Wet Cleaning Robot Cloth Detection for Friction and Water Control
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Solution Overview
Problem
Existing moving robots for wet cleaning face issues with low friction, ineffective foreign substance removal, and potential damage to the robot and floor surfaces due to increased friction when the cleaning cloth is not attached, and water accumulation leading to safety hazards.
Innovation Solution
A moving robot system that rotates a cleaning cloth using a motor for increased friction on the floor surface, detects the presence or absence of the cleaning cloth through changes in traveling distance and rotation angle, and stops operation when the cloth is not attached to prevent damage and water accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the robot moves without the cleaning cloth attached, then the robot can travel freely, but the friction with the floor surface is insufficient for effective cleaning and may cause damage to the robot or floor surface
Solution Approach 1:
The robot uses sensors to detect whether the cleaning cloth is properly attached by monitoring friction force, rotational speed, and current consumption. When the cloth is missing, the system detects abnormal feedback signals (excessive friction, unusual current draw) and responds by stopping operation or alerting the user, thus preventing damage while maintaining travel freedom when the cloth is present
Solution Approach 2:
The robot autonomously monitors its own operational state by detecting parameters such as motor current, rotational speed, and friction force. The system self-diagnoses whether the cleaning cloth is attached by analyzing these parameters and automatically adjusts its operation accordingly, eliminating the need for external monitoring
2Productivity
If the robot rotates the cleaning cloth at high speed for effective cleaning, then cleaning efficiency increases, but friction and heat generation increase causing potential damage to the robot or floor surface
Solution Approach 1:
The system continuously monitors friction force, rotational speed, and temperature during operation. When abnormal friction or heat is detected, the control unit adjusts the rotational speed or stops the motor to prevent damage, while maintaining high-speed rotation under normal conditions for effective cleaning
Solution Approach 2:
The robot dynamically adjusts the rotational speed of the cleaning cloth based on real-time feedback from sensors. The system varies the rotation speed according to floor conditions, cloth attachment status, and friction levels, optimizing cleaning efficiency while preventing overheating and damage
3Productivity
If water is supplied to the cleaning cloth during operation, then wet cleaning performance improves, but water may accumulate on the floor surface causing slipping hazards
Solution Approach 1:
The system monitors operational parameters to detect whether the cleaning cloth is properly attached. When the cloth is missing or improperly attached, the system stops water supply to prevent accumulation on the floor, while enabling water supply during normal operation for effective wet cleaning
4Reliability
If the robot uses sensors to detect cleaning cloth attachment, then operational safety improves, but device complexity increases
Solution Approach 1:
The robot uses its existing operational parameters (motor current, rotational speed, friction force) to self-diagnose cloth attachment status. The system repurposes existing sensors and control units to detect cloth presence, avoiding the need for additional dedicated sensors and minimizing system complexity while maintaining high reliability
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
Enhances cleaning efficiency by ensuring proper attachment of the cleaning cloth, prevents damage to the robot and floor surfaces, and avoids water accumulation hazards, allowing users to quickly recognize cloth absence and maintain safe operations.
Implementation Method 1
a moving robot and a control method thereof for operating a main body while rotating a cleaning cloth by means of a motor, thereby performing wet cleaning on a floor surface with an increased friction
Data Source
AI summary
A mobile robot is configured to move a main body and rotate a cleaning cloth by means of a motor to clean a surface. A location change of the main body is analyzed to determine a traveling state of the robot. The absence of the cleaning cloth is detected and the operation of the robot is controlled based on the detected travelling state. A user is notified about the absence of the cleaning cloth.