Dual-Camera Lane-Change Collision Detection for Overtaking
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Solution Overview
Problem
Existing vehicle vision systems struggle to effectively detect oncoming vehicles during overtaking maneuvers, particularly when the oncoming vehicle is obscured or the driver is distracted.
Innovation Solution
A vehicle vision system that includes a front camera and a side camera with CMOS imaging arrays, an electronic control unit (ECU) with image processing capabilities, and sensors mounted at various locations (such as side mirrors and bumpers) to capture and process image data, detect leading and oncoming vehicles, and provide warnings or active interventions to prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single front camera is used to detect vehicles, then the system structure is simple, but the ability to detect oncoming vehicles during overtaking maneuvers is insufficient
Solution Approach 1:
The patent divides the detection task into multiple segments by using separate cameras for different functions: a front camera for detecting leading vehicles and a side camera for detecting oncoming vehicles during overtaking maneuvers. This segmentation allows each camera to be optimized for its specific detection task, improving overall detection reliability without requiring a single complex camera system to handle all scenarios.
2Measurement precision
If the driver remains attentive to detect oncoming vehicles, then detection accuracy is high, but this requires continuous driver attention which is not always available
Solution Approach 1:
The system performs self-service by automatically detecting oncoming vehicles and processing detection data without requiring continuous driver attention. The side camera mounted on the vehicle autonomously monitors the adjacent lane for oncoming vehicles during overtaking maneuvers, and the electronic control unit automatically processes the captured images to identify potential collision risks, freeing the driver from the need to maintain constant vigilance.
3Loss of time
If the side camera detects oncoming vehicles earlier, then collision avoidance time is increased, but the camera field of view must be adjusted which adds system complexity
Solution Approach 1:
The side camera is pre-positioned on the side mirror or side of the vehicle to provide an optimized field of view for detecting oncoming vehicles during overtaking maneuvers. This preliminary positioning ensures the camera is already oriented to capture the adjacent lane before overtaking begins, enabling early detection of oncoming vehicles and maximizing collision avoidance time without requiring complex real-time adjustment mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively detects oncoming vehicles during overtaking maneuvers, reducing the risk of collisions by providing timely warnings and potentially engaging active safety features such as steering lock or prefilling the brakes.
Implementation Method 1
The front camera includes a CMOS imaging array with at least one million photosensors arranged in rows and columns. The side camera includes a CMOS imaging array with at least one million photosensors arranged in rows and columns.
Data Source
AI summary
A vehicular vision system includes a front camera disposed at a windshield of a vehicle equipped with the system and a side camera disposed at a side mirror of the vehicle. An electronic control unit (ECU) includes an image processor for processing image data captured by the cameras. The vehicular vision system, responsive to processing by the image processor of image data captured by the front camera, detects a leading vehicle traveling in front of the equipped vehicle in a traffic lane the equipped vehicle is also traveling along. The vehicular vision system, responsive to determination of an intent of the equipped vehicle to change lanes and to processing by the image processor of image data captured by the side camera, detects an oncoming vehicle traveling in a traffic lane adjacent to the traffic lane the equipped vehicle is traveling along.