An online detection method and online detection system for sintering material layer thickness

Abstract

The present 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, photographing and acquiring a real-time image of a sintering trolley loaded with 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 each of the reference points; step S4, determining the intersection line between the top surface of the sintering material layer and the cross section; step S5, calculating the height value corresponding to the selected point on the intersection line through the geometric model formed by each of the reference points and the intersection line and the reference height value of each of the reference points. The above-mentioned online detection method and online detection system can detect the thickness of the sintering material layer.

Description

Technical Field

[0001] The invention relates to the technical field of sintering detection, and in particular to an online detection method and an online detection system for the thickness of a sintering material layer. Background Art

[0002] The thickness of the material layer is an important parameter in sintering production and one of the important indicators for evaluating sintering operations. With the development of ironmaking technology, the requirements of blast furnaces for sintered ore are constantly increasing, and the adjustment of the thickness of the material layer in sintering operations is becoming more and more important.

[0003] Therefore, how to detect the thickness of the sintered material layer is still a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] The purpose of the present invention is 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.

[0005] In order to solve the above technical problems, the present invention provides an online detection method for the thickness of a sintering material layer, comprising the following steps: step S1, photographing and acquiring a real-time image of a sintering trolley loaded with 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 each of the reference points; step S4, determining the intersection line between the top surface of the sintering material layer and the cross-section; step S5, calculating the height value corresponding to the selected point on the intersection line through 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.

[0006] The cross section of the inner wall of the sintering trolley refers to the cross section of the inner wall of the sintering trolley perpendicular to the running direction of the sintering trolley. The cross section can be determined on the real-time image through the preset reference point, and then the intersection line between the top surface of the sintering material layer and the cross section can be determined. The thickness of the sintering material layer to be measured in the embodiment of the present invention is actually the relative distance between each point on the intersection line and the bottom wall of the inner wall of the sintering trolley. In the geometric model formed by the combination of the cross section and the intersection line, the reference height value of each reference point is known. The height value corresponding to the selected point on the intersection line can be easily determined by the similarity criterion, and then the thickness of the sintering material layer at the selected point can be determined.

[0007] Optionally, before step S2, steps S01 to S05 are also included; step S01, selecting a first upper reference point and a first lower reference point on a first side of a set cross section of an empty sintering trolley, 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 include the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point; step S02, obtaining 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; step S03, obtaining 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; An upper reference point and the second lower reference point are set with development marks; step S04, photographing 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, obtaining the 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 marking of several preset reference points in the real-time image in 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 values.

[0008] Optionally, after step S04, steps S06 to S08 are also included; step S06, connecting the first upper reference point and the second upper reference point to obtain an upper reference line, connecting the first lower reference point and the second lower reference point to obtain a lower reference line; step S07, dividing the upper reference line equally to obtain upper dividing points, dividing the lower reference line equally to obtain lower dividing points, and the reference points also include the upper dividing points and the lower dividing points; step S08, obtaining second reference coordinate values ​​of the upper dividing points and the lower dividing points in the reference image; the marking of the preset plurality of reference points in the real-time image in step S2 also includes: marking the upper dividing points and the lower dividing points in the real-time image by the second reference coordinate values.

[0009] Optionally, the first lower reference point is the intersection of the first side and the bottom of the set cross section, and the second lower reference point is the intersection of the second side and the bottom; and / or, the first upper reference point is the vertex of the first side, and the second upper reference point is the vertex of the second side.

[0010] Optionally, the selected points are points that divide the intersection line into four equal parts.

[0011] The present invention also provides an online detection system for the thickness of a sintering material layer, comprising: a camera assembly, used to capture a real-time image of the sintering trolley loaded with sintering material; a controller, used to mark a plurality of preset reference points in the real-time image, and used to determine the cross-section of the inner wall of the sintering trolley according to each of the reference points, and used to determine the intersection line between the top surface of the sintering material layer and the cross-section, and used to calculate the height value corresponding to the selected point on the intersection line through the geometric model formed by each of the reference points and the intersection line and the reference height value of each of the reference points.

[0012] Optionally, the controller pre-stores coordinate values ​​of each of the reference points, and the controller is used to mark each of the reference points in the real-time image according to the coordinate values.

[0013] Optionally, a first upper reference point and a first lower reference point are provided on the first side of the set cross section of the empty sintering trolley, and a second upper reference point and a second lower reference point are provided on the second side; the camera assembly is also used to capture a reference image containing 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 used to receive the reference image and to obtain the 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 include the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point, and the coordinate values ​​include the first reference coordinate values.

