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Liquid medium leakage automatic detection method and system based on thermal imaging

A liquid medium, automatic detection technology, applied in instruments, character and pattern recognition, computer parts and other directions, can solve the problem of real-time monitoring and positioning of liquid medium leakage sources, etc.

Active Publication Date: 2021-04-30
咏峰(大连)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the infrared thermal imaging method has not yet had relevant research results and applications in the detection of liquid medium leakage, and it is impossible to realize real-time monitoring and positioning of the source of liquid medium leakage.

Method used

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  • Liquid medium leakage automatic detection method and system based on thermal imaging
  • Liquid medium leakage automatic detection method and system based on thermal imaging
  • Liquid medium leakage automatic detection method and system based on thermal imaging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] like figure 1 As shown, this embodiment provides an automatic detection method for liquid medium leakage based on thermal imaging, including the following steps:

[0065] 1) Obtain a frame of thermal image of the area to be detected. The thermal image in the present invention is a white-hot mode grayscale image, that is, the brightness of a point in the image is proportional to the temperature value of the point. Since the liquid medium has its unique infrared absorption spectrum and has a different infrared emissivity from the surrounding environment, there must be temperature differences. In the event of a leak, areas of temperature change appear in the corresponding thermal image.

[0066] 2) If the thermal image of the current frame is the first thermal image, the thermal image of this frame is used as the background image, and the processing stage S=0 and the number of thermal image frames that meet the detection conditions F are set count =0, go to step 1); othe...

Embodiment 2

[0099] This embodiment provides an automatic detection system for liquid medium leakage based on thermal imaging, including:

[0100] The image acquisition module is used to obtain a frame of thermal image of the area to be detected. If the thermal image of the frame is the first frame of infrared image, the thermal image of the frame is used as the background image, and the number of thermal image frames that meet the detection conditions is set to 0 ;

[0101] The background subtraction module is used to extract the dynamic change area of ​​the thermal image of the current frame according to the background image by using the background subtraction method;

[0102] The processing stage setting module is used to set the processing stage;

[0103] The parameter calculation module is used to calculate the area, area change rate, center change rate, shape circularity and curvature entropy of the dynamic change area of ​​the thermal image according to the processing stage;

[01...

Embodiment 3

[0108] This embodiment provides a processing device corresponding to the method for automatic detection of liquid medium leakage based on thermal imaging provided in Embodiment 1, and the processing device may be a processing device used for a client, such as a mobile phone, a notebook computer, a tablet computer, a desktop computer computer, etc., to execute the method of Embodiment 1.

[0109] The processing device includes a processor, a memory, a communication interface and a bus, and the processor, the memory and the communication interface are connected through the bus to complete mutual communication. A computer program that can be run on the processor is stored in the memory, and when the processor runs the computer program, the method for automatic detection of liquid medium leakage based on thermal imaging provided in Embodiment 1 is executed.

[0110] In some implementations, the memory may be a high-speed random access memory (RAM: Random Access Memory), and may al...

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Abstract

The invention relates to a liquid medium leakage automatic detection method and system based on thermal imaging. The system is characterized by comprising an image collection module which is used for obtaining a frame of thermal image of a to-be-detected region, and enabling the frame of thermal image to serve as a background image if the frame of thermal image is a first frame of infrared image; the background subtraction module is used for extracting a dynamic change region of the current frame of thermal image by adopting a background subtraction method; the processing stage setting module is used for setting a processing stage; the parameter calculation module is used for calculating parameters of the thermal image; the gas leakage judgment module is used for judging whether liquid medium leakage occurs in the to-be-detected area or not when the calculated parameters of the thermal image meet preset detection conditions; the alarm module is used for outputting an alarm signal when liquid medium leakage occurs in the to-be-detected area, and marking an extracted dynamic change area in the corresponding frame of thermal image; the hazardous chemical substance leakage detection system and the hazardous chemical substance leakage detection method can be widely applied to the field of hazardous chemical substance leakage detection.

Description

technical field [0001] The invention relates to a method and system for automatic detection of liquid medium leakage based on thermal imaging, and belongs to the field of leakage detection of hazardous chemicals. Background technique [0002] The production of hazardous chemicals is a high-risk industry with numerous production equipment and complex production processes. The raw materials or products of hazardous chemical manufacturers are mostly flammable and explosive materials. Once the medium leaks, it will come into contact with the air. The three elements of combustion can be satisfied under the fire source, and fire accidents are easy to occur, and the fire accidents of liquid medium in petrochemical enterprises are often accompanied by the spread of flowing fire and explosion, with strong three-dimensionality, wide spread and serious consequences. Therefore, hazardous chemical companies have always been the key targets of national safety production prevention, and ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/32G06K9/46G06K9/62G08B21/12
CPCG08B21/12G06V20/00G06V10/25G06V10/44G06F18/25
Inventor 汪洋胡英
Owner 咏峰(大连)科技有限公司
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