Steelmaking continuous casting camera shooting fixed-length automatic detection device

Abstract

The utility model relates to the technical field of steelmaking equipment, in particular to a steelmaking continuous casting camera shooting and sizing automatic detection device which comprises a primary camera shooting and sizing system, a secondary camera shooting and sizing system and a detected continuous casting billet. The primary camera shooting sizing system and the secondary camera shooting sizing system surround the detected continuous casting billet; the primary camera shooting sizing system is connected with the continuous casting PLC control system through an optical fiber network. The steelmaking continuous casting camera shooting fixed-length automatic detection device is used for secondary verification of the length of a fixed-length steel billet after continuous casting flame cutting, the work that the fixed-length length is manually measured and then secondary correction is conducted is replaced, and the problems that timeliness is poor and the labor intensity of workers is large are solved; and meanwhile, on-line automatic adjustment of sizing is achieved, and the precision of sizing casting blanks is greatly improved.

Description

Technical field:

[0001] The utility model relates to the technical field of steelmaking equipment, in particular to an automatic detection device for steelmaking and continuous casting by videography. Background technology:

[0002] At present, after the ingot is cut to length, manual measurement is required to feedback to the control room to adjust the compensation amount, resulting in a lot of waste of subsequent ingots. The present invention can automatically and real-time measure and verify the ingot of fixed length through a high-definition camera, and compare and compensate with the target data, thereby effectively improving the ingot's length accuracy, solving the problems of high labor intensity and slow feedback of manual secondary measurement, improving the yield rate, and greatly saving the ingot cost. Utility model content:

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and to provide a steelmaking continuous casting camera length automatic detection device, which is used for secondary detection and correction of the length of the fixed-length casting billet after continuous casting flame cutting.

[0004] In order to solve the problems existing in the background technology, the utility model adopts the following technical scheme: it includes a primary camera and sizing system, a secondary camera and sizing system and a continuous casting billet to be inspected, the primary camera and sizing system is connected with the secondary camera and sizing system through an optical fiber network, and the primary camera and sizing system and the secondary camera and sizing system surround the continuous casting billet to be inspected; the primary camera and sizing system is connected with the continuous casting PLC control system through an optical fiber network.

[0005] The one-shot camera-sizing system comprises two cameras for detecting the billet head once, two cameras for detecting the billet tail once, a camera-sizing video collector and a control computer IPC. The two cameras for detecting the billet head once and the two cameras for detecting the billet tail once are connected to the camera-sizing video collector through an optical fiber network, the camera-sizing video collector is connected to the control computer IPC through an optical fiber network, and the control computer IPC is connected to the continuous casting PLC control system through an optical fiber network. One camera for detecting the billet head once and one camera for detecting the billet tail once are respectively arranged on both sides of the detected continuous casting billet, and the cameras for detecting the billet head once and the cameras for detecting the billet tail once on each side are distributed at intervals.

[0006] The secondary camera and sizing system comprises two secondary detection cameras for billet heads, two secondary detection cameras for billet tails, two secondary detection cameras for billet tails, two camera and sizing video collectors, and a control computer IPC. The two secondary detection cameras for billet heads, the two secondary detection cameras for billet tails, and the two secondary detection cameras for billet tails are connected to the camera and sizing video collectors through an optical fiber network, and the camera and sizing video collectors are connected to the control computer IPC through an optical fiber network. A secondary detection camera for billet heads, a second detection camera for billet tails, and a second secondary detection camera for billet tails are arranged on both sides of the detected continuous casting billet, and the secondary detection cameras for billet heads, the second detection cameras for billet tails, and the second secondary detection cameras for billet tails on each side are distributed at intervals.

[0007] The first camera for detecting the tail of the second billet on the same side is 8 to 10 meters away from the camera for detecting the head of the second billet, and the second camera for detecting the tail of the second billet is 10 to 12 meters away from the camera for detecting the head of the second billet.

[0008] The two sides of the inspected continuous casting billet are equipped with a primary billet head inspection camera, a primary billet tail inspection camera, a secondary billet head inspection camera, a secondary billet tail inspection camera 1 and a secondary billet tail inspection camera 2 in sequence from the beginning to the end; the secondary billet head inspection camera is 1 to 3 meters away from the primary billet tail inspection camera.

[0009] The beneficial effects of the utility model are:

[0010] 1) The camera collects images of the billet moving on the conveyor roller from a long distance. When the billet enters the camera recognition area, a deceleration and stop instruction is given; digital image processing technology is used to give the current relative position image of the billet head and billet tail.