[0014] Optionally, the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point are all provided with development marks.

[0015] Optionally, the controller is also used to connect the first upper reference point and the second upper reference point to obtain an upper reference line, and to connect the first lower reference point and the second lower reference point to obtain a lower reference line. The controller is also used to divide the upper reference line into equal parts to obtain upper dividing points, and to divide the lower reference line into equal parts to obtain lower dividing points. The reference points also include the upper dividing points and the lower dividing points. The controller is also used to obtain second reference coordinate values ​​of the upper dividing points and the lower dividing points in the reference image, and the coordinate values ​​also include the second reference coordinate values.

[0016] Optionally, the camera assembly includes a camera, which is installed between the distributor and the igniter; the distance between the camera and the top surface of the sintering material layer is 0.5m-1m, and the camera is installed in the lateral middle position of the sintering material layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A schematic flow chart of a specific implementation of the online detection method for the thickness of the sintering material layer provided by the present invention;

[0018] Figure 1a A structural diagram of a geometric model formed by various reference points and intersection lines;

[0019] Figure 2 A schematic diagram of the process of obtaining coordinate values;

[0020] Figure 3 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 for an empty sintering trolley;

[0021] Figure 4 A schematic diagram of a first upper reference point, a first lower reference point, a second upper reference point, a second lower reference point and selected points provided for a sintering trolley carrying sintering material;

[0022] Figure 5 for Figure 4 A local enlarged view of the cross-section position set in the figure;

[0023] Figure 6 The figure is a schematic structural diagram of a specific implementation of the online detection system for the thickness of the sintering material layer provided by the present invention.

[0024] Figure 3-Figure 6 The reference numerals in the figures are described as follows:

[0025] 1 sintering trolley, 2 camera assembly, 3 controller, 4 sintering material layer, 5 distributor, 6 igniter. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The term “several” as used herein refers to an indefinite number of multiples, usually more than two; and when “several” is used to indicate the number of certain components, it does not indicate the quantitative relationship between these components.

[0028] The words "first", "second", etc. mentioned in this article are only for the convenience of describing two or more structures, components, parameters, etc. with the same or similar structures and / or functions, and do not imply any special limitation on the order and / or importance.

[0029] Please refer to Figure 1-Figure 6 , Figure 1 The figure is a flow chart of a specific implementation of the online detection method of the sintering material layer thickness provided by the present invention. Figure 1a It is a simplified structural diagram of the geometric model formed by each reference point and the intersection line. Figure 2 The following is a flow chart of obtaining coordinate values: Figure 3 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 for an empty sintering trolley, Figure 4 A schematic diagram of a first upper reference point, a first lower reference point, a second upper reference point, a second lower reference point and each selected point set for a sintering trolley carrying sintering material, Figure 5 for Figure 4 A local enlarged view of the cross-section position set in Figure 6 The figure is a schematic structural diagram of a specific implementation of the online detection system for the thickness of the sintering material layer provided by the present invention. Embodiment 1

[0030] like Figure 1 As shown, an embodiment of the present invention provides an online detection method for the thickness of a sintering material layer, which specifically includes the following steps: step S1, photographing and acquiring a real-time image of a sintering trolley 1 loaded with 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 each reference point; step S4, determining the intersection line between the top surface of the sintering material layer and the cross-section; step S5, calculating the height value corresponding to the selected point on the intersection line through a geometric model formed by each reference point and the intersection line and a reference height value of each reference point.

[0031] 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 perpendicular to the running direction of the sintering trolley 1. The cross section can be determined on the real-time image through the preset reference point, and then the intersection line between the top surface of the sintering material layer 4 and the cross section can be determined. The thickness of the sintering material layer to be measured in the embodiment of the present invention is actually the relative distance between each point on the intersection line and the bottom wall of the inner wall of the sintering trolley 1. In the geometric model formed by the combination of 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 by the similarity criterion, and then the thickness of the sintering material layer 4 at the selected point can be determined.

