CN105353654B - A kind of molten iron drossing measurement and control system and its method based on image procossing - Google Patents
A kind of molten iron drossing measurement and control system and its method based on image procossing Download PDFInfo
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- CN105353654B CN105353654B CN201510632206.0A CN201510632206A CN105353654B CN 105353654 B CN105353654 B CN 105353654B CN 201510632206 A CN201510632206 A CN 201510632206A CN 105353654 B CN105353654 B CN 105353654B
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
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Abstract
The invention discloses a kind of molten iron drossing measurement and control system based on image procossing, comprising: ladle fills molten iron and slag in ladle；Slag basin, is set to by ladle, and slag basin is for holding slag；Mucking machine is set to the side of ladle；Camera is connected to processor；Display is connected to processor, and display is set at operative employee, for reflecting the state of skimming of molten iron level；Processor is analyzed image information and is handled, and exported over the display for obtaining the image information of camera acquisition；Processor is also used to access standard database of skimming；The molten iron drossing Detection & Controling method based on image procossing that the invention also discloses a kind of, by the present invention in that whether skimmed with real time monitoring process and reaches the technological means of target grade according to standard database of the skimming grade that determines to skim online, it avoids determining using artificial, therefore grade of skimming will not be judged by accident.
Description
Technical field
The present invention relates to field of steel metallurgy, particularly, are related to a kind of molten iron drossing detection and control based on image procossing
System and method processed.
Background technique
With the development that modernization industry produces, the requirement to steel quality is continuously improved, i.e., wants to the degree of purity of molten steel
Ask just higher and higher.Liquid Iron Pretreatment Technology is the important means for improving hot metal purifying degree, has become Ferrous Metallurgy optimization work
The chief component of skill process, skims, and is to remove high sulphur slag a large amount of in the ladle after desulfurization, makes when in order to avoid making steel
It is the key link controlled into furnace sulphur total amount at sulphur is returned.
Sulfur method in the prior art is that desulfurization operations work detects by an unaided eye ladle, and rule of thumb judges and skim
Grade is skimmed.However, the unstable factors such as Qiang Guang, dense smoke and operative employee's attention are easy to lead since operating environment is severe
Cause erroneous judgement.
Aiming at the problem that unstable factors cause erroneous judgement the skims grade such as operating environment in the prior art is severe, at present not yet
There is effective solution scheme.
Summary of the invention
It is of the invention aiming at the problem that unstable factors cause erroneous judgement the skims grade such as operating environment in the prior art is severe
Purpose is to propose a kind of molten iron drossing measurement and control system and its method based on image procossing, can be to molten iron drossing mistake
Journey monitors and determines grade of skimming in real time, avoids artificial judgement bring and judges grade of skimming by accident.
Based on above-mentioned purpose, technical solution provided by the invention is as follows:
According to an aspect of the invention, there is provided a kind of molten iron drossing measurement and control system based on image procossing.
The molten iron drossing measurement and control system based on image procossing provided according to the present invention includes:
Ladle fills molten iron and slag in ladle；
Slag basin, slag basin are set to by ladle, and slag basin is for holding slag；
Mucking machine, mucking machine are set to the inclined side of ladle institute, and mucking machine in ladle for skimming；
Camera, camera are connected to processor, and camera is set to the molten iron level of face ladle, for obtaining iron
The state of skimming of water level；
Display, display are connected to processor, and display is set at operative employee, for reflecting skimming for molten iron level
State；
Processor, processor are used to obtain the image information of camera acquisition, are analyzed image information and handled, and
It exports over the display；Processor is also used to access standard database of skimming, and makes current quantity of slag grade for current molten iron, and will
Current quantity of slag grade is compared with preassigned quantity of slag grade threshold.
Wherein, the image information of camera acquisition includes the distributed intelligence and image grayscale information of molten iron and slag；Processing
Machine analyzes image information, to carry out Threshold segmentation, and root to effective analyzed area according to the distributed intelligence of molten iron and slag
Molten iron discharging and slag are further identified according to the image grayscale information in effective analyzed area.
