CN102101163B - Cross section integrated laser vision fixed weight cutting method for continuously cast bloom and weight fixing device - Google Patents

Abstract

The invention discloses a cross-sectional integral type continuous casting slab laser vision fixed-weight cutting method and a fixed-weight device. Using a laser, a camera, and a computer equipped with image processing and weight-fixed software, the visual imaging system and the cutting system are synchronized. Realize the real-time integration of the cross-sectional area of the continuous casting slab in the direction of the conveying speed of the continuous casting slab, so as to realize the real-time high-precision calculation of the cross-sectional area of the continuous casting slab, upgrade the existing fixed-length cutting system technology to a fixed-weight cutting system, The weighing accuracy of the continuous casting slab is greatly improved, and the scrap rate of subsequent steel products is reduced, thereby improving production efficiency and economic benefits. The weighing device is simple in composition and accurate in calculation. The invention is suitable for iron and steel smelting process, and realizes constant-weight cutting of continuous casting slabs.

Description

Cross-section integrated continuous casting slab laser vision fixed weight cutting method and weighing device

technical field

The invention belongs to the field of metallurgy, and relates to a measurement method in the production process of steelmaking and continuous casting, in particular to a cross-sectional integral type continuous casting slab laser vision fixed-weight cutting method and a fixed-weight device. the

Background technique

The continuous casting slab should be cut to fixed weight before entering the next rolling process, but because the fixed weight problem has not been well solved, most domestic iron and steel enterprises currently use the fixed-to-length cutting system. Restricted by factors such as mold wear, molten steel alloy composition and casting speed changes in the continuous casting process, the weight of the same length of slab cast in the same flow and at different time periods is not the same, and the difference is large, that is, the casting slab The cross-sectional area of is constantly changing. This difference will directly affect the yield of the product. Currently, the yield of cutting to length is about 96%. the

In recent years, great progress has been made at home and abroad on the issue of fixed weight of continuous casting slabs based on the fixed length theory. Representative results have two aspects:

①Ningbo Zhonghe Weighing Apparatus Co., Ltd. and Shijiazhuang Baosteel Technology Co., Ltd. proposed a technology plan for online sizing and weight cutting of continuous casting slabs. This scheme takes advantage of the fact that there is less difference in the density and cross-sectional area of the continuous casting slabs between the front and back sections, and adds a weighing system on the basis of the cut-to-length system. When the previous section is cut off, weigh it immediately, then calculate the product of density and cross-sectional area according to the cut length, use this product to calculate the length to be cut for the next section, and so on. This technology improves the accuracy of fixed weight to a certain extent, but it needs to add a weighing system on the basis of the existing fixed-length cutting system. It cannot be realized at all under certain circumstances; moreover, because it is not a fixed-weight cutting in the true sense, the effect is not very obvious. the

②Some universities and research institutes at home and abroad have tried to apply laser vision technology to the fixed-weight cutting system of continuous casting slabs, but because they essentially use visual technology to improve the accuracy of length measurement, they have not been involved in the essential problem of fixed-weight (that is, how to improve the accuracy of measuring the cross-sectional area of the continuous casting slab), so its effect is also not obvious. the

The Chinese utility model patent specification with the patent number 031643373 discloses a "volume method continuous casting slab constant weight shearing device", which uses a camera and a laser-assisted thickness measuring device to measure the cross-sectional area only once in a fixed length section. The length to be cut is calculated from the volume and the measured cross-sectional area, and finally the length to be cut is determined by a camera or a non-contact displacement sensor. Therefore, this patented device assumes that the cross-sectional area of the continuous casting slab is constant in a certain long section, and there will also be errors in measuring the length, so its theoretical accuracy is still unthinkable and has great limitations. the

