A method and apparatus for constructing a digital steel coil

Abstract

Embodiments of the present application provide a method for constructing a digital steel coil, the method comprising: determining at least one data acquisition node of a steel coil rolling line according to equipment settings of the steel coil rolling line, acquiring rolling data of each data acquisition node; obtaining an identification of a physical steel coil, spatially and temporally aligning each set of rolling data with the physical steel coil, and generating an initial digital steel coil; reducing the data frequency of the aligned rolling data, and performing data reduction on the initial digital steel coil; identifying the rolling data on the initial digital steel coil according to equipment numbers of each equipment on the steel coil rolling line, and completing the construction of the digital steel coil. The technical solution of the embodiments of the present application can associate and match the state data of different equipment with the process data and product quality data, thereby forming fully integrated data of equipment, process, and quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of data analysis, in particular to a method and device for constructing a digital steel coil. BACKGROUND

[0002] In terms of quality analysis, product design, production, cost, quality, equipment, energy, environmental protection, logistics and user data are recorded throughout the whole process, and real-time quality prediction of the steel strip at each position can be realized, but the fusion of equipment data is very difficult.

[0003] Therefore, there is an urgent need for a method for constructing a digital steel coil to associate and match the state data of different equipment with process data and product quality data, so as to form fully integrated data of equipment, process and quality. SUMMARY

[0004] Embodiments of the present application provide a method and device for constructing a digital steel coil, which can at least partially associate and match the state data of different equipment with process data and product quality data, so as to form fully integrated data of equipment, process and quality.

[0005] Other features and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0006] According to an aspect of an embodiment of the present application, a method for constructing a digital steel coil is provided, which comprises: determining at least one data acquisition node of a steel coil rolling line according to the equipment settings of the steel coil rolling line, acquiring rolling data of each data acquisition node; obtaining the identification of a physical steel coil, spatially aligning each group of rolling data with the physical steel coil and temporally aligning the same, generating an initial digital steel coil; reducing the data frequency of the aligned rolling data, and reducing the data frequency of the initial digital steel coil; identifying the rolling data on the initial digital steel coil according to the equipment number of each equipment on the steel coil rolling line, and completing the construction of the digital steel coil.

[0007] In some embodiments of the present application, the determination of at least one data acquisition node of the steel coil rolling line according to the equipment settings of the steel coil rolling line comprises: determining the data acquisition node corresponding to each equipment in the steel coil rolling line according to the equipment settings of the steel coil rolling line, taking each equipment as a data acquisition node.

[0008] In some embodiments of the present application, the spatial alignment of each group of rolling data with the physical steel coil comprises: obtaining the identification of the physical steel coil, dividing the physical steel coil in length, dividing the physical steel coil into at least two segments along the length; establishing a corresponding relationship between each group of rolling data and each segment of the physical steel coil to complete the spatial alignment.

[0009] In some embodiments of the present application, based on the foregoing scheme, the length division of the solid steel coil comprises: length division of the solid steel coil along the length according to 10%, 80%, 10% of steel biting, smooth rolling and steel throwing.

[0010] In some embodiments of the present application, the time alignment of each group of rolling data and the solid steel coil comprises: intercepting at least one device in-out steel time in each group of rolling data; obtaining rolling data corresponding to each device in-out steel time; and establishing a corresponding relationship between the rolling data corresponding to each device in-out steel time and the solid steel coil according to the identification of the solid steel coil to complete the time alignment.

[0011] In some embodiments of the present application, the data frequency of the aligned rolling data is used to reduce the data frequency of the initial digital steel coil, which comprises: if the aligned rolling data is vibration high frequency data, extracting the waveform feature value to reduce the data frequency of the initial digital steel coil; if the aligned rolling data is high frequency data, extracting the feature value to reduce the data frequency of the initial digital steel coil; and if the aligned rolling data is low frequency data, extracting the average value to reduce the data frequency of the initial digital steel coil.

[0012] In some embodiments of the present application, based on the foregoing scheme, if the aligned rolling data is high frequency data, the feature value is extracted to reduce the data frequency of the initial digital steel coil, which comprises: if the aligned rolling data is high frequency data, the maximum value or the minimum value or the variance or the effective value is extracted to reduce the data frequency of the initial digital steel coil.

[0013] In some embodiments of the present application, according to the device number of each device on the steel coil rolling line, the rolling data on the initial digital steel coil is identified according to the device number, and the method further comprises: each device on the steel coil rolling line is encoded according to the coding rule of the steel coil rolling line to determine the device number of each device.