Also, processor calculates gray scale of slagging tap, molten iron ash also according to the recognition result of image grayscale information and molten iron and slag
Degree, pixel number, molten iron and slag shared by slag account for pixel number altogether, and the pixel number according to shared by slag gray scale, molten iron gray scale, slag, molten iron and
Slag accounts for pixel number altogether and calculates thickness of slagging tap, slag area coverage and slag covering rate information.
Meanwhile the method for carrying out image procossing includes at least one of: dyeing, broken line covering.
Meanwhile the distribution situation of molten iron and slag that operative employee arrives according to the observation judges to take off using automatic or manual mode
Slag operation.
Also, mucking machine includes nitrogen tube；Operative employee carries out taking off slag operation in a manual manner, is operative employee in image procossing
Nitrogen tube is proposed behind 10 seconds of output and carries out taking off slag operation in a manual manner；Operative employee carries out taking off slag operation in an automatic fashion, is
Operative employee does not propose nitrogen tube after image procossing output and carries out taking off slag operation in an automatic fashion.
Processor is additionally coupled to steel mill's level two simultaneously, and steel mill's level two includes that standard is skimmed database, processor
Accessing standard database of skimming is that current molten iron makes current quantity of slag grade, to access criterion numeral of skimming by steel mill's level two
According to library, slag thickness, slag area coverage and the slag covering rate information range in multiple and different classification standards are obtained, it will be multiple and different
Slag thickness, slag area coverage in classification standard cover rate information range with slag and the corresponding informance of current molten iron is compared
It is right, and current quantity of slag grade is made for current molten iron.
Also, processor obtains slag thickness, slag area coverage and slag covering rate information in multiple and different classification standards
Range, to obtain the above- mentioned information in multiple and different classification standards under environmental condition corresponding with current operating environment,
Middle environmental condition includes at least one of: heat (batch) number, steel grade, molten iron temperature, Ti content, silicone content.
Meanwhile after current quantity of slag grade is compared by processor with preassigned quantity of slag grade threshold, according to comparing
Result judgement continues or stops to skim.
Also, operative employee presets a quantity of slag grade threshold, when current quantity of slag grade is less than setting quantity of slag grade,
Processor control mucking machine stopping skims or prompts operative employee to stop skimming；When current quantity of slag grade is more than or equal to setting quantity of slag etc.
When grade, processor control mucking machine continues to skim or prompt operative employee to continue to skim, until current quantity of slag grade is less than setting slag
Until measuring grade.
From the above it can be seen that technical solution provided by the invention is skimmed process and basis by using real time monitoring
Whether standard database of the skimming grade that determines to skim online reaches the technological means of target grade, avoids using manually sentencing
It is fixed, therefore grade of skimming will not be judged by accident.
According to an aspect of the invention, there is provided a kind of molten iron drossing Detection & Controling method based on image procossing.
The molten iron drossing Detection & Controling method based on image procossing provided according to the present invention includes:
The image information of molten iron and slag in real-time acquisition ladle, ladle；
Determine effective analyzed area in image information, to effective analyzed area carry out Threshold segmentation, identification molten iron discharging and
Slag, and obtain slag thickness, slag area coverage and slag covering rate information；
Image procossing is carried out with slag part image to the molten iron in analyzed area effective in image information respectively and is exported, is made
Operative employee can readily differentiate the distribution situation of molten iron discharging and slag；
Rate information is covered according to slag, makes current quantity of slag grade using standard database is skimmed for current molten iron, and will
Current quantity of slag grade is compared with preassigned quantity of slag grade threshold.
