CN118237409B - Scale removal speed regulation method, electronic equipment, computer readable medium and speed regulation system - Google Patents
Scale removal speed regulation method, electronic equipment, computer readable medium and speed regulation system Download PDFInfo
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- CN118237409B CN118237409B CN202410668358.5A CN202410668358A CN118237409B CN 118237409 B CN118237409 B CN 118237409B CN 202410668358 A CN202410668358 A CN 202410668358A CN 118237409 B CN118237409 B CN 118237409B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/06—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing of strip material
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/255—Detecting or recognising potential candidate objects based on visual cues, e.g. shapes
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Abstract
The application discloses a descaling speed regulation method, which is characterized in that an actual gray value of a production line is obtained in a dynamic period based on the speed of the production line, the actual gray value is compared with a reference gray value in a database to obtain gray value deviation, the speed deviation is obtained according to a certain proportion coefficient, the speed of the production line is increased or decreased, the actual generated gray value is finally kept within a certain range of the reference gray value, meanwhile, the actual speed of the production line can be compared with a standard speed under the same gray in the database, the actual running state of the production line can be judged, and an early warning prompt can be sent according to the actual situation. The application realizes the automatic adjustment of the production line speed, reduces manual intervention, and the production line can automatically optimize the production speed according to the surface quality of the strip steel, ensures the optimal production rate on the premise of ensuring the product quality, improves the production efficiency and reduces the production cost. The application also provides an electronic device, a computer readable medium and a speed regulating system.
Description
Technical Field
The application relates to the technical field of strip steel production control, in particular to a descaling speed regulating method, electronic equipment, a computer readable medium and a speed regulating system.
Background
Before the hot rolled steel plate is subjected to the next process treatment, the application fields of cold rolling, galvanization and the like all need to be subjected to descaling for the surface of the steel plate so as to remove the oxidized iron scales on the surface. The traditional metal surface rust removal mainly adopts acid washing and shot blasting, but the technology has waste acid, waste water, noise and dust pollution, endangers the physical and mental health of staff and has a plurality of defects.
The existing steel strip surface descaling generally adopts a pure physical metal surface descaling technology (EPS), adopts a mode of mixing angle steel grit with special additive processing industry water, and realizes the physical descaling effect by spraying the grit-water mixed working solution onto the steel strip surface at a high speed through the high-speed rotation of a turbine motor. In the EPS treatment production line for the surface of the steel coil, the descaling quality and the treatment line speed of the iron scale are two key indexes affecting the production cost of the production line, and directly affect the production efficiency of the whole production line.
In the related art, the production of strip steel surface descaling generally adopts a mode of presetting the production line speed to realize the surface treatment of the steel in the whole process. Once the production line fails or has an emergency (such as poor surface quality) in production, the production line needs to be artificially slowed down according to information feedback, and the production line can continue to operate in the feedback and artificial participation process, and the produced product can not meet the quality requirement at the moment and needs to be reworked. After the related problems are solved, the manual acceleration is performed, so that the problems that the quality of the finished product is uneven and the production efficiency is influenced due to the fact that the personnel find out untimely often easily because the manual intervention is more in the whole production process can be seen.
Disclosure of Invention
The present application aims to solve one of the technical problems in the related art to a certain extent. Therefore, the application provides a descaling speed regulating method, electronic equipment, a computer readable medium and a speed regulating system, and the production efficiency is improved on the premise of ensuring the descaling quality.
In order to achieve the above purpose, the application adopts the following technical scheme: a production method for descaling and speed regulation of the surface of strip steel is used for a controller and comprises the following steps of;
Periodically sending a scanning control signal to a scanning module to enable the scanning module to periodically scan and detect the surface of the strip steel on the production line, wherein a period value is determined according to the current actual running speed of the production line;
Receiving a scanning detection result of the scanning module, and obtaining an actual gray value of the surface of the strip steel;
subtracting a reference gray value from the obtained actual gray value to obtain a gray value deviation, wherein the reference gray value is the gray value of an image corresponding to the descaling degree of the surface of the strip steel reaching a preset standard;
Under the condition that the absolute value of the gray value deviation is larger than the minimum gray value deviation and the gray value deviation is a positive value, the production line is regulated to rise;
When the absolute value of the gray value deviation is larger than the minimum gray value deviation and the gray value deviation is negative, the speed of the production line is reduced and adjusted;
Periodically comparing the speed of the production line when the scanning module scans the surface of the strip steel with the corresponding linear speed of the actual gray value in the database and calculating the deviation amplitude;
and under the condition that the deviation amplitude is smaller than the preset deviation amplitude, sending an early warning instruction to an early warning module.
