CN110805493A - Data visual type cleaning grade detection system - Google Patents
Data visual type cleaning grade detection system Download PDFInfo
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- CN110805493A CN110805493A CN201910990102.5A CN201910990102A CN110805493A CN 110805493 A CN110805493 A CN 110805493A CN 201910990102 A CN201910990102 A CN 201910990102A CN 110805493 A CN110805493 A CN 110805493A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 46
- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 230000000007 visual effect Effects 0.000 title abstract description 6
- 239000000295 fuel oil Substances 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000004880 explosion Methods 0.000 claims abstract description 4
- 239000012780 transparent material Substances 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 47
- 238000001914 filtration Methods 0.000 claims description 15
- 239000012634 fragment Substances 0.000 claims description 10
- 238000013506 data mapping Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 239000012212 insulator Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/083—Safety, indicating, or supervising devices relating to maintenance, e.g. diagnostic device
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/73—Deblurring; Sharpening
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
Abstract
The invention relates to a spark plug cleaning grade detection system, which comprises: the state recognition equipment is arranged on the motor vehicle and used for detecting whether the motor vehicle is in a fuel oil using state currently or not, and when a gasoline cylinder of the motor vehicle works, the motor vehicle is in the fuel oil using state; the embedded camera is separated from a gasoline cylinder of the motor vehicle by a layer of anti-explosion transparent material and is used for shooting a scene where the spark plug is located once when the motor vehicle is detected to be in a fuel oil using state at present so as to obtain an internal scene image; and the Bluetooth communication equipment is used for wirelessly sending a cleaning request signal to the Bluetooth terminal of the driver when the cleaning grade is less than the preset grade threshold. The spark plug cleaning grade detection system has visual data and wide application. Because a specific spark plug cleaning grade detection mechanism is adopted, a motor vehicle user is helped to effectively know the real-time state information of wearing parts in the motor vehicle, so that corresponding treatment measures are conveniently adopted, and accidents are avoided.
Description
Technical Field
The invention relates to the field of automobile parts, in particular to a data visual type cleaning grade detection system.
Background
Auto spare parts (auto spare parts) are units constituting an automobile spare part machining whole and products serving for the automobile spare part machining.
With the increasingly fierce competition of automobile parts processing markets, the deep mind of environmental protection concepts and the continuous upgrading and application of technologies, the international automobile parts processing industry shows the following development characteristics in recent years: (1) the trend of matching and modular supply of automobile accessory processing systems is emerging; (2) globalization of automobile parts processing and purchasing; (3) the transfer speed of the automobile accessory processing industry is accelerated.
For example, the engine accessory includes: the engine comprises a throttle body, an engine assembly, an oil pump, a choke, a tension wheel, a cylinder body, a bearing bush, a water pump, fuel injection, a sealing gasket, a camshaft, an air valve, a crankshaft, a connecting rod assembly, a piston, a belt, a silencer, a carburetor, an oil tank, a water tank, a fan, an oil seal, a radiator, a filter and the like.
Disclosure of Invention
The invention has at least the following two important points:
(1) judging the overall cleanliness of each spark plug of the gasoline cylinder based on the results of visual angle acquisition and analysis to determine whether to wirelessly inform a driver of cleaning or replacing in time;
(2) the following customized calculation model of the overall brightness values of the spark plug regions was introduced: and scaling the spark plug area to be the same as the standard spark plug pattern in size, carrying out difference on the scaled spark plug area and the standard spark plug pattern to obtain a difference image, and taking the mean value of the brightness values of the pixel points with the brightness values larger than the preset brightness value in the difference image as the whole brightness value of the corresponding spark plug area.
According to an aspect of the present invention, there is provided a spark plug cleaning level detection system, the system including:
the state recognition equipment is arranged on the motor vehicle and used for detecting whether the motor vehicle is in a fuel oil using state currently or not, and when a gasoline cylinder of the motor vehicle works, the motor vehicle is in the fuel oil using state;
the embedded camera is separated from a gasoline cylinder of the motor vehicle by a layer of anti-explosion transparent material, is connected with the state recognition equipment, and is used for shooting a scene where the spark plug is positioned once when detecting that the motor vehicle is in a fuel oil using state currently so as to obtain an internal scene image;
the Bluetooth communication equipment is connected with the embedded camera and used for wirelessly sending a cleaning request signal to a Bluetooth terminal of a driver when the cleaning grade received is less than a preset grade threshold value;
the Gaussian high-pass filtering equipment is connected with the embedded camera and used for executing Gaussian high-pass filtering processing on the image to be processed based on the maximum noise amplitude in the received internal scene image so as to obtain a corresponding Gaussian high-pass filtering image, wherein the smaller the maximum noise amplitude is, the smaller the amplitude of the Gaussian high-pass filter processing on the image to be processed is;
the white balance processing device is connected with the Gaussian high-pass filtering device and is used for executing white balance processing based on a dynamic threshold value on the received Gaussian high-pass filtering image to obtain a white balance processing image;
the edge sharpening device is connected with the white balance processing device and used for receiving the white balance processing image, and performing edge sharpening processing on the white balance processing image based on the fuzziness of the white balance processing image to obtain an edge sharpened image, wherein the higher the fuzziness of the white balance processing image is, the stronger the intensity of performing edge sharpening on the white balance processing image is;
the outline detection device is connected with the edge sharpening device and is used for taking an area, with the outline matching degree of a reference spark plug pattern exceeding a limited amount, in the edge sharpened image as a spark plug area, wherein the number of the spark plug areas is one or more;
and the grade identification device is respectively connected with the Bluetooth communication device and the appearance detection device and is used for determining a corresponding cleaning grade based on the average value of all overall brightness values of all spark plug areas, and the smaller the average value is, the lower the corresponding cleaning grade is.
