Element Analysis Zero-Point Correction from Rising Blank Signals
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Solution Overview
Problem
Conventional element analysis methods require a substantial waiting period for stabilization of gas generation from the crucible, leading to prolonged analysis times and decreased accuracy due to fluctuating zero-point corrections.
Innovation Solution
An element analysis method and device that sets zero-point correction based on measurement values in a transient state region, allowing immediate sample introduction and reducing waiting times by using a gradient reduction region in the measurement data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a predetermined standby time is set to wait for stabilization of gas generation from the crucible, then measurement accuracy is improved, but analysis time is prolonged
Solution Approach 1:
The patent applies preliminary action by performing a blank measurement before actual sample analysis to establish baseline data. The system pre-processes the crucible by heating it without a sample, records the transient state measurement values, and calculates zero-point correction amounts in advance. This preliminary blank measurement enables the system to skip the stabilization waiting period during actual analysis, as the correction values are already determined from the pre-acquired blank data.
Solution Approach 2:
The patent applies dynamics by transitioning from a static waiting-for-stabilization approach to a dynamic method that actively utilizes the transient state. Instead of passively waiting for the measurement value to stabilize, the system dynamically identifies the transient state region where the measurement value is rising, extracts meaningful data from this dynamic phase, and uses it for zero-point correction. This dynamic approach converts the previously problematic transient period into a useful data acquisition phase.
2Productivity
If waiting time is reduced by using transient state measurement values, then analysis time is shortened, but measurement stability deteriorates
Solution Approach 1:
The system performs preliminary blank measurements to acquire transient state data before actual analysis. By pre-processing the crucible and recording measurement values during the transient state in the blank measurement phase, the system establishes stable baseline correction values in advance. This allows the actual analysis to proceed immediately without waiting for stabilization, as the correction amounts are already determined from the pre-acquired blank data.
Solution Approach 2:
The patent applies partial action by selectively using only the transient state region of the measurement curve for zero-point correction, rather than waiting for complete stabilization. The system identifies and extracts data from the specific transient phase where the measurement value is rising, discarding the need to wait for the stable plateau region. This partial utilization of the measurement process achieves correction without full stabilization.
3Loss of time
If zero-point correction is calculated during transient state, then time is saved, but correction accuracy may fluctuate
Solution Approach 1:
The system performs preliminary blank measurements to establish baseline correction values before actual sample analysis. During this preliminary phase, the crucible is heated without a sample, and the transient state measurement values are recorded and processed to calculate zero-point correction amounts. These pre-calculated correction values are then applied during actual analysis, eliminating the need to wait for stabilization and ensuring consistent correction accuracy across multiple analyses.
Solution Approach 2:
The patent applies feedback by using the blank measurement data to determine correction amounts that are then applied to subsequent sample measurements. The system measures the transient state values during blank measurement, calculates the appropriate correction based on this feedback data, and uses this correction to adjust actual sample analysis results. This feedback mechanism ensures that correction values are empirically derived from actual instrument behavior rather than theoretical assumptions.
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
Significantly shortens analysis time while maintaining accuracy by setting zero-point correction using measurement values in the transient state region, reducing variations and electrical noise influence.
Implementation Method 1
hold a graphite crucible containing a sample with a pair of electrodes in a heating furnace to heat the crucible and the sample by applying an electric current directly to the crucible
Implementation Method 2
concentration of various components is measured by an analysis mechanism including a non-dispersive infrared gas analyzer (NDIR)
Implementation Method 3
concentration of various components is measured by an analysis mechanism including a thermal conductivity detector (TCD)
Data Source
AI summary
An element analysis method is capable of maintaining accuracy of zero-point correction equivalent to that in the related art while shortening the time required for element analysis. The method includes heating a sample placed in a crucible in a heating furnace, and measuring an amount of an element contained in a gas discharged from the heating furnace by an analysis mechanism to analyze the element contained in the sample. The method includes: a blank measurement step of measuring the amount of the element contained in the gas discharged from the heating furnace when only the crucible is heated; and a step of setting an amount of zero-point correction based on a measurement value in a transient state region where the measurement value rises in blank data obtained in the blank measurement step.