Cleaning Robot Drive Wheel Locking for Charging Dock Stability
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Solution Overview
Problem
Automatic cleaning robots often disengage from charging docks during improper docking, leading to incomplete charging and disrupted cleaning operations, which deteriorates user experience.
Innovation Solution
A charging control method that includes detecting the charging status and braking the drive wheel of the cleaning robot to lock it electromagnetically during charging, and monitoring for unlocking triggers such as completion of charging or external forces to ensure proper docking and subsequent cleaning operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cleaning robot is allowed to move freely during charging, then the robot can be easily repositioned and removed from the charging dock, but the robot may accidentally disengage due to incorrect positioning or external forces, leading to incomplete charging
Solution Approach 1:
The patent applies preliminary action by locking the drive wheel before charging is complete. The control unit detects when the robot is in a charging state and proactively locks the drive wheel in advance to prevent accidental disengagement. This preliminary locking action ensures that even if positioning is incorrect or external forces act on the robot, it cannot disengage during the charging process, thus guaranteeing charging completeness while still allowing easy repositioning by unlocking when needed.
2Reliability
If the drive wheel is locked during charging to prevent disengagement, then charging completeness is ensured, but the robot cannot be repositioned or removed from the charging dock
Solution Approach 1:
The patent applies dynamics by making the drive wheel locking state changeable based on charging status. The control unit dynamically adjusts the locking state: when charging is detected, the drive wheel is locked to ensure charging completeness; when charging is complete or interrupted, the lock is released to allow repositioning or removal. This dynamic adjustment resolves the contradiction by providing both reliability during charging and ease of operation when charging is not active.
3Reliability
If the cleaning robot uses electromagnetic braking to lock the drive wheel, then the locking mechanism is simple and reliable, but the robot cannot be unlocked without external intervention
Solution Approach 1:
The patent applies self-service by enabling the control unit to automatically unlock the drive wheel based on charging status detection. When the robot completes charging or detects charging interruption, the control unit autonomously releases the electromagnetic brake without requiring external intervention. This self-service unlocking mechanism maintains simple electromagnetic braking for reliable locking while eliminating the need for complex manual or external unlocking systems.
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
Prevents accidental disengagement from charging docks, ensuring complete charging and smooth subsequent cleaning operations, thereby enhancing user experience.
Implementation Method 1
braking the cleaning robot in response to detecting that the cleaning robot is being charged, so as to lock a drive wheel of the cleaning robot
Data Source
AI summary
A charging control method, applicable to a cleaning robot, includes: detecting a charging status of the cleaning robot; braking the cleaning robot in response to detecting that the cleaning robot is being charged, so as to lock a drive wheel of the cleaning robot; monitoring an unlocking trigger operation; and unlocking the cleaning robot in response to detecting the unlocking trigger operation.