Machinery control system
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Solution Overview
Problem
Existing management systems for air conditioners are inadequate in detecting abnormalities based on operation sounds and fail to provide useful noise level information, leading to inappropriate processing and reduced usability.
Innovation Solution
A management system comprising an air conditioner, sound input unit, operation sound analyzing unit, preprocessing unit, command extracting unit, and control unit, which separates sound data for command extraction and abnormality detection, allowing for accurate analysis of operation sounds and noise level measurement to identify and address abnormalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sound data is preprocessed to extract voice frequency components, then command extraction is improved, but operation sound detection capability deteriorates
Solution Approach 1:
The system segments the sound data processing flow into parallel branches: one branch applies voice-frequency preprocessing for command extraction, while the other branch uses the original unprocessed sound data for operation sound detection. This ensures that command extraction efficiency is improved without compromising operation sound detection accuracy.
Solution Approach 2:
The system performs preliminary preprocessing on sound data for command extraction purposes, but maintains separate access to the original sound data for operation sound analysis. This preliminary action optimizes command extraction while preserving the capability for accurate operation sound detection through the original data pathway.
2Device complexity
If only noise level measurement is performed, then sound measurement simplicity is improved, but information usefulness deteriorates
Solution Approach 1:
The patent enables the sound measurement system to perform multiple functions: it can measure overall noise levels, analyze operation sounds for abnormality detection, and extract speech commands. This multi-functionality transforms a simple noise measurement system into a comprehensive sound analysis system that provides diverse useful information while maintaining system simplicity through unified hardware architecture.
Data Source
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AI summary
A management system (1090) includes an air conditioner (1062), a sound input unit (1064), an operation sound analyzing unit (1016), a first preprocessing unit (1011), a command extracting unit (1014), and a control unit (1017). The sound input unit (1064) is provided in a room where the air conditioner is provided and obtains sound data (SD). The operation sound analyzing unit (1016) analyzes the sound data by a predetermined analysis method so as to obtain a determination result (RE) regarding whether an abnormality exists in the air conditioner or details of the abnormality. The first preprocessing unit (1011) performs first preprocessing on the sound data. The command extracting unit (1014) extracts a command (CM) of a user from the sound data that has been subjected to the first preprocessing. The control unit (1017) controls the air conditioner on the basis of the command.