The spark plug cleaning grade detection system has visual data and wide application. Because a specific spark plug cleaning grade detection mechanism is adopted, a motor vehicle user is helped to effectively know the real-time state information of wearing parts in the motor vehicle, so that corresponding treatment measures are conveniently adopted, and accidents are avoided.
Drawings
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
fig. 1 is a configuration view of a spark plug to which a system for detecting a cleanliness level of a spark plug according to an embodiment of the present invention is applied.
Detailed Description
An embodiment of the spark plug cleaning level detection system of the present invention will be described in detail below with reference to the accompanying drawings.
In the ignition system of gasoline engine, high voltage current is introduced into cylinder to generate electric spark to ignite the components of combustible gas mixture. The wire-connecting structure mainly comprises a wire-connecting nut, an insulator, a wire-connecting screw rod, a central electrode, a side electrode and a shell, wherein the side electrode is welded on the shell.
The gap between the spark plug electrodes has great influence on the work of the spark plug, and if the gap is too small, the spark is weak, and the leakage is easy to occur due to the generation of carbon deposition; the gap is too large, the required breakdown voltage is increased, the engine is not easy to start, and the phenomenon of 'misfire' is easy to occur at high speed, so the spark plug gap is appropriate, the spark plug gap used by a common storage battery ignition system is 0.7-0.8 mm, and the individual spark plug gap can reach more than 1.0 mm.
The spark plug insulator skirt (which refers to the insulator tapered portion outside the spark plug center electrode) directly contacts the hot gases in the combustion chamber and absorbs a large amount of heat, which is conducted through the shell to the cylinder head and the atmosphere, respectively. Experiments show that in order to ensure the normal work of an automobile engine, the skirt part of the insulator of the spark plug should be kept at the temperature of 500-600 ℃ (the temperature is called the self-cleaning temperature of the spark plug), and if the temperature is lower than the temperature, carbon deposition can be formed on the skirt part of the insulator to cause electric leakage between electrodes, so that spark plug sparking is influenced. If the insulator temperature is too high (over 900 ℃), ignition will occur when the mixture comes into contact with such a hot insulator, leading to premature ignition of the engine. The normal working temperature of the spark plug is 450-870 ℃. The spark plug is then yellowish brown. If the operating temperature of the spark plug is lower than 450 ℃ for a long time, much carbon deposits are formed around the spark plug, and the spark plug is black.
In the prior art, a spark plug of a motor vehicle is a fragile part, or a normal working state of the spark plug is maintained through a mode of timed replacement, or an abnormal state of the spark plug is found in a state that the spark plug is difficult to maintain, however, the former easily replaces a usable spark plug, so that a large economic burden is caused, and the latter is already involved in serious vehicle failure, so that other related parts are seriously damaged.
In order to overcome the defects, the invention builds a spark plug cleaning grade detection system, and can effectively solve the corresponding technical problem.
