Autonomous Cleaning Device Gap Detection for Obstacle Avoidance
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Solution Overview
Problem
Existing autonomous cleaning devices fail to accurately detect gap information in obstacles, leading to ineffective obstacle avoidance and reduced coverage area during cleaning operations.
Innovation Solution
The autonomous cleaning device employs a combination of detection sensors, including ToF and LDS sensors, to obtain reflection data from obstacles at different positions and time points, allowing the controller to determine the presence and characteristics of gaps, thereby controlling the device's movement to effectively avoid obstacles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the autonomous cleaning device uses obstacle detection sensors to detect obstacles, then the device can identify obstacles in front of the traveling path, but the device fails to accurately obtain gap information and cannot effectively avoid obstacles
Solution Approach 1:
The patent transitions from two-dimensional obstacle detection (presence/absence) to three-dimensional gap information detection (width, height, depth) by using multiple detection sensors positioned at different locations. The first detection sensor detects obstacle front surfaces while the second detection sensor detects obstacle rear surfaces or gaps, enabling the device to measure gap dimensions in multiple spatial dimensions and make informed navigation decisions.
2Reliability
If the autonomous cleaning device avoids all detected obstacles, then the device can prevent collisions, but the coverage area during cleaning operations is reduced
Solution Approach 1:
The patent applies different avoidance strategies to different types of obstacles based on their local characteristics. For passable gaps (where gap width and height exceed the device dimensions), the device continues cleaning without avoidance. For impassable obstacles, the device executes avoidance maneuvers. This localized quality-based decision-making optimizes both collision prevention and cleaning coverage by avoiding unnecessary detours.
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 enables accurate measurement of passable gaps, preventing the device from entering impassable spaces and ensuring maximum indoor cleaning coverage by effectively avoiding obstacles.
Implementation Method 1
a plurality of detection sensors configured to transmit detection signals and receive reflection data, and the reflection data comprises the detection signals reflected by an obstacle
Data Source
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AI summary
An autonomous cleaning device, a method of travel control thereof, and a storage medium. The device includes a body (100), and a cleaning assembly (300), a driving assembly, a plurality of detection sensors and a controller on the body (100). The detection sensors are configured to transmit detection signals and receive reflection data of the detection signals reflected by an obstacle. The controller is configured to obtain reflection data reflected by the obstacle and received by the plurality of detection sensors, determine whether the obstacle has a gap according to the reflection data received by the detection sensors, and in response to the obstacle having the gap, control the autonomous cleaning device to travel according to the reflection data at different time points and basic information of the autonomous cleaning device.