Contents of the invention

The technical problem to be solved by the present invention is to provide a cross-sectional integrated continuous casting slab laser vision fixed-weight cutting method. Through the synchronization technology of the visual imaging system and the cutting system, the cross-sectional contour area of the continuous casting slab can be transferred to the continuous casting slab. The real-time integration in the speed direction realizes the real-time high-precision calculation of the cross-sectional area of the continuous casting slab, upgrades the existing fixed-length cutting system technology to the fixed-weight cutting system, greatly improves the fixed-weight accuracy of the continuous casting slab, and reduces subsequent steel products The scrap rate, thereby improving production efficiency and economic benefits. the

Another object of the present invention is to provide a cross-sectional integral continuous casting slab laser visual weighing device, which is used as the carrier of the above-mentioned cross-sectional integral continuous casting slab laser visual weight weighing cutting method, which is simple in composition, accurate in calculation, and can be Realize the simultaneous visual imaging and cutting of the continuous casting slab. the

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A cross-sectional integrated continuous casting slab laser vision fixed-weight cutting method, which is carried out according to the following steps:

②Laser irradiation and CCD camera imaging

Use a linear laser to irradiate the laser on the cross-section of the continuous casting slab corresponding to the installation position of the cutting knife to form a light strip located in the same vertical plane A, and the vertical plane A is perpendicular to the axis of the continuous casting slab;

The rear part of the light strip is photographed by a CCD camera to form a full image of the light strip; the light strip curve fitting is carried out to obtain the cross-sectional image of the position of the light strip on the continuous casting slab,

②Calculation: Calculate the area of the cross-section of the position of the light strip on the continuous casting slab according to the image of the cross-section of the position of the light strip on the continuous casting slab; by analogy, measure the area of the imaging cross-section of each continuous casting slab after the cutting position S _it , and integrate it in the direction of the traveling speed of the continuous casting slab to determine the weight of the constant weight cutting;

③Cutting: Cutting is carried out when the required weight is reached. the

The above is the basic composition of the method of the present invention, which can realize the real-time integral of the cross-sectional profile area of the continuous casting billet in the direction of the conveying speed of the continuous casting billet, greatly improve the weighing accuracy of the continuous casting billet, reduce the reject rate of subsequent steel products, and thereby improve Production efficiency and economic benefits, according to preliminary calculations, for continuous casting slabs such as automobile steels that require a high sizing ratio, this method can increase the yield of steel slabs by about 1%, and save 50 yuan per ton of steel. Taking Shijiazhuang Steel Plant as an example with an annual output of 2 million tons of automobile steel, it can save 100 million yuan per year. the

As a limitation of the present invention, said step 1. is carried out according to the following sequence of steps:

(1) Installation and adjustment of linear laser

Installation: On the left and right sides of the cross-section of the continuous casting slab corresponding to the installation position of the cutting knife, install a linear laser facing the continuous casting slab, namely the left line laser and the right line laser; 

Adjustment: Adjust the left line laser and the right line laser before the fixed weight, so that the light beams of the left line laser on the upper surface and the left side of the continuous casting slab are light strips, which are light strip I and light strip I respectively. Light bar II; after adjustment, the light beams illuminated by the right line laser on the upper surface and the right side of the continuous casting slab are light bar shapes, respectively light bar III and light bar IV; light bars I~IV are located on the same vertical plane In A, the light bar I and the light bar III overlap after adjustment;

(3) Installation and adjustment of CCD camera

Installation: At the rear of the vertical plane A where the light strips I~IV are located (that is, at the corresponding position opposite to the direction in which the continuous casting slab travels), a CCD camera is installed on the left and right sides of the continuous casting slab, that is, the left CCD The camera, the right CCD camera, the left CCD camera and the right CCD camera are located on the inclined plane B forming an acute angle with the plane A, and the lenses of the left CCD camera and the right CCD camera are facing the continuous casting slab;

Adjustment: Adjust the left CCD camera and the right CCD camera before fixing the weight, so that the left CCD camera can form the full image of light bar I and light bar II, and the right CCD camera can form the full image of light bar III and light bar IV image, and calibrate the relative positional relationship between the left CCD camera and the right CCD camera;

