CN115855840B - Engine oil detection method and device - Google Patents
Engine oil detection method and device Download PDFInfo
- Publication number
- CN115855840B CN115855840B CN202310153416.6A CN202310153416A CN115855840B CN 115855840 B CN115855840 B CN 115855840B CN 202310153416 A CN202310153416 A CN 202310153416A CN 115855840 B CN115855840 B CN 115855840B
- Authority
- CN
- China
- Prior art keywords
- central control
- control unit
- engine oil
- sample
- standard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to the technical field of engine oil image detection, in particular to an engine oil detection method and device, wherein the device comprises the following steps: the device comprises a sample processing unit, an image acquisition unit and a central control unit; the method comprises the following steps: step S1, a central control unit judges the state of an engine oil sample according to the real-time compression distance of a sealing pressing block on the engine oil sample; step S2, the central control unit judges the state of the engine oil sample according to the real-time compression pressure of the sealing pressing block on the engine oil sample; and S3, judging by the central control unit according to the RGB range value of the first preset color of the engine oil image, the actual brightness difference of the oil quality area of the sample and the uniform image area ratio, and determining whether the engine oil sample is qualified or not. According to the invention, the central control module rapidly judges the unqualified engine oil sample according to the comparison result of the real-time detection result and the internal preset value, and meanwhile, the state of the engine oil sample is judged through further image comparison, so that the detection efficiency is improved while the detection process is optimized.
Description
Technical Field
The invention relates to the technical field of engine oil image detection, in particular to an engine oil detection method and device.
Background
The engine oil, namely engine lubricating oil, can play roles in lubricating and antifriction, auxiliary cooling, sealing and leakage prevention, rust prevention and corrosion prevention, shock absorption and buffering and the like on an engine, is known as blood of an automobile, and consists of two parts of base oil and additive, wherein the base oil is the main component of the lubricating oil and determines the basic property of the lubricating oil, and the additive can make up and improve the defects of the base oil in performance, endow certain new performances and is an important component of the lubricating oil; in recent years, poor-quality engine oil causes a plurality of accidents, the poor-quality engine oil not only cannot play the roles, but also has a plurality of negative effects, because the poor-quality engine oil has poor viscosity-temperature characteristics and oxidation resistance, the time for pumping the engine oil to each part of an engine is prolonged, the dry friction time of the engine is prolonged, meanwhile, the poor-quality engine oil is extremely easy to oxidize and deteriorate under a high-temperature environment to lose the functions, the poor-quality engine oil has poor cleaning and dispersing properties, dust in the air sucked by the engine during the working process and carbon deposit formed after combustion cannot be cleaned, poor lubrication and serious abrasion are caused, and therefore, various sampling detection is carried out on the engine oil during the production of the engine oil, so that the production quality of the engine oil is ensured.
Chinese patent publication No.: CN104390971a discloses a method for detecting engine oil, which is characterized in that the engine oil is detected by oil absorbing paper and is compared with a comparison color lump to determine the state of the engine oil; therefore, in the prior art, a rapid mode for detecting the actual performance of the engine oil is lacking, and whether the engine oil can be normally used can be determined only by a test paper comparison mode; the engine oil is sampled and detected, and the engine oil is detected by simulating the operation of the engine, so that the detection efficiency of the engine oil is lower, and the detection result is inaccurate due to the fact that the period of the existing detection process is longer and the external influence factors have larger influence on the detection result.
Disclosure of Invention
Therefore, the invention provides a method and a device for detecting engine oil, which are used for solving the problem of lower detection efficiency caused by complex link detection operation in the engine oil production process in the prior art.
In order to achieve the above object, the present invention provides an engine oil detection apparatus comprising,
the sample processing unit is used for compressing the engine oil sample to be detected in the compression cylinder and detecting the real-time compression distance and the real-time compression pressure of the engine oil compression;
The image acquisition unit is arranged on one side of the compression cylinder and is used for acquiring an image of an engine oil sample in the compression cylinder to form an initial detection sample image;
the central control unit is respectively connected with the sample processing unit and the image acquisition unit, standard compression distance and standard compression distance difference are arranged in the central control unit, real-time compression distance difference can be calculated according to the standard compression distance and the real-time compression distance, the real-time compression distance and the calculated real-time compression distance difference are judged, and when the real-time compression distance difference does not exceed the standard compression distance difference, the central control unit judges an initial detection sample image so as to determine whether an engine oil sample is qualified or not; the interior of the central control unit is provided with a preset pressurizing pressure and a preset pressurizing pressure difference, the real-time compressing pressure difference can be calculated according to the preset pressurizing pressure and the real-time compressing pressure, and when the real-time compressing distance is lower than the standard compressing distance, the real-time compressing pressure and the calculated real-time compressing pressure difference are judged to determine whether the engine oil sample is qualified or not; and when the real-time compression distance is higher than the standard compression distance, the central control unit judges that the engine oil sample is unqualified.
Further, the sample processing unit comprises,
the compression cylinder is of a cylinder barrel-shaped structure without a cover and is used for bearing an engine oil sample to be detected, and is also provided with a window which is used for providing a visual window on the compression cylinder when the image acquisition unit acquires an image of the engine oil sample in the compression cylinder;
the sealing pressing block is arranged inside the compression cylinder and used for compressing engine oil in the compression cylinder;
the telescopic pressure rod is connected with the sealing pressing block and is used for driving the sealing pressing block to longitudinally move in the compression cylinder;
the pressure sensor is arranged at the bottom of the sealing pressing block and is used for detecting real-time compression pressure when the sealing pressing block compresses engine oil;
the infrared sensor is arranged on the sealing pressing block and used for detecting the real-time compression distance of the sealing pressing block.
Further, the central control unit is internally provided with a standard compression distance Lb and a standard compression distance difference DeltaLb, the central control unit can control the telescopic pressure rod to drive the sealing pressing block to compress engine oil in the compression cylinder at a preset compression pressure Py, the real-time compression distance Ls of the sealing pressing block is obtained through the infrared sensor, the central control unit calculates the real-time compression distance difference Deltals, deltals= |Lb-Ls| according to the real-time compression distance Ls and the standard compression distance Lb, the central control unit compares the real-time compression distance difference Deltals with the standard compression distance difference DeltaLb,
When Deltals is less than or equal to DeltaLb, the central control unit judges that the real-time compression distance difference does not exceed the standard compression distance difference, the image acquisition unit acquires an image of the engine oil sample in the pressure cylinder to generate an initial detection sample image, and the central control unit judges the initial detection sample image to determine whether the engine oil sample is qualified or not;
when Deltals > DeltaLb, the central control unit judges that the real-time compression distance difference exceeds the standard compression distance difference, and the central control unit compares the real-time compression distance Ls with the standard compression distance Lb to determine the state of the engine oil sample.
