Method and system for generating map information for emergency surfaces

Patent metadata

Field	Value
Publication number	US-11176385-B2
Application number	US-201716316956-A
Country	US
Kind code	B2
Filing date	Jun 2, 2017
Priority date	Jul 11, 2016
Publication date	Nov 16, 2021
Grant date	Nov 16, 2021

Abstract

A system for generating map information for one or more road sections of a digital road map comprises an interface for receiving data records for the one or more road sections. The data records describe properties of surfaces outside the immediate road area. The system further comprises a first module for evaluating the received data records in order to identify first surfaces outside the immediate road area that are able to be driven on by a vehicle after leaving the road and on which the vehicle can be brought to a standstill after leaving the road, a second module for generating a description of the first surfaces in a format suitable for digital road maps, and a third module for retrievably providing the description of the first surfaces in one or more formats suitable for digital road maps.

First claim

The invention claimed is:

1. A system for generating and using map information for one or more road sections of a digital road map, comprising:
an interface for receiving data sets for the one or more road sections, wherein the data sets describe properties of areas outside the immediate road space,
a first module for evaluating the received data sets in order to identify first areas outside the immediate road space that are able to be driven on by a vehicle after leaving the road and on which the vehicle can be brought to a standstill after leaving the road,
a second module for generating a description of the first areas in a format suitable for digital road maps,
a third module to provide on demand the description of the first areas in one or more formats suitable for digital road maps,
wherein the system is adapted to receive a plurality of data sets for each road section, said plurality of data sets having been acquired or generated at different times, each data set comprising information of the time of the respective acquisition or generation, characterized in that the system is adapted to indicate, by using the information of the time, for the first areas, a probability with which they are available for a minimal risk maneuver at a given time and to infer a suitability for a minimal risk maneuver from different properties of the first areas at different times during a year, and wherein the vehicle uses the inferred suitability, in real time, while travelling on the road, to perform a minimal risk maneuver to bring the vehicle to a standstill at a safe location, wherein the vehicle is at least one of an autonomous vehicle and a highly automated vehicle.

2. The system as claimed in claim 1 , additionally comprising a fourth module for categorizing the first surfaces into different categories, wherein the categorization is effected on the basis of one or more of the criteria contained in the following list: a suitability of the first surface for different vehicle types, a condition of the top of the first surface, weather conditions for which the condition of the surface is valid, a probability and/or costs of damage to the surface that arises while the surface is being driven on.

3. The system as claimed in claim 1 , wherein the second module additionally complements the description of the first surfaces with information representing ranges of speeds and/or trajectories for which and/or in compliance with which it is possible to drive on the surface.

4. The system as claimed in claim 1 , wherein performing the minimal risk maneuver to bring the vehicle to a standstill at a safe location further comprises actuating at least one actuator of the vehicle.

5. A method for generating and using map information for one or more road sections of a digital road map, comprising:
receiving data records for the one or more road sections, wherein the data records describe properties of areas outside the immediate road space,
evaluating the received data records in order to identify first areas outside the immediate road space that are able to be driven on by a vehicle after leaving the road and on which the vehicle can be brought to a standstill after leaving the road,
generating a description of the first areas in a format suitable for digital road maps,
providing on demand the description of the first areas in one or more formats suitable for digital road maps,
wherein a plurality of data sets is received for each specific road section, said plurality of data sets having been acquired or generated at different times, each data set comprising information of the time of the respective acquisition or generation, characterized in that, by using the information of the time, for the first areas, a probability is indicated with which they are available at a given time for driving with a minimal risk maneuver and a suitability for a minimal risk maneuver is concluded from different properties of the first areas at different times during one year, and wherein the vehicle uses the inferred suitability, in real time, while travelling on the road, to perform a minimal risk maneuver to bring the vehicle to a standstill at a safe location, wherein the vehicle is at least one of an autonomous vehicle and a highly automated vehicle.

6. The method as claimed in claim 5 , additionally comprising:
categorizing the first areas into sub-areas of different categories, wherein the categorization is effected on the basis of one or more of the criteria contained in the following list: a suitability of the first surface for different vehicle types, a condition of the top of the first surface, weather conditions for which the condition of the surface is valid, a probability and/or costs of damage to the surface that arises while the surface is being driven on.

7. The method as claimed in claim 5 , additionally comprising:
supplementing the description of the first areas with information representing ranges of speeds and/or trajectories for which or in compliance with which it is possible to drive on the surface.

8. The method as claimed in claim 5 , additionally comprising:
receiving an enquiry regarding an availability of one or more first surfaces within a radius of a geo-position at a present time, and
sending information representing the availability of surfaces within the radius for a minimal risk maneuver, which information is extracted from a respective data record most recently received for the one or more first surfaces.

9. The method as claimed in claim 5 , wherein performing the minimal risk maneuver to bring the vehicle to a standstill at a safe location further comprises actuating at least one actuator of the vehicle.

10. A computer program product for generating and using map information for one or more road sections of a digital road map, which is stored on a non-transitory computer-readable medium and comprises program instructions that, when executed by a computer, cause performance of operations comprising:
receiving data records for the one or more road sections, wherein the data records describe properties of areas outside the immediate road space,
evaluating the received data records in order to identify first areas outside the immediate road space that are able to be driven on by a vehicle after leaving the road and on which the vehicle can be brought to a standstill after leaving the road,
generating a description of the first areas in a format suitable for digital road maps,
providing on demand the description of the first areas in one or more formats suitable for digital road maps,
wherein a plurality of data sets is received for each specific road section, said plurality of data sets having been acquired or generated at different times, each data set comprising information of the time of the respective acquisition or generation, characterized in that, by using the information of the time, for the first areas, a probability is indicated with which they are available at a given time for driving with a minimal risk maneuver and a suitability for a minimal risk maneuver is concluded from different properties of the first areas at different times during one year, and wherein the vehicle uses the inferred suitability, in real time, while travelling on the road, to perform a minimal risk maneuver to bring the vehicle to a standstill at a safe location, wherein the vehicle is at least one of an autonomous vehicle and a highly automated vehicle.

11. The computer program product as claimed in claim 10 , further comprising program instructions that, when executed by a computer, cause performance of operations comprising:
categorizing the first areas into sub-areas of different categories, wherein the catego

Assignees

• Continental Automotive Gmbh

Inventors

• Kristensen Steen
• Hamer Henning
• Grewe Ralph

Classifications

• B60W30/18009

  related to particular drive situations · CPC title

• B60W2552/00

  Input parameters relating to infrastructure · CPC title

• B60W2556/50

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

• B60W30/09

  Taking automatic action to avoid collision, e.g. braking and steering · CPC title

• G01C21/3815

  Road data · CPC title