Method and system for prompting an evasive maneuver of autonomous or semi-autonomous vehicles

Patent metadata

Field	Value
Publication number	US-12252147-B2
Application number	US-201816651141-A
Country	US
Kind code	B2
Filing date	Nov 6, 2018
Priority date	Nov 6, 2017
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

A method for prompting an evasive maneuver by at least one first autonomous or semi-autonomous vehicle. A vehicle state of the at least one first vehicle is ascertained by a control unit of the at least one first vehicle. Vehicles within a minimum distance are ascertained by the at least one first vehicle. The ascertained data of the at least one first vehicle are transmitted within the minimum distance to ascertained vehicles by the at least one first vehicle in order to prompt an adaptation of a trajectory and/or a speed of the ascertained vehicles. The at least one first vehicle being transferred into a safe state. A system is also provided.

First claim

What is claimed is:

1. A method for controlling an evasive maneuver by a first autonomous or semi-autonomous vehicle, the method comprising the following steps:
ascertaining, by a control unit of the first vehicle, a vehicle state of the first vehicle;
ascertaining, by the first vehicle, vehicles that are within a defined distance from the first vehicle;
transmitting, by the first vehicle, data of the first vehicle regarding the ascertained vehicle state to the ascertained vehicles that are within the defined distance, for prompting an adaptation of a trajectory and/or speed of the ascertained vehicles that are within the defined distance; and
transferring the first vehicle into a safe state;
wherein the method further comprises at least one of the following features (a)-(b):
(a) receiving a response from the ascertained vehicles, and implementing a delay of the transfer to wait for the reception of the response; and
(b) varying the defined distance for which the first vehicle performs the vehicle ascertainment, for the transmission of the data to the ascertained vehicles, depending on a speed of the first vehicle.

2. The method as recited in claim 1 , wherein the transmission is via a car-to-car communication.

3. The method as recited in claim 2 , wherein the transmission is performed cyclically.

4. The method as recited in claim 2 , wherein the transmission is performed in response to a determination, by the first vehicle, of presence of a defect of the first vehicle.

5. The method as recited in claim 4 , wherein the data includes an identification of a type of the defect of the first vehicle, a maximum time remaining until the initiation of the safe state, and a planned type of the safe state of the first vehicle.

6. The method as recited in claim 4 , wherein instances of material fatigue, and/or software errors, and/or hardware errors are detected by the control unit of the first vehicle as the defect of the first vehicle.

7. The method as recited in claim 4 , wherein the data are additionally transmitted to an external server unit.

8. The method as recited in claim 2 , wherein a value for the defined distance is varied depending on a signal strength of the car-to-car communication between the first vehicle and the ascertained vehicles.

9. The method as recited in claim 2 , wherein data are transmitted from the ascertained vehicles to the first vehicle.

10. The method as recited in claim 1 , wherein the method comprises the receiving of the response from the ascertained vehicles, the transfer being delayed to wait for the reception of the response.

11. The method as recited in claim 1 , wherein the method further comprises the varying of the defined distance for which the first vehicle performs the vehicle ascertainment, for the transmission of the data to the ascertained vehicles, depending on the speed of the first vehicle.

12. The method as recited in claim 11 , wherein the distance is decreased in response to an increase in the speed of the first vehicle.

13. The method as recited in claim 11 , wherein the distance defines a radius around the first vehicle.

14. A system, comprising:
a first vehicle including a control unit configured to ascertain a vehicle state of the first vehicle;
wherein:
the first vehicle is configured to:
ascertain vehicles that are within a defined distance from the first vehicle; and
transmit data of the first vehicle regarding the ascertained vehicle state, via a communication link, to the ascertained vehicles that are within the defined distance, for prompting an adaptation of a trajectory and/or a speed of the ascertained vehicles that are within the defined distance;

the control unit is configured to:
transfer the first vehicle into a safe state; and
perform at least one of the following features (a)-(b):
(a) receive a response from the ascertained vehicles, and implementing a delay of the transfer to wait for the reception of the response; and
(b) vary the defined distance for which the first vehicle performs the vehicle ascertainment, for the transmission of the data to the ascertained vehicles, depending on a speed of the first vehicle.

Assignees

• Bosch Gmbh Robert

Inventors

• Ewert Marlon Ramon

Classifications

• G07C5/0816

  Indicating performance data, e.g. occurrence of a malfunction · CPC title

• G07C5/008

  communicating information to a remotely located station (transmission systems for measured values G08C) · CPC title

• B60W2050/0292

  Fail-safe or redundant systems, e.g. limp-home or backup systems · CPC title

• B60W50/029 Primary

  Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts · CPC title

• B60W2554/802

  Longitudinal distance · CPC title