CN117011210A - Sintering state detection method, system, electronic equipment and storage medium - Google Patents
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Abstract
The application discloses a sintering state detection method, which comprises the following steps: collecting visible light images and infrared thermal images of the tail section of the sintering machine; wherein the tail section comprises a plurality of red fire layer communicating domains; determining the area of the red fire layer connected domain by using the visible light image; determining the gravity center position of the red fire layer connected domain by utilizing the infrared thermal image; and determining the sintering state according to the area and the gravity center position of the red fire layer communicating region. If the sintering state is an over-burning state or an under-burning state, the application calculates the optimal machine speed according to the gravity center position of the red fire layer communication domain and the current machine speed, and then adjusts the sintering machine according to the optimal machine speed. The application also discloses a sintering state detection system, a storage medium and electronic equipment, which have the beneficial effects.
Description
Technical Field
The present application relates to the field of sintering machine control technologies, and in particular, to a method and a system for detecting a sintering state, an electronic device, and a storage medium.
Background
The accurate control of the position of the sintering end point at the bellows is an important condition for fully utilizing the effective area of the sintering machine and ensuring high quality, high yield and cooling efficiency. If the sintering end point is advanced, the sintering area is not fully utilized, and meanwhile, a large amount of wind passes through the rear part of the sintering machine, so that the air draft system is damaged, and the yield of the sintering ore is reduced. Although the mechanical strength of the sinter is improved due to the over-firing, the FeO content in the sinter is also improved, the reduction performance of the sinter is deteriorated, the service life of the trolley grate bar is shortened, and meanwhile, the energy is wasted. If the sintering end point is lagged, the raw materials are inevitably increased, the return ore quantity is increased, the yield is reduced, in addition, the fuel which is not burnt out is discharged into a cooler, and the equipment is damaged by continuous combustion, so that the cooling efficiency is reduced.
Therefore, how to accurately detect the sintering state is a technical problem that a person skilled in the art needs to solve at present.
Disclosure of Invention
The application aims to provide a sintering state detection method, a sintering state detection system, electronic equipment and a storage medium, which can accurately detect the sintering state.
In order to solve the above technical problems, the present application provides a method for detecting a sintering state, including:
collecting visible light images and infrared thermal images of the tail section of the sintering machine; wherein the tail section comprises a plurality of red fire layer communicating domains;
determining the area of the red fire layer connected domain by using the visible light image;
determining the gravity center position of the red fire layer connected domain by utilizing the infrared thermal image;
and determining the sintering state according to the area and the gravity center position of the red fire layer communicating region.
Optionally, determining the area of the red fire layer connected domain by using the visible light image includes:
performing binarization processing on the visible light image to obtain a binarized visible light image;
and identifying the outline of each red fire layer connected domain according to the binarized visible light image, and calculating the area of each red fire layer connected domain.
Optionally, after identifying the contour of each red fire layer connected domain according to the binarized visible light image, the method further includes:
and removing the red fire layer connected domain with the number of pixels smaller than the preset number in the binarized visible light image.
Optionally, determining the center of gravity position of the red fire layer connected domain by using the infrared thermal image includes:
registering and fusing the binarized visible light image and the infrared thermal image to obtain the position information of each red fire layer connected domain in an infrared temperature matrix corresponding to the infrared thermal image;
and calculating the gravity center position of each red fire layer connected domain according to the position information of each red fire layer connected domain in the infrared temperature matrix.
Optionally, determining the sintering state according to the area and the gravity center position of the red fire layer connected domain includes:
calculating the overburning degree OB by using a first calculation formula delta ；
If the degree of overburning OB delta If the sintering state of the sintering machine is larger than the first preset value, judging that the sintering state of the sintering machine is an overburning state;
wherein the first calculation formula is OB delta =d (S) × (KB 1-Yc)/H; yc is the ordinate of the gravity center of the red fire layer connected domain, KB1 is a preset parameter, KB 1E [ H/5,2H/5]]H is the thickness of the material layer;s is the total area of all the red fire layer connected domains, and PT is the total pixel number of all the red fire layer connected domains in the infrared thermal image.
