Hyperspectral infrared imaging gas monitoring device and monitoring method thereof

Abstract

The invention discloses a hyperspectral infrared imaging gas monitoring device. The device comprises an infrared imaging spectrograph, an infrared thermal imager, a visible light imaging system, an image processing system and a comprehensive display control system. The infrared imaging spectrograph, the infrared thermal imager and the visible light imaging system are connected with the image processing system, the comprehensive display control system is connected with the infrared imaging spectrograph, the infrared thermal imager, the visible light imaging system and the image processing system, and the comprehensive display control system displays output image data of a system and gas recognition results. The invention further discloses a monitoring method of the device. Visible light images and infrared images are fused to achieve primary detection of a gas distribution area, the infrared imaging spectrograph is adopted to collect hyperspectral infrared data of a target area, the visible light images, the infrared images and the hyperspectral infrared data are input into the image processing system to be processed, and meanwhile, the concentration of gas can be estimated according to the visible light images and the infrared image data.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, and in particular relates to a gas type identification system and a gas type monitoring and identification method based on hyperspectral infrared imaging technology. Background technique [0002] With the aggravation of air pollution, environmental problems have attracted more and more attention. Rapid and accurate prediction of air pollution gases has a huge effect on environmental protection. At present, fixed-point sampling is usually used in atmospheric monitoring, but the data obtained by this method can only reflect the air pollution degree in a small range of sampling points, so it is limited in real-time gas monitoring. [0003] With the development of spectral measurement technology and infrared imaging technology in recent years, the use of hyperspectral infrared imaging technology provides the possibility to monitor the composition changes and distribution of a wide ra...

AI Technical Summary

Problems solved by technology

[0004] At present, the gas monitoring technology based on hyperspectral infrared imaging technology is still in the development stage. Different gas types, or the same gas but different concentrations of the radiated infrared spectrum will be different, and the radiated spectral signal will be affected by the long-distance atmospheric transmission. Due to the influence of absorption and scattering of particles in the air, there will be great errors in the final measured spectral data

Although some gas monitoring systems based on hyperspectral infrared imaging technology have been developed, for example, the document Remote Sensing of Gases by Hyperspectral Imaging: Results of Measurements in the Hamburg Port Area introduces a HYGAS hyperspectral imager developed by Bruker, which can identify common dangerous gases, but this has not been fully considered. The influence of gas concentration on the measurement spectrum, its accuracy is not high enough, and the gas concentration cannot be measured, so it is difficult to meet the requirements of gas concentration monitoring

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