Vehicle Control Apparatus Using Key Point Data for Route Navigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle control systems require a large amount of data to be stored and communicated for automatic driving, leading to storage and communication congestion, especially in regional areas, where infrastructure may be insufficient.
Innovation Solution
A vehicle control apparatus that generates lane travel map data using steering modification points and vehicle speed target points associated with map information, allowing the vehicle to travel along a route using a small amount of data, with the ability to dynamically update this data as the vehicle moves, thereby reducing the need for extensive pre-stored target positions and speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If target locus data and target vehicle speed data are prepared at fixed distance intervals for automatic driving, then the vehicle can travel along a route, but a large amount of data must be stored in the database
Solution Approach 1:
The patent segments the continuous target locus data into discrete key point data (steering modification points and vehicle speed target points). Instead of storing target positions at every fixed distance interval, the system stores only the critical points where steering or speed changes are required. The control unit then generates intermediate target positions by interpolating between these key points, dramatically reducing database storage requirements while maintaining automatic driving functionality.
2Adaptability or versatility
If the vehicle obtains automatic driving data dynamically from a computer using high speed communication, then the latest route information can be used, but communication line congestion occurs due to large amount of communication
Solution Approach 1:
The patent extracts only the essential control parameters (steering modification points and vehicle speed target points) from the complete target locus data and stores them in the vehicle's database. This extraction allows the system to operate with minimal data, reducing the communication burden when updating route information. The vehicle can dynamically update its navigation by receiving only the key point data for new routes rather than complete detailed trajectories.
3Ease of operation
If target positions and target vehicle speeds are stored at fixed distance intervals, then continuous control data is available, but it is difficult to store such large amount of data in the vehicle database
Solution Approach 1:
The patent performs preliminary generation of target locus data by the control unit using the stored key point data. Instead of pre-storing all intermediate target positions, the system pre-processes the key points to generate the complete target locus only when needed for a specific route. This on-demand generation approach maintains continuous control availability while avoiding the storage burden of pre-computed detailed trajectories.
Data Source
AI summary
A vehicle control apparatus includes: a storage apparatus configured to store a steering modification point of a vehicle and a vehicle speed target point of the vehicle that are associated with map information; and an electronic control unit configured to: detect a position of the vehicle; detect a travel direction of the vehicle; calculate a lane travel distance, the position of the vehicle, and the travel direction of the vehicle; generate, lane travel map data, a target direction of the vehicle, and a target vehicle speed of the vehicle, on the basis of the map information, the steering modification point, the vehicle speed target point, the position of the vehicle, and the travel direction of the vehicle; and output a control signal to control the vehicle on the basis of the position of the vehicle, the lane travel distance of the vehicle, and the lane travel map data.