Electric Equipment Action Identification Using Power Waveform Analysis
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Solution Overview
Problem
Existing methods fail to accurately determine which control procedure an electric equipment is executing and whether it complies with predetermined parameters, leading to undetected abnormalities and affected output quality.
Innovation Solution
A method and system that measure and analyze the utility power signal using a sensor and computing controller to identify the current control procedure and trigger warnings when deviations from predetermined parameters are detected, utilizing waveform characteristics and tolerance ranges to determine the action stage and parameter compliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power consumption data is collected and analyzed to generate reference values, then energy monitoring capability is improved, but the ability to identify specific control procedures and detect abnormalities is insufficient
Solution Approach 1:
The patent transforms the monitoring approach from simple power consumption value analysis to waveform characteristic analysis. By extracting parameters such as effective value, average value, maximum value, minimum value, and standard deviation from the power waveform, the system achieves precise identification of control procedures and action stages while maintaining energy monitoring capability.
Solution Approach 2:
The patent introduces waveform characteristics as an intermediary between power consumption data and procedure identification. Instead of directly using power consumption values to determine procedure status, the system first extracts multiple waveform parameters that serve as intermediate features, then uses these features for accurate procedure and action stage identification.
2Productivity
If automatic electric equipment executes predetermined procedures, then productivity is improved, but the ability to detect operating abnormalities is insufficient
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors power waveform characteristics during procedure execution, compares them against reference values for each action stage, and generates abnormality warnings when deviations exceed thresholds. This enables real-time detection of operating abnormalities while maintaining automatic procedure execution.
Solution Approach 2:
The patent performs preliminary analysis to establish reference values for waveform characteristics under normal operating conditions for each control procedure and action stage. These reference values are prepared in advance to enable rapid comparison and abnormality detection during actual operation, ensuring reliable monitoring without affecting productivity.
3Measurement precision
If waveform characteristic analysis is performed to identify control procedures, then procedure identification accuracy is improved, but system complexity increases
Solution Approach 1:
The patent segments the power waveform analysis into distinct computational stages: first extracting basic waveform parameters (effective value, average value, maximum value, minimum value, standard deviation), then comparing these parameters against reference values for each action stage. This segmentation simplifies the overall analysis process while maintaining high identification accuracy.
Solution Approach 2:
The system uses the power waveform data itself to generate the reference values and perform the comparison analysis, without requiring external sensors or additional measurement devices. The computing controller automatically extracts features and performs identification based solely on the collected power signal, reducing system complexity.
Data Source
AI summary
A method for identifying actions of an electric equipment is provided. The method includes: measuring a utility power signal of the electric equipment during a period of time; analyzing a waveform characteristic of the utility power signal in the period of time to acquire a set of characteristic values, and identifying a current control procedure corresponding to the utility power signal from a set of control procedures according to the set of characteristic values, the current control procedure including one or more action stages whose first action stage corresponds to a first action parameter; determining whether a deviation between the waveform characteristic of the utility power signal corresponding to the first action stage and the first action parameter is within a tolerance range; triggering a warning event when the deviation between the waveform characteristic of the utility power signal and the first action parameter is outside the tolerance range.