Wherein, image information includes the distributed intelligence and image grayscale information of molten iron and slag；To effective analyzed area into
Row threshold division identifies molten iron discharging and slag, to carry out Threshold segmentation to effective analyzed area according to the distributed intelligence of molten iron and slag,
And molten iron discharging and slag are further identified according to the image grayscale information in effective analyzed area.
Also, obtain slag thickness, slag area coverage and slag cover rate information, for according to image grayscale information and molten iron and
The recognition result of slag, slag tap gray scale, molten iron gray scale, pixel number, molten iron and slag shared by slag of calculating account for pixel number altogether, and according to slag ash
Pixel number, molten iron and slag shared by degree, molten iron gray scale, slag account for pixel number altogether and calculate thickness of slagging tap, slag area coverage and slag covering ratio
Rate information.
Meanwhile the method for carrying out image procossing includes at least one of: dyeing, broken line covering.
Meanwhile the distribution situation of molten iron and slag that operative employee arrives according to the observation judges to take off using automatic or manual mode
Slag operation.
Also, operative employee carries out taking off slag operation in a manual manner, mentions nitrogen after the several seconds that image procossing exports for operative employee
Tracheae simultaneously carries out taking off slag operation in a manual manner；Operative employee carries out taking off slag operation in an automatic fashion, is operative employee in image procossing
Nitrogen tube is not proposed after output and carries out taking off slag operation in an automatic fashion.
Meanwhile current quantity of slag grade is made for current molten iron using standard database is skimmed, to access normal data of skimming
Library obtains slag thickness, slag area coverage and slag covering rate information range in multiple and different classification standards, will be multiple and different etc.
Slag thickness, slag area coverage in grade standard are compared with slag covering rate information range with the corresponding informance of current molten iron,
And current quantity of slag grade is made for current molten iron.
Also, it obtains slag thickness, slag area coverage and slag in multiple and different classification standards and covers rate information range, be
The above- mentioned information in multiple and different classification standards under environmental condition corresponding with current operating environment are obtained, wherein environment item
Part includes at least one of: heat (batch) number, steel grade, molten iron temperature, Ti content, silicone content.
Meanwhile after being compared current quantity of slag grade with preassigned quantity of slag grade threshold, sentenced according to comparison result
It is fixed to continue or stop to skim.
Meanwhile a quantity of slag grade threshold is preset, when current quantity of slag grade is less than setting quantity of slag grade, control is taken off
The stopping of slag machine skims or prompts operative employee to stop skimming；When current quantity of slag grade is more than or equal to setting quantity of slag grade, control is taken off
Slag machine continues to skim or prompt operative employee to continue to skim, until current quantity of slag grade is less than setting quantity of slag grade.
From the above it can be seen that technical solution provided by the invention is skimmed process and basis by using real time monitoring
Whether standard database of the skimming grade that determines to skim online reaches the technological means of target grade, avoids using manually sentencing
It is fixed, therefore grade of skimming will not be judged by accident.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the flow chart according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention；
Fig. 2 is an implementation according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
Device layout in example；
Fig. 3 is an implementation according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
In example, outbound flow chart is accomplished to from desulfurizing iron；
Fig. 4 is an implementation according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
The function execution flow chart of example；
Fig. 5 is an implementation according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
In example, the acquired original image when quantity of slag is less；
Fig. 6 is an implementation according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
In example, the acquired original image when quantity of slag is more；
Fig. 7 is an implementation according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
In example, the dyeing when quantity of slag is less handles image；
Fig. 8 is an implementation according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
In example, the dyeing when quantity of slag is more handles image；
Fig. 9 is an implementation according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
In example, the broken line covering treatment image when quantity of slag is less；
Figure 10 is a reality according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
It applies in example, the broken line covering treatment image when quantity of slag is more；
Figure 11 is a reality according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
It applies in example, the molten iron when quantity of slag is less and slag region histogram；
Figure 12 is a reality according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
It applies in example, the molten iron when quantity of slag is more and slag region histogram；
Figure 13 is a reality according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
It applies in example, slag thickness and slag average thickness linear regression graph when the quantity of slag is less；
Figure 14 is a reality according to the molten iron drossing Detection & Controling method based on image procossing of the embodiment of the present invention
It applies in example, slag thickness and slag average thickness linear regression graph when the quantity of slag is more.
