Link travel time calculation device and method for calculating link travel time interval

• US 20110029281A1
• Filed: 06/29/2010
• Published: 02/03/2011
• Est. Priority Date: 07/13/2009
• Status: Abandoned Application

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Teramoto, Eiji, Kitaoka, Hironobu, Tanahashi, Iwao, Lenoble, Mathieu, Tsukamoto, Akira, Mori, Hiroko
• Application Number:
  US12/801,873
• Publication Number:
  US 20110029281A1
• Time in Patent Office: Days
• US Class Current: 702/176
• CPC Class Codes: G01C 21/3492 employing speed data or traffic data, e.g. real-time or historical traffic control systems for road vehicles involving transmission of navigation instructions to the vehicle G08G1/0968
• CPC Class Codes: G08G 1/096811 where the route is computed offboard

Abstract

A link travel time calculation device includes: a collection element for collecting a travel position and a transit time in each vehicle; and a link travel time calculation element. The calculation element calculates a total travel time interval of all sections based on the travel position and the transit time in a predetermined time period. The calculation element calculates a first travel time interval of an upstream section and a second travel time interval of a downstream section based on the travel position and the transit time. The calculation element calculates a travel time interval of the object link with respect to the predetermined time period by subtracting a sum of the first travel time interval and the second travel time interval from the total travel time interval.

Claims

1. A link travel time calculation device comprising:

a collection element for collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles; and

a link travel time calculation element,

wherein the link travel time calculation element calculates a total travel time interval of all sections based on the travel position and the transit time, which are collected by the collection element in a predetermined time period,

wherein the all sections includes an object link, an upstream section disposed on an upstream side of the object link, and a downstream section disposed on a downstream side of the object link,

wherein the link travel time calculation element calculates a first travel time interval of the upstream section based on the travel position and the transit time,

wherein the link travel time calculation element calculates a second travel time interval of the downstream section based on the travel position and the transit time, and

wherein the link travel time calculation element calculates a travel time interval of the object link with respect to the predetermined time period by subtracting a sum of the first travel time interval and the second travel time interval from the total travel time interval.

2. The link travel time calculation device according to claim 1,

wherein each vehicle includes a GPS sensor and a wireless communication unit, and

wherein the collection element collects the travel position and the transmit time, which are transmitted from each vehicle and measured by the GPS sensor in each vehicle.

3. The link travel time calculation device according to claim 2,

wherein the collection element verifies the travel position measured in each vehicle with road map data, which is preliminary prepared, so that the collection element collects the travel position of each vehicle as a position of a road map.

4. A link travel time calculation device comprising:

a collection element for collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles; and

a link travel time calculation element,

wherein the link travel time calculation element calculates a third travel time interval of a link upstream section based on the travel position and the transit time, which are collected by the collection element in a predetermined time period,

wherein the link upstream section includes an object link and an upstream section disposed on an upstream side of the object link,

wherein the link travel time calculation element calculates a fourth travel time interval of a link downstream section based on the travel position and the transit time, which are collected by the collection element in the predetermined time period,

wherein the link downstream section includes the object link and a downstream section disposed on a downstream side of the object link,

wherein the link travel time calculation element calculates a total travel time interval of all sections based on the travel position and the transit time,

wherein the all sections include the object link, the upstream section and the downstream section, and

wherein the link travel time calculation element calculates a travel time interval of the object link with respect to the predetermined time period by subtracting the third travel time interval and the fourth travel time interval from the total travel time interval.

5. The link travel time calculation device according to claim 4,

wherein each vehicle includes a GPS sensor and a wireless communication unit, and

wherein the collection element collects the travel position and the transmit time, which are transmitted from each vehicle and measured by the GPS sensor in each vehicle.

6. The link travel time calculation device according to claim 5,

wherein the collection element verifies the travel position measured in each vehicle with road map data, which is preliminary prepared, so that the collection element collects the travel position of each vehicle as a position of a road map.

7. A link travel time calculation device comprising:

a collection element for collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles; and

a link travel time calculation element,

wherein the link travel time calculation element calculates a fifth travel time interval of a link downstream section based on the travel position and the transit time, which are collected by the collection element in a predetermined time period,

wherein the link downstream section includes an object link and a downstream section disposed on a downstream side of the object link,

wherein the link travel time calculation element calculates a sixth travel time interval of the downstream section based on the travel position and the transit time,

wherein the link travel time calculation element calculates a travel time interval of the object link with respect to the predetermined time period by subtracting the sixth travel time interval from the fifth travel time interval.