Optionally, determining the sintering state according to the area and the gravity center position of the red fire layer connected domain includes:
determining the area of the upper red fire layer communicating region in the visible light image according to the area of the red fire layer communicating region;
calculating the degree of under-burn UB using the second calculation formula delta ；
If the degree of underburn UB delta If the sintering state of the sintering machine is larger than the second preset value, judging that the sintering state of the sintering machine is an underburn state;
wherein the second calculation formula is UB delta =d (Sa) × (Yc-KB 1 ')/H, yc is the ordinate of the center of gravity of the red flame communicating domain, KB1' is a preset parameter, KB1' ∈ [ H/5,2H/5]]H is the thickness of the material layer;sa is the total area of the upper red fire layer connected domain, PT is the total pixel number of all the red fire layer connected domains in the infrared thermal image, and k is a preset constant.
Optionally, after determining the sintering state according to the area and the gravity center position of the red fire layer connected domain, the method further comprises:
if the sintering state is an over-sintering state or an under-sintering state, calculating the optimal machine speed of the sintering machine according to the gravity center position of the red fire layer communication domain and the current machine speed;
and adjusting the sintering machine according to the optimal machine speed.
The application also provides a sintering state detection system, which comprises:
the image acquisition module is used for acquiring visible light images and infrared thermal images of the tail section of the sintering machine; wherein the tail section comprises a plurality of red fire layer communicating domains;
the area determining module is used for determining the area of the red fire layer connected domain by utilizing the visible light image;
the gravity center determining module is used for determining the gravity center position of the red fire layer connected domain by utilizing the infrared thermal image;
and the sintering state detection module is used for determining the sintering state according to the area and the gravity center position of the red fire layer communicating region.
The application also provides a storage medium on which a computer program is stored, which when executed implements the steps of the above-described sintering state detection method.
The application also provides an electronic device, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps executed by the sintering state detection method when calling the computer program in the memory.
The application provides a sintering state detection method, which comprises the following steps: collecting visible light images and infrared thermal images of the tail section of the sintering machine; wherein the tail section comprises a plurality of red fire layer communicating domains; determining the area of the red fire layer connected domain by using the visible light image; determining the gravity center position of the red fire layer connected domain by utilizing the infrared thermal image; and determining the sintering state according to the area and the gravity center position of the red fire layer communicating region.
The method comprises the steps of collecting a visible light image and an infrared thermal image of a tail section of a sintering machine, determining the area of a red fire layer communicating region by using the visible light image, determining the gravity center position of the red fire layer communicating region by using the infrared thermal image, and further determining the sintering state according to the area and the gravity center position of the red fire layer communicating region. Compared with the mode of determining the sintering state by means of manual experience, the method and the device for determining the sintering state by the aid of the red flame layer communication domain area and the gravity center position can accurately detect the sintering state. The application also provides a sintering state detection system, an electronic device and a storage medium, which have the beneficial effects and are not described herein.
Drawings
For a clearer description of embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a flowchart of a method for detecting a sintering state according to an embodiment of the present application;
FIG. 2 is a schematic diagram of the working principle of a tail section detection device according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a binocular camera and a sintering machine according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a machine speed adjustment principle according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a sintering state detection system according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, fig. 1 is a flowchart of a method for detecting a sintering state according to an embodiment of the application.
The specific steps may include:
s101: collecting visible light images and infrared thermal images of the tail section of the sintering machine;
the embodiment can be applied to a tail section detection device based on a binocular camera, please refer to fig. 2, fig. 2 is a schematic diagram of an operating principle of the tail section detection device provided by the embodiment of the application, a sensor of a sintering machine is used for detecting a position of a tail section, and the binocular camera collects a visible light image and an infrared thermal image of the tail section of the sintering machine through an observation hole. The compressed air is input to reduce the influence of dust on shooting, and the cooling water is used for ensuring that the binocular camera is at a normal working temperature. The binocular camera sends the visible light image and the infrared thermal image to the tail section detection device through the gigabit network cable and the gigabit network card, and the sintering process parameter server interactively sinters the machine speed of the machine through the network card and the tail section detection device. Referring to fig. 3, fig. 3 is a schematic diagram illustrating a positional relationship between a binocular camera and a sintering machine according to an embodiment of the present application, where the binocular camera may be opposite to a traveling direction of a trolley of the sintering machine. The cross section of the tail comprises a plurality of red fire layers, and the red fire layers are connected together to form a red fire layer communicating domain.
