Electrical Machine Operation Estimation From Sound Data
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Solution Overview
Problem
Existing methods for monitoring electrical performance require the installation of sensors, which may not be feasible in all environments, especially those requiring installation of measurement devices, such as sensors, to determine the operation of electrical machines.
Innovation Solution
Utilizing sound data captured near the electrical machine, combined with a digital model, to determine operation parameters such as peak frequency and slip values, allowing for the estimation of operation points and efficiency without the need for direct sensor installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If dedicated measurement devices (sensors) are installed on the electrical motor to determine operation values, then measurement precision is improved, but device complexity and installation difficulty increase
Solution Approach 1:
The patent uses sound data as an intermediary medium to indirectly determine motor operation parameters. Instead of directly measuring electrical or mechanical parameters with sensors on the motor, the system captures sound data from the motor's acoustic emissions and processes this data to derive operation values such as current, power, and efficiency, thereby avoiding direct sensor installation on the motor while maintaining measurement capability
Solution Approach 2:
The patent replaces the mechanical/electrical sensor-based measurement system with an acoustic measurement system. By substituting physical contact sensors with acoustic field-based measurement, the system eliminates the need for installing measurement devices on the motor while still achieving the goal of determining operation parameters through sound data capture and processing
2Ease of operation
If sound data capture method is used to determine operation values, then ease of operation is improved, but measurement precision may deteriorate
Solution Approach 1:
The patent makes the sound data capture system universal by using a general-purpose microphone and sound processing approach that can determine multiple operation parameters (current, power, efficiency, torque) from a single acoustic measurement source. This multi-functional capability allows the system to maintain ease of operation while providing comprehensive motor performance information through various derived metrics from the same sound data
Solution Approach 2:
The system performs preliminary action by capturing and storing sound data for later analysis, and by pre-processing the sound data to extract relevant features before final operation parameter calculation. This allows the measurement system to be simple during data collection while maintaining precision through subsequent detailed processing of the captured sound data
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
Enables the determination of electrical machine operation without the need for direct sensor installation, providing accurate estimation of operation points and efficiency through sound analysis.
Implementation Method 1
obtain sound data of the electrical machine, the sound data comprising time series of sound pressure data captured at the time the electrical machine is running
Data Source
AI summary
To obtain information on operation of an electrical machine, sound data, which includes time series of sound pressure data captured at the time the electrical machine is running at a site the electrical machine locates of the electrical machine, is obtained. Further, dentification information of the electrical machine is obtained. Using the identification information, at least one parameter value stored in a digital model of the electrical machine is obtained. Then, using at least the sound data and the at least one parameter value, at least one first value indicating operation of the electrical machine is determined and displayed.