Figure 15 is the flow chart according to the molten iron drossing measurement and control system based on image procossing of the embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction in the embodiment of the present invention
Attached drawing, technical solution in the embodiment of the present invention further progress understands, completely, describe in detail, it is clear that it is described
Embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained, shall fall within the protection scope of the present invention.
According to one embodiment of present invention, a kind of molten iron drossing Detection & Controling system based on image procossing is provided
System.
As shown in figure 15, the molten iron drossing Detection & Controling system based on image procossing that embodiment according to the present invention provides
System includes:
Ladle 11, ladle 11 are obliquely installed, and fill molten iron and slag in ladle 11；
Slag basin 12, slag basin 12 are set to the lower section of 11 inclined directions of ladle, and slag basin 12 is for holding slag；
Mucking machine 13, mucking machine 13 are set to the 11 inclined side of institute of ladle, and mucking machine 13 is used in ladle 11
It skims；
Camera 14, camera 14 are connected to processor 15, and camera 14 is set to the molten iron level of face ladle 11,
For obtaining the state of skimming of molten iron level；
Display 16, display 16 are connected to processor 15, and display 16 is set at operative employee, for reflecting molten iron liquid
The state of skimming in face；
Processor 15, processor 15 be used for obtain camera 14 acquisition image information, to image information carry out analysis with
Processing, and export on the display 16；Processor 15 is also used to access standard database of skimming, and makes current slag for current molten iron
Grade is measured, and current quantity of slag grade is compared with preassigned quantity of slag grade threshold.
Wherein, the image information that camera 14 acquires includes the distributed intelligence and image grayscale information of molten iron and slag；Place
Reason machine 15 analyzes image information, to carry out Threshold segmentation to effective analyzed area according to the distributed intelligence of molten iron and slag,
And molten iron discharging and slag are further identified according to the image grayscale information in effective analyzed area.
Also, processor 15 calculates slag tap gray scale, molten iron also according to the recognition result of image grayscale information and molten iron and slag
Pixel number shared by gray scale, slag, molten iron and slag account for pixel number, and pixel number, molten iron according to shared by slag gray scale, molten iron gray scale, slag altogether
It accounts for pixel number altogether with slag and calculates thickness of slagging tap, slag area coverage and slag covering rate information.
Meanwhile the method for carrying out image procossing includes at least one of: dyeing, broken line covering.
Meanwhile the distribution situation of molten iron and slag that operative employee arrives according to the observation judges to take off using automatic or manual mode
Slag operation.
Also, mucking machine 13 includes nitrogen tube；Operative employee carries out taking off slag operation in a manual manner, is operative employee at image
Nitrogen tube is proposed after managing the several seconds (such as 10 seconds) of output and carries out taking off slag operation in a manual manner；Operative employee carries out in an automatic fashion
Slag operation is taken off, do not propose nitrogen tube after image procossing output for operative employee and carries out taking off slag operation in an automatic fashion.
Processor 15 is additionally coupled to steel mill's level two simultaneously, and steel mill's level two includes that standard is skimmed database, processing
It is that current molten iron makes current quantity of slag grade that machine 15, which accesses standard database of skimming, to access mark of skimming by steel mill's level two
Quasi- database obtains slag thickness, slag area coverage and slag covering rate information range in multiple and different classification standards, will be multiple
The corresponding informance of slag thickness, slag area coverage and slag covering rate information range and current molten iron in different brackets standard carries out
It compares, and makes current quantity of slag grade for current molten iron.
