Standard-moisture generator, system using the standard-moisture generator, method for detecting abnormality in standard-moisture and computer program product for detecting the abnormality
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Solution Overview
Problem
The existing methods for generating standard moisture for validating moisture sensors, particularly those using permeation tubes, face challenges in ensuring the dryer's longevity and accuracy, as the dryer's effectiveness diminishes when it accumulates water molecules, leading to inconsistent moisture generation.
Innovation Solution
A standard-moisture generator system that includes a flow controller, a dryer, a moisture cell, and a delay member, where the dryer absorbs water molecules to produce dry gas with background moisture, and the moisture cell adds object moisture, with a ball surface-acoustic-wave sensor detecting the moisture concentration and calculating a delay time based on the background moisture, ensuring proper operation of the dryer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dryer is used to absorb water molecules in the permeation tube method, then the background moisture can be controlled, but the dryer accumulates water molecules over time and stops absorbing effectively, reducing its lifespan and reliability
Solution Approach 1:
The patent introduces a delay member (tube) between the moisture cell and the sensor that creates a time delay for the moisture to reach the sensor. This preliminary action allows the system to measure the delay time and calculate the background moisture level before the dryer becomes fully saturated, enabling early detection and replacement of the dryer before it completely fails.
Solution Approach 2:
The patent implements a feedback mechanism where the system measures the delay time of moisture propagation through the delay member and uses this information to calculate the background moisture concentration. This feedback allows continuous monitoring of the dryer's performance and triggers alerts when the dryer needs replacement, maintaining reliability throughout its operational lifecycle.
2Manufacturing precision
If the dryer absorbs water molecules continuously, then the standard moisture generation accuracy is maintained, but the dryer eventually accumulates too much water and must be replaced, causing downtime
Solution Approach 1:
The delay member provides a time buffer that allows the system to monitor dryer performance in advance. By measuring the delay time and calculating background moisture levels continuously, the system can predict when the dryer will fail and schedule maintenance before complete saturation occurs, extending the effective operational duration.
Solution Approach 2:
The system performs self-diagnosis by automatically measuring the delay time and calculating background moisture levels without external intervention. This self-monitoring capability allows the system to assess its own dryer's health status and trigger maintenance protocols, reducing downtime and extending operational duration between replacements.
3Productivity
If the permeation tube operates at higher temperature to increase moisture generation rate, then productivity is improved, but water molecules accumulate faster in the dryer, reducing its effective lifespan
Solution Approach 1:
The feedback mechanism through delay time measurement and background moisture calculation allows the system to monitor the rate of water accumulation in real-time. When operating at higher temperatures for increased productivity, the system can detect the accelerated saturation rate and adjust operational parameters or schedule maintenance accordingly, optimizing the balance between productivity and dryer lifespan.
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
This system guarantees the proper functioning of the dryer connected to the permeation tube by measuring the delay time, allowing for accurate validation of moisture sensors and extending the dryer's lifespan by preventing water accumulation.
Implementation Method 1
a dryer connected to the flow controller, configured to absorb water molecules in the gas
Implementation Method 2
a sensor unit having a ball surface-acoustic-wave sensor connected to an outlet of the delay member, configured to detect the moisture concentration in the dry gas
Implementation Method 3
The polymeric material is permeable to water molecules, and therefore, the cell transmits the water molecules at a constant rate
Data Source
AI summary
A standard-moisture generator includes a flow controller configured to control a flow of a gas, a dryer connected to the flow controller, configured to absorb water molecules in the gas and to generate a dry gas having a background moisture, a moisture cell connected to the dryer, configured to add an object moisture to the dry gas, and a delay member connected to the moisture cell, configured to pass the dry gas with a delay time depending on a concentration of the background moisture in the dry gas.