Multispectral Imaging for Fire and Gas Leak Detection
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Solution Overview
Problem
Traditional fire and gas detection systems face challenges in accurately pinpointing the location of fires and detecting hazardous gases, often requiring multiple detectors and risking worker safety due to false alarms and high costs, while existing technologies struggle to effectively separate foreground and background signals, especially in cases of small gas leaks.
Innovation Solution
A multispectral imaging device equipped with a microbolometer and a filter wheel, capable of capturing images at different wavelengths, processes images to separate background and foreground radiances by applying calibration, segmentation techniques, and noise removal, identifying incidents like fires or gas leaks based on spectral intensity changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fire and gas detection systems are used, then detection coverage is achieved, but system complexity and cost increase due to requiring multiple detectors
Solution Approach 1:
The patent combines fire detection and gas detection functionalities into a single multispectral imaging device. The device uses multiple spectral bands to simultaneously detect thermal signatures of fires and spectral absorption characteristics of gases, replacing what would traditionally require multiple separate detectors while maintaining comprehensive detection coverage
Solution Approach 2:
The multispectral imaging device performs multiple detection functions simultaneously - it can detect fires through thermal imaging, identify various gas types through spectral absorption analysis, and provide spatial localization of hazards. This multi-functional approach eliminates the need for dedicated detectors for each hazard type
2Reliability
If traditional detection systems are used, then detection is achieved, but false alarms increase reducing reliability
Solution Approach 1:
The patent segments the detected signal into multiple spectral components, analyzing different wavelength bands separately. By examining the spectral signature across multiple bands, the system can distinguish between actual hazards (fires, specific gases) and background interference, significantly reducing false alarms while maintaining reliable detection
Solution Approach 2:
The system uses spectral analysis where different substances exhibit characteristic absorption and emission patterns across wavelengths. By analyzing these spectral 'color' signatures, the device can accurately identify fire and gas types while filtering out false alarm sources that do not match known hazard spectral patterns
3Measurement precision
If multispectral imaging is implemented, then foreground and background separation is improved, but device complexity increases
Solution Approach 1:
The patent transitions from single-wavelength detection to multispectral detection, adding the spectral dimension to the spatial detection. By capturing images across multiple wavelength bands and analyzing spectral differences, the system achieves superior foreground-background separation without requiring complex mechanical or optical modifications beyond standard multispectral imaging components
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
The system provides accurate and cost-effective detection and localization of fires and hazardous gases, reducing false alarms and enhancing worker safety by effectively distinguishing between background and foreground signals, even in environments with high disturbance.
Implementation Method 1
A multispectral imaging device equipped with a microbolometer
Implementation Method 2
The multispectral imaging device may comprise a microbolometer
Implementation Method 3
the multispectral imaging device comprises a filter wheel operable to filter different wavelengths as it rotates in front of a camera
Implementation Method 4
capture images of a field of view at different wavelengths; acquiring a plurality of spectral images from the multispectral imaging device
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2D
AI summary
Embodiments of the disclosure include systems and methods for detection of background and foreground radiances captured by a multispectral imaging device. In some embodiments, a multispectral imaging device may generate a plurality of images of the same field of view, wherein the images may be captured at a variety of wavelengths. These images may be processed to identify any incidents, such as fire and/or gas leaks, within the field of view of the imaging device.