Gas Sensor Drift Correction via Double Cycling Measurement
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Solution Overview
Problem
Existing gas sensor technologies face challenges in maintaining accuracy and reliability over time due to sensor drift, especially when detecting diverse gas components in industrial, environmental, and national defense safety fields.
Innovation Solution
A method and device for performing sensor drift correction using a double cycling measurement technique, where first measurement data for a reference gas is obtained in a first cycle, and second measurement data for a target gas is obtained in a second cycle, allowing for the generation of drift-corrected features by calculating a ratio of the second measurement data to the first.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensor measurement is performed continuously over time, then detection capability for diverse gas components is maintained, but sensor drift occurs reducing measurement accuracy
Solution Approach 1:
The patent applies preliminary action by performing a first cycle measurement with reference gas before the actual target gas detection. This preliminary measurement establishes a baseline that is used to correct subsequent measurements, preventing drift accumulation by proactively establishing a reference state before the main detection task.
Solution Approach 2:
The patent implements feedback through the double cycling measurement approach where the first cycle measurement data is fed back to correct the second cycle target gas measurements. The correction factor derived from reference gas measurements is continuously applied to maintain accuracy, creating a closed-loop system that compensates for drift in real-time.
2Measurement precision
If double cycling measurement is performed to correct sensor drift, then measurement accuracy is improved, but measurement time is increased
Solution Approach 1:
The patent applies periodic action by structuring the measurement process into two distinct cycles: a first cycle for reference gas measurement and a second cycle for target gas measurement. This periodic structure allows the system to efficiently alternate between calibration and detection phases, maintaining accuracy while managing time through rhythmic, predictable measurement patterns.
Data Source
AI summary
The present disclosure relates to a method and apparatus for performing sensor drift compensation based on double cycling measurement. A method for performing drift correction according to gas sensor measurement according to an embodiment of the present disclosure may comprise: obtaining first measurement data for a reference gas for each sensor using one or more sensors in a first cycle; obtaining second measurement data for a target gas for each sensor using the one or more sensors in a second cycle; and generating a drift-corrected feature for each sensor based on a ratio calculated by dividing the second measurement data by the first measurement data.