[0032] In detail, it can be combined with Figure 1a, taking the existence of four reference points A1, A2, B1, and B2 as an example, a cross section can be obtained by connecting these four reference points in sequence, and an intersection line A0B0 is formed between the cross section and the top surface of the sintered material layer 4; then, point C1 can be selected on A1B1, point C2 can be selected on A2B2, and points C1 and C2 can be connected to obtain the intersection point C0 with the intersection line A0B0; in the real-time image, the distances between A1C1 and C1B1 are both determined, and the height value of C1 can be calculated based on 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 distances between C1C0 and C0C2 in the real-time image are also determined, the height value of C0 can be calculated based on the similarity criterion and the height values ​​of C1 and C2, that is, the thickness of the sintered material layer at the position of C0 can be obtained.

[0033] Take the solution that A1B1 and A2B2 are parallel to the bottom wall of the sintering trolley 1 and A2B2 is located on the bottom wall as an example, then the height of C1 is the same as that of A1 and B1, which can be recorded as H0, and the height of C2 is the same as that of A2 and B2, which is 0. F is used to represent the distance between any two points. Then, the thickness of the sintering material layer at the position of C0 can be obtained by calculate.

[0034] Here, the embodiment of the present invention does not limit the number of reference points. In specific practice, technical personnel in this field can make a selection according to actual needs. However, it should be noted that the number of reference points should be at least three so as to be able to determine the above-mentioned cross-section; the reference height value corresponding to each reference point can be obtained by pre-measurement.

[0035] Furthermore, if Figure 2-Figure 5 As shown, before the above step S2, steps S01 to S05 are also included to determine the method of marking the reference point.

[0036] Step S01, selecting a first upper reference point and a first lower reference point on a first side of a set cross section of an 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. 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.

[0037] The empty sintering trolley 1 refers to the sintering trolley 1 that has not been loaded with sintering materials, that is, before the formal sintering operation, the above-mentioned several reference points can be selected. It should be known that there are multiple sintering trolleys 1, and when selecting the reference point, any sintering trolley 1 can be selected, and the set cross section can be any cross section of the sintering trolley 1.

[0038] Step S02, obtaining reference height values ​​of a first upper reference point, a first lower reference point, a second upper reference point, and a second lower reference point, which may be obtained by actual measurement.

[0039] Step S03, setting a development mark at the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point. The development mark can be a mark such as a fluorescent agent that can be displayed in an image.

[0040] Step S04 , capturing 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.

[0041] Step S05 , obtaining 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.

[0042] On the premise that the shooting angle does not change, the coordinate values ​​of each reference point in the reference image are consistent with those in the real-time image. Thus, marking the preset reference points in the real-time image in step S2 can specifically be marking 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 by means of a first reference coordinate value.

[0043] In addition, 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 may be pre-stored, and then the reference image and the real-time image may be overlapped using image overlap technology, or the above-mentioned reference points may be determined and marked in the real-time image.

[0044] 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 during specific implementation, those skilled in the art may determine them according to actual needs.

[0045] Specifically in the embodiment of the present invention, the first lower reference point can be the intersection of the first side and the bottom of the set cross section, the second lower reference point can be the intersection of the second side and the bottom, the first upper reference point can be the vertex of the first side, and the second upper reference point can be the vertex of the second side. In this way, the height values ​​of the first lower reference point and the second lower reference point can be zero, and the height values ​​of the first upper reference point and the second upper reference point can be the height of the internal space of the sintering trolley 1. The height values ​​of each reference point can be easily determined and can be convenient for subsequent calculations.

[0046] In addition to the above-mentioned four first upper reference point, first lower reference point, second upper reference point and second lower reference point, other reference points may also be included.

[0047] In detail, after step S04, steps S06-S08 may also be included; step S06, connecting the first upper reference point and the second upper reference point to obtain an upper reference line, connecting the first lower reference point and the second lower reference point to obtain a lower reference line; step S07, dividing the upper reference line into equal parts to obtain upper dividing points, dividing the lower reference line into equal parts to obtain lower dividing points, and the reference points also include upper dividing points and lower dividing points; step S08, obtaining the second reference coordinate values ​​of the upper dividing points and the lower dividing points in the reference image.

[0048] Thus, the marking of the preset reference points in the real-time image in the aforementioned step S2 may specifically be marking the upper and lower points in the real-time image by the second reference coordinate values. In this way, when constructing the geometric model, the corresponding upper and lower points may be directly connected, and the intersection of the connection line and the intersection line may be used as the selected point, which may make it more convenient to calculate the height corresponding to the selected point.

[0049] Of course, it is also possible to construct a geometric model only through the aforementioned first upper reference point, first lower reference point, second upper reference point and second lower reference point, and then construct an upper reference line and a lower reference line in the real-time image, and mark the upper dividing point and the lower dividing point in the upper reference line and the lower reference line respectively, and then determine the selected point. This is also feasible.

