Bucket Loader Visual Reference Beam for Precise Ground Contact
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Solution Overview
Problem
Operators of loading machines face challenges in maintaining clear visibility of the worksite due to obstructed views from the lifting implement, and remote operation is hindered by inaccurate image capture and display.
Innovation Solution
A visual reference system is integrated into the loading machine, featuring illumination devices that project a visible fiducial beam to indicate the expected contact point between the bucket and the work surface, enhancing both onboard and remote operation visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the lifting implement is positioned to provide operator visibility, then the operator can see the worksite, but the lifting implement blocks or obstructs the operator's view during use
Solution Approach 1:
The patent introduces a visual reference system with illumination devices as an intermediary element. This system projects visible fiducial beams onto the work surface to indicate the expected contact point of the bucket, serving as a mediator between the operator and the worksite. The fiducial beams provide visual guidance without requiring the operator to have direct line-of-sight to the contact point, thus resolving the obstruction problem while maintaining visibility needs.
2Ease of operation
If the operator estimates and guides the loading implement manually, then the operator can control the bucket position, but unintended contact with structures or objects may occur
Solution Approach 1:
The visual reference system provides real-time visual feedback to the operator by projecting fiducial beams that indicate the exact expected contact point. This feedback mechanism allows the operator to continuously monitor and adjust the bucket position, ensuring accurate contact with the work surface while avoiding unintended contact with structures or objects. The system transforms manual estimation into precision control through visual guidance.
3Extent of automation
If cameras and remote visual displays are used for remote operation, then the operator can remotely control the machine, but optimal images or accurate maneuvering guidance may not be captured
Solution Approach 1:
The illumination devices perform preliminary action by projecting fiducial beams onto the work surface before the bucket makes contact. This pre-positioned visual reference system ensures that when the operator views the worksite through remote cameras, the contact point is already clearly marked and visible. This preliminary visualization eliminates the need for complex image processing or post-capture analysis, providing accurate maneuvering guidance from the outset.
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 visual reference system improves operator accuracy and safety by providing a clear indication of the bucket's contact point, reducing the risk of unintended contact with obstacles and enhancing remote operation precision.
Implementation Method 1
an illumination device disposed on the machine frame and configured to project a visible fiducial beam to indicate an expected contact point between the bucket and the work surface
Data Source
AI summary
A visual reference system can be used with a loading machine such as a bucket loader having a bucket that can be vertically articulated with respect to a work surface. The visual reference system can include one or more illumination devices configured to project a visual fiducial beam toward the work surface. The visual fiducial beam can create a fiducial indication of where the bucket will contact the work surface when lowered adjacent the work surface. The visual reference system can assist in operation of the loading machine by enabling an operator to visually perceive the expected contact point between the bucket and work surface.