Method for real-time monitoring gas heating furnace flame on the basis of ROI average image analysis

An average image and gas heating technology, which is applied in the direction of instruments, character and pattern recognition, computer parts, etc., can solve the problems of unsuitable gas industrial heating furnace flame monitoring, burner flame crosstalk, etc.

Inactive Publication Date: 2016-06-15
WUHAN UNIV OF SCI & TECH
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Problems solved by technology

Existing flame video monitoring systems at home and abroad are mainly used for monitoring the flame of coal-fired or oil-fired industrial heating furnaces. The existing image processing methods are not suitable for flame monitoring of gas-fired industrial heating furnaces, especially for multi-burner gas-fired industrial heating furnaces. Faced with the serious flame crosstalk problem between the burners, the existing image processing methods cannot accurately give the automatic discrimination results of the combustion state

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  • Method for real-time monitoring gas heating furnace flame on the basis of ROI average image analysis
  • Method for real-time monitoring gas heating furnace flame on the basis of ROI average image analysis
  • Method for real-time monitoring gas heating furnace flame on the basis of ROI average image analysis

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Embodiment Construction

[0035] The following describes the implementation of the present invention in detail with reference to the drawings and examples, but the examples should not be construed as limiting the present invention.

[0036] See figure 1 The method for real-time flame monitoring of a gas heating furnace based on ROI average image analysis described in the present invention includes the following steps:

[0037] Step 1: Under normal combustion conditions, collect a frame of image from the high temperature imaging system, select the flame region of interest (ROI) around the burner using human-computer interaction, record the ROI coordinate information, and save it as a template. In actual work, the position of the fire detection lens extending into the furnace in the high temperature imaging system and the burner nozzle in the furnace are relatively fixed. The specific method is: after the hardware of the monitoring system is ready, open the monitoring system software, and for each channel of...

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Abstract

The invention discloses a method for real-time monitoring gas heating furnace flame on the basis of ROI average image analysis which belongs to the field of industrial heating furnace flame video monitoring. The method comprises following steps: 1) setting a flame region of interest(ROI) through a human-computer interaction method; 2) extracting a ROI image from a flame monitoring video flow and calculating an average image; 3) pre-treating the ROI average image, including noise smoothing, threshold segmenting, morphological processing, to determine the most probable flame pixel region; 4) extracting flame features from the pre-treated image, comprising flame region area, average brightness, mass center and flame color principal components; 5) synthetically analyzing flame feature, establishing judgment rules, automatically identifying flame burning status and outputting; 6) establishing off-line self-study model by use of historical data, optimizing system parameters, increasing method robustness. The method can be applied for real-time monitoring combustion conditions of gas heating furnace with single-burner or multi-burner and guarantees safety of industrial production.

Description

Technical field [0001] The invention belongs to the field of industrial heating furnace flame video monitoring, and specifically relates to a real-time flame monitoring method of a gas heating furnace based on ROI average image analysis. Background technique [0002] Gas heating furnaces play an important role in petroleum, chemical, steel and other manufacturing enterprises. The flame combustion status is the most direct reflection of their working conditions. Generally, it is required to ensure that the flame burns fully and stably to avoid safety accidents caused by flameout of the furnace. Therefore, it is necessary to monitor the furnace flame combustion status in real time during the production process, and provide timely alarm information and take countermeasures when the working conditions are abnormal. The existing automatic flame monitoring methods often use single-point ultraviolet, infrared or visible light photoelectric sensor elements, and use flame brightness or fl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/20G06K9/46
CPCG06V10/22G06V10/462
Inventor 徐望明伍世虔邱奕敏郑超兵
Owner WUHAN UNIV OF SCI & TECH
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