Vehicle driving support device and vehicle driving support method

• US 9,738,179 B2
• Filed: 05/27/2014
• Issued: 08/22/2017
• Est. Priority Date: 07/23/2013
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Ebina, Akihiko, Satou, Haruhiko
• Primary Examiner(s): Trivedi, Atul
• Application Number:
  US14/906,358
• Publication Number:
  US 20160159251A1
• Time in Patent Office: 1,183 Days
• Field of Search: 701 49
• CPC Class Codes: B60N 2/002 Seats provided with an occupancy detection means mounted therein or thereon detection means responsive to presence or absence of children B60N2/266
• CPC Class Codes: B60N 2/0022 for sensing anthropometric parameters, e.g. heart rate or body temperature
• CPC Class Codes: B60N 2/0025 by using weight measurement
• CPC Class Codes: B60N 2/0027 for detecting the position of the occupant or of occupant's body part
• CPC Class Codes: B60N 2/003 characterised by the sensor mounting location in or on the seat
• CPC Class Codes: B60N 2/02 the seat or part thereof being movable, e.g. adjustable adjustable arm-rests B60N2/75; adjustable head-rests B60N2/806
• CPC Class Codes: B60N 2/0244 with logic circuits
• CPC Class Codes: B60N 2/0248 with memory of positions
• CPC Class Codes: B60N 2/0273 taking into account user data, e.g. knee height or physical state
• CPC Class Codes: B60N 2/22 the back-rest being adjustable B60N2/2878 takes precedence
• CPC Class Codes: B60N 2210/40 Force or pressure sensors
• CPC Class Codes: B60W 50/082 Selecting or switching between different modes of propelling
• CPC Class Codes: B62D 1/183 adjustable between in-use and out-of-use positions, e.g. to improve access

Abstract

A vehicle travel controller carries out automatic travel control of controlling a vehicle to travel automatically based upon travel state information of the vehicle and information on an exterior of the vehicle. An automatic/manual traveling changeover switch is capable of switching between an automatic driving mode in which the automatic travel control is carried out by the vehicle travel controller and a manual driving mode in which the driver drives the vehicle manually. A driving posture controller controls a reclining motor so that the reclining angle of the driver'"'"'s seat in the automatic driving mode is larger than the reclining angle of the driver'"'"'s seat in the manual driving mode.

Claims

1. A vehicle driving support device, comprising:

a reclining angle adjustment unit capable of adjusting a reclining angle of a driver'"'"'s seat; and

a reclining angle controller configured to change the reclining angle by controlling the reclining angle adjustment unit depending on a driving mode, the driving mode being switchable between an automatic driving mode in which the vehicle steers autonomously and a manual driving mode in which a driver manually steers the vehicle,

wherein the reclining angle controller is configured to change the reclining angle, when the driving mode is switched between the automatic driving mode and the manual driving mode, so that the reclining angle in the automatic driving mode is larger than the reclining angle in the manual driving mode.

2. The vehicle driving support device according to claim 1, further comprising:

a body size estimation unit configured to estimate a driver'"'"'s body size; and

a manual driving posture setting unit configured to set a posture in which a driver'"'"'s pressing force against a steering wheel is equal to or larger than a certain value that enables stable steering that is determined by the driver'"'"'s body size estimated by the body size estimation unit, as a driving posture in accordance with the manual driving mode,

wherein the reclining angle controller is configured to control the reclining angle adjustment unit so that the driving posture of the driver in the manual driving mode is the posture set by the manual driving posture setting unit.

3. The vehicle driving support device according to claim 2, further comprising:

a physical feature estimation unit configured to estimate a personal physical feature of the driver; and

a manual driving posture correction unit configured to correct the driving posture in accordance with the manual driving mode set by the manual driving posture setting unit with the personal physical feature estimated by the physical feature estimation unit.

4. The vehicle driving support device according to claim 3, wherein the physical feature estimation unit is configured to estimate a physical flexibility of the driver as the personal physical feature of the driver, based on an action of the driver when the driver gets in or out of a vehicle.

5. The vehicle driving support device according to claim 2, further comprising a front-rear position adjustment unit capable of adjusting a seat bottom face of the driver'"'"'s seat in a front-rear direction of the vehicle,

wherein the reclining angle controller is configured to control the front-rear position adjustment unit in addition to the reclining angle adjustment unit, and

wherein the reclining angle controller, when detecting switching from the automatic driving mode to the manual driving mode, is configured to control the front-rear position adjustment unit so that a position of the seat bottom face of the driver'"'"'s seat in the front-rear direction of the vehicle becomes a position in which the driving posture of the driver becomes the posture set by the manual driving posture setting unit.

6. The vehicle driving support device according to claim 2, further comprising a steering adjustment unit capable of adjusting a position of a steering wheel in a front-rear direction and a top-bottom direction of the vehicle,

wherein the reclining angle controller is configured to control the steering adjustment unit in addition to the reclining angle adjustment unit, and

wherein the reclining angle controller, when detecting switching from the manual driving mode to the automatic driving mode, is configured to control the steering adjustment unit so that the position of the steering wheel in the front-rear direction and the top-bottom direction of the vehicle becomes the position in which the driving posture of the driver is the posture set by the manual driving posture setting unit.

7. The vehicle driving support device according to claim 1,

wherein in the automatic driving mode, an automatic travel control makes the vehicle travel automatically independent of a steering operation of the driver with a steering element,

further comprising a reliability degree detection unit configured to detect a reliability degree of the automatic travel control, based upon at least one of a number of sensing objects in the automatic travel control, a number of sensors necessary for sensing in the automatic travel control, a complexity of a sensing object in the automatic travel control, and an operation amount in the automatic travel control,

wherein the reclining angle controller is configured to control the reclining angle adjustment unit so that as the reliability degree detected by the reliability degree detection unit is lower in the automatic travel control, a driving posture of the driver is closer to a driving posture in accordance with the automatic driving mode from a driving posture in accordance with the manual driving mode.

8. A vehicle driving support method, comprising:

switching between an automatic driving mode in which the vehicle steers autonomously and a manual driving mode in which a driver manually steers the vehicle; and

changing a reclining angle of the driver'"'"'s seat, when the driving mode is switched between the automatic driving mode and the manual driving mode, so that the reclining angle of the driver'"'"'s seat in the automatic driving mode is larger than the reclining angle of the driver'"'"'s seat in a manual driving mode.