[0050] It is understandable that the selected point does not have to be obtained by connecting the equally divided points of the upper reference line and the lower reference line as described above, and can actually be any point on the intersection line, such as a quarter-divided point, etc. When there are multiple selected points, the thickness values ​​measured at each selected point can be averaged to obtain an average thickness; of course, the thickness of each selected point can also be shown separately to guide the uniformity of the horizontal cloth.

[0051] The method of marking the reference points on the real-time image by using the reference points on the reference image is based on the premise that the shooting angle does not change. Under the condition that the shooting angle is determined, the acquisition of the relative position of the reference points on the reference image actually only needs to be performed once, that is, the above-mentioned steps S01 to S08 can be performed only once.

[0052] Combination Figure 5 , taking the solution that A1B1 and A2B2 are parallel to the bottom wall of the sintering trolley 1 and A2B2 is located at the bottom wall as an example, then the heights of C1, D1, E1 are the same as those of A1 and B1, which are recorded as H0, and the heights of C2, D2, E2 are the same as those of A2 and B2, which are all 0, and F is used to represent the distance between the two points. Then, the thickness of the sintering material layer at the position D0 can be obtained by The thickness of the sintered material layer at position E0 can be calculated by calculate. Embodiment 2

[0053] The present invention further provides an online detection system for the thickness of a sintering material layer. The online detection system corresponds to the online detection method in the first embodiment. Therefore, the limitations on the parameters in the first embodiment are also applicable to the present embodiment.

[0054] In detail, the online detection system may include: a camera assembly 2, used to capture a real-time image of a sintering trolley 1 loaded with sintering material; a controller 3, used to mark a plurality of preset reference points in the real-time image, and used to determine the cross-section of the inner wall of the sintering trolley 1 according to each reference point, and used to determine the intersection line between the top surface of the sintering material layer and the cross-section, and used to calculate the height value corresponding to the selected point on the intersection line through the geometric model formed by each reference point and the intersection line and the reference height value of each reference point.

[0055] With this structure, the controller 3 receives the real-time image taken by the camera assembly 2, and can determine the cross-section by marking the preset reference point in the real-time image, and then determine the intersection line between the cross-section and the top surface of the sintered material layer 4. Then, in the geometric model formed by the combination of the cross-section and the intersection line, the height value corresponding to the selected point on the intersection line can be easily calculated by the similarity criterion, and then the thickness of the sintered material layer 4 at the selected point can be determined.

[0056] Similar to the first embodiment, the controller 3 may mark each reference point in the real-time image based on 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 based on the coordinate value.

[0057] In specific practice, a cross section can be selected from the empty sintering trolley 1 as the set cross section, and the set cross section may include a bottom edge and a first side edge and a second side edge that are opposite, 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 also used 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 used to receive the reference image and to obtain the 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, wherein the reference points include the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point, and the coordinate values ​​include the first reference coordinate values; due to the consistent shooting angles, the coordinate values ​​of each reference point in the reference image and the coordinate values ​​in the real-time image are the same, and therefore, the position of the reference point can be calibrated in the real-time image by the aforementioned first reference coordinate values.

[0058] In order to make each reference point 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 be provided with a developing mark, which may be a fluorescent agent or the like.

[0059] Furthermore, the controller is also used to connect the first upper reference point and the second upper reference point to obtain an upper reference line, and to connect the first lower reference point and the second lower reference point to obtain a lower reference line. The controller is also used to divide the upper reference line into equal parts to obtain upper dividing points, and to divide the lower reference line into equal parts to obtain lower dividing points. The reference points also include upper dividing points and lower dividing points. The controller is also used to obtain second reference coordinate values ​​of the upper dividing points and the lower dividing points in the reference image. Then, the controller can mark the reference points such as the upper dividing points and the lower dividing points in the real-time image according to the second reference coordinate values.

[0060] Please continue to refer to Figure 6 The camera assembly 2 may include a camera, which is installed between the distributor 5 and the igniter 6. Since the sintered material in this section has not yet been ignited, the ambient temperature can be relatively low, which can largely avoid high-temperature damage to the camera. Of course, the camera can also be installed on the downstream side of the igniter 6. In this case, the camera should be kept as far away from the igniter 6 as possible to reduce the impact of high temperature on the life of the camera.

