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Bucket wheel machine rotation angle measuring and coal flow balancing method based on image processing

A technology of rotation angle and image processing, applied in image data processing, measuring devices, image enhancement, etc., can solve problems such as slow operation, low reliability, unreliable correction, etc., achieve strong reliability, improve feasibility, and solve problems correcting difficult effects

Active Publication Date: 2021-08-20
HUANENG LIAOCHENG THERMAL POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]The coal yard is the most important fuel storage place for the thermal power generation system, and the bucket wheel machine is the most important fuel stack reclaiming equipment in the coal yard. The bucket wheel machine operates efficiently and reliably It is the most important part to ensure the entire thermal power generation system, and the effective positioning of the bucket wheel machine is the key factor for its efficient operation. The traditional measurement method is to measure the stroke by measuring the precise slip resistance through the transmission displacement between this wheel and the stroke gear of the electric equipment. The amount is prone to errors in operation and the correction is not reliable
[0003]The existing commonly used GPS or Beidou positioning method, high precision means low speed, but due to the special motion characteristics of the bucket wheel machine running slowly except for the belt conveyor, other mechanical structures, The method based on satellite positioning can meet its application to a certain extent. Due to the environmental protection situation, according to the "Action Plan for Comprehensive Control of Air Pollution in Beijing-Tianjin-Hebei and Surrounding Areas in Autumn and Winter 2017-2018" and China Huaneng Group Corporation Beijing-Tianjin-Hebei and surrounding areas 2017-2018 Autumn and Winter Comprehensive Air Pollution Control Implementation Plan Notice, requiring coal-fired power companies to close unclosed coal yards, GPS-based positioning methods cannot meet the requirements of indoor use, and its own data is easily affected by the surrounding environment. Influenced by environmental factors such as steel and coal piles, the reliability is not high

Method used

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  • Bucket wheel machine rotation angle measuring and coal flow balancing method based on image processing
  • Bucket wheel machine rotation angle measuring and coal flow balancing method based on image processing

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Embodiment 1

[0033] refer to Figure 1 to Figure 4, which is the first embodiment of the present invention, provides a bucket wheel machine rotation angle measurement and coal flow equalization method based on image processing, specifically including:

[0034] S1: Based on the digital image processing strategy of the FPGA platform, the camera is installed on the rotary shaft of the bucket wheel stacker and reclaimer.

[0035] S2: Use the FPGA platform as the main control hardware platform to drive the camera to read the image data and perform data processing on it to extract the target information.

[0036] S3: Use the rotary target recognition algorithm to construct a digital model to quantify the rotary angle of the bucket wheel machine.

[0037] S4: Send the attenuation factor to the rotary motor control PLC through the radio frequency module to complete the balance of coal flow at each rotary angle.

[0038] refer to figure 2 , using the digital model to obtain the coal flow rate o...

Embodiment 2

[0072] refer to Figure 5 ~ Figure 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that it provides a comparison of power consumption and economic comparison of bucket wheel machine rotation angle measurement and coal flow equalization method based on image processing. tests, including:

[0073] refer to Figure 5 , the board model is EP4CE6F17C8, 256-pin FBGA package According to ALTERA official data, CYCLONE IV reduces power consumption by 25% compared to CYCLONE III.

[0074] refer to Image 6 , the image filtering used in this embodiment is the simplest mean filtering. Due to environmental factors and the noise characteristics of the camera itself, an image filtering algorithm is introduced. The mean filtering is a typical linear filtering. A template is introduced, which includes the current pixel, that is, the surrounding The 8 adjacent pixels constitute a pixel nine-square grid, which is a filter ...

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Abstract

The invention discloses a bucket wheel machine rotation angle measuring and coal flow balancing method based on image processing. The method comprises the steps: installing a camera on a rotation shaft of a bucket wheel machine stacker-reclaimer based on a digital image processing strategy of an FPGA platform; taking the FPGA platform as a main control hardware platform, driving the camera to read image data and carry out data processing on the image data, and extracting target information; constructing a digital model by using a rotation target recognition algorithm, and quantifying the rotation angle of the bucket wheel machine; and sending the attenuation factor to a rotation motor control PLC through a radio frequency module, and finishing coal flow balancing at all rotation angles. According to the invention, the travel of the cart and the rotation angle of the cantilever belt can be accurately measured in real time, the position and attitude measurement of the bucket wheel machine in a thermal power generation system also has relatively high reliability, the problem of difficult correction is further solved by introducing digital image processing, and the feasibility is greatly improved.

Description

technical field [0001] The invention relates to the technical field of bucket wheel machine rotation angle identification targets and coal flow equalization, in particular to a bucket wheel machine rotation angle measurement and coal flow equalization method based on image processing. Background technique [0002] The coal yard is the most important fuel storage place for the thermal power generation system, and the bucket wheel machine is the most important fuel stacking and reclaiming equipment in the coal yard. The efficient and reliable operation of the bucket wheel machine is the most important part to ensure the entire thermal power generation system, and the bucket wheel machine The effective positioning is the key factor for its efficient operation. The traditional measurement method is to measure the stroke by measuring the precise slip resistance through the transmission displacement between this wheel and the stroke gear of the electric equipment. Errors are prone ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T7/90G06T7/73G06T5/00G01B21/22
CPCG06T7/0004G06T7/90G06T7/73G01B21/22G06T5/70
Inventor 李培栋付英强
Owner HUANENG LIAOCHENG THERMAL POWER CO LTD
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