A spark plug cleaning level detection system according to an embodiment of the present invention includes:
the state recognition equipment is arranged on the motor vehicle and used for detecting whether the motor vehicle is in a fuel oil using state currently or not, and when a gasoline cylinder of the motor vehicle works, the motor vehicle is in the fuel oil using state;
the embedded camera is separated from a gasoline cylinder of the motor vehicle by a layer of anti-explosion transparent material, is connected with the state recognition equipment, and is used for shooting a scene where the spark plug is positioned once when detecting that the motor vehicle is in a fuel oil using state currently so as to obtain an internal scene image;
the Bluetooth communication equipment is connected with the embedded camera and used for wirelessly sending a cleaning request signal to a Bluetooth terminal of a driver when the cleaning grade received is less than a preset grade threshold value;
the Gaussian high-pass filtering equipment is connected with the embedded camera and used for executing Gaussian high-pass filtering processing on the image to be processed based on the maximum noise amplitude in the received internal scene image so as to obtain a corresponding Gaussian high-pass filtering image, wherein the smaller the maximum noise amplitude is, the smaller the amplitude of the Gaussian high-pass filter processing on the image to be processed is;
the white balance processing device is connected with the Gaussian high-pass filtering device and is used for executing white balance processing based on a dynamic threshold value on the received Gaussian high-pass filtering image to obtain a white balance processing image;
the edge sharpening device is connected with the white balance processing device and used for receiving the white balance processing image, and performing edge sharpening processing on the white balance processing image based on the fuzziness of the white balance processing image to obtain an edge sharpened image, wherein the higher the fuzziness of the white balance processing image is, the stronger the intensity of performing edge sharpening on the white balance processing image is;
the outline detection device is connected with the edge sharpening device and is used for taking an area, with the outline matching degree of a reference spark plug pattern exceeding a limited amount, in the edge sharpened image as a spark plug area, wherein the number of the spark plug areas is one or more;
the grade identification device is respectively connected with the Bluetooth communication device and the appearance detection device and is used for determining a corresponding cleaning grade based on the average value of all overall brightness values of all spark plug areas, and the smaller the average value is, the lower the corresponding cleaning grade is;
the outline structure of a spark plug inside a gasoline cylinder of a motor vehicle is shown in figure 1;
wherein the overall brightness value of each spark plug region is calculated in the following mode: and scaling the spark plug area to be the same as the standard spark plug pattern in size, carrying out difference on the scaled spark plug area and the standard spark plug pattern to obtain a difference image, and taking the mean value of the brightness values of the pixel points with the brightness values larger than the preset brightness value in the difference image as the whole brightness value of the corresponding spark plug area.
Next, a detailed description will be made of a specific structure of the spark plug cleaning level detection system of the present invention.
In the spark plug cleaning level detection system, further comprising:
and the dynamic range identification device is connected with the edge sharpening device and is used for receiving the edge sharpened image and carrying out identification operation on the dynamic range of the edge sharpened image so as to obtain the corresponding dynamic range width grade.
In the spark plug cleaning level detection system, further comprising:
and the data mapping equipment is connected with the dynamic range identification equipment and is used for dividing the edge-sharpened image according to the dynamic range width grade to obtain a plurality of image fragments.
In the spark plug cleaning level detection system:
in the data mapping device, the lower the dynamic range width level is, the smaller the number of a plurality of image patches obtained by dividing the edge-sharpened image is.
In the spark plug cleaning level detection system, further comprising:
and the content selecting device is connected with the data mapping device and is used for receiving each image fragment of the edge sharpening image.
In the spark plug cleaning level detection system:
and the content selecting device selects image fragments which are overlapped with the Chinese character from the edge-sharpened image as representative image fragments by adopting a Chinese character type selecting mode.
In the spark plug cleaning level detection system, further comprising:
and the real-time processing equipment is respectively connected with the shape detection equipment and the content selection equipment, and is used for performing mean value calculation on each contrast of each representative image fragment to obtain a reference mean value, performing contrast compensation processing on the whole edge sharpened image based on the reference mean value to obtain a real-time processed image, and replacing the edge sharpened image with the real-time processed image and sending the real-time processed image to the shape detection equipment.
In the spark plug cleaning level detection system:
performing contrast compensation processing on the edge-sharpened image as a whole based on the reference mean value includes: the reference mean is inversely proportional to the magnitude of the contrast compensation.
In the spark plug cleaning level detection system:
in the dynamic range recognition apparatus, the lower the dynamic range width level is, the narrower the dynamic range of the corresponding edge-sharpened image is.
In addition, the dynamic range identification device is internally provided with an FPM DRAM storage chip. FPM DRAM (Fast Page modem): fast page mode memory. Is a memory that was commonly used during time 486 (also used as video memory). 72 lines, 5V voltage, 32bit bandwidth and basic speed of more than 60 ns. His read cycle begins with the triggering of a row in the DRAM array and then moves to the location indicated by the memory address, i.e., contains the desired data. The first message must be validated and stored to the system in preparation for the next cycle. This introduces a "wait state" because the CPU must wait for the memory to complete one cycle foolproof. One important reason for the widespread use of FPM is that it is a standard and safe product and is inexpensive.
