Dust Removal Determination Device for Oxygen Sensors
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Solution Overview
Problem
Oxygen concentration measurement devices in environments like cable tunnels face malfunctions due to dust adhesion on filters, leading to increased operational costs, reduced device lifespan, and frequent filter replacements, especially in high humidity conditions where dust accumulation is less likely.
Innovation Solution
A dust removal determination device that acquires humidity measurements, decides based on reference values, and generates signals for the dust removal device to apply vibration to the filter, ensuring dust is removed only when necessary, thereby reducing operational costs and extending device life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter is cleaned manually using a tool, then dust is removed from the filter, but inspection and maintenance costs increase significantly when many devices are installed or when they are not within easy reach
Solution Approach 1:
The dust removal device enables the filter to clean itself automatically without requiring manual intervention. The vibration unit generates vibrations that cause dust particles adhering to the filter to detach and fall off, allowing the filter to maintain its cleaning function autonomously.
Solution Approach 2:
The dust removal device is divided into functional modules: a vibration generation unit that produces vibrations, a transmission mechanism that conveys vibrations to the filter, and a dust collection area where detached dust particles fall. This segmentation allows for efficient automatic operation.
2Measurement precision
If the filter is cleaned at high frequency to prevent dust adhesion, then measurement accuracy is maintained, but device lifespan is reduced due to frequent operation
Solution Approach 1:
The system incorporates a dust detection mechanism that monitors the filter's dust accumulation status and triggers the vibration unit only when dust adhesion is detected or predicted. This feedback-based operation maintains measurement accuracy while minimizing unnecessary vibrations, thereby extending device lifespan.
Solution Approach 2:
Instead of continuous or high-frequency cleaning, the system employs periodic vibration cycles triggered by dust detection. The vibration unit operates intermittently based on actual dust accumulation conditions, reducing wear while maintaining measurement precision.
3Measurement precision
If the filter is cleaned at high frequency to prevent dust adhesion, then measurement accuracy is maintained, but electricity cost increases
Solution Approach 1:
The system uses dust detection feedback to control the vibration unit's operation, activating it only when dust adhesion is detected or predicted. This prevents unnecessary energy consumption while ensuring measurement accuracy is maintained through targeted cleaning cycles.
Solution Approach 2:
The system changes the operational parameters of the vibration unit based on dust accumulation conditions. Instead of operating at constant high frequency, the vibration frequency and duration are adjusted dynamically according to actual dust levels, optimizing energy efficiency while maintaining measurement precision.
4Reliability
If manual filter replacement is performed frequently, then dust adhesion is prevented, but replacement costs increase
Solution Approach 1:
The automatic dust removal system enables the filter to maintain its functionality through self-cleaning vibrations, eliminating the need for frequent manual replacements. The system monitors dust accumulation and triggers cleaning cycles autonomously, preserving filter performance without requiring human intervention for maintenance.
Solution Approach 2:
The system performs preliminary dust removal actions before dust accumulation severely impacts filter performance. By detecting early signs of dust adhesion and triggering vibrations proactively, the system prevents the need for frequent filter replacements, extending the filter's service life while maintaining reliability.
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
The system effectively prevents malfunctions by ensuring dust is removed only when it tends to adhere, thus minimizing electricity costs, reducing wear, and optimizing filter replacement cycles.
Implementation Method 1
a vibration unit that removes dust on the filter part by applying vibration to the filter part according to the acquired signal
Data Source
AI summary
A dust removal determination device (10) includes: a measurement value acquisition part (112) that acquires a plurality of measurement values at predetermined time intervals of humidity in a structure including an oxygen concentration measurement device (40); a decision part (113) that decides whether or not the humidity is less than a reference value by using the measurement values; and a signal generation part (114) that generates a signal instructing removal of dirt on the oxygen concentration measurement device (40) according to the decision of the decision part (113).