Drive Assist Apparatus Tollgate Navigation Without White Lines
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional drive assist apparatuses are unable to perform control functions when no white lines are present, such as in front of and behind a tollgate on an expressway.
Innovation Solution
A drive assist apparatus that includes a position acquisition unit, a scheduled traveling route creation unit, and a travel control unit, which creates and controls a scheduled traveling route from the vehicle's position to a target lane through a tollgate, even in the absence of white lines, using GPS, map information, and sensors like cameras and millimeter wave sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If white line recognition is used for drive assist control, then control accuracy is improved when white lines are present, but the system becomes unable to operate in areas without white lines such as tollgates
Solution Approach 1:
The patent introduces map information as an intermediary data source to bridge the gap when white lines are unavailable. The system uses pre-stored map data containing road and lane information to generate scheduled traveling routes, allowing the drive assist function to operate in tollgate areas and other locations without visible white lines while maintaining control accuracy through the intermediary guidance of map-based route information
Solution Approach 2:
The system performs preliminary actions by acquiring and storing map information in advance before the vehicle reaches areas without white lines. The scheduled traveling route is created beforehand using map data, enabling the drive assist control to seamlessly transition from white line-based guidance to map-based guidance when white lines are absent, thus maintaining continuous operability
2Adaptability or versatility
If the system switches to map-based route guidance when white lines are absent, then operability in tollgate areas is improved, but the complexity of the system increases
Solution Approach 1:
The patent implements a dynamic system that automatically switches between white line recognition mode and map-based scheduled traveling route mode based on the presence or absence of detectable white lines. This dynamic adaptation allows the system to maintain appropriate complexity level for each operating condition - using simple white line tracking when available and transitioning to map-based guidance only when necessary, thus improving operability in tollgate areas without permanently increasing system complexity
Solution Approach 2:
The drive assist control unit is designed with multi-functionality to perform both white line recognition and map-based scheduled traveling route generation. By integrating multiple functions into a single control unit that can adaptively switch between operating modes, the system achieves universal operability across different road conditions (both with and without white lines) without requiring separate dedicated systems, thereby limiting the increase in overall system complexity
Data Source
AI summary
A drive assist apparatus includes a position acquisition unit that acquires a position of an own vehicle, a position of a tollgate present ahead of the position of the own vehicle, and a position of a target lane in a road present ahead of the tollgate, a scheduled traveling route creation unit that creates a scheduled traveling route from the position of the own vehicle to the position of the target lane through the position of the tollgate, and a travel control unit that controls the own vehicle so as to travel along the scheduled traveling route.