S102: and determining the area of the red fire layer connected domain by using the visible light image.
S103: and determining the gravity center position of the red fire layer connected domain by using the infrared thermal image.
As shown in fig. 3, the binocular camera is installed at the tail of the sintering machine, and the binocular camera comprises a thermal infrared imager and a visible light camera. Because of the high contrast problem at the tail, the color of the high-temperature part of the red fire layer area in the visible light image is seriously distorted, so that the gravity center position of the red fire layer extracted by the visible light image is seriously deviated, the final result using the characteristic is affected, the problem does not exist in the infrared thermal image, and the temperature data acquired by the infrared thermal imager is influenced by natural light and can be ignored; the light contrast at the edge of the red fire layer is larger, but the extraction of the outline of the red fire layer is greatly facilitated, and accurate position information can be provided for the red fire layer communicating region through the visible light image, so that the embodiment can extract the gravity center position and the area of the red fire layer communicating region through binocular information fusion.
S104: and determining the sintering state according to the area and the gravity center position of the red fire layer communicating region.
The sintering state comprises a normal state, an overburning state and an underfiring state, different sintering states correspond to the areas and the gravity center positions of different red fire layer communicating domains, and the sintering state is determined according to the areas and the gravity center positions of the red fire layer communicating domains so as to adjust the speed of the sintering machine according to the sintering state.
The embodiment collects a visible light image and an infrared thermal image of a tail section of the sintering machine, determines the area of a red fire layer communicating region by using the visible light image, determines the gravity center position of the red fire layer communicating region by using the infrared thermal image, and further determines the sintering state according to the area and the gravity center position of the red fire layer communicating region. Compared with a mode of determining the sintering state by means of manual experience, the embodiment determines the sintering state according to the area and the gravity center position of the red fire layer communicating region, and can accurately detect the sintering state.
The following provides a scheme for intelligently identifying and controlling sintering overburning based on tail section analysis, and the overburning degree OB in the embodiment delta The identification is carried out through two characteristics, namely the area S of the red fire layer communicating region and the gravity center position Yc of the red fire layer communicating region, and the characteristics have a certain relation with the overburning degree. The position and the size of the red fire layer under the normal sintering condition fall in a relatively fixed effective range, but not a certain specific value, the thickness of the material layer of the sintering machine is set to be H, and the area of the communication area of each red fire area of the cross section image of the tail of the machine is Sn epsilon [ Sl, sh ]](n is the number of red fire layer connected domains), and the ordinate of the gravity center of the red fire layer connected domains is Yn E [ YI, yh)]The specific process comprises the following steps:
step A1: and obtaining the optimal binocular image at the same time, and performing binarization processing on the visible light image.
The optimal binocular image refers to a visible light image and an infrared thermal image with a shooting angle perpendicular to a tail section (also called a sintered cake section), and without dust interference. Specifically, the visible light image is subjected to binarization processing (the pixel gray value of the red light layer is 1, and the gray values of the rest pixels are 0) to obtain a binarized visible light image.
Step A2: and extracting the outline of the red fire layer connected domain in the visible light image, and acquiring the position information of each red fire layer connected domain.
The step can identify the outline of each red fire layer connected domain by using a binarized visible light image, and further determine the position information and the area of each red fire layer connected domain based on the outline. Further, after identifying the outline of each red fire layer connected domain according to the binarized visible light image, the red fire layer connected domains with the number of pixels smaller than the preset number in the binarized visible light image can be removed, and further position information of the rest red fire layer connected domains is obtained. Specifically, in this embodiment, the red fire layer connected domain with the number of the red fire connected region pixels being less than 1/k of the total pixels of the image may be discarded (k e [2800,3200] is a certain value).
Step A3: and the positions of the red fire layer connected domains in the infrared temperature matrix are reflected through the registered relationship.