[0011] 2) The system processes the relative position images of the billet head and billet tail through corresponding software to obtain the data information of the billet head and billet tail.

[0012] 3) The system's calculation and analysis software calculates the data information of the billet head and billet tail, and calculates the precise length of the billet in real time.

[0013] 4) The precise billet length data obtained by the length measurement system is compared with the given fixed length to calculate the error value. If it exceeds the set error range, it is fed back to the fixed length system and automatically adjusted online.

[0014] 5) The operator can modify various control parameters and adjust the operating status.

[0015] 6) The monitor can display the running status of the steel billet in real time, display relevant parameters, and can count and display the number of billets, length and other information by shift.

[0016] 7) The system contains a database and the data can be stored for more than one year.

[0017] 8) The system can be connected to the secondary data system or the on-site large screen.

[0018] 9) The system adopts remote non-contact measurement to increase service life and reduce maintenance difficulty.

[0019] 10) The length of the ingot is automatically calculated throughout the whole process. Description of the drawings:

[0020] Figure 1 It is a schematic diagram of the structure of the utility model. Specific implementation method:

[0021] Reference Figure 1The utility model specifically adopts the following implementation mode: it includes a primary camera and sizing system 1, a secondary camera and sizing system 2 and a continuous casting billet 5 to be inspected. The primary camera and sizing system 1 is connected to the secondary camera and sizing system 2 through an optical fiber network 4. The primary camera and sizing system 1 and the secondary camera and sizing system 2 surround the continuous casting billet 5 to be inspected; the primary camera and sizing system 1 is connected to the continuous casting PLC control system 3 through the optical fiber network 4. The one-time camera and sizing system 1 comprises two one-time detection cameras 101 for the billet head, two one-time detection cameras 102 for the billet tail, a camera and sizing video collector 103 and a control computer IPC 104. The two one-time detection cameras 101 for the billet head and the two one-time detection cameras 102 for the billet tail are connected to the camera and sizing video collector 103 through an optical fiber network 4. The camera and sizing video collector 103 is connected to the control computer IPC 104 through the optical fiber network 4. The control computer IPC 104 is connected to the continuous casting PLC control system 3 through the optical fiber network 4. One one-time detection camera 101 for the billet head and one one-time detection camera 102 for the billet tail are respectively arranged on both sides of the detected continuous casting billet 5, and the one-time detection camera 101 for the billet head and the one-time detection camera 102 for the billet tail on each side are distributed at intervals. The secondary camera and sizing system 2 comprises two secondary detection billet head cameras 203, two secondary detection billet tail cameras 1 202, two secondary detection billet tail cameras 201, a camera and sizing video collector 2 205 and a control computer IPC 2 204. The two secondary detection billet head cameras 203, the two secondary detection billet tail cameras 1 202 and the two secondary detection billet tail cameras 201 are connected to the camera and sizing video collector 2 205 through an optical fiber network 4, and the camera and sizing video collector 2 205 is connected to the control computer IPC 2 204 through an optical fiber network 4. A secondary detection billet head camera 203, a second detection billet tail camera 1 202 and a secondary detection billet tail camera 2 201 are respectively arranged on both sides of the detected continuous casting billet 5, and the secondary detection billet head camera 203, the second detection billet tail camera 1 202 and the secondary detection billet tail camera 2 201 on each side are distributed at intervals. The second billet tail detection camera 1 202 on the same side is 8 to 10 meters away from the secondary billet head detection camera 203, and the secondary billet tail detection camera 2 201 is 10 to 12 meters away from the secondary billet head detection camera 203. The two sides of the detected continuous casting billet 5 are sequentially provided with a primary billet head detection camera 101, a primary billet tail detection camera 102, a secondary billet head detection camera 203, a secondary billet tail detection camera 1 202 and a secondary billet tail detection camera 2 201 from the beginning to the end; the secondary billet head detection camera 203 is 1 to 3 meters away from the primary billet tail detection camera 102.

[0022] The steelmaking continuous casting camera length automatic detection device includes two camera length systems: the primary camera length system 1 is the original camera group, and the secondary camera length system 2 is newly added. A bracket (pre-buried steel structure or using existing bracket) is erected at the equipment installation site. The secondary detection billet head camera 203 of the secondary camera length system 2 is located 2m behind the first billet tail camera 103 of the primary camera length system 1. The secondary billet tail camera 1 202 of the secondary camera length system 2 is 9m away from the secondary billet head camera 203. The secondary billet tail camera 2 201 of the secondary camera length system 2 is 11m away from the secondary billet head camera 203. The equipment is installed at the upper end of the bracket to ensure that there is no obstruction between the camera and the billet cross section of the detected continuous casting billet 5. The control room needs to reserve space for the continuous casting PLC control system 3 (control cabinet).

