Method, device and equipment for positioning steel billets in a step-beam heating furnace

Abstract

The present invention provides a positioning method, device and equipment for steel billets entering a walking heating furnace, and belongs to the technical field of steel billet positioning. The method comprises the following steps: openings are respectively arranged at target distances at both ends of the furnace entry side of the walking heating furnace; first distance information of the end of the steel billet entering the furnace from a static beam of the walking heating furnace is collected through the openings by using an image acquisition device; coding information sprayed on the cross section of the steel billet entering the furnace by a pre-constructed coding ruler template is collected, and the fixed length and billet shape of the steel billet entering the furnace are determined based on the coding information; based on the fixed length and billet shape, the second distance information of the end of the steel billet entering the furnace from the static beam of the walking heating furnace is determined in combination with the coding ruler template; the second distance information is compared with the first distance information to determine the calibrated distance; based on the calibrated distance, the fixed length and the billet shape, the real-time position of the steel billet entering the furnace in the walking heating furnace is determined, so as to better ensure the accuracy of the position determination of steel billets entering the furnace with different fixed lengths and billet shapes.

Description

Technical Field

[0001] The present invention relates to the technical field of steel billet positioning, and in particular to a method, a device and equipment for positioning steel billets entering a step-beam heating furnace. Background Art

[0002] In the field of metallurgical technology, a walking beam heating furnace is a common device used to heat steel billets to a certain temperature for subsequent processing and treatment. In the process of using a walking beam heating furnace, it is very important to accurately locate the position of the steel billet, which directly affects the effect and efficiency of heating. At the same time, the field of measurement technology also involves the measurement of the position of the steel billet to ensure its position accuracy during the heating process. In addition, the field of heat treatment technology also involves the heating and positioning of the steel billet to achieve the best heat treatment effect. In the existing technology, infrared or laser ranging methods are usually used to measure the position of the steel billet. These methods mainly measure the distance between the steel billet and a fixed point, and then determine the position of the steel billet based on this distance. In addition, there are some methods that determine the position of the steel billet by setting marks on the steel billet and then identifying these marks through cameras or other devices.

[0003] However, this type of positioning method has relatively poor positioning accuracy when it comes to steel billets of different sizes and shapes. Summary of the invention

[0004] The invention provides a method, a device and equipment for positioning a steel billet entering a walking beam heating furnace, which are used to solve the defect of poor positioning accuracy of steel billets of different sizes and billet shapes in the prior art.

[0005] In one aspect, the present invention provides a method for positioning a steel billet in a walking beam heating furnace, comprising:

[0006] Openings are respectively provided at target distances at both ends of the furnace entry side of the walking beam heating furnace;

[0007] Using an image acquisition device to acquire first distance information between the end of the billet entering the furnace and the static beam of the walking beam heating furnace through the opening;

[0008] Collecting the coding information sprayed on the cross section of the incoming steel billet through a pre-built coding scale template, and determining the fixed length and billet shape of the incoming steel billet based on the coding information;

[0009] Based on the fixed length and the billet shape, and in combination with the coding scale template, second distance information of the end of the billet entering the furnace from the static beam of the walking beam heating furnace is determined;

[0010] comparing the second distance information with the first distance information to determine a calibrated distance;

[0011] Based on the calibrated distance, the fixed length and the billet shape, the real-time position of the incoming billet in the walking beam heating furnace is determined.

[0012] According to a method for positioning a steel billet entering a walking beam heating furnace provided by the present invention, openings are respectively provided at target distances at both ends of the furnace entry side of the walking beam heating furnace, comprising:

[0013] Determine the specifications of the walking beam heating furnace and the length and shape of all billets entering the furnace;

[0014] Based on the specification information and the fixed lengths and shapes of all incoming billets, two target positions located at two ends of the incoming billet are determined, where complete ends of the incoming billets can be captured;

[0015] Openings are respectively provided at the two target positions.

[0016] According to a method for positioning a steel billet in a walking beam heating furnace provided by the present invention, the method of setting openings at the two target positions respectively comprises:

[0017] Determining image quality parameters of the image of the steel billet entering the stepping heating furnace;

[0018] Selecting an image acquisition device based on the image quality parameter and the environmental parameter of the stepping furnace;

[0019] The size of the image acquisition device is determined, and based on the size, openings matching the size are respectively set at the two target positions.

