Driver assistance system for the automated longitudinal guidance of a motor vehicle

Patent metadata

Field	Value
Publication number	US-12351174-B2
Application number	US-202118008567-A
Country	US
Kind code	B2
Filing date	Apr 26, 2021
Priority date	Jun 8, 2020
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A driver assistance system for automated longitudinal guidance of a motor vehicle configured to detect at least one turning opportunity for the motor vehicle, and to reduce the speed of the motor vehicle in accordance with the at least one detected turning opportunity.

First claim

The invention claimed is:

1. A driver assistance system for automated longitudinal guidance of a motor vehicle, the driver assistance system configured to:
detect at least one turning-off possibility for the motor vehicle in a partial region of a driving route lying in front of the motor vehicle in a direction of travel of the motor vehicle;
determine a location of a first end of the partial region dependent on a first predefined vehicle deceleration rate;
determine a location of a second end of the partial region dependent on a second predefined vehicle deceleration rate different from the first predefined vehicle deceleration rate; and
decrease a speed of the motor vehicle in a manner that is dependent on the at least one detected turning-off possibility.

2. The driver assistance system according to claim 1 , further configured to:
detect at least two turning-off possibilities for the motor vehicle; and
select one of the at least two turning-off possibilities for the motor vehicle as the at least one detected turning-off possibility.

3. The driver assistance system according to claim 2 , further configured to:
determine a road type for each of the at least two turning-off possibilities for the motor vehicle; and
select the one of the at least two turning-off possibilities dependent on the respective road types of the at least two turning-off possibilities.

4. The driver assistance system according to claim 3 , further configured to:
determine a value for the road type of each of the at least two turning-off possibilities for the motor vehicle; and
select the one of the at least two turning-off possibilities with the highest value for the road type.

5. The driver assistance system according to claim 1 , further configured to:
detect the turning-off request of the driver of the motor vehicle during operation of the motor vehicle with automated longitudinal guidance; and
reduce the speed of the motor vehicle in accordance with the detected turning-off request.

6. A method for the automated longitudinal guidance of a motor vehicle, the method comprising:
detecting of at least one turning-off possibility for the motor vehicle in a partial region of a driving route lying in front of the motor vehicle in a direction of travel of the motor vehicle;
determining a location of a first end of the partial region dependent on a first predefined vehicle deceleration rate;
determining a location of a second end of the partial region dependent on a second predefined vehicle deceleration rate different from the first predefined vehicle deceleration rate; and
decreasing a speed of the motor vehicle in a manner that is dependent on the at least one detected turning-off possibility.

7. The method according to claim 6 , further comprising:
detecting at least two turning-off possibilities for the motor vehicle; and
selecting one of the at least two turning-off possibilities for the motor vehicle as the at least one detected turning-off possibility.

8. The method according to claim 7 , further comprising:
determining a road type for each of the at least two turning-off possibilities for the motor vehicle; and
selecting the one of the at least two turning-off possibilities dependent on the respective road types of the at least two turning-off possibilities.

9. The method according to claim 8 , further comprising:
determining a value for the road type of each of the at least two turning-off possibilities for the motor vehicle; and
selecting the one of the at least two turning-off possibilities with the highest value for the road type.

10. The method according to claim 6 , further comprising:
detecting the turning-off request of the driver of the motor vehicle during operation of the motor vehicle with automated longitudinal guidance; and
reducing the speed of the motor vehicle in accordance with the detected turning-off request.

11. The method according to claim 6 , further comprising:
detecting a lane change request of the driver and detecting the turning-off request of the driver based on one or more activations of a direction of travel indicator by the driver; and
differentiating the lane change request from the turning-off request based at least on one of:
a present lane in which the motor vehicle is present being driven in,
a duration of time that the direction of travel indicator is activated by the driver,
a number of times that the direction of travel indicator is activated by the driver, and/or
a level of activation of the direction of travel indicator by the driver.

12. The method according to claim 6 , further comprising:
determining a lane in which the motor vehicle is presently being driven in from among a plurality of possible lanes in which the motor vehicle may be driven in; and
determining that the at least one turning-off possibility for the motor vehicle is permitted in the lane in which the motor vehicle is present being driven in.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Lechner Andreas
• Treml Stefan

Classifications

• B60W50/10

  Interpretation of driver requests or demands · CPC title

• B60W40/06

  Road conditions · CPC title

• B60W60/001

  Planning or execution of driving tasks · CPC title

• B60W2552/05

  Type of road, e.g. motorways, local streets, paved or unpaved roads · CPC title

• B60W30/18154

  Approaching an intersection · CPC title