Intelligent grade analysis system for hot rolled seamless steel pipes

Abstract

The present invention relates to a grade intelligent analysis system for hot-rolled seamless steel pipes, comprising: a rotating camera mechanism for performing isometric camera operations on the hot-rolled seamless steel pipe from multiple different angles around the hot-rolled seamless steel pipe; a numerical analysis device for intelligently analyzing the uniformity grade of the surface material of the hot-rolled seamless steel pipe; and a grade identification device for performing an on-site alarm operation corresponding to the uneven surface material of the hot-rolled seamless steel pipe when the uniformity grade of the surface material of the hot-rolled seamless steel pipe is less than or equal to the set grade limit. Through the present invention, it is possible to analyze the pixels occupied by the hot-rolled seamless steel pipe in the real-time filtered image, and then determine the uniformity grade of the surface material of the hot-rolled seamless steel pipe based on the variance values ​​of the multiple position data corresponding to the multiple pixels, thereby completing the visual detection of the uniformity of the surface material of each hot-rolled seamless steel pipe.

Description

Technical Field

[0001] The present invention relates to the field of seamless steel pipes, and in particular to an intelligent grade analysis system for hot-rolled seamless steel pipes. Background Art

[0002] Hot-rolled seamless steel pipe: Hot rolling is the opposite of cold rolling. Cold rolling is performed below the recrystallization temperature, while hot rolling is performed above the recrystallization temperature. The advantage of hot-rolled seamless steel pipe is that it can break down the cast structure of the steel ingot, refine the steel grains, and eliminate microstructural defects, thereby making the steel structure denser and improving mechanical properties. This improvement is mainly reflected along the rolling direction, making the steel less isotropic to a certain extent. Bubbles, cracks, and looseness formed during casting can also be welded under high temperature and pressure.

[0003] For hot-rolled seamless steel pipes, the uniformity of the surface material of the hot-rolled seamless steel pipes determines the manufacturing quality of the hot-rolled seamless steel pipes. Since hot-rolled seamless steel pipes are raw materials for manufacturing other related products, the uniformity of the surface material of the hot-rolled seamless steel pipes also determines the manufacturing quality of the related products of the hot-rolled seamless steel pipes. However, in the existing technology, the uniformity of the surface material of the hot-rolled seamless steel pipes is determined based on either manual mode judgment or rough electronic mode judgment, and the accuracy and speed of the judgment are difficult to meet the needs of existing industrial manufacturing. Summary of the Invention

[0004] In order to solve the technical problems in the prior art, the present invention provides a grade intelligent analysis system for hot-rolled seamless steel pipes, which can analyze the pixels occupied by the hot-rolled seamless steel pipes in the real-time filtered image, obtain the brightness values ​​corresponding to the pixels corresponding to the hot-rolled seamless steel pipes, take the brightness value with the highest frequency among the brightness values ​​as the reference brightness value, determine multiple pixels with the reference brightness values ​​among the pixels corresponding to the hot-rolled seamless steel pipes, determine the surface material uniformity grade of the hot-rolled seamless steel pipes based on the variance values ​​of the multiple position data corresponding to the multiple pixels, and when the surface material uniformity grade of the hot-rolled seamless steel pipes in the targeted visual inspection is less than or equal to the set grade limit, execute the on-site alarm operation corresponding to the surface material unevenness of the hot-rolled seamless steel pipes; otherwise, temporarily suspend the on-site alarm operation corresponding to the surface material unevenness of the hot-rolled seamless steel pipes, thereby completing the visual detection of the surface material uniformity of each hot-rolled seamless steel pipe.

[0005] According to the present invention, there is provided a grade intelligent analysis system for hot-rolled seamless steel pipes, the system comprising:

[0006] a rotating camera mechanism for performing isometric camera operations on the hot-rolled seamless steel pipe from multiple different angles around the hot-rolled seamless steel pipe to obtain multiple different isometric camera images, and performing image combination processing on the multiple different isometric camera images to obtain corresponding combined imaging images;

[0007] A real-time enhancement device, connected to the rotating camera mechanism, for performing image frequency domain enhancement processing on the received combined imaging image to obtain and output a corresponding real-time enhanced image;

[0008] a bilateral filtering device, connected to the real-time enhancement device, configured to perform bilateral filtering on the received real-time enhanced image to obtain and output a corresponding bilateral filtered image;

[0009] a signal mapping device connected to the bilateral filtering device, configured to perform impulse noise filtering and Gaussian white noise filtering on the received image to obtain and output a corresponding instant filtered image;

[0010] a numerical analysis device connected to the signal mapping device and comprising a pixel analysis device, a coordinate judgment device, a numerical mapping device, and a main control chip, wherein the main control chip is used to realize real-time configuration of working parameters of the pixel analysis device, the coordinate judgment device, and the numerical mapping device; the coordinate judgment device is respectively connected to the pixel analysis device and the numerical mapping device; the numerical analysis device is used to analyze each pixel occupied by the hot-rolled seamless steel pipe in the real-time filtered image, obtain each brightness value corresponding to each pixel corresponding to the hot-rolled seamless steel pipe, use the brightness value with the highest frequency among the brightness values ​​as a reference brightness value, determine multiple pixels having the reference brightness values ​​among the pixels corresponding to the hot-rolled seamless steel pipe, and determine the surface material uniformity grade of the hot-rolled seamless steel pipe based on the variance values ​​of the multiple position data corresponding to the multiple pixels, wherein the determined surface material uniformity grade of the hot-rolled seamless steel pipe is inversely correlated with the variance values ​​of the multiple position data corresponding to the multiple pixels;

[0011] a grade identification device connected to the numerical analysis device, for executing an on-site alarm operation corresponding to the uneven surface material of the hot-rolled seamless steel pipe when the received surface material uniformity grade of the hot-rolled seamless steel pipe is less than or equal to a set grade limit;

[0012] Among them, equidistant camera actions are performed on the hot-rolled seamless steel pipe from multiple different angles to obtain multiple different equidistant camera images, and image combination processing is performed on the multiple different equidistant camera images to obtain corresponding combined imaging images, including: when the camera action is performed on the hot-rolled seamless steel pipe at each angle, the distance between the imaging lens of the rotating camera mechanism and the hot-rolled seamless steel pipe is equal.

[0013] It can be seen that the present invention has at least the following four important invention points:

[0014] First, a numerical analysis device is introduced, including a pixel analysis device, a coordinate judgment device, a numerical mapping device, and a main control chip. The main control chip is used to realize real-time configuration of the working parameters of the pixel analysis device, the coordinate judgment device, and the numerical mapping device. The coordinate judgment device is connected to the pixel analysis device and the numerical mapping device respectively, thereby establishing a specifically designed hardware platform for identifying the uniformity grade of the surface material of hot-rolled seamless steel pipes.

[0015] Second, analyzing each pixel occupied by the hot-rolled seamless steel pipe in the instant filtered image, obtaining each brightness value corresponding to each pixel corresponding to the hot-rolled seamless steel pipe, taking the brightness value with the highest frequency among the brightness values ​​as a reference brightness value, determining a plurality of pixels having the reference brightness values ​​among the pixels corresponding to the hot-rolled seamless steel pipe, and determining the surface material uniformity grade of the hot-rolled seamless steel pipe based on the variance values ​​of the plurality of position data corresponding to the plurality of pixels, wherein the determined surface material uniformity grade of the hot-rolled seamless steel pipe is inversely correlated with the variance values ​​of the plurality of position data corresponding to the plurality of pixels;

[0016] Third: A grade identification device is used to execute an on-site alarm operation corresponding to the uneven surface material of the hot-rolled seamless steel pipe when the surface material uniformity grade of the hot-rolled seamless steel pipe in targeted visual inspection is less than or equal to the set grade limit. Otherwise, the on-site alarm operation corresponding to the uneven surface material of the hot-rolled seamless steel pipe is temporarily suspended, thereby completing the visual inspection of the surface material uniformity of each hot-rolled seamless steel pipe;

[0017] Fourthly: a rotating camera mechanism is used to perform equidistant camera actions on the hot-rolled seamless steel pipe from multiple different angles around the hot-rolled seamless steel pipe to obtain multiple different equidistant camera images, and image combination processing is performed on the multiple different equidistant camera images to obtain corresponding combined imaging images, thereby obtaining imaging data of the entire surface of the hot-rolled seamless steel pipe, providing more comprehensive basic information for subsequent detection of the uniformity of the surface material of the hot-rolled seamless