阅读说明：本技术 一种烧结料层厚度的在线检测方法及在线检测系统 (Online detection method and online detection system for thickness of sintering material layer ) 是由 温荣耀 王兆才 谭潇玲 于 2021-09-08 设计创作，主要内容包括：本发明公开一种烧结料层厚度的在线检测方法及在线检测系统,其中,该在线检测方法包括如下步骤：步骤S1,拍摄获取装有烧结料的烧结台车的实时图像；步骤S2,在所述实时图像中标记预设的若干基准点；步骤S3,通过各所述基准点确定所述烧结台车内壁的横断面；步骤S4,确定烧结料层的顶面与所述横断面的相交线；步骤S5,通过各所述基准点与所述相交线形成的几何模型以及各所述基准点的基准高度值计算所述相交线上的选定点所对应的高度值。上述在线检测方法及在线检测系统可以对烧结料层厚度进行检测。(The invention discloses an online detection method and an online detection system for the thickness of a sintering material layer, wherein the online detection method comprises the following steps: step S1, shooting to obtain a real-time image of the sintering trolley filled with the sintering material; step S2, marking a plurality of preset reference points in the real-time image; step S3, determining the cross section of the inner wall of the sintering trolley through the datum points; step S4, determining the intersection line of the top surface of the sinter bed and the cross section; step S5, calculating a height value corresponding to a selected point on the intersection line from a geometric model formed by each of the reference points and the intersection line and a reference height value of each of the reference points. The online detection method and the online detection system can detect the thickness of the sintering material layer.)

1. The on-line detection method for the thickness of the sintering material layer is characterized by comprising the following steps of:

step S1, shooting to obtain a real-time image of the sintering trolley (1) filled with the sintering material;

step S2, marking a plurality of preset reference points in the real-time image;

step S3, determining the cross section of the inner wall of the sintering trolley (1) through the reference points;

step S4, determining the intersection line of the top surface of the sinter bed and the cross section;

step S5, calculating a height value corresponding to a selected point on the intersection line from a geometric model formed by each of the reference points and the intersection line and a reference height value of each of the reference points.

2. The method for on-line detection of the thickness of the sintering material layer according to the claim 1, characterized in that, the method further comprises the steps S01-S05 before the step S2;

step S01, selecting a first upper reference point and a first lower reference point on a first side of a set cross section of the empty sintering trolley (1), and selecting a second upper reference point and a second lower reference point on a second side of the set cross section, wherein the reference points comprise the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point;

step S02, acquiring reference height values of the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point;

a step S03 of setting development marks at the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point;

a step S04 of capturing a reference image including the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point;

step S05 of acquiring first reference coordinate positions of the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point in the reference image;

the marking of a number of preset reference points in the real-time image in the step S2 includes: marking the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point in the real-time image by the first reference coordinate position.

3. The online detection method for the thickness of the sintering material layer according to the claim 2, characterized in that, the method further comprises the steps S06-S08 after the step S04;

step S06, connecting the first upper reference point and the second upper reference point to obtain an upper reference line, and connecting the first lower reference point and the second lower reference point to obtain a lower reference line;

step S07, equally dividing the upper reference line to obtain equal division points, equally dividing the lower reference line to obtain lower equal division points, where the reference points further include the equal division points and the lower equal division points;

step S08, acquiring a second reference coordinate position of the upper equally dividing point and the lower equally dividing point in the reference image;

the marking of a plurality of preset reference points in the real-time image in the step S2 further includes: and marking the upper equally dividing point and the lower equally dividing point in the real-time image through the second reference coordinate position.

4. The method for on-line detection of the thickness of the sintered material layer according to claim 2, wherein the first lower reference point is an intersection point of the first side edge and the bottom edge of the set cross section, and the second lower reference point is an intersection point of the second side edge and the bottom edge; and/or the presence of a gas in the gas,

the first upper reference point is a vertex of the first side edge, and the second upper reference point is a vertex of the second side edge.

5. The method for the on-line detection of the thickness of the sintered material layer according to any one of claims 1 to 4, wherein the selected points are the quartering points of the intersecting lines.

