A passive infrared filter imaging sparse spectrum gas identification device and method

Abstract

The invention discloses a passive infrared filter imaging sparse spectrum gas identification device and method. The method comprises the following steps: designing a broadband and long-pass filter group; obtaining the sparse spectrum of the target gas; and a sparse spectrum identification algorithm based on SVM. The invention can quickly determine the location of the leakage source through imaging, and can identify the type of leaked gas at the same time. Compared with other methods, the cost is relatively low, and the system configuration is relatively simple. It is suitable for visual recognition of unknown gas targets and monitoring of various gas leaks. Toxic and harmful gas detection in the petrochemical field, industrial production field, and poisonous gas detection in the military field.

Description

technical field [0001] The invention relates to a gas identification device, in particular to a passive infrared filter imaging sparse spectrum gas identification device, and also relates to an infrared filter imaging sparse spectrum gas identification method based on the device, which belongs to the field of analysis and detection. Background technique [0002] Industrial gases contain a wide variety of flammable gases (such as ammonia, natural gas, etc.) There are a wide range of applications in the industry, and gas leakage has become a major hidden danger that threatens production and life safety at all times. It is of great significance to quickly classify leaking gas over a long distance. In the existing imaging gas type identification technology, according to the different implementation methods, it can be divided into spectroscopic and hyperspectral. [0003] The spectroscopic gas type identification method uses a filter to mount a detector for multi-band imaging, a...

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Problems solved by technology

[0005] In order to solve the above problems, the present invention provides an intuitive, simple and fast passive infrared filter imaging sparse spectrum gas identification device and method, aiming at the gas target can not be determined, or contains a variety of mixed gases, to achieve the gas target detection and identification of the type of gas or gas mixture

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