Multi-Camera Rearview Display for Tractor-Trailer Turning Blind Spots
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Solution Overview
Problem
The existing rearview mirror systems for tractor-trailers fail to provide a clear field of view when the vehicle turns, as the trailer blocks the view, leading to potential accidents due to blind spots.
Innovation Solution
A display system comprising multiple cameras and sensors that compensate for blind areas by synthesizing images from left front, right front, left rear, and right rear cameras, using an angle sensing sensor to adjust the field of view and remove blocked areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional rearview mirror is used, then the structure is simple and cost is low, but the field of view is blocked by the trailer when turning, creating blind spots
Solution Approach 1:
The system divides the viewing task into multiple segments by using four separate cameras (left front, right front, left rear, right rear) positioned at different locations on the vehicle. Each camera captures a specific sector of the environment, and the processor synthesizes these segmented views into a comprehensive display that eliminates blind spots while maintaining acceptable system complexity
Solution Approach 2:
The system transitions from a single-dimension rearview mirror reflection to a multi-dimensional digital display system. By capturing images from multiple spatial dimensions and synthesizing them into a composite view that can be displayed on screens positioned in different orientations, the system provides全方位 visibility that eliminates the blocking problem inherent in traditional mirrors
2Reliability
If multiple cameras are used to eliminate blind spots, then the field of view is comprehensive, but the device complexity increases
Solution Approach 1:
The processor serves multiple functions: it receives images from all four cameras, synthesizes the composite view, adjusts exposure levels, and outputs to multiple displays simultaneously. This multi-functionality consolidates what would otherwise require separate dedicated components, reducing overall system complexity while maintaining comprehensive safety coverage
Solution Approach 2:
The system merges the functions of multiple cameras and display units into an integrated safety monitoring system. The four cameras are combined into a single composite image that is then distributed to multiple displays, creating a unified system that provides comprehensive coverage without requiring separate independent systems for each viewing angle
3Adaptability or versatility
If the trailer angle deviates greatly, then the turning capability is improved, but the blind area increases as the trailer blocks the view
Solution Approach 1:
The system dynamically adapts to changing trailer angles by continuously monitoring the relative position between vehicle head and trailer, and adjusting the camera synthesis and display output in real-time. This dynamic adjustment ensures that regardless of the trailer's angular position during turning, the system maintains comprehensive visibility and eliminates blind spots
Data Source
AI summary
Disclosed is a display system for compensating a blind area of a field of view in a rearview mirror of a tractor-trailer. The system includes an acquisition apparatus, a sensing apparatus, a display control apparatus, and a display apparatus. The acquisition apparatus includes a left front camera, a right front camera, a left rear camera, and a right rear camera. The sensing apparatus is an angle sensing sensor arranged on a tractor-trailer, and the angle sensing sensor is used to obtain the angle by which the axis of a trailer deviates from the axis of a vehicle head. The display control apparatus is connected to the acquisition apparatus and the sensing apparatus. The display apparatus is a display arranged in a cab and is used for displaying to the driver an image output by the display control apparatus. By means of the multi-camera configuration, during turning, picture compensation is performed on an area in the rearview mirror that is blocked by the trailer, thereby effectively solving the problem of the trailer blocking field of view for observing. Compared with an ordinary panoramic image spliced when use a fish-eye lens, a driver can more intuitively perceive the position at which a risk factor is located, thereby reducing thinking time and reducing accidents.