Further, the central control unit compares the real-time compression distance Ls with the standard compression distance Lb when determining that the real-time compression distance difference exceeds the standard compression distance difference,
when Ls is smaller than Lb, the central control unit judges that the real-time compression distance is smaller than the standard compression distance, and the central control unit controls the telescopic pressure rod to drive the sealing pressing block to compress engine oil in the compression cylinder at the standard compression distance Lb;
when Ls is larger than Lb, the central control unit judges that the real-time compression distance is higher than the standard compression distance, and the central control unit judges that the engine oil sample is unqualified.
Further, a preset compression pressure difference delta Py is arranged in the central control unit, when the central control unit judges that the real-time compression distance is lower than the standard compression distance, the central control unit controls the telescopic pressure rod to reset and controls the telescopic pressure rod to drive the sealing pressing block to compress engine oil in the compression cylinder by the standard compression distance Lb, the central control unit obtains the real-time compression pressure Ps of the sealing pressing block through the pressure sensor, calculates the real-time compression pressure difference delta Ps, delta Ps= |Py-Ps|, compares the real-time compression pressure difference delta Ps with the preset compression pressure difference delta Py,
When Δps is less than or equal to Δpy, the central control unit determines that the real-time compression pressure difference is not higher than a preset compression pressure difference, the image acquisition unit acquires an image of an engine oil sample in the pressure cylinder to generate an initial detection sample image, and the central control unit determines the initial detection sample image to determine whether the engine oil sample is qualified or not;
when deltaPs > deltaPy, the central control unit judges that the real-time compression pressure difference is higher than the preset compression pressure difference, and the central control unit judges that the engine oil sample is unqualified.
Further, a first standard area ratio A1 and a second standard area ratio A2 are arranged in the central control unit, wherein A1 is smaller than A2, when the image acquisition unit acquires an engine oil sample in the pressure cylinder to generate an initial detection sample image, the central control unit acquires a preset color image area Se for acquiring RGB range values of preset colors in the initial detection sample image and acquires the total area Sr of the initial detection sample image, the central control unit calculates a preset color area ratio Aj, aj=Se/Sr, and compares the preset color area ratio Aj with the first standard area ratio A1 and the second standard area ratio A2,
when Aj is smaller than A1, the central control unit judges that the preset color area ratio is lower than the first standard area ratio, and the central control unit judges that the engine oil sample is qualified;
When A1 is less than or equal to Aj is less than or equal to A2, the central control unit judges that the preset color area ratio is between the first standard area ratio and the second standard area ratio, and the central control unit compares the brightness of engine oil with the RGB range value to determine whether an engine oil sample is qualified or not;
when Aj is larger than A2, the central control unit judges that the preset color area ratio is higher than the second standard area ratio, and the central control unit judges that the engine oil sample is unqualified;
further, when the central control unit determines that the ratio of the preset color area is between the ratio of the first standard area and the ratio of the second standard area, the central control unit determines an image area outside the preset color area in the initial detection sample image as a sample oil area, acquires a maximum brightness value Lz and a minimum brightness value La of the sample oil area in the initial detection sample image, calculates an actual brightness difference Deltals of the sample oil area, deltals=Lz-La, compares the actual brightness difference Deltals of the sample oil area with the maximum brightness difference Deltalc,
when Deltals is less than or equal to DeltaLc, the central control unit judges that the actual brightness difference does not exceed the maximum brightness difference, and the central control unit acquires a uniform image area according to the average brightness value of the oil quality area of the sample to judge so as to determine whether the sample is qualified or not;
When Deltals is larger than DeltaLc, the central control unit judges that the maximum brightness value of the obtained sample oil area in the initial detection sample image is higher than the maximum brightness difference arranged in the control module, and the central control unit judges that the engine oil sample is unqualified.
Further, a first standard brightness image area ratio A3 and a second standard brightness image area ratio A4 are arranged in the central control unit, wherein A1 is more than A2 and less than A3 and less than A4, standard deviation brightness Lu is also arranged in the central control unit, when the central control unit judges that the actual brightness difference does not exceed the maximum brightness difference, the central control unit obtains an average brightness value Lp of a sample oil quality area, calculates the first standard brightness L1 and the second standard brightness L2, wherein L1=lp-Lz, L2=lp+lz, obtains a uniform image area So of a real-time brightness value between the first standard brightness L1 and the second standard brightness L2 in the sample oil quality area, calculates a uniform image area ratio Ao, ao=so/(Sr-Se),
when Ao is smaller than A3, the central control unit judges that the uniform image area occupation ratio is smaller than the first standard brightness image area occupation ratio, and the central control unit judges that the engine oil sample is unqualified;
when A3 is more than or equal to Ao is more than or equal to A4, the central control unit judges that the uniform image area ratio is between the first standard brightness image area ratio and the second standard brightness image area ratio, and the central control unit judges the RGB value of each pixel of the sample oil area in the initial detection sample image so as to determine whether the engine oil sample is qualified or not;
When Ao is more than A4, the central control unit judges that the uniform image area occupation ratio is more than the second standard brightness image area occupation ratio, and the central control unit judges that the engine oil sample is qualified.
Further, the central control unit is internally provided with RGB range values of a second preset color, when the central control unit judges that the uniform image area occupied ratio is between the first standard brightness image area occupied ratio and the second standard brightness image area occupied ratio, the central control unit compares each pixel RGB value of the sample oil quality area in the initial detection sample image with the RGB range value of the second preset color,
if the RGB value of any pixel in the oil quality area of the sample is not in the RGB range value of the second preset color, the central control unit judges that the engine oil sample is unqualified;
and if the RGB values of all pixels in the oil quality area of the sample are within the RGB range value of the second preset color, the central control unit judges that the engine oil sample is qualified.
