Route Conversion Verification Using Intersection Heading Angles
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Solution Overview
Problem
Erroneous route conversion occurs when converting a navigation map route to a high-precision map for autonomous driving or driving assistance, leading to potential misguidance of vehicles.
Innovation Solution
An apparatus and method that determine the presence or absence of erroneous route conversion by comparing heading angles and road types at common intersections between navigation and high-precision maps, using an electronic control unit to analyze set and practical routes for matching or mismatching determinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If route conversion is performed from navigation map to high-precision map, then autonomous driving capability is enabled, but erroneous route conversion may occur causing misdirection
Solution Approach 1:
The system performs preliminary verification of route conversion by comparing heading angles at intersections before executing autonomous driving. The determination apparatus checks whether the heading angle of the converted practical route matches the original navigation route at common intersections, identifying erroneous conversions in advance to prevent misdirection
Solution Approach 2:
The system establishes a feedback mechanism where the determined presence or absence of erroneous route conversion is used to control execution of autonomous driving. When erroneous conversion is detected, the system prevents autonomous driving execution, creating a closed-loop control system that continuously verifies route accuracy
2Measurement precision
If heading angle comparison is performed at all intersections, then route conversion accuracy is improved, but determination complexity increases
Solution Approach 1:
The system extracts and focuses only on common intersections that exist in both the navigation route and the converted practical route. By isolating these specific intersection points for heading angle comparison, the system reduces the number of comparison points while maintaining determination accuracy, avoiding unnecessary complexity from analyzing all intersections
Data Source
AI summary
Provided is an erroneous route conversion determination apparatus that determines presence or absence of erroneous route conversion when a set route on a navigation map for a navigation system of a vehicle is converted into a practical route on a high-precision map, in which position information of intersections on the set route and heading angles at the intersections of the set route are extracted based on the navigation map and the set route, position information of intersections on the practical route and heading angles at the intersections on the practical route are extracted based on the high-precision map and the practical route, and the presence or absence of the erroneous route conversion is determined based on a heading angle of the set route and a heading angle of the practical route at a common intersection that is an intersection common between the set route and the practical route.