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Method and device for sorting massive gangue by using digital image processing technology

A technology of digital image and coal gangue, which is applied in the field of sorting large pieces of coal gangue, can solve the problems of low efficiency of gangue selection and gangue discharge, restriction of mine production and mine hoisting speed, and high labor intensity, etc., to achieve fast and large Market potential, effect on quality assurance and yield

Inactive Publication Date: 2016-09-21
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

[0004] For many years, large pieces of coal gangue have been pushed from the hand-selected belt conveyor to the gangue discharge chute by manpower with a shovel. This method is extremely labor-intensive, and the efficiency of gangue selection and discharge is low, especially in underground mines. During fault passing, the manual sorting and discharge of large gangue seriously restricts the production of the entire mine and the lifting speed of the mine

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  • Method and device for sorting massive gangue by using digital image processing technology
  • Method and device for sorting massive gangue by using digital image processing technology
  • Method and device for sorting massive gangue by using digital image processing technology

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Embodiment Construction

[0032] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0033] Such as figure 1 Shown: a kind of method utilizing digital image processing technology to sort bulk coal gangue, it is characterized in that, comprises the following steps:

[0034] Step 1: Obtain the left view, right view and front view of the measured raw coal on the conveyor belt through the CCD camera, and transmit the images to the computer;

[0035] Step 2: Calculate the pixel equivalent ε between the image size and the actual size, and obtain the actual size represented by the unit pixel;

[0036] Step 3: filter the left view, right view, and main view, and perform grayscale conversion to convert the image into a grayscale image;

[0037] Step 4: Segment the raw coal image and the background to obtain the effective coal block area; calculate the average gray value G of the coal block area mean , G mean More than 120 is coal ga...

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Abstract

The invention discloses a method for sorting massive gangue by using a digital image processing technology. Firstly, an original image of a raw coal measured on a conveying belt is obtained through a CCD camera, and is preprocessed by using the digital image processing technology; then, an image intensity value is used for filling a height value of the image, the three-dimensional reconstruction is performed, the pixel volume of the raw coal is calculated, an actual volume of the raw coal is calculated according to a corresponding pixel equivalent, and a massive raw coal is obtained according to volume threshold judgment; and gangue is determined according to a grey level histogram of the image, and is sorted into an appointed area by using an industrial robot. The method has the characteristics of improving the massive gangue sorting accuracy and speed.

Description

technical field [0001] The invention relates to the technical field of sorting large coal gangue, in particular to a method and device for sorting large coal gangue by using digital image processing technology. Background technique [0002] my country has a wide distribution of coal fields and a full coal-forming age. It is the country with the largest coal mining volume in the world. Improving the quality and output of coal is an important measure to improve the economic benefits of coal mines and enhance the international competitiveness of the coal mining industry. [0003] Coal gangue is a rock mixed with organic and inorganic compounds co-deposited with coal during the coal-forming process. It is a low-quality fuel with low calorific value, low carbon content, high hardness, high mineral content, and low organic matter content. If the content of coal gangue in the coal mine is too much, it will affect the output and quality of coal. Generally, coal gangue is stacked as...

Claims

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Application Information

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IPC IPC(8): B07C5/342B07C5/10
CPCB07C5/3425B07C5/10
Inventor 党宏社张超侯金良刘芳芳
Owner SHAANXI UNIV OF SCI & TECH
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