The invention also provides an engine oil detection method which is applied to any engine oil detection device, and comprises the steps of,
step S1, compressing an engine oil sample in the compression cylinder by controlling the sealing pressing block to preset pressurizing pressure, judging the real-time compression distance of the sealing pressing block detected by the infrared sensor by arranging a central control unit, and determining the state of the engine oil sample;
S2, compressing an engine oil sample in the compression cylinder at a standard compression distance by controlling the sealing pressing block, judging the real-time compression pressure of the sealing pressing block detected by the pressure sensor by arranging a central control unit, and determining the state of the engine oil sample;
and S3, carrying out image acquisition on the engine oil sample in the compression cylinder through the image acquisition unit, and judging the actual brightness difference and the uniform image area occupation ratio of the sample oil area of the RGB range value of the first preset color of the image through the central control unit to determine whether the engine oil sample is qualified or not.
Compared with the prior art, the engine oil sample compression device has the advantages that the engine oil sample is compressed through the sample processing unit, the real-time compression distance and the real-time compression pressure are detected, the comparison and judgment are carried out between the real-time compression distance and the real-time compression pressure according to the detection result through the central control module, the unqualified engine oil sample is judged in an express mode, the follow-up complex detection is not needed for the detected unqualified engine oil sample, the detection efficiency of the engine oil sample is greatly improved, the image acquisition unit is arranged for carrying out image acquisition on the engine oil sample, the primary detection sample image is judged according to the RGB range value of the first preset color, the sample oil quality area of the RGB range value of the second preset color, the actual brightness difference and the uniform image area ratio through the central control module, the post-compression precipitation degree of engine oil and the uniformity of engine oil color are accurately reflected, the engine oil detection is accurately and effectively compared with all the standard values set in the engine oil detection, the fault detection is carried out through the image acquisition during the engine oil detection, the state of the engine oil sample is accurately detected, the detection result is accurately reflected on the image, the detection process is optimized, and the detection efficiency is improved.
Further, through setting up the compression jar, sealed briquetting, flexible pressure bar, the three cooperation can be treated the engine oil sample that detects and compress and detect, well accuse unit is according to the compression testing result, judge the state of engine oil sample, through setting up pressure sensor in sealed briquetting bottom, at the compression testing process, the real-time pressure value of sealed briquetting to engine oil sample that can be accurate, for forming the image of just examining the sample and provide data support, through the infrared sensor that sets up on sealed briquetting, can be accurate at the real-time compression distance of compression testing process engine oil sample, and for just examining the image of sample and provide data support, the accuracy of testing result has not only been guaranteed, the convenience of operation has also been embodied simultaneously.
In particular, the real-time compression distance difference is acquired through the standard compression distance arranged in the central control module and the real-time compression distance acquired by the infrared sensor, and is compared with the standard compression distance difference arranged in the central control module, so that the state of the engine oil sample can be primarily judged, and not only is the effective data support provided for the follow-up determination of the state of the engine oil sample, but also the accuracy of the detection result is improved.
Further, under the state that the real-time compression distance difference exceeds the standard compression distance difference through the central control module, the real-time compression distance of the sealing pressing block is compared with the standard compression distance, an unqualified engine oil sample can be judged according to the result, support is provided for detecting the qualified engine oil sample, and the accuracy of a subsequent detection result is ensured.
In particular, the real-time compression pressure difference obtained through the pressure sensor is compared with the preset compression pressure difference arranged in the central control unit, the central control unit can judge an unqualified engine oil sample according to a comparison result, meanwhile, data support is provided for a sample image which is generated by the image acquisition unit and is initially detected, and reliability of a detection result is guaranteed.
Further, in the primary detection sample image, the preset color area ratio calculated by the central control unit is compared with the first standard area ratio and the second standard area ratio which are arranged in the central control unit, so that a qualified engine oil sample and an unqualified engine oil sample can be obtained, and when the preset color area ratio is between the first standard area ratio and the second standard area ratio, data support is provided for subsequent engine oil sample uniformity detection, and meanwhile, the accuracy of an engine oil detection result and the reliability of the engine oil detection result are also ensured.
In particular, by comparing the actual brightness difference and the maximum brightness difference reflected in the primary detection sample image, the unqualified engine oil sample can be effectively determined when the preset color area ratio is determined to be between the first standard area ratio and the second standard area ratio, and meanwhile, a data basis is provided for determining whether the engine oil sample is qualified or not according to the average brightness value of the oil quality area of the sample, so that the accuracy of the detection result is further ensured.
Further, under the condition that the actual brightness difference is not beyond the maximum brightness difference, the central control unit is used for comparing the uniform image area in the initial detection sample image with the first standard brightness image area occupied ratio and the second standard brightness image area occupied ratio which are arranged in the central control unit, so that a qualified engine oil sample and an unqualified engine oil sample can be detected, and meanwhile, when the central control unit is used for judging that the uniform image area occupied ratio is between the first standard brightness image area occupied ratio and the second standard brightness image area occupied ratio, data support can be provided for further detecting each pixel RGB value of a sample oil area in the initial detection sample image, and the accuracy of a final detection result is effectively guaranteed.
In particular, under the condition that the central control unit judges that the uniform image area ratio is between the first standard brightness image area ratio and the second standard brightness image area ratio, the RGB values of the pixels in the oil area of the sample and the RGB range values of the second preset color are compared, so that a qualified engine oil sample and an unqualified engine oil sample can be accurately obtained, meanwhile, by combining all the judging results of the previous central control module, the qualified engine oil sample and the unqualified engine oil sample can be accurately judged, the accuracy of the detecting result is improved, and meanwhile, the detection is more convenient than other engine oil detecting devices.
Further, through being provided with the well accuse unit, control the sealed briquetting and compress the engine oil sample in the compression jar, afterwards judge according to real-time compression distance to confirm engine oil sample state, well accuse module still is according to the real-time compression pressure of the sealed briquetting that pressure sensor detected simultaneously, judge engine oil sample state, and through the image that image acquisition unit produced, contrast the RGB range value of first preset colour, the actual luminance difference and the even image area ratio in sample oily region, finally confirm whether engine oil sample is qualified, whether this method not only can accurately survey engine oil sample is qualified, but also has easy operation simultaneously, the reliable advantage of testing result.
Drawings
Fig. 1 is a schematic diagram of the engine oil detection apparatus according to the present embodiment;
fig. 2 is a flowchart of an engine oil detection method according to the present embodiment.