6. An on-line detection system for the thickness of a sintering material layer is characterized by comprising:

a camera assembly (2) for capturing real-time images of the sintering pallet (1) with sintering material;

and the controller (3) is used for marking a plurality of preset reference points in the real-time image, determining the cross section of the inner wall of the sintering trolley (1) according to the reference points, determining the intersection line of the top surface of the sintering material layer and the cross section, and calculating the height value corresponding to the selected point on the intersection line through a geometric model formed by the reference points and the intersection line and the reference height value of the reference points.

7. The system for on-line detection of the thickness of the sinter bed as claimed in claim 6, wherein the controller (3) has coordinate values of the reference points pre-stored therein, and the controller (3) is configured to mark the reference points in the real-time image according to the coordinate values.

8. The system for the on-line detection of the thickness of the sinter bed as claimed in claim 7, wherein the empty sintering pallet (1) has a first upper and a first lower reference point on a first side of the set cross-section and a second upper and a second lower reference point on a second side;

the camera assembly (2) is further configured to capture a reference image including the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point, and the controller (3) is configured to receive the reference image and to acquire first reference coordinate values of the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point in the reference image, the reference points including the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point, the coordinate values including the first reference coordinate value.

9. The on-line sintered material layer thickness detecting system according to claim 8, wherein said first upper reference point, said first lower reference point, said second upper reference point and said second lower reference point are provided with developing marks.

10. The system for on-line detection of the thickness of the sinter bed as claimed in claim 8, wherein the controller is further configured to connect the first upper reference point and the second upper reference point to obtain an upper reference line, connect the first lower reference point and the second lower reference point to obtain a lower reference line, equally divide the upper reference line to obtain an equal division point, equally divide the lower reference line to obtain a lower equal division point, the reference points further include the equal division point and the lower equal division point, and further configured to obtain a second reference coordinate position of the equal division point and the lower equal division point in the reference image, and the coordinate value further includes the second reference coordinate value.

11. The system for the on-line detection of the thickness of the sintered material layer according to any of the claims 6 to 10, characterized in that the camera assembly (2) comprises a camera mounted between the distributor (5) and the igniter (6);

the distance between the camera and the top surface of the sinter bed (4) is 0.5m-1m, and the camera is arranged at the transverse middle position of the sinter bed (4).

Technical Field

The invention relates to the technical field of sintering detection, in particular to an online detection method and an online detection system for the thickness of a sintering material layer.

Background

The thickness of the material layer is an important parameter in sintering production and is one of important indexes for examining sintering operation, and with the development of iron-making technology, the requirement of a blast furnace on sintered ore is continuously improved, and the adjustment of the thickness of the material layer in the sintering operation is more and more important.

Therefore, how to detect the thickness of the sintering material layer still remains a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide an online detection method and an online detection system for the thickness of a sintering material layer, which can detect the thickness of the sintering material layer.

In order to solve the technical problem, the invention provides an online detection method of the thickness of a sintering material layer, which comprises the following steps: step S1, shooting to obtain a real-time image of the sintering trolley filled with the sintering material; step S2, marking a plurality of preset reference points in the real-time image; step S3, determining the cross section of the inner wall of the sintering trolley through the datum points; step S4, determining the intersection line of the top surface of the sinter bed and the cross section; step S5, calculating a height value corresponding to a selected point on the intersection line from a geometric model formed by each of the reference points and the intersection line and a reference height value of each of the reference points.

The cross section of the inner wall of the sintering trolley is a cross section of the inner wall of the sintering trolley in the direction perpendicular to the running direction of the sintering trolley, the cross section can be determined on a real-time image through a preset datum point, and then the intersection line of the top surface of a sintering material layer and the cross section can be determined. In the geometric model formed by combining the cross section and the intersection line, the reference height value of each datum point is known, and the height value corresponding to a selected point on the intersection line can be easily determined through a similarity criterion, so that the thickness of the sinter layer at the selected point can be determined.

