Hyperspectrum-based ship tail gas measurement system and method

Abstract

The invention discloses a hyperspectrum-based ship tail gas measurement system. The system comprises a hyperspectral data acquisition module, a data preprocessing module and a spectral analysis module, wherein the hyperspectral data acquisition module comprises a hyperspectral camera for line scanning and a common camera provided with a high wide-angle lens; the common camera is used for positioning a target ship; the hyperspectral camera is used for carrying out real-time line scanning to acquire spectral data of target ship tail gas; the data preprocessing module is used for preprocessing the acquired hyperspectral image data; the spectral analysis module is used for analyzing and processing the preprocessed hyperspectral image data, a multi-dimensional time sequence ship tail gas spectral analysis model based on a support vector machine is arranged in the spectral analysis module, and the multi-dimensional time sequence ship tail gas spectral analysis model inputs the hyperspectralimage data of the target ship tail gas and outputs the component data of the tail gas. The invention further discloses a hyperspectrum-based ship tail gas measurement method. The spectral analysis model is established based on the support vector machine, and the identification speed and accuracy are improved.

Description

technical field [0001] The invention relates to the technical field of ship exhaust measurement, in particular to a hyperspectral-based ship exhaust measurement system and method. Background technique [0002] Exhaust gas from ships mainly contains nitrogen oxides (NOx), sulfur oxides (SOx), carbon oxides (COx), hydrocarbons (HC) and particulate matter. Exhaust gas from ships makes atmospheric environmental problems such as greenhouse effect, ozone layer depletion and acid rain more serious. While polluting the air, it seriously affects all aspects of human daily life and poses a great threat to people's health. As the problem of ship engine emission pollution becomes more and more prominent, effective regulation of ship exhaust emissions has an urgent need and is of great significance. [0003] At present, the methods that can be used to detect ship exhaust emissions in domestic and foreign research and practical applications mainly include laboratory comparative analysis ...

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Problems solved by technology

[0004] Existing exhaust telemetry technology is mainly based on active light sources, which are greatly affected by the environment, and the installation of the devi

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