The invention can realize automatic adjustment of the speed of the production line, reduce manual intervention, the production line can automatically optimize the production speed according to the surface quality of the strip steel, the optimal production rate is realized on the premise of ensuring the product quality, the production efficiency is improved, the production cost is reduced, in the speed optimization process, the frequency of scanning the surface of the strip steel can be adjusted according to the actual speed of the production line, the problem of efficiency reduction or possibility of missed detection caused by the discrepancy between the scanning frequency and the speed of the production line after speed adjustment is avoided, the optimal coordination of the scanning frequency and the speed of the production line is ensured, the production efficiency is improved, the product quality is ensured, the running condition of the production line is monitored in real time, the running state of the production line is good, and the probability of faults is reduced.
The production method for descaling and speed regulation of the surface of the strip steel can regulate the production line speed according to the gray value of the surface of the strip steel, and can also judge the running state of the production line by performing reverse feedback comparison according to the actual running speed of the production line and the standard speed corresponding to the gray value in the database, so that the coordination of the gray value of the surface of the strip steel and the line speed of the production line is improved, the optimal production speed is achieved, and the production efficiency is improved.
Preferably, the scanning period of the scanning module is t=l/V new, where: v new is the current actual running speed of the production line, and L is the distance between the scanning module and the output end of the production line.
Preferably, the scanning period of the scanning module is the same as the period of the linear velocity contrast between the speed of the production line when the scanning module scans the surface of the strip steel and the corresponding linear velocity of the actual gray value in the database.
Preferably, when the production line is regulated in speed up or down, firstly calculating the speed deviation V k according to the gray value deviation, and when the gray value deviation is positive, increasing the production line speed to V new=Vold+Vk; and when the gray value is negative, the production line speed is reduced to V new=Vold-Vk, wherein V old is the speed of the production line when the scanning module scans the surface of the strip steel.
Preferably, the speed deviation is calculated according to formula V k = |Δg|p; wherein V k is the speed deviation, ΔG is the gray value deviation, and P is the ratio of gray value to linear speed in the database.
Preferably, the minimum gray value deviation Δgmin=2 to 20.
Preferably, the preset deviation amplitude F is 0.8-0.9, if V old/Vb is less than or equal to F, an early warning instruction is sent to the early warning module, wherein V old is the speed of a production line when the scanning module scans the surface of the strip steel, and V b is the corresponding linear speed of an actual gray value in the database.
Preferably, the maximum speed of the line operation is set to be V max, and when the speed is regulated, if the speed after the speed of the line is increased according to the speed deviation is greater than V max, the line is regulated to be V max.
Preferably, the scanning module comprises a visual scanning system arranged on one side of the production line, the visual scanning system comprises a scanning component and a control element for controlling the scanning component to periodically scan, and the control element is in communication connection with the controller.
Preferably, the distance l=10 meters between the scanning module and the output end of the production line.
As a second aspect of the present invention, there is provided an electronic apparatus comprising:
one or more processors;
And a memory having one or more computer programs stored thereon, which when executed by the one or more processors cause the one or more processors to implement the method of scale removal and speed regulation of the first aspect of the present invention.
As a third aspect of the present invention, there is provided a computer readable medium having stored thereon a computer program which when executed by a processor implements the descaling conditioning method of the first aspect of the present invention.
As a fourth aspect of the present invention, there is provided a speed regulation system comprising at least one scanning module, an early warning module, and the electronic device of the second aspect, the scanning module comprising a vision scanning system disposed on one side of a production line, the vision scanning system comprising a scanning component and a control element for controlling the scanning component to periodically scan, the control element being communicatively connected to a controller.
The invention also can well reflect the relation between the gray value and the linear speed of the production line through the database generated by the relation between the gray value on the surface of the strip steel and the linear speed of the production line, provides a basis for the speed regulation of the production line, and ensures that the speed regulation is more accurate.