(3) Shooting and imaging: When the continuous casting slab passes the cutting position at a certain speed v, the left CCD camera and the right CCD camera simultaneously shoot the light strip image, and the captured image will be transferred to the corresponding image by the USB port through the data cable. The digital signal is transmitted to the computer, and the light strip curve fitting is performed by the computer through the image processing and constant weight system, and the image of the cross section of the light strip position on the continuous casting slab is obtained. the

The above are the specific steps of the laser irradiation and CCD camera imaging process, which can realize real-time high-precision calculation of the cross-sectional area of the continuous casting slab. Since the pixel-level resolution of the CCD camera is at the micron level, the measured cross-sectional area of the continuous casting slab The accuracy is unmatched by other previous methods. the

As another limitation of the present invention, the step ② is carried out in the following order:

According to the image of the cross-section of the position of the light strip on the continuous casting slab, the computer is used to calculate the area of the cross-section of the position of the light strip on the continuous casting slab through the image processing and weighing system; The area S _it of the imaging cross-section of the continuous casting slab;

，式中ρ为连铸坯密度，v为连铸坯传送速度；s_it为某时刻连铸坯横截面面积；Δt为摄像机相邻两次拍照间隔时间。  The cross-sectional area S _it calculated above is integrated in the direction of the continuous casting slab’s traveling speed by the image processing and constant weight system to determine the weight of the constant weight cutting: since the area change of the continuous casting slab’s cross section has no definite relationship with time t , assuming that the area of the cross-section of the continuous casting slab does not change within the time interval Δt between the two images taken by the CCD camera, then the constant weight w is

, where ρ is the density of the continuous casting slab, v is the conveying speed of the continuous casting slab; s _it is the cross-sectional area of the continuous casting slab at a certain moment; Δt is the interval between two adjacent pictures taken by the camera.

The above is the specific process of the calculation steps. This calculation process can realize the real-time integration of the cross-sectional contour area of the continuous casting billet in the direction of the conveying speed of the continuous casting billet. Since the calculation accuracy of each imaging cross-sectional area is already very high, the area integral is a It is a purely mathematical problem, so the final weighing accuracy is unmatched by other methods in the past. By using the method, the technology of the existing cutting-to-length system can be upgraded to a cutting-to-weight system, and the weight-setting precision of the continuous casting slab can be improved by at least one percentage point. the

The present invention also has a limitation, the step ③ is realized in this way: by comparing the continuous casting slab weight integrated by the image processing and constant weight system at a certain moment with the fixed weight required by the process parameters, when the integrated continuous casting weight When the weight of the slab reaches the fixed weight w required by the process parameters, the computer equipped with the control system will notify the cutting device with a digital pulse signal through serial communication to implement cutting. the

This is the specific operation of cutting, which can realize the synchronization of cutting and fixed weight, and improve the sensitivity and cutting accuracy of the cutting system. the

The present invention also provides a cross-sectional integral continuous casting slab laser vision weighing device for implementing the above method of the present invention, the device includes a left linear laser and a right linear laser, a left CCD camera and a right CCD camera and a computer ,in:

The left linear laser and the right linear laser are located at the position where the cutting knife is installed corresponding to the cross-section of the continuous casting slab, distributed on the left and right sides of the continuous casting slab, and are used to irradiate the continuous casting slab 3 with laser light to form Light bars I~IV located in the same vertical plane A;

The left CCD camera and the right CCD camera are located above the back of the linear laser and above the left and right sides of the continuous casting slab. They form an acute angle with the vertical plane where the cutting knife is located and are located behind the light bar. They are used for Shoot light strips I~IV to form a hologram, and the signal output end is connected to the USB port of the computer through a data cable;

