Robot cleaner and controlling method thereof
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Solution Overview
Problem
Robot cleaners face inefficiencies in cleaning performance and increased battery consumption due to repetitive obstacle avoidance maneuvers, which hinder effective cleaning and movement within a space.
Innovation Solution
A robot cleaner design featuring a rotatable body unit relative to a brush unit, equipped with a redirection device and sensors, allowing for independent rotation of the body unit to change driving directions and avoid obstacles without rotating the brush unit, thereby improving movement freedom and cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the robot cleaner uses a fixed body structure for obstacle avoidance, then the structure is simple, but the cleaning efficiency decreases due to repetitive maneuvers
Solution Approach 1:
The robot cleaner is divided into two independent rotatable units: a brush unit and a body unit. The body unit can rotate independently relative to the brush unit, allowing the driving direction to be changed without rotating the brush unit. This segmentation enables more flexible obstacle avoidance maneuvers while maintaining cleaning efficiency.
Solution Approach 2:
The patent introduces dynamic rotational capability to the body unit, which can rotate independently relative to the brush unit during operation. This dynamic adjustment allows the robot to adapt its driving direction flexibly when encountering obstacles, improving cleaning efficiency by avoiding repetitive maneuvers while maintaining a manageable structural complexity through controlled degrees of freedom.
2Ease of operation
If the robot cleaner rotates the entire body for obstacle avoidance, then the driving direction changes, but the brush unit rotation increases battery consumption
Solution Approach 1:
The robot cleaner is divided into two independent rotatable units: a brush unit and a body unit. The body unit can rotate independently relative to the brush unit, allowing the driving direction to be changed without rotating the brush unit. This segmentation enables more flexible obstacle avoidance maneuvers while maintaining cleaning efficiency.
Solution Approach 2:
Instead of rotating the entire robot body, only the body unit rotates partially to change driving direction while the brush unit remains stationary. This partial action approach reduces unnecessary energy consumption by limiting rotation to only the components needed for directional change, thereby extending battery life while maintaining operational flexibility.
3Device complexity
If the robot cleaner uses predetermined driving pattern for obstacle avoidance, then the control is simple, but the cleaning time increases
Solution Approach 1:
The patent introduces dynamic rotational capability to the body unit, which can rotate independently relative to the brush unit during operation. This dynamic adjustment allows the robot to adapt its driving direction flexibly when encountering obstacles, improving cleaning efficiency by avoiding repetitive maneuvers while maintaining a manageable structural complexity through controlled degrees of freedom.
Solution Approach 2:
The independent rotation mechanism provides feedback capability where the body unit's rotational position can be sensed and used to adjust subsequent cleaning operations. This allows the control system to optimize cleaning paths based on actual obstacle positions and body orientation, reducing unnecessary movements and cleaning time while keeping control logic relatively simple through sensor-based feedback loops.
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 performance and reduces battery consumption by allowing the robot cleaner to efficiently navigate around obstacles with improved movement flexibility and optimized cleaning paths.
Implementation Method 1
a power transmission member which moves along the rotation guide by the power transmitted from the rotation driving source and rotates the body unit with respect to the brush unit
Implementation Method 2
a brush unit having a suction flow path; a body unit coupled with the brush unit to be rotatable relative to the brush unit
Data Source
AI summary
Embodiments of the disclosure relate to a robot cleaner and a controlling method thereof, and more particularly, to a robot cleaner and a traveling algorithm of a robot cleaner having an improved structure. A robot cleaner of the disclosure includes a brush unit having a suction flow path, a body unit configured to have a driving device, and be coupled to the brush unit to be rotatable with respect to the brush unit and a redirection device configured to rotate the body unit relative to the brush unit, and the redirection device includes a rotation guide extending along an inner circumferential surface of the brush unit, a rotation driving source disposed in the body unit and generating power, and a power transmission member which moves along the rotation guide by the power transmitted from the rotation driving source and rotates the body unit with respect to the brush unit.