Coal petrography reflection rate digital automatic determination method

A measurement method and technology of reflectivity, which are applied in the field of high-efficiency measurement of coal and rock reflectivity, high precision, and digital automatic measurement of coal and rock reflectivity. Accurate rock reflectivity and its distribution, increasing the number of measurement points, and the effect of automation

Inactive Publication Date: 2004-05-05
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a digital automatic measurement method of coal reflectance to solve the technical problem that both measurement accuracy and measurement speed cannot meet higher requirements at the same time

Method used

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  • Coal petrography reflection rate digital automatic determination method
  • Coal petrography reflection rate digital automatic determination method
  • Coal petrography reflection rate digital automatic determination method

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Experimental program
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Embodiment Construction

[0023] Combine below Figure 1 to Figure 6 , to illustrate specific embodiments of the present invention.

[0024] The main idea of ​​the present invention is to take the advantages of the current two technologies to overcome their shortcomings, utilize the high gray level of the digital camera and the characteristics of changing the exposure time, expand the gray level of the camera, and improve the accuracy of measuring the reflectivity of coal rocks . figure 2 It is a hardware block diagram of the digital coal rock reflectance automatic measurement system of the present invention; image 3 It is the main interface of the digital coal rock reflectance automatic measurement system of the present invention.

[0025] After many experiments, such as Figure 4 As shown, a functional relationship is finally obtained:

[0026] G=a×R×T+b×R+c×T+d

[0027] G - Grayscale,

[0028] R - reflectivity,

[0029] T - exposure time,

[0030] a, b, c, d, - coefficients,

[0031] Befo...

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Abstract

A digitalized method for automatically measuring the reflectivity of coal rock features that a digital camera head is used to measure the reflectivity of coal rock and the image analyzing technique is used to divide the microscopic components of coal rock. Its advantages are high precision and high automation level.

Description

technical field [0001] The invention relates to a digital automatic measurement method for coal and rock reflectance, in particular to a digital automatic method for high-precision and high-efficiency measurement of coal and rock reflectance. Background technique [0002] At present, the main equipment for measuring the reflectance of coal rocks is a microphotometer, which has high measurement accuracy, but the measurement speed is slow, the number of measurement points is small, and the accuracy of the measurement results is not high, especially the reproducibility of the reflectance distribution is poor; This method is labor-intensive and requires operators to undergo professional training. [0003] Another equipment for measuring the reflectance of coal and rock is an image analyzer. When measuring the reflectance of coal and rock with an image analyzer, several standard slices are selected according to the samples to be measured to establish the relationship between gray...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/55
Inventor 胡德生
Owner BAOSHAN IRON & STEEL CO LTD
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