Driving assistance control device of vehicle

Patent metadata

Field	Value
Publication number	US-2022017089-A1
Application number	US-202117317193-A
Country	US
Kind code	A1
Filing date	May 11, 2021
Priority date	Jul 16, 2020
Publication date	Jan 20, 2022
Grant date	—

Abstract

A device according to the present disclosure is configured to, when it is determined that the road on which a vehicle travels is an uphill road and the speed of the vehicle is controlled such that the vehicle follows a preceding vehicle, in a case where the preceding vehicle is no longer detected, inhibit the acceleration of the vehicle or decelerate the vehicle until it is determined that the road on which the vehicle travels is no longer the uphill road, or alternatively, until a certain period of time elapses.

First claim

What is claimed is:

1 . A driving assistance control device of a vehicle, the driving assistance control device comprising:
a setting vehicle speed acquisition unit configured to acquire a setting vehicle speed set by a driver; a preceding vehicle detection unit configured to detect a preceding vehicle on a route of the vehicle; an uphill road determination unit configured to determine whether a road on which the vehicle travels is an uphill road; and a vehicle speed control unit configured to, when the preceding vehicle is not detected, control a speed of the vehicle such that the speed matches the setting vehicle speed, and when the preceding vehicle is detected, control the speed of the vehicle such that the vehicle follows the preceding vehicle, wherein the vehicle speed control unit is configured to, when it is determined that the road on which the vehicle travels is the uphill road and when controlling the speed of the vehicle such that the vehicle follows the preceding vehicle, in a case where the preceding vehicle is no longer detected, inhibit acceleration of the vehicle until it is determined that the road on which the vehicle travels is no longer the uphill road, or until a certain period of time elapses.

2 . The driving assistance control device according to claim 1 , wherein the vehicle speed control unit is configured to, when it is determined that the road on which the vehicle travels is the uphill road and when controlling the speed of the vehicle such that the vehicle follows the preceding vehicle, in a case where the preceding vehicle is no longer detected, decelerate the vehicle.

3 . The driving assistance control device according to claim 1 , wherein the vehicle speed control unit is configured to, when it is determined that the road on which the vehicle travels is the uphill road and when controlling the speed of the vehicle such that the vehicle follows the preceding vehicle, in a case where the preceding vehicle is no longer detected, inhibit the acceleration of the vehicle or decelerate the vehicle until it is determined that the road on which the vehicle travels is no longer the uphill road, or until the certain period of time elapses.

4 . The driving assistance control device according to claim 1 , further comprising:
an uphill peak detection unit configured to detect a peak of the uphill road when it is determined that the road on which the vehicle travels is the uphill road, wherein the vehicle speed control unit is configured to, when it is determined that the road on which the vehicle travels is the uphill road and when controlling the speed of the vehicle such that the vehicle follows the preceding vehicle, in a case where the preceding vehicle changes lanes and is no longer detected on the route of the vehicle and the peak of the uphill road is detected to be within a predetermined distance of the vehicle, inhibit the acceleration of the vehicle or decelerate the vehicle.

5 . The driving assistance control device according to claim 4 , wherein the vehicle speed control unit is configured to, when it is determined that the road on which the vehicle travels is the uphill road and when controlling the speed of the vehicle such that the vehicle follows the preceding vehicle, in a case where the preceding vehicle changes lanes and is no longer detected on the route of the vehicle and the peak of the uphill road is not detected to be within the predetermined distance of the vehicle, permit the acceleration of the vehicle.

6 . The driving assistance control device according to claim 1 , further comprising:
an uphill incline acquisition unit configured to acquire information on a degree of an incline of the uphill road, wherein the vehicle speed control unit is configured to, in a case where the vehicle is decelerated, when the uphill road has a steep incline, increase a magnitude of deceleration applied to the vehicle as compared with when the uphill road has a gentle incline.

Assignees

• Toyota Motor Co Ltd

Inventors

• Aikawa Hiroki

Classifications

• B60W30/16 Primary

  Control of distance between vehicles, e.g. keeping a distance to preceding vehicle · CPC title

• B60W2552/15

  Road slope, i.e. the inclination of a road segment in the longitudinal direction · CPC title

• B60W2554/4046

  Behavior, e.g. aggressive or erratic · CPC title

• B60W30/165

  Automatically following the path of a preceding lead vehicle, e.g. "electronic tow-bar" · CPC title

• B60W2556/50

  of positioning data, e.g. GPS [Global Positioning System] data · CPC title