Optionally, the method further comprises step S01-step S05 before the step S2; step S01, selecting a first upper datum point and a first lower datum point on a first side of a set cross section of the empty sintering trolley, and selecting a second upper datum point and a second lower datum point on a second side of the set cross section, wherein the datum points comprise the first upper datum point, the first lower datum point, the second upper datum point and the second lower datum point; step S02, acquiring reference height values of the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point; a step S03 of setting development marks at the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point; a step S04 of capturing a reference image including the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point; step S05 of acquiring first reference coordinate positions of the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point in the reference image; the marking of a number of preset reference points in the real-time image in the step S2 includes: marking the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point in the real-time image by the first reference coordinate position.

Optionally, step S06-step S08 are further included after the step S04; step S06, connecting the first upper reference point and the second upper reference point to obtain an upper reference line, and connecting the first lower reference point and the second lower reference point to obtain a lower reference line; step S07, equally dividing the upper reference line to obtain equal division points, equally dividing the lower reference line to obtain lower equal division points, where the reference points further include the equal division points and the lower equal division points; step S08, acquiring a second reference coordinate position of the upper equally dividing point and the lower equally dividing point in the reference image; the marking of a plurality of preset reference points in the real-time image in the step S2 further includes: and marking the upper equally dividing point and the lower equally dividing point in the real-time image through the second reference coordinate position.

Optionally, the first lower reference point is an intersection point of the first side edge and the bottom edge of the set cross section, and the second lower reference point is an intersection point of the second side edge and the bottom edge; and/or the first upper reference point is the vertex of the first side edge, and the second upper reference point is the vertex of the second side edge.

Optionally, the selected point is a quartering point of the intersecting line.

The invention also provides an online detection system for the thickness of the sintering material layer, which comprises: a camera assembly for capturing a real-time image of the sintering pallet loaded with sintering material; and the controller is used for marking a plurality of preset reference points in the real-time image, determining the cross section of the inner wall of the sintering trolley according to the reference points, determining the intersection line of the top surface of the sintering material layer and the cross section, and calculating the height value corresponding to the selected point on the intersection line through a geometric model formed by the reference points and the intersection line and the reference height value of the reference points.

Optionally, the controller prestores coordinate values of the reference points, and is configured to mark the reference points in the real-time image according to the coordinate values.

Optionally, a first side of the set cross section of the empty sintering trolley is provided with a first upper datum point and a first lower datum point, and a second side is provided with a second upper datum point and a second lower datum point; the camera assembly is further configured to capture a reference image including the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point, and the controller is configured to receive the reference image and to acquire first reference coordinate values of the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point in the reference image, the reference points including the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point, the coordinate values including the first reference coordinate value.

Optionally, the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point are provided with development marks.

Optionally, the controller is further configured to connect the first upper reference point and the second upper reference point to obtain an upper reference line, and connect the first lower reference point and the second lower reference point to obtain a lower reference line, the controller is further configured to equally divide the upper reference line to obtain an equal division point, and equally divide the lower reference line to obtain a lower equal division point, the reference points further include the equal division point and the lower equal division point, the controller is further configured to obtain second reference coordinate positions of the equal division point and the lower equal division point in the reference image, and the coordinate values further include the second reference coordinate value.

Optionally, the camera assembly comprises a camera mounted between the distributor and the igniter; the distance between the camera and the top surface of the sinter bed is 0.5m-1m, and the camera is arranged in the transverse middle position of the sinter bed.

Drawings

FIG. 1 is a schematic flow chart of an embodiment of the method for on-line detection of the thickness of a sintering material layer provided by the present invention;

FIG. 1a is a schematic diagram of a geometric model formed by intersecting points of reference points;

FIG. 2 is a schematic view of a process for obtaining coordinate values;

FIG. 3 is a schematic illustration of a first upper reference point, a first lower reference point, a second upper reference point, and a second lower reference point provided with an empty pallet;

FIG. 4 is a schematic view of a sintering pallet carrying sintering material and having a first upper reference point, a first lower reference point, a second upper reference point, a second lower reference point, and selected points;

FIG. 5 is an enlarged view of a portion of the set cross-sectional location of FIG. 4;

fig. 6 is a schematic structural diagram of an embodiment of an online detection system for the thickness of a sintering material layer provided by the present invention.

