Vehicle Landmark Referencing for Automatic Control Accuracy
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Solution Overview
Problem
Automatic or partially automatic vehicle control systems rely on high-definition maps that become outdated when surroundings change, leading to errors due to different map materials and limited information exchange between vehicles.
Innovation Solution
Determine the relative position of an object in relation to a landmark using a vehicle's environment sensor system, generating an information signal based on this position, which is transmitted to other vehicles to enhance vehicle control accuracy, independent of satellite positioning and map deviations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-definition maps are used for automatic vehicle control, then vehicle control accuracy is improved, but map outdated errors occur when surroundings change
Solution Approach 1:
The patent implements feedback by having vehicles continuously measure landmarks and report their actual positions. This measured landmark position information is fed back to update map data, creating a closed-loop system that corrects map outdated errors in real-time, thereby maintaining both control accuracy and reliability
Solution Approach 2:
The patent changes the parameter of landmark position from static map data to dynamic measured values. By using actually measured landmark positions instead of relying solely on pre-stored map coordinates, the system adapts to environmental changes and eliminates map outdated errors while preserving control precision
2Loss of information
If different map systems are used by various vehicles, then information exchange is enabled, but association errors result due to map material differences
Solution Approach 1:
The patent introduces measured landmark position information as an intermediary reference that mediates between different vehicle map systems. All vehicles can independently measure and report landmark positions, creating a common reference framework that enables accurate association of transmitted information across different map systems without suffering from map material differences
Data Source
AI summary
A method for providing an information signal (8) for at least partially automatic vehicle control involves an environment sensor system (3) of a motor vehicle (1) being used to generate measurement data for surroundings of the motor vehicle (1). A computing unit (2) of the motor vehicle (1) is used to identify an object (7) and a landmark (5) on the basis of the measurement data. The computing unit (4) is used to determine a first relative position of the object (7) in relation to the landmark (5) on the basis of the measurement data. A communication interface (4) of the motor vehicle (1) is used to generate the information signal (8) on the basis of the first relative position.