UAV Aero-Printing System for Inaccessible Structures
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Solution Overview
Problem
Conventional methods for cleaning and repainting street signs without removing them are difficult and dangerous, and existing printing technologies are not suited for efficient, precise application on large or hard-to-reach structures like bridges and transmission towers.
Innovation Solution
A system of unmanned aerial vehicles (UAVs) with a guide rail and carriage guide, equipped with a printhead assembly, allows for controlled, in-flight movement and printing on targets, using computer vision and AI for alignment and positioning, enabling efficient printing on vertical or horizontal surfaces without physical attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used to clean and repaint street signs without removing them, then the task can be performed without taking down the sign, but the process is difficult and dangerous
Solution Approach 1:
The patent replaces manual mechanical cleaning and painting operations with an automated UAV-based system. The UAV carries a printhead assembly that can apply colorant material to street signs from the air, eliminating the need for workers to physically access dangerous locations. This substitution of mechanical human labor with automated aerial technology directly addresses the safety and operational difficulty contradictions.
Solution Approach 2:
The patent introduces a UAV as an intermediary between the operator and the street sign. The UAV serves as a mediating platform that can position itself precisely near the target sign, carry the printing equipment, and execute the cleaning and repainting tasks without requiring human presence at the dangerous location. This intermediary approach resolves both the safety concerns and operational difficulties.
2Productivity
If existing printing technologies are used on large or hard-to-reach structures, then printing can be performed on these structures, but the process is inefficient and imprecise
Solution Approach 1:
The patent replaces traditional ground-based printing equipment with an aerial UAV system. The UAV can access any surface regardless of height or complexity, moving the printing mechanism to the workpiece rather than requiring the workpiece to be accessible from the ground. This substitution enables efficient and precise printing on previously inaccessible structures.
Solution Approach 2:
The patent transitions from two-dimensional ground-based printing to three-dimensional aerial printing. By operating in the air space above the target structure, the UAV can reach surfaces that are vertically or horizontally inaccessible from the ground, adding a dimensional aspect that simultaneously improves efficiency and precision for complex structures.
3Manufacturing precision
If physical attachment to the target is required for printing, then stable printing can be achieved, but the target must be removed or physically accessed
Solution Approach 1:
The patent moves the printing operation from ground level to aerial space, allowing the UAV to position itself in three-dimensional space near the target structure. This dimensional change eliminates the need for physical attachment or removal of the target, as the UAV can maintain stable printing operations from its aerial position using guidance systems and controlled hovering.
Solution Approach 2:
The UAV acts as an intermediary platform that provides stable mounting for the printhead assembly without requiring attachment to the target structure. The UAV's flight control system and positioning mechanisms serve as the stabilization intermediary, allowing precise printing operations while keeping the target structure in place and accessible.
Data Source
AI summary
Systems and methods relate generally to aero-based printing. In an example thereof, obtained are unmanned aerial vehicles (UAVs) having a first UAV attached to a guide rail and a second UAV attached to an insert or a carriage guide (“guide”). The guide is configured for coupling into or onto the guide rail for slidable movement with a printhead assembly attached to the guide for movement therewith. The printhead assembly includes at least one colorant material holder. In-flight movement of the guide rail is controlled via the first UAV to a print target. In-flight movement of the second UAV is controlled for engagement of the guide into or onto the guide rail. The second UAV communicates to the printhead assembly for controlled printing responsive in part to movement of the guide by the second UAV relative to the guide rail.