Detailed Description
In order that the objects and advantages of the invention will become more apparent, the invention will be further described with reference to the following examples; it should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that, in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Referring to fig. 1, which is a schematic structural diagram of an engine oil detection device according to the present embodiment, the present disclosure discloses an engine oil detection device in real time, which includes a sample processing unit 1, an image acquisition unit 2, a compression cylinder 101, a sealing pressing block 102, a telescopic pressure rod 103, a pressure sensor 104, an infrared sensor 105, and a central control unit 3, wherein,
the sample processing unit is used for compressing the engine oil sample to be detected in the compression cylinder and detecting the real-time compression distance and the real-time compression pressure of the engine oil compression;
the image acquisition unit is arranged on one side of the compression cylinder and is used for acquiring an image of an engine oil sample in the compression cylinder to form an initial detection sample image;
the central control unit is respectively connected with the sample processing unit and the image acquisition unit, standard compression distance and standard compression distance difference are arranged in the central control unit, real-time compression distance difference can be calculated according to the standard compression distance and the real-time compression distance, the real-time compression distance and the calculated real-time compression distance difference are judged, and when the real-time compression distance difference does not exceed the standard compression distance difference, the central control unit judges an initial detection sample image so as to determine whether an engine oil sample is qualified or not; the interior of the central control unit is provided with a preset pressurizing pressure and a preset pressurizing pressure difference, the real-time compressing pressure difference can be calculated according to the preset pressurizing pressure and the real-time compressing pressure, and when the real-time compressing distance is lower than the standard compressing distance, the real-time compressing pressure and the calculated real-time compressing pressure difference are judged to determine whether the engine oil sample is qualified or not; and when the real-time compression distance is higher than the standard compression distance, the central control unit judges that the engine oil sample is unqualified.
The engine oil sample is compressed through the sample processing unit, the real-time compression distance and the real-time compression pressure are detected, the comparison and judgment are carried out between the real-time compression distance and the real-time compression pressure according to the detection result through the central control module, the unqualified engine oil sample is judged in a express way, the follow-up complex detection is not needed for the detected unqualified engine oil sample, the detection efficiency of the engine oil sample is greatly improved, the image acquisition unit is arranged for carrying out image acquisition on the engine oil sample, the initial detection sample image is judged according to the RGB range value of the first preset color, the sample oil area of the RGB range value of the second preset color, the actual brightness difference and the uniform image area ratio through the central control module, the precipitation degree after the compression of engine oil and the uniformity of the engine oil color are accurately reflected, the engine oil color is accurately compared with the standard values set in the internal part, the engine oil detection is accurately and efficiently carried out, the fault detection is carried out through the image acquisition during the engine oil detection, the state of the engine oil sample is accurately detected, the detection result can be accurately reflected on the image, and the detection efficiency is improved while the detection process is optimized.
In this embodiment, the detected oil sample is an oil semi-finished product in an oil production link, and is used for rapid detection and classification during oil production, and the detection mode can also be used for oil detection with special requirements, such as single detection of color, uniformity, precipitation degree and the like, but is not used for quality detection of finished oil.
In this embodiment, the image acquisition unit includes a camera, an illuminator and a processor, where the camera may be an industrial camera, a high-definition camera, or a high-speed camera, which only needs to meet the image acquisition requirement of the image acquisition unit in this embodiment, and this is not described again; the illuminator can be an incandescent lamp, a tungsten lamp or an LED lamp, and can meet the illumination requirement of the image acquisition unit in image acquisition in the implementation, and the description is omitted; the processor may be an image acquisition card, a GPU, or an AI processor, which only needs to meet the image processing requirement of the image acquisition unit in this embodiment, which is not described herein.
In particular, the sample processing unit comprises,
the compression cylinder is of a cylinder barrel-shaped structure without a cover and is used for bearing an engine oil sample to be detected, and is also provided with a window which is used for providing a visual window on the compression cylinder when the image acquisition unit acquires an image of the engine oil sample in the compression cylinder;
The sealing pressing block is arranged inside the compression cylinder and used for compressing engine oil in the compression cylinder;
the telescopic pressure rod is connected with the sealing pressing block and is used for driving the sealing pressing block to longitudinally move in the compression cylinder;
the pressure sensor is arranged at the bottom of the sealing pressing block and is used for detecting real-time compression pressure when the sealing pressing block compresses engine oil;
the infrared sensor is arranged on the sealing pressing block and used for detecting the real-time compression distance of the sealing pressing block.
In this embodiment, the setting position of the image capturing unit is in a relative relationship with the setting position of the window on one side of the compression cylinder, that is, the image capturing unit may capture an image of the engine oil sample in the compression cylinder through the window, and those skilled in the art will understand that the compression cylinder may be provided with the window, so that the cylinder body material of the compression cylinder may be set to be a transparent material that can withstand high pressure.
Through setting up the compression jar, sealed briquetting, flexible pressure bar, the three cooperation can be treated the engine oil sample that detects and compress and detect, well accuse unit is according to compression testing result, judge the state of engine oil sample, through set up pressure sensor in sealed briquetting bottom, at compression testing process, the real-time pressure value of sealed briquetting to engine oil sample that can be accurate, provide data support for forming the image of just examining the sample, through the infrared sensor that sets up on sealed briquetting, can be accurate at compression testing process engine oil sample's real-time compression distance, and provide data support for the image of just examining the sample, the accuracy of testing result has not only been guaranteed, the convenience of operation has also been embodied simultaneously.
Specifically, the central control unit is internally provided with a standard compression distance Lb and a standard compression distance difference DeltaLb, the central control unit can control the telescopic pressure rod to drive the sealing pressing block to compress engine oil in the compression cylinder at a preset compression pressure Py, the real-time compression distance Ls of the sealing pressing block is obtained through the infrared sensor, the central control unit calculates the real-time compression distance difference Deltals, deltals= |Lb-Ls| according to the real-time compression distance Ls and the standard compression distance Lb, the central control unit compares the real-time compression distance difference Deltals with the standard compression distance difference DeltaLb,
when Deltals is less than or equal to DeltaLb, the central control unit judges that the real-time compression distance difference does not exceed the standard compression distance difference, the image acquisition unit acquires an image of the engine oil sample in the pressure cylinder to generate an initial detection sample image, and the central control unit judges the initial detection sample image to determine whether the engine oil sample is qualified or not;
when Deltals > DeltaLb, the central control unit judges that the real-time compression distance difference exceeds the standard compression distance difference, and the central control unit compares the real-time compression distance Ls with the standard compression distance Lb to determine the state of the engine oil sample.