The method of the invention is adopted, firstly, gray value calibration is carried out on the sample plate through the sample plate and the vision system, and gray value (minimum standard) meeting the surface quality of the customer is obtained. Data are collected through actual simulation at different linear speeds of a production line, and a data experience base of different linear speeds and corresponding gray values is formed. And converting the gray value actually acquired by a set algorithm to obtain the optimal processing linear speed, and storing and updating the optimal processing linear speed into a system. And the updated actual line speed and surface quality photos can be transmitted to the background for real-time monitoring by staff. The invention not only can ensure the descaling quality, but also can maximally utilize the production line performance, improve the equipment productivity and reduce the production cost.
These features and advantages of the present application will be disclosed in more detail in the following detailed description and the accompanying drawings. The best mode or means of the present application will be described in detail with reference to the accompanying drawings, but is not limited to the technical scheme of the present application. In addition, these features, elements, and components are shown in plural in each of the following and drawings, and are labeled with different symbols or numerals for convenience of description, but each denote a component of the same or similar construction or function.
Drawings
The application is further described below with reference to the accompanying drawings:
FIG. 1 is a flow chart of a speed regulation method of the invention;
FIG. 2 is a schematic diagram of a production line arrangement according to one embodiment of the present invention;
FIG. 3 is a gray value detection image at the highest linear velocity according to one embodiment of the present invention;
FIG. 4 is a gray value detection image at the lowest linear velocity according to one embodiment of the present invention;
FIG. 5 is a table showing the relationship between linear velocity and gray scale values of a partial production line according to one embodiment of the present invention;
FIG. 6 is a flow chart of one embodiment of an electronic device provided by the present invention;
FIG. 7 is a flowchart of one embodiment of a computer readable medium provided by the present invention.
Wherein,
1. A descaling unit; 2. a visual recognition system; 3. cleaning a drying device; 101. a processor; 102. a memory; 103. an I/O interface; 104. a bus.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The examples in the embodiments are intended to illustrate the present application and are not to be construed as limiting the present application.
Reference in the specification to "one embodiment" or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment itself can be included in at least one embodiment of the disclosure. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.
The invention discloses an automatic speed regulation production method for strip steel surface descaling, which is mainly applied to a production line adopting EPS descaling, and is shown in the attached figure 1, wherein the speed regulation production method is used for a controller to descale the strip steel surface and comprises the following steps of;
In step S110, a scanning control signal is periodically sent to a scanning module, so that the scanning module periodically scans and detects the surface of the strip steel on the production line, wherein the period value is determined according to the current actual running speed of the production line;
in step S120, receiving a scanning detection result of the scanning module, and obtaining an actual gray value of the surface of the strip steel;
in step S140, subtracting a reference gray value from the obtained actual gray value to obtain a gray value deviation, where the reference gray value is a gray value of an image corresponding to the descaling degree of the strip steel surface reaching a predetermined standard;
In step S150, firstly, the gray value deviation is determined, and step S150 is executed according to the determination result, specifically, if the absolute value of the gray value deviation is greater than the minimum gray value deviation and the gray value deviation is positive, the production line speed is adjusted;
When the absolute value of the gray value deviation is larger than the minimum gray value deviation and the gray value deviation is negative, the speed of the production line is reduced and adjusted;
In step S130, the speed of the production line when the scanning module scans the surface of the strip steel is periodically compared with the corresponding linear speed of the actual gray value in the database, and the deviation amplitude is calculated;
in step S131, an early warning command is sent to the early warning module when the deviation amplitude is smaller than the preset deviation amplitude.
It should be noted that the numbers of the steps and the arrows in the drawings are only for convenience of description, and do not represent that the steps must be performed in this order when the method is actually adopted.
The database is generated by calibrating the template according to the surface quality requirements of the strip steel template and the client plate, and a reference gray value is generated. And according to the maximum running speed range of the strip steel unit, testing the gray values of the production line at different linear speeds, and carrying out statistics and summarization on the gray values and the corresponding speeds from low to high to form an EPS surface quality (gray value) and linear speed relation database.
When the method is applied, the actual gray value of the strip steel surface on the production line is scanned, the detected actual gray value is fed back to the system, the system converts the actually acquired gray value according to a set algorithm to obtain the optimal processing linear speed, the optimal processing linear speed is stored and updated in the system, and the system automatically adjusts the speed of the production line according to the obtained optimal processing linear speed.
