Adaptive Lane-Keeping Control for Variable Lane-Line Distance
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Solution Overview
Problem
Existing vehicle steering systems fail to adaptively adjust the vehicle-to-lane line distance based on driving situations, emergency vehicles, side conditions, driving proficiency, occupant number, driver attention, or emotion, leading to inadequate lane keeping performance.
Innovation Solution
A signal processing device and vehicle control system that utilizes a processor to detect lane lines, emergency vehicles, and side conditions through camera images, adjusting vehicle-to-lane line distance based on these factors, and incorporates virtual machines for enhanced lane keeping modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vehicle steering system is controlled to position a vehicle in the center of a lane without considering driving situations, then the lane keeping mode can be simply implemented, but the lane keeping performance is inadequate and does not adapt to emergency vehicles or side conditions
Solution Approach 1:
The patent implements dynamic lane keeping by allowing the vehicle to switch between a first lane keeping mode (maintaining constant distance from lane line) and a second lane keeping mode (adjusting distance based on emergency vehicles or side conditions). This dynamic switching enables the system to adapt to different driving situations without requiring complete redesign of the control architecture.
Solution Approach 2:
The processor acts as an intermediary that detects emergency vehicles and side conditions, then mediates between the basic lane keeping control and the adaptive adjustments. The processor analyzes sensor data and determines when to switch between lane keeping modes, serving as the intelligent intermediary that enables adaptability without direct complex mechanical modifications.
2Reliability
If the vehicle maintains a constant distance from the lane line, then the control algorithm is simple, but the vehicle cannot respond to emergency vehicles approaching from behind or obstacles on the side
Solution Approach 1:
The system performs preliminary detection of emergency vehicles and side conditions using sensors before taking lane keeping actions. The processor continuously monitors the environment and prepares to switch to the second lane keeping mode when potential hazards are detected, enabling proactive safety responses rather than reactive adjustments.
Solution Approach 2:
The system implements feedback mechanisms where the processor continuously receives sensor data about emergency vehicles and side conditions, evaluates the situation, and adjusts the lane keeping mode accordingly. This closed-loop feedback enables the vehicle to respond to detected hazards by switching from constant distance maintenance to adaptive distance adjustment.
3Adaptability or versatility
If the system switches between first and second lane keeping modes based on detected conditions, then the vehicle can adapt to emergency vehicles and side conditions, but the processing complexity and computational load increase
Solution Approach 1:
The patent segments the lane keeping control into two distinct modes: a first mode for normal operation with constant distance maintenance, and a second mode for hazardous conditions with adaptive distance adjustment. This segmentation allows the system to use simple control logic for most situations while reserving complex processing only for when hazards are detected, reducing overall computational burden.
Solution Approach 2:
The system applies different control qualities to different spatial situations: in the first lane keeping mode, it maintains uniform distance from the lane line, while in the second mode, it adjusts distance locally based on the position and nature of detected hazards. This local quality approach allows adaptive behavior only where needed rather than applying complex control universally.
Data Source
AI summary
A signal processing device and a vehicle control device including the same according to an embodiment of the present disclosure include a processor to receive a front image from a camera and process the received image, wherein the processor is configured to detect lines based on the front, and perform a lane keeping mode based on the detected lines, wherein in a first mode of the lane keeping mode, the processor is configured to control a steering driver to maintain a first distance from a first line of first and second lines adjacent to each other, and in a second mode of the lane keeping mode, control the steering driver to maintain a second distance from the first line, the second distance being different from the first distance. Accordingly, a vehicle-to-lane line distance may be adjusted adaptively by reflecting a driving situation during operation in the lane keeping mode.