Field-Marking Robot Wheel Layout for Precise Paint Application
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Solution Overview
Problem
Existing self-propelled robot units for marking surfaces face challenges such as difficulty in programming for non-technical users, potential wheel obstruction, and uneven pigment distribution due to sedimentation in marking liquids, leading to unreliable and inefficient operations.
Innovation Solution
A self-propelled robot unit with a navigation system and movement devices featuring two driven wheels and two non-driven wheels, along with an effect unit placed next to one of the driven wheels, allowing for precise positioning and paint application, and a valve system for thorough paint mixing and flushing to prevent sedimentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the robot unit uses a conventional single-wheel or two-wheel drive system, then the device complexity is reduced, but the stability and ability to navigate ramps and varied terrain deteriorates
Solution Approach 1:
The robot unit divides its wheel system into four separate wheels arranged in a rectangular pattern, with each wheel independently controllable. This segmentation allows the robot to navigate complex terrains and ramps by independently adjusting each wheel's position and rotation, thereby improving stability without requiring an overly complex centralized drive mechanism.
Solution Approach 2:
The patent introduces a fourth dimension of control by adding independent rotational freedom to each wheel around its own axis perpendicular to the robot's center axis. This allows the wheels to adapt to terrain variations in multiple directions, enhancing the robot's ability to handle ramps and uneven surfaces while maintaining a relatively simple overall structure.
2Device complexity
If the effect unit (nozzle) is placed at the center of the robot unit, then the device complexity is reduced, but the manufacturing precision and marking accuracy deteriorates
Solution Approach 1:
The effect unit (nozzle) is deliberately positioned asymmetrically at an outer side of the wheels relative to the center axis, rather than at the geometric center. This asymmetric placement, combined with the independently controllable four-wheel system, allows the robot to compensate for the offset position through differential wheel rotation, thereby achieving precise marking while maintaining a simple device structure.
3Ease of operation
If the robot unit uses a simple programming system, then the ease of operation is improved, but the adaptability to specific tasks and terrain deteriorates
Solution Approach 1:
The robot unit incorporates sensors and navigation systems that enable it to autonomously detect and adapt to terrain variations, ramp angles, and marking surface conditions. This self-service capability allows the robot to handle diverse tasks and terrains without requiring complex manual programming, thereby maintaining ease of operation while enhancing adaptability.
Data Source
AI summary
A self-propelled robot unit including a navigation system and movement items for positioning of the robot unit on an even base and a system for impacting predefined areas of the base during the unit's movement between two points on the base is provided. The robot unit's system for impacting predefined areas of the base includes at least one effect unit provided by an outer side of the wheels in relation to the center axis, but upwards one of the driven wheels. An embodiment also relates to a method for creation of a plan for the robot unit's movements and placement of markings for a ball game field.