[0023] The steelmaking continuous casting camera length automatic detection device is used for the secondary accurate measurement of the actual length of the detected continuous casting billet 5 after cutting, and the measurement data is fed back to the length determination system; through the continuous casting PLC control system 3 and the control computer IPC software comparison calculation, the primary camera length determination length is fine-tuned to realize the length determination closed-loop control, and the secondary length determination measurement features include: two secondary detection billet head cameras 203, two secondary detection billet tail cameras 1 202, two secondary detection billet tail cameras 201, camera length determination video collector 2 205 and control computer IPC 2 204; the billet signal acquisition part is composed of two primary detection billet head cameras 101 installed on both sides of the conveyor roller, two primary detection billet tail cameras 102, two primary detection billet tail cameras 103, two primary detection billet tail cameras 104, two primary detection billet head cameras 105, two primary detection billet tail cameras 106, two primary detection billet head cameras 107, two primary detection billet tail cameras 108, two primary detection billet head cameras 109, two primary detection billet tail cameras 110, two primary detection billet tail cameras 111, two primary detection billet head cameras 112, two primary detection billet tail cameras 113, two primary detection billet tail cameras 114, two primary detection billet tail cameras 115, two primary detection billet head cameras 116, two primary detection billet tail cameras 117, two primary detection billet tail cameras 118, two primary detection billet head cameras 119, two primary detection billet head cameras 1201, two primary detection billet tail cameras 121, two primary detection billet tail cameras 122, two primary detection billet tail cameras 123, two primary detection billet tail cameras 124, two primary detection billet tail cameras 125, two primary detection billet head cameras 126, two primary detection billet tail cameras 127, two primary detection billet tail cameras 128 The camera 102 and the camera-to-length video collector 103 are responsible for collecting the real-time image of the continuous casting billet 5 being inspected on the roller; the real-time image on the conveying roller is collected and input into the camera-to-length video collector 103 in the control room through the image acquisition module and transmitted to the control computer IPC-104, and the edge position information of the billet is obtained through image processing and software analysis; the billet head position information of the inspected continuous casting billet 5 is detected by the billet head camera 101 once, and the image sizing limit is determined according to the set parameters (sizing requirements, roller speed and camera center distance, etc.), and the billet position image information triggers the image sizing limit, and the system sends a cutting signal to let the fire cutting machine cut the billet. After the cutting is completed, the ingot is imaged and measured by two secondary detection ingot head cameras 203, two secondary detection ingot tail cameras one 202 and two secondary detection ingot tail cameras two 201, and the measurement results are fed back to the camera sizing video collector two 205, which is connected to the control computer IPC two 204 of the secondary camera sizing system 2 through communication, and the measured actual length is compared with the target length, and the comparison result is fed back to the control computer IPC one 104 of the primary camera sizing system 1, and the system automatically fine-tunes.

[0024] The specific steps are as follows:

[0025] Step 1) Based on the original one-time detection camera 101 for the head of the continuous casting billet and the one-time detection camera 102 for the tail of the billet, a new high-definition video length measurement system for the casting billet is added; a high-definition camera combination of a secondary detection camera 203 for the head of the billet, a secondary detection camera 1 202 for the tail of the billet and a secondary detection camera 2 201 for the tail of the billet are used to collect the billet head and billet tail information of the inspected continuous casting billet 5.

[0026] Step 2) Calibrate the decimeter ruler for each camera individually, and measure the actual distance between the combined cameras (this value can be modified as a parameter). This value is an important parameter for the software to calculate the length of the ingot.

[0027] Step 3) Analyze the position information of the detected continuous casting billet 5 in real time in the field of view of each camera, obtain the length information of the detected continuous casting billet 5 in a single camera, calculate the length of the billet according to the actual distance between the combined cameras, and then calculate the corrected length of the detected continuous casting billet 5 according to the triangular relationship between the camera imaging and the field of view and the camera correction imaging error function; then use the visual scanning function of the high-definition camera to obtain the average corrected length of the detected continuous casting billet 5, effectively eliminating the error caused by the uneven cutting surface of the billet. When the detected continuous casting billet 5 enters the field of view of the camera, the data calculation and analysis module begins to analyze and calculate, and uses the multiple averaging algorithm to further approximate the actual value of the billet length.