The production method for descaling and speed regulating on the surface of the strip steel can regulate the production line speed according to the gray value on the surface of the strip steel, and can also judge the running state of the production line by performing reverse feedback comparison according to the actual running speed of the production line and the standard speed corresponding to the gray value in the database, thereby improving the coordination between the gray value on the surface of the strip steel and the line speed of the production line, being more beneficial to achieving the optimal production speed and improving the production efficiency.
It should be noted that the scanning period T in the present invention is not a fixed period, but a period that is dynamically changed in association with the line speed. Because if the period T is a fixed time, when the line speed is slower, the number of scans of the scanning component on the surface of the strip steel with the length S is N1, and when the line speed is faster, the number of scans of the scanning component on the surface of the strip steel with the length S is N2, then N1> N2, it can be seen that when the line speed is faster, the number of scans of the strip steel with the same length section is less, and at this time, missed inspection may occur on the surface of the strip steel, and the problem that the product quality is not satisfactory may be caused. The invention can adjust the scanning frequency of the strip steel surface in real time according to the actual running speed of the production line, avoid the problems of efficiency reduction or possible missed detection caused by the discrepancy between the scanning frequency and the production line speed after speed regulation, ensure the optimal coordination of the scanning frequency and the production line speed, improve the production efficiency and ensure the product quality.
In step S110, the scanning period of the scanning module is set to t=l/V new, where: v new is the current actual running speed of the production line, and L is the distance between the scanning module and the output end of the production line. According to the application, the distance L=10 meters between the visual system and the output end of the production line in one embodiment can be used for finding out that T is the time for conveying products from the output end of the production line to the visual system in the current running state of the production line, and quality accidents caused by missed detection can be avoided through the design of the scanning period which is dynamically changed.
In addition, in step S130, the scanning period of the scanning module is the same as the period in which the speed of the production line when the scanning module scans the surface of the strip steel is compared with the corresponding linear speed of the actual gray value in the database. In the actual operation process, the scanning of the strip steel surface and the feedback of the operation state of the production line sequentially operate according to the sequential actions, and the operation state of the production line can be timely known according to the gray value.
In step S150, when the production line is adjusted to be up-speed or down-speed, the speed deviation V k is calculated according to the gray value deviation, and when the gray value deviation is positive, the production line speed is up-speed to V new=Vold+Vk; and when the gray value is negative, the production line speed is reduced to V new=Vold-Vk, wherein V old is the speed of the production line when the scanning module scans the surface of the strip steel. Wherein the speed deviation is calculated according to formula V k = |Δg|p; vk is the speed deviation, Δg is the gray value deviation, and P is the ratio of gray value to linear speed in the database. After the speed of the production line is regulated, the scanning period is determined again according to the speed of the production line after the speed is regulated, and then the steps are executed again to realize the cyclic regulation of the speed of the production line.
The scanning module comprises a visual scanning system arranged on one side of a production line, wherein the visual scanning system comprises a scanning component and a control element for controlling the scanning component to periodically scan, and the control element is in communication connection with a controller. The visual scanning system periodically photographs or scans the surface of the strip steel on the production line to obtain an image capable of reflecting the surface of the strip steel, and the image is combined to obtain an actual gray value according to a built-in algorithm.
In addition, in the actual production process, since the surface gray value of the strip steel cannot be kept at a fixed value and has certain fluctuation, if any change of the gray value is subjected to speed adjustment, the speed adjustment is obviously unrealistic, therefore, the application sets the minimum gray value deviation delta Gmin, the production line speed is adjusted only when the absolute value of the gray value deviation is larger than delta Gmin, the production line speed is kept to be in the current state when the absolute value of the gray value deviation is smaller than delta Gmin, and the delta Gmin can be set according to the requirements of customers when the specific setting is performed, and only the range required by the customers is ensured. Of course, the higher the customer's quality requirements for the product, the smaller the corresponding value of Δgmin. One embodiment of the application sets Δgmin to 10. It is of course conceivable that, in the actual setting, the deviation ratio of the gray value may be used as a reference for adjustment, and only the minimum deviation ratio of the gray value for speed adjustment needs to be set in advance.
When the absolute value of the gray scale deviation is larger than delta Gmin, firstly, calculating according to the actual deviation value and the corresponding proportionality coefficient to obtain the actual speed deviation, wherein the speed deviation V k = |delta G|P; units: rice/min; wherein P is a ratio coefficient of gray value to linear velocity obtained from the database in step S1, and may be obtained by drawing a relation curve simulation of gray value and velocity value in the database, where the ratio coefficient of gray value to linear velocity p=0.005 in one embodiment of the present application.
