Rear Vision View Angle Control for Safer Lane Merging
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Solution Overview
Problem
Drivers face difficulty in manually adjusting the zoom and focus of rear vision system cameras to accommodate changing driving conditions, particularly during lane merges or intersections, which can compromise safety and comfort.
Innovation Solution
A method that automatically adjusts the view angle of rear vision system images based on GPS data and map information to widen the view when merging or approaching intersections, using varying view angles and smoothing transitions to enhance visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the driver manually adjusts the zoom and focus of the rear vision system camera, then the view angle can be adapted to specific driving conditions, but this requires continuous manual intervention and delays the driver's ability to respond to changing conditions
Solution Approach 1:
The rear vision system automatically adjusts the view angle based on GPS location data and map information without requiring manual driver intervention. The system detects when the vehicle is approaching merging portions or intersections and autonomously widens the view angle, allowing the system to serve itself rather than requiring continuous driver operation.
Solution Approach 2:
The system continuously receives GPS location data and compares it with pre-stored map information to determine the vehicle's position relative to merging portions and intersections. Based on this feedback loop, the system dynamically adjusts the camera's view angle in real-time to match the current driving context.
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 during merging or intersections
Solution Approach 1:
The view angle of the rear vision system transitions from a static default state to a dynamic adjustable state. The system automatically modifies the view angle based on the vehicle's location relative to merging portions and intersections, ensuring optimal visibility without requiring manual driver adjustment while maintaining simple operation.
3Loss of information
If the system automatically adjusts the view angle based on GPS and map data, then the driver gets enhanced visibility during merges and intersections, but the device complexity increases
Solution Approach 1:
The system integrates multiple functions into a single automated process: GPS location tracking, map data processing, vehicle position determination, and view angle adjustment all work together as one unified system. This multi-functional approach enhances rear side visibility during merges and intersections without requiring separate manual controls for each function.
4Loss of information
If the view angle is widened during merging portions, then the driver can see vehicles behind without turning head, but the view of distant objects may be reduced
Solution Approach 1:
The system dynamically adjusts the view angle based on the vehicle's specific location and the geometric characteristics of the merging portion. By calculating the direction deviation and incident angle, the system optimizes the view angle to maximize rear side visibility while minimizing loss of overall visible area, adapting in real-time as the vehicle progresses through the merging portion.
Data Source
Figure 1~3
AI summary
Method for automatically adapting a view angle (1) of a displayed image on a side screen (3) of a rear vision system (5) of a vehicle (7), said rear vision system (5) having a side camera (9) adapted to generate said displayed image according to a varying view angle (1) 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 (7) on the map at each determined interval; adapting the view angle (1) of the displayed image in function of the location of the vehicle (7) on the map, the view angle (1) being set on a default value (21) outside the merging portions and the view angle (1) being varied according to a widening pattern (23) along a merging portion.