Vehicle Traffic Light Path Matching Without Map Positions
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Solution Overview
Problem
Conventional vehicle control systems rely on pre-existing position information of traffic lights, which can lead to inadequate control when such information is unavailable, compromising safety and effectiveness in navigating traffic lights.
Innovation Solution
A vehicle control device that recognizes surrounding situations, calculates the deviation of detected traffic lights relative to the travel path, determines if the light is relevant, and controls the vehicle accordingly without relying on pre-stored traffic light positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the vehicle control system relies on pre-existing position information of traffic lights, then the control accuracy for known routes is improved, but the system becomes unable to handle unknown or uncharted routes
Solution Approach 1:
The system performs preliminary recognition of traffic lights and their positions before the vehicle reaches them, using the recognition unit to detect traffic lights in advance and calculate their positions relative to the travel path. This allows the vehicle to be prepared for upcoming traffic lights even on unknown routes, resolving the contradiction by enabling accurate control without relying on pre-stored position information.
Solution Approach 2:
The invention introduces an intermediary recognition unit that acts as a mediator between the vehicle's navigation system and the traffic light control system. This recognition unit detects and recognizes traffic lights in the environment, calculating their positions and deviations without requiring pre-existing position information, thereby enabling the vehicle to adapt to unknown routes while maintaining accurate traffic light control.
2Reliability
If the system uses map information including position information on traffic lights, then the control reliability for standard routes is improved, but the system fails when map information is unavailable
Solution Approach 1:
The system performs self-service by using its own recognition unit to detect and identify traffic lights in the environment, rather than relying on external map information. The recognition unit calculates the position of detected traffic lights relative to the vehicle's travel path, enabling the system to maintain reliable control on both known and unknown routes through self-powered environmental recognition.
Solution Approach 2:
The system performs preliminary detection and recognition of traffic lights before the vehicle reaches them, using the recognition unit to identify traffic lights and calculate their positions in advance. This preliminary action ensures reliable control by preparing the vehicle for upcoming traffic lights regardless of whether map information is available, resolving the contradiction between reliability and adaptability.
3Measurement precision
If the vehicle control device calculates deviation of traffic lights relative to travel path, then the accuracy of traffic light identification is improved, but the computational complexity increases
Solution Approach 1:
The system applies local quality by focusing computational resources on calculating the deviation of traffic lights relative to the vehicle's current travel path, rather than performing comprehensive global calculations. The recognition unit calculates position deviation specifically for detected traffic lights based on their relative position to the travel path, achieving accurate traffic light identification with minimized computational complexity by addressing only the locally relevant geometric relationship.
Data Source
AI summary
A vehicle control device for controlling a vehicle, includes: a recognition unit configured to recognize a surrounding situation of the vehicle; a deviation calculation unit configured to, in a case where a traffic light is recognized by the recognition unit, calculate a deviation amount of the traffic light relative to a travel path on which the vehicle travels; a determination unit configured to determine whether the traffic light is a traffic light corresponding to the travel path based on the deviation amount calculated by the deviation calculation unit; and a vehicle control unit configured to control the vehicle based on a determination result of the determination unit.