8. The link travel time calculation device according to claim 7,

wherein each vehicle includes a GPS sensor and a wireless communication unit, and

wherein the collection element collects the travel position and the transmit time, which are transmitted from each vehicle and measured by the GPS sensor in each vehicle.

9. The link travel time calculation device according to claim 8,

wherein the collection element verifies the travel position measured in each vehicle with road map data, which is preliminary prepared, so that the collection element collects the travel position of each vehicle as a position of a road map.

10. A link travel time calculation device comprising:

a collection element for collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles; and

a link travel time calculation element,

wherein the link travel time calculation element calculates a seventh travel time interval of a link upstream section based on the travel position and the transit time, which are collected by the collection element in a predetermined time period,

wherein the link upstream section includes an object link and an upstream section disposed on an upstream side of the object link,

wherein the link travel time calculation element calculates an eighth travel time interval of the upstream section based on the travel position and the transit time,

wherein the link travel time calculation element calculates a travel time interval of the object link with respect to the predetermined time period by subtracting the eighth travel time interval from the seventh travel time interval.

11. The link travel time calculation device according to claim 10,

wherein each vehicle includes a GPS sensor and a wireless communication unit, and

wherein the collection element collects the travel position and the transmit time, which are transmitted from each vehicle and measured by the GPS sensor in each vehicle.

12. The link travel time calculation device according to claim 11,

wherein the collection element verifies the travel position measured in each vehicle with road map data, which is preliminary prepared, so that the collection element collects the travel position of each vehicle as a position ea road map.

13. A link travel time calculation device comprising:

a collection element for collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles;

a calculation method selection element; and

a link travel time calculation element,

wherein the calculation method selection element selects one of a first calculation method, a second calculation method, a third calculation method and a fourth calculation method according to a current traffic situation of an object link and a past traffic situation of the object link,

wherein the link travel time calculation element calculates a travel time interval of the object link with respect to a predetermined time period according to the selected one of the first to fourth calculation methods,

wherein the first calculation method includes;

calculating a total travel time interval of all sections based on the travel position and the transit time, which are collected by the collection element in the predetermined time period, wherein the all sections includes the object link, an upstream section disposed on an upstream side of the object link, and a downstream section disposed on a downstream side of the object link;

calculating a first travel time interval of the upstream section based on the travel position and the transit time;

calculating a second travel time interval of the downstream section based on the travel position and the transit time, and

calculating a travel time interval of the object link with respect to the predetermined time period by subtracting a sum of the first travel time interval and the second travel time interval from the total travel time interval,

wherein the second calculation method includes;

calculating a third travel time interval of a link upstream section based on the travel position and the transit time, wherein the link upstream section includes the object link and the upstream section disposed on the upstream side of the object link;

calculating a fourth travel time interval of a link downstream section based on the travel position and the transit time, wherein the link downstream section includes the object link and the downstream section disposed on the downstream side of the object link;

calculating the total travel time interval of all sections based on the travel position and the transit time, wherein the all sections includes the object link, the upstream section and the downstream section; and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting the third travel time interval and the fourth travel time interval from the total travel time interval,

wherein the third calculation method includes;

calculating a fifth travel time interval of the link downstream section based on the travel position and the transit time;

wherein the link downstream section includes the object link and the downstream section disposed on the downstream side of the object link;

calculating a sixth travel time interval of the downstream section based on the travel position and the transit time; and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting the sixth travel time interval from the fifth travel time interval,

wherein the fourth calculation method includes;

calculating a seventh travel time interval of the link upstream section based on the travel position and the transit time, wherein the link upstream section includes the object link and the-upstream section disposed on the upstream side of the object link;

calculating an eighth travel time interval of the upstream section based on the travel position and the transit time; and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting the eighth travel time interval from the seventh travel time interval.

14. The link travel time calculation device according to claim 13,

wherein each vehicle includes a GPS sensor and a wireless communication unit, and

wherein the collection element collects the travel position and the transmit time, which are transmitted from each vehicle and measured by the GPS sensor in each vehicle.

15. The link travel time calculation device according to claim 14,

wherein the collection element verifies the travel position measured in each vehicle with road map data, which is preliminary prepared, so that the collection element collects the travel position of each vehicle as a position of a road map.