The real-time compression distance difference is acquired through the standard compression distance arranged in the central control module and the real-time compression distance acquired by the infrared sensor, and is compared with the standard compression distance difference arranged in the central control module, so that the state of the engine oil sample can be primarily judged, and not only is the effective data support provided for the follow-up determination of the state of the engine oil sample, but also the accuracy of the detection result is improved.
Specifically, the central control unit compares the real-time compression distance Ls with the standard compression distance Lb when determining that the real-time compression distance difference exceeds the standard compression distance difference,
when Ls is smaller than Lb, the central control unit judges that the real-time compression distance is smaller than the standard compression distance, and the central control unit controls the telescopic pressure rod to drive the sealing pressing block to compress engine oil in the compression cylinder at the standard compression distance Lb;
when Ls is larger than Lb, the central control unit judges that the real-time compression distance is higher than the standard compression distance, and the central control unit judges that the engine oil sample is unqualified.
And under the state that the real-time compression distance difference exceeds the standard compression distance difference, the real-time compression distance of the sealing pressing block is compared with the standard compression distance, an unqualified engine oil sample can be determined according to the result, support is provided for detecting the qualified engine oil sample, and the accuracy of a subsequent detection result is ensured.
Specifically, a preset compression pressure difference delta Py is arranged in the central control unit, when the central control unit judges that the real-time compression distance is lower than the standard compression distance, the central control unit controls the telescopic pressure rod to reset and controls the telescopic pressure rod to drive the sealing pressing block to compress engine oil in the compression cylinder at the standard compression distance Lb, the central control unit obtains the real-time compression pressure Ps of the sealing pressing block through the pressure sensor, calculates the real-time compression pressure difference delta Ps, delta Ps= |Py-Ps|, compares the real-time compression pressure difference delta Ps with the preset compression pressure difference delta Py,
When Δps is less than or equal to Δpy, the central control unit determines that the real-time compression pressure difference is not higher than a preset compression pressure difference, the image acquisition unit acquires an image of an engine oil sample in the pressure cylinder to generate an initial detection sample image, and the central control unit determines the initial detection sample image to determine whether the engine oil sample is qualified or not;
when deltaPs > deltaPy, the central control unit judges that the real-time compression pressure difference is higher than the preset compression pressure difference, and the central control unit judges that the engine oil sample is unqualified.
The real-time compression pressure difference obtained through the pressure sensor is compared with the preset compression pressure difference arranged in the central control unit, the central control unit can judge an unqualified engine oil sample according to a comparison result, meanwhile, data support is provided for a sample image which is generated by the image acquisition unit and is detected initially, and reliability of a detection result is guaranteed.
Specifically, a first standard area ratio A1 and a second standard area ratio A2 are arranged in the central control unit, wherein A1 is smaller than A2, when the image acquisition unit acquires an engine oil sample in the pressure cylinder to generate an initial detection sample image, the central control unit acquires a preset color image area Se for acquiring RGB range values of preset colors in the initial detection sample image and acquires the total area Sr of the initial detection sample image, the central control unit calculates a preset color area ratio Aj, aj=Se/Sr, and compares the preset color area ratio Aj with the first standard area ratio A1 and the second standard area ratio A2,
When Aj is smaller than A1, the central control unit judges that the preset color area ratio is lower than the first standard area ratio, and the central control unit judges that the engine oil sample is qualified;
when A1 is less than or equal to Aj is less than or equal to A2, the central control unit judges that the preset color area ratio is between the first standard area ratio and the second standard area ratio, and the central control unit compares the brightness of engine oil with the RGB range value to determine whether an engine oil sample is qualified or not;
when Aj is larger than A2, the central control unit judges that the preset color area ratio is higher than the second standard area ratio, and the central control unit judges that the engine oil sample is unqualified;
in this embodiment, the RGB range value of the first preset color is selected as the bubble precipitation area of the engine oil sample, the RGB range value of the first preset color is set to 245-255:245-255, meanwhile, the RGB range value of the first preset color can be selected according to the detected defect type of the engine oil sample, the defect type such as bubble precipitation and impurities in the engine oil is selected, meanwhile, the first standard area ratio A1 and the second standard area ratio A2 of parameters should be adaptively set with the detected oil and the screening classification condition of the engine oil, the first standard area ratio A1 set in this embodiment is the image ratio of the bubble or impurity precipitation area allowed to pass through screening, and the second standard area ratio A2 is the image ratio of the bubble or impurity precipitation area not allowed to pass through screening.
And comparing the preset color area ratio calculated by the central control unit with the first standard area ratio and the second standard area ratio which are arranged in the central control unit in the initial detection sample image, so that a qualified engine oil sample and an unqualified engine oil sample can be obtained, and when the preset color area ratio is between the first standard area ratio and the second standard area ratio, data support is provided for subsequent engine oil sample uniformity detection, and meanwhile, the accuracy of an engine oil detection result and the reliability of the result are also ensured.
Specifically, when the central control unit determines that the preset color area ratio is between the first standard area ratio and the second standard area ratio, the central control unit determines an image area outside the preset color area in the initial detection sample image as a sample oil area, acquires a maximum brightness value Lz and a minimum brightness value La of the sample oil area in the initial detection sample image, calculates an actual brightness difference Deltals of the sample oil area, deltals=Lz-La, compares the actual brightness difference Deltals of the sample oil area with the maximum brightness difference Deltalc,
when Deltals is less than or equal to DeltaLc, the central control unit judges that the actual brightness difference does not exceed the maximum brightness difference, and the central control unit acquires a uniform image area according to the average brightness value of the oil quality area of the sample to judge so as to determine whether the sample is qualified or not;
When Deltals is larger than DeltaLc, the central control unit judges that the maximum brightness value of the obtained sample oil area in the initial detection sample image is higher than the maximum brightness difference arranged in the control module, and the central control unit judges that the engine oil sample is unqualified.
By comparing the actual brightness difference and the maximum brightness difference reflected in the primary detection sample image, the unqualified engine oil sample can be effectively determined when the preset color area ratio is determined to be between the first standard area ratio and the second standard area ratio, and meanwhile, a data basis is provided for determining whether the engine oil sample is qualified or not according to the average brightness value of the oil area of the sample later, so that the accuracy of a detection result is further ensured.