[0014] In some embodiments of the present application, the method further comprises: for rolling data generated by non-steel coil rolling line devices, custom coding is performed to identify the rolling data on the initial digital steel coil according to the custom coding.

[0015] According to an aspect of an embodiment of the present application, a digital steel coil construction device is provided, the device comprising: a determination unit configured to determine at least one data acquisition node of a steel coil rolling line according to equipment settings of the steel coil rolling line, and acquire rolling data of each data acquisition node; an acquisition unit configured to acquire an identification of a physical steel coil, and perform spatial alignment and time alignment of each set of rolling data with the physical steel coil, and generate an initial digital steel coil; a frequency reduction unit configured to perform data frequency reduction on the initial digital steel coil according to data frequency of the aligned rolling data; and an identification unit configured to identify the rolling data on the initial digital steel coil according to equipment numbers of each equipment on the steel coil rolling line, and complete construction of the digital steel coil.

[0016] Based on the above scheme, the technical scheme provided by the present application has at least the following advantages and progress:

[0017] By dividing the process nodes by equipment, a data acquisition mode taking equipment as the main body is realized, which creates conditions for equipment data application and development. By cutting the head, middle and tail of the steel strip, the segmentation of different typical working conditions such as biting steel, stable rolling and throwing steel is realized, and the data quality is improved. By reducing the frequency of high-frequency data according to characteristic values, the unification of high-frequency and low-frequency data is realized, so that data of different dimensions can be converged, and the bridge structure between products and equipment is clear and complete. By designing a data steel coil construction method, a new idea of industrial data alignment analysis is provided according to the characteristics of the rolling mill line. The data is collected, managed and stored according to the equipment digital steel coil mode, the problem of data alignment and correlation based on equipment is solved, more possibilities for in-depth development and utilization of data are brought, and it has strong reference significance and popularization value in fields with similar production line characteristics.

[0018] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0020] Figure 1 a flowchart of a digital steel coil construction method according to an embodiment of the present application is shown;

[0021] Figure 2 a rolling data alignment schematic diagram according to an embodiment of the present application is shown;

[0022] Figure 3 A flow chart of a method for constructing a digital coil is shown according to an embodiment of the present application;

[0023] Figure 4 A schematic diagram showing length division of the physical coil according to an embodiment of the present application is shown;

[0024] Figure 5 A flow chart of a method for constructing a digital coil is shown according to an embodiment of the present application;

[0025] Figure 6 A flow chart of a method for constructing a digital coil is shown according to an embodiment of the present application;

[0026] Figure 7 A graph showing the down-sampling of high frequency process data and continuously collected vibration data according to an embodiment of the present application is shown;

[0027] Figure 8 A schematic diagram showing alignment of high frequency data in a PDA according to an embodiment of the present application is shown;

[0028] Figure 9 A structural diagram of a construction device for a digital coil according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0029] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art.

[0030] First of all, it should be noted that in the present application, the digital coil is a product design, production, cost, quality, equipment, energy, environmental protection, logistics and user data recording with a coil as a carrier and length as a reference, and the full-process data is aligned on the coil length to realize real-time quality prediction of each position of the strip.

[0031] Referring to Figure 1 .

[0032] Figure 1 A flow chart of a method for constructing a digital coil is shown according to an embodiment of the present application, as Figure 1 shown, the method can include steps S101-S104:

[0033] In step S101, at least one data acquisition node of the steel coil rolling line is determined according to the equipment setting of the steel coil rolling line, and rolling data of each data acquisition node is acquired.

[0034] In step S102, the identification of the entity steel coil is acquired, each group of rolling data is spatially aligned with the entity steel coil, and an initial digital steel coil is generated.

[0035] In step S103, the initial digital steel coil is subjected to data frequency reduction according to the data frequency of the aligned rolling data.

[0036] In step S104, the rolling data on the initial digital steel coil is identified according to the equipment number of each equipment on the steel coil rolling line according to the equipment number, and the construction of the digital steel coil is completed.

[0037] In the present application, the method for determining at least one data acquisition node of the steel coil rolling line according to the equipment setting of the steel coil rolling line can include: determining the data acquisition node corresponding to each equipment in the steel coil rolling line according to the equipment setting of the steel coil rolling line, taking each equipment as the data acquisition node.

[0038] In the present application, the rolling process can be divided by the main equipment of the rolling line, each equipment represents a process node, and the strip parameters before and after the process on each node, the process data and equipment state data in the process are recorded and stored by taking the steel coil as a carrier.

[0039] Please refer to Figures 2 to 5 .

[0040] Figure 2 A rolling data alignment schematic diagram according to one embodiment of the present application is shown, as Figure 2 shown, the steel coil rolling line can include a heating furnace, a rough rolling descaling machine, a width setting machine, a two-roller rolling mill, a vertical roller rolling mill, a four-roller reversible rolling mill, a flying shear, a finishing rolling descaling machine, a finishing rolling mill group, a laminar cooling machine group, and a coiling machine group.

[0041] Figure 3 A flowchart of a digital steel coil construction method according to one embodiment of the present application is shown, as Figure 3 shown, in step S102, the method for spatially aligning each group of rolling data with the entity steel coil can include steps S301-S302:

[0042] In step S301, the identification of the entity steel coil is acquired, the entity steel coil is divided in length, and the entity steel coil is divided into at least two segments along the length.

[0043] In step S302, the corresponding relationship between each group of rolling data and each segment of the entity steel coil is established to complete the spatial alignment.

[0044] In the present application, according to the difference in production time, for the same steel coil, each space length is most likely to stay in different equipment at the same time, so the same equipment will generate similar format rolling data for different positions of the steel coil, and therefore it is necessary to align the data in space for the length of the steel coil, to establish the corresponding relationship between each group of rolling data and each section of the physical steel coil, to complete the spatial alignment.

[0045] Figure 4 A schematic diagram of length division of the physical steel coil according to one embodiment of the present application is shown as follows: Figure 4 As shown in the present application, the physical steel coil can be divided into 10%, 80%, and 10% along the length according to the length of the bite, smooth rolling, and throw steel.

[0046] In the present application, unlike the meter-level division of the data steel coil, the equipment digital steel coil is characterized by the greater difference between the bite and the smooth rolling and the throw steel during the rolling process, and the steel coil length is divided into 10%, 80%, and 10% according to the length of the bite, smooth rolling, and throw steel, and after aligning the quality data recorded by the online instrument and the equipment state data recorded by the iba with the length of the steel coil, the frequency is reduced in four dimensions of the head, middle, tail, and full length of each steel coil.

[0047] Figure 5 A flowchart of the construction method of the digital steel coil according to one embodiment of the present application is shown as follows: Figure 5 As shown in step S102, the method of aligning each group of rolling data with the physical steel coil in time can include steps S501-S503:

[0048] Step S501, intercepting at least one equipment in-out steel time in each group of rolling data.

[0049] Step S502, obtaining the rolling data corresponding to each equipment in-out steel time.

[0050] Step S502, according to the identification of the physical steel coil, establishing the corresponding relationship between the rolling data corresponding to each equipment in-out steel time and the physical steel coil, to complete the time alignment.

[0051] Similarly, in addition to the alignment in space, for a space length of the steel coil, as the production time passes, a space length of the steel coil will be located in different equipment at different times, and in order to construct the digital steel coil, in order to subsequent comprehensive analysis of data, it is necessary to establish the corresponding relationship between the rolling data corresponding to each equipment in-out steel time and the physical steel coil, to complete the time alignment.

[0052] In summary, in the present application, a steel coil can be identified by a unique coil number, and the associated original data sources are mainly PDA data recorded by IB A and first and second level electric messages, including quality setting values, rolling production performance, equipment state data, and quality process data. The heating furnace mainly extracts the heating process in the furnace by the coil number, including the temperature entering the furnace, the time in the furnace, and the temperature leaving the furnace. Each rolling mill intercepts the continuous process data during rolling according to the steel entering and throwing signals of the coil number, including vibration, temperature, current, power, position, speed, flow, pressure, force feedback, shape and size, etc. The original data associated with each coil is written as a dat file, at which time the continuous data can be viewed and simply analyzed in the PDA.

[0053] Please refer to Figures 6 to 8 .

[0054] Figure 6 A flowchart of a method for constructing a digital steel coil according to an embodiment of the present application is shown, as shown in Figure 6 In step S103, the method for reducing the data frequency of the initial digital steel coil according to the aligned rolling data can include steps S601-S603:

[0055] Step S601, if the aligned rolling data of one type is high-frequency vibration data, the waveform characteristic value is extracted to reduce the data frequency of the initial digital steel coil.

[0056] Step S602, if the aligned rolling data of one type is high-frequency data, the characteristic value is extracted to reduce the data frequency of the initial digital steel coil.

[0057] Step S603, if the aligned rolling data of one type is low-frequency data, the average value is extracted to reduce the data frequency of the initial digital steel coil.

[0058] In the present application, all data can be reduced in frequency on the basis of data associated with the coil number, wherein the waveform characteristic values such as kurtosis, effective value, peak value, peak-to-peak value, etc. are taken for high-frequency vibration data; the maximum and minimum values, mean value, variance, effective value, etc. are taken for high-frequency process data such as current, pressure, position, etc.; and the average value is directly taken for low-frequency data such as temperature, liquid level, etc.

[0059] In the present application, the characteristic value groups of biting steel, stable, throwing steel, and full length can be taken respectively according to different objects, wherein the process data characteristic value group includes mean value, effective value, variance, range, maximum and minimum value, etc.; the vibration data characteristic value group and the non-continuous vibration waveform take the same value; and the average values of biting steel, stable, throwing steel, and full length are taken for low-frequency data such as temperature, liquid level, etc.

[0060] Figure 7A curve graph showing high frequency process data and continuously collected vibration data down-sampled according to one embodiment of the present application is shown as Figure 7 As shown, a set of feature group 1 can be extracted for the full length of the steel coil as representative data of the full length of the steel coil; a set of feature group 2 can be extracted for the head of the steel coil as representative data of the head of the steel coil; a set of feature group 3 can be extracted for the stable section of the steel coil as representative data of the stable section of the steel coil; and a set of feature group 4 can be extracted for the tail of the steel coil as representative data of the tail of the steel coil.

[0061] Figure 8 A schematic diagram showing alignment of high frequency data in PDA according to one embodiment of the present application is shown as Figure 8 As shown, after extraction of feature groups and down-sampling, high frequency data such as rolling temperature, rolling force, etc. are converted into relatively stable curves, but are also sufficient to reflect changes in the rolling process. After down-sampling and denoising, the curves are more convenient for technical personnel to perform data analysis work.

[0062] In the present application, before the rolling data on the initial digital steel coil is identified according to the equipment numbers of the various equipment on the steel coil rolling line, the method can further comprise: coding the various equipment on the steel coil rolling line according to the coding rules of the steel coil rolling line, and determining the equipment numbers of the various equipment.

[0063] In the present application, for rolling data generated by non-steel coil rolling line equipment, self-defined coding is performed, and the rolling data on the initial digital steel coil is identified according to the self-defined coding.

[0064] In the present application, all data items can be coded on the basis of data associated with the steel coil number. Data generated by equipment is coded according to the original coding rules of the equipment system, and non-equipment generated data is self-defined coded, so that all data items have corresponding equipment coding. Then data grouping and modeling are performed according to the equipment coding.

[0065] As described above, the digital steel coil construction method provided by the present application has the following technical effects:

[0066] 1) By dividing the process nodes by equipment, a data collection mode based on equipment is realized, which creates conditions for equipment data application and development.

[0067] 2) By cutting the head, middle and tail of the steel strip, the segmentation of different typical working conditions such as biting steel, stable rolling and throwing steel is realized, and the data quality is improved.

[0068] 3) By down-sampling high frequency data according to feature values, the unification of high and low frequency data is realized, so that data of different dimensions can be converged, and the bridge structure between products and equipment is clear and complete.

[0069] 4) By designing a method for constructing equipment data coils, a new approach to industrial data alignment and analysis is provided, taking into account the characteristics of steel rolling mill production lines. Data is collected, processed, and stored according to the equipment digital steel coil model, which solves the problem of data alignment and correlation based on equipment, bringing more possibilities for in-depth data development and utilization. It has strong reference value and promotion value in fields with similar production line characteristics.

[0070] An embodiment of the apparatus of this application will now be described with reference to the accompanying drawings.

[0071] Please see Figure 9 .

[0072] Figure 9 A simplified structural diagram of a digital steel coil construction apparatus according to an embodiment of this application is shown. The digital steel coil construction apparatus may include: a determining unit 901, an acquiring unit 902, a frequency reduction unit 903, and an identifying unit 904.

[0073] The specific configuration of the digital steel coil construction device can be as follows:

[0074] The determining unit 901 is used to determine at least one data acquisition node of the steel coil rolling line according to the equipment settings of the steel coil rolling line, and to collect rolling data of each data acquisition node.

[0075] The acquisition unit 902 is used to acquire the identifier of the physical steel coil, spatially and temporally align each set of rolling data with the physical steel coil, and generate an initial digital steel coil.

[0076] The frequency reduction unit 903 is used to reduce the data frequency of the initial digital steel coil according to the data frequency of the aligned rolling data.

[0077] The identification unit 904 is used to identify the rolling data on the initial digital steel coil according to the equipment number of each device on the steel coil rolling line, thereby completing the construction of the digital steel coil.

[0078] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0079] It is to be understood that the application is not limited to the precise construction already described above and shown in the drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application should only be limited by the claims appended hereto.

Claims

1. A method of building a digital steel coil, characterized by, The method comprises: According to the equipment setting of the steel coil rolling line, at least one data acquisition node of the steel coil rolling line is determined, and rolling data of each data acquisition node is acquired; The identification of the entity steel coil is obtained, and each group of rolling data is spatially aligned with the entity steel coil and time-aligned to generate an initial digital steel coil; According to the data frequency of the aligned rolling data, the data of the initial digital steel coil is down-sampled; According to the equipment number of each equipment on the steel coil rolling line, the rolling data on the initial digital steel coil is identified according to the equipment number, and the construction of the digital steel coil is completed; Wherein, according to the data frequency of the aligned rolling data, the data of the initial digital steel coil is down-sampled, comprising: If the aligned rolling data is high-frequency vibration data, the waveform characteristic value is extracted to down-sample the data of the initial digital steel coil; If the aligned rolling data is high-frequency data, the characteristic value is extracted to down-sample the data of the initial digital steel coil; If the aligned rolling data is low-frequency data, the average value is extracted to down-sample the data of the initial digital steel coil.

2. The method of claim 1, wherein, According to the equipment setting of the steel coil rolling line, at least one data acquisition node of the steel coil rolling line is determined, comprising: According to the equipment setting of the steel coil rolling line, each equipment is taken as a data acquisition node to determine the data acquisition node corresponding to each equipment in the steel coil rolling line.

3. The method of claim 1, wherein, The spatial alignment of each group of rolling data with the entity steel coil comprises: The identification of the entity steel coil is obtained, the entity steel coil is length-divided, and the entity steel coil is divided into at least two segments along the length; The corresponding relationship between each group of rolling data and each segment of the entity steel coil is established to complete the spatial alignment.

4. The method of claim 3, wherein, The length division of the entity steel coil comprises: The entity steel coil is length-divided according to 10%, 80% and 10% of the length of the entity steel coil.

5. The method of claim 1, wherein, The time alignment of each group of rolling data with the entity steel coil comprises: The steel entering and leaving time of at least one equipment in each group of rolling data is intercepted; The rolling data corresponding to the steel entering and leaving time of each equipment is obtained; According to the identification of the entity steel coil, the corresponding relationship between the rolling data corresponding to the steel entering and leaving time of each equipment and the entity steel coil is established to complete the time alignment.

6. The method of claim 1, wherein, If the aligned rolling data is high-frequency data, the characteristic value is extracted to down-sample the data of the initial digital steel coil, comprising: If the aligned rolling data is high-frequency data, the maximum value, the minimum value, the variance or the effective value is extracted to down-sample the data of the initial digital steel coil.

7. The method of claim 1, wherein, Before the identification of the rolling data on the initial digital steel coil according to the equipment number of each equipment on the steel coil rolling line, the method further comprises: According to the coding rule of the steel coil rolling line, each equipment on the steel coil rolling line is coded to determine the equipment number of each equipment.

8. The method of claim 1, wherein, The method further comprises: For rolling data generated by non-steel coil rolling line equipment, custom coding is performed, and the rolling data on the initial digital steel coil is identified according to the custom coding.

9. A digital coil building apparatus characterized by, The device comprises: A determination unit is configured to determine at least one data acquisition node of a steel coil rolling line according to equipment settings of the steel coil rolling line, and to acquire rolling data of each data acquisition node; An acquisition unit is configured to acquire an identifier of a physical steel coil, to spatially and temporally align each group of rolling data with the physical steel coil, and to generate an initial digital steel coil; A frequency reduction unit is configured to reduce the data frequency of the initial digital steel coil according to the data frequency of the aligned rolling data, wherein the data frequency of the initial digital steel coil is reduced according to the data frequency of the aligned rolling data, including: if the aligned rolling data of one type is vibration high-frequency data, extracting a waveform characteristic value to reduce the data frequency of the initial digital steel coil; if the aligned rolling data of one type is high-frequency data, extracting a characteristic value to reduce the data frequency of the initial digital steel coil; and if the aligned rolling data of one type is low-frequency data, extracting an average value to reduce the data frequency of the initial digital steel coil; An identification unit is configured to identify the rolling data on the initial digital steel coil according to equipment numbers of each equipment on the steel coil rolling line, and to complete the construction of the digital steel coil.

Images