Also, processor 15 obtains slag thickness, slag area coverage and slag covering ratio letter in multiple and different classification standards
Range is ceased, to obtain the above- mentioned information in multiple and different classification standards under environmental condition corresponding with current operating environment,
Wherein environmental condition includes at least one of: heat (batch) number, steel grade, molten iron temperature, Ti content, silicone content.
Meanwhile after current quantity of slag grade is compared by processor 15 with preassigned quantity of slag grade threshold, according to than
Continue or stop to skim compared with result judgement.
Also, operative employee presets a quantity of slag grade threshold, when current quantity of slag grade is less than setting quantity of slag grade,
Processor 15 controls the stopping of mucking machine 13 and skims or prompt operative employee to stop skimming；When current quantity of slag grade is more than or equal to setting slag
When measuring grade, processor 15, which controls mucking machine 13, to be continued to skim or prompt operative employee to continue to skim, until current quantity of slag grade is small
Until setting quantity of slag grade.
According to one embodiment of present invention, a kind of molten iron drossing Detection & Controling side based on image procossing is provided
Method.
As shown in Figure 1, the molten iron drossing Detection & Controling side based on image procossing that embodiment according to the present invention provides
Method includes:
Step S101, obtain in real time ladle, in ladle molten iron and slag image information；
Step S103 determines effective analyzed area in image information, carries out Threshold segmentation, identification to effective analyzed area
Molten iron discharging and slag, and obtain slag thickness, slag area coverage and slag covering rate information；
Step S105 carries out image procossing with slag part image to the molten iron in analyzed area effective in image information respectively
And export, so that operative employee is readily differentiated the distribution situation of molten iron discharging and slag；
Step S107 covers rate information according to slag, the use of standard database of skimming is that current molten iron makes the current quantity of slag
Grade, and current quantity of slag grade is compared with preassigned quantity of slag grade threshold.
Wherein, image information includes the distributed intelligence and image grayscale information of molten iron and slag；To effective analyzed area into
Row threshold division identifies molten iron discharging and slag, to carry out Threshold segmentation to effective analyzed area according to the distributed intelligence of molten iron and slag,
And molten iron discharging and slag are further identified according to the image grayscale information in effective analyzed area.
Also, obtain slag thickness, slag area coverage and slag cover rate information, for according to image grayscale information and molten iron and
The recognition result of slag, slag tap gray scale, molten iron gray scale, pixel number, molten iron and slag shared by slag of calculating account for pixel number altogether, and according to slag ash
Pixel number, molten iron and slag shared by degree, molten iron gray scale, slag account for pixel number altogether and calculate thickness of slagging tap, slag area coverage and slag covering ratio
Rate information.
Meanwhile the method for carrying out image procossing includes at least one of: dyeing, broken line covering.
Meanwhile the distribution situation of molten iron and slag that operative employee arrives according to the observation judges to take off using automatic or manual mode
Slag operation.
Also, operative employee carries out taking off slag operation in a manual manner, mentions nitrogen after the several seconds that image procossing exports for operative employee
Tracheae simultaneously carries out taking off slag operation in a manual manner；Operative employee carries out taking off slag operation in an automatic fashion, is operative employee in image procossing
Nitrogen tube is not proposed after output and carries out taking off slag operation in an automatic fashion.
Meanwhile current quantity of slag grade is made for current molten iron using standard database is skimmed, to access normal data of skimming
Library obtains slag thickness, slag area coverage and slag covering rate information range in multiple and different classification standards, will be multiple and different etc.
Slag thickness, slag area coverage in grade standard are compared with slag covering rate information range with the corresponding informance of current molten iron,
And current quantity of slag grade is made for current molten iron.
Also, it obtains slag thickness, slag area coverage and slag in multiple and different classification standards and covers rate information range, be
The above- mentioned information in multiple and different classification standards under environmental condition corresponding with current operating environment are obtained, wherein environment item
Part includes at least one of: heat (batch) number, steel grade, molten iron temperature, Ti content, silicone content.
