Signal Sign Grid Mapping for Reliable Junction Guidance
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Solution Overview
Problem
Existing systems face challenges in efficiently and precisely identifying and describing signaling units, particularly at traffic junctions, which affects the reliability and quality of automated longitudinal vehicle guidance.
Innovation Solution
A device and method that utilize environmental sensors to determine the arrangement of signal signs and assign them to a grid-based data structure using predefined assignment logic, enabling efficient and precise representation of signaling units for improved vehicle guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a grid-based data structure with predefined assignment logic is used to represent signal signs, then the precision and reliability of signaling unit identification is improved, but the device complexity increases
Solution Approach 1:
The signaling unit is segmented into discrete signal signs, each assigned to specific grid cells in a two-dimensional grid structure. This segmentation allows precise identification and representation of individual signal signs while maintaining an organized overall structure that improves identification precision without overwhelming complexity.
Solution Approach 2:
The patent introduces a two-dimensional grid structure (adding spatial dimensions) to represent the arrangement of signal signs. This dimensional approach enables precise spatial representation and identification of signal sign positions, transforming the identification problem into a structured grid-based system that improves precision while keeping the data structure manageable through regular patterns.
2Reliability
If environmental sensors are used to determine the arrangement of signal signs, then the reliability of vehicle guidance is improved, but the loss of time in processing and analyzing sensor data increases
Solution Approach 1:
The patent establishes a predefined grid structure and assignment logic before sensor data processing begins. This preliminary setup allows sensor data to be directly mapped to pre-defined grid cells, eliminating the need for complex post-processing analysis and reducing data processing time while maintaining high reliability through structured data organization.
Solution Approach 2:
The patent transforms continuous sensor data into discrete grid cell assignments by changing the parameter representation from analog spatial coordinates to discrete grid indices. This parameter transformation simplifies data processing and reduces computational time while maintaining the reliability needed for accurate vehicle guidance.
Data Source
AI summary
A device for identifying a signaling unit on a road on which a vehicle is traveling is described. The device is configured to determine an arrangement of one or more signal signs of the signaling unit on the basis of environmental data of one or more environmental sensors of the vehicle. The device is further configured to assign the one or more signal signs to one or more corresponding grid cells of a signal sign grid based on assignment logic.