The binary visible light image and the infrared thermal image can be registered and fused to obtain the position information of each red fire layer connected domain in the infrared temperature matrix corresponding to the infrared thermal image; and calculating the gravity center position of each red fire layer connected domain according to the position information of each red fire layer connected domain in the infrared temperature matrix. The registration fusion process is as follows: the infrared thermal image and the binarized visible light image are calibrated, the scaling factor of the infrared thermal image relative to the binarized visible light image is obtained, the offset distance of the infrared thermal image relative to the binarized visible light image is obtained, the two images are overlapped, finally, the registered and fused image is obtained, and the position information of each connected red fire area in the infrared temperature matrix is obtained through inverse calculation.
Step A4: calculating the area and the gravity center position of the red fire layer connected domain, and judging whether the red fire layer connected domain is over-burned or not; if yes, enter step A5; if not, go to step A1.
The area process of calculating the red fire layer connected domain in the binarized visible light image is as follows:
S i ＝∑g(x，y)(i＝1...n)；
S i the area of the i-th red-fire layer connected domain is represented, and g (x, y) represents the gray value of the binarized pixel.
The process of calculating the barycenter ordinate Yc of the red fire layer connected domain through the infrared temperature matrix is as follows:
y ij representing the ordinate, t, of the jth pixel in the ith red fire layer connected domain ij Representing the temperature value of the j-th pixel in the i-th connected red fire region.
Step A5: and calculating the degree of overburning.
The area size and the position of the gravity center of the red fire layer connected domain are closely related to the overburning degree, wherein the main factors are the positions of the red fire layer connected domain, so that the red fire layer connected domain is used as a measure of the overburning degree. According to experience, under normal sintering conditions, the position range of the center of gravity of the red fire layer in the tail section is generally [ H/5,2H/5] (taking the grate plate as a reference, and H as the thickness of the layer).
Specifically, in this embodiment, the first calculation formula may be used to calculate the overburning degree OB delta The method comprises the steps of carrying out a first treatment on the surface of the If the degree of overburning OB delta If the sintering state of the sintering machine is larger than the first preset value, judging that the sintering state of the sintering machine is an overburning state;
the first calculation formula is OB delta =d (S) × (KB 1-Yc)/H; yc is the ordinate of the gravity center of the red fire layer connected domain, KB1 is a preset parameter, KB 1E [ H/5,2H/5]]，Yc∈[0,H/5]H is the thickness of the material layer;s is the total area of all the red fire layer connected domains, and PT is the total pixel number of all the red fire layer connected domains in the infrared thermal image.
Step A6: and adjusting the speed of the sintering machine based on the overburning adjustment strategy so as to enable the sintering state to be recovered to be normal.
And if the sintering state is an overburning state, calculating the optimal machine speed of the sintering machine according to the gravity center position of the red fire layer communicating region and the current machine speed so as to adjust the sintering machine according to the optimal machine speed.
Optimal speed SP need The calculation formula of (2) is as follows: SP (service provider) need ＝KB2*(1-Yc/H)*SP now +KB3；
Wherein KB2 ε [5/4,5/3 ]]，KB3<0.1m/min, which are all constant; yc E [0, H/5]，SP now Is the current speed. The present embodiment may be based on an optimal speed SP need The intelligent speed adjustment can specifically utilize an intelligent control model based on the overburning degree to adjust the speed of the burning machine, please refer to table 1:
TABLE 1 overburn control strategy table
| Degree of overburning | Adjustment of | Adjusting the interval |
| 0.1>abs(OBdelta)>＝0.01 | Sp＝sp+0.1 | For 5 minutes |
| 0.2>abs(OBdelta)>＝0.1 | Sp＝sp+0.2 | For 5 minutes |
| 0.4>abs(OBdelta)>＝0.2 | Sp＝sp+0.3 | For 5 minutes |
| abs(OBdelta)<0.01 | Not adjust |
The embodiment relies on a method for controlling the speed SP_speed of a sintering machine to adjust the sintering end point to a proper position in the sintering process, and the intelligent recognition of the overburning degree OB of the current sintering mixture is established according to the image characteristics of the tail section delta . The embodiment is based on the overburning degree and the current engine speed SP now Calculating the optimal machine speed SP of the current sintering machine need ；
According to the embodiment, an intelligent recognition algorithm is established according to the image characteristics of the cross section of the sintering machine tail, whether the sintering overburning condition exists in the current sintering process is judged, and an intelligent control model is established. When the air permeability of the mixture is not greatly changed, the sintering end point is correctly controlled by accelerating the machine speed; when the air permeability is changed greatly, the thickness of the material layer should be adjusted, and the adaptation of the machine speed should be paid attention to so as to control the end point correctly.