Meanwhile after being compared current quantity of slag grade with preassigned quantity of slag grade threshold, sentenced according to comparison result
It is fixed to continue or stop to skim.
Meanwhile a quantity of slag grade threshold is preset, when current quantity of slag grade is less than setting quantity of slag grade, control is taken off
The stopping of slag machine skims or prompts operative employee to stop skimming；When current quantity of slag grade is more than or equal to setting quantity of slag grade, control is taken off
Slag machine continues to skim or prompt operative employee to continue to skim, until current quantity of slag grade is less than setting quantity of slag grade.
Below according to the specific embodiment technical solution that the present invention is further explained.
Fig. 2 shows be one embodiment of the present of invention.As shown in Fig. 2, molten iron table in image pick-up device captured in real-time ladle
The distribution situation of face slag, is transferred to processor.On the one hand operative employee is shown to after image procossing, on the other hand by steel mill
The standard database of skimming of level two makes current quantity of slag grade to determine whether to continue to skim.
Data interaction module mainly realizes the data communication of processor Yu steel mill's level two, first is that obtaining steel mill's second level system
The information that system is sent, such as: Smelting number (heat (batch) number), steel grade, molten iron temperature, hot metal composition, class requirement of skimming；Second is that passback
Time, grade of actually skimming are determined to the information of steel mill's level two, such as Smelting number (heat (batch) number), grade of skimming.It is logical in data
After letter, processor will obtain multiple and different classification standards under environmental condition corresponding with current operating environment.
Human-machine interface module mainly realizes following three functions: configuring industrial liquid crystal display immediately ahead of operative employee, grasps
Workmanship can observe process of skimming by the display in real time；Match alarm in operating room, grade of skimming, which does not reach to skim, to be wanted
When asking, warning note is issued, guidance continues to take off slag operation；Match signal lamp in operating room, band iron when process of skimming operates mucking machine
Water, system issue warning note, instruct operative employee.
Image pick-up device is used to acquire the distribution situation of molten iron and slag in ladle.To guarantee to obtain image validity, there is also
The thermostatically-controlled equipment of one covering image pick-up device, thermostatically-controlled equipment make image pick-up device work under an isoperibol always, keep away
Exempt from site environment temperature change greatly to image pick-up device band unstable factor.In addition, image pick-up device bracket is protected using ventilation dust removal design
Protection unit is inside and outside to form Negative Pressure Difference design, to adapt to the big environment of live flue dust.
Currently, general molten iron locates process flow in advance is: after molten iron enters the station, removing blast furnace slag first, carry out first time survey
Then temperature sampling is added desulfurizing agent and removes desulfurization slag, carry out second of thermometric sampling, final outbound.For the molten iron of desulfurization,
Removing for desulfurization slag is necessary process, and combined process requires analysis, and system sentences grade opportunity regulation and mentions nitrogen tube number in operative employee
After second (such as 10 seconds), wait flue dust dissipate completely it is net after, operative employee, which presses, sentences grade switch or system judges automatically whether mention nitrogen
Tracheae movement is as sentencing a grade trigger condition.It is as shown in Figure 3 that outbound process is accomplished to from desulfurizing iron.
Molten iron drossing detection system monitors the process of skimming in real time and realizes the real-time recording function for the process of skimming automatically
Can, determine whether the grade of skimming of melting heat reaches target grade online according to standard database of skimming.Basis first
The parameter of whole system is arranged in site environment requirement, image quality requirements, pre-processing requirements and requirements for extracting features, secondly by
Image pick-up device constantly acquires image and is analyzed and saved for the comparison of subsequent accesss in real time, after Image Acquisition, using proprietary excellent
Change image processing techniques to be filtered, automatically extracts the profile information of slag in image, the analyzed area of image is determined, to area
Domain carries out automatic threshold segmentation technology identification molten iron discharging and slag, and combined process parameter, standard database compares with skimming, and determines
It skims and whether reaches expected level, extract the feature in slag region, analyze thickness of slag layer.
