Factory Noise Monitoring Using Machine Operation Correlation
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Solution Overview
Problem
Existing noise monitoring devices in factories face difficulties in identifying the source of noise generation, especially when noise is intermittent and affects multiple machines, making it challenging to determine the cause of abnormalities.
Innovation Solution
A noise monitoring device that acquires and displays noise and operation information from multiple machines, highlighting changes near the noise generation time, using a database to prioritize and extract operation information likely to be the cause of noise, and providing maintenance information for effective countermeasures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If noise monitoring is performed in a factory with multiple machines, then noise detection capability is improved, but difficulty in identifying noise generation source increases
Solution Approach 1:
The patent segments the factory environment into multiple monitoring zones, each associated with specific machines. By dividing the monitoring scope into manageable segments and tracking noise sources within each segment, the system makes it easier to identify which machine or area is generating noise, rather than treating the entire factory as a single monitoring unit.
Solution Approach 2:
The system implements feedback by continuously monitoring noise levels and immediately displaying information about noise generation sources when abnormal noise is detected. The display unit provides real-time feedback showing which machine is likely generating noise, enabling operators to quickly respond to and identify noise sources without manual investigation.
2Measurement precision
If operation information of all machines is continuously monitored, then noise source identification accuracy is improved, but information processing complexity increases
Solution Approach 1:
The patent extracts only the relevant operation information from the continuous data stream of all machines. When noise is detected, the system extracts and displays specifically the operation information of machines that are likely noise sources, rather than processing and displaying all operation data from every machine, thus reducing information processing complexity while maintaining identification accuracy.
Solution Approach 2:
The system performs preliminary actions by pre-establishing the relationship between machines and their operational parameters. When noise is detected, the already-prepared operation information can be quickly retrieved and displayed without requiring complex real-time analysis, reducing the processing burden during actual noise events.
3Loss of information
If detailed operation information is displayed for all machines, then noise cause analysis capability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent applies local quality by displaying detailed operation information selectively for only those machines that are identified as potential noise sources, rather than uniformly displaying information for all machines. This localized approach provides comprehensive analysis capability for relevant machines while keeping the overall display interface simple and easy to operate.
Solution Approach 2:
The system performs partial action by displaying operation information for a limited subset of machines (those with high probability of being noise sources) rather than all machines. This partial display approach provides sufficient information for noise cause analysis while maintaining ease of operation through reduced information overload.
Data Source
AI summary
A noise monitoring device capable of easily estimating a noise generation source in a factory is connected for communication with a plurality of machines in the factory. The noise monitoring device is provided with a noise information acquisition unit configured to acquire noise information including the time of generation of noise if the noise is generated in the machines, an operation information acquisition unit configured to continually acquire operation information of all the machines, a determination unit configured to extract the operation information at a point in time near the noise generation time, and a display unit configured to display the noise information and the operation information of all the machines at the point in time near the noise generation time.