Autonomous Clay Court Sweeper With Obstacle Sensing
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Solution Overview
Problem
Existing clay tennis court sweepers require manual effort and pushing, posing a risk of injury and inefficiency.
Innovation Solution
A rechargeable battery-powered sweeper with motorized wheels and rollers, equipped with sensors and safety features, operates autonomously to even out the clay surface without human intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual sweepers are used, then the device complexity is low, but the ease of operation deteriorates due to required manual effort and pushing
Solution Approach 1:
The sweeper is equipped with autonomous navigation capabilities, including sensors for obstacle detection and avoidance, and automatic return-to-charging functionality. The system self-manages its operation without requiring continuous human intervention, resolving the contradiction by making the device service itself while accepting increased complexity through integrated control systems and sensors.
Solution Approach 2:
The patent replaces manual mechanical pushing with an electric motor-driven system. The motorized roller and drive mechanism substitute for human physical effort, transforming the operation from manual mechanical work to an automated electromechanical system, thereby improving ease of operation despite increased device complexity.
2Productivity
If motorised sweepers are used, then the productivity is improved, but the ease of operation deteriorates as they still require pushing and driving by the user
Solution Approach 1:
The autonomous navigation system with obstacle detection sensors and automatic path planning enables the sweeper to operate independently without user guidance. The system self-manages its movement across the court, maintaining high productivity while eliminating the need for user pushing or driving operations.
Solution Approach 2:
The patent implements variable speed control with multiple sweep types that can be manually selected, allowing the system to adapt its operating parameters to different court conditions and requirements. This flexibility maintains productivity while reducing operational complexity through automated parameter management.
3Ease of operation
If autonomous operation is implemented, then the ease of operation is improved, but the device complexity increases due to battery and charging station requirements
Solution Approach 1:
The sweeper automatically returns to its charging station when the battery level is low or after completing a sweeping cycle. This self-charging capability eliminates the need for manual battery replacement or charging operations, improving ease of use while managing complexity through automated battery management systems.
Solution Approach 2:
The charging station acts as an intermediary between the power source and the mobile sweeper unit. It provides automated battery recharging and potentially battery swapping functionality, enabling autonomous operation without requiring complex onboard power management in the sweeper itself.
4Productivity
If the sweeper operates at high speed, then the productivity is improved, but the safety deteriorates due to collision risks
Solution Approach 1:
The sweeper is equipped with sensors that continuously monitor the environment for obstacles and detect court line markings. This feedback system enables real-time obstacle detection and automatic speed adjustment, allowing high-speed operation during clear conditions while automatically reducing speed when obstacles are detected, thus maintaining both productivity and safety.
Solution Approach 2:
The patent implements variable speed control with different sweep types that can be selected based on conditions. The system dynamically adjusts its operating speed and pattern, enabling high-speed sweeping when safe and slower, more careful operation when obstacles or court features require attention, balancing productivity and safety through adaptive control.
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 sweeper efficiently and safely levels the clay court surface in a short time, ensuring a uniform bounce for tennis balls, reducing effort and risk of injury.
Implementation Method 1
a rechargeable battery housed under the casing
Implementation Method 2
a motorised roller driven by means of a motor
Implementation Method 3
provided with rolling means, preferably by means of two pairs of wheels
Implementation Method 4
a fixed brush is attached to the rear portion of the machine, the function of which is to shape the final straightening
Data Source
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AI summary
The invention relates to a tennis court sweeper that has a casing (1) with a generally rectangular prism-like shape, the front portion of which has a curved profile, and having two pairs of wheels (2) on its sides. It also has sweeping means and safety means, and it is driven by a motor (7) powered by a rechargeable battery (6) via a charging station, wherein the sweeping means comprise a stationary brush (3) attached to the rear portion of the machine and a rotary roller (10) driven by the motor (7). This motor is located in the inner space defined under the casing (1) and the safety means of the sweeper are, on one side, an obstacle sensor (5) and a light signal (4) that is activated when it moves along the court.