NDIR Gas Analyzer Detector with N-Dimensional Calibration Matrix
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Solution Overview
Problem
Existing non-dispersive infrared (NDIR) gas analyzers face challenges in accurately determining the concentration of a measuring gas component in the presence of transverse gases without specific preconditions being met, such as overlapping absorption regions in the gas fillings of the single-layer receivers.
Innovation Solution
A detector arrangement using an n-dimensional calibration matrix to store signal values from sensors at different concentrations of the measuring gas component and transverse gases, allowing for the determination of the measuring gas component concentration even when transverse gas concentrations are unknown, by comparing measured signal values with stored n-tuples in the calibration matrix.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a detector arrangement with multiple single-layer receivers is used to compensate transverse gas effects, then measurement precision is improved, but device complexity increases due to the need for n-dimensional calibration matrices and multiple sensors
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing n-dimensional calibration matrices that contain compensation data for various transverse gas concentrations before actual measurement. The evaluation device uses these pre-prepared matrices to quickly determine measuring gas concentrations without performing complex real-time calculations, thus improving measurement precision while managing device complexity through offline preparation.
2Measurement precision
If the absorption regions of gas fillings in single-layer receivers are made to overlap, then transverse gas compensation is achieved, but this requires specific preconditions that limit adaptability
Solution Approach 1:
The patent applies parameter changes by using multiple single-layer receivers with different gas fillings and varying absorption characteristics. Instead of requiring overlapping absorption regions, the system measures signals from multiple receivers with different parameters (gas types, concentrations) and uses n-dimensional calibration matrices to mathematically compensate for transverse gas effects, thereby achieving both precision and adaptability.
3Reliability
If multiple single-layer receivers with different gas fillings are used, then transverse gas effects can be compensated, but the device complexity and calibration requirements increase
Solution Approach 1:
The patent applies mechanics substitution by replacing complex mechanical or optical compensation mechanisms with a mathematical evaluation approach. Instead of using sophisticated hardware to physically separate or filter transverse gas effects, the system uses pressure-sensitive or flow-sensitive sensors combined with n-dimensional calibration matrices to mathematically compensate for transverse gas interference, simplifying the physical device 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
Enables accurate compensation of transverse gas effects on the measuring result without requiring specific preconditions, allowing for precise determination of the measuring gas component concentration across varying transverse gas concentrations, and can also identify potential errors or disruptions in the measurement process.
Implementation Method 1
non-dispersive infrared (NDIR) gas analyzer for detecting a measuring gas component in a gas mixture
Data Source
AI summary
A detector arrangement for detection of a measuring gas component in a gas mixture is provided. The arrangement includes a gas analyzer, a first single-layer receiver and a further single-layer receiver, the first single-layer receiver containing the measuring gas component and the further single-layer receiver containing a transverse gas. A concentration of the measuring gas component in the gas mixture is determined from signals delivered by sensors of the single-layer receivers. An evaluating device includes an n-dimensional calibration matrix for obtaining matrix signal values. Signal values of different known concentrations of the measuring gas component in the presence of different known transverse gas concentrations are stored as n-tubules in the evaluating device. The concentration of the measuring gas component in the presence of unknown transverse gas concentrations is determined by comparing n-tuples of signal values thereby obtained with the n-tuples of signal values stored in the calibration matrix.