Surroundings modeling device for a driver assistance system for a motor vehicle

Patent metadata

Field	Value
Publication number	US-10752255-B2
Application number	US-201815969421-A
Country	US
Kind code	B2
Filing date	May 2, 2018
Priority date	Nov 3, 2015
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

A surroundings modeling device for a driver assistance system for a motor vehicle, includes a separating device configured to separate a total vehicle surroundings model into a static vehicle surroundings model based on a first look-ahead distance and a dynamic vehicle surroundings model based on a second look-ahead distance. A first real-time computing device is configured to calculate the dynamic vehicle surroundings model on the basis of the first look-ahead distance within a maximum response time. A second real-time computing device is configured to calculate the static vehicle surroundings model on the basis of the second look-ahead distance with a characteristic response time. A situation analysis device is configured to change the separation process on the basis of an analysis of the total vehicle surroundings model.

First claim

The invention claimed is:

1. A surroundings modeling device for a driver assistance system for a motor vehicle, comprising:
a separating device configured to separate a total vehicle surroundings model to be calculated into a static vehicle surroundings model based on a first look-ahead distance and a dynamic vehicle surroundings model based on a second look-ahead distance;
a first real-time computing device configured to calculate the dynamic vehicle surroundings model on the basis of the first look-ahead distance within a maximum response time;
a second real-time computing device configured to calculate the static vehicle surroundings model on the basis of the second look-ahead distance with a characteristic response time; and
a situation analysis device configured to change the separation process on the basis of an analysis of the total vehicle surroundings model.

2. The device according to claim 1 , wherein the situation analysis device is configured to change the separation process on the basis of a comparison of a predicted first response time of the first real-time computing device with a first threshold for the maximum response time and/or on the basis of a comparison of a predicted second response time of the second real-time computing device with a second threshold for the characteristic response time.

3. The device according to claim 1 , wherein the first real-time computing device comprises a plurality of control blocks and/or wherein the second real-time computing device comprises a plurality of control blocks.

4. The device according to claim 3 , wherein the plurality of the control blocks of the first real-time computing device comprises a chain and/or wherein the plurality of the control blocks of the second real-time computing device comprises a chain.

5. The device according to claim 1 , wherein the first real-time computing device is configured to calculate the dynamic vehicle surroundings model on the basis of the first look-ahead distance of up to 200 meters within a maximum response time of up to 10 seconds.

6. The device according to claim 1 , wherein the first real-time computing device is configured to output a calculated total surroundings model and/or a calculated trajectory planning on the basis of the dynamic vehicle surroundings model with a first calculation cycle of up to 5 seconds.

7. The device according to claim 1 , wherein the second real-time computing device is configured to output a calculated total surroundings model and/or a calculated trajectory planning on the basis of the static vehicle surroundings model with a second calculation cycle of up to 10 seconds and with a range of up to 1000 meters.

8. The device according to claim 1 ,
wherein the first real-time computing device is configured to calculate the dynamic vehicle surroundings model with a first integrity level, and
wherein the second real-time computing device is configured to calculate the static vehicle surroundings model with a second integrity level.

9. The device according to claim 8 , wherein the first integrity level is higher than the second integrity level.

10. A surroundings modeling method for a driver assistance system for a motor vehicle, wherein the method comprises:
separating a total vehicle surroundings model to be calculated into a static vehicle surroundings model based on a first look-ahead distance and a dynamic vehicle surroundings model based on a second look-ahead distance with the aid of a separating device;
calculating the dynamic vehicle surroundings model on the basis of the first look-ahead distance within a maximum response time with the aid of a first real-time computing device;
calculating the static vehicle surroundings model on the basis of the second look-ahead distance within a characteristic response time with the aid of a second real-time computing device; and
changing the separation process of the total vehicle surroundings model to be calculated on the basis of an analysis of the total vehicle surroundings model utilizing a situation analysis device.

Assignees

• Continental Teves Ag & Co Ohg

Inventors

• Grewe Ralph
• Schaack Steffen
• Lüke Stefan

Classifications

• B60W2554/4029

  Pedestrians · CPC title

• B60W2554/20

  Static objects · CPC title

• B60W2900/00

  Indexing codes relating to the purpose of, or problem solved of road vehicle drive control systems not otherwise provided for in groups B60W30/00 · CPC title

• B60W50/06 Primary

  Improving the dynamic response of the control system, e.g. improving the speed of regulation or avoiding hunting or overshoot · CPC title

• B60W2556/00

  Input parameters relating to data · CPC title