The following provides a scheme for intelligently identifying and controlling sintering under-burning based on tail section analysis, in this embodiment, the under-burning degree UB delta The identification is carried out through two characteristics, namely the area S of the red fire layer communicating region and the gravity center position Yc of the red fire layer communicating region. The position and the size of the red fire layer under the normal sintering condition fall in a relatively fixed effective range, but not a certain specific value, the thickness of the material layer of the sintering machine is set to be H, and the area of each red fire layer communicating domain of the cross section image of the tail is Sn epsilon [ Sl, sh ]](n is the number of connected domains of the red fire layer), and the ordinate of the gravity center of the red fire region is Yn E [ YI, yh)]The specific process comprises the following steps:
step B1: and obtaining the optimal binocular image at the same time, and performing binarization processing on the visible light image.
The optimal binocular image refers to a visible light image and an infrared thermal image which are shot at the same time, wherein the shooting angle is perpendicular to the cross section of the tail (also called as a sintering cake cross section) and has no dust interference. Specifically, the visible light image is subjected to binarization processing (the pixel gray value of the red light layer is 1, and the gray values of the rest pixels are 0) to obtain a binarized visible light image.
Step B2: extracting the outline of the red fire layer connected domain in the visible light image, and acquiring the position information of each red fire layer connected domain;
the step can identify the outline of each red fire layer connected domain by using a binarized visible light image, and further determine the position information and the area of each red fire layer connected domain based on the outline. Further, after identifying the outline of each red fire layer connected domain according to the binarized visible light image, the red fire layer connected domains with the number of pixels smaller than the preset number in the binarized visible light image can be removed, and further position information of the rest red fire layer connected domains is obtained. Specifically, in this embodiment, the red fire layer connected domain with the number of the red fire connected region pixels being less than 1/k of the total pixels of the image may be discarded (k e [2800,3200] is a certain value).
Step B3: and the positions of the red fire layer connected domains in the infrared temperature matrix are reflected through the registered relationship.
The binary visible light image and the infrared thermal image can be registered and fused to obtain the position information of each red fire layer connected domain in the infrared temperature matrix corresponding to the infrared thermal image; and calculating the gravity center position of each red fire layer connected domain according to the position information of each red fire layer connected domain in the infrared temperature matrix. The registration fusion process is as follows: the infrared thermal image and the binarized visible light image are calibrated, the scaling factor of the infrared thermal image relative to the binarized visible light image is obtained, the offset distance of the infrared thermal image relative to the binarized visible light image is obtained, the two images are overlapped, finally, the registered and fused image is obtained, and the position information of each connected red fire area in the infrared temperature matrix is obtained through inverse calculation.
Step B4: calculating the area of the upper red fire layer communicating region and the gravity center position of the red fire layer communicating region, and judging whether the burning is under burning or not; if yes, enter step B5; if not, go to step B1.
The area of the upper half red fire layer communication domain in the visible light image can be determined according to the area of the red fire layer communication domain in the binarized visible light image:
S i ＝∑g(x，y)(i＝1...n)；
S i the area of the i-th red fire layer connected domain is represented, g (x, y) represents the gray value of the binarized pixel, yci represents the gravity center position of the i-th red fire layer connected domain, sa is the total area of the upper half red fire layer connected domain, PT is the total pixel number of all the red fire layer connected domains in the infrared thermal image, and n is the number of the red fire layer connected domains.
The barycentric ordinate of the red fire region is calculated by the infrared temperature matrix as follows:
y ij representing the ordinate, t, of the jth pixel in the ith red fire layer connected domain ij Representing the temperature value of the j-th pixel in the i-th connected red fire region.
Step B5: and calculating the degree of the underburn.