Specifically, a first standard brightness image area ratio A3 and a second standard brightness image area ratio A4 are arranged in the central control unit, wherein A1 is more than A2 and less than A3 and less than A4, standard deviation brightness Lu is also arranged in the central control unit, when the central control unit judges that the actual brightness difference does not exceed the maximum brightness difference, the central control unit obtains an average brightness value Lp of a sample oil quality area, calculates the first standard brightness L1 and the second standard brightness L2, wherein L1=lp-Lz, L2=lp+lz, obtains a uniform image area So of a real-time brightness value between the first standard brightness L1 and the second standard brightness L2 in the sample oil quality area, calculates a uniform image area ratio Ao, ao=so/(Sr-Se),
When Ao is smaller than A3, the central control unit judges that the uniform image area occupation ratio is smaller than the first standard brightness image area occupation ratio, and the central control unit judges that the engine oil sample is unqualified;
when A3 is more than or equal to Ao is more than or equal to A4, the central control unit judges that the uniform image area ratio is between the first standard brightness image area ratio and the second standard brightness image area ratio, and the central control unit judges the RGB value of each pixel of the sample oil area in the initial detection sample image so as to determine whether the engine oil sample is qualified or not;
when Ao is more than A4, the central control unit judges that the uniform image area occupation ratio is more than the second standard brightness image area occupation ratio, and the central control unit judges that the engine oil sample is qualified.
In this embodiment, the first standard brightness image area ratio A3 is selected as the area ratio of the uniform oil quality area allowed to pass through the screening, the second standard brightness image area ratio A4 is selected as the area ratio of the uniform oil quality area not allowed to pass through the screening, and in the actual detection process, the screening standard adaptability setting of the engine oil production link should be combined. And comparing the uniform image area in the initial detection sample image with the first standard brightness image area occupied ratio and the second standard brightness image area occupied ratio which are arranged in the central control unit under the condition that the actual brightness difference is not beyond the maximum brightness difference, so that a qualified engine oil sample and an unqualified engine oil sample can be detected, and simultaneously, when the central control unit judges that the uniform image area occupied ratio is between the first standard brightness image area occupied ratio and the second standard brightness image area occupied ratio, data support can be provided for the RGB values of each pixel of the sample oil area in the initial detection sample image for further detection.
Specifically, the central control unit is internally provided with RGB range values of a second preset color, when the central control unit judges that the uniform image area occupied ratio is between the first standard brightness image area occupied ratio and the second standard brightness image area occupied ratio, the central control unit compares each pixel RGB value of the sample oil quality area in the initial detection sample image with the RGB range value of the second preset color,
if the RGB value of any pixel in the oil quality area of the sample is not in the RGB range value of the second preset color, the central control unit judges that the engine oil sample is unqualified;
and if the RGB values of all pixels in the oil quality area of the sample are within the RGB range value of the second preset color, the central control unit judges that the engine oil sample is qualified.
Wherein, RGB range value of the second preset color is set according to the detected actual color of the engine oil sample.
Through judging at the central control unit that even image area ratio is under the condition between first standard luminance image area ratio and second standard luminance image area ratio, compare the RGB value of pixel in the oily region of sample with the RGB range value of second preset colour, can accurately obtain qualified engine oil sample, and unqualified engine oil sample, simultaneously, combine the all decision results of preceding central control module, can be accurate judge qualified engine oil sample and unqualified engine oil sample, not only improved the accuracy of testing result, it is more convenient simultaneously to compare other engine oil detection device.
Referring to fig. 2, which is a flowchart illustrating an engine oil detection method according to the present embodiment, the present embodiment further provides an engine oil detection method, including,
step S1, compressing an engine oil sample in the compression cylinder by controlling the sealing pressing block to preset pressurizing pressure, judging the real-time compression distance of the sealing pressing block detected by the infrared sensor by arranging a central control unit, and determining the state of the engine oil sample;
s2, compressing an engine oil sample in the compression cylinder at a standard compression distance by controlling the sealing pressing block, judging the real-time compression pressure of the sealing pressing block detected by the pressure sensor by arranging a central control unit, and determining the state of the engine oil sample;
and S3, carrying out image acquisition on the engine oil sample in the compression cylinder through the image acquisition unit, and judging the actual brightness difference and the uniform image area occupation ratio of the sample oil area of the RGB range value of the first preset color of the image through the central control unit to determine whether the engine oil sample is qualified or not.
Through being provided with the well accuse unit, control the sealed briquetting and compress the engine oil sample in the compression jar, later judge according to real-time compression distance to confirm engine oil sample state, well accuse module still is according to the real-time compression pressure of the sealed briquetting that pressure sensor detected simultaneously, judge engine oil sample state, and through the image that image acquisition unit produced, contrast the RGB scope value of first preset colour, the actual luminance difference and the even image area ratio in oily region of sample, finally confirm whether the engine oil sample is qualified, whether this method not only can accurately survey the engine oil sample is qualified, easy operation has still concurrently been had simultaneously, the reliable advantage of testing result.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. An engine oil detection device, characterized by comprising:
the sample processing unit is used for compressing the engine oil sample to be detected in the compression cylinder and detecting the real-time compression distance and the real-time compression pressure of the engine oil compression;
the image acquisition unit is arranged on one side of the compression cylinder and is used for acquiring an image of an engine oil sample in the compression cylinder to form an initial detection sample image;
The central control unit is respectively connected with the sample processing unit and the image acquisition unit;
the sample processing unit may comprise a sample processing device,
the compression cylinder is of a cylinder barrel-shaped structure without a cover and is used for bearing an engine oil sample to be detected;
the sealing pressing block is arranged inside the compression cylinder and used for compressing engine oil in the compression cylinder;
the telescopic pressure rod is connected with the sealing pressing block and is used for driving the sealing pressing block to longitudinally move in the compression cylinder;
the pressure sensor is arranged at the bottom of the sealing pressing block and is used for detecting real-time compression pressure when the sealing pressing block compresses engine oil;
the infrared sensor is arranged at the upper part of the sealing pressing block and used for detecting the real-time compression distance of the sealing pressing block;
the central control unit is internally provided with a standard compression distance Lb and a standard compression distance difference delta Lb, can control the telescopic pressure rod to drive the sealing pressing block to compress engine oil in the compression cylinder by a preset compression pressure Py, acquires a real-time compression distance Ls of the sealing pressing block through the infrared sensor, calculates the real-time compression distance difference delta Ls, delta ls= |Lb-ls| according to the real-time compression distance Ls and the standard compression distance Lb, compares the real-time compression distance difference delta Ls with the standard compression distance difference delta Lb,