It is to be understood that while the present invention has been described in conjunction with the preferred embodiments thereof, it is not intended to limit the invention to those embodiments. It will be apparent to those skilled in the art from this disclosure that many changes and modifications can be made, or equivalents modified, in the embodiments of the invention without departing from the scope of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (9)
1. A spark plug cleaning level detection system, comprising:
the state recognition equipment is arranged on the motor vehicle and used for detecting whether the motor vehicle is in a fuel oil using state currently or not, and when a gasoline cylinder of the motor vehicle works, the motor vehicle is in the fuel oil using state;
the embedded camera is separated from a gasoline cylinder of the motor vehicle by a layer of anti-explosion transparent material, is connected with the state recognition equipment, and is used for shooting a scene where the spark plug is positioned once when detecting that the motor vehicle is in a fuel oil using state currently so as to obtain an internal scene image;
the Bluetooth communication equipment is connected with the embedded camera and used for wirelessly sending a cleaning request signal to a Bluetooth terminal of a driver when the cleaning grade received is less than a preset grade threshold value;
the Gaussian high-pass filtering equipment is connected with the embedded camera and used for executing Gaussian high-pass filtering processing on the image to be processed based on the maximum noise amplitude in the received internal scene image so as to obtain a corresponding Gaussian high-pass filtering image, wherein the smaller the maximum noise amplitude is, the smaller the amplitude of the Gaussian high-pass filter processing on the image to be processed is;
the white balance processing device is connected with the Gaussian high-pass filtering device and is used for executing white balance processing based on a dynamic threshold value on the received Gaussian high-pass filtering image to obtain a white balance processing image;
the edge sharpening device is connected with the white balance processing device and used for receiving the white balance processing image, and performing edge sharpening processing on the white balance processing image based on the fuzziness of the white balance processing image to obtain an edge sharpened image, wherein the higher the fuzziness of the white balance processing image is, the stronger the intensity of performing edge sharpening on the white balance processing image is;
the outline detection device is connected with the edge sharpening device and is used for taking an area, with the outline matching degree of a reference spark plug pattern exceeding a limited amount, in the edge sharpened image as a spark plug area, wherein the number of the spark plug areas is one or more;
the grade identification device is respectively connected with the Bluetooth communication device and the appearance detection device and is used for determining a corresponding cleaning grade based on the average value of all overall brightness values of all spark plug areas, and the smaller the average value is, the lower the corresponding cleaning grade is;
wherein the overall brightness value of each spark plug region is calculated in the following mode: and scaling the spark plug area to be the same as the standard spark plug pattern in size, carrying out difference on the scaled spark plug area and the standard spark plug pattern to obtain a difference image, and taking the mean value of the brightness values of the pixel points with the brightness values larger than the preset brightness value in the difference image as the whole brightness value of the corresponding spark plug area.
2. The spark plug cleaning level detection system of claim 1, wherein said system further comprises:
and the dynamic range identification device is connected with the edge sharpening device and is used for receiving the edge sharpened image and carrying out identification operation on the dynamic range of the edge sharpened image so as to obtain the corresponding dynamic range width grade.
3. The spark plug cleaning level detection system of claim 2, wherein said system further comprises:
and the data mapping equipment is connected with the dynamic range identification equipment and is used for dividing the edge-sharpened image according to the dynamic range width grade to obtain a plurality of image fragments.
4. The spark plug cleaning level detection system according to claim 3, wherein:
in the data mapping device, the lower the dynamic range width level is, the smaller the number of a plurality of image patches obtained by dividing the edge-sharpened image is.
5. The spark plug cleaning level detection system of claim 4, wherein said system further comprises:
and the content selecting device is connected with the data mapping device and is used for receiving each image fragment of the edge sharpening image.
6. The spark plug cleaning level detection system according to claim 5, wherein:
and the content selecting device selects image fragments which are overlapped with the Chinese character from the edge-sharpened image as representative image fragments by adopting a Chinese character type selecting mode.
7. The spark plug cleaning level detection system of claim 6, wherein said system further comprises:
and the real-time processing equipment is respectively connected with the shape detection equipment and the content selection equipment, and is used for performing mean value calculation on each contrast of each representative image fragment to obtain a reference mean value, performing contrast compensation processing on the whole edge sharpened image based on the reference mean value to obtain a real-time processed image, and replacing the edge sharpened image with the real-time processed image and sending the real-time processed image to the shape detection equipment.
8. The spark plug cleaning level detection system according to claim 7, wherein:
performing contrast compensation processing on the edge-sharpened image as a whole based on the reference mean value includes: the reference mean is inversely proportional to the magnitude of the contrast compensation.
9. The spark plug cleaning level detection system according to claim 8, wherein:
in the dynamic range recognition apparatus, the lower the dynamic range width level is, the narrower the dynamic range of the corresponding edge-sharpened image is.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112540091A (en) * | 2020-10-23 | 2021-03-23 | 泰州程顺制冷设备有限公司 | Belt loss degree on-site identification platform |
| CN116580000A (en) * | 2023-05-08 | 2023-08-11 | 江阴市良友化工设备制造有限公司 | Chemical heat exchanger cleaning effect identification system |
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