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Oil liquid micro-leakage identification method

An identification method and micro-leakage technology, applied in image data processing, application of light to test fluid tightness, instruments, etc., can solve problems such as false detection, achieve the effects of eliminating noise interference, increasing image noise, and improving accuracy

Pending Publication Date: 2021-06-15
华能东莞燃机热电有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method requires on-site modification, and the presence of other substances other than oil will cause false detection

Method used

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  • Oil liquid micro-leakage identification method
  • Oil liquid micro-leakage identification method

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Experimental program
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no. 1 approach

[0045] see figure 1 , the first embodiment of the oil micro-leakage identification method of the present invention comprises the following steps:

[0046] Step S1 : use the ultraviolet light source module to illuminate the area to be detected and the camera to collect fluorescence images correspondingly, use the blue light source module to illuminate the area to be detected and the camera to collect blue light images accordingly.

[0047] Preferably, the camera is a high-definition industrial camera. The wavelength of the ultraviolet light source of the ultraviolet light source module is 360 nm, and the wavelength of the blue light source of the blue light source module is 380-500 nm. Specifically, the ultraviolet light source module may be an ultraviolet lamp.

[0048] Step S2: preprocessing the fluorescence image and the blue light image.

[0049] Step S3: Perform image difference processing on the preprocessed fluorescence image and the blue light image to obtain an oil ...

no. 2 approach

[0051] see figure 2 , the second embodiment of the oil micro-leakage identification method of the present invention comprises the following steps:

[0052] Step S1 : use the ultraviolet light source module to illuminate the area to be detected and the camera to collect fluorescence images correspondingly, use the blue light source module to illuminate the area to be detected and the camera to collect blue light images correspondingly.

[0053] Step S21: Perform image denoising processing on the fluorescence image and the blue light image.

[0054] Preferably, in order to remove noise while retaining the overall grayscale distribution characteristics of the image, step S21 specifically uses Gaussian filtering to perform image denoising processing on the fluorescence image and the blue light image.

[0055] Step S22: Perform image enhancement processing on the fluorescence image and the blue-light image after image denoising processing.

[0056] Step S22 specifically uses the...

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Abstract

The invention discloses an oil liquid micro-leakage identification method. The method comprises the following steps of S1, irradiating a to-be-detected area by using an ultraviolet light source module, correspondingly acquiring a fluorescent image by using a camera, irradiating the to-be-detected area by using a blue light source module, and correspondingly acquiring a blue light image by using the camera, S2, preprocessing the fluorescent image and the blue light image, and S3, carrying out image differential processing on the preprocessed fluorescent image and blue light image to obtain an oil leakage detection result. Through the mode, the oil leakage detection and identification method has the advantages that the anti-interference effect of oil leakage detection and identification is relatively good, the influence of illumination intensity is relatively small, in addition, the oil leakage detection and identification investment is relatively small, the site does not need to be transformed, subjective errors caused by manual inspection can be reduced, and the accuracy of oil leakage detection and identification is improved.

Description

technical field [0001] The invention relates to the technical field of oil leakage detection and identification, in particular to a method for identifying oil micro-leakage. Background technique [0002] At present, the main detection methods of oil leakage are visual detection method, spectral detection method, etc. The visual inspection method relies on manual inspection to detect whether there is liquid leakage. This method requires inspectors to have certain experience, and the inspection effect is greatly affected by work experience, which is time-consuming and prone to leakage and false detection. The internal lighting environment of the power plant where the liquid station is located is complex, the lighting inside the power plant room is uneven, and the light is bright and dim, which is not conducive to human observation. Although the spectral detection method improves the accuracy and sensitivity of oil mass identification, it needs to select a large number of samp...

Claims

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Application Information

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IPC IPC(8): G01M3/38G06T5/00G06T7/00G06T7/136G06T7/194G06T7/90
CPCG01M3/38G06T7/0002G06T7/136G06T7/194G06T7/90G06T2207/10064G06T5/70
Inventor 冯庭有江永雷保明刘希念肖晨宇邱爽
Owner 华能东莞燃机热电有限责任公司