UAV Wall Spray Printing with Trajectory Mapping for Precise Patterns
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Solution Overview
Problem
Current spray painting methods for large-scale wall advertisements are labor-intensive and difficult to execute, especially on high buildings, limiting their scalability and increasing construction costs.
Innovation Solution
An unmanned aerial vehicle (UAV)-based external wall spray printing system that uses a spray nozzle to apply coating materials, controlled by a system that maps the wall, calculates spray trajectories, and adjusts spray feature data for precise pattern creation, including color, viscosity, and direction, while maintaining a preset distance from the wall using height and satellite positioning devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If artificial spray painting is used for large-scale wall advertisements, then the advertisement can be created with simple equipment, but the labor intensity becomes very heavy and construction becomes very difficult
Solution Approach 1:
The patent replaces manual mechanical spray painting operations with an automated UAV-based spray system. The UAV carries a spray nozzle and follows pre-calculated trajectories to automatically apply coating materials, substituting human labor with an automated aerial platform that can be controlled through software programming rather than manual operation.
Solution Approach 2:
The system performs self-positioning and self-navigation through integrated GPS modules and flight control algorithms. The UAV automatically calculates its position, follows predetermined spray trajectories, and adjusts its flight path without requiring manual intervention, enabling the system to service itself during the advertisement creation process.
2Adaptability or versatility
If artificial spray painting is used for high building wall advertisements, then the advertisement can be created, but the construction becomes extremely difficult and time-consuming
Solution Approach 1:
The patent transitions from ground-based or scaffold-based spray painting to aerial three-dimensional space operations. The UAV operates in the air space above the building, accessing high walls without requiring physical contact with the structure or extensive setup of scaffolding, thereby dramatically reducing construction time while maintaining adaptability to various building heights and configurations.
3Device complexity
If manual spray painting is used for pattern creation, then the process is simple to set up, but the precision and accuracy of the pattern becomes difficult to control
Solution Approach 1:
The system incorporates real-time feedback through GPS positioning, altitude measurement devices, and trajectory monitoring. The flight control system continuously receives position data, compares it with the predetermined spray trajectory, and makes automatic adjustments to maintain precise positioning and spacing, ensuring consistent pattern accuracy throughout the spraying process.
Solution Approach 2:
The spray trajectories and flight paths are pre-calculated and programmed before the UAV operation begins. The system performs preliminary planning of the exact spray paths, spacing intervals, and positioning coordinates, allowing the UAV to execute the pattern with high precision without requiring real-time manual adjustment during the spraying process.
Data Source
AI summary
A UAV-based external wall spray printing system and a spraying method thereof, wherein a spray nozzle is disposed on the UAV. The method comprises: A. controlling a UAV to fly along edges of an external wall, and measure an area to be sprayed; B. calculating a spray trajectory for a pattern, before acquiring various positioning coordinates, establishing corresponding relationships between the coordinates and spray feature data; C. controlling the UAV to fly to positions of the area according to the respective coordinates of the spray trajectory, and calling the corresponding spray feature data to control the nozzle to spray a coating material, thus completing spraying the pattern. The spray printing system and method can rapidly spray and print an advertisement on a wall by using a UAV, thereby reducing the labor intensity and construction difficulty for construction workers.