Dump Truck Rear Camera Edge Projection
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Solution Overview
Problem
Extra-large dump trucks face challenges in grasping the positional relationship of their vehicle body and surrounding objects due to their wide and long dimensions, making it difficult for drivers to determine if objects are below the vehicle body or how close they are to structures using conventional camera images.
Innovation Solution
A periphery monitoring apparatus with multiple cameras, including a rearward camera positioned underneath the vessel, displays the vehicle body's outer edge line and ground surface on a monitor, allowing drivers to easily assess the positional relationship of the vehicle body and surrounding objects, with optional bird's-eye views and warning lines for enhanced situational awareness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a rear camera is disposed below the vehicle body to capture the rear area, then the camera can record the ground surface and rear objects, but the vehicle body appears upward of the camera making it difficult to grasp the positional relationship of the vehicle body and surrounding objects
Solution Approach 1:
The patent introduces a vehicle body image generation unit that creates a synthetic representation of the vehicle body based on stored dimensional data. This intermediary element is superimposed on the camera image to show the actual position and size of the vehicle body relative to surrounding objects, solving the problem of unclear positional relationships without requiring additional physical cameras or sensors
Solution Approach 2:
The patent replaces the need for multiple physical cameras or complex mechanical measurement systems with an information processing approach. By storing vehicle body dimensional data and generating images through computer processing, the system substitutes mechanical/optical complexity with computational simplicity, achieving accurate positional representation through data manipulation rather than physical measurement
2Device complexity
If the vehicle body is positioned above the camera to capture rearward view, then the camera can be mounted in a compact location, but the camera image does not clearly show the outer edge of the vehicle body and ground surface relationship
Solution Approach 1:
The patent creates a two-dimensional copy of the three-dimensional vehicle body by generating an image based on stored dimensional data. This copy represents the vehicle body's outer edges and dimensions accurately when superimposed on the camera image, providing precise positional measurement information without requiring complex physical measurement devices
Solution Approach 2:
The patent transitions from three-dimensional physical vehicle body to a two-dimensional represented image by vertically projecting the vehicle body outer edge onto the ground surface plane. This dimensional transformation allows the camera to capture and display accurate positional relationships on a two-dimensional display, simplifying the mounting requirements while maintaining measurement precision
Data Source
AI summary
A dump truck having a periphery monitoring apparatus is adapted to display an image of surroundings of the dump truck on a display apparatus. A rearward camera is attached to a vehicle body of the dump truck underneath a vessel of the dump truck and positioned forward of a rear edge portion of the vessel. A rearward camera image captured by the rearward camera includes the rear edge portion of the vessel, an area below the vessel, and an area rearward of the vehicle body. A display control section is configured to display the rear edge portion of the vessel in an upper region of the rearward camera image, to display a ground surface below the vessel in a lower region of the rearward camera image, and to display a vehicle body outer edge line obtained by vertically projecting an outer edge of the vessel onto the ground surface.