Calibrating Multiple Electromagnetic Radiation Detectors
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Solution Overview
Problem
Existing chemical species detection systems, particularly in facilities like LNG plants, face challenges in accurately detecting small hydrocarbon leaks due to variability between multiple detectors, leading to masked signals and false positives from background and noise interference.
Innovation Solution
A method of calibrating multiple electromagnetic radiation detectors by adjusting individual pixel intensities to match the average intensity value, reducing variability and improving image quality, which involves generating a calibration beam and detecting it with both detectors to synchronize their responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple detectors are used to monitor chemical species, then the coverage area increases, but the intensity response variability between detectors increases
Solution Approach 1:
The patent applies parameter changes by adjusting the integration time of each detector individually to optimize the signal-to-noise ratio. By varying the integration time parameter for each detector based on its specific performance characteristics, the system achieves consistent intensity responses across multiple detectors while maintaining broad coverage area.
2Measurement precision
If integration time is increased to improve signal-to-noise ratio, then detection sensitivity improves, but temporal resolution decreases
Solution Approach 1:
The patent implements dynamics by making the integration time adjustable and detector-specific rather than fixed. This allows the system to optimize detection sensitivity for each detector while maintaining the capability to respond to temporal changes in chemical species concentration, achieving a dynamic balance between signal-to-noise ratio and temporal resolution.
3Device complexity
If detectors are operated independently, then system complexity is reduced, but false positives from background interference increase
Solution Approach 1:
The patent applies feedback by continuously monitoring the intensity responses from multiple detectors and using this information to adjust detection thresholds and parameters. This feedback mechanism enables the system to distinguish between background interference and actual chemical species signals, reducing false positives while maintaining manageable system complexity through automated adaptation.
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
This calibration method enhances the ability to detect chemical species by reducing intensity response variability between detectors, leading to improved image quality and decreased false positives, thereby effectively identifying small leaks that might otherwise be masked.
Implementation Method 1
generating a calibration electromagnetic radiation beam. At least a portion of the calibration electromagnetic radiation beam is detected with a first electromagnetic radiation detector
Data Source
AI summary
Methods for calibrating multiple electromagnetic radiation detectors within a detection system and methods of using such calibrated systems which include generating a calibration electromagnetic radiation beam at a first temperature. At least a portion of the calibration electromagnetic radiation beam is detected with a first electromagnetic radiation detector. An average intensity value of a plurality of pixels from the first electromagnetic radiation detector is obtained. One or more pixels of the first electromagnetic radiation detector are adjusted to decrease the difference between the intensity of an individual pixel and the average intensity value of the first electromagnetic radiation detector. Detecting at least a portion of the calibration electromagnetic radiation beam with a second electromagnetic radiation detector. One or more pixels of the second electromagnetic radiation detector are adjusted to decrease the difference between the intensity of an individual pixel and the average intensity value of the first electromagnetic radiation detector.