Robotic vacuum cleaner and control method thereof
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Solution Overview
Problem
Existing robotic vacuum cleaners face challenges in accurately determining the coupling state of the cleaning member due to noise generated in different environments, which can lead to errors in assessing whether the cleaning member is properly coupled.
Innovation Solution
The robotic vacuum cleaner incorporates an optical sensor that emits light to a cleaning member with a reflective pattern and detects the light reflection amount. By comparing the detected light reflection pattern changes, the system determines the coupling state of the cleaning member, enhancing accuracy and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed preset value is used to determine coupling state, then the determination process is simple, but errors occur due to environmental noise and surface material changes
Solution Approach 1:
The cleaning member incorporates a reflective pattern with specific light reflectance properties that differ from the surrounding surface. The optical sensor detects changes in light reflection amount caused by this pattern, enabling reliable coupling state determination that is insensitive to environmental noise and surface material variations.
2Reliability
If environmental noise is reduced through better sensing, then determination accuracy improves, but device complexity and cost increase
Solution Approach 1:
Instead of improving the overall sensing system, the invention applies a localized solution by adding a reflective pattern specifically to the cleaning member. This pattern creates a distinct light reflection signature that is easy to detect and differentiate from environmental noise, maintaining simple sensor hardware while achieving high determination accuracy.
3Measurement precision
If a reflective pattern is added to the cleaning member, then coupling state determination accuracy improves, but manufacturing complexity increases
Solution Approach 1:
The reflective pattern can be implemented through various manufacturing methods including printing, coating, or integrating reflective materials during the cleaning member fabrication process. These methods are compatible with existing manufacturing techniques, allowing the pattern to be added without significantly increasing production complexity or cost.
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
This solution improves the accuracy and reliability of determining the coupling state of the cleaning member by detecting pattern changes in the light reflection amount caused by the reflective pattern, reducing errors due to environmental noise.
Implementation Method 1
an optical sensor disposed at a position adjacent to the rotation part, emitting light toward the cleaning member, and obtaining a light reflection amount reflected by the cleaning member
Data Source
AI summary
A robotic vacuum cleaner according to an embodiment includes a main body forming an outer appearance, a rotation part rotatably disposed on a lower side of the main body, a cleaning member detachably couplable to the rotation part and having at least one reflective pattern provided on a surface thereof, and an optical sensor disposed at a position adjacent to the rotation part, emitting light toward the cleaning member, and obtaining a light reflection amount reflected by the cleaning member, and the at least one reflective pattern has a reflectance different from a remaining region of the surface not provided with reflective pattern.