Detection system of skimming also realizes communication function with steel mill's level two, and level two is by Smelting number, hot metal composition, steel
Kind of information, molten iron temperature, class requirement of skimming mention rifle signal and are transmitted to and take off slag system；System of skimming judgement is skimmed and will be melted after grade
Refining number, skimming determines that result returns to steel mill's level two.In addition to this, when the reasons such as fault in production occur and stopping operation,
Operator is saved in video recording and screenshot in local data base, molten iron, slag in off-line analysis ladle before can making full use of
Situation of change, analysis of history molten iron, slag thickness, slag area coverage and slag are covered rate of change situation, can also be gone through with real-time playback
History video recording, query history curve analyze the process of skimming, and continuously optimize standard database of skimming.The function of whole system
Flow chart is as shown in Figure 4.
Identification and analysis to the collected molten iron of image pick-up device and slag distribution map are the cores of molten iron drossing detection system
Point, for the molten iron after desulfurization, since the density of high sulphur slag is the one third or so of molten iron density, slag can float to molten iron
Surface.
Molten iron drossing detection system based on machine vision has that non-contact, speed is fast, precision is high, strong antijamming capability etc.
Advantage accurately and efficiently can be identified and be analyzed to the collected molten iron of image pick-up device and slag distribution map.Image is carried out first
Pretreatment, automatically extracts the profile information of slag in image, determines the analyzed area of image；Then automatic threshold is carried out to analyzed area
Value segmentation, identifies molten iron discharging and slag, and carry out color processing and highlight；The thickness and range of slag in ultimate analysis image, and
Determine whether the grade of skimming of melting heat reaches target grade online according to standard database of skimming.
Fig. 5-14, which is molten iron drossing detection system, carries out analytical effect figure to two kinds of situations in ladle, respectively the quantity of slag compared with
Few situation (Fig. 5,7,9,11,13) and the more situation (Fig. 6,8,10,12,14) of the quantity of slag.Wherein, Fig. 5,6 are acquired original
Image；Fig. 7,8 are dyeing treated image；Fig. 9,10 are the image after broken line covering treatment；Figure 11,12 are molten iron and slag area
Domain histogram；Figure 13,14 are slag thickness and slag average thickness linear regression graph.
It can be certainly according to information, administrative staff such as top of the slag product, slag thickness and steel grade, temperature, the hot metal compositions that detected
Definition standard is skimmed rating database, and system of skimming receives the class requirement of skimming that steel mill's level two issues, operative employee to
It can decide whether to have reached grade of skimming.
In conclusion by means of above-mentioned technical proposal of the invention, skimmed process and according to taking off by using real time monitoring
Whether the slag standard database grade that determines to skim online reaches the technological means of target grade, avoids determining using artificial,
High degree of automation, therefore grade of skimming will not be judged by accident.
It should be understood by those ordinary skilled in the art that: the above is only a specific embodiment of the present invention, and
It is not used in the limitation present invention, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done,
It should be included within protection scope of the present invention.
