Electronic Nose Gas Exchange for Low-Power Equilibrium Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic noses require continuous calibration and gas identification processes, consuming significant power and reducing operational lifespan due to constant gas monitoring, even when environmental gas conditions remain unchanged.
Innovation Solution
An electronic nose with a gas exchange system that operates in monitoring and identification modes, using filtered and unfiltered gas intake channels to optimize power consumption and extend the lifespan of the evacuation unit by reducing unnecessary operation of the evacuation unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous gas monitoring and sensor calibration are performed, then real-time gas detection capability is improved, but power consumption increases and operational lifespan decreases
Solution Approach 1:
The patent implements periodic action by alternating between monitoring mode (evacuation unit operating, gas flowing through chamber) and identification mode (evacuation unit stopped, gas static in chamber). The system performs sensor calibration and gas identification only when needed, rather than continuously, thereby reducing power consumption while maintaining detection capability.
Solution Approach 2:
The patent applies dynamics by making the evacuation unit operable and stoppable based on operational requirements. The system dynamically switches between monitoring mode (evacuation unit running) and identification mode (evacuation unit stopped), optimizing power consumption based on whether real-time detection or sensor calibration is needed.
2Measurement precision
If continuous sensor calibration and gas identification processes are executed, then detection accuracy is improved, but operational lifespan of the electronic nose decreases
Solution Approach 1:
The patent uses periodic action to perform sensor calibration and gas identification processes only when necessary, alternating between monitoring mode and identification mode. This prevents continuous operation of the evacuation unit and reduces wear on components, thereby extending operational lifespan while maintaining detection accuracy when needed.
Solution Approach 2:
The system performs self-service by automatically switching between monitoring and identification modes based on operational requirements. The electronic nose calibrates itself and performs gas identification only when the identification mode is activated, reducing unnecessary operations and extending its operational lifespan.
3Speed
If the evacuation unit operates continuously to maintain gas flow, then gas detection responsiveness is improved, but power consumption and component wear increase
Solution Approach 1:
The patent implements periodic action by operating the evacuation unit only during monitoring mode when gas flow is needed for detection, and stopping it during identification mode for sensor calibration. This reduces power consumption and component wear while maintaining responsiveness when required.
Solution Approach 2:
The patent applies dynamics by making the evacuation unit operable and stoppable based on operational requirements. The system dynamically adjusts the evacuation unit's operation to match the current mode (monitoring vs. identification), optimizing the balance between responsiveness and energy consumption.
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
Reduces power consumption and extends the operational lifespan of the electronic nose by minimizing unnecessary evacuation unit operation through strategic gas intake modes, ensuring accurate and efficient gas detection.
Implementation Method 1
The gas sensor device detects gas within the chamber and generates a detection signal in response to the gas
Implementation Method 2
the environmental sensor devices measure environmental parameters inside the chamber
Implementation Method 3
The gas intake unit includes a filter, a first gas intake channel and a second gas intake channel, with the filter connected to the first gas intake channel to allow fluid communication
Data Source
AI summary
An electronic nose for rapid detection comprises a gas intake unit, a detection unit, an evacuation unit, and a processing unit. The gas intake unit includes a first and a second channel. The electronic nose is configured to allow external gas to enter the chamber through the second channel periodically at a time interval and intake of the external gas lasts for a detection time period. The periodical intakes are repeated until a detection signal satisfies a criterion. Once the criterion is satisfied, the external gas is introduced into the chamber through the first channel via a filter continuing until a detection signal obtained by a gas sensor device and environmental parameters obtained by one or more environmental sensor devices reach an equilibrium. Then, the external gas is introduced into the chamber through the second channel without filtering. Subsequently, gas-related information related to the external gas is obtained based on the detection signal.