When Deltals is less than or equal to DeltaLb, the central control unit judges that the real-time compression distance difference does not exceed the standard compression distance difference, the image acquisition unit acquires an image of the engine oil sample in the compression cylinder to generate an initial detection sample image, and the central control unit judges the initial detection sample image to determine whether the engine oil sample is qualified or not;
when Deltals is larger than DeltaLb, the central control unit judges that the real-time compression distance difference exceeds the standard compression distance difference, and compares the real-time compression distance Ls with the standard compression distance Lb to determine the state of the engine oil sample;
when the central control unit judges that the real-time compression distance difference exceeds the standard compression distance difference, the real-time compression distance Ls is compared with the standard compression distance Lb,
when Ls is smaller than Lb, the central control unit judges that the real-time compression distance is smaller than the standard compression distance, and the central control unit controls the telescopic pressure rod to drive the sealing pressing block to compress engine oil in the compression cylinder at the standard compression distance Lb;
when Ls is larger than Lb, the central control unit judges that the real-time compression distance is higher than the standard compression distance, and the central control unit judges that the engine oil sample is unqualified;
the central control unit is internally provided with a preset compression pressure difference delta Py, when the central control unit judges that the real-time compression distance is lower than the standard compression distance, the central control unit controls the telescopic pressure rod to reset and controls the telescopic pressure rod to drive the sealing pressing block to compress engine oil in the compression cylinder by the standard compression distance Lb, the central control unit obtains the real-time compression pressure Ps of the sealing pressing block through the pressure sensor, calculates the real-time compression pressure difference delta Ps, delta Ps= |Py-Ps|, the central control unit compares the real-time compression pressure difference delta Ps with the preset compression pressure difference delta Py,
When Δps is less than or equal to Δpy, the central control unit determines that the real-time compression pressure difference is not higher than a preset compression pressure difference, the image acquisition unit acquires an image of an engine oil sample in the compression cylinder to generate an initial detection sample image, and the central control unit determines the initial detection sample image to determine whether the engine oil sample is qualified or not;
when deltaPs is larger than deltaPy, the central control unit judges that the real-time compression pressure difference is higher than the preset compression pressure difference, and the central control unit judges that the engine oil sample is unqualified;
the central control unit is internally provided with a first standard area duty ratio A1 and a second standard area duty ratio A2, wherein A1 is smaller than A2, when the image acquisition unit acquires an engine oil sample in the compression cylinder to generate an initial detection sample image, the central control unit acquires a preset color image area Se for acquiring RGB range values of preset colors in the initial detection sample image and acquires the total area Sr of the initial detection sample image, the central control unit calculates a preset color area duty ratio Aj, aj=Se/Sr, compares the preset color area duty ratio Aj with the first standard area duty ratio A1 and the second standard area duty ratio A2,
when Aj is smaller than A1, the central control unit judges that the preset color area ratio is lower than the first standard area ratio, and the central control unit judges that the engine oil sample is qualified;
When A1 is less than or equal to Aj is less than or equal to A2, the central control unit judges that the preset color area ratio is between the first standard area ratio and the second standard area ratio, and the central control unit compares the brightness of engine oil with the RGB range value to determine whether an engine oil sample is qualified or not;
when Aj is larger than A2, the central control unit judges that the preset color area ratio is higher than the second standard area ratio, and the central control unit judges that the engine oil sample is unqualified;
when the central control unit judges that the preset color area ratio is between the first standard area ratio and the second standard area ratio, the central control unit determines an image area outside the preset color area in the initial detection sample image as a sample oil quality area, acquires a maximum brightness value Lz and a minimum brightness value La of the sample oil quality area in the initial detection sample image, calculates an actual brightness difference Deltals of the sample oil quality area, deltals=Lz-La, compares the actual brightness difference Deltals of the sample oil quality area with the maximum brightness difference Deltalc,
when Deltals is less than or equal to DeltaLc, the central control unit judges that the actual brightness difference does not exceed the maximum brightness difference, and the central control unit acquires a uniform image area according to the average brightness value of the oil quality area of the sample to judge so as to determine whether the sample is qualified or not;
When Deltals is larger than DeltaLc, the central control unit judges that the maximum brightness value of the obtained sample oil area in the initial detection sample image is higher than the maximum brightness difference arranged in the control module, and the central control unit judges that the engine oil sample is unqualified;
the central control unit is internally provided with a first standard brightness image area occupation ratio A3 and a second standard brightness image area occupation ratio A4, wherein A1 is more than A2 and less than A3 and less than A4, the central control unit is internally provided with a standard deviation brightness Lu, when the central control unit judges that the actual brightness difference does not exceed the maximum brightness difference, the central control unit obtains an average brightness value Lp of a sample oil quality area, calculates the first standard brightness L1 and the second standard brightness L2, wherein L1=lp-Lz, L2=lp+lz, the central control unit obtains a uniform image area So of a real-time brightness value between the first standard brightness L1 and the second standard brightness L2 in the sample oil quality area, calculates a uniform image area occupation ratio Ao, ao=so/(Sr-Se),
when Ao is smaller than A3, the central control unit judges that the uniform image area occupation ratio is smaller than the first standard brightness image area occupation ratio, and the central control unit judges that the engine oil sample is unqualified;
when A3 is more than or equal to Ao is more than or equal to A4, the central control unit judges that the uniform image area ratio is between the first standard brightness image area ratio and the second standard brightness image area ratio, and the central control unit judges the RGB value of each pixel of the sample oil area in the initial detection sample image so as to determine whether the engine oil sample is qualified or not;
When Ao is more than A4, the central control unit judges that the uniform image area occupation ratio is more than the second standard brightness image area occupation ratio, and the central control unit judges that the engine oil sample is qualified;
the central control unit is internally provided with RGB range values of a second preset color, when the central control unit judges that the uniform image area occupied ratio is between the first standard brightness image area occupied ratio and the second standard brightness image area occupied ratio, the central control unit compares each pixel RGB value of the sample oil quality area in the initial detection sample image with the RGB range value of the second preset color,
if the RGB value of any pixel in the oil quality area of the sample is not in the RGB range value of the second preset color, the central control unit judges that the engine oil sample is unqualified;
and if the RGB values of all pixels in the oil quality area of the sample are within the RGB range value of the second preset color, the central control unit judges that the engine oil sample is qualified.