Claims (5)
1. a kind of molten iron drossing measurement and control system based on image procossing, comprising:
Ladle fills molten iron and slag in the ladle；
Slag basin, the slag basin are set to by the ladle, and the slag basin is for holding slag；
Mucking machine, the mucking machine are set to the side of the ladle, and the mucking machine in ladle for skimming；
Camera, the camera are connected to processor, and the camera is set to the molten iron level of ladle described in face, use
In the state of skimming for obtaining the molten iron level；
Display, the display are connected to processor, and the display is set at operative employee, for reflecting the molten iron liquid
The state of skimming in face；
Processor, the processor are used to obtain the image information of the camera acquisition, analyze described image information
With processing, and export on the display；The processor is also used to access standard database of skimming, and makes for current molten iron
Current quantity of slag grade, and the current quantity of slag grade is compared with preassigned quantity of slag grade threshold；
The image information of the camera acquisition includes the distributed intelligence and image grayscale information of molten iron and slag；The processing
Machine analyzes described image information, to carry out threshold value point to effective analyzed area according to the distributed intelligence of the molten iron and slag
It cuts, and molten iron discharging and slag is further identified according to the described image grayscale information in effective analyzed area；
The processor calculates slag tap gray scale, iron also according to the recognition result of described image grayscale information and the molten iron and slag
Pixel number shared by water gray scale, slag, molten iron and slag account for pixel number, and the pixel according to shared by the slag gray scale, molten iron gray scale, slag altogether
Number, molten iron and slag account for pixel number altogether and calculate thickness of slagging tap, slag area coverage and slag covering rate information；
The distribution situation of the molten iron and slag that operative employee arrives according to the observation judges to carry out the behaviour that skims using automatic or manual mode
Make；
The processor is additionally coupled to steel mill's level two, and steel mill's level two includes standard database of skimming, the place
Standard database of skimming described in the access of reason machine is that current molten iron makes current quantity of slag grade, to be visited by steel mill's level two
It asks the standard database of skimming, obtains slag thickness, slag area coverage and slag covering ratio letter in multiple and different classification standards
Range is ceased, by the slag thickness, slag area coverage and the slag covering rate information range in multiple and different classification standards and currently
The corresponding informance of molten iron is compared, and makes current quantity of slag grade for current molten iron；
The processor obtains slag thickness, slag area coverage and slag covering rate information range in multiple and different classification standards,
To obtain the above- mentioned information in multiple and different classification standards under environmental condition corresponding with current operating environment, wherein described
Environmental condition includes at least one of: heat (batch) number, steel grade, molten iron temperature, Ti content, silicone content.
2. a kind of molten iron drossing measurement and control system based on image procossing according to claim 1, which is characterized in that
The method for carrying out image procossing includes at least one of: dyeing, broken line covering.
3. a kind of molten iron drossing measurement and control system based on image procossing according to claim 1, which is characterized in that
The mucking machine includes nitrogen tube；The operative employee carries out taking off slag operation in a manual manner, is the operative employee in image procossing
Nitrogen tube is proposed after the several seconds of output and carries out taking off slag operation in a manual manner；The operative employee carries out the behaviour that skims in an automatic fashion
Make, do not propose nitrogen tube after image procossing output for the operative employee and carries out taking off slag operation in an automatic fashion.
4. a kind of molten iron drossing measurement and control system based on image procossing according to claim 1, which is characterized in that
After the current quantity of slag grade is compared by the processor with preassigned quantity of slag grade threshold, sentenced according to comparison result
It is fixed to continue or stop to skim.
5. a kind of control of the molten iron drossing measurement and control system according to claim 1-4 based on image procossing
Method processed, comprising:
The image information of molten iron and slag in real-time acquisition ladle, ladle；
It determines effective analyzed area in described image information, Threshold segmentation is carried out to effective analyzed area, identifies tapping
Water and slag, and obtain slag thickness, slag area coverage and slag covering rate information；
Image procossing is carried out with slag part image to the molten iron in analyzed area effective in described image information respectively and is exported, is made
Operative employee can readily differentiate the distribution situation of molten iron discharging and slag；
Rate information is covered according to the slag, makes current quantity of slag grade using standard database is skimmed for current molten iron, and will
The current quantity of slag grade is compared with preassigned quantity of slag grade threshold.
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| CN111349753A (en) * | 2020-05-08 | 2020-06-30 | 衡阳镭目科技有限责任公司 | Hot metal ladle slag-raking control system, slag-raking machine and automatic slag-raking control method for hot metal ladle |
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| CN112828275B (en) * | 2020-12-30 | 2022-08-09 | 北京首钢自动化信息技术有限公司 | Automatic slag skimming method, device and system |
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