[0020] According to a method for positioning a steel billet entering a walking beam heating furnace provided by the present invention, the real-time position of the steel billet entering the furnace in the walking beam heating furnace is determined based on the calibrated distance, the fixed length and the billet shape, comprising:

[0021] Based on the design parameters of the walking beam heating furnace, determine the layout and size of the space inside the walking beam heating furnace, including: the length, width and height of the heating zone, and the arrangement of the steel billets;

[0022] Based on the fixed length and the billet shape, determine the volume and occupied space of the billet entering the furnace;

[0023] Determine the positional relationship between the billet entering the furnace and the opening by using the calibrated distance;

[0024] Determining the stepping speed and heating time of the stepping heating furnace;

[0025] The length, width and height of the heating zone, the arrangement of the steel billets, the volume of the steel billets entering the furnace, the occupied space and the positional relationship are input into the position determination model, and the coordinates, direction and relationship of the steel billets entering the furnace with the structure inside the step heating furnace are output.

[0026] According to a method for positioning a steel billet entering a walking beam heating furnace provided by the present invention, after outputting the coordinates and direction of the steel billet entering the furnace and the relationship with the structure inside the walking beam heating furnace, the method further comprises:

[0027] Real-time acquisition of temperature changes in the step heating furnace and position changes of the steel billets entering the furnace;

[0028] Based on the temperature change and the position change, the real-time position of the incoming steel billet in the walking beam heating furnace is updated.

[0029] According to a method for positioning a steel billet entering a walking beam heating furnace provided by the present invention, the step of comparing the second distance information with the first distance information to determine a calibrated distance includes:

[0030] determining an error between the second distance information and the first distance information;

[0031] When the error is greater than or equal to a preset threshold, reacquiring the first distance value and the second distance value;

[0032] When the error is less than the preset threshold, generating a calibration factor based on a preset formula based on the size of the error;

[0033] The first distance information is calibrated using the calibration factor to obtain a calibrated distance.

[0034] According to a method for positioning a steel billet entering a stepping heating furnace provided by the present invention, before collecting the coding information sprayed on the cross section of the steel billet entering the furnace by a pre-built coding scale template and determining the fixed length and billet shape of the steel billet entering the furnace based on the coding information, the method further comprises:

[0035] Determine the length and shape of all billets entering the furnace;

[0036] Based on the fixed length and the blank shape, determining an optimal coding position and a corresponding optimal coding format;

[0037] Based on the optimal coding position and the optimal coding format, a coding ruler template is determined.

[0038] According to a method for positioning a steel billet in a walking beam heating furnace provided by the present invention, after determining the real-time position of the steel billet in the walking beam heating furnace based on the calibrated distance, the fixed length and the billet shape, the method further comprises:

[0039] Detecting the passing position of the billet by using the image acquisition device, and generating a detection signal when detecting that the billet passes through a predetermined position;

[0040] Determining the calculated position of the incoming billet in the walking beam heating furnace according to the fixed length of the incoming billet, the billet shape and the operating parameters of the walking beam heating furnace;

[0041] Combining the calculated position and the real-time position to obtain a target position;

[0042] The stepping action of the step heating furnace is controlled so that the steel billet entering the furnace moves to the target position.

[0043] The present invention also provides a positioning device for a steel billet in a walking beam heating furnace, comprising:

[0044] A hole opening module is used to respectively set holes at target distances at both ends of the furnace entrance side of the walking beam heating furnace;

[0045] The acquisition module is used to acquire first distance information between the end of the incoming steel billet and the static beam of the walking heating furnace through the opening by using an image acquisition device; acquire the coding information sprayed on the cross section of the incoming steel billet by a pre-built coding scale template, and determine the fixed length and billet shape of the incoming steel billet based on the coding information;

[0046] A combining module, used for determining the second distance information of the end of the incoming steel billet from the static beam of the walking beam heating furnace based on the fixed length and the billet shape and in combination with the coding scale template;

[0047] A comparison module, used for comparing the second distance information with the first distance information to determine a calibrated distance;

[0048] A determination module is used to determine the real-time position of the incoming steel billet in the walking beam heating furnace based on the calibrated distance, the fixed length and the billet shape.

[0049] On the other hand, the present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a method for positioning a steel billet entering a step heating furnace as described in any one of the above-described methods is implemented.

