Gas Rectification Sensing for Multi-Component Gas Measurement
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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 containing multiple components.
Innovation Solution
A gas measuring device and system that utilizes a gas rectification unit to control the traveling directions and speeds of gas molecules based on their molecular weights, combined with a gas sensor to detect absorption positions and amounts, allowing for simpler configuration and component analysis.
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 measurement precision is improved, but device complexity increases
Solution Approach 1:
The gas rectification unit is divided into multiple channels, each containing rectification elements with different pore sizes. This segmentation allows different gas molecules to be separated based on their ability to pass through specific pore sizes, enabling component detection without requiring multiple different sensor types.
Solution Approach 2:
The rectification elements act as an intermediary between the gas sample and the sensor. They pre-separate and organize gas molecules by size before detection, allowing a single sensor to effectively detect multiple gas components that would otherwise require multiple specialized sensors.
2Device complexity
If a single gas sensor is used to detect multiple gas components, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The rectification elements perform preliminary separation of gas molecules based on size before they reach the sensor. This pre-processing step organizes the gas components in a predictable pattern, allowing the single sensor to accurately distinguish between different components based on their absorption positions and timing.
Solution Approach 2:
The system changes the physical parameters of gas molecules (their spatial distribution and temporal arrival patterns) through the rectification process. By transforming the gas mixture into a structured sequence of molecular arrivals at the sensor, the system enables precise component identification using a single sensor.
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 measurement of gas components with a simpler configuration by controlling molecular flow and detection, reducing the need for multiple sensors.
Implementation Method 1
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
Implementation Method 2
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
Data Source
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.