Computer - equipped with an image processing and weighing system, the computer is connected with the CCD camera through the USB port with a data cable, and is used to fit the light strip curve to the light strip I ~ IV hologram to obtain the continuous casting slab The cross-sectional images of the positions of the glazing bars I~IV can be displayed on the computer screen; at the same time, the system automatically calculates the cross-sectional area, and integrates the area in the direction of the continuous casting slab’s traveling speed to obtain the current The integrated continuous casting slab weight, and then compare the integrated continuous casting slab weight with the process fixed weight parameters. When the required fixed weight cutting weight is reached, the computer sends a digital pulse signal to the cutting system through the serial port to notify the cutting system to implement cutting. the

The above is the basic composition of the weighing device of the present invention. Using the cross-sectional integral type continuous casting slab laser vision weighting cutting method to carry out constant weight measurement on the continuous casting slab, the cross-sectional profile area of the continuous casting slab can be measured in the direction of the continuous casting slab conveying speed. Real-time integration is carried out on the system, which greatly improves the weighing accuracy of continuous casting slabs, reduces the scrap rate of subsequent steel products, and thus improves production efficiency and economic benefits. The device has the advantages of simple structure, convenient operation and accurate calculation. the

Due to the adoption of the above-mentioned technical scheme, compared with the prior art, the technical progress of the present invention is that the method and device of the present invention can realize the real-time measurement of the cross-sectional profile area of the continuous casting slab in the direction of the continuous casting slab conveying speed. Integral, finally realize fixed weight cutting, greatly improve the fixed weight accuracy of continuous casting slabs, reduce the scrap rate of subsequent steel products, improve the yield of finished products, thereby improving production efficiency and economic benefits. the

The invention is applicable to the iron and steel smelting process, and realizes constant-weight cutting of continuous casting slabs. the

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. the

Description of drawings

Fig. 1 is a schematic layout diagram of some components in the cross-sectional integral continuous casting slab laser vision weighing device of the present invention;

Figure 2 and Figure 3 are the morphological diagrams of light strip imaging;

Fig. 4 is a schematic diagram of the process of fitting the cross-sectional profile of the continuous casting slab;

Fig. 5 is a schematic diagram of the shooting interval process and area integration process of the cross-section of the continuous casting slab;

Fig. 6 is a flow chart of the image processing and weighing system installed in the computer in the embodiment of the present invention. the

In the figure: 11-left linear laser, 12-right linear laser, 21-left CCD camera, 22-right CCD camera, 3-continuous casting billet, 4-data cable, 5-computer, I～IV- light bar. the

Detailed ways

Example

A cross-sectional integrated continuous casting slab laser vision fixed-weight cutting method, which is carried out according to the following steps:

①Laser irradiation and CCD camera imaging

Use a linear laser to irradiate the laser on the cross-section of the continuous casting slab corresponding to the installation position of the cutting knife to form a light strip located in the same vertical plane A, and the vertical plane A is perpendicular to the axis of the continuous casting slab;

The rear part of the light strip is taken by a CCD camera to form a hologram of the light strip; the light strip curve fitting is performed to obtain the cross-sectional image of the position of the light strip on the continuous casting slab. the

Laser irradiation and CCD camera imaging are carried out in the following steps:

(1) Installation and adjustment of linear laser

Installation: On the left and right sides of the continuous casting slab 3 corresponding to the cutting knife installation position, install a linear laser facing the continuous casting slab 3 respectively, that is, the left line laser 11 and the right line laser 12;

Adjustment: Adjust the left line laser 11 and the right line laser 12 before weight determination, so that the light beams illuminated by the left line laser 11 on the upper surface and the left side of the continuous casting slab 3 are light strips, respectively Light bar I and light bar II; after adjustment, the light beams illuminated by the right side line laser 12 on the upper surface and the right side of the continuous casting slab 3 are in the shape of light bars, which are respectively light bar III and light bar IV; light bar I～ IV is located in the same vertical plane A and the plane A is perpendicular to the 3-axis of the continuous casting slab, after adjustment, the light bar I coincides with the light bar III;

