Drive assist system and non-transitory computer-readable medium

• US 10,160,461 B2
• Filed: 12/07/2016
• Issued: 12/25/2018
• Est. Priority Date: 09/12/2014
• Status: Active Grant

• Current Assignee: Zenrin Company Limited (Zenrin)
• Original Assignee: Zenrin Company Limited (Zenrin)
• Inventors: Ohara, Hiroyuki, Masuoka, Takanori, Matsuo, Nobusuke
• Primary Examiner(s): Antonucci, Anne M
• Assistant Examiner(s): Stroud, James E
• Application Number:
  US15/371,686
• Publication Number:
  US 20170120928A1
• Time in Patent Office: 748 Days
• Field of Search: 701 70
• CPC Class Codes: B60W 2552/20 Road profile, i.e. the change in elevation or curvature of a plurality of continuous road segments
• CPC Class Codes: B60W 2552/30 Road curve radius
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 2720/10 Longitudinal speed
• CPC Class Codes: B60W 2720/106 Longitudinal acceleration
• CPC Class Codes: B60W 30/12 Lane keeping
• CPC Class Codes: B60W 30/143 Speed control B60W30/16 takes precedence
• CPC Class Codes: B60W 30/18009 related to particular drive situations
• CPC Class Codes: B60W 50/06 Improving the dynamic response of the control system, e.g. improving the speed of regulation or avoiding hunting or overshoot

Abstract

A drive assist system that includes circuitry that obtains information including at least one of acceleration/deceleration information and direction-of-travel information from a memory that stores at least one of the acceleration/deceleration information provided in relation to at least one of a set of a plurality of sections of a road and the direction-of-travel information provided in relation to at least one of the set of the plurality of sections of the road; obtains location information of a vehicle; and performs at least one of a acceleration/deceleration drive assist with regard to acceleration and/or deceleration of the vehicle based on the location information and the acceleration/deceleration information, and a direction drive assist with regard to a direction of travel of the vehicle based on the location information and the direction-of-travel information.

Claims

1. A drive assist system, comprising:

circuitry configured to;

obtain information including at least one of acceleration/deceleration information and direction-of-travel information from a memory that stores at least one of the acceleration/deceleration information provided in relation to at least one of a set of a plurality of sections of a road and the direction-of-travel information provided in relation to at least one of the set of the plurality of sections of the road, the acceleration/deceleration information including a plurality of different pieces of acceleration/deceleration information including first acceleration/deceleration information and second acceleration/deceleration information with regard to one identical section of the plurality of sections of the road, the direction-of-travel information including a plurality of different pieces of direction-of-travel information including first direction-of-travel information and second direction-of-travel information with regard to the one identical section of the plurality of sections of the road;

obtain location information of a vehicle; and

perform at least one of an acceleration/deceleration drive assist with regard to acceleration and/or deceleration of the vehicle based on the location information and the acceleration/deceleration information, and a direction drive assist with regard to a direction of travel of the vehicle based on the location information and the direction-of-travel information, wherein

the circuitry is configured to use at least one of the first acceleration/deceleration information and the first direction-of-travel information in response to the circuitry recognizing a current section of the road that is presently ahead of the vehicle in a current direction-of-travel of the vehicle is a section of the road that is in an expressway mainline, and

the circuitry is configured to use at least one of the second acceleration/deceleration information and the second direction-of-travel information in response to the circuitry recognizing the current section of the road that is presently ahead of the vehicle in the current direction-of-travel of the vehicle is a section of the road that is oriented toward an expressway exit.

2. The drive assist system according to claim 1,

wherein an end point of the at least one of the set of the plurality of the sections in the acceleration/deceleration information is determined based on a point at which an acceleration of the vehicle is to be changed on the road.

3. The drive assist system according to claim 1,

wherein the acceleration/deceleration information includes information indicating a direction of acceleration in the vehicle.

4. The drive assist system according to claim 1,

wherein the plurality of sections of the road for the acceleration/deceleration information and the plurality of sections of the road for the direction-of-travel information are the same.

5. The drive assist system according to claim 1,

wherein the memory is located in a server or the circuitry.

6. The drive assist system according to claim 1,

wherein the plurality of sections of the road relate at least one of the acceleration/deceleration information and the direction-of-travel information to features on the road including at least one of power poles, buildings, trees, traffic lights and signs.

7. The drive assist system according to claim 1,

wherein an end point of the at least one of the set of the plurality of the sections in the acceleration/deceleration information and/or the direction-of-travel information is different from an end point of a road section corresponding to a link in road network data for route search.

8. The drive assist system according to claim 1, wherein the circuitry is configured to:

calculate a route to a destination; and

obtain the information including at least one of the acceleration/deceleration information and the direction-of-travel information from the memory based on the route.

9. The drive assist system according to claim 1, wherein the circuitry is configured to:

obtain current location information of the vehicle;

calculate a route from the current location to a tentative destination around the current location; and

obtain the information including at least one of the acceleration/deceleration information and the direction-of-travel information from the memory based on the route.

10. The drive assist system according to claim 1, wherein the acceleration/deceleration information includes at least one of control level information and speed per hour information.

11. The drive assist system according to claim 1, wherein the circuitry is configured to identify whether the section of the road ahead of the vehicle in the current direction-of-travel of the vehicle is the road in the expressway mainline or the section of the road that is oriented toward an expressway exit based on operation information entered to the circuitry.

12. The drive assist system according to claim 1, wherein the circuitry is configured to identify whether the section of the road ahead of the vehicle in the current direction-of-travel of the vehicle is the road in the expressway mainline or the section of the road that is oriented toward an expressway exit based on route information toward a destination of the vehicle.

