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Method for measuring thickness of sea surface spilled oil film based on differential laser triangulation method

A technology of laser triangulation and oil film thickness, applied in the direction of measuring devices, optical devices, instruments, etc.

Inactive Publication Date: 2009-09-16
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for measuring the thickness of oil film on sea surface oil spill based on differential laser triangulation, to solve the problem of oil film thickness measurement on sea surface oil spill, to fill up the blank of this technical research in my country's offshore oil spill monitoring, and to promote the current situation in my country. The development of oil spill monitoring level provides a technical basis for the thickness measurement of oil spilled oil film on the sea surface, the dynamics of oil layer expansion and marine environmental science

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  • Method for measuring thickness of sea surface spilled oil film based on differential laser triangulation method
  • Method for measuring thickness of sea surface spilled oil film based on differential laser triangulation method
  • Method for measuring thickness of sea surface spilled oil film based on differential laser triangulation method

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Embodiment 1

[0044] Below to image 3 The shown experimental light path is taken as an example to illustrate the specific measurement process of the measurement method of the present invention;

[0045] ① Optical path system construction

[0046] to build image 3 In the shown symmetrical oblique laser triangulation ranging system, the light source part of the system includes a laser 1 , a converging lens 2 , a beam splitter 3 , and mirrors 18 , 19 , 28 , and 29 . The laser 1 is a He-Ne laser with a wavelength λ=632.8nm, and the converging lens 2 is a converging lens with a focal length f=300mm. The receiving (imaging) system is composed of an imaging lens 3 , a detector CCD 4 and a data acquisition and processing module 6 . The imaging lens 3 is an imaging lens with f=250mm, the detector CCD 4 is an area array CCD, and the data acquisition and processing module 6 includes an image acquisition card and a computer. The sample pool 7 is a transparent glass pool without a cover, water is ...

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Abstract

The invention relates to a method for measuring thickness of sea surface spilled oil film based on differential laser triangulation. The method uses dual laser triangulation ranging system, and laser beams emitted by two lasers are respectively irradiated to the upper and the lower surfaces of an oil film to be measured in any vertical direction; the off-plane displacements of the upper and the lower surfaces can be obtained simultaneously according to the size of image drift and configuration parameters of imaging system; the thickness of the measured oil film can be determined by subtracting; and the thickness distribution of oil film in spilled oil area can be obtained by multi-point sampling. The non-contact measuring method has the characteristics of simple theory, convenient measurement, low cost, high precision, small volume and the like, and can be applied to dynamic on-line measurement of oil film thickness at the surface of aqueous solution.

Description

【Technical field】: [0001] The invention belongs to the technical field of three-dimensional monitoring of the marine environment, and in particular relates to a technique for measuring the thickness of an oil film on the sea surface. 【Background technique】: [0002] The measurement of oil film thickness on the sea surface is one of the indispensable tasks in marine environmental management, and it is a very important issue in the fields of environmental protection, chemical analysis, and oil film dynamics research. Marine monitoring departments and experts have been looking for a method to accurately measure the thickness of the oil film on the water surface, but a credible method for measuring the thickness of the oil film on the water surface has not been found until now. Oil film thickness provides effective and reasonable guidance for oil spill control (such as the correct and reasonable use of dispersants and on-site burning, etc.), and provides an important scientific ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/06
Inventor 葛宝臻吕且妮王向南王春谊魏耀林姚文达
Owner TIANJIN UNIV
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