When the detected actual gray value is larger than the reference gray value, the quality of the surface product meets the requirement, the processing efficiency can be improved by increasing the line speed, and the surface quality (gray value) of the product can be reduced due to the improvement of the line speed, real-time feedback is performed in the adjusting process until the detected gray value and the reference gray value are kept within a certain range (+/-delta Gmin), and then the adjustment is stopped; when the detected actual gray value is smaller than the reference gray value, the quality of the surface product does not meet the requirement, the product quality can be improved by reducing the line speed, the gray value of the surface of the product can be improved due to the fact that the line speed is reduced, real-time feedback is carried out in the adjusting process until the detected gray value and the reference gray value are kept within a certain range (+/-delta Gmin), and then the adjusting is stopped.
It should be noted that when the production line speed is adjusted, the invention can also reversely feed back the actual running speed of the production line to the system, compare V old with the standard line speed V b under the same gray value in the database, if V old/Vb is less than or equal to F (F is the deviation amplitude of the production line efficiency, one embodiment of the invention sets F to 0.9), the performance state of the production line is poor, the efficiency is reduced, the potential failure risk exists, at this time, the controller sends an early warning instruction to the early warning module, the early warning module sends an early warning signal after receiving the early warning instruction, the specific early warning signal can be set according to the actual situation, for example, a display screen can be set, the early warning signal is set to be a flashing warning signal on the display screen, or early warning sound is sent, etc.; after early warning prompt, backstage personnel can timely overhaul the production line after receiving the early warning prompt, so that faults of a larger degree caused by untimely overhaul are avoided, and the production efficiency is ensured.
In the actual design, the calculated and updated actual production line speed and the strip steel surface photo can be synchronously displayed on a display screen, so that data transmission is realized, and personnel remote monitoring is facilitated.
The invention can be seen that the linear speed of the production line is regulated in a dynamic process, so that the linear speed of the production line can be kept to run within a certain range, the production efficiency is improved, and the uniformity of the product quality is ensured.
It should be noted that, since the production line generally has the maximum upper limit speed, the maximum speed that the production line can operate is set to V max, and when the speed is adjusted, if V new＞Vmax, the speed is adjusted to V max. The upper limit speed of the production line is set to be 30 m/min, in the process of automatic speed regulation of the whole EPS production line, when V new＞Vmax is calculated, acceleration is not performed any more, and the current linear speed V new is automatically set to be 30 m/min in a program.
It is of course easily conceivable that the production line has a minimum line speed V min, and that the production line is operating at a regulated speed V new≥Vmin.
In addition, the relation between the gray value and the linear speed of the production line can be well reflected through the database generated by the relation between the gray value on the surface of the strip steel and the linear speed of the production line, and a basis is provided for speed regulation of the production line, so that speed regulation is more accurate.
The production method for descaling and speed regulation of the surface of the strip steel can regulate the production line speed according to the gray value of the surface of the strip steel, and can also judge the running state of the production line by performing reverse feedback comparison according to the actual running speed of the production line and the standard speed corresponding to the gray value in the database, so that the coordination of the gray value of the surface of the strip steel and the line speed of the production line is improved, the optimal production speed is achieved, and the production efficiency is improved.
The method of the invention is adopted, firstly, gray value calibration is carried out on the sample plate through the sample plate and the vision system, and gray value (minimum standard) meeting the surface quality of the customer is obtained. And collecting data through actual simulation at different linear speeds of the production line, and forming a database of different linear speeds and corresponding gray values. And converting the gray value actually acquired by a set algorithm to obtain the optimal processing linear speed, and storing and updating the optimal processing linear speed into a system. And the updated actual line speed and surface quality photos can be transmitted to the background for real-time monitoring by staff. The invention not only can ensure the descaling quality, but also can maximally utilize the production line performance, improve the equipment productivity and reduce the production cost.
The method of the invention is further illustrated by a specific example:
Taking a single EPS descaling unit production line as an example, referring to fig. 2, the device comprises a descaling unit, a visual identification system and a cleaning and drying device, wherein the cleaning and drying device is arranged between the descaling unit and the visual identification system, and the test strip steel is made of Q235B, and has the width of 1250mm and the thickness of 3mm. According to the surface quality requirements of different customers on the product, a sample plate (the surface quality of which meets the minimum standard) after EPS descaling treatment is selected, as shown in figure 2. And placing the strip steel sample under a vision system for scanning and photographing, and performing gray value initial calibration to obtain a reference light gray value G basic =600, so as to obtain the conversion relation between the gray value and the gray value of the strip steel surface under a certain condition. The reference minimum gray value photo of the surface of the strip steel detected by the vision system is shown in fig. 3, and the highest gray value is shown in fig. 4.