The size of the area of the red-fire layer connected domain and the position of the gravity center are closely related to the degree of under-burning, wherein the main factor is the position of the red-fire layer connected domain, so that the position of the red-fire layer connected domain is used as a measure of the degree of under-burning. According to experience, under normal sintering conditions, the position range of the center of gravity of the red fire layer in the tail section is generally [ H/5,2H/5] (taking the grate plate as a reference, and H as the thickness of the layer).
Specifically, in this embodiment, the second calculation formula may be used to calculate the underburn degree UB delta The method comprises the steps of carrying out a first treatment on the surface of the If the degree of underburn UB delta If the sintering state of the sintering machine is larger than the second preset value, judging that the sintering state of the sintering machine is an underburn state;
wherein the second calculation formula is UB delta =d (Sa) × (Yc-KB 1 ')/H, yc is the ordinate of the center of gravity of the red flame communicating domain, KB1' is a preset parameter, KB1' ∈ [ H/5,2H/5]]，Yc∈[H/2,H]H is the thickness of the material layer;sa is the total area of the upper red fire layer communicating region (the total area of the upper red fire region of the section of the sintering cake), PT is the total pixel number of all the red fire layer communicating regions in the infrared thermal image (namely the total pixels of the section of the sintering cake at the tail of the machine in the infrared image), k is a preset constant, and k is [2800,3200]]。
Step B6: and adjusting the speed of the sintering machine based on the underburn adjustment strategy so as to enable the sintering state to be recovered to be normal.
And if the sintering state is a underburn state, calculating the optimal machine speed of the sintering machine according to the gravity center position of the red fire layer communication domain and the current machine speed so as to adjust the sintering machine according to the optimal machine speed.
Optimal speed SP need The calculation formula of (2) is as follows: SP (service provider) need ＝KB2*(1-Yc/H)*SP now +KB3；
Wherein KB2 ε [5/4,5/3 ]]，KB3<0.1m/min, which are all constant; yc E [ H/2, H]，SP now Is the current speed.
Specifically, the present embodiment may be based on an optimal engine speed SP need The intelligent speed adjustment can specifically utilize an intelligent control model based on the overburning degree to adjust the speed of the burning machine, please refer to table 2:
TABLE 2 underburn control strategy table
| Degree of underburn | Adjustment of | Adjusting the interval |
| 0.3>abs(UBdelta)>＝0.1 | Sp＝sp-0.1 | For 5 minutes |
| 0.6>abs(UBdelta)>＝0.3 | Sp＝sp-0.2 | For 5 minutes |
| 0.8>abs(UBdelta)>＝0.6 | Sp＝sp-0.3 | For 5 minutes |
| abs(UBdelta)<0.1 | Not adjust |
The embodiment relies on a method for controlling the speed SP_speed of a sintering machine to adjust the sintering end point to a proper position in the sintering process, and establishes intelligent recognition of the underfiring degree UB of the current sintering mixture according to the image characteristics of the cross section of the tail delta . The embodiment is based on the underburn degree and the current engine speed SP now Calculating the optimal machine speed SP of the current sintering machine need The method comprises the steps of carrying out a first treatment on the surface of the The embodiment is based on the underburn degree and the current engine speed SP now Calculating the optimal machine speed SP of the current sintering machine need ；
According to the embodiment, an intelligent recognition algorithm is established according to the image characteristics of the cross section of the sintering machine tail, whether the sintering under-burning condition exists in the current sintering process is judged, and an intelligent control model is established. When the air permeability of the mixture is not greatly changed, the sintering end point is correctly controlled by slowing down the machine speed; when the air permeability is changed greatly, the thickness of the material layer should be adjusted, and the adaptation of the machine speed should be paid attention to so as to control the end point correctly.
Referring to fig. 4, fig. 4 is a schematic diagram of a machine speed adjustment principle provided by the embodiment of the application, after a machine tail section graph is input into a machine tail section detection device, an over-firing degree or an under-firing degree is determined by using a sintering process parameter intelligent recognition method and a model, an optimal machine speed of a sintering process is determined based on machine tail analysis according to a current machine speed and the over-firing degree or the under-firing degree, and an actual machine speed sp_speed of a sintering machine is adjusted according to the optimal machine speed by using an intelligent control model.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a sintering state detection system according to an embodiment of the present application;
the system may include:
the image acquisition module 501 is used for acquiring a visible light image and an infrared thermal image of a tail section of the sintering machine; wherein the tail section comprises a plurality of red fire layer communicating domains;
the area determining module 502 is configured to determine an area of the red fire layer connected domain using the visible light image;
a gravity center determining module 503, configured to determine a gravity center position of the red fire layer connected domain using the infrared thermal image;
and the sintering state detection module 504 is used for determining the sintering state according to the area and the gravity center position of the red fire layer communication domain.