16. A method for calculating a travel time interval of an object link comprising:

collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles;

calculating a total travel time interval of all sections based on the travel position and the transit time, which are collected in a predetermined time period, wherein the all sections includes the object link, an upstream section disposed on an upstream side of the object link, and a downstream section disposed on a downstream side of the object link;

calculating a first travel time interval of the upstream section based on the travel position and the transit time;

calculating a second travel time interval of the downstream section based on the travel position and the transit time, and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting a sum of the first travel time interval and the second travel time interval from the total travel time interval.

17. A method for calculating a travel time interval of an object link comprising:

collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles;

calculating a third travel time interval of a link upstream section based on the travel position and the transit time, which are collected in a predetermined time period, wherein the link upstream section includes the object link and an upstream section disposed on an upstream side of the object link;

calculating a fourth travel time interval of a link downstream section based on the travel position and the transit time, wherein the link downstream section includes the object link and a downstream section disposed on a downstream side of the object link;

calculating a total travel time interval of all sections based on the travel position and the transit time, wherein the all sections includes the object link, the upstream section and the downstream section; and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting the third travel time interval and the fourth travel time interval from the total travel time interval.

18. A method for calculating a travel time interval of an object link comprising:

collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles;

calculating a fifth travel time interval of a link downstream section based on the travel position and the transit time, which are collected in a predetermined time period, wherein the link downstream section includes the object link and a downstream section disposed on a downstream side of the object link;

calculating a sixth travel time interval of the downstream section based on the travel position and the transit time; and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting the sixth travel time interval from the fifth travel time interval.

19. A method for calculating a travel time interval of an object link comprising:

collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles;

calculating a seventh travel time interval of a link upstream section based on the travel position and the transit time, which are collected in a predetermined time period, wherein the link upstream section includes the object link and an upstream section disposed on an upstream side of the object link;

calculating an eighth travel time interval of the upstream section based on the travel position and the transit time; and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting the eighth travel time interval from the seventh travel time interval.

20. A method for calculating a travel time interval of an object link comprising:

collecting a travel position and a transit time at the travel position in each vehicle, which are measured individually among a plurality of vehicles;

selecting one of a first calculation method, a second calculation method, a third calculation method and a fourth calculation method according to a current traffic situation of the object link and a past traffic situation of the object link; and

calculating the travel time interval of the object link with respect to a predetermined time period according to the selected one of the first to fourth calculation methods,

wherein the first calculation method includes;

calculating a total travel time interval of all sections based on the travel position and the transit time, which are collected by the collection element in the predetermined time period, wherein the all sections includes the object link, an upstream section disposed on an upstream side of the object link, and a downstream section disposed on a downstream side of the object link;

calculating a first travel time interval of the upstream section based on the travel position and the transit time;

calculating a second travel time interval of the downstream section based on the travel position and the transit time, and

calculating a travel time interval of the object link with respect to the predetermined time period by subtracting a sum of the first travel time interval and the second travel time interval from the total travel time interval,

wherein the second calculation method includes;

calculating a third travel time interval of a link upstream section based on the travel position and the transit time, wherein the link upstream section includes the object link and the upstream section disposed on the upstream side of the object link;

calculating a fourth travel time interval of a link downstream section based on the travel position and the transit time, wherein the link downstream section includes the object link and the downstream section disposed on the downstream side of the object link;

calculating the total travel time interval of all sections based on the travel position and the transit time, wherein the all sections includes the object link, the upstream section and the downstream section; and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting the third travel time interval and the fourth travel time interval from the total travel time interval,

wherein the third calculation method includes;

calculating a fifth travel time interval of the link downstream section based on the travel position and the transit time;

wherein the link downstream section includes the object link and the downstream section disposed on the downstream side of the object link;

calculating a sixth travel time interval of the downstream section based on the travel position and the transit time; and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting the sixth travel time interval from the fifth travel time interval,

wherein the fourth calculation method includes;

calculating a seventh travel time interval of the link upstream section based on the travel position and the transit time, wherein the link upstream section includes the object link and the upstream section disposed on the upstream side of the object link;

calculating an eighth travel time interval of the upstream section based on the travel position and the transit time; and

calculating the travel time interval of the object link with respect to the predetermined time period by subtracting the eighth travel time interval from the seventh travel time interval.