Window-Cleaning Robot Vacuum Feedback to Prevent Adhesion Loss
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Solution Overview
Problem
Existing autonomous planar surface cleaning robots are not cost-effective, lightweight, or easy to use for household purposes, and lack a feedback control mechanism to sense and respond to dangerous conditions in real-time while cleaning vertical surfaces.
Innovation Solution
The development of an autonomous planar surface cleaning robot with a main body, a driving mechanism, a vacuum source, and a control unit that includes a vacuum sensor to detect changes in vacuum pressure, allowing the robot to adjust its direction and avoid dangerous situations, such as falling off a vertical surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If autonomous cleaning robots are designed for household use, then cost and weight should be reduced, but safety and reliability may be compromised
Solution Approach 1:
The patent implements a feedback control mechanism using vacuum sensors that continuously monitor vacuum pressure levels and provide real-time feedback to the control unit. When the sensor detects vacuum pressure below a predetermined threshold, the control unit automatically triggers an alarm and stops the driving mechanism, preventing the robot from falling. This feedback system ensures safety without requiring complex expensive components, making it suitable for household use.
2Productivity
If the robot moves autonomously over vertical surfaces, then cleaning efficiency is improved, but the risk of falling increases
Solution Approach 1:
The patent employs a preliminary action principle by implementing a preventive safety system that monitors vacuum pressure before the robot actually falls. The vacuum sensor continuously detects changes in vacuum pressure, and when the pressure drops below the predetermined threshold (indicating potential loss of adhesion), the control unit proactively stops the driving mechanism and activates an alarm. This prevents the harmful event (falling) before it occurs, allowing the robot to operate autonomously with reduced risk.
3Reliability
If the robot includes safety feedback mechanisms, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements a feedback control mechanism using vacuum sensors that continuously monitor vacuum pressure levels and provide real-time feedback to the control unit. When the sensor detects vacuum pressure below a predetermined threshold, the control unit automatically triggers an alarm and stops the driving mechanism, preventing the robot from falling. This feedback system ensures safety without requiring complex expensive components, making it suitable for household use.
Solution Approach 2:
The safety system operates autonomously without requiring external monitoring or intervention. The vacuum sensor automatically detects vacuum pressure changes, the control unit independently processes the sensor signals, and the system self-corrects by stopping the driving mechanism and activating the alarm when thresholds are breached. This self-service capability maintains high reliability while minimizing system complexity.
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 robot effectively cleans vertical surfaces like windows while ensuring safety by responding to changes in vacuum pressure, preventing accidents and providing a convenient, cost-effective solution for household use.
Implementation Method 1
autonomous cleaning robots that suction to vertical planar surfaces such as a window pane using negative air pressure, e.g., vacuum
Data Source
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AI summary
Autonomous planar surface cleaning robots are disclosed. The robot includes a main body having a bottom portion defining an outer portion defining a surface area about a perimeter thereof and an inner portion defining a cavity formed within the outer portion. The main body supports a driving mechanism, a vacuum source, a vacuum sensor, and a control unit. The vacuum source, cavity, and vacuum sensor are in fluid communication. The control unit is electrically coupled to the driving mechanism, the vacuum source, and the vacuum sensor, and is configured to control the robot to turn direction when the control unit receives a signal from the vacuum sensor indicating that a degree of vacuum pressure within the cavity is below a predetermined vacuum pressure. Also disclosed is robot that includes multiple vacuum sources. Also disclosed is an apparatus that includes a connector pole.