Information System for Automotive, On-Vehicle Device and Server Device

• US 20130173084A1
• Filed: 12/28/2012
• Published: 07/04/2013
• Est. Priority Date: 12/29/2011
• Status: Active Grant

• Current Assignee: Clarion Co., Ltd. (Faurecia SA)
• Original Assignee: Clarion Co., Ltd. (Faurecia SA)
• Inventors: TAGAWA, Shinya, MUTOU, Keisuke, SUGIMOTO, Mika
• Granted Patent: US 9,645,969 B2
• Time in Patent Office: Days
• US Class Current: 701/1
• CPC Class Codes: G01C 21/3407 specially adapted for specific applications
• CPC Class Codes: G01C 21/3469 Fuel consumption; Energy use; Emission aspects
• 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
• CPC Class Codes: G07C 5/008 communicating information to a remotely located station transmission systems for measured values G08C
• CPC Class Codes: G07C 5/085 using electronic data carriers
• CPC Class Codes: G08G 1/0112 from the vehicle, e.g. floating car data [FCD]
• CPC Class Codes: G08G 1/0129 for creating historical data or processing based on historical data
• CPC Class Codes: G08G 1/096827 where the route is computed onboard
• CPC Class Codes: G08G 1/096844 where the complete route is dynamically recomputed based on new data
• CPC Class Codes: G08G 1/0969 having a display in the form of a map
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

An information system for automotive includes a plurality of on-vehicle devices each installed in a vehicle and a server device connected with the on-vehicle devices via a communication network. The plurality of on-vehicle devices each include an acceleration/deceleration change detection unit that detects an acceleration/deceleration change of the vehicle equipped with the on-vehicle device and a transmission unit that transmits acceleration/deceleration information pertaining to the detected acceleration/deceleration change. The server device includes a reception unit that receives the acceleration/deceleration information, a statistical parameter calculating unit that calculates statistical parameters to be used to estimate an extent of energy consumption or energy regeneration based upon the received acceleration/deceleration information, and an estimating unit for estimating the extent of energy consumption or energy regeneration based upon the calculated statistical parameters.

Claims

1. An information system for automotive, comprising:

a plurality of on-vehicle devices each installed in a vehicle; and

a server device connected with the on-vehicle devices via a communication network, wherein;

the plurality of on-vehicle devices each include;

an acceleration/deceleration change detection unit that detects an acceleration/deceleration change of the vehicle equipped with the on-vehicle device; and

a transmission unit that transmits acceleration/deceleration information pertaining to the acceleration/deceleration change detected by the acceleration/deceleration change detection unit; and

the server device includes;

a reception unit that receives the acceleration/deceleration information transmitted from each of the plurality of on-vehicle devices;

a statistical parameter calculating unit that calculates, based upon the acceleration/deceleration information received by the reception unit, statistical parameters to be used to estimate an extent of energy consumption or energy regeneration in correspondence to each link among links individually set in correspondence to specific road segments; and

an estimating unit that estimates, based upon the statistical parameters calculated for each link by the statistical parameter calculating unit, the extent of energy consumption or energy regeneration expected to occur at an estimation target vehicle as the estimation target vehicle travels on a planned travel route.

2. An information system for automotive according to claim 1, wherein:

the acceleration/deceleration change detection unit detects the acceleration/deceleration change when the vehicle has shifted from an accelerating state to a decelerating state or from a decelerating state to an accelerating state.

3. An information system for automotive according to claim 1, wherein:

the acceleration/deceleration change detection unit detects the acceleration/deceleration change when an extent of the acceleration/deceleration change is equal to or greater than a predetermined value.

4. An information system for automotive according to claim 1, wherein:

when, while taking a position of the vehicle at a time when the acceleration/deceleration change was most recently detected as an origin point, an actual cumulative traveling distance of the vehicle from the origin point satisfies a predetermined condition, the acceleration/deceleration change detection unit detects an equivalent point to be regarded as equivalent to the acceleration/deceleration change.

5. An information system for automotive according to claim 4, wherein:

the acceleration/deceleration change detection unit detects the equivalent point when a difference between a hypothetical cumulative traveling distance calculated by assuming that the vehicle, having departed the origin point, has continued to travel at a constant acceleration/deceleration rate and the actual cumulative traveling distance is equal to or greater than a predetermined value.

6. An information system for automotive according to claim 1, wherein:

the plurality of on-vehicle devices each further include a change ratio altering unit that alters, in correspondence to a number of times the acceleration/deceleration change detection unit has detected the acceleration/deceleration change during a predetermined length of time, a change ratio set in advance for the acceleration/deceleration in order to prohibit detection by the acceleration/deceleration change detection unit.

7. An information system for automotive according to claim 1, wherein:

the transmission unit transmits information indicating a speed or an acceleration/deceleration rate of the vehicle, a time point and a position of the vehicle, all measured when the acceleration/deceleration change detection unit detects the acceleration/deceleration change, to the server device as the acceleration/deceleration information.