13. The drive assist system according to claim 1, wherein

the first acceleration/deceleration information indicates acceleration, and

the second acceleration/deceleration information indicates deceleration.

14. The drive assist system according to claim 1, wherein

the first direction-of-travel information indicates no control of direction, and

the second direction-of-travel information indicates turning to either left or right.

15. A drive assist system, comprising:

circuitry configured to;

obtain information including at least one of acceleration/deceleration information and direction-of-travel information from a memory that stores at least one of the acceleration/deceleration information provided in relation to at least one of a set of a plurality of sections of a road and the direction-of-travel information provided in relation to at least one of the set of the plurality of sections of the road, the acceleration/deceleration information including a plurality of different pieces of acceleration/deceleration information including first acceleration/deceleration information and second acceleration/deceleration information with regard to one identical section of the plurality of sections of the road, the direction-of-travel information including a plurality of different pieces of direction-of-travel information including first direction-of-travel information and second direction-of-travel information with regard to the one identical section of the plurality of sections of the road;

obtain location information of a vehicle; and

perform at least one of an acceleration/deceleration drive assist with regard to acceleration and/or deceleration of the vehicle based on the location information and the acceleration/deceleration information, and a direction drive assist with regard to a direction of travel of the vehicle based on the location information and the direction-of-travel information, wherein

the circuitry is configured to use at least one of the first acceleration/deceleration information and the first direction-of-travel information in response to the circuitry recognizing a current section of the road that is presently ahead of the vehicle in a current direction-of-travel of the vehicle is a section of the road that is in an expressway mainline,

the circuitry is configured to use at least one of the second acceleration/deceleration information and the second direction-of-travel information in response to the circuitry recognizing the current section of the road that is presently ahead of the vehicle in the current direction-of-travel of the vehicle is a section of the road that is oriented toward an expressway exit, and

the direction-of-travel information includes at least one of control level information, information regarding a radius of curve, information regarding an angle between a forward direction of the vehicle and the direction of travel of the vehicle, and information regarding angular velocity of rotation of a steering wheel of the vehicle.

16. The drive assist system according to claim 15,

wherein an end point of the at least one of the set of the plurality of the sections in the direction-of-travel information is determined based on a point at which a direction of the vehicle is to be changed on the road.

17. The drive assist system according to claim 15,

wherein the direction-of-travel information includes information indicating turning to right or turning to left relative to the direction of travel of the vehicle.

18. The drive assist system according to claim 15,

wherein the plurality of sections of the road for the acceleration/deceleration information and the plurality of sections of the road for the direction-of-travel information are the same.

19. The drive assist system according to claim 15,

wherein the memory is located in a server or the circuitry.

20. The drive assist system according to claim 15,

wherein the plurality of sections of the road relate at least one of the acceleration/deceleration information and the direction-of-travel information to features on the road including at least one of power poles, buildings, trees, traffic lights and signs.

21. The drive assist system according to claim 15,

wherein an end point of the at least one of the set of the plurality of the sections in the acceleration/deceleration information and/or the direction-of-travel information is different from an end point of a road section corresponding to a link in road network data for route search.

22. The drive assist system according to claim 15, wherein the circuitry is configured to:

calculate a route to a destination; and

obtain the information including at least one of the acceleration/deceleration information and the direction-of-travel information from the memory based on the route.

23. The drive assist system according to claim 15, wherein the circuitry is configured to:

obtain current location information of the vehicle;

calculate a route from the current location to a tentative destination around the current location; and

obtain the information including at least one of the acceleration/deceleration information and the direction-of-travel information from the memory based on the route.

24. A drive assist system, comprising:

circuitry configured to;

obtain information including at least one of acceleration/deceleration information and direction-of-travel information from a memory that stores at least one of the acceleration/deceleration information provided in relation to at least one of a set of a plurality of sections of a road and the direction-of-travel information provided in relation to at least one of the set of the plurality of sections of the road, the acceleration/deceleration information including a plurality of different pieces of acceleration/deceleration information including first acceleration/deceleration information and second acceleration/deceleration information with regard to one identical section of the plurality of sections of the road, the direction-of-travel information including a plurality of different pieces of direction-of-travel information including first direction-of-travel information and second direction-of-travel information with regard to the one identical section of the plurality of sections of the road;

obtain location information of a vehicle; and

perform at least one of an acceleration/deceleration drive assist with regard to acceleration and/or deceleration of the vehicle based on the location information and the acceleration/deceleration information, and a direction drive assist with regard to a direction of travel of the vehicle based on the location information and the direction-of-travel information, wherein

the circuitry is configured to use at least one of the first acceleration/deceleration information and the first direction-of-travel information in response to the circuitry recognizing a current section of the road that is presently ahead of the vehicle in a current direction-of-travel of the vehicle is a section of the road that is in an expressway mainline,

the circuitry is configured to use at least one of the second acceleration/deceleration information and the second direction-of-travel information in response to the circuitry recognizing the current section of the road that is presently ahead of the vehicle in the current direction-of-travel of the vehicle is a section of the road that is oriented toward an expressway exit, and

the memory stores a plurality of different types of the acceleration/deceleration information and/or a plurality of different types of the direction-of-travel information according to a type of the vehicle.

25. The drive assist system according to claim 24,

wherein a type of the acceleration/deceleration information is selected according to an engine displacement of the vehicle.

26. The drive assist system according to claim 24,

wherein a type of the direction-of-travel information is selected according to a degree of steering operation of the vehicle.