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Mimicry reconstruction and performance computing method of fiber filter medium structure

A fiber filtration, media structure technology, used in computing, computer parts, 3D image processing, etc.

Active Publication Date: 2014-08-06
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This application eliminates the calculation error caused by the same elliptical section corresponding to two fiber directions by selecting an appropriate section plane. It is mainly suitable for quantitative evaluation of fiber orientation degree, and is not suitable for mimetic reconstruction of fiber filter media structure.

Method used

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  • Mimicry reconstruction and performance computing method of fiber filter medium structure
  • Mimicry reconstruction and performance computing method of fiber filter medium structure
  • Mimicry reconstruction and performance computing method of fiber filter medium structure

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Embodiment 1

[0069] In conjunction with the accompanying drawings, a mimetic reconstruction method of a fiber filter medium structure of the present embodiment, the steps are:

[0070] Step 1. Scan the real fiber filter medium under a scanning electron microscope to obtain a scanning electron microscope image of the fiber filter medium. For the scanning electron microscope image of the fiber filter medium obtained in this embodiment, refer to figure 1 .

[0071] Step 2: Set the optimal threshold, perform binarization on the image obtained in Step 1, and extract the binary image of the fiber filter medium and pores, where the fiber pixel value is 1 and the pore pixel value is 0. The determination process of the optimal threshold is as follows:

[0072] a. Gray-scale stretching of the scanning electron microscope image of the fiber filter medium:

[0073] K=255 / (b-a)

[0074] M=(-255*a) / (b-a)

[0075] Y=KX+M

[0076] In the above formula, a is the minimum grayscale value of the SEM imag...

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Abstract

The invention discloses a mimicry reconstruction and performance computing method of a fiber filter medium structure, and belongs to the technical field of fiber structure mimicry reconstruction. The mimicry reconstruction process comprises the steps: first, obtaining fiber filter medium images; second, setting the best threshold value and performing binarization processing; third, performing center line detection on binary images; fourth, performing four-opposite-angle direction comparison on pixel points of the center line and obtaining the gyration radius di and the gyration direction df; fifth, performing three-dimensional gyration and obtaining a fiber filter medium mimicry reconstruction image. According to the mimicry reconstruction and performance computing method, by inputting a series of relevant parameters, filter efficiency curves and pressure loss curves of fiber filter media at different wind speeds are obtained by means of the empirical formula. According to the method, microcosmic single-layer structure images in real fiber filter media are used as the basis, mimicry reconstruction is performed on the obtained images by means of the simple and rapid image processing method, and a mimicry reconstruction model can simulate the real fiber filter medium structure realistically.

Description

technical field [0001] The invention relates to the technical field of fibrous structure mimic reconstruction, and more specifically, relates to a mimetic reconstruction of a fiber filter medium structure and a performance calculation method thereof. Background technique [0002] Dust will cause harmful effects on the atmospheric environment, production and human health, especially the inhalable particulate matter will cause harm to the human respiratory system. Therefore, reducing suspended particulate matter in the air is of great significance to protecting the environment and safeguarding human health. [0003] Faced with the increasingly serious problem of air pollution, the bag filter has a high efficiency of collecting particulate pollutants, so it has been widely used. As one of the core components of the bag filter, fiber filter media can meet the requirements of national standards for the filtration of fine particles, which is closely related to its filtration effi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/00G06T19/00G06K9/38
Inventor 钱付平赵鹏杨洪鲁进利余绍龙王帆林清源
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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