2. An engine oil detection method based on the engine oil detection apparatus according to claim 1, characterized by comprising:
step S1, compressing an engine oil sample in the compression cylinder by controlling the sealing pressing block to preset pressurizing pressure, judging the real-time compression distance of the sealing pressing block detected by the infrared sensor by arranging a central control unit, and determining the state of the engine oil sample;
S2, compressing an engine oil sample in the compression cylinder at a standard compression distance by controlling the sealing pressing block, judging the real-time compression pressure of the sealing pressing block detected by the pressure sensor by arranging a central control unit, and determining the state of the engine oil sample;
and S3, carrying out image acquisition on the engine oil sample in the compression cylinder through the image acquisition unit, and judging whether the engine oil sample is qualified or not through the RGB range value of the first preset color of the image, the actual brightness difference of the oil area of the sample and the uniform image area ratio through the central control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310153416.6A CN115855840B (en) | 2023-02-23 | 2023-02-23 | Engine oil detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310153416.6A CN115855840B (en) | 2023-02-23 | 2023-02-23 | Engine oil detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115855840A CN115855840A (en) | 2023-03-28 |
| CN115855840B true CN115855840B (en) | 2023-05-12 |
Family
ID=85658726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310153416.6A Active CN115855840B (en) | 2023-02-23 | 2023-02-23 | Engine oil detection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115855840B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118059770A (en) * | 2024-04-25 | 2024-05-24 | 苏州纽姆特纳米科技有限公司 | Powder material cladding process based on fluidized bed |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008170325A (en) * | 2007-01-12 | 2008-07-24 | Seiko Epson Corp | Stain flaw detection method and stain flaw detection device |
| CN114673474A (en) * | 2022-05-10 | 2022-06-28 | 东北石油大学 | Intelligent control device based on oil well |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4213044A (en) * | 1978-12-18 | 1980-07-15 | Whatman Reeve Angel Limited | Method and apparatus for determining oil mist in compressed air |
| RU2187092C1 (en) * | 2001-05-28 | 2002-08-10 | Закрытое акционерное общество Московское конструкторское бюро "Параллель" | Method of check of quality of petroleum products, fuels and lubricants |
| JP2004053477A (en) * | 2002-07-22 | 2004-02-19 | Dainippon Printing Co Ltd | Color irregularity inspecting method and apparatus |
| RU2519520C1 (en) * | 2012-12-24 | 2014-06-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Томский государственный архитектурно-строительный университет" (ТГАСУ) | Detection of impurities in of working oil and estimation of its fouling for determination of conditions of machine assembly units and parts |
| CN105065085B (en) * | 2015-07-31 | 2017-11-10 | 吉林大学 | The machine oil quality on-line monitoring system and its method of a kind of multi-sensor information fusion |
| CN106442341B (en) * | 2016-09-19 | 2018-11-20 | 武汉材料保护研究所 | A kind of petrol engine lubricating oil oxidation stability measuring method based on spot test |
| CN106771094B (en) * | 2017-01-17 | 2018-10-02 | 中国石油大学(华东) | A kind of gelled crude compression system safety testing device and method based on hermetically sealed method |
| CN108625926A (en) * | 2017-03-21 | 2018-10-09 | 北京爱德盛业科技有限公司 | A method of Lubricant of Automobile Engine is detected based on mobile intelligent terminal |
| CN217132795U (en) * | 2021-11-24 | 2022-08-05 | 南开大学 | Unconfined hydrogel compression performance testing device capable of monitoring compression sectional area |
| CN114646595A (en) * | 2022-03-11 | 2022-06-21 | 南京信息职业技术学院 | Lubricating oil detection device and detection method thereof |
-
2023
- 2023-02-23 CN CN202310153416.6A patent/CN115855840B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008170325A (en) * | 2007-01-12 | 2008-07-24 | Seiko Epson Corp | Stain flaw detection method and stain flaw detection device |
| CN114673474A (en) * | 2022-05-10 | 2022-06-28 | 东北石油大学 | Intelligent control device based on oil well |
Non-Patent Citations (1)
| Title |
|---|
| 图像RGB数值衍生的欧氏距离用于手机比色法检测石油类物质;王嘉辉;吴限;李丽华;冯恩临;吴丽;;分析测试学报(第07期);881-886 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115855840A (en) | 2023-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115855840B (en) | Engine oil detection method and device | |
| CN110296997B (en) | Method and device for detecting defects of ceramic tiles based on machine vision | |
| CN101539528B (en) | Method for detecting lubricating oil water content by utilizing image sensor | |
| CN102183528A (en) | Defect detection device and method of duplicate gear | |
| US20090046922A1 (en) | Surface Inspecting Apparatus | |
| CN115439452B (en) | Capacitance product detection and evaluation system based on data analysis | |
| EP3534151B1 (en) | Inspection apparatus, inspection system, and inspection method | |
| CN111307812A (en) | Welding spot appearance detection method based on machine vision | |
| US20110058031A1 (en) | Image processing measuring apparatus and image processing measurement method | |
| CN111443509B (en) | Method for detecting black-white spots and flicker defects of LCD (liquid crystal display) | |
| CN112718552A (en) | Automatic quality defect inspection device for LED circuit board and working method thereof | |
| CN106093051A (en) | Paper roll tangent plane burr detection method based on machine vision and device | |
| CN108072664A (en) | A kind of appearance detecting system and method | |
| CN116229856B (en) | Automatic control screen detection system and method for computer | |
| CN113763322B (en) | Pin Pin coplanarity visual detection method and device | |
| CN115953726B (en) | Machine vision container face damage detection method and system | |
| CN111275124A (en) | Transformer respirator detection method, classification model construction method, computer readable medium and transformer respirator monitoring system | |
| CN1906461A (en) | Method and device for detecting direction of member having outer periphery formed in vertically asymmetrical shape | |
| CN114693656B (en) | Detection method for display defects of LED display screen, camera and calibration method for optical filter | |
| KR101993654B1 (en) | Inspecting apparatus mura of display panel and method thereof | |
| CN115184381A (en) | PCB detection device based on image recognition and image recognition method | |
| CN212409647U (en) | Internal thread hole detection device | |
| CN114383815A (en) | Method for rapidly detecting pixel out-of-control point of display screen | |
| CN210773933U (en) | Product appearance on-line measuring device | |
| CN114002228A (en) | Belt crack detection method based on image recognition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |