Measuring device and method

Abstract

To enable easy measurement of the cross-sectional size of a hot material.SOLUTION: A measuring method measures a steel material 200 rolled by a blooming mill 105 installed in a line of a hot rolling process, and includes a step of irradiating light onto a measurement target within a predetermined plane and using sensors that receive reflected light and detect a part of a contour of the target within the plane to detect a part of the contour of the steel material 200 with the sensors that are arranged within the plane crossing the steel material 200 conveyed along the line, and a step of combining the parts of the contour of the steel material 200 measured by the sensors to form at least a part of the contour of the steel material 200.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a measuring method and device for measuring the size of a steel material to be rolled in a blooming mill, the size of a steel material before and after hot scarfing, and the size of a steel material after finish rolling. [Background technology]

[0002] Conventionally, hot steel rolling plants use blooming mills that roll hot materials such as slabs, blooms, and billets, which are supplied from continuous casting equipment or heated in a heating furnace, to a predetermined size (see Patent Document 1). Regarding the size of the hot material, a technology has been provided in which the hot material is irradiated with a laser beam, the excited light is analyzed, and the crop size is specified (Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 61-67501 [Patent Document 2] Japanese Patent Application Publication No. 57-112925 Summary of the Invention [Problem to be solved by the invention]

[0004] However, because hot materials are red-hot at high temperatures, it is difficult to measure the cross-sectional size. For example, the technology described in Patent Document 2 requires a high-output laser light source to excite the hot material with laser light and to emit light, and a spectrometer to separate the excitation light from the radiant light of the hot material.

[0005] The present invention has been proposed in view of the above-mentioned circumstances, and aims to provide a measuring device and method that can easily measure the cross-sectional size of a hot material being transported in a hot rolling process. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the measurement method of the present invention is a measurement method for measuring steel material being rolled by a machine installed on a line of a hot rolling process, and includes a step of irradiating light onto the object to be measured within a predetermined plane, using sensors that detect the contour of a portion of the object within the plane that receives the reflected light, and detecting the contour of a portion of the steel material with multiple sensors arranged in a plane that crosses the steel material being transported on the line, and a step of combining the contours of the portions of the steel material measured by each sensor to obtain at least a portion of the contour of the steel material.

[0007] The sensor may irradiate the object to be measured with a blue laser light. The method may further include measuring a size of the steel material based on at least a portion of the outline of the steel material. The size may include a width and a height of the steel material. The method may further include determining whether the size of the steel material is within a predetermined range.

[0008] The method may further include a step of determining whether or not there is a flaw in the steel material based on at least a portion of the outline of the steel material. The method may further include a step of calculating a weight of the steel material based on at least a portion of the outline of the steel material. The method may further include a step of detecting whether or not the shape of the steel material is the same as a normal rolled shape based on at least a portion of the outline of the steel material.

[0009] The machine may be a blooming mill including: rolls that press down and roll the steel material; a roller table that supports the steel material and transports it toward the rolls; and a manipulator that moves the steel material supported on the roller table in a direction intersecting the transport direction of the roller table. The multiple sensors may be arranged downstream of the blooming mill in the line. The multiple sensors may be arranged at least one of upstream and downstream of the hot scarf in the line. The multiple sensors may be arranged downstream of the finishing rolling equipment in the line.

[0010] The measuring device according to this application is a measuring device for measuring steel material being rolled by a machine installed on a line of a hot rolling process, and includes a plurality of sensors that irradiate the object to be measured with light within a predetermined plane and detect the outline of a portion of the object within the plane that receives the reflected light, the sensors being arranged in a plane that intersects the steel material being transported on the line, and a digital signal processing device that combines the outlines of the portions of the steel material measured by each sensor to obtain at least a portion of the outline of the steel material. The digital signal processing device may measure the size of the steel material based on at least a portion of the outline of the steel material.

[0011] The machine may be a blooming mill and include rolls that press down and roll the steel material, a roller table that supports the steel material and transports it toward the rolls, and a manipulator that moves the steel material supported on the roller table in a direction that intersects with the transport direction of the roller table. [Effects of the Invention]

[0012] The measuring method and apparatus according to the present invention make it possible to easily measure the cross-sectional size of a hot material being transported in a hot rolling process, thereby reducing the burden of measuring the hot material and enabling highly accurate processing of the hot material. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a hot rolling factory. [Figure 2] FIG. 1 is a plan view of a blooming mill. [Figure 3] FIG. 1 is a front view of a blooming mill. [Figure 4] FIG. 1 shows an arrangement of light section sensors mounted around the line near the blooming mill. [Figure 5] FIG. 1 is a diagram showing the configuration of a measurement device using a light-section method. [Figure 6] 10 is a graph showing data detected by a light-section method sensor. [Figure 7] FIG. 1 is a diagram showing the configuration of an in-house network of a hot rolling mill. [Figure 8] FIG. 4 is a diagram illustrating the operation of the control device. [Figure 9] FIG. 2 is a diagram showing the configuration of an operation data collection device. [Figure 10] FIG. 2 is a diagram showing the process of data collection in the operation data collection device. [Figure 11] FIG. 10 is a diagram showing a virtual image generated by the data visualization device. DETAILED DESCRIPTION OF THE INVENTION

[0014] (Hot Rolling Mill) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing the schematic configuration of a hot steel rolling mill. The hot rolling mill premises include an operation floor 100 where hot rolling processing is performed and an office 130. This hot rolling mill is also called a blooming mill, as it heats supplied steel ingots, processes them into billets of appropriate size using a blooming mill, and then rolls them. These steel ingots or billets are sometimes called hot materials, but will be referred to as steel materials hereinafter.

[0015] On the operation floor 100 of the hot rolling mill, a preheating furnace 101, a recuperator 102, a scale breaker 103, a blooming mill 105, a hot scarf 106, a large shear 107, an intermediate rolling mill 108, a finishing mill 109, a hot saw 110, and a rotary cooling furnace 111 are installed in this order along the line along which the steel material is transported. A soaking furnace 104 is installed between the scale breaker 103 and the blooming mill 105, away from the line. The steel material 200 may be moved between the line and the soaking furnace 104 by a crane (not shown).

[0016] An operator's room 115 for operating the blooming mill 105 is located immediately above the line upstream of the blooming mill 105. Near the blooming mill 105 are located an electrical room 116 in which auxiliary equipment for the blooming mill 105 is installed, and multiple access points 117 for wireless communication with equipment monitoring the blooming mill 105. In addition, the operation floor 100 is provided with a server room 120 that manages the in-house network within the operation floor 100. The server room 120 and the office 130 are connected via the in-house network.

[0017] (Bulking mill) 2 and 3 are diagrams showing the blooming mill 105. Fig. 2 is a plan view of the blooming mill 105, and Fig. 3 is a front view of the blooming mill 105.

[0018] Referring to Figure 3, the rolling mechanism 10 of the blooming mill 105 has a set of rolling rolls consisting of a bottom roll 11 and a top roll 12. The bottom roll 11 and the top roll 12 are supported by a set of columnar members, the tops of which are connected by a connecting member. The bottom roll 11 and the top roll 12 sandwich and transport the steel material 200, while the top roll 12 rolls the steel material 200 by reducing it. The bottom roll 11 and the top roll 12 are formed with parallel groove-like calibers, each with a predetermined width and depth, extending circumferentially, at corresponding positions in the axial direction so that the steel material 200 can be rolled to a predetermined width. The amount of reduction of the top roll 12 is displayed on a dial gauge 10a attached to the top of the rolling mechanism 10.

[0019] 2, at the front side of the rolling mechanism 10, which is on the upstream side of the line relative to the blooming mill 105, there are provided, in order of proceeding upstream along the line, a front feed roller 13, a first front roller table 15, and a second front roller table 16. At the rear side of the rolling mechanism 10, which is on the downstream side of the line relative to the blooming mill 105, there are provided, in order of proceeding downstream along the line, a first rear feed roller 14, a first rear roller table 17, and a second rear roller table 18. The first front roller table 15, the second front roller table 16, the first rear roller table 17, and the second rear roller table 18 support the steel material 200 and can transport the steel material 200 in the upstream or downstream direction of the line.

[0020] Provided above the first front roller table 15 are a front workside manipulator 21 that extends from the workside and pushes the steel material 200 supported on the first front roller table 15 toward the drive side, and a front driveside manipulator 22 that extends from the drive side and pushes the steel material 200 supported on the first front roller table 15 toward the workside. Here, the driveside is the side on which a drive unit is installed with respect to the line center of the blooming mill 105, and is the upper side in the drawing. The workside is the operator's side with respect to the line center of the blooming mill 105, and is the lower side in the drawing. The front workside manipulator 21 and the front driveside manipulator 22 face each other above the first front roller table 15 and are each driven by a motor 29 in a direction crossing the line.

[0021] The front work side manipulator 21 is provided with a hook 21a for turning the steel material 200 supported by the first front roller table 15. This hook 21a is driven by a motor 29, and constitutes a turning means for turning the steel material 200 around the axis of the extension of the line by hooking onto a corner of the steel material 200 extending in the line direction and lifting it up, thereby changing the direction of down-stressing.

[0022] Provided above the first rear roller table 17 are a rear workside manipulator 23 that extends from the workside and pushes the steel material 200 supported on the first rear roller table 17 to move it toward the drive side, and a rear driveside manipulator 24 that extends from the drive side and pushes the steel material 200 supported on the first rear roller table 17 to move it toward the workside. The rear workside manipulator 23 and the rear driveside manipulator 24 face each other above the first rear roller table 17, and are each driven by a motor 29 in a direction crossing the line.

[0023] (Measuring equipment) FIG. 4 shows the arrangement of light-section sensors attached around the line near the blooming mill 105. The light-section sensor is composed of a pair of sensors, a first sensor 41 and a second sensor 42, and is attached to the rear side of the blooming mill 105, in the gap between the first rear roller table 17 and the second rear roller table 18. For example, the first sensor 41 is arranged at the top of the line, and the second sensor 42 is arranged at the bottom of the line. The first sensor 41 and the second sensor 42 irradiate light from above and below, respectively, onto the steel material 200 passing between the first rear roller table 17 and the second rear roller table 18, and detect the light reflected from the steel material 200. The first sensor 41 and the second sensor 42 may be arranged diagonally across the steel material 200, which has a rectangular cross section.

[0024] The first sensor 41 and the second sensor 42 may have a measurement reference distance of 1000 mm or more to reduce the influence of radiant heat from the steel material 200, a measurement point field of view width of 630 mm or more to accommodate the maximum finished size of the steel material 200, which is 440 mm wide, a blue laser with a wavelength of, for example, 405 nm may be used as the light source to ensure detection of the steel material 200, which is a hot material, and repeatability may be 70.7 μm or less so that the measurement error on one side of the steel material is 0.1 mm or less. Note that the sensor for the light cutting method is not limited to a pair of sensors, the first sensor 41 and the second sensor 42, and may be configured with one sensor or three or more sensors.

[0025] 5 is a diagram showing the configuration of a measuring device 40 using the light-section method. The measuring device 40 using the light-section device has a first sensor 41 and a second sensor 42, a measuring device main body 43 which serves as a digital signal processing device, and a power supply device 44. In the measuring device 40, data detected by the first sensor 41 and the second sensor 42 is sent to the measuring device main body 43 via a signal line, and the measuring device main body 43 detects the dimensions of the steel material 200, such as the outline, cross-sectional width, and height. A 24V power supply is supplied to the measuring device main body 43 from the power supply device 44, and power is supplied to the first sensor 41 and the second sensor 42 from the measuring device main body 43 via a power line.

[0026] The measuring device 40 is also connected to a setting PC 45 and a programmable logic controller (PLC) 47 that controls the blooming mill 105. The setting PC 45 is used to set conditions for the measuring device 40 to measure the steel product 200 using the light-section method. For example, the setting PC 45 can set the repeatability of measurements by the first sensor 41 and the second sensor 42. The setting PC 45 may also display the outline and size of the steel product 200 measured by the measuring device main body 43. The PLC 47 controls the blooming mill 105 based on the size of the steel product 200 measured by the measuring device 40, for example. The measuring device main body 43, power supply unit 44, and setting PC 45 of the measuring device 40 are installed in the electrical room 116 on the operation floor 100, and the PLC 47 is installed in the control room 115.

[0027] FIG. 6 is a graph showing data detected by the light-section method. This graph was created by the measuring device main body 43 based on data detected by the first sensor 41 and the second sensor 42 of the measuring device 40. The steel material 200 to be measured is a hot material at 900°C. As shown in the graph of FIG. 6, the rectangular outline of the steel material 200 is displayed, and the cross-sectional size of the steel material 200 is measured. Such a graph may be displayed on the setting PC 45.

[0028] The measuring device 40 may determine whether or not there is a flaw in the steel material 200 based on the contour shape of the steel material 200. The measuring device 40 may also calculate the weight of the steel material 200 based on the contour shape and cross-sectional size of the steel material 200. Furthermore, based on the contour shape and cross-sectional size of the steel material 200, the measuring device 40 may determine whether the shape of the steel material 200 is the same as a normal rolled shape, or whether the cross-sectional size is within a predetermined threshold. For example, a crop of the steel material 200 may be identified. Here, the crop refers to the leading and trailing ends of the steel material 200 that are cut off before finishing.

[0029] Although the measuring device 40 is described as being installed behind the blooming mill 105, i.e., downstream of the blooming mill in the line, the present invention is not limited to this. The measuring device may be installed at least either upstream or downstream of the hot scarf, or downstream of the finishing rolling facility.

[0030] The measuring device 40 can measure the size of the steel material 200, which is a hot material, by an optical cutting method. The size of the steel material 200 can be measured quickly and with high accuracy, and the amount of equipment constituting the measuring device can be reduced.

[0031] (In-house network) Figure 7 shows the configuration of the on-site network of a hot rolling mill. Around the blooming mill 105 on the operating floor 100, a universal serial bus (USB) camera 61, a network camera 62, and other devices are installed to photograph the instruments of the blooming mill 105. In addition, a thermal camera 63 is also installed to photograph the entire blooming mill 105 in order to monitor heat-generating parts of machinery such as the motor 29 in the blooming mill 105.

[0032] Image data of the blooming mill 105 instruments captured by the USB camera 61 and network camera 62 is sent to the one-board PC 64, where it is converted into values ​​indicated by the instruments through predetermined image processing. Infrared images of the blooming mill 105 captured by the thermal camera 63 are converted into temperature distribution by the one-board PC 64. The data obtained by the one-board PC 64 is sent to the gateway 65. Note that a desktop PC can be used instead of the one-board PC 64.

[0033] The blooming mill 105 is also equipped with sensors that measure various quantities that are not displayed on the gauges. For example, the blooming mill 105 is equipped with a flow rate sensor 66 and a vibration sensor 67. Data acquired by these sensors is also sent to the gateway 65.

[0034] The gateway 65 is connected by wire to a one-board PC 64 connected to a USB camera 61, a network camera 62, and a thermal camera 63, a flow rate sensor 66, a vibration sensor 67, etc., and is attached to the blooming mill 105 or installed near the blooming mill 105. The gateway 65 may be of a type that communicates wirelessly in accordance with the sXGP (shared extended global platform) standard. The gateway 65 transmits data from the one-board PC 64, the flow rate sensor 66, the vibration sensor 67, etc. to an access point 117 installed in the periphery of the blooming mill 105.

[0035] Not only data from the gateway 65 but also data acquired by the smartphone 68 on the operation floor 100 can be transmitted to the access point 117. For example, image data of the gauges of the blooming mill 105 captured by the smartphone 68 may be converted into gauge values ​​by image processing before being transmitted to the access point 117.

[0036] A hub 121 is provided in a server room 120 on the operation floor 100, and the hub 121 is connected to the access point 117 via an in-house network. A server 122 is also provided in the server room 120, and stores data on the blooming mill 105 obtained via the hub 121. The server 122 may provide a foundation for providing wireless communication in accordance with the sXGP standard at the access point 117.

[0037] As described above, the PLC 47 is installed in the operation room 115. The PLC 47 is provided with a touch panel 47a, which enables an operator to monitor and set the operation of the blooming mill 105. The operation room 115 also contains a process computer 48 that controls the blooming mill 105 via the PLC 47. The PLC 47 and process computer 48 are connected to a hub 121 in the server room 120 via an in-house network.

[0038] An office 130 is equipped with a human machine interface (HMI) PC (parent device) 131 and an HMI PC (child device) 132. The HMI PC (parent device) 131 and the HMI PC (child device) 132 are both connected to a hub 121 in a server room 120 via an in-house network. The type of communication on the in-house network can be any type, such as Ethernet, WiFi, sXGP, or 5G.

[0039] 7 shows an in-house network established on the operation floor 100 and the office 130 of a hot rolling factory, but the network to which this embodiment can be applied is not limited to the in-house network of a hot rolling factory. As long as it is connected via a network, even a PC or a smartphone located away from the hot rolling factory can be connected to the in-house network and used in the same way.

[0040] (Control device) Figure 8 is a diagram showing the configuration of the control device. The control device is configured using the on-site network of a hot rolling plant as shown in Figure 7. In the control device, image data acquired by photographing the instruments of the blooming mill 105 using a USB camera 61, a network camera 62, or a smartphone 68 in the on-site network shown in Figure 7 is sent to a one-board PC 64, which serves as a digital signal processing device, and is converted into values ​​indicated by the instruments through image analysis. Note that a desktop PC or the like may be used instead of the one-board PC 64, or the acquired image data may be converted into instrument values ​​using the smartphone 68 itself.

[0041] Infrared images taken by the thermal camera 63 of the entire blooming mill 105 are also sent to the one-board PC and converted into temperature distribution data in the blooming mill 105. Based on the temperature distribution data in the blooming mill 105, the temperatures of heat-generating parts such as the motor 29 are monitored.

[0042] The one-board PC 64 converts the image data of the instruments into values ​​indicated by the instruments and the temperature distribution in the blooming mill 105, which are then sent to the PLC 47 in the operation room 115. The data sent to the PLC 47 is displayed on a human-machine interface such as a touch panel 47a. An operator can monitor the operating status of the blooming mill 105 by looking at the values ​​indicated by the instruments of the blooming mill 105 and the temperature distribution in the blooming mill 105, which are displayed on the touch panel 47a.

[0043] The PLC 47 also functions as a computing device, and can provide feedback to the control of the blooming mill 105 based on the values ​​indicated by the instruments of the blooming mill 105 and the temperature distribution in the blooming mill 105. For example, if the temperature distribution in the blooming mill 105 detects that the temperature of a heat-generating part such as the motor 29 has exceeded a predetermined temperature, the PLC 47 may control the rotation speed of the fan that cools the motor 29 to lower the temperature of the motor 29. Furthermore, if a drop in the oil level gauge is detected, the PLC 47 may issue an alarm to the operator in the control room 115, close the cooling water valve to prevent oil from leaking outside, and stop the water pump.

[0044] Furthermore, the PLC 47 may detect the shape of a crop of the steel material 200 based on an image of the steel material 200 taken by a camera or the like of the image analysis device 30, and control a robot (not shown) to grip the crop. The PLC 47 may also detect the position of slag adhering to the steel material 200 from an image of the steel material 200 taken by a camera or the like of the image analysis device 30, and control an automatic slag removal device (not shown) to remove the slag from the steel material 200.

[0045] The control device allows the blooming mill 105's gauges, which are periodically checked by the blooming mill's operator, to be remotely monitored from the control room 115. This eliminates the need for the operator to travel to the blooming mill's 105 gauges, which are located in inaccessible locations, simplifying the inspection of the gauges and reducing the number of personnel required. Furthermore, the PLC 47 can provide feedback to the blooming mill's 105 control, reducing the burden on the operator. Furthermore, by introducing a vibration sensor 67, flow rate sensor 66, and other sensors, the vibrations of the blooming mill 105, which are currently only observed by the operator's five senses, can now be constantly monitored by the PLC 47 without the need for an operator.

[0046] (remote monitoring device) The remote monitoring device will now be described. The remote monitoring device is configured using an in-house network of a hot rolling mill as shown in Fig. 7. In the remote monitoring device, in the in-house network shown in Fig. 7, a PLC 47 and a process computer 48 installed in an operation room 115 on an operation floor 100 are connected to an HMI PC (parent machine) 131 and an HMI PC (child machine) 132 in an office 130.

[0047] The display screen of the touch panel 47a, which is the human-machine interface (HMI) of the PLC 47, and the display screen of the HMI of the process computer 48 are captured by capture devices and sent to the HMI PC (parent device) 131 and HMI PC (child device) 132 in the office 130 via the local area network. The HMI PC (parent device) 131 and HMI PC (child device) 132 then combine the images of these display screens into one or more images as digital signal processing devices. The display screen of the touch panel 47a of the PLC 47 and the display screen of the process computer 48 are displayed on the displays of the HMI PC (parent device) 131 and HMI PC (child device) 132 in an integrated manner. Images captured by the USB camera 61, network camera 62, thermal camera 63, smartphone 68, etc. may also be displayed in an integrated manner.

[0048] The remote monitoring device allows the operating status of the blooming mill 105 on the operation floor 100 to be constantly monitored by the HMI PC (master unit) 131 and HMI PC (slave unit) 132 in the office. This reduces the time required to start taking measures when equipment trouble occurs, and reduces the time required to start changing operations.

[0049] Although an example in which the remote monitoring device monitors the blooming mill 105 has been described above, the objects monitored by the remote monitoring device are not limited to this. The remote monitoring device can be applied to various objects, such as monitoring the transportation of ladles in a steelmaking factory, a bundling device for steel products 200, and the operation status of heavy-duty transport vehicles, also known as carrier pallets, that transport steel products 200.

[0050] (Operational data collection device) FIG. 9 is a diagram showing the configuration of an operation data collection device 140. The operation data collection device 140 is configured using the on-site network of a hot rolling mill as shown in FIG. 7. In the operation data collection device 140, the PLC 47 installed in the operation room 115 and the server 122 installed in the server room 120 are connected to a data collection PC 141 installed in the electrical room 116 and a data accumulation storage medium 142 via the on-site network. They are also connected to the image analysis PC 36 installed in the electrical room 116 as described above. The data storage medium 143 may be a NAS (network attached storage). The operation data collection device 140 is further connected to a data processing PC 151 and a data visualization PC 152 of a data visualization device 150 via the on-site network.

[0051] FIG. 10 is a diagram showing the data collection process in the operation data collection device 140. In the first process, data related to the operation of the blooming mill 105 is generated. For example, the image analysis device 30 detects the outline of the steel material 200, the measuring device 40 in FIG. 5 detects the size of the steel material 200, and the one-board PC 64 in the on-site network shown in FIG. 7 converts image data of the blooming mill 105 instruments captured by the USB camera 61 and the network camera 62 into values ​​indicated by the instruments to generate data. Infrared images of the blooming mill 105 captured by the thermal camera 63 are converted into temperature distribution data by the one-board PC 64, and various quantities of the blooming mill 105 not displayed on the instruments are obtained from, for example, the flow rate sensor 66 and the vibration sensor 67 to generate data.

[0052] In the data collection process, the data created in the data creation process is collected via the on-site network. For example, the outline, position, and length of the steel product 200 detected by the image analysis device 30 are provided by the image analysis PC 36 and collected by the data collection PC 141 via the on-site network. Also, the width, height, and other dimensions of the steel product 200 detected by the measuring device 40 (see FIG. 5 ) and the instrument values ​​converted from image data of the blooming mill 105's instruments captured by the USB camera 61 and the network camera 62 by the one-board PC 64 in the on-site network (see FIG. 7 ) are also collected by the data collection PC 141 via the on-site network. Also, the temperature distribution converted by the one-board PC 64 from the infrared image of the blooming mill 105 captured by the thermal camera 63, and various quantities of the blooming mill 105 not displayed on the instruments, such as those obtained from the flow rate sensor 66 and the vibration sensor 67, are also collected by the data collection PC 141 via the on-site network.

[0053] In the data lake process, data collected by the data collection PC 141 in the data collection process is sent to and stored in the data storage medium 142 via the local network. The data stored in the data storage medium 142 in the data lake process is unstructured data that is associated with the time the data was acquired.

[0054] In the data storage process, the data accumulated in the data accumulation storage medium 142 in the data lake process is structured. The data collection PC 141 operates as a digital signal processing device and creates a database in which the data is structured by performing processing such as associating two or more types of data acquired simultaneously. For example, the data may be structured by associating it with control signals for the blooming mill 105 or the size of the steel material 200 to be processed by the blooming mill 105.

[0055] The operational data collection device collects and stores operational data to create a structured database, which enables efficient operation of the blooming mill 105. Furthermore, the database can be referenced by the PLC 47, which can automatically operate the blooming mill 105 without the intervention of an operator in the control room 115.

[0056] (Data visualization device) 9, the data visualization device 150 is composed of a data processing PC 151 and a data visualization PC 152. The data processing PC 151 and the data visualization PC 152 are connected to the operation data collection device 140 via an in-house network. The data visualization device 150 may be installed in the operation room 115 or the electrical room 116 on the operation floor 100, or in the office 130.

[0057] The data processing PC 151, as a digital signal processing device, reads data from a database constructed in the data storage medium 142 of the operation data collection device 140 and processes the data. Since the data storage medium 142 stores data structured as a data share house as a database, the data processing PC 151 reads and processes appropriate data from the data storage medium 142 as needed. For example, the data processing PC 151 performs processing to simulate the operation of a virtual blooming mill 105 for a simulation, which will be described later.

[0058] The data processing PC 151, as a digital signal processing device, further performs rendering and the like to display the blooming mill 105 on a screen based on the read data. The data processed by the data processing PC 151 is displayed on a data visualization PC 152 and then on a display device such as a monitor.

[0059] 11 is a diagram showing an image displayed on the display 152a of the data visualization PC 152. An image of the blooming mill 105 is displayed on the display 152a of the data visualization PC 152. The display 152a of the data visualization image 152 may display the current status of the blooming mill 105 and the steel material 200 being processed, or may display a virtual simulation of the operation of the blooming mill 105 in response to input to the data visualization PC 152. The simulation may display the operation of the blooming mill 105 in response to input received by an input device (not shown).

[0060] The data visualization device not only displays the blooming mill 105 in 3D in a virtual space, but can also be used as a simulator for an automated blooming mill 105 and for training in the operation of the blooming mill 105 using a USB controller. [Explanation of symbols]

[0061] 10 Lowering mechanism 11 Lower roll 12 Upper roll 15 First front roller table 16 Second front roller table 17 First rear roller table 18 Second rear roller table 47 PLC 47a Touch panel 48 Process Computer 61 USB Camera 62 Network Cameras 63 Thermal Camera 64 One Board PC 65 Gateway 66 Flow Sensor 67 Vibration Sensor 68 Smartphones 100 Operation Floors 105 Blooming mill 115 Control room 116 Electrical Room 117 Access Points 120 Server Room 121 Hub 122 servers 130 Office 131 Human Machine Interface (HMI) PC (parent unit) 200 Steel

Claims

1. A measurement method for measuring a steel material rolled by a machine installed in a hot rolling process line, comprising: a step of irradiating a target object to be measured with light within a predetermined plane, using a sensor that detects the outline of a portion of the target object within the plane that receives reflected light, and detecting the outline of a portion of the steel material with a plurality of sensors arranged within a plane that crosses the steel material being transported on the line; a step of synthesizing the contours of the steel material measured by each sensor to obtain at least a portion of the contour of the steel material; Measurement methods including:

2. The measuring method according to claim 1 , wherein the sensor irradiates the object to be measured with a blue laser beam.

3. The method of claim 1 , further comprising measuring the size of the steel material based at least in part on the profile of the steel material.

4. The measuring method according to claim 3 , wherein the size includes a width and a height of the steel material.

5. The method of claim 3 further comprising the step of determining whether the size of the steel material is within a predetermined range.

6. The measurement method according to claim 1 , further comprising the step of determining whether or not there is a flaw in the steel material based on at least a portion of the contour of the steel material.

7. The method of claim 1 further comprising the step of calculating a weight of the steel product based on at least a portion of the profile of the steel product.

8. The measuring method according to claim 1 , further comprising the step of detecting whether the shape of the steel material is the same as a normal rolled shape based on at least a portion of the contour of the steel material.

9. the machine is a blooming mill, a rolling roll for pressing and rolling the steel material; a roller table that supports the steel material and transports it toward the rolling rolls; The steel material supported on the roller table is conveyed in a direction intersecting the conveying direction of the roller table. A manipulator to move in the direction The measurement method according to claim 1 , comprising:

10. The measurement method according to claim 9, wherein the plurality of sensors are disposed downstream of the blooming mill in the line.

11. The measurement method according to claim 1 , wherein the plurality of sensors are arranged on at least one of the upstream side and the downstream side of the hot scarf in the line.

12. The measurement method according to claim 1 , wherein the plurality of sensors are arranged downstream of a finishing rolling facility in the line.

13. A measuring device for measuring a steel material rolled by a machine installed on a hot rolling process line, a plurality of sensors that irradiate a target object to be measured with light within a predetermined plane and detect the outline of a portion of the target object within the plane by receiving reflected light, the sensors being arranged within a plane that crosses the steel material being transported on the line; a digital signal processing device that synthesizes the contours of the steel material measured by each sensor to form at least a portion of the contour of the steel material; A measuring device comprising:

14. The measuring device of claim 13 , wherein the digital signal processor measures the size of the steel material based at least in part on the contour of the steel material.

15. the machine is a blooming mill, a rolling roll for pressing and rolling the steel material; a roller table that supports the steel material and transports it toward the rolling rolls; The steel material supported on the roller table is conveyed in a direction intersecting the conveying direction of the roller table. A manipulator that moves in the direction 14. The measurement device of claim 13, comprising:

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