Passive remote sensing technique-based monitoring system and method of tail gas of ships at plurality of berths in harbour

Abstract

The invention belongs to the technical field of optical measuring, and more specifically relates to a passive remote sensing technique-based monitoring system and a method of tail gas of ships at a plurality of berths in a harbor. The passive remote sensing technique-based monitoring system comprises a rotary platform, a telescope, a camera, a middle shaft, a spectrometer, and a computer; the telescope and the camera are provided with a same angle of visual field; measuring of spectrum signals at horizontal and vertical angles of a monitored range can be realized under controlling using the computer, an area without ship tail gas pollution is taken as a background value, and spectral analysis is adopted to obtain differential optical thickness and obtain the distribution situations of gasto be detected in the plane; spectrum signals received by the telescope are combined with smoke plume and sky cloud layer situations recorded by the camera, data with relatively large difference caused by cloud layers are selected via screening, and the accuracy of measured results is verified based on smoke plume distribution situations in images. The passive remote sensing technique-based monitoring system and the method can be used for reflecting the ship tail gas plane concentration distribution images of a whole harbor through contrast analysis on spectral analysis result and image contrast analysis at different view fields, and realizing rapid determination of ships with relatively high tail gas concentration in the harbor.

Description

technical field [0001] The invention belongs to the technical field of optical measurement, and in particular relates to a monitoring system and method for tail gas discharge of multiple berth ships in a port. Background technique [0002] During the process of shipping and berthing, the substances that cause air pollution are mainly produced by the combustion of diesel engine fuel. Air pollutants emitted mainly include PM, SO 2 , NOx, HC, CO, VOCs, etc. have become the main sources of air pollution in coastal areas, especially in port cities. [0003] According to "Limits and Measurement Methods of Exhaust Pollutants from Ship Engines (China's First and Second Stages)", the sampling probe for gaseous pollutants must be installed at least ten exhaust pipe diameters downstream from the outlet of the exhaust system of the ship's engine. And take heat preservation measures to ensure that the exhaust gas temperature at the probe is not lower than 343K. For multi-cylinder mari...

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Problems solved by technology

[0008] The purpose of the present invention is to improve the disadvantages of the existing methods for measuring ship pollutants in ports, which are cumbersome, poor in effect, unable to represent the average value, etc., and provide a method capable of quickly measuring the tail gas of ships in multiple berths in the port (including NO 2 and SO 2 The emission monitoring system, through the coaxial observation of telescopes and cameras, combined with spectral data and image data, can obtain the distribution of pollutants, on-site weather and ship docking, etc.

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