(4) Installation and adjustment of CCD camera

Installation: At the rear of the vertical plane A where light strips I~IV are located (that is, corresponding to the opposite direction of the continuous casting billet 3), a CCD camera is installed on the left and right sides of the continuous casting billet 3, that is, the left Side CCD camera 21, right side CCD camera 22, left side CCD camera 21, right side CCD camera 22 are located on the inclined plane B that is an acute angle with plane A, the camera lens of left side CCD camera 21, right side CCD camera 22 is directed toward Slab 3;

Adjustment: Adjust the left side CCD camera 21 and the right side CCD camera 22 before the fixed weight, so that the left side CCD camera 21 can form the hologram of light bar I and light bar II, and the right side CCD camera 22 can form light bar III and light bar II. The hologram of strip IV, and the relative positional relationship between the left side CCD camera 21 and the right side CCD camera 22 (because the left side and the right side camera respectively become the hologram of the light strip on the upper surface of the front side and the upper surface of the rear side, this When the two parts of the image are fitted into the corresponding cross-sectional profile image, the relative positional relationship parameters between the two cameras need to be known in the developed image fitting system algorithm). the

(3) Shooting and imaging: when the continuous casting slab 3 passes through the cutting position with a certain advancing speed v, the left side CCD camera 21 and the right side CCD camera 22 take pictures of light strip images at the same time, and the pictures taken are transmitted by the USB port through the data cable. The corresponding digital signal is transmitted to the computer, and the light bar curve fitting is carried out by the image processing and weighing system to obtain the images of the cross-sections of the continuous casting slab 3 relative to the positions of the light bars I-IV. the

②Calculation: Calculate the area of the cross-section of the light strip on the continuous casting slab according to the image of the cross-section of the position of the light strip on the continuous casting slab; The area S _it of the cross section is integrated in the direction of the continuous casting slab's traveling speed to determine the weight of the fixed weight cut.

Specifically, the calculation steps are implemented as follows:

According to the image of the cross-section of the position of the light strip on the continuous casting slab, the area of the cross-section of the position of the light strip on the continuous casting slab is calculated by the image processing and weighing system; by analogy, each imaged continuous casting that passes through the cutting position is measured The area S _it of the imaging cross-section of the billet;

，式中ρ为连铸坯密度；v为连铸坯传送速度；s_it为某时刻连铸坯横截面面积；Δt为摄像机相邻两次拍照间隔时间  The computer uses image processing and constant weight system to integrate the cross-sectional area S _it calculated above in the direction of the continuous casting slab’s traveling speed to determine the weight of the constant weight cutting: since the area change of the continuous casting slab cross-section and time t are not determined relationship, assuming that the area of the cross-section of the continuous casting slab does not change within the time interval Δt between two images taken by the CCD camera, then the constant weight w is

, where ρ is the density of the continuous casting slab; v is the conveying speed of the continuous casting slab; s _it is the cross-sectional area of the continuous casting slab at a certain moment;

③Cutting: Cutting is carried out when the required weight is reached. the

The cutting process is realized in this way: compare the integrated continuous casting slab weight with the fixed weight parameter of the process, when the computer judges that the weight of the continuous casting slab reaches the required fixed weight cutting weight w by using the fixed weight function of the installed system , the computer sends a digital pulse signal to the cutting system through the serial port to notify the cutting system to implement cutting. the

This embodiment also provides a cross-sectional integral type continuous casting slab laser vision weighing device, which includes a left linear laser 11 and a right linear laser 12, a left CCD camera 21 and a right CCD camera 22, and also includes A computer equipped with an image processing and weighing system, and the computer and the CCD camera are connected with a data cable;

