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Electric arc furnace flame temperature measurement method and system based on visual perception

A visual perception, electric arc furnace technology, applied in the direction of sensing radiation from gas/flame, radiation pyrometry, measuring device, etc. Problems such as thermocouple sensors to avoid low detection accuracy, reliable data support, and improve stability and reliability

Pending Publication Date: 2021-12-17
XINJIANG NONFERROUS METAL IND GRP +2
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  • Application Information

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Problems solved by technology

The temperature measurement range of the system is low and cannot be used to measure the flame temperature of the electric arc furnace
[0005] Chinese patent application CN202010327174.4 discloses a new arrangement and working method of temperature measurement cameras, which divides each workpiece to be heated into four areas, and each area uses a temperature measurement camera for omnidirectional scanning monitoring. However, this method mainly relies on a large number of thermocouple sensors and cannot be used to measure the temperature of the flame of the electric arc furnace

Method used

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  • Electric arc furnace flame temperature measurement method and system based on visual perception
  • Electric arc furnace flame temperature measurement method and system based on visual perception

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Embodiment approach

[0043] (1) The information processing unit determines the first preliminary temperature according to the original flame picture may include the following steps: the information processing unit performs picture processing on the original flame picture (the picture processing may include mean filtering, thresholding Existing image processing methods such as method image segmentation, distortion point correction, and grayscale conversion process the original flame image to obtain the grayscale histogram of the original flame image, and then obtain the grayscale histogram through the grayscale histogram. the gray scale value of the brighter area of ​​the original flame picture) to obtain the gray scale value of the brighter area of ​​the original flame picture, and then convert the gray scale value of the brighter area through a predetermined brightness temperature conversion model, Thus the first preliminary temperature is obtained. In practical applications, the predetermined br...

Embodiment 1

[0056] Such as figure 1 As shown, a visual perception-based electric arc furnace flame temperature measurement system is used for such as figure 2 The flame of an electric arc furnace shown is used for temperature measurement. The specific structure may include: a visual two-color temperature measurement system, a photoelectric multi-wavelength detector, an information processing unit, a monitoring terminal and an electric arc furnace control system. The visual two-color temperature measurement system and the photoelectric multi-wavelength detector monitor the flame temperature of the electric arc furnace respectively, and the visual two-color temperature measurement system and the photoelectric multi-wavelength detector are respectively electrically connected to the information processing unit, so The information processing unit is electrically connected to the monitoring terminal, the monitoring terminal is connected to the electric arc furnace control system, and the elect...

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Abstract

The invention discloses an electric arc furnace flame temperature measurement method and system based on visual perception. The method comprises the steps: employing a visual two-color temperature measurement system and a photoelectric multi-wavelength detector to synchronously carry out the real-time temperature measurement of the flame of an electric arc furnace, and obtaining an original flame picture, a first initial temperature, and a second initial temperature; performing multi-sensor Kalman fusion on the first initial temperature and the second initial temperature to obtain a fusion correction temperature value; matching the original flame picture with data in a predetermined expert experience temperature library to obtain an expert experience temperature range and an expert experience temperature mean value; and comparing the fusion correction temperature value with an expert experience temperature range to determine the current temperature of the flame of the electric arc furnace. According to the invention, the flame temperature of the electric arc furnace can be monitored in real time in the smelting process, a reliable temperature value is obtained, the stability and reliability of the system are improved, and potential safety hazards caused by the fact that workers make close contact with electric arc furnace equipment in the smelting process are avoided.

Description

technical field [0001] The invention relates to the technical field of electric arc furnace flame temperature measurement, in particular to a method and system for measuring electric arc furnace flame temperature based on visual perception. Background technique [0002] Temperature monitoring in the smelting process is an important part of the electric arc furnace system, which is of great significance to the automatic control of the electric arc furnace temperature and the monitoring of the material smelting process. Traditional electric arc furnace temperature monitoring mainly relies on the experience of on-site workers, which cannot describe the temperature changes in the smelting process quantitatively in real time, and there are potential safety hazards for workers in close contact with electric arc furnace equipment during the production process. [0003] Existing temperature measurement technologies mainly include contact temperature measurement methods (such as ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G01J5/52
CPCG01J5/0018G01J2005/0077
Inventor 张国华王锴张元生吕潇何建璋黄威张迎棋徐明钰谷泉王波张聪王治宇刘冠洲许前李若熙王贤龙陈士权于骞翔
Owner XINJIANG NONFERROUS METAL IND GRP
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