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Method and device for detecting pollution degree of lubricating oil

A technology of pollution degree and lubricating oil, applied in measuring devices, material inspection products, image data processing, etc., can solve the problems of difficulty in accurately measuring diameter and area, poor measurement accuracy, inconvenient management, etc., to save cumbersome The effect of working, high measurement accuracy and fast processing speed

Inactive Publication Date: 2008-06-11
SHENZHEN YATEKS OPTICAL ELECTRONICS TECH CO LTD
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Problems solved by technology

This method has the following disadvantages: the first is that the measurement accuracy is poor
This is mainly because the three rings of the lubricating oil spot cannot be the standard three rings, so it is difficult to accurately measure the diameter and area of ​​each ring with the naked eye and a ruler, and it is also difficult to accurately judge the color with the naked eye. The depth value of the judgment will vary from person to person
Second, it is difficult to grasp the best observation time
In addition, there are many varieties of lubricating oil, so the detection work of lubricating oil is more cumbersome and inconvenient to manage

Method used

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  • Method and device for detecting pollution degree of lubricating oil

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] As shown in FIG. 2 , FIG. 3 , and FIG. 4 , the lubricating oil pollution degree detection device of the present invention includes an object loading platform 31 , an imaging unit 32 , an image processing unit 33 , a computing unit 34 and a display unit 35 . Place the prepared lubricating oil spots on the loading platform 31 , and turn on the transmission surface light source on the loading platform 31 . The imaging unit 32 uses a CCD camera to image the lubricating oil spots to obtain a lubricating oil spot map. The atlas is processed by the image processing unit 33, converted into a grayscale image, and the average grayscale value of the oil ring, the average grayscale value of the diffusion ring, the average grayscale value of the deposition ring, and the oil ring in the grayscale image are detected. The average diameter of the diffusion ring. The computing ...

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Abstract

The invention provides a method and device for inspecting the degree of contamination of the lubricant, the method of which comprises: make the lubricant speckle mapping; make imaging to the above mapping by camera; transform the above mapping image to gray level image; measure the gray value A of the diffusion ring, the gray value B of the aggradation ring, the gray value C of the oil control ring and the gray value D of the filter paper in the above gray level image, as well as measure the diameter E of the diffusion ring and the diameter F of the oil control ring; calculate the three values of the measurement parameters Alpha, Sd and Wd which reflects the degree of contamination of the lubricant according to the above gray values and diameters, wherein, the Alpha is equal to F / E, Sd is equal to LgB-LgA and the Wd is equal to LgD-LgC; determine the degree of contamination of the lubricant based on the values of the Alpha, Sd and Wd. The device provided in the invention comprises a plainstage, imaging unit, image processing unit, calculating unit and display unit. The method and device for inspecting the degree of contamination of the lubricant provided in the invention has the advantages of fast processing speed and high precision measurement.

Description

technical field [0001] The invention relates to a method and a device for detecting the pollution degree of lubricating oil, in particular to a method and a device for detecting the pollution degree of lubricating oil of an internal combustion engine. Background technique [0002] It is very important to determine the oil change period of lubricating oil such as diesel engines during the navigation of modern ships. Too late oil change will accelerate mechanical wear and cause major accidents, and early oil change will cause waste of lubricating oil. In order to detect the problems in the lubricating oil in time, reduce wear, prolong the life of the machine, improve the use effect of the lubricating oil, and avoid catastrophic equipment accidents, it is necessary to quickly and accurately detect the change of the lubricating oil during use, that is, the lubricating oil is polluted environment (containing wear particles and sludge from deep oxidation) and the detergency and di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/30G01N21/84G06F19/00G06T1/00
Inventor 郑翔陆丕清李春锋
Owner SHENZHEN YATEKS OPTICAL ELECTRONICS TECH CO LTD
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