8. An information system for automotive according to claim 1, wherein:

the statistical parameter calculating unit calculates, in correspondence to each link, the statistical parameters that include a statistical loss parameter corresponding to a loss segment, in which energy loss occurs in the vehicle traveling through the segment, and a statistical regeneration parameter corresponding to a regeneration segment, in which energy regeneration occurs in the vehicle traveling through the segment.

9. An information system for automotive according to claim 1, wherein:

the server device further includes;

an ascertaining unit that ascertains remaining energy available in the estimation target vehicle;

a current travel limit area specifying unit that defines a specific current travel limit area on a map for the estimation target vehicle based upon the remaining energy ascertained by the ascertaining unit and the extent of energy consumption or energy regeneration estimated for the estimation target vehicle by the estimating unit; and

a shape information output unit that outputs information pertaining to a shape of the current travel limit area defined by the current travel limit area specifying unit.

10. An on-vehicle device installed in a vehicle, comprising:

an acceleration/deceleration change detection unit that detects an acceleration/deceleration change of the vehicle; and

a transmission unit that transmits acceleration/deceleration information pertaining to the acceleration/deceleration change detected by the acceleration/deceleration change detection unit.

11. An on-vehicle device according to claim 10, wherein:

the acceleration/deceleration change detection unit detects the acceleration/deceleration change when the vehicle has shifted from an accelerating state to a decelerating state or from a decelerating state to an accelerating state.

12. An on-vehicle device according to claim 10, wherein:

the acceleration/deceleration change detection unit detects the acceleration/deceleration change when an extent of the acceleration/deceleration change is equal to or greater than a predetermined value.

13. An on-vehicle device according to claim 10, wherein:

when, while taking a position of the vehicle at a time when the acceleration/deceleration change was most recently detected as an origin point, an actual cumulative traveling distance of the vehicle from the origin point satisfies a predetermined condition, the acceleration/deceleration change detection unit detects an equivalent point to be regarded as equivalent to the acceleration/deceleration change.

14. An on-vehicle device according to claim 13, wherein:

the acceleration/deceleration change detection unit detects the equivalent point when a difference between a hypothetical cumulative traveling distance calculated by assuming that the vehicle, having departed the origin point, has continued to travel at a constant acceleration/deceleration rate and the actual cumulative traveling distance is equal to or greater than a predetermined value.

15. An on-vehicle device according to claim 10, further comprising:

a change ratio altering unit that alters, in correspondence to a number of times the acceleration/deceleration change detection unit has detected the acceleration/deceleration change during a predetermined length of time, a change ratio set in advance for the acceleration/deceleration in order to prohibit detection by the acceleration/deceleration change detection unit.

16. An on-vehicle device according to claim 10, wherein:

the transmission unit transmits information indicating a speed or an acceleration/deceleration rate of the vehicle, a time point and a position of the vehicle, all measured when the acceleration/deceleration change detection unit detects the acceleration/deceleration change, to the server device as the acceleration/deceleration information.

17. An on-vehicle device installed in a vehicle, comprising:

an acceleration/deceleration change detection unit that detects an acceleration/deceleration change of the vehicle;

a statistical parameter calculating unit that calculates, based upon history of acceleration/deceleration changes detected by the acceleration/deceleration change detection unit, statistical parameters to be used to estimate an extent of energy consumption or energy regeneration in correspondence to each link among the links individually set in correspondence to specific road segments; and

an estimating unit that estimates, based upon the statistical parameters calculated for each link by the statistical parameter calculating unit, the extent of energy consumption or energy regeneration expected to occur at the vehicle as the vehicle travels on a planned travel route.

18. A server device, comprising:

a reception unit that receives acceleration/deceleration information transmitted from each vehicle among a plurality of vehicles, pertaining to an acceleration/deceleration change of the vehicle;

a statistical parameter calculating unit that calculates, based upon the acceleration/deceleration information received by the reception unit, statistical parameters to be used to estimate an extent of energy consumption or energy regeneration in correspondence to each link among links individually set in correspondence to specific road segments; and

an estimating unit that estimates, based upon the statistical parameters calculated for each link by the statistical parameter calculating unit, the extent of energy consumption or energy regeneration expected to occur at an estimation target vehicle as the estimation target vehicle travels on a planned travel route.

19. A server device according to claim 18, wherein:

the statistical parameter calculating unit calculates, in correspondence to each link, the statistical parameters that include a statistical loss parameter corresponding to a loss segment, in which energy loss occurs in the vehicle traveling through the segment, and a statistical regeneration parameter corresponding to a regeneration segment, in which energy regeneration occurs in the vehicle traveling through the segment.

20. A server device according to claim 18, further comprising:

an ascertaining unit that ascertains remaining energy available in the estimation target vehicle;

a current travel limit area specifying unit that defines a specific current travel limit area on a map for the estimation target vehicle based upon the remaining energy ascertained by the ascertaining unit and the extent of energy consumption or energy regeneration estimated for the estimation target vehicle by the estimating unit; and

a shape information output unit that outputs information pertaining to a shape of the current travel limit area defined by the current travel limit area specifying unit.