Robot Cleaner Suction Force Control Based on Floor Load Detection
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Solution Overview
Problem
Robot cleaners face challenges in efficiently controlling suction force and traveling routes to optimize cleaning time and accuracy, particularly in distinguishing between soft and hard floors, leading to increased battery consumption and reduced reliability in floor state detection.
Innovation Solution
A robot cleaner with a controller that determines floor state by combining load data from wheels and brushes with acceleration information, adjusting suction force and traveling routes accordingly, and includes sensors to detect RPM, duty ratio, and current to differentiate between floor types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If suction force is increased to improve cleaning efficiency on soft floors, then cleaning effectiveness improves, but battery consumption increases
Solution Approach 1:
The suction force is dynamically adjusted based on real-time floor state detection. The controller automatically increases suction force when soft floors are detected and decreases it on hard floors, optimizing cleaning effectiveness while minimizing energy consumption throughout the cleaning cycle
Solution Approach 2:
The system changes the suction force parameter according to the detected floor type. By detecting floor characteristics through wheel load sensors and adjusting the suction parameter accordingly, the system achieves adaptive cleaning that balances effectiveness and energy efficiency
2Device complexity
If floor state detection relies on single sensor type, then device complexity is reduced, but measurement precision and reliability decrease
Solution Approach 1:
The system merges multiple detection approaches by combining wheel load sensor data with motor current monitoring. This multi-source detection method improves floor state recognition accuracy while maintaining relatively simple device structure through the integration of existing components
Data Source
AI summary
A cleaner and a method for controlling the same. The cleaner includes a brush module comprising a brush configured to scatter foreign substances on a floor, and a brush motor configured to rotate the brush. The cleaner includes a suction module configured to suction the foreign substances; a sensor configured to detect a load applied to the brush; and a controller configured to control suction force of the suction module based on the load detected by the sensor.