Method and apparatus for identifying brush type, cleaning device and storage medium
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Solution Overview
Problem
Existing cleaning devices face low accuracy in automatically identifying brush types, leading to potential safety hazards due to differing locked-rotor currents and fault protection requirements.
Innovation Solution
A method and apparatus that acquire a detection voltage less than the starting voltage of a brush motor, determine the first impedance, and match it to stored correspondence to identify the brush type, improving accuracy and safety by determining motor control parameters for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automatic brush type identification is implemented using existing schemes, then brush type identification can be performed automatically, but the identification accuracy is low leading to safety hazards
Solution Approach 1:
The patent changes the detection parameter from voltage-based or current-based methods to impedance-based detection. By measuring the impedance of the brush motor at a specific detection voltage (below starting voltage), the system achieves more accurate brush type identification. Different brush types exhibit distinct impedance characteristics, enabling precise differentiation and improving identification accuracy while maintaining automation.
2Reliability
If detection voltage is set below starting voltage for safety, then motor protection is improved, but the ability to accurately distinguish brush types is reduced
Solution Approach 1:
The patent replaces traditional mechanical or high-voltage electrical detection methods with impedance-based detection using low detection voltage. By measuring the electrical impedance of the brush motor at a safe low voltage level, the system can accurately identify brush types without applying high voltage that could damage the motor or create safety hazards. This substitution maintains motor protection while achieving accurate identification.
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 the accuracy of brush type identification and safety by determining the brush type based on impedance, allowing for precise motor control and protection settings.
Implementation Method 1
acquiring a first impedance of the brush motor, in response to inputting the detection voltage to the brush motor; and determining a brush type corresponding to the brush motor based on the first impedance
Data Source
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AI summary
A method for identifying a brush type of a cleaning device includes: acquiring a detection voltage of a brush motor, the detection voltage being less than a starting voltage of the brush motor; acquiring a first impedance of the brush motor, in response to inputting the detection voltage to the brush motor; and determining a brush type corresponding to the brush motor based on the first impedance and a correspondence between impedances and brush types stored.