In fig. 1, the distance from the EPS process descaler group to the gray value detection vision system is 10 meters, and the uninterrupted scanning time of the scanning module is set to be T at the minimum speed of 10 meters/min, where t=10/V new, and V new is the current actual running speed of the production line. In order to ensure the accuracy of the speed detection, the scanning period T is required to be performed after the running speed of the equipment is stable, so that the gray value data detected at different linear speeds can be timely updated and accurately, and the data delay phenomenon is avoided.
And taking the obtained standard gray value G basic as a reference, and carrying out data summarization on the surface brightness (namely the gray value) detected by the vision system under different linear speeds and the corresponding linear speed within the allowable linear speed range of 10-30 m/min to form a historical database (shown in figure 5), and comparing the actual speed calculation with the linear energy production under the subsequent automatic mode as a reference.
According to the statistical data of the database, in the automatic mode, the fastest speed V max of the production line is set to be 30 m/min, and the lowest linear speed Vmin is set to be 10 m/min (determined by the strip threading speed, and the production line is operated under the speed in the automatic adjusting mode).
A scaling factor p= (30-10)/(1000-600) =0.005 for a single gray value to linear velocity was calculated.
When the EPS production line runs, calculating the deviation delta G of the actual gray value and the reference gray value according to the actual gray value G real fed back by the scanning module, wherein delta G=G real- Gbasic; meanwhile, the minimum amplitude of speed regulation based on gray values is set to be 10, and when the absolute delta G is less than or equal to 10, the current line speed is basically stable, and the speed regulation of the line is not carried out.
When |Δg| > 10, a velocity deviation value V k = |Δg| 0.005 is calculated.
Comparing Δg with a value 0 to determine positive and negative, when Δg is smaller than 0, indicating that the surface finish of the current strip steel is lower than the minimum standard G basic =600, triggering a deceleration command V new=Vold-Vk until the re-detected gray value is larger than G basic; meanwhile, the current production line speed V old is compared with the line speed V under the same gray value in the database, if V old/V is less than or equal to 0.9, the performance state of the production line is poor, the efficiency is reduced, potential fault risks exist, and early warning prompt is carried out on a display screen.
When delta G is more than 0, the surface smoothness of the current strip steel is higher than the minimum standard, and an acceleration command V new=Vold +Vk is triggered until the gray value detected again is stabilized near G basic =600; in the same way, the current production line speed V old is compared with the line speed V under the same gray value in the database, if V old/Vb is less than or equal to 0.9 (the preset deviation amplitude in the embodiment is set to be 0.9), the production efficiency deviation of the production line is greater than 10%, the production line is poor in energy state, the efficiency is reduced, potential fault risks exist, and early warning prompt is carried out on a display screen.
In the automatic speed regulation process of the whole production line, when V new＞Vmax is calculated, acceleration is not performed any more, and the current linear speed V new is automatically set to be 30 m/min in the program.
In the automatic speed increasing and decreasing process of the linear speed of the production line, the running speed of the production line is controlled by controlling the rotating speed of the motor, and the whole speed regulating process is smooth by optimizing the acceleration or the deceleration of the motor, so that the sudden speed increase or the sudden speed decrease at a certain moment is avoided, and the uniformity of the surface quality of the strip steel is ensured.
As a second aspect of the present invention, there is provided an electronic apparatus, wherein, as shown in fig. 6, the electronic apparatus includes:
one or more processors 101;
a memory 102 having one or more computer programs stored thereon which, when executed by the one or more processors 102, cause the one or more processors 102 to implement the descaling method provided by the first aspect of the present invention.
The electronic device may also include one or more I/O interfaces 103 coupled between the processor 101 and the memory 102 configured to enable information interaction of the processor 101 with the memory 102.
Wherein the processor 101 is a device having data processing capabilities, including but not limited to a Central Processing Unit (CPU) or the like; memory 102 is a device with data storage capability including, but not limited to, random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically charged erasable programmable read-only memory (EEPROM), FLASH memory (FLASH); an I/O interface (read/write interface) is connected between the processor and the memory, and can implement information interaction between the processor and the memory, which includes, but is not limited to, a data Bus (Bus), and the like.
