Autonomous cleaning device
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Solution Overview
Problem
Current autonomous cleaning devices, such as sweeping and mopping robots, are limited in their ability to perform integrated sweeping and mopping efficiently, often requiring multiple devices and struggling with adjusting heights and navigating complex surfaces, leading to reduced cleaning effectiveness and efficiency, especially on floors with multiple types of stains and obstacles.
Innovation Solution
An autonomous cleaning device with a mobile platform and a dual cleaning module that includes both dry and wet cleaning capabilities, featuring a lifting structure to adjust the cleaning head's position and a reciprocating movement mechanism for enhanced cleaning, along with a method for the robot to escape trapped states by detecting and avoiding obstacles using surface media sensors and room maps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a sweeping robot and a mopping robot are combined into one integrated device, then the occupied space is reduced, but the cleaning efficiency and effectiveness deteriorate because the mop can only move along a single trajectory without reciprocating motion
Solution Approach 1:
The cleaning head is designed with reciprocating motion capability, allowing it to dynamically change its movement pattern from simple linear motion to back-and-forth reciprocating motion. This dynamic movement enhances the cleaning effect by repeatedly passing over the same area, thereby resolving the contradiction between integrated design and cleaning efficiency.
Solution Approach 2:
The cleaning head performs periodic reciprocating motion, moving forward and backward along the cleaning surface in a cyclic manner. This periodic action allows the mop to clean the same area multiple times, significantly improving cleaning effectiveness while maintaining the integrated design of the device.
2Reliability
If the cleaning components are fixed at a constant height and tightly attached to the cleaning surface, then the cleaning effect is maintained, but the device cannot move freely and experiences high resistance when encountering obstacles or changing surfaces
Solution Approach 1:
The height of the cleaning component is made adjustable rather than fixed. The lifting structure allows the cleaning head to be raised or lowered dynamically, enabling the device to adapt to different cleaning surfaces and obstacles. This resolves the contradiction by allowing the cleaning head to maintain close contact with the surface during cleaning while being able to lift when encountering obstacles.
Solution Approach 2:
The height parameter of the cleaning component is made variable through the lifting structure. By changing the height parameter, the device can switch between tight attachment mode for effective cleaning and elevated mode for obstacle negotiation, thereby resolving the contradiction between cleaning reliability and mobility.
3Device complexity
If the cleaning head moves only once along a trajectory, then the device structure is simple, but the mopping effect is greatly reduced especially on floors with multiple types of stains
Solution Approach 1:
The cleaning head performs periodic reciprocating motion, moving forward and backward along the cleaning trajectory. This periodic back-and-forth movement allows the same area to be cleaned multiple times, significantly improving the mopping effect on floors with multiple types of stains while maintaining relatively simple device structure.
Solution Approach 2:
The cleaning head is equipped with reciprocating motion mechanism that enables dynamic back-and-forth movement. This dynamic motion pattern allows repeated cleaning of the same area, enhancing the mopping effect without requiring complex device architecture.
Data Source
AI summary
An autonomous cleaning device, includes: a mobile platform, configured to move autonomously on a cleaning surface; and a cleaning module, disposed on the mobile platform and including: a wet cleaning module, configured to clean at least part of the cleaning surface in a wet cleaning mode; and a lifting structure, connected to the wet cleaning module and configured to enable the wet cleaning module to move upward or downward with respect to the mobile platform; wherein the wet cleaning module includes: a cleaning head configured to clean the cleaning surface; and a driving unit configured to drive the cleaning head to conduct reciprocating movement on a target surface which indicates a part of the cleaning surface.