Acoustic Cleaning Operation Detection for Real-Time Work Verification
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Solution Overview
Problem
Existing systems fail to accurately determine the actual performance of cleaning operations in vehicles or facilities like trains, aircraft, and theaters, lacking detailed information on the progress of cleaning tasks, leading to inefficiencies and increased costs due to the need for additional infrastructure.
Innovation Solution
An operation situation detection device using microphones to detect operation sounds, comparing them with stored typical sounds to determine similarity, and a determinator to confirm the performance of operations with high accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If IC cards with wireless function are used to track cleaning operators, then current positions can be grasped, but actual performance of cleaning operations cannot be verified
Solution Approach 1:
The patent replaces the mechanical/wireless card tracking system with an acoustic detection system. Microphones capture operation sounds (e.g., cleaning noises), and the system analyzes these acoustic signals to detect whether cleaning operations are actually being performed, thereby verifying operation performance rather than just tracking operator position.
2Measurement precision
If additional infrastructure is deployed to monitor cleaning operations, then operation performance can be verified, but system complexity and cost increase
Solution Approach 1:
The patent makes existing microphones in the vehicle serve multiple functions: their primary function for passenger service is combined with a secondary function for detecting cleaning operation sounds. This eliminates the need for separate dedicated monitoring infrastructure, reducing system complexity while maintaining verification capability.
Solution Approach 2:
The system uses the vehicle's existing acoustic sensing capabilities (microphones already present for other purposes) to automatically detect and verify cleaning operations. The infrastructure serves itself by utilizing existing components rather than requiring additional dedicated monitoring equipment.
3Productivity
If cleaning operation monitoring is implemented, then work efficiency can be improved, but additional infrastructure and costs are required
Solution Approach 1:
Existing microphones are utilized for dual purposes: passenger service communication and cleaning operation detection. This multi-functional approach enables work efficiency improvement through operation monitoring without requiring additional dedicated infrastructure, thereby avoiding increased costs.
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
Accurately detects the performance of cleaning operations, improving efficiency by providing real-time progress information, reducing the need for additional infrastructure, and enhancing overall work efficiency.
Implementation Method 1
at least one microphone that is provided in a chamber to detect a first operation sound which is an operation sound occurring when a predetermined operation is performed in the chamber
Data Source
AI summary
An operation situation detection device includes: at least one microphone that is provided in a chamber to detect a first operation sound which is an operation sound occurring when a predetermined operation is performed in the chamber; a memory that stores in advance a second operation sound which is a typical sound likely to occur when the operation is performed; a calculator that calculates a similarity between the first operation sound and the second operation sound; and a determinator that determines that the operation has been performed, when the similarity is a predetermined value or higher.