The reference numerals in fig. 3-6 are illustrated as follows:

1 sintering trolley, 2 camera components, 3 controllers, 4 sinter layers, 5 distributors and 6 igniters.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

The terms "first," "second," and the like, herein are used for convenience only to describe two or more structures, components, parameters, and the like that are identical or similar in structure and/or function, and do not denote any particular limitation as to order and/or importance.

Referring to fig. 1 to 6, fig. 1 is a schematic flow chart of an embodiment of a method for detecting a thickness of a sintering material layer provided by the present invention, fig. 1a is a schematic structural diagram of a geometric model formed by each reference point and an intersection line, fig. 2 is a schematic flow chart of obtaining coordinate values, fig. 3 is a schematic diagram of a first upper reference point, a first lower reference point, a second upper reference point and a second lower reference point set by an empty sintering pallet, fig. 4 is a schematic diagram of a first upper reference point, a first lower reference point, a second upper reference point and a second lower reference point and each selected point set by an empty sintering pallet carrying sintering material, fig. 5 is a partially enlarged view of a set cross-sectional position in fig. 4, and fig. 6 is a schematic structural diagram of an embodiment of a system for detecting a thickness of a sintering material layer provided by the present invention.

Example one

As shown in fig. 1, an embodiment of the present invention provides an online detection method for a thickness of a sintering material layer, which specifically includes the following steps: step S1, shooting to obtain a real-time image of the sintering trolley 1 filled with the sintering material; step S2, marking a plurality of preset reference points in the real-time image; step S3, determining the cross section of the inner wall of the sintering trolley 1 through the datum points; step S4, determining the intersection line of the top surface and the cross section of the sinter bed; in step S5, a height value corresponding to a selected point on the intersection line is calculated from the geometric model formed by the intersection line and each reference point and the reference height value of each reference point.

The cross section of the inner wall of the sintering trolley 1 refers to the cross section of the inner wall of the sintering trolley 1 in the direction perpendicular to the running direction of the sintering trolley 1, the cross section can be determined on a real-time image through a preset reference point, and further the intersection line of the top surface of the sintering material layer 4 and the cross section can be determined. In the geometric model formed by combining the cross section and the intersection line, the reference height value of each reference point is known, and the height value corresponding to the selected point on the intersection line can be easily determined through a similarity criterion, so that the thickness of the sinter bed 4 at the selected point can be determined.

In detail, referring to fig. 1a, taking the existence of four datum points a1, a2, B1 and B2 as an example, a cross section can be obtained by connecting the four datum points in sequence, and an intersection line A0B0 is formed between the cross section and the top surface of the sinter layer 4; then, a C1 point can be selected from A1B1, a C2 point can be selected from A2B2, and the C1 point and the C2 point are connected to obtain an intersection point C0 point of an intersection line A0B 0; in the real-time image, the distances of A1C1 and C1B1 are determined, and the height value of C1 can be calculated according to the similarity criterion and the reference height values of A1 and B1, and similarly, the height value of C2 can also be calculated; further, since the distance between C1C0 and C0C2 in the real-time image is also determined, the height value of C0 can be calculated according to the similarity criterion and the height values of C1 and C2, that is, the thickness of the sintering material layer at the C0 position can be obtained.

Taking as an example the solution where A1B1 and A2B2 are both parallel to the bottom wall of the pallet 1 and A2B2 is located at the bottom wall, then the heights of C1 and A1 and B1 are the same and can be denoted as H₀C2 is equal to a2 and B2 in height, both 0, and F represents the distance between any two points. The thickness of the sinter layer at the C0 point can then be controlled byAnd (4) calculating.

Here, the number of the datum points is not limited in the embodiments of the present invention, and in a specific practice, a person skilled in the art may select the datum points according to actual needs, but it should be noted that the number of the datum points should be at least three to be able to determine the cross section; the reference height value corresponding to each reference point may be obtained by measurement in advance.

Further, as shown in fig. 2 to 5, a step S01 to a step S05 are further included before the above step S2 to determine a manner of marking the reference point.

