Home Appliance Motor Frequency Coordination to Reduce Beat Noise
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Solution Overview
Problem
When multiple home appliances with motors operate at similar frequencies, they can cause a beat phenomenon resulting in loud noise due to interfering sound waves.
Innovation Solution
A home appliance controls its motor operation by adjusting the frequency to differ from that of adjacent appliances, using a processor to identify and acquire operating frequency information through communication or sound detection, and adjust the motor's frequency to prevent noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If multiple home appliances operate at similar frequencies, then energy efficiency is improved, but noise increases due to beat phenomenon
Solution Approach 1:
The patent changes the operating frequency parameter of the motor to differ from that of other home appliances. The control unit adjusts the motor's operating frequency based on detected frequencies of other appliances, thereby avoiding the beat phenomenon and reducing noise while maintaining energy efficiency.
Solution Approach 2:
The patent implements a feedback mechanism where the control unit detects the operating frequencies of other home appliances using a microphone or communication unit, compares these frequencies with the motor's operating frequency, and adjusts the motor frequency accordingly to prevent noise generation while maintaining efficient operation.
2Object-generated harmful factors
If motor operating frequency is adjusted to avoid beat phenomenon, then noise is reduced, but control complexity increases
Solution Approach 1:
The control unit autonomously detects the operating frequencies of other home appliances and automatically adjusts the motor's operating frequency without requiring user intervention. The system self-regulates to avoid beat phenomenon, reducing noise while managing control complexity internally.
Solution Approach 2:
The patent modifies the motor's operating frequency parameter dynamically based on the detected environmental frequencies. By implementing frequency detection and adjustment mechanisms, the system reduces noise through parameter optimization while the added control complexity is managed through automated frequency synchronization algorithms.
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 the beat phenomenon by ensuring the motor operates at a frequency that differs sufficiently from adjacent appliances, reducing loud noise and improving user experience.
Implementation Method 1
detecting a sound generated while driving the motor of another home appliance; acquiring operating frequency information on the motor included in the other home appliance from sound data corresponding to the detected sound
Data Source
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AI summary
A method for controlling a home appliance including a motor is provided. The control method includes acquiring, from another appliance, operating frequency information on a motor included in the another home appliance, identifying an operating frequency of the motor of the home appliance which differs from an operating frequency of the motor of the another home appliance based on the acquired operating frequency information, and controlling an operation of the motor of the home appliance based on the identified operating frequency.