Rear Vision View Angle Adaptation for Vehicle Merging
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Solution Overview
Problem
Drivers face difficulty in manually adjusting the zoom and focus of rear vision systems to accommodate varying driving conditions, particularly during lane changes or merging scenarios, which can compromise safety and comfort.
Innovation Solution
A method for automatically adapting the view angle of a rear vision system's displayed image using GPS data to adjust the camera's view angle based on the vehicle's location, incorporating map data to identify merging portions and applying a widening pattern to enhance the view during lane changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the driver manually adjusts the zoom and focus of the rear vision system, then the view angle can be adapted to specific driving conditions, but the driver cannot adapt instantly and this compromises safety and comfort
Solution Approach 1:
The rear vision system automatically adjusts the view angle based on GPS location data and map information about merging portions, eliminating the need for manual driver intervention. The system serves itself by detecting when the vehicle is in a merging portion and autonomously widening the view angle to provide an optimal view for lane changes.
Solution Approach 2:
The system pre-identifies merging portions using map data before the driver needs to make adjustments. By obtaining map data in advance and recognizing merging portions tangential to the main lane, the system prepares the optimal view angle setting before the driver encounters the merging situation, enabling instant adaptation without manual intervention.
2Ease of operation
If the rear vision system uses a fixed default view angle, then the system is simple to operate, but the driver cannot see rear side portions outside the default view angle during merging operations
Solution Approach 1:
The system dynamically adjusts the view angle between a default value and a widened value based on the vehicle's location. When the vehicle is in a merging portion, the view angle is automatically widened to provide extended coverage of rear side portions. When outside merging portions, the system returns to the default view angle, thus adapting the system's behavior to different operating conditions.
Solution Approach 2:
The system changes the view angle parameter automatically based on GPS location and map data. The view angle transitions from a default value to a widened value when entering a merging portion, and returns to default when exiting. This parameter change is driven by the system's detection of the vehicle's position relative to pre-identified merging portions.
3Reliability
If the driver turns head to look behind for safe insertion on main lane, then the driver can see vehicles behind, but the driver cannot maintain focus on the road ahead
Solution Approach 1:
The rear vision system with automatic view angle adjustment serves as an intermediary that provides the driver with information about rear side portions and vehicles behind during merging operations. By automatically widening the view angle when in a merging portion, the system presents this information on the side screen, allowing the driver to monitor rear traffic without physically turning the head, thus maintaining attention on the road ahead.
Data Source
AI summary
A method for automatically adapting a view angle of a displayed image on a side screen of a rear vision system of a vehicle, said rear vision system having a side camera adapted to generate said displayed image according to a varying view angle between a minimal and maximal value, the method comprising following steps: obtaining instant GPS location data; obtaining a map; determining the location of the vehicle on the map at each determined interval; adapting the view angle of the displayed image in function of the location of the vehicle on the map, the view angle being set on a default value outside the merging portions and the view angle being varied according to a widening pattern along a merging portion.