Gas Rectification With Spatial Absorption for Component Detection
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Solution Overview
Problem
Existing gas measuring devices require multiple odor sensors corresponding to different molecular weights of gas components, complicating their configuration when dealing with gases composed of multiple components.
Innovation Solution
A gas measuring device and system that utilizes a gas rectification unit, such as a filter with parallel slits, to control the traveling directions and speeds of gas molecules based on their molecular weights, allowing them to be absorbed at specific positions in a gas sensor, which is made of materials like silicon or aluminum that do not react specifically with gas molecules, and a sensitive film to detect absorption positions and amounts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple odor sensors corresponding to different molecular weights are used to detect gas components, then the measurement capability for different gas components is improved, but the device complexity increases
Solution Approach 1:
The detection function is segmented between the rectification unit (which separates gas molecules by molecular weight) and the single sensor (which detects all molecules). The rectification unit divides the gas mixture into spatial zones corresponding to different molecular weights, allowing one sensor to perform multiple detection functions through spatial segmentation.
Solution Approach 2:
The rectification unit acts as an intermediary between the gas sample and the sensor. It preprocesses the gas by separating molecules based on molecular weight before they reach the sensor, enabling the sensor to distinguish different gas components without requiring multiple specialized sensors.
2Measurement precision
If a gas rectification unit with multiple slit filters is used to separate gas molecules by molecular weight, then the gas component separation capability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
Different regions of the filter plate have different slit configurations (different numbers, widths, or patterns of slits) to create local quality variations. This allows the single filter plate to perform multiple separation functions for different molecular weight ranges without requiring multiple separate filter components.
Solution Approach 2:
Multiple slit filters with different separation characteristics are merged into a single integrated filter plate. Instead of using separate filters for different molecular weight ranges, the invention combines them into one component with multiple slit patterns, simplifying the overall device structure and manufacturing.
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 simpler configuration for measuring gas components by specifying them based on absorption positions and amounts without the need for multiple odor sensors, while maintaining rectification performance and detection accuracy.
Implementation Method 1
the traveling directions and the traveling speeds of the gas molecules are controlled by the gas rectification unit, based on the molecular weights of the gas molecules
Implementation Method 2
The gas molecules controlled in the traveling directions and the traveling speeds reach different positions of the gas sensor based on the molecular weights, and are absorbed to the gas sensor
Data Source
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AI summary
A gas measuring device includes: a gas rectification unit configured to rectify gas to control traveling directions and traveling speeds of gas molecules based on molecular weights of the gas molecules; and a gas sensor configured to absorb the gas molecules of the gas rectified by the gas rectification unit, and to detect absorption positions and absorption amounts.