Navigation System Intersection Maneuver Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current navigation systems are prone to errors in complex intersection situations, leading to misinterpretations and stress for drivers due to deviations between navigational instructions and real road layouts, particularly in scenarios with many lanes and traffic islands.
Innovation Solution
A method for operating a navigation system that determines maneuvers by prioritizing database information linked to intersection points, using angle information from turn arrows and road markers to generate navigation instructions that align with the actual road situation, reducing computational reliance and improving user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If maneuvers are determined using geometric relationships between sequential edges, then route calculation is possible, but deviations between navigation instructions and real road layout occur leading to user confusion
Solution Approach 1:
The patent introduces maneuvering information stored in a database as an intermediary between the digital road map and navigation instructions. This database contains pre-stored maneuvering information (such as turn directions, lane changes) that mediates between the geometric road data and the final navigation output, ensuring accuracy without requiring complex real-time geometric calculations at each intersection
Solution Approach 2:
The patent applies preliminary action by pre-storing maneuvering information in the database before navigation is needed. During route calculation, the system retrieves pre-computed maneuvering instructions rather than calculating them geometrically in real-time, which improves reliability while reducing computational complexity during actual navigation
2Productivity
If navigation instructions are generated using algorithms based on edge geometry, then route guidance is provided, but errors occur in complex intersection situations with many lanes and traffic islands
Solution Approach 1:
The patent uses a database with pre-stored maneuvering information as an intermediary layer between the digital road map and navigation output. This intermediary contains accurate, pre-validated maneuver instructions for complex intersections, eliminating errors that would otherwise occur when algorithms attempt to interpret complex geometric relationships in real-time
Solution Approach 2:
The patent creates a copy of essential maneuvering information from the digital road map and stores it in a separate database. This copy contains simplified, validated maneuver instructions that can be reliably retrieved during navigation, avoiding the need to repeatedly process complex geometric data from the original map
3Adaptability or versatility
If additional information is assigned to edges by geographic position, then route optimization is enabled, but deviations between calculated maneuvers and actual road markers occur
Solution Approach 1:
The patent introduces a database as an intermediary that stores maneuvering information linked to geographic positions. This intermediary layer decouples the route optimization calculations from the actual maneuver instructions, allowing route optimization to use geographic data while maneuver precision is ensured by pre-stored, validated instructions in the database
Solution Approach 2:
The patent applies preliminary action by pre-storing accurate maneuvering information at specific geographic positions in the database. This pre-stored information is then retrieved during navigation based on the optimized route, ensuring that even when routes are dynamically optimized, the maneuver instructions remain precisely aligned with actual road markers
Data Source
AI summary
The invention relates to a method for operating a navigation system. A route is first ascertained from a starting location to a target location using digital map data. At least one intersection point of the route ascertained in this manner is selected, and a database entry linked to said intersection point is read out. Read-out maneuvering information is used in order to ascertain a maneuver to be performed at the selected intersection point and in order to lastly output a navigation instruction corresponding to the ascertained maneuver. The invention additionally relates to a navigation system which is designed to perform the method, to a vehicle comprising the navigation system, and to a method for storing maneuvering information.