Integrated Temperature Sensor in Gas Reaction Carrier
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Solution Overview
Problem
Existing gas measurement systems face challenges in accurately determining the concentration of gaseous and aerosol components in gas mixtures due to temperature and moisture dependencies, which affect the optically detectable reactions and lead to reduced measurement accuracy.
Innovation Solution
Incorporating temperature-measuring and moisture-measuring elements into the reaction carrier and measuring device, allowing for real-time temperature and moisture monitoring, which are used to adapt the measurement algorithms and improve signal-to-noise ratio, and to correct concentration determinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature and moisture monitoring is added to the measuring device, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The temperature-measuring element and moisture-measuring element are integrated directly into the reaction carrier structure. The temperature-measuring element is positioned in thermal contact with the reactant, while the moisture-measuring element is arranged in the flow channel to detect gas mixture moisture. This merging approach allows simultaneous measurement of concentration, temperature, and moisture using a single integrated reaction carrier, improving measurement accuracy without proportionally increasing device complexity.
Solution Approach 2:
The reaction carrier is designed to serve multiple functions: it contains the reactant for concentration measurement, incorporates temperature sensing capability, and includes moisture detection capability. This multi-functionality allows the single reaction carrier component to perform three distinct measurement tasks, reducing the need for separate dedicated devices for each parameter and thereby managing complexity while improving overall measurement accuracy.
2Measurement precision
If temperature-adapted algorithmic filtering is applied, then signal-to-noise ratio is improved, but calculation complexity increases
Solution Approach 1:
The evaluation unit applies temperature-adapted algorithmic filtering that modifies calculation parameters based on the measured temperature value. The algorithm adjusts filtering characteristics dynamically according to temperature conditions, allowing optimal signal-to-noise ratio under varying thermal conditions. This parameter-based adaptation enables the system to maintain high measurement precision across different temperatures without requiring completely different algorithms for each condition.
Solution Approach 2:
The system uses the measured temperature as feedback to adjust the calculation algorithm in real-time. The evaluation unit receives temperature data from the temperature-measuring element and uses this information to adapt the filtering parameters of the concentration calculation. This feedback mechanism allows the algorithm to compensate for temperature-induced variations in the optically detectable reaction, improving signal-to-noise ratio while keeping the computational complexity manageable through systematic adaptation rather than complex proprietary algorithms.
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
Enhances the accuracy of concentration determination by accounting for temperature and moisture effects, optimizing the measurement method, and ensuring reliable results by adapting the flow and measurement parameters accordingly.
Implementation Method 1
the at least one temperature-measuring element may be a thermochromic substance, e.g., thermochromic plastics, liquid crystals, thermal coatings and temperature-measuring colors
Implementation Method 2
the reactant reacts with at least one of the components to be measured in the gas mixture in an optically detectable manner
Data Source
AI summary
A reaction carrier (14), a measuring device (12) and a measuring method measure a concentration of gaseous and/or aerosol components of a gas mixture. A flow channel (42), extends between two connecting elements (44) and defines a reaction chamber (46) with an optically detectable reaction material (48) that reacts a component of the gas mixture or with a reaction product of the component. The reaction carrier (14) includes a temperature-measuring element (88). The measuring device (12) includes a temperature-measuring element (90) which records a temperature of the measuring device (12) and/or of the reaction carrier (14), and a temperature-determining unit (92) which determines the temperature of the gas mixture as a function of the measurement result of the at least one temperature-measuring element (90). The measuring method includes determining a concentration of the component on the basis of an optically detectable reaction and the determined temperature of the gas mixture.