In step S01, a first upper reference point and a first lower reference point are selected on a first side of the set cross section of the empty pallet 1, and a second upper reference point and a second lower reference point are selected on a second side of the set cross section. The aforementioned reference points may include a first upper reference point, a first lower reference point, a second upper reference point, and a second lower reference point.

The empty sintering pallet 1 is a sintering pallet 1 that has not yet received a sintering material, i.e., several reference points may be selected before the sintering operation is actually performed. It should be understood that the number of the sintering carriages 1 is plural, and when the reference point is selected, any one of the sintering carriages 1 may be selected, and the set cross section may be any cross section of the sintering carriage 1.

In step S02, reference height values of the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point are acquired. The manner of acquisition may be by actual measurement.

In step S03, the development marks are set at the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point. The developing marker may be a fluorescent agent or the like which is capable of appearing in the image.

In step S04, a reference image including the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point is captured.

In step S05, first reference coordinate positions of the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point in the reference image are acquired.

The coordinate values of the reference points in the reference image and the coordinate values of the reference points in the real-time image are consistent on the premise that the shooting angle is not changed, and thus, the step S2 of marking the preset reference points in the real-time image may specifically be to mark a first upper reference point, a first lower reference point, a second upper reference point and a second lower reference point in the real-time image through the first reference coordinate position.

In addition, a reference image including the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point may be prestored, and then the reference image and the live image may be superimposed by an image superimposing technique, or the reference points may be identified and marked in the live image.

The positions of the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point are not limited herein, and those skilled in the art can determine the positions according to actual needs in specific implementation.

Specifically, in the embodiment of the present invention, the first lower reference point may be an intersection of the first side edge and the bottom edge of the set cross section, the second lower reference point may be an intersection of the second side edge and the bottom edge, the first upper reference point may be a vertex of the first side edge, and the second upper reference point may be a vertex of the second side edge. In this way, the height values of the first lower reference point and the second lower reference point may be zero, the height values of the first upper reference point and the second upper reference point may be the height of the inner space of the pallet 1, and the height values of the respective reference points may be easily determined and may be conveniently calculated later.

In addition to the four first upper reference points, the first lower reference points, the second upper reference points, and the second lower reference points described above, other reference points may be included.

In detail, step S06-step S08 may be further included after step S04; step S06, connecting the first upper reference point and the second upper reference point to obtain an upper reference line, and connecting the first lower reference point and the second lower reference point to obtain a lower reference line; step S07, equally dividing the upper reference line to obtain equal division points, equally dividing the lower reference line to obtain lower equal division points, wherein the reference points also comprise equal division points and lower equal division points; in step S08, a second reference coordinate position of the upper and lower bisectors in the reference image is acquired.

In this way, the marking of the plurality of preset reference points in the real-time image in the aforementioned step S2 may specifically be marking an upper bisector and a lower bisector in the real-time image by the second reference coordinate position. Therefore, when the geometric model is constructed, the corresponding upper equal-division point and the lower equal-division point can be directly connected, and the intersection point of the connecting line and the intersecting line is used as the selected point, so that the calculation of the corresponding height of the selected point can be more convenient.

Of course, it is also possible to construct a geometric model only by the aforementioned first upper reference point, first lower reference point, second upper reference point, and second lower reference point, then construct an upper reference line and a lower reference line in a real-time image, mark the upper bisector and the lower bisector in the upper reference line and the lower reference line, respectively, and then determine the selected point.

It will be appreciated that the selected point is not necessarily obtained by connecting bisectors of the upper and lower reference lines, and may be any point on the intersecting line, such as a quartering point. When the number of the selected points is plural, the thickness values measured at the selected points may be averaged to obtain an average thickness; of course, the thickness of each selected point may be shown separately to guide the uniformity of the transverse cloth.

The way of marking the reference points on the real-time image by the reference points on the reference image is based on the premise that the photographing angle does not change, and the acquisition of the relative positions of the reference points on the reference image under the condition that the photographing angle is determined actually only needs to be performed once, that is, the above-described steps S01 to S08 may be performed only once.