[0050] On the other hand, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for positioning a steel billet entering a step-beam heating furnace as described in any one of the above.

[0051] On the other hand, the present invention further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the method for positioning a steel billet entering a step-beam heating furnace as described in any one of the above.

[0052] The present invention provides a method, device and equipment for positioning steel billets entering a walking heating furnace. The method comprises the following steps: openings are respectively arranged at target distances at both ends of the furnace entry side of the walking heating furnace; first distance information of the end of the steel billet entering the furnace from a static beam of the walking heating furnace is collected through the openings by using an image acquisition device; coding information sprayed on the cross section of the steel billet entering the furnace by a pre-constructed coding ruler template is collected, and the fixed length and billet shape of the steel billet entering the furnace are determined based on the coding information; based on the fixed length and billet shape, second distance information of the end of the steel billet entering the furnace from the static beam of the walking heating furnace is determined in combination with the coding ruler template; the second distance information is compared with the first distance information to determine the calibrated distance; based on the calibrated distance, fixed length and billet shape, the real-time position of the steel billet entering the furnace in the walking heating furnace is determined, the first distance information collected through the opening position is not affected by the furnace environment, and after the first distance information is calibrated in combination with the second distance information obtained by the coding ruler template, the accuracy of the position determination of steel billets entering the furnace with different fixed lengths and billet shapes can be better guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 It is a schematic flow chart of a method for positioning a steel billet entering a walking beam heating furnace provided in an embodiment of the present invention;

[0055] Figure 2 1 is a schematic structural diagram of a positioning device for a steel billet entering a walking beam heating furnace provided in an embodiment of the present invention;

[0056] Figure 3 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0058] Combine the following Figure 1-Figure 3 The invention describes a method, device and equipment for positioning a steel billet entering a walking beam heating furnace.

[0059] Figure 1 It is a schematic flow chart of a method for positioning a steel billet entering a step-beam heating furnace provided in an embodiment of the present invention.

[0060] like Figure 1 As shown, an embodiment of the present invention provides a method for positioning a steel billet in a walking beam heating furnace, the execution body may be a control system, and the method mainly includes the following steps:

[0061] 101. Openings are respectively set at target distances at both ends of the furnace entrance side of the walking beam heating furnace.

[0062] In a specific implementation process, the walking furnace is a high-temperature environment, which will have a great impact on image acquisition or other equipment. Therefore, first, openings are set at both ends of the furnace entrance side of the walking furnace, and the openings are used to facilitate the image acquisition device to collect environmental images inside the walking furnace. By setting the openings, the image acquisition device can greatly reduce the impact of high temperature, and at the same time, the image acquisition method can also ensure the accuracy of data acquisition. The size and shape of the openings are matched with the image acquisition device, and the openings can ensure that all position images in the walking furnace are effectively collected. At the same time, the location of the openings should be selected in a place that does not affect the normal operation of the heating furnace and is convenient for installation and maintenance.

[0063] 102. Use an image acquisition device to collect first distance information between the end of the billet entering the furnace and the static beam of the step heating furnace through the opening.

[0064] After the opening is set, the image acquisition device is installed at the opening, so that the image acquisition device can effectively acquire various images inside the walking heating furnace through the opening. Then, the image acquisition device is used to acquire the first distance information of the end of the incoming billet from the static beam of the walking heating furnace at the opening. Specifically, an image including the static beam and the end of the incoming billet is acquired, and the first distance information is determined by image analysis.

[0065] Specifically, it is possible to select image acquisition equipment suitable for high-temperature environments and with characteristics such as high definition and high frame rate, such as high-temperature industrial cameras. During installation, it should be ensured that the camera lens is facing the end of the billet entering the furnace, and the relative position between the billet entering the furnace and the static beam can be clearly captured through the opening. At the same time, in order to ensure the stability of the image, appropriate anti-shake measures need to be taken, such as installing a stable bracket or using anti-shake technology. The viewing angle and focal length of the camera lens must also be considered to ensure that the image of the billet end and the static beam can be fully captured. When positioning, precise measuring tools should be used to ensure that the relative position of the opening and the camera lens is accurate. After the image acquisition device obtains the image of the billet end and the static beam, it uses image recognition, edge detection, and pixel counting to determine the pixel position of the billet entering the furnace and the static beam in the image, and then determines the first distance information between the end of the billet entering and exiting the furnace and the static beam.

[0066] 103. Collect the coding information sprayed on the cross section of the steel billet entering the furnace through a pre-built coding scale template, and determine the fixed length and billet shape of the steel billet entering the furnace based on the coding information.

[0067] First, it is necessary to determine the fixed length and billet type of all billets entering the furnace, and based on the fixed length and billet type, determine the optimal coding position and the corresponding optimal coding format; based on the optimal coding position and the optimal coding format, determine the coding scale template. The optimal coding position and the corresponding optimal coding format can ensure that the image acquisition device can clearly capture the coding information, and at the same time can ensure that the end can display the complete coding information, which not only ensures the integrity of the coding information, but also ensures the clarity of the coding information.

[0068] After the coding ruler template is made, it can be used to spray on the end face of the billet entering the furnace. When spraying, it should be ensured that the coding ruler template is aligned with the end of the billet so as to accurately obtain the distance information. Among them, the sprayed coding information includes information such as the fixed length and billet type of the billet entering the furnace. Therefore, when the image acquisition device collects the end face information of the billet entering the furnace, it can quickly identify the corresponding coding information, and then it can quickly identify the fixed length and billet type corresponding to the current billet entering the furnace according to the coding information.

[0069] 104. Based on the fixed length and the billet shape, the second distance information of the end of the billet entering the furnace from the static beam of the step heating furnace is determined in combination with the coding scale template.

[0070] After obtaining the fixed length and billet shape, combined with the scale information of the inkjet ruler template, the second distance information of the end of the billet entering and leaving the furnace from the static beam of the walking heating furnace can be accurately determined. By collecting the image of the end of the billet with the inkjet ruler and identifying the scale marks on the ruler, the position of the end of the billet entering the furnace relative to the inkjet ruler can be determined. Based on the fixed length and billet shape of the billet entering the furnace, combined with the position of the end of the billet in the image relative to the inkjet ruler, the actual distance of the end of the billet from the static beam of the walking heating furnace can be calculated.

[0071] 105. Compare the second distance information with the first distance information to determine a calibrated distance.

[0072] The first distance information is directly obtained through the image acquisition device based on the image information, while the second distance information is determined based on the inkjet scale template and the inkjet information. Therefore, in order to ensure the accuracy of the final positioning of the billet entering the furnace, the error between the second distance information and the first distance information is determined; when the error is greater than or equal to the preset threshold, it indicates that there is an error in one of the data, and the first distance value and the second distance value are re-acquired; when the error is less than the preset threshold, based on the size of the error, a calibration factor is generated based on a preset formula. The generation of the calibration factor can make the first distance information better calibrated using the second distance information, and the first distance information is calibrated using the calibration factor to obtain the calibrated distance.

[0073] By calibrating the first distance information, the influence of the temperature in the furnace, impurities, etc. on the image acquisition is avoided as much as possible, thereby better ensuring the accuracy of the final calibrated distance.

[0074] 106. Based on the calibrated distance, fixed length and billet shape, determine the real-time position of the incoming billet in the walking heating furnace.

[0075] The calibrated distance is obtained by combining image recognition and scale calculation, and then combined with the fixed length and billet shape, the real-time position of the incoming billet in the step heating furnace can be calculated quickly and accurately, including the distance and coordinates of each point of the incoming billet from the furnace wall.

[0076] The first distance information collected through the opening position is not affected by the furnace environment, and after the first distance information is calibrated with the second distance information obtained in combination with the coding scale template, the accuracy of the position determination of the steel billets entering the furnace with different sizes and billet shapes can be better guaranteed.

[0077] Furthermore, on the basis of the above-mentioned embodiment, openings are respectively arranged at target distances at both ends of the furnace entrance side of the step heating furnace in this embodiment, including: determining the specification information of the step heating furnace and the fixed length and shape of all the steel billets entering the furnace; based on the specification information and the fixed length and shape of all the steel billets entering the furnace, determining two target positions located at both ends of the furnace entrance side at which the complete ends of the steel billets entering the furnace can be collected; and setting openings at the two target positions.

[0078] Specifically, the position of the opening needs to ensure that the complete information in the step heating furnace can be fully collected. Therefore, it is necessary to determine the specification information of the step heating furnace and the fixed length and billet shape of the billet entering the furnace, determine the optimal target position, and then determine the image quality parameters of the image of the billet entering the step heating furnace; based on the image quality parameters and the environmental parameters of the step heating furnace, select the image acquisition device to ensure that the acquired image can meet the distance recognition requirements, and finally determine the size of the image acquisition device, and based on the size, set openings that match the size at the two target positions.

[0079] When determining the two target positions, the method further includes collecting a first image through a first position, collecting a second image through a second position, fusing the first image with the second image, and when a panoramic image in the step-beam heating furnace is obtained, using the corresponding first position and second position as the two target positions. Thus, the two template positions can better ensure the comprehensiveness of image collection, and further better ensure the accuracy of positioning the steel billet entering the furnace.

[0080] Furthermore, in this embodiment, the real-time position of the incoming steel billet in the walking heating furnace is determined based on the calibrated distance, fixed length and billet shape, including: based on the design parameters of the walking heating furnace, determining the layout and size of the space inside the walking heating furnace, including: the length, width and height of the heating zone, and the arrangement of the steel billets; based on the fixed length and billet shape, determining the volume and occupied space of the incoming steel billet; using the calibrated distance, determining the positional relationship between the incoming steel billet and the opening; determining the walking speed and heating time of the walking heating furnace; inputting the length, width and height of the heating zone, the arrangement of the steel billet, the volume, occupied space and positional relationship of the incoming steel billet into the position determination model, and outputting the coordinates, direction of the incoming steel billet and its relationship with the structure inside the walking heating furnace.

[0081] Specifically, in order to accurately determine the distance between the billet entering the furnace and each position in the furnace, it is necessary to first determine the length, width, height and billet arrangement of the heating zone of the step heating furnace, and then combine the volume and occupied space of the billet entering the furnace. Based on the calibrated distance, the positional relationship between each point of the billet entering and leaving the furnace and each side wall of the step heating furnace can be determined. Then the position determination model is used to determine the coordinates, direction and specific structural relationship of the billet entering the furnace. Among them, the position determination model can be understood as a three-dimensional model of the step heating furnace. Through the three-dimensional model, the position of the billet entering and leaving the furnace can be determined more accurately.

[0082] After outputting the coordinates and direction of the billet entering the furnace and the relationship with the structure inside the walking heating furnace, it also includes: real-time acquisition of the temperature change in the walking heating furnace and the position change of the billet entering the furnace; based on the temperature change and position change, the real-time position of the billet entering the furnace in the walking heating furnace is updated. By updating the temperature change parameters and position change parameters, the position change can be updated optimally, thereby ensuring the accuracy of the final real-time position.

[0083] Furthermore, on the basis of the above-mentioned embodiment, the present embodiment also includes: using an image acquisition device to detect the passing position of the steel billet entering the furnace, and generating a detection signal when detecting that it passes through a predetermined position; determining the calculated position of the steel billet entering the furnace in the walking heating furnace according to the fixed length, billet shape and operating parameters of the walking heating furnace; combining the calculated position and the real-time position to obtain the target position; controlling the stepping action of the walking heating furnace to move the steel billet entering the furnace to the target position.

[0084] Specifically, the position of the steel billet entering and leaving the furnace is determined by detecting signals, and the calculated position determined by detecting signals is combined with the implementation position to obtain the final target position, and then the steel billet entering the furnace is controlled to move to the target position to ensure that the target position is consistent with the final position of the steel billet entering the furnace.

[0085] The present invention can more accurately identify the distance between the end of the incoming billet and the furnace wall and the static beam by opening holes at the top of the two ends of the incoming side of the walking beam heating furnace, thereby improving the accuracy of billet positioning. Compared with the existing infrared or laser distance measurement methods, the measurement accuracy of the present invention is not affected by environmental factors and has higher stability.

[0086] The present invention makes a coding scale template at the end of the billet and compares the distance between the end of the billet and the static beam in the camera, so as to realize the accurate positioning requirements of staggered double-row distribution and single-row distribution of billets of different sizes and shapes, thereby greatly simplifying the operation process and reducing the operation difficulty.

[0087] Based on the same general inventive concept, the present invention also protects a positioning device for steel billets entering a walking heating furnace. The positioning device for steel billets entering a walking heating furnace provided by the present invention is described below. The positioning device for steel billets entering a walking heating furnace described below and the positioning method for steel billets entering a walking heating furnace described above can be referenced to each other.

[0088] Figure 2 It is a structural schematic diagram of a positioning device for steel billets entering a step-beam heating furnace provided in an embodiment of the present invention.

[0089] like Figure 2 As shown, the present embodiment provides a positioning device for a steel billet in a walking beam heating furnace, comprising:

[0090] The opening module 201 is used to respectively set openings at target distances at both ends of the furnace entrance side of the walking beam heating furnace;

[0091] The acquisition module 202 is used to use an image acquisition device to acquire first distance information between the end of the incoming billet and the static beam of the step heating furnace through the opening; acquire the coding information sprayed on the cross section of the incoming billet through a pre-built coding scale template, and determine the fixed length and billet shape of the incoming billet based on the coding information;

[0092] Combining module 203, for determining second distance information of the end of the incoming billet from the static beam of the walking beam heating furnace based on the fixed length and the billet shape in combination with the coding scale template;

[0093] A comparison module 204, used to compare the second distance information with the first distance information to determine a calibrated distance;

[0094] The determination module 205 is used to determine the real-time position of the incoming billet in the walking beam heating furnace based on the calibrated distance, fixed length and billet shape.

[0095] Furthermore, the opening module 201 in this embodiment is specifically used for:

[0096] Determine the specifications of the walking beam heating furnace and the length and shape of all billets entering the furnace;

[0097] Based on the specification information and the fixed lengths and shapes of all incoming billets, two target positions located at two ends of the incoming billet are determined, where complete ends of the incoming billets can be captured;

[0098] Openings are respectively provided at the two target positions.

[0099] Furthermore, the opening module 201 in this embodiment is also specifically used for:

[0100] Determining image quality parameters of the image of the steel billet entering the stepping heating furnace;

[0101] Selecting an image acquisition device based on the image quality parameter and the environmental parameter of the stepping furnace;

[0102] The size of the image acquisition device is determined, and based on the size, openings matching the size are respectively set at the two target positions.

[0103] Furthermore, the determination module 205 in this embodiment is specifically used for:

[0104] Based on the design parameters of the walking beam heating furnace, determine the layout and size of the space inside the walking beam heating furnace, including: the length, width and height of the heating zone, and the arrangement of the steel billets;

[0105] Based on the fixed length and the billet shape, determine the volume and occupied space of the billet entering the furnace;

[0106] Determine the positional relationship between the billet entering the furnace and the opening by using the calibrated distance;

[0107] Determining the stepping speed and heating time of the stepping heating furnace;

[0108] The length, width and height of the heating zone, the arrangement of the steel billets, the volume of the steel billets entering the furnace, the occupied space and the positional relationship are input into the position determination model, and the coordinates, direction and relationship of the steel billets entering the furnace with the structure inside the step heating furnace are output.

[0109] Furthermore, the determination module 205 in this embodiment is further specifically used for:

[0110] Real-time acquisition of temperature changes in the step heating furnace and position changes of the steel billets entering the furnace;

[0111] Based on the temperature change and the position change, the real-time position of the incoming steel billet in the walking beam heating furnace is updated.

[0112] Furthermore, the comparison module 204 in this embodiment is specifically used for:

[0113] determining an error between the second distance information and the first distance information;

[0114] When the error is greater than or equal to a preset threshold, reacquiring the first distance value and the second distance value;

[0115] When the error is less than the preset threshold, generating a calibration factor based on a preset formula based on the size of the error;

[0116] The first distance information is calibrated using the calibration factor to obtain a calibrated distance.

[0117] Furthermore, this embodiment also includes a production module, which is used to:

[0118] Determine the length and shape of all billets entering the furnace;

[0119] Based on the fixed length and the blank shape, determining an optimal coding position and a corresponding optimal coding format;

[0120] Based on the optimal coding position and the optimal coding format, a coding ruler template is determined.

[0121] Furthermore, this embodiment also includes an update module, which is used to:

[0122] Detecting the passing position of the billet by using the image acquisition device, and generating a detection signal when detecting that the billet passes through a predetermined position;

[0123] Determining the calculated position of the incoming billet in the walking beam heating furnace according to the fixed length of the incoming billet, the billet shape and the operating parameters of the walking beam heating furnace;

[0124] Combining the calculated position and the real-time position to obtain a target position;

[0125] The stepping action of the step heating furnace is controlled so that the steel billet entering the furnace moves to the target position.

[0126] Figure 3 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention.

