Vehicle Camera Limit Line Detection for Safe Cornering
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Solution Overview
Problem
Many drivers negotiate corners at unsafe speeds, risking collisions due to insufficient visibility and stopping distance awareness.
Innovation Solution
A method and safety system for motor vehicles that uses a camera to capture images of the road ahead, determining a limit line and distance, calculating the stopping distance based on vehicle speed, and alerting the driver if it exceeds a safe limit, with the option to adjust speed automatically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If drivers negotiate corners at higher speeds, then productivity increases, but safety deteriorates due to insufficient stopping distance
Solution Approach 1:
The system continuously monitors the driver's speed and compares it against the calculated safe cornering speed, providing real-time feedback through visual and audible warnings to correct unsafe behavior
Solution Approach 2:
The system calculates the safe cornering speed in advance based on road geometry and visibility conditions before the driver enters the corner, allowing preventive action rather than reactive correction
2Reliability
If drivers maintain lower speeds to ensure safety, then safety improves, but productivity decreases due to reduced cornering speed
Solution Approach 1:
The system dynamically adjusts the safe cornering speed parameter based on changing road conditions, geometry, and visibility, allowing optimal speed selection rather than fixed conservative limits
Solution Approach 2:
The system provides a dynamic safe cornering speed that adapts to real-time conditions, allowing drivers to maintain higher speeds when conditions permit while ensuring safety when conditions deteriorate
3Reliability
If the system provides continuous speed alerts, then safety improves through driver awareness, but device complexity increases
Solution Approach 1:
The alert system is segmented into distinct warning levels (visual and audible) that activate based on specific conditions, making the complex safety function manageable through modular alert delivery
Solution Approach 2:
The system uses the vehicle's existing display and audio infrastructure to deliver alerts, avoiding the need for separate dedicated alerting hardware and reducing overall system complexity
Data Source
AI summary
A method to operate a motor vehicle is provided. The method comprises capturing an image of the road ahead of the vehicle; determining a limit point on a first side of a lane of the road in which the vehicle is travelling, at which the first side appears to substantially converge with a second side of the lane within the image; determining a limit line extending across the road from the limit point in a direction perpendicular to the first and/or second sides of the lane; determining a limit distance between the vehicle and the limit line; determining a stopping distance of the vehicle according to the current speed of the vehicle; and alerting a driver of the vehicle if the stopping distance is greater than the limit distance. A safety system for a vehicle is also provided.