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Bunker coal level detecting method based on virtual instrument intelligent cameras

A technology of intelligent camera and detection method, which is applied in the direction of instrumentation, engine lubrication, machine/engine, etc., can solve problems affecting the normal operation of coal-fired power plants, difficult maintenance work, and the inability to ensure the stable operation of the coal bunker automatic coal blending system. Achieve considerable economic benefits, safe supply, and convenient installation

Active Publication Date: 2014-01-15
TAIYUAN UNIV OF TECH +2
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AI Technical Summary

Problems solved by technology

[0003] At present, the known coal level detection technologies in coal bunkers mainly include capacitive sensing type coal level detection system, heavy hammer type coal level detection system, ultrasonic coal level detection system, laser ranging coal level detection system, microwave radar coal level detection system, Nuclear radiation coal level detection system, etc. Although the coal level detection system has been widely used in coal production enterprises, it is found through the analysis of survey data that once the coal level detection system fails, the maintenance work will change under the influence of various factors. It is very difficult to obtain, as mentioned in the scientific paper "Application of Probability Hough Transform in Underground Coal Bunker Coal Level Detection" written by Professor Sun Jiping of China University of Mining and Technology in Volume 29, Issue 6 of the Journal of Coal Science published in December 2004 , this phenomenon shows that the current coal level detection system still needs to be improved
If the coal level of the coal bunker cannot be accurately measured, the stable operation of the automatic coal blending system of the coal bunker and the safe supply of coal into the furnace cannot be guaranteed, and the loss of nearly one million yuan per minute will affect the normal operation of the entire coal-fired power plant. run

Method used

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  • Bunker coal level detecting method based on virtual instrument intelligent cameras
  • Bunker coal level detecting method based on virtual instrument intelligent cameras
  • Bunker coal level detecting method based on virtual instrument intelligent cameras

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Experimental program
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Embodiment approach 1

[0025] refer to figure 1 , install the smart camera in three directions of the coal bunker, which are due south, due west, and due east. The three smart cameras are on the same horizontal plane. In the case of weak light and harsh environment, real-time monitoring of coal in the coal bunker From the coal pile image captured by the camera, the depth image matching can be performed to determine the contour line between the coal in the coal bunker and the coal bunker wall and the highest point of the coal pile, which is convenient for sampling the image contour, and does not There are blind spots, which improves the accuracy of observation.

[0026] figure 2 It is a schematic diagram showing the coordinate conversion relationship, and accurate position information is extracted by using the distance measuring device with the smart camera according to the present invention.

[0027] refer to figure 2 According to the coordinate transformation method, take any one of the smart ...

Embodiment approach 2

[0041] Embodiment 3: a=150, b=150, and c=1843.834mm is obtained. Others are the same as Embodiment 1.

Embodiment approach 3

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Abstract

A bunker coal level detecting method based on virtual instrument intelligent cameras belongs to the technical field of automatic online monitoring of coal equipment, and is characterized in that depth maps of reference substances are obtained by the three intelligent cameras and are matched, accurate distance information is extracted more reliably in a fuzzy environment with weak light, and the detecting method in the technical scheme is used for measuring the height of a bunker coal level. By the aid of the method, installation is convenient, accuracy of the distance information is increased, and whether the coal level in a bunker exceeds a threshold value or not can be analyzed in real time.

Description

technical field [0001] The present invention is based on a virtual instrument smart camera coal bunker coal level detection method, belongs to the technical field of automatic online monitoring of coal mine equipment, and relates to a depth map of a reference object obtained by three smart cameras for matching, in a blurred and weak light environment Next, a more reliable technical solution for extracting accurate distance information and measuring the detection method of coal level height in coal bunkers. Background technique [0002] With the rapid development of information technology, digital terminals that process character, sound, and image information at a high speed provide multimedia services that can support three-dimensional images and sounds, and research on three-dimensional information communication services that provide three-dimensional real multimedia services has been actively carried out . Research has recently been carried out on stereo vision systems ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/00
Inventor 乔铁柱陈昕乔葳赵弼龙满壮郑洪强
Owner TAIYUAN UNIV OF TECH
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