of the change pattern parts connected.

Claims

1. A section setting method comprising:

collecting fuel efficiency information, which is information related to fuel efficiency of a vehicle that travels from a starting point to a destination point and is obtained under a plurality of types of vehicle operations together with location information of the vehicle at each time;

comparing change patterns in the collected fuel efficiency information for each of the location information;

connecting change pattern sections, which are parts of the change patterns, sequentially from the starting point to the destination point based on a result of the comparison; and

setting, as a section to be used for calculation of actual fuel efficiency, a section that is obtained by dividing a route at positions corresponding to connection points of the connected change pattern sections.

2. The section setting method according to claim 1, wherein

the connecting includes connecting change pattern sections, which are parts of the change patterns, sequentially from the starting point to the destination point based on the result of the comparison to optimize the fuel efficiency from the starting point to the destination point, and

the setting a section includes setting, as a section used for a calculation of the optimal fuel efficiency, a section that is obtained by dividing the route at positions corresponding to connection points of the connected change pattern sections.

3. The section setting method according to claim 1, wherein

the connecting includes connecting change pattern sections, which are parts of the change patterns, sequentially from the starting point to the destination point based on the result of the comparison to minimize the fuel efficiency from the starting point to the destination point, and

the setting a section includes setting, as a section to be used for a calculation of the minimum fuel efficiency, a section that is obtained by dividing the route at positions corresponding to connection points of the connected change pattern sections.

4. The section setting method according to claim 1, wherein

the collecting includes collecting the fuel efficiency information in fuel-efficiency-information-collecting sections, which are the minimum section units for collecting the fuel efficiency information, and

the comparing includes comparing the change pattern sections for each fuel-efficiency-information-collecting section.

5. The section setting method according to claim 1, the method further comprising:

setting a proximate range-determining value for determining whether a distance of a section that is obtained by dividing the route based on the connection points is within a proximate range of a section that is immediately before or after the section;

integrating the sections that are before and after the connection point into one section if the distance is less than or equal to the proximate range-determining value; and

fixing the sections that are before and after the connection point as separate sections if the section exceeds the proximate range-determining value.

6. The section setting method according to claim 5, wherein, in the setting of the determination value, the proximate range-determining value is variable in accordance with a traffic environment.

7. The section setting method according to claim 1, wherein

the collecting includes acquiring the fuel efficiency information of each vehicle, and

the setting of a section includes setting the section for each vehicle.

8. A fuel efficiency information generation device configured to generate fuel-efficiency-information, which is information related to a fuel efficiency of a vehicle that travels between a starting point and a destination point, wherein

the fuel-efficiency-information generation device is configured to search routes from the starting point to the destination point, and

the fuel-efficiency-information generation device is further configured to calculate an actual fuel efficiency for each of the searched routes based on information related to a fuel efficiency obtained by connecting change pattern sections of the fuel-efficiency information for each of sections that are set based on the section setting method according to claim 1.

9. The fuel-efficiency-information generation device according to claim 8, wherein the fuel-efficiency-information generation device is configured to calculate, as the actual fuel efficiency, optimal fuel-efficiency information that is information related to an optimal fuel efficiency obtained by connecting change pattern sections of the fuel-efficiency information to optimize the fuel efficiency from the starting point to the destination point, and calculate the optimal fuel efficiency for each of the searched routes based on the calculated optimal fuel-efficiency information.

10. The fuel-efficiency-information generation device according to claim 8, wherein the fuel-efficiency-information generation device is configured to calculate, as the actual fuel efficiency, minimum fuel-efficiency information that is information related to a minimum fuel efficiency obtained by connecting change pattern sections of the fuel-efficiency information to minimize the fuel efficiency from the starting point to the destination point, and calculate the minimum fuel efficiency for each of the searched routes based on the calculated minimum fuel-efficiency information.

11. The fuel-efficiency-information generation device according to claim 8, wherein

a plurality of vehicles that respectively include a radio communication function and travel in the same section are configured to transmit information to a control center of a probe information communication system,

the control center is configured to calculate the fuel-efficiency information based on the transmitted information, and

the fuel-efficiency-information generation device is configured to request the control center of the information related to the actual fuel efficiency.

12. A drive assist device that assists driving of a driver by providing fuel-efficiency information, which is information related to a fuel efficiency of a vehicle that travels between a starting point and a destination point, wherein

the drive assist device is configured to search routes from the starting point to the destination point, and

the drive assist device is further configured to provide information related to an actual fuel efficiency for each of the searched routes based on the information related to a fuel efficiency obtained by connecting change pattern sections of the fuel-efficiency information for each of sections that are set based on a section the setting method according to claim 1.

13. The drive assist device according to claim 12, wherein the drive assist device is configured to calculate, as the actual fuel efficiency, optimal fuel-efficiency information that is information related to an optimal fuel efficiency obtained by connecting change pattern sections of the fuel-efficiency information to optimize the fuel efficiency from the starting point to the destination point, and calculate the optimal fuel efficiency for each of the searched routes based on the calculated optimal fuel-efficiency information.

14. The drive assist device according to claim 12, wherein the drive assist device is configured to calculate, as the actual fuel efficiency, minimum fuel-efficiency information that is information related to a minimum fuel efficiency obtained by connecting change pattern sections of the fuel-efficiency information to minimize the fuel efficiency from the starting point to the destination point, and calculate the minimum fuel efficiency for each of the searched routes based on the calculated minimum fuel-efficiency information.

15. The drive assist device according to claim 12, wherein

the fuel-efficiency information includes vehicle operation information as information related to a vehicle operation that have been performed when the fuel-efficiency information is acquired, and

as one form of the drive assistance, the drive assist device is configured to provide the driver with the vehicle operation information included in the respective change pattern sections that configure the information related to the actual fuel efficiency to the driver.

16. The drive assist device according to claim 15, wherein the drive assist device is configured to generate the vehicle operation information to be provided to the driver based on comparing the vehicle operation information included in the respective change pattern sections that configure the information related to the actual fuel efficiency with information related to a vehicle operation of the device mounting vehicle for each of the searched route.

17. The drive assist device according to claim 12, further comprising a display device that displays the fuel-efficiency information, wherein the drive assist device is configured to cause the display device to display the information related to the actual fuel efficiency for each of the searched routes that have been searched from a current location to the destination point.

18. The drive assist device according to claim 12, further comprising a control center of a probe information communication system, wherein

the control center is configured to calculate the fuel-efficiency information based on information transmitted via radio communication from a plurality of vehicles travelling in the same section, and

the control center is configured to provide, in response to a request, the information related to the actual fuel efficiency among the calculated fuel-efficiency information.