The embodiment collects a visible light image and an infrared thermal image of a tail section of the sintering machine, determines the area of a red fire layer communicating region by using the visible light image, determines the gravity center position of the red fire layer communicating region by using the infrared thermal image, and further determines the sintering state according to the area and the gravity center position of the red fire layer communicating region. Compared with a mode of determining the sintering state by means of manual experience, the embodiment determines the sintering state according to the area and the gravity center position of the red fire layer communicating region, and can accurately detect the sintering state.
Further, the area determining module 502 is configured to perform binarization processing on the visible light image to obtain a binarized visible light image; and the method is also used for identifying the outline of each red fire layer connected domain according to the binarized visible light image and calculating the area of each red fire layer connected domain.
Further, the method further comprises the following steps:
and the filtering module is used for removing the red fire layer connected domains with the pixel number smaller than the preset number in the binarized visible light image after the outline of each red fire layer connected domain is identified according to the binarized visible light image.
Further, the gravity center determining module 503 is configured to perform registration fusion on the binarized visible light image and the infrared thermal image, so as to obtain position information of each red fire layer connected domain in an infrared temperature matrix corresponding to the infrared thermal image; and the method is also used for calculating the gravity center position of each red fire layer connected domain according to the position information of each red fire layer connected domain in the infrared temperature matrix.
Further, the sintering state detection module 504 is configured to:
calculating the overburning degree OB by using a first calculation formula delta ；
If the degree of overburning OB delta If the sintering state of the sintering machine is larger than the first preset value, judging that the sintering state of the sintering machine is an overburning state;
wherein the first calculation formula is OB delta =d (S) × (KB 1-Yc)/H; yc is the ordinate of the gravity center of the red fire layer connected domain, KB1 is a preset parameter, KB 1E [ H/5,2H/5]]H is the thickness of the material layer;s is the total area of all the red fire layer connected domains, and PT is the total pixel number of all the red fire layer connected domains in the infrared thermal image.
Further, the sintering state detection module 504 is configured to:
determining the area of the upper red fire layer communicating region in the visible light image according to the area of the red fire layer communicating region;
calculating the degree of under-burn UB using the second calculation formula delta ；
If the degree of underburn UB delta If the sintering state of the sintering machine is larger than the second preset value, judging that the sintering state of the sintering machine is an underburn state;
wherein the second calculation formula is UB delta =d (Sa) × (Yc-KB 1 ')/H, yc is the ordinate of the center of gravity of the red flame communicating domain, KB1' is a preset parameter, KB1' ∈ [ H ]5,2H/5]H is the thickness of the material layer;sa is the total area of the upper red fire layer connected domain, PT is the total pixel number of all the red fire layer connected domains in the infrared thermal image, and k is a preset constant.
Further, the method further comprises the following steps:
the machine speed adjusting module is used for calculating the optimal machine speed of the sintering machine according to the gravity center position and the current machine speed of the red fire layer communicating domain if the sintering state is an overburning state or an underburning state after the sintering state is determined according to the area and the gravity center position of the red fire layer communicating domain; and the device is also used for adjusting the sintering machine according to the optimal machine speed.
Since the embodiments of the system portion and the embodiments of the method portion correspond to each other, the embodiments of the system portion refer to the description of the embodiments of the method portion, which is not repeated herein.
The present application also provides a storage medium having stored thereon a computer program which, when executed, performs the steps provided by the above embodiments. The storage medium may include: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The application also provides an electronic device, which can comprise a memory and a processor, wherein the memory stores a computer program, and the processor can realize the steps provided by the embodiment when calling the computer program in the memory. Of course the electronic device may also include various network interfaces, power supplies, etc.
