WO2023181409A1 - Ｓｃａｄａウェブｈｍｉシステム - Google Patents

Ｓｃａｄａウェブｈｍｉシステム Download PDF

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Publication number
WO2023181409A1
WO2023181409A1 PCT/JP2022/014678 JP2022014678W WO2023181409A1 WO 2023181409 A1 WO2023181409 A1 WO 2023181409A1 JP 2022014678 W JP2022014678 W JP 2022014678W WO 2023181409 A1 WO2023181409 A1 WO 2023181409A1
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WO
WIPO (PCT)
Prior art keywords
plc signal
zone
material part
long material
tail end
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2022/014678
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
享治 橋詰
宏之 藤枝
亮 清水
章 野島
伸夫 清水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Mitsubishi Electric Industrial Systems Corp
Original Assignee
Toshiba Mitsubishi Electric Industrial Systems Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Mitsubishi Electric Industrial Systems Corp filed Critical Toshiba Mitsubishi Electric Industrial Systems Corp
Priority to PCT/JP2022/014678 priority Critical patent/WO2023181409A1/ja
Priority to CN202380013060.4A priority patent/CN117769690A/zh
Priority to US18/293,777 priority patent/US20250123609A1/en
Priority to JP2024509173A priority patent/JP7552955B2/ja
Priority to PCT/JP2023/011286 priority patent/WO2023182373A1/ja
Priority to TW112111225A priority patent/TWI853507B/zh
Publication of WO2023181409A1 publication Critical patent/WO2023181409A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Program control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/04—Program control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/054—Input/output
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/24—Pc safety
    • G05B2219/24215—Scada supervisory control and data acquisition

Definitions

  • the present disclosure relates to a SCADA web HMI system.
  • SCADA Supervisory Control And Data Acquisition
  • Social infrastructure systems include steel rolling systems, power transmission and substation systems, water and sewage treatment systems, building management systems, and road systems.
  • SCADA is a type of industrial control system that performs system monitoring and process control using computers. SCADA requires immediate response (real-time performance) that matches the processing performance of the system.
  • SCADA generally consists of the following subsystems.
  • HMI Human Machine Interface
  • the HMI is a mechanism that presents data on a target process (device to be monitored) to an operator and allows the operator to monitor and control the process.
  • Patent Document 1 discloses a SCADA HMI including an HMI screen that operates on a SCADA client.
  • Supervisory Control System collects signal data (PLC signals) on the process and sends control commands (control signals) to the process.
  • PLC signals Signal data
  • the supervisory control system includes a PLC (Programmable Logic Controller) and the like.
  • Remote input/output device (Remote Input Output)
  • the remote input/output device connects to a sensor installed in the process, converts the sensor signal into digital data, and sends the digital data to the supervisory control system.
  • Communication infrastructure The communication infrastructure connects the monitoring control system and remote input/output devices.
  • the hot rolling line includes a rolling mill (rough rolling mill, finishing rolling mill) having a plurality of rolling stands that roll the material to be rolled.
  • a rolling mill rough rolling mill, finishing rolling mill
  • each rolling stand is displayed on the HMI screen, and when a PLC signal is received from the PLC, a binary value (ON or It was displayed as OFF.
  • the actual rolled material is transported from the upstream side to the downstream side of the hot rolling line over time. Therefore, it is desired to track and display the actual tip and tail positions of the rolled material moving within the zone on the HMI screen.
  • the tip and tail positions of the rolled material are estimated and the tracking status is displayed on the HMI screen without waiting for the PLC signal reception cycle. It is hoped that this will be possible.
  • An object of the present invention is to provide a SCADA web HMI system that can correct the tracking display on an HMI screen when receiving a PLC signal.
  • the first aspect relates to SCADA web HMI systems.
  • the SCADA web HMI system receives a PLC signal from the PLC every reception period.
  • the SCADA web HMI system includes at least one processor and a monitor.
  • the processor is configured as follows.
  • the processor includes a first stretchable long material part disposed in a first zone of a conveying table for conveying a long material, and a second stretchable long material part disposed in a second zone adjacent to the first zone.
  • An HMI screen including the long material parts is drawn on the monitor.
  • the first elongated material part and the second elongated material part are drawn at each drawing cycle shorter than the receiving cycle.
  • the processor receives the first PLC signal including the timing at which the leading end of the elongated material enters the first zone and the conveyance speed of the elongated material.