The left linear laser 11 and the right linear laser 12 are located at the cutting knife installation position corresponding to the cross-section of the continuous casting slab, distributed on the left and right sides of the continuous casting slab 3, and are used to irradiate the continuous casting slab 3 with laser light , to form light bars I~IV located in the same vertical plane A;

The left CCD camera 21 and the right CCD camera 22 are located above the rear of the linear laser, respectively above the left and right sides of the continuous casting billet 3, which form an acute angle with the vertical plane where the cutting knife is located and are located behind the light bar , used to shoot light strips I~IV to form a hologram, and its signal output end is connected to the USB port of the computer through a data cable; 

The computer is equipped with an image processing and weighing system, which is used to fit the light strip curve to the full image of the light strips I~IV, and obtain the cross-sectional images of the positions of the light strips I~IV on the continuous casting slab, and display them on the computer screen. at the same time, the software automatically calculates the cross-sectional area, and integrates the area in the direction of the continuous casting slab's traveling speed to obtain the current integral to

Then compare the integrated continuous casting slab weight with the fixed weight parameters of the process. When the required fixed weight cutting weight is reached, the computer sends a digital pulse signal to the cutting system through the serial port to notify the cutting system to implement cutting. the

The computer in this embodiment is a notebook computer. the

The image processing and weighing system mentioned in this implementation is used to realize the setting of system parameters, the calibration of CCD camera, the collection of light strip images of the cross-section of continuous casting slabs, the processing and fitting of light strip images, and the fitting Calculation of cross-sectional area, integral calculation of cross-sectional area in the conveying direction of continuous casting slab and communication with cutting system, etc. The system mainly includes a system parameter setting module, a CCD camera calibration module, an image acquisition module, an image processing module, a cross-sectional area calculation module, a cross-sectional area integral module, and a communication module between the weighing system and the cutting system. The image processing and weight-fixing functions of the system are realized by software executing corresponding programs, and the program flow chart of the software is shown in FIG. 6 . the

Claims (5)