[0127] like Figure 3As shown, the electronic device may include: a processor (processor) 310, a communication interface (Communications Interface) 320, a memory (memory) 330 and a communication bus 340, wherein the processor 310, the communication interface 320, and the memory 330 communicate with each other through the communication bus 340. The processor 310 can call the logic instructions in the memory 330 to execute a positioning method for a steel billet entering a walking heating furnace, the method comprising: setting openings at target distances at both ends of the furnace entry side of the walking heating furnace; using an image acquisition device to collect first distance information of the end of the steel billet entering the furnace from the static beam of the walking heating furnace through the openings; collecting the coding information sprayed on the cross-section of the steel billet entering the furnace by a pre-constructed coding ruler template, and determining the fixed length and billet shape of the steel billet entering the furnace based on the coding information; based on the fixed length and the billet shape, combined with the coding ruler template, determining the second distance information of the end of the steel billet entering the furnace from the static beam of the walking heating furnace; comparing the second distance information with the first distance information to determine the calibrated distance; based on the calibrated distance, the fixed length and the billet shape, determining the real-time position of the steel billet entering the furnace in the walking heating furnace.

[0128] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0129] On the other hand, the present invention also provides a computer program product, which includes a computer program, which can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the positioning method of the steel billet entering the furnace provided by the above-mentioned methods, which includes: setting openings at target distances at both ends of the furnace entry side of the walking heating furnace; using an image acquisition device to collect first distance information of the end of the steel billet entering the furnace from the static beam of the walking heating furnace through the openings; collecting the coding information sprayed on the cross-section of the steel billet entering the furnace through a pre-constructed coding ruler template, and determining the fixed length and billet shape of the steel billet entering the furnace based on the coding information; based on the fixed length and the billet shape, combined with the coding ruler template, determining the second distance information of the end of the steel billet entering the furnace from the static beam of the walking heating furnace; comparing the second distance information with the first distance information to determine the calibrated distance; based on the calibrated distance, the fixed length and the billet shape, determining the real-time position of the steel billet entering the furnace in the walking heating furnace.

[0130] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented by a processor to execute the positioning method for a steel billet entering a walking heating furnace provided by the above-mentioned methods when the computer program is executed, the method comprising: respectively setting openings at target distances at both ends of the furnace entry side of the walking heating furnace; using an image acquisition device to collect first distance information of the end of the steel billet entering the furnace from the static beam of the walking heating furnace through the openings; collecting coding information sprayed on the cross-section of the steel billet entering the furnace by a pre-constructed coding ruler template, and determining the fixed length and billet shape of the steel billet entering the furnace based on the coding information; based on the fixed length and the billet shape, determining the second distance information of the end of the steel billet entering the furnace from the static beam of the walking heating furnace in combination with the coding ruler template; comparing the second distance information with the first distance information to determine the calibrated distance; and determining the real-time position of the steel billet entering the furnace in the walking heating furnace based on the calibrated distance, the fixed length and the billet shape.

[0131] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0132] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for positioning a steel billet in a walking beam heating furnace, characterized in that: include: Openings are respectively provided at target distances at both ends of the furnace entry side of the walking beam heating furnace; Using an image acquisition device to acquire first distance information between the end of the billet entering the furnace and the static beam of the walking beam heating furnace through the opening; Collecting the coding information sprayed on the cross section of the incoming steel billet through a pre-built coding scale template, and determining the fixed length and billet shape of the incoming steel billet based on the coding information; Based on the fixed length and the billet shape, and in combination with the coding scale template, second distance information of the end of the billet entering the furnace from the static beam of the walking beam heating furnace is determined; comparing the second distance information with the first distance information to determine a calibrated distance; Based on the calibrated distance, the fixed length and the billet shape, the real-time position of the incoming billet in the walking beam heating furnace is determined.

2. The method for positioning a steel billet in a walking beam heating furnace according to claim 1, characterized in that: The steps of respectively setting openings at target distances at both ends of the furnace entrance side of the walking beam heating furnace include: Determine the specifications of the walking beam heating furnace and the length and shape of all billets entering the furnace; Based on the specification information and the fixed lengths and shapes of all incoming billets, two target positions located at two ends of the incoming billet are determined, where complete ends of the incoming billets can be captured; Openings are respectively provided at the two target positions.