In some embodiments, processor 101, memory 102, and I/O interface 103 are connected to each other, and thus to other components of the electronic device, by bus 104.
As a third aspect of the present invention, as shown in fig. 7, there is provided a computer readable medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the above-mentioned descaling speed regulation method provided by the present invention.
As a fourth aspect of the present invention, there is provided a speed regulation system comprising at least one scanning module, an early warning module, and the electronic device of the second aspect, the scanning module comprising a vision scanning system disposed on one side of a production line, the vision scanning system comprising a scanning component and a control element for controlling the scanning component to periodically scan, the control element being communicatively connected to a controller.
Those skilled in the art will appreciate that implementing all or part of the processes in the methods of the embodiments described above may be accomplished by computer programs to instruct related hardware. Accordingly, the computer program may be stored in a non-volatile computer readable storage medium, which when executed, performs the method of any of the above embodiments. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (SYNCHLINK) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that the present invention includes but is not limited to the accompanying drawings and the description of the above specific embodiment. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (8)
1. The descaling speed regulation method is used for a controller and is characterized by comprising the following steps of;
Periodically sending a scanning control signal to a scanning module to enable the scanning module to periodically scan and detect the surface of the strip steel on the production line, wherein a period value is determined according to the current actual running speed of the production line;
Receiving a scanning detection result of the scanning module, and obtaining an actual gray value of the surface of the strip steel;
subtracting a reference gray value from the obtained actual gray value to obtain a gray value deviation, wherein the reference gray value is the gray value of an image corresponding to the descaling degree of the surface of the strip steel reaching a preset standard;
Under the condition that the absolute value of the gray value deviation is larger than the minimum gray value deviation and the gray value deviation is a positive value, the production line is regulated to rise;
When the absolute value of the gray value deviation is larger than the minimum gray value deviation and the gray value deviation is negative, the speed of the production line is reduced and adjusted;
Periodically comparing the speed of the production line when the scanning module scans the surface of the strip steel with the corresponding linear speed of the actual gray value in the database and calculating the deviation amplitude; the scanning period of the scanning module is the same as the period of the comparison between the speed of the production line when the scanning module scans the surface of the strip steel and the corresponding linear speed of the actual gray value in the database; and defining the deviation amplitude as F, presetting the deviation amplitude as 0.8-0.9, and if V old/Vb is less than or equal to F, sending an early warning instruction to an early warning module, wherein V old is the speed of a production line when the scanning module scans the surface of the strip steel, and V b is the corresponding linear speed of an actual gray value in a database.
2. The method of scale removal and speed regulation as claimed in claim 1, wherein the scanning module has a scanning period of t=l/V new, wherein: v new is the current actual running speed of the production line, L is the distance between the scanning module and the output end of the production line, and l=5-20 meters.
3. The method according to claim 2, wherein when the production line is adjusted to be increased or decreased, the speed deviation V k is calculated according to the gray value deviation, and when the gray value deviation is positive, the production line speed is increased to V new=Vold+Vk; and when the gray value deviation is negative, the production line speed is reduced to V new=Vold-Vk, wherein V old is the speed of the production line when the scanning module scans the surface of the strip steel.
4. A method of scale removal and speed regulation as claimed in claim 3, wherein said speed deviation is calculated according to the formula V k = |Δg|p; wherein V k is the speed deviation, ΔG is the gray value deviation, and P is the ratio of gray value to linear speed in the database.
5. The method of scale removal and speed regulation according to claim 1, wherein the minimum gray value deviation is defined as Δgmin, and Δgmin=2 to 20.
6. An electronic device, comprising:
one or more processors;
memory having stored thereon one or more computer programs which, when executed by the one or more processors, cause the one or more processors to implement the descaling pacing method according to any of claims 1 to 5.
7. A computer readable medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements a descaling conditioning method according to any of claims 1 to 5.
8. The speed regulating system is characterized by comprising at least one scanning module, an early warning module and the electronic equipment in claim 6, wherein the scanning module comprises a vision scanning system arranged on one side of a production line, the vision scanning system comprises a scanning component and a control element for controlling the scanning component to periodically scan, and the control element is in communication connection with a controller.
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