Intersection Signal Processing Using Geofenced Lane Context
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Solution Overview
Problem
Current autonomous driving systems face challenges in accurately obtaining and processing intersection information, which is crucial for safe vehicle control, especially when vehicles frequently change lanes or encounter varying lane configurations.
Innovation Solution
A method and device for processing signal operation information of an intersection, involving the transmission of driving status information to an external device, determining the relevant intersection based on the vehicle's location and heading, and receiving signal operation information using geofencing areas, enabling precise control of autonomous driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If autonomous driving systems use general intersection information processing methods, then the system complexity is reduced, but the accuracy and reliability of intersection information acquisition deteriorates
Solution Approach 1:
The patent segments the intersection information processing into distinct components: determining the vehicle's current lane, identifying the relevant intersection based on lane and heading, and then acquiring signal operation information. This segmentation allows the system to process only relevant intersection data rather than all possible intersections, improving accuracy while managing complexity through modular processing steps.
Solution Approach 2:
The patent applies local quality by focusing information acquisition on the specific intersection relevant to the vehicle's current lane and heading direction. Rather than uniformly processing all intersections in the area, the system selectively acquires signal operation information only for the intersection that affects the vehicle's current driving path, optimizing resource usage and accuracy.
2Loss of information
If the system processes signal operation information for all intersections, then information completeness is improved, but information processing time increases
Solution Approach 1:
The patent extracts only the necessary intersection information based on the vehicle's current lane and heading. By determining which intersection is relevant to the vehicle's current driving context and extracting only that specific intersection's signal operation information, the system avoids processing redundant data from unrelated intersections, thus reducing processing time while maintaining completeness of relevant information.
Solution Approach 2:
The patent performs preliminary determination of the vehicle's current lane and heading before acquiring intersection information. This preliminary action filters the search space for relevant intersections in advance, allowing the system to quickly identify and process only the necessary intersection data rather than searching through all intersections, thereby reducing overall processing time.
3Productivity
If the system uses simplified intersection identification methods, then processing speed is improved, but accuracy in determining relevant intersections deteriorates
Solution Approach 1:
The patent uses dynamic parameters (current lane and heading) that continuously update with the vehicle's movement to identify relevant intersections. This dynamic approach allows the system to quickly adapt to changing driving conditions and accurately identify the relevant intersection in real-time, maintaining both processing speed and identification accuracy through continuous contextual awareness.
Data Source
AI summary
Provided are a method and device for processing signal operation information of an intersection, and the method includes transmitting, to an external device, a driving status information message regarding a vehicle, determining a particular intersection, based on a current location and heading of the vehicle included in the driving status information message, and receiving, from the external device, a signal operation information message regarding the particular intersection, by using a geofencing area.