Gas Sensor Correction for Environmental Interference
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Solution Overview
Problem
Conventional gas sensors are sensitive to external environments such as temperature and humidity, leading to inaccurate gas detection, making it difficult for users to determine if gases are present and to assess air quality or gas contamination.
Innovation Solution
A gas sensing device with a correction control part that adjusts the output value to a reference value when the sensed value is lower than the reference, and displays or provides information corresponding to the corrected value, ensuring accurate detection and easy recognition of gas presence and contamination levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional gas sensor is used to detect gas concentration, then the sensor can output resistance or voltage values, but the output is sensitive to external environment such as temperature and humidity, leading to inaccurate detection
Solution Approach 1:
The patent introduces a correction control unit as an intermediary between the gas sensing unit and the output display. This unit receives the raw sensor output and applies correction algorithms to compensate for environmental interference, effectively mediating between the sensitive sensor and the accurate measurement requirement
Solution Approach 2:
The correction control unit implements feedback by continuously monitoring the sensor output and adjusting it based on predetermined correction criteria. When the output falls below a reference value, the system applies correction to account for environmental factors, creating a closed-loop feedback mechanism that improves measurement accuracy
2Ease of operation
If the gas sensor output is directly displayed without correction, then the device structure remains simple, but users cannot accurately determine whether gas is detected or the air quality
Solution Approach 1:
The correction control unit serves as an intermediary processing layer that enhances information quality before presentation to the user. It filters out environmental noise from the sensor signal, ensuring that the information displayed reflects actual gas concentration rather than environmental fluctuations
Solution Approach 2:
The system performs preliminary correction action on the sensor output before displaying it to the user. By pre-processing the signal to compensate for environmental factors, the system ensures that the user receives accurate information without needing to understand the underlying corrections
Data Source
AI summary
The present invention relates to a gas sensing device comprising: a gas sensing part for outputting a gas detection result; and a correction control part for changing the value outputted from the gas sensing part to a reference value when the output value is lower than the reference value.