Referring to fig. 5, taking the scheme that A1B1 and A2B2 are both parallel to the bottom wall of the sintering trolley 1 and A2B2 is located at the bottom wall as an example, the heights of C1, D1, E1, A1 and B1 are the same and are marked as H₀The height values of C2, D2, E2, a2 and B2 are also the same, and are all 0, and the distance between two points is represented by F. The thickness of the sinter layer at the D0 point may then passThe thickness of the sinter layer at the E0 position can be calculatedAnd (4) calculating.

Example two

The invention further provides an on-line detection system for the thickness of the sintering material layer, which corresponds to the on-line detection method in the first embodiment, and therefore, the limitations on parameters in the first embodiment and the like are also applicable to the present embodiment.

In detail, the online detection system may include: the camera component 2 is used for shooting a real-time image of the sintering trolley 1 filled with the sintering material; and the controller 3 is used for marking a plurality of preset reference points in the real-time image, determining the cross section of the inner wall of the sintering trolley 1 according to the reference points, determining the intersection line of the top surface of the sintering material layer and the cross section, and calculating the height value corresponding to the selected point on the intersection line through a geometric model formed by the reference points and the intersection line and the reference height value of the reference points.

With this configuration, the controller 3 can easily calculate the height value corresponding to the selected point on the cross section and the top surface of the sinter bed 4 at the selected point by the similarity criterion in the geometric model formed by combining the cross section and the intersection line by receiving the real-time image captured by the camera assembly 2 and marking the preset reference point in the real-time image to determine the cross section and thus the intersection line of the cross section and the top surface of the sinter bed 4, and thus can determine the thickness of the sinter bed 4 at the selected point.

Similar to the first embodiment, the controller 3 may mark each reference point in the real-time image according to the coordinate value, in this case, the controller 3 may pre-store the coordinate value of each reference point, and then the controller 3 may mark each reference point in the real-time image according to the coordinate value.

In a specific practice, a cross section may be selected as a set cross section in the empty sintering pallet 1, the set cross section may include a bottom side and opposite first and second side edges, wherein the first side edge may be provided with a first upper reference point and a first lower reference point, and the second side edge may be provided with a second upper reference point and a second lower reference point; the camera assembly 2 is further configured to capture a reference image including a first upper reference point, a first lower reference point, a second upper reference point and a second lower reference point, the controller 3 is configured to receive the reference image and to be able to acquire first reference coordinate values of the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point in the reference image, the reference points including the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point, the coordinate values including the first reference coordinate value; since the shooting angles are consistent, the coordinate values of the reference points in the reference image and the coordinate values in the real-time image are the same, and therefore, the positions of the reference points in the real-time image can be calibrated through the first reference coordinate values.

In order to enable the reference points to be clearly displayed in the standard image, the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point may each be provided with a development mark. The developing label may specifically be a fluorescent agent or the like.

Further, the controller is further configured to connect the first upper reference point and the second upper reference point to obtain an upper reference line, connect the first lower reference point and the second lower reference point to obtain a lower reference line, equally divide the upper reference line to obtain an equal division point, equally divide the lower reference line to obtain a lower equal division point, the reference points further include an equal division point and a lower equal division point, and the controller is further configured to obtain a second reference coordinate position of the equal division point and the lower equal division point in the reference image, and then, the controller may mark the equal division point and the lower equal division point in the real-time image according to the second reference coordinate value.

With continued reference to fig. 6, the camera assembly 2 may include a camera head, which is installed between the distributor 5 and the igniter 6, and since the sintering material in this section is not yet ignited, the ambient temperature may be low, and high temperature damage of the camera head can be avoided to a greater extent. Of course, the camera may be installed on the downstream side of the igniter 6, and in this case, the camera should be located as far away from the igniter 6 as possible to reduce the influence of the high temperature on the life of the camera.

The camera assembly 2 may include, in addition to the camera, a mounting frame, a transmission line, and other components, and the specific structural form of these components is not limited herein, and in a specific practice, those skilled in the art may design these components according to actual needs.

The distance between the camera and the top surface of the sinter bed 4 can be controlled to be 0.5m-1m, and the camera can be roughly arranged at the transverse middle position of the sinter bed 4, so that the image shot by the camera can be roughly a symmetrical image, and the thickness calculation is more facilitated.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.