Multi-Sensor Gas Identification for Ventilation Control
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Solution Overview
Problem
Existing gas sensors, particularly semiconductor type sensors, struggle to distinguish between different gas types due to the oxidation or reduction of multiple gases, measuring only concentration without differentiation.
Innovation Solution
An electronic apparatus equipped with multiple gas sensors of different types outputs sensing values, a processor determines gas type by analyzing the unique patterns of these values, and a storage stores reference information to identify the gas type based on the ratios of these values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a semiconductor type gas sensor is used to measure gas concentration, then the sensing capability is improved, but the ability to distinguish gas types deteriorates
Solution Approach 1:
The patent divides the gas sensing task into multiple independent sensing channels by using different gas sensor types (semiconductor sensor, electrochemical sensor, infrared sensor), each sensitive to different gas properties. This segmentation allows the system to capture multiple characteristics of the target gas simultaneously, enabling both concentration measurement and gas type identification.
2Loss of information
If multiple gas sensors are used to determine gas type, then the gas type identification capability is improved, but the device complexity increases
Solution Approach 1:
The patent makes the gas sensing system multi-functional by equipping it with multiple sensor types that can detect different gas properties (electrical resistance, electrochemical reaction, infrared absorption). This universal sensing capability allows a single system to perform both concentration measurement and gas type identification without requiring separate dedicated devices.
Solution Approach 2:
The patent introduces a processor as an intermediary that receives sensing values from multiple sensors and performs ratio calculations to determine gas type. This intermediary component synthesizes information from different sensors and compares it with reference information, resolving the complexity of direct multi-sensor integration while enabling accurate gas type identification.
3Measurement precision
If reference information storage is implemented for gas type determination, then the accuracy of gas type identification is improved, but the information processing complexity increases
Solution Approach 1:
The patent performs preliminary action by pre-storing reference information (ratio relationships between sensing values for different gas types) in a database before actual gas detection. This pre-prepared reference data enables the processor to quickly identify gas types by simple comparison with measured ratios, avoiding complex real-time analysis and reducing processing complexity during operation.
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
Accurately identifies gas types and concentrations, enabling controlled fan operation, communication with other devices, and providing user interfaces for safety and ventilation adjustments.
Implementation Method 1
the semiconductor type gas sensor measures the amount of gas by using the degree of change of the resistance value as the material to be measured, which is adsorbed on the surface is oxidized or reduced
Implementation Method 2
the semiconductor type gas sensor measures the amount of gas by using the degree of change of the resistance value as the material to be measured, which is adsorbed on the surface is oxidized or reduced
Implementation Method 3
the semiconductor type gas sensor measures the amount of gas by using the degree of change of the resistance value as the material to be measured, which is adsorbed on the surface is oxidized or reduced
Data Source
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AI summary
An electronic apparatus is provided. The electronic apparatus according to an embodiment includes a plurality of different types of gas sensors configured to output sensing values based on sensing a gas, and a processor configured to determine a gas type corresponding to a plurality of sensing values respectively output from the plurality of different types of gas sensors.