Robot Cleaner Constraint Prevention Filter for Obstacle Navigation
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Solution Overview
Problem
Existing robot cleaners face challenges such as being constrained by obstacles due to increased suction power, difficulty in distinguishing between avoiding and climbing obstacles, and repeated constrainment by the same object, which reduces cleaning efficiency and area coverage.
Innovation Solution
The implementation of a robot cleaner with a constraint prevention filter and a controller that classifies obstacles as avoiding or climbing types, allowing for appropriate operation methods based on obstacle types, and storing obstacle data to avoid continuous constrainment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If suction power is increased to clean larger obstacles, then cleaning capability is improved, but the robot cleaner becomes constrained by the obstacle
Solution Approach 1:
The filter is positioned in front of the agitator to preemptively block obstacles before they can be sucked into the cleaning nozzle, preventing the robot from becoming constrained before the suction action occurs
Solution Approach 2:
The filter acts as an intermediary element between the suction inlet and the agitator, selectively allowing air particles to pass while blocking larger obstacles that could cause constraint
2Reliability
If the robot cleaner avoids all obstacles, then it prevents constrainment, but the cleaning area is reduced
Solution Approach 1:
The filter is positioned locally at the front of the agitator rather than as a complete barrier, allowing the robot to maintain suction capability while providing localized protection against obstacles
3Device complexity
If the robot cleaner does not distinguish obstacle types, then the system is simple, but it cannot optimize navigation strategy
Solution Approach 1:
The filter provides preliminary protection against all obstacles regardless of type, preventing constrainment before the robot needs to respond, while the controller subsequently classifies obstacles for optimized navigation
Data Source
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AI summary
The present invention relates to a robot cleaner having a filter for preventing the cleaner from being constrained by an obstacle. The robot cleaner, according to the present invention, comprises a constraint prevention filter arranged so as to face the front with respect to an agitator, and thus the robot cleaner may be prevented from being constrained as a result of an obstacle being stuck on a cleaning nozzle. In addition, the present invention relates to a depth sensor control system enabling the depth of an object being measured to be accurately measured by controlling the amount of light received by a sensor. The depth sensor control system, according to the present invention, measures, at a light-receiving part, the intensity and frequency of an infrared (IR) ray reflected from an object being measured, and controls the amount of light on the basis of a histogram created on the basis of the measurement, and thus enables depth information of an object to be accurately measured without using separate additional equipment.