3. The method for positioning a steel billet in a walking beam heating furnace according to claim 2, characterized in that: The step of respectively setting openings at the two target positions comprises: Determining image quality parameters of the image of the steel billet entering the stepping heating furnace; Selecting an image acquisition device based on the image quality parameter and the environmental parameter of the stepping furnace; The size of the image acquisition device is determined, and based on the size of the image acquisition device, openings matching the size of the image acquisition device are respectively set at the two target positions.

4. The method for positioning a steel billet in a walking beam heating furnace according to claim 1, characterized in that: The step of determining the real-time position of the incoming steel billet in the walking beam heating furnace based on the calibrated distance, the fixed length and the billet shape comprises: Based on the design parameters of the walking beam heating furnace, determine the layout and size of the space inside the walking beam heating furnace, including: the length, width and height of the heating zone, and the arrangement of the steel billets; Based on the fixed length and the billet shape, determine the volume and occupied space of the billet entering the furnace; Determine the positional relationship between the billet entering the furnace and the opening by using the calibrated distance; Determining the stepping speed and heating time of the stepping heating furnace; The length, width and height of the heating zone, the arrangement of the steel billets, the volume of the steel billets entering the furnace, the occupied space and the positional relationship are input into the position determination model, and the coordinates, direction and relationship of the steel billets entering the furnace with the structure inside the step heating furnace are output.

5. The method for positioning a steel billet in a walking beam heating furnace according to claim 4, characterized in that: After outputting the coordinates and direction of the steel billet entering the furnace and the relationship between the steel billet and the structure inside the step heating furnace, the method further includes: Real-time acquisition of temperature changes in the step heating furnace and position changes of the steel billets entering the furnace; Based on the temperature change and the position change, the real-time position of the incoming steel billet in the walking beam heating furnace is updated.

6. The method for positioning a steel billet in a walking beam heating furnace according to claim 1, characterized in that: The comparing the second distance information with the first distance information to determine the calibrated distance includes: determining an error between the second distance information and the first distance information; When the error is greater than or equal to a preset threshold, reacquiring the first distance information and the second distance information; When the error is less than the preset threshold, generating a calibration factor based on a preset formula based on the size of the error; The first distance information is calibrated using the calibration factor to obtain a calibrated distance.

7. The method for positioning a steel billet in a walking beam heating furnace according to any one of claims 1 to 6, characterized in that: The step of collecting the coding information sprayed on the cross section of the incoming steel billet by means of a pre-built coding scale template and determining the length and shape of the incoming steel billet based on the coding information further comprises: Determine the length and shape of all billets entering the furnace; Based on the fixed length and the blank shape, determining an optimal coding position and a corresponding optimal coding format; Based on the optimal coding position and the optimal coding format, a coding ruler template is determined.

8. The method for positioning a steel billet in a walking beam heating furnace according to any one of claims 1 to 6, characterized in that: After determining the real-time position of the incoming steel billet in the walking beam heating furnace based on the calibrated distance, the fixed length and the billet shape, the method further includes: Detecting the passing position of the billet by using the image acquisition device, and generating a detection signal when detecting that the billet passes through a predetermined position; Determining the calculated position of the incoming billet in the walking beam heating furnace according to the fixed length of the incoming billet, the billet shape and the operating parameters of the walking beam heating furnace; Combining the calculated position and the real-time position to obtain a target position; The stepping action of the step heating furnace is controlled so that the steel billet entering the furnace moves to the target position.

9. A positioning device for steel billets in a walking beam heating furnace, characterized in that: include: A hole opening module is used to respectively set holes at target distances at both ends of the furnace entrance side of the walking beam heating furnace; A collection module, used for collecting first distance information between the end of the billet entering the furnace and the static beam of the walking beam heating furnace through the opening by using an image collection device; Collecting the coding information sprayed on the cross section of the incoming steel billet through a pre-built coding scale template, and determining the fixed length and billet shape of the incoming steel billet based on the coding information; A combining module, used for determining the second distance information of the end of the incoming steel billet from the static beam of the walking beam heating furnace based on the fixed length and the billet shape and in combination with the coding scale template; A comparison module, used for comparing the second distance information with the first distance information to determine a calibrated distance; A determination module is used to determine the real-time position of the incoming steel billet in the walking beam heating furnace based on the calibrated distance, the fixed length and the billet shape.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the method for positioning the steel billet entering the step heating furnace as described in any one of claims 1 to 8 is implemented.

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