In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A method for detecting a sintering state, comprising:
collecting visible light images and infrared thermal images of the tail section of the sintering machine; wherein the tail section comprises a plurality of red fire layer communicating domains;
determining the area of the red fire layer connected domain by using the visible light image;
determining the gravity center position of the red fire layer connected domain by utilizing the infrared thermal image;
and determining the sintering state according to the area and the gravity center position of the red fire layer communicating region.
2. The method according to claim 1, wherein determining the area of the red flame layer connected region using the visible light image, comprises:
performing binarization processing on the visible light image to obtain a binarized visible light image;
and identifying the outline of each red fire layer connected domain according to the binarized visible light image, and calculating the area of each red fire layer connected domain.
3. The method according to claim 2, further comprising, after identifying the outline of each of the red flame layer connected domains from the binarized visible light image:
and removing the red fire layer connected domain with the number of pixels smaller than the preset number in the binarized visible light image.
4. The method according to claim 2, wherein determining the barycenter position of the red flame layer connected region using the infrared thermal image comprises:
registering and fusing the binarized visible light image and the infrared thermal image to obtain the position information of each red fire layer connected domain in an infrared temperature matrix corresponding to the infrared thermal image;
and calculating the gravity center position of each red fire layer connected domain according to the position information of each red fire layer connected domain in the infrared temperature matrix.
5. The method according to claim 4, wherein determining the sintering state based on the area and the gravity center position of the red-fire layer communicating region comprises:
calculating the overburning degree OB by using a first calculation formula delta ；
If the degree of overburning OB delta If the sintering state of the sintering machine is larger than the first preset value, judging that the sintering state of the sintering machine is an overburning state;
wherein the first calculation formula is OB delta =d (S) × (KB 1-Yc)/H; yc is the ordinate of the gravity center of the red fire layer connected domain, KB1 is a preset parameter, KB 1E [ H/5,2H/5]]H is the thickness of the material layer;s is the total area of all the red fire layer connected domains, and PT is the total pixel number of all the red fire layer connected domains in the infrared thermal image.
6. The method according to claim 1, wherein determining the sintering state based on the area and the gravity center position of the red flame layer communicating region comprises:
determining the area of the upper red fire layer communicating region in the visible light image according to the area of the red fire layer communicating region;
calculating the degree of under-burn UB using the second calculation formula delta ；
If the degree of underburn UB delta If the sintering state of the sintering machine is larger than the second preset value, judging that the sintering state of the sintering machine is an underburn state;
wherein the second calculation formula is UB delta =d (Sa) × (Yc-KB 1 ')/H, yc is the ordinate of the center of gravity of the red flame communicating domain, KB1' is a preset parameter, KB1' ∈ [ H/5,2H/5]]H is the thickness of the material layer;sa is the total area of the upper red fire layer connected domain, PT is the total pixel number of all the red fire layer connected domains in the infrared thermal image, and k is a preset constant.
7. The method according to any one of claims 1 to 6, characterized by further comprising, after determining a sintered state from an area and a gravity center position of the red flame layer communicating region:
if the sintering state is an over-sintering state or an under-sintering state, calculating the optimal machine speed of the sintering machine according to the gravity center position of the red fire layer communication domain and the current machine speed;
and adjusting the sintering machine according to the optimal machine speed.
8. A sintering state detection system, comprising:
the image acquisition module is used for acquiring visible light images and infrared thermal images of the tail section of the sintering machine; wherein the tail section comprises a plurality of red fire layer communicating domains;
the area determining module is used for determining the area of the red fire layer connected domain by utilizing the visible light image;
the gravity center determining module is used for determining the gravity center position of the red fire layer connected domain by utilizing the infrared thermal image;
and the sintering state detection module is used for determining the sintering state according to the area and the gravity center position of the red fire layer communicating region.
9. An electronic device comprising a memory and a processor, the memory having stored therein a computer program, the processor implementing the steps of the sintering state detection method according to any of claims 1 to 7 when the computer program in the memory is invoked by the processor.
10. A storage medium having stored therein computer executable instructions which, when loaded and executed by a processor, implement the steps of the sintering state detection method of any of claims 1 to 7.
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