[0028] Step 4) Ethernet communication is used between the length measuring system and the sizing system. The length measuring system calculates the error by comparing the length value of the continuous casting billet 5 under inspection in the current flow with the given sizing, and transmits it to the camera sizing system, which will automatically make fine adjustments based on the error.

[0029] Embodiment 1

[0030] For example, the current set length of a certain flow is 11.2 meters, and the length of the ingot measured by the length measurement system is 11.4 meters. When the set length is not changed, the automatic control length system tracks the line and moves 0.2 meters to control the cutting. When the length error is less than the set error (such as the set error 0≤s≤5mm), the system does not make adjustments.

[0031] In summary, this steelmaking continuous casting camera-based automatic length detection device is used for secondary verification of the length of the fixed-length steel billet after continuous casting flame cutting, replacing the work of manually measuring the fixed-length length and then making secondary corrections, overcoming the problems of poor timeliness and high labor intensity of workers; at the same time, it realizes online automatic adjustment of the fixed-length, and the accuracy of the fixed-length casting billet has been greatly improved. This technical invention verifies each other through two sets of fixed-length devices, measures the actual length of the steel billet after cutting and feeds back the information to the front-end camera-based length system, and the system software performs comparative calculations and fine-tunes the fixed-length length online, effectively controlling the actual length of the casting billet within the target fixed-length accuracy.

Claims

1. An automatic detection device for steelmaking and continuous casting by videography, characterized in that: The invention comprises a primary camera and sizing system (1), a secondary camera and sizing system (2) and a continuous casting billet (5) to be inspected. The primary camera and sizing system (1) is connected to the secondary camera and sizing system (2) via an optical fiber network (4). The primary camera and sizing system (1) and the secondary camera and sizing system (2) surround the continuous casting billet (5) to be inspected. The primary camera and sizing system (1) is connected to a continuous casting PLC control system (3) via an optical fiber network (4).

2. The automatic detection device for steelmaking and continuous casting by videography according to claim 1 is characterized in that: The one-shot camera-sizing system (1) comprises two one-shot billet head detection cameras (101), two one-shot billet tail detection cameras (102), a one-shot camera-sizing video collector (103) and a control computer IPC (104). The two one-shot billet head detection cameras (101) and the two one-shot billet tail detection cameras (102) are connected to the one-shot camera-sizing video collector (103) via an optical fiber network (4). The one-shot camera-sizing video collector (103) is connected to the control computer IPC (104) via the optical fiber network (4). The control computer IPC (104) is connected to a continuous casting PLC control system (3) via the optical fiber network (4). One one-shot billet head detection camera (101) and one one-shot billet tail detection camera (102) are respectively arranged on both sides of the detected continuous casting billet (5). The one-shot billet head detection camera (101) and the one-shot billet tail detection camera (102) on each side are spaced apart.

3. The automatic measuring device for steelmaking and continuous casting by videography according to claim 1, characterized in that: The secondary camera length determination system (2) comprises two secondary detection blank head cameras (203), two secondary detection blank tail cameras (202), two secondary detection blank tail cameras (201), a second camera length determination video collector (205) and a second control computer IPC (204). The two secondary detection blank head cameras (203), the two secondary detection blank tail cameras (202) and the two secondary detection blank tail cameras (201) are connected to the camera length determination video collector via an optical fiber network (4). The second camera (205) is connected to the control computer IPC (204) through the optical fiber network (4); the two sides of the detected continuous casting billet (5) are respectively provided with a secondary detection billet head camera (203), a second detection billet tail camera (202) and a secondary detection billet tail camera (201), and the secondary detection billet head camera (203), the second detection billet tail camera (202) and the secondary detection billet tail camera (201) on each side are distributed at intervals.

4. The automatic measuring device for measuring length of steelmaking and continuous casting by videography according to claim 3 is characterized in that: The second billet tail detection camera 1 (202) on the same side is 8 to 10 meters away from the secondary billet head detection camera (203), and the secondary billet tail detection camera 2 (201) is 10 to 12 meters away from the secondary billet head detection camera (203).

5. The automatic measuring device for measuring length of steelmaking and continuous casting by videography according to claim 1, 2 or 3, characterized in that: The two sides of the inspected continuous casting billet (5) are provided with a primary billet head inspection camera (101), a primary billet tail inspection camera (102), a secondary billet head inspection camera (203), a secondary billet tail inspection camera 1 (202) and a secondary billet tail inspection camera 2 (201) in sequence from the beginning to the end; the secondary billet head inspection camera (203) is 1 to 3 meters away from the primary billet tail inspection camera (102).

Images