Map Information Apparatus for Vehicle Driving Situation Determination
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Solution Overview
Problem
Existing driving assistance systems rely solely on sensor data for determining vehicle behavior, which can lead to inaccurate assessments on curved or winding roads, as they do not account for road shape and situation-specific information.
Innovation Solution
An apparatus and method that updates a vehicle's position on a detailed map, selects an effective region based on the vehicle's position, and generates a road model according to the requested type of vehicle device, incorporating lane information and local reference routes to accurately determine the driving situation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensor data alone is used to determine vehicle behavior, then device complexity is reduced, but measurement precision deteriorates on curved or winding roads
Solution Approach 1:
The map database is segmented into multiple map blocks, each representing a specific geographic region. Only the map block containing the vehicle's current position is loaded and processed, dividing the vast map data into manageable segments that can be efficiently handled by the vehicle device
Solution Approach 2:
The server extracts and transmits only the necessary map block data corresponding to the vehicle's current position and surrounding area, rather than transmitting the entire map database. This extracts only the relevant information needed for accurate driving situation determination
2Measurement precision
If the entire map database is transmitted to the vehicle device, then measurement precision is improved, but loss of time increases due to large data transmission
Solution Approach 1:
The server identifies and extracts only the specific map block containing the vehicle's position and necessary surrounding map data, transmitting only this extracted portion to the vehicle device, thereby minimizing transmission time while maintaining determination accuracy
Solution Approach 2:
The map database is pre-divided into multiple map blocks organized by geographic regions before transmission. This preliminary organization allows the server to quickly identify and transmit only the relevant block without processing the entire database during real-time operation
3Measurement precision
If detailed map data is processed locally, then measurement precision is improved, but productivity decreases due to heavy processing loads
Solution Approach 1:
The map database is divided into multiple map blocks, and only the relevant block is loaded into memory for processing. This segmentation allows the vehicle device to process map data efficiently without being overwhelmed by the entire database, maintaining both accuracy and processing speed
Solution Approach 2:
A communication interface serves as an intermediary between the map database and the vehicle device, managing the transmission and loading of map blocks. This intermediary handles data exchange efficiently, allowing the vehicle device to focus on processing only the necessary data without managing the entire database
Data Source
AI summary
An apparatus for providing map information for determining a driving situation of a vehicle includes a processor configured to update a position of an own vehicle to a detailed map including lane information, configure a valid detailed map by selecting an effective region around the position of the own vehicle on the basis of the position of the own vehicle on the detailed map, and generate a road model according to a requested type of a vehicle device which has requested providing of map information, using the valid detailed map.