[0061] In addition to the camera, the camera assembly 2 may also include components such as a mounting frame and a transmission line. The specific structural forms of these components are not limited here. In specific practice, those skilled in the art may design them according to actual needs.

[0062] The distance between the camera and the top surface of the sintered material layer 4 can be controlled between 0.5m-1m, and the camera can be installed roughly in the horizontal middle position of the sintered material layer 4, so that the image taken by the camera can be roughly a symmetrical image, which is more conducive to thickness calculation.

[0063] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An online detection method for sintering material layer thickness, characterized in that: The steps include: Step S1, capturing a real-time image of a sintering trolley (1) loaded with sintering materials; 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 each of the reference points; Step S4, determining the intersection line between the top surface of the sintered material layer and the cross section; Step S5, calculating the height value corresponding to the selected point on the intersection line through the geometric model formed by each of the reference points and the intersection line and the reference height value of each of the reference points; Before step S2, steps S01 to S05 are also included; Step S01, selecting a first upper reference point and a first lower reference point on a first side of a set cross section of an 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 include the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point; Step S02, obtaining 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; Step S03, setting a development mark at the first upper reference point, the first lower reference point, the second upper reference point, and the second lower reference point; Step S04, 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, obtaining 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 marking of the preset reference points in the real-time image in 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 using the first reference coordinate value.

2. The online detection method for sintering material layer thickness according to claim 1, characterized in that: After step S04, steps S06 to S08 are also included; 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, dividing the upper reference line equally to obtain upper dividing points, dividing the lower reference line equally to obtain lower dividing points, wherein the reference points also include the upper dividing points and the lower dividing points; Step S08, obtaining second reference coordinate values ​​of the upper and lower points in the reference image; The marking of a plurality of preset reference points in the real-time image in step S2 further includes: marking the upper dividing point and the lower dividing point in the real-time image by using the second reference coordinate value.

3. The online detection method for sintering material layer thickness according to claim 1 is characterized in that: The first lower reference point is an intersection point of the first side and the bottom of the set cross section, and the second lower reference point is an intersection point of the second side and the bottom; and / or, The first upper reference point is the vertex of the first side, and the second upper reference point is the vertex of the second side.

4. The online detection method for the thickness of the sintering material layer according to any one of claims 1 to 3, characterized in that: The selected points are the quartering points of the intersection line.

5. An online detection system for sintering material layer thickness, characterized in that: include: A camera assembly (2) for capturing a real-time image of the sintering trolley (1) loaded with sintering material; A controller (3) for marking a plurality of preset reference points in the real-time image, and for determining the cross section of the inner wall of the sintering trolley (1) according to each of the reference points, and for determining the intersection line between the top surface of the sintering material layer (4) and the cross section, and for calculating the height value corresponding to the selected point on the intersection line through 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 controller (3) pre-stores coordinate values ​​of each of the reference points, and the controller (3) is used to mark each of the reference points in the real-time image according to the coordinate values; The first side of the set cross section of the empty sintering trolley (1) is provided with a first upper reference point and a first lower reference point, and the second side is provided with a second upper reference point and a second lower reference point; The camera assembly (2) is also used 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. The controller (3) is used to receive the reference image and to obtain 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 include the first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point, and the coordinate values ​​include the first reference coordinate values.

6. The online detection system for sintering material layer thickness according to claim 5, characterized in that: The first upper reference point, the first lower reference point, the second upper reference point and the second lower reference point are all provided with development marks.

7. The online detection system for sintering material layer thickness according to claim 5, characterized in that: The controller is also used to connect the first upper reference point and the second upper reference point to obtain an upper reference line, and to connect the first lower reference point and the second lower reference point to obtain a lower reference line. The controller is also used to divide the upper reference line into equal parts to obtain upper dividing points, and to divide the lower reference line into equal parts to obtain lower dividing points. The reference points also include the upper dividing points and the lower dividing points. The controller is also used to obtain second reference coordinate values ​​of the upper dividing points and the lower dividing points in the reference image, and the coordinate values ​​also include the second reference coordinate values.

8. The online detection system for sintering material layer thickness according to any one of claims 5 to 7, characterized in that: The camera assembly (2) comprises a camera, and the camera is installed between the distributor (5) and the igniter (6); The distance between the camera and the top surface of the sintered material layer (4) is 0.5m-1m, and the camera is installed in the lateral middle position of the sintered material layer (4).

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