1. A cross-sectional integral type continuous casting slab laser vision fixed weight cutting method is characterized in that it is carried out according to the following steps: ①Laser irradiation and CCD camera imaging Using a linear laser to irradiate the laser on the cross-section of the continuous casting slab corresponding to the installation position of the cutting knife to form a light strip located in the same vertical plane A, the vertical plane A is perpendicular to the axis of the continuous casting slab; The rear part of the light strip is photographed by a CCD camera to form a full image of the light strip; the light strip curve fitting is carried out to obtain the cross-sectional image of the position of the light strip on the continuous casting slab, ②Calculation: Calculate the area of the cross-section of the position of the light strip on the continuous casting slab according to the image of the cross-section of the position of the light strip on the continuous casting slab; by analogy, measure the area of the imaging cross-section of each continuous casting slab after the cutting position S _it , and integrate it in the direction of the traveling speed of the continuous casting slab to determine the weight of the constant weight cutting; ③Cutting: Cutting is carried out when the required weight is reached. 2. The cross-sectional integral type continuous casting slab laser vision fixed-weight cutting method according to claim 1, characterized in that said step ① is carried out in accordance with the following steps: (1) Installation and adjustment of linear laser Installation: On the left and right sides of the cross-section of the continuous casting slab corresponding to the installation position of the cutting knife, install a linear laser facing the continuous casting slab, that is, the left line laser and the right line laser; Adjustment: Adjust the left line laser and the right line laser before the fixed weight, so that the light beams of the left line laser on the upper surface and the left side of the continuous casting slab are light strips, which are light strip I and light strip I respectively. Light bar II; after adjustment, the light beams illuminated by the right line laser on the upper surface and the right side of the continuous casting slab are light bar shapes, respectively light bar III and light bar IV; light bars I~IV are located on the same vertical plane In A, the light bar I and the light bar III overlap after adjustment; (2) Installation and adjustment of CCD camera Installation: At the rear part of the vertical plane A where the light bars I~IV are located, that is, in the opposite direction to the direction of the continuous casting slab, a CCD camera is installed on the left and right sides of the continuous casting slab, that is, the left CCD camera, The right CCD camera, the left CCD camera and the right CCD camera are located on the inclined plane B forming an acute angle with the plane A, and the lenses of the left CCD camera and the right CCD camera face the continuous casting slab; Adjustment: Adjust the left CCD camera and the right CCD camera before fixing the weight, so that the left CCD camera can form the full image of light bar I and light bar II, and the right CCD camera can form the full image of light bar III and light bar IV image, and calibrate the relative positional relationship between the left CCD camera and the right CCD camera; (3) Shooting and imaging: When the continuous casting slab passes the cutting position at a certain speed v, the left CCD camera and the right CCD camera simultaneously shoot the light strip image, and the captured image will be transferred to the corresponding image by the USB port through the data cable. The digital signal is transmitted to the computer, and the light strip curve fitting is performed by the computer through the image processing and constant weight system, and the image of the cross section of the light strip position on the continuous casting slab is obtained. 3. The cross-sectional integral type continuous casting slab laser vision fixed-weight cutting method according to claim 1, characterized in that the step ② is carried out in the following order: According to the image of the cross-section of the position of the light strip on the continuous casting slab, the computer is used to calculate the area of the cross-section of the position of the light strip on the continuous casting slab by the image processing and weighing system; The area S _it of the imaging cross-section of the continuous casting slab; The cross-sectional area S _it calculated above is integrated in the direction of the continuous casting slab’s traveling speed by the image processing and constant weight system to determine the weight of the constant weight cutting: since the area change of the continuous casting slab’s cross section has no definite relationship with time t , assuming that the area of the cross-section of the continuous casting slab does not change within the time interval Δt between the two images taken by the CCD camera, then the constant weight w is , where ρ is the density of the continuous casting slab, v is the conveying speed of the continuous casting slab; s _it is the cross-sectional area of the continuous casting slab at a certain moment; Δt is the interval between two adjacent pictures taken by the camera. 4. The cross-sectional integral type continuous casting slab laser vision fixed-weight cutting method according to claim 1, characterized in that said step ③ is realized in this way: by integrating the image processing and fixed-weight system at a certain moment The weight of the continuous casting slab is compared with the fixed weight required by the process parameters. When the integrated weight of the continuous casting slab reaches the fixed weight w required by the process parameters, the computer equipped with the control system will notify the cutting device with a digital pulse signal through the serial port communication. cutting. 5. A cross-sectional integrated continuous casting slab laser vision weighing device, characterized in that: the device includes a left linear laser and a right linear laser, a left CCD camera and a right CCD camera and a computer, wherein: The linear laser on the left and the linear laser on the right are located at the cross-section of the continuous casting slab corresponding to the installation position of the cutting knife, distributed on the left and right sides of the continuous casting slab, and are used to irradiate the continuous casting slab with laser to form a Light bars I~IV in the same vertical plane A; The left CCD camera and the right CCD camera are located above the back of the linear laser and above the left and right sides of the continuous casting slab. They form an acute angle with the vertical plane where the cutting knife is located and are located behind the light bar. They are used for Shoot light strips I~IV to form a hologram, and the signal output end is connected to the USB port of the computer through a data cable; Computer - equipped with an image processing and weighing system, the computer is connected to the CCD camera through the USB port with a data cable, and is used to fit the light strip curve to the light strip I~IV hologram to obtain the continuous casting slab. The cross-sectional images of the positions of the light bars I~IV can be displayed on the computer screen; at the same time, the system automatically calculates the cross-sectional area, and integrates the area in the direction of the continuous casting slab’s traveling speed to obtain the current integral Then compare the integrated continuous casting billet weight with the fixed weight parameters of the process. When the weight required by the fixed weight cutting is reached, the computer sends a digital pulse signal to the cutting system through the serial port to notify the cutting system to implement cutting. .

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