  • a first elongated material part tip position is calculated based on the included conveyance speed and the elapsed time after receiving the first PLC signal.
  • the processor sets the drawing size of the first elongated material part to the length from the entrance side of the first zone to the tip position of the first elongated material part.
  • the drawing size of the first elongated material part is set to the zone length of the first zone. From the time when the processor receives the second PLC signal, the processor performs a second PLC signal based on the transport speed included in the second PLC signal and the elapsed time since receiving the second PLC signal, for each drawing period. Calculate the tip position of the long material part. The processor sets the drawing size of the second elongated material part to the length from the entrance side of the second zone to the tip position of the second elongated material part.
  • the second aspect further has the following features.
  • the processor receives the first intermediate PLC signal including the conveyance speed between receiving the first PLC signal and receiving the second PLC signal
  • the processor By adding a distance based on the transport speed and the elapsed time since receiving the first intermediate PLC signal to the tip position of the first elongated material part when receiving the first intermediate PLC signal, Update the tip position of the long material part.
  • the processor sets the drawing size of the first elongated material part to the length from the entrance side of the first zone to the tip position of the first elongated material part.
  • the third aspect further has the following characteristics in addition to the first or second aspect.
  • the processor receives the third PLC signal including the timing when the tail end of the elongated material enters the first zone and the conveyance speed of the elongated material in each of the drawing periods.
  • the tail end position of the first elongated material part is calculated based on the transport speed included in the above and the elapsed time since receiving the third PLC signal.
  • the processor sets the drawing size of the first elongated material part to the length from the tail end position of the first elongated material part to the exit side of the first zone.
  • the processor receives a fourth PLC signal including the timing at which the tail end of the elongated material enters the second zone and the conveyance speed of the elongated material after receiving the third PLC signal.
  • the processor receives the fourth PLC signal.
  • the drawing size of the first elongated material part is set to length 0.
  • the processor calculates a second value based on the transport speed included in the fourth PLC signal and the elapsed time since receiving the fourth PLC signal, for each drawing period. Calculate the tail end position of the long material part.
  • the processor sets the drawing size of the second elongated material part to the length from the tail end position of the second elongated material part to the exit side of the second zone.
  • the fourth aspect further has the following characteristics in addition to the third aspect.
  • the processor receives a third intermediate PLC signal including the conveyance speed between receiving the third PLC signal and receiving the fourth PLC signal
  • the processor The distance based on the transport speed and the elapsed time after receiving the third intermediate PLC signal is added to the tail end position of the first elongated material part when the third intermediate PLC signal is received.
  • 1 Update the tail end position of the long material part.
  • the processor sets the drawing size of the first elongated material part to the length from the tail end position of the first elongated material part to the exit side of the first zone.
  • the fifth aspect further has the following features in addition to any of the first to fourth aspects.
  • the long material is a material to be rolled by a tandem rolling mill.
  • the first zone and the second zone are respectively between rolling stands of the tandem rolling mill.
  • the sixth aspect further has the following features in addition to any of the first to fifth aspects.
  • the processor is configured to run a web browser.
  • the web browser draws the HMI screen at each drawing cycle.
  • the tip (and tail) position of the rolled material can be tracked with high accuracy on the HMI screen without waiting for the reception period of the PLC signal, and the position of the tip (and tail) of the rolled material can be tracked on the HMI screen when the latest PLC signal is received. Display can be corrected.
  • FIG. 1 is a diagram for explaining the system configuration of SCADA according to an embodiment.
  • FIG. 1 is a block diagram illustrating an overview of functions of a SCADA web HMI system according to an embodiment.
  • FIG. 3 is a diagram for explaining an example of a device list according to an embodiment.
  • FIG. 3 is a diagram for explaining the characteristics of drawing the tip of a long material part arranged on the HMI screen according to the embodiment. It is a figure for demonstrating the characteristic of the tail end drawing of the elongate material part arrange
  • FIG. 3 is a diagram for explaining integration of intra-zone movement distances according to the embodiment.
  • FIG. 2 is a block diagram showing an example of the hardware configuration of an HMI server device and an HMI client device according to an embodiment.
  • FIG. 1 is a diagram for explaining the system configuration of SCADA.
  • SCADA includes a human machine interface (HMI) 1, a programmable logic controller (PLC) 2 as a supervisory control system, a communication device 3 as a communication infrastructure, and an RIO 4 as subsystems.
  • HMI human machine interface
  • PLC programmable logic controller
  • SCADA connects to the monitored device 5 via PLC2 or RIO4.
  • the monitored device 5 is a sensor, an actuator, etc. that constitute a plant to be monitored and controlled.
  • the HMI 1 (SCADA web HMI system) includes a SCADA web HMI server device (hereinafter referred to as HMI server device 10) and at least one SCADA web HMI client device (hereinafter referred to as HMI client device 20).
  • the HMI server device 10 is connected to the PLC 2 and the HMI client device 20 via a computer network.
  • the HMI server device 10 transmits update data (PLC signal) for updating the display state of the HMI screen 22 to the web browser 21 in response to the signal received from the PLC 2. Additionally, the HMI server device 10 receives a control signal from the web browser 21 and transmits it to the PLC 2.
  • PLC signal update data
  • the HMI client device 20 is a thin client that does not include monitoring control logic, and includes at least one monitor 20e (FIG. 10).
  • the HMI client device 20 executes a web browser 21, and the web browser 21 is displayed in full screen on the monitor 20e.
  • the web browser 21 communicates with the HMI server device 10 and draws an HMI screen 22 on which parts displaying the status of the plant are arranged.
  • the HMI screen 22 illustrated in FIG. 2 will be explained.
  • the HMI screen 22 displays the tracking status of the rolled material in the rough rolling section of the hot rolling line.
  • the rough rolling mill shown in FIG. 2 is a tandem rolling mill in which three rolling stands (R1, R2, R3) are arranged in series.
  • the rough rolling mill can roll the material to be rolled in the forward direction (from upstream to downstream) and the reverse direction (from downstream to upstream).
  • the HMI screen 22 includes display parts showing the first rolling stand R1, the second rolling stand R2, the third rolling stand R3, and the conveyance table 6 that conveys the rolled material (long material).
  • the HMI screen 22 includes long material parts (S0, S1, S2, S3) whose display length in the longitudinal direction can be expanded and contracted to indicate the inventory status of the rolled material.
  • S0 is arranged upstream of the first rolling stand R1.
  • S1 is arranged in a section (denoted as a first zone Z1) between the first rolling stand R1 and the second rolling stand R2.
  • S2 is arranged in a section (denoted as second zone Z2) between the second rolling stand R2 and the third rolling stand R3.
  • S3 is located downstream of the third rolling stand.
  • the HMI server device 10 includes a processor 10a that executes various processes, and a memory 10b that stores various information (including programs).
  • the various information includes screen data 13, parts library 14, and device list 15.
  • the processor 10a functions as a PLC signal processing section 11 and a web server processing section 12 by reading various information stored in the memory 10b and executing programs.
  • the PLC signal processing section 11 and the web server processing section 12 can mutually transmit and receive data through inter-process communication.
  • the screen data 13 is vector data defined for each HMI screen 22.
  • vector data is data in Scalable Vector Graphics (SVG) format.
  • SVG data includes part names, shapes, positions, colors, and sizes of parts placed on the HMI screen 22 as attributes of SVG elements.
  • the screen data 13 includes a screen name.
  • the screen data 13 of the HMI screen 22 shown in FIG. include.
  • the parts library 14 includes a set of scripts that describe operations for each type of parts placed on the HMI screen 22.
  • the script is a JavaScript (registered trademark) program defined for each part type.
  • the script can be executed on each web browser 21 with parameter values given as needed.
  • the script for long material parts (S0, S1, S2, S3) includes the value of the inventory flag included in the PLC signal, the value of the tip inventory flag, the value of the tail inventory flag, the transport speed reference value, The drawing size (display length, display position) of the long material part is output using the reception time of the PLC signal as an input value.
  • the inventory flag is ON when a part of the material to be rolled exists within the zone.
  • the tip presence flag is ON when the tip of the material to be rolled exists within the zone.
  • the tail end stock flag is ON when the tail end of the material to be rolled exists within the zone.
  • the values of the stock flag, the tip stock flag, and the tail stock flag are calculated by the PLC 2 based on the sensor values of the rolling load sensor of the rolling stand and the sensor values of a laser sensor placed near the rolling stand.
  • the conveyance speed reference value is the conveyance speed of the rolled material calculated by the PLC 2 based on the work roll rotation speed and work roll diameter of the rolling stand.
  • the device list 15 is data defined for each HMI screen 22, and is, for example, data in Comma-Separated Values (CSV) format.
  • the device list 15 is data that associates item names linked to parts arranged on the HMI screen 22 and communication addresses of PLCs. Item names and communication addresses are unique in the system.
  • FIG. 3 is a diagram showing a part of the device list 15 related to the HMI screen 22 shown in FIG. 2.
  • "G100” is a screen number.
  • the part name of the first long material part S1, which displays the stock status in the first zone Z1 arranged in "G100”, is "G100_1SLAB”.
  • Four tracking items are set in the first long material part S1.
  • the item names are "G100_1SLAB_M”, “G100_1SLAB_HE”, “G100_1SLAB_TE”, and “G100_1SLAB_SRF", respectively.
  • “G100_1SLAB_M” is an inventory flag for the first zone Z1, and the data type is Boolean.
  • G100_1SLAB_HE is the leading stock flag of the first zone Z1, and the data type is Boolean.
  • G100_1SLAB_TE is the tail end inventory flag of the first zone Z1, and the data type is Boolean.
  • G100_1SLAB_SRF is the transport speed reference for the first zone Z1, and the data type is a real number type.
  • the part name of the second long material part S2 that displays the stock status in the second zone Z2 located in "G100” is "G100_2SLAB".
  • Four tracking items are set in the second long material part S2.
  • the item names are "G100_2SLAB_M”, “G100_2SLAB_HE”, “G100_2SLAB_TE”, and "G100_2SLAB_SRF", respectively.
  • “G100_2SLAB_M” is an inventory flag for the second zone Z2, and the data type is Boolean.
  • “G100_2SLAB_HE” is the leading stock flag of the second zone Z2, and the data type is Boolean.
  • G100_2SLAB_TE is the tail end inventory flag of the second zone Z2, and the data type is Boolean.
  • G100_2SLAB_SRF is the transport speed reference for the second zone Z2, and the data type is a real number type.
  • the PLC signal processing section 11 periodically receives a PLC signal from the PLC 2 based on the communication address included in the device list 15 and transmits it to the web server processing section 12 .
  • the reception cycle of the PLC signal is a low cycle (approximately 200 to 1000 msec). Further, the PLC signal processing unit 11 transmits the control signal received from the web server processing unit 12 to the PLC 2.
  • the web server processing unit 12 can communicate with the web browser 21 (web browser processing unit 31) of the HMI client device 20 using HTTP (Hypertext Transfer Protocol), HTTPS (Hypertext Transfer Protocol Secure), and WebSocket.
  • the web server processing unit 12 generates content for each HMI screen based on screen data 13 (SVG file) for each HMI screen, a parts library 14 that describes operations for each part type, and a device list 15.
  • the content includes an HTML file, screen data 13 (SVG file), and parts library 14.
  • the web server processing unit 12 transmits content in response to a request from the web browser 21 (web browser processing unit 31).
  • the web server processing section 12 receives the PLC signal from the PLC signal processing section 11. Based on the device list 15, the web server processing unit 12 sends the PLC signal (value of the item name corresponding to the PLC signal) to the web browser 21 displaying the HMI screen 22 having the item name corresponding to the received PLC signal. ) to send.
  • the HMI client device 20 includes a processing circuit 30 (including a processor 20a that executes various processes and a memory 20b that stores various information (including programs) shown in FIG. 10, which will be described later), and a monitor 20e.
  • the processor 20a functions as a web browser processing unit 31 by reading various information stored in the memory 20b and executing programs.
  • the web browser processing unit 31 is executed for each web browser 21.
  • the web browser 21 draws an HMI screen 22 for monitoring and controlling an industrial plant.
  • a plurality of parts are arranged on the HMI screen 22.
  • the parts include, for example, operation parts for transmitting control signals to the PLC 2 in response to operator operations, display parts whose display status (numbers, characters, colors, shapes) changes depending on received PLC signals, etc. .
  • the web browser processing unit 31 receives the above-mentioned content (HTML file, screen data 13, parts library 14) from the web server processing unit 12, and stores it in the memory 20b. Based on the content, the web browser 21 draws an HMI screen 22 on which parts are arranged.
  • HTML file HTML file, screen data 13, parts library 14
  • the web browser processing unit 31 executes a script for each part type included in the above-mentioned parts library 14 according to the part type of the parts arranged on the HMI screen 22.
  • scripts for long material parts S0, S1, S2, S3 will be described.
  • the script for the long material part changes the drawing size of the long material part in accordance with input values based on the received PLC signal (the values of the four tracking items described above and the reception time of the PLC signal).
  • FIG. 4 shows the state of the first long material part S1 after receiving the first PLC signal including the timing when the tip of the material to be rolled enters the first zone Z1 and the reference conveyance speed value of the material to be rolled.
  • FIG. 3 is a diagram for explaining continuous drawing.
  • the web browser processing unit 31 From the time when the first PLC signal is received, the web browser processing unit 31 performs the first Calculate the tip position H1 of the long material part.
  • the web browser processing unit 31 sets the drawing size of the first elongated material part S1 to the length from the entrance side of the first zone Z1 to the first elongated material part tip position H1.
  • the web browser processing unit 31 draws the range from the entry side of the first zone Z1 to the first long material part tip position H1 for the first long material part S1 in a lighting color, and The range from H1 to the exit side of the first zone Z1 is drawn in an unlit color.
  • the PLC signal is received at a low cycle (200 to 1000 msec), and each time a drawing cycle arrives without waiting for the next PLC signal, the tip of the first long material part S1 is moved to the first zone. It is possible to advance toward the exit side of Z1, and the tracking status of the rolled material can be displayed smoothly.
  • the second PLC signal includes the timing when the leading end of the rolled material enters the second zone Z2 after receiving the first PLC signal and the reference value of the conveyance speed of the rolled material.
  • the first elongated material part tip position H1 does not reach the second zone Z2 when the first elongated material part tip position H1 is received.
  • the tip position of the first long material part S1 drawn on the HMI screen 22 has not caught up with the tip position of the actual rolled material.
  • the web browser processing unit 31 immediately sets the drawing size (display length) of the first long material part S1 to the zone length (100%) of the first zone ((C) in FIG. 4).
  • the web browser processing unit 31 draws the range of the first long material part S1 from the entrance side of the first zone Z1 to the first long material part tip position H1 (the exit side of the first zone Z1) in a lighting color. .
  • the tip position of the first long material part S1 drawn on the HMI screen 22 can be made to catch up with the tip position of the actual rolled material.
  • the web browser processing unit 31 updates the transport speed reference value included in the second PLC signal and the second PLC signal for each drawing cycle from the time when the second PLC signal is received.
  • the second elongated material part tip position H2 is calculated based on the elapsed time since receiving the elapsed time.
  • the web browser processing unit 31 sets the drawing size of the second long material part S2 to the length from the entrance side of the second zone Z2 to the second long material part tip position H2.
  • the web browser processing unit 31 draws the range from the entrance side of the second zone Z2 to the second long material part tip position H2 in a lighting color for the second long material part S2, and draws the range from the entrance side of the second zone Z2 to the second long material part tip position H2, and The range from the position H2 to the exit side of the second zone Z2 is drawn in an unlit color.
  • the PLC signal is received at low cycles, and each time a drawing cycle arrives without waiting for the next PLC signal, the tip of the second long material part S2 is moved to the exit side of the second zone Z2.
  • the tracking status of the rolled material can be displayed smoothly.
  • FIG. 5 shows the first long material part S1 after receiving the third PLC signal including the timing when the tail end of the material to be rolled enters the first zone Z1 and the reference conveyance speed value of the material to be rolled.
  • FIG. 3 is a diagram for explaining continuous drawing.
  • the web browser processing unit 31 performs the first Calculate the tail end position T1 of the long material part.
  • the web browser processing unit 31 sets the drawing size of the first elongated material part S1 to the length from the first elongated material part tail end position T1 to the exit side of the first zone Z1.
  • the web browser processing unit 31 draws the range from the entrance side of the first zone Z1 to the tail end position T1 of the first long material part S1 in an unlit color, and The range from the tail end position T1 to the exit side of the first zone Z1 is drawn in a lighting color.
  • the PLC signal is received at low cycles, and each time a drawing cycle arrives without waiting for the next PLC signal, the tail end of the first long material part S1 is moved to the exit side of the first zone Z1.
  • the tracking status of the rolled material can be displayed smoothly.
  • the fourth PLC includes the timing when the tail end of the rolled material enters the second zone Z2 after receiving the third PLC signal and the reference value of the conveyance speed of the rolled material.
  • the first elongated material part tail end position T1 may not have reached the second zone Z2. In this case, the tail end position of the first long material part S1 drawn on the HMI screen 22 has not caught up with the tail end position of the actual rolled material.
  • the web browser processing unit 31 immediately sets the drawing size (display length) of the first long material part S1 to length 0 ((C) in FIG. 5).
  • the web browser processing unit 31 draws the range from the entrance side to the exit side of the first zone Z1 in the unlit color for the first elongated material part S1.
  • the tail end position of the first long material part S1 drawn on the HMI screen 22 can be made to catch up with the tail end position of the actual rolled material.
  • the web browser processing unit 31 updates the transport speed reference value included in the fourth PLC signal and the fourth PLC signal for each drawing cycle from the time when the fourth PLC signal is received.
  • the tail end position T2 of the second elongated material part is calculated based on the elapsed time since receiving the elapsed time.
  • the web browser processing unit 31 sets the drawing size of the second elongated material part S2 to the length from the second elongated material part tail end position T2 to the exit side of the second zone Z2.
  • the web browser processing unit 31 draws the range from the entry side of the second zone Z2 to the tail end position T2 of the second long material part S2 in an unlit color, and draws the range from the entrance side of the second zone Z2 to the second long material part tail end position T2, and The range from the tail end position T2 to the exit side of the second zone Z2 is drawn in a lighting color.
  • the PLC signal is received at low cycles, and each time a drawing cycle arrives without waiting for the PLC signal, the tail end of the second long material part S2 is directed toward the exit side of the second zone Z2.
  • the tracking display of the rolled material can be expressed smoothly.
  • the first PLC signal (or third PLC signal) including the timing when the leading end (or tail end) of the material to be rolled enters the first zone Z1 is received.
  • the PLC signal that can be received until the second PLC signal is received, which includes the timing at which the leading end (or tail end) of the rolled material enters the second zone Z2 (exits the first zone Z1).
  • a plurality of PLC signals (referred to as intermediate PLC signals) may be received between when the first PLC signal is received and when the second PLC signal is received.
  • the intermediate PLC signal is a PLC signal that has a different transport speed reference value from the first PLC signal (or third PLC signal).
  • the web browser processing unit 31 integrates the moving distance within the zone of the tip (or tail end) of the rolled material, taking into account the latest conveyance speed reference value included in the intermediate PLC signal, and Calculate the position of the tip (or tail) of a timber part.
  • the web browser processing unit 31 receives the first intermediate PLC signal including the transport speed reference value between receiving the first PLC signal and receiving the second PLC signal.
  • the distance based on the conveyance speed reference value included in the first intermediate PLC signal and the elapsed time after receiving the first intermediate PLC signal is calculated as the first elongated distance when the first intermediate PLC signal is received.
  • the first elongated material part tip position H1 is updated.
  • the web browser processing unit 31 sets the drawing size of the first elongated material part S1 to the length from the entrance side of the first zone Z1 to the first elongated material part tip position H1.
  • the web browser processing unit 31 when the web browser processing unit 31 receives the third intermediate PLC signal including the transport speed reference value between receiving the third PLC signal and receiving the fourth PLC signal, the web browser processing unit 31 outputs the third intermediate PLC signal. Add the distance based on the transport speed reference value included in the reference value and the elapsed time since receiving the third intermediate PLC signal to the tail end position T1 of the first long material part when the third intermediate PLC signal is received. As a result, the tail end position T1 of the first long material part is updated. The web browser processing unit 31 sets the drawing size of the first elongated material part S1 to the length from the first elongated material part tail end position T1 to the exit side of the first zone Z1.
  • FIG. 6 is a diagram for explaining the integration of the intra-zone movement distance in the micro-tracking zone.
  • n is the number of speed changes
  • t(n) is time
  • t(0) is the tip (tail) inventory ON time [sec]
  • t(N+1) is the tip (tail) inventory OFF time [sec].
  • sec] v(n) is the transport speed reference value [m/sec].
  • the PLC signal is received n times before the leading end (tail end) passes through the first zone Z1.
  • the transport speed reference value can be changed in each PLC signal.
  • the intra-zone movement distance P(N) [m] is expressed by the following equation (1).
  • FIG. 7 is a diagram showing the tip position and tail end position of the elongated material part based on the intra-zone movement distance P(N).
  • FIG. 7A is a diagram showing the tip movement distance P HEAD (t) of the long material part calculated using equation (1).
  • FIG. 7B is a diagram showing the tail end movement distance P TAIL (t) of the long material part calculated using equation (1).
  • (C) of FIG. 7 is a diagram showing the tip movement distance P HEAD (t) and the tail end movement distance P TAIL (t) of the long material part calculated using equation (1).
  • the ratio of the display length to the maximum length (zone length L [m]) of the elongated material part in (C) of FIG. 7 is expressed by the following equation (2).
  • the drawing process for long material parts according to this embodiment will be described with reference to the flowcharts shown in FIGS. 8 and 9.
  • the process shown in the flowchart is executed for each long material part in each zone every drawing cycle.
  • the drawing cycle is usually sufficiently shorter than the PLC reception cycle, but the drawing cycle is not constant because it changes depending on the load status of the browser.
  • step S100 the web browser processing unit 31 determines whether the inventory flag included in the latest received PLC signal is ON or OFF.
  • the inventory flag is ON when a part of the material to be rolled exists within the zone. If the inventory flag is ON, the process of step S110 is executed. If the inventory flag is OFF, the process of step S310 is executed.
  • the inventory flag is "G100_1SLAB_M" in the first zone Z1 and "G100_2SLAB_M" in the second zone Z2 (FIG. 3).
  • step S110 the web browser processing unit 31 determines whether the tip inventory flag included in the latest PLC signal is ON or OFF.
  • the tip stock flag is ON when the tip of the material to be rolled exists within the zone. If the leading end inventory flag is ON, the process of step S120 is executed. If the tip inventory flag is OFF, the tip position is set to 100% in step S125, and then the process of step S160 is executed.
  • step S120 the web browser processing unit 31 determines whether the tip inventory flag is switched from OFF to ON by the latest PLC signal, and the conveyance speed reference value included in the PLC signal is a negative value. .
  • the conveyance speed reference value is a negative value, reverse rolling is being performed, and the material to be rolled is being rolled from the downstream side to the upstream side of the rolling line. If the determination condition of step S120 is satisfied, the process of step S130 is executed. If the determination condition is not satisfied, the tip start position is set to 0% in step S135, and then the process of step S140 is executed.
  • step S120 If the judgment condition in step S120 is satisfied, that is, if the tip of the material to be rolled enters the zone from the downstream side of the rolling line during reverse rolling, in step S130, the starting position of the tip of the zone is the maximum of the long material part.
  • the length (zone length) is set to 100%. After that, the process of step S140 is executed.
  • step S140 the web browser processing unit 31 integrates the conveyance speed reference value x time based on each PLC signal received since the tip inventory flag was switched to ON, and moves the tip of the long material part. Calculate the distance (Equation (1)).
  • step S150 the web browser processing unit 31 calculates the tip position of the long material part from the tip start position and the tip movement distance.
  • the first elongated material part tip position H1 in the first zone Z1 shown in FIG. 4 is calculated.
  • step S160 the web browser processing unit 31 draws only the area from the tail end position to the leading end position of the long material part on the HMI screen 22 in a lighting color ((C) in FIG. 7). For example, in a zone where the tip of the material to be rolled is stocked, the area from the entry side of the zone to the tip of the long material part is drawn in a lit color ((A) in FIG. 7). In the zone where the tail end of the material to be rolled is stocked, the area from the tail end position of the long material part to the exit side of the zone is drawn in a lit color ((B) in FIG. 7).
  • the area from the entry side to the exit side of the zone is displayed in a lit color.
  • the area from the entry side to the exit side of the zone is displayed in an unlit color.
  • step S310 the web browser processing unit 31 resets the leading end position and tail end position of the long material part in the zone where the inventory flag is OFF to 0%. Thereafter, the process of step S160 described above is executed.
  • step S100 the process of step S210 shown in FIG. 9 is executed.
  • step S210 the web browser processing unit 31 determines whether the tail end inventory flag included in the latest PLC signal is ON or OFF.
  • the tail end inventory flag is ON when the tail end of the material to be rolled exists within the zone. If the tail end inventory flag is ON, the process of step S220 is executed. If the tail end inventory flag is OFF, the tail end position is set to 100% in step S225, and then the routine returns to FIG. 8.
  • step S220 the web browser processing unit 31 determines whether the tail end inventory flag included in the latest PLC signal has been switched from OFF to ON, and whether the conveyance speed reference value included in the PLC signal is a negative value. Determine. When the conveyance speed reference value is a negative value, reverse rolling is being performed, and the material to be rolled is being rolled from the downstream side to the upstream side of the rolling line. If the determination condition of step S220 is satisfied, the process of step S230 is executed. If the determination condition is not satisfied, the tail end start position is set to 0% in step S235, and then the process of step S240 is executed.
  • step S230 If the determination condition in step S220 is satisfied, that is, if the tail end of the rolled material enters the zone from the downstream side of the rolling line during reverse rolling, in step S230, the starting position of the tail end of the zone is the part of the long material. is set to 100% of the maximum length (zone length). After that, the process of step S240 is executed.
  • step S240 the web browser processing unit 31 integrates the conveyance speed reference value x time based on each PLC signal received from the time when the tail end inventory flag was turned ON until now, and calculates the tail end of the long material part.
  • the end movement distance is calculated (Equation (1)).
  • step S250 the web browser processing unit 31 calculates the tail end position of the long material part from the tail end start position and the tail end movement distance.
  • the first long material part tail end position T1 in the first zone Z1 shown in FIG. 5 is calculated. Thereafter, the process returns to the routine of FIG.
  • the tip (and tail) position of the rolled material is estimated and the position of the tip (and tail end) of the rolled material is Change the drawing size of parts.
  • the tip (and tail) position of the material to be rolled can be accurately tracked on the HMI screen without waiting for the PLC signal reception period. Furthermore, when the latest PLC signal is received, the tracking display on the HMI screen can be corrected.
  • rolled materials such as slabs and strips are exemplified as specific examples of long material parts, but the shapes may be rod-like, linear, sheet-like, etc.
  • the material may be resin, paper, or the like.
  • the zone is not limited to between rolling stands of a rough rolling mill, but may be between rolling stands of a finishing rolling mill, between rolls of a looper, or the like. Moreover, it is not limited to a rolling line.
  • the SCADA web HMI system is divided into the HMI server device 10 and the HMI client device 20, but the system configuration is not limited to this.
  • it may be configured with a single device that functions as both a server function and a client function.
  • the HMI screen 22 is drawn on the web browser 21, but the HMI screen 22 may be drawn on the monitor 20e without going through the web browser 21.
  • the parts displayed on the HMI screen 22 are drawn in 2D, but they may be drawn in 3D.
  • a 3D-shaped block is displayed in the area of the lit color, instead of being filled with the lit color and unlit color as described here.
  • FIG. 10 is a block diagram showing a hardware configuration example of the HMI server device 10 and the HMI client device 20.
  • Each process of the HMI server device 10 described above is realized by a processing circuit.
  • the processing circuit is configured by connecting a processor 10a, a memory 10b, and a network interface 10c.
  • the processor 10a implements each function of the HMI server device 10 by executing various programs stored in the memory 10b.
  • Memory 10b includes a main storage device and an auxiliary storage device.
  • the memory 10b stores the above-described screen data 13, parts library 14, and device list 15 in advance.
  • the network interface 10c is a device that connects to the PLC 2 and the HMI client device 20 via a computer network and is capable of transmitting and receiving PLC signals and control signals.
  • Each process of the HMI client device 20 described above is realized by a processing circuit.
  • the processing circuit is configured by connecting a processor 20a, a memory 20b, a network interface 20c, an input interface 20d, and at least one monitor 20e.
  • the processor 20a implements each function of the HMI client device 20 by executing various programs stored in the memory 20b.
  • Memory 10b includes a main storage device and an auxiliary storage device.
  • the network interface 20c is a device that is connected to the HMI server device 10 via a computer network and is capable of transmitting and receiving PLC signals and control signals.
  • the input interface 20d is an input device such as a keyboard, mouse, or touch panel.
  • a plurality of monitors 20e may be provided.
  • the HMI client device 20 may be a mobile terminal such as a tablet.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • General Factory Administration (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Programmable Controllers (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Control Of Conveyors (AREA)
PCT/JP2022/014678 2022-03-25 2022-03-25 Ｓｃａｄａウェブｈｍｉシステム Ceased WO2023181409A1 (ja)

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CN202380013060.4A CN117769690A (zh) 2022-03-25 2023-03-22 Scada网页hmi系统
US18/293,777 US20250123609A1 (en) 2022-03-25 2023-03-22 Scada web hmi system
JP2024509173A JP7552955B2 (ja) 2022-03-25 2023-03-22 Ｓｃａｄａウェブｈｍｉシステム
PCT/JP2023/011286 WO2023182373A1 (ja) 2022-03-25 2023-03-22 Ｓｃａｄａウェブｈｍｉシステム
TW112111225A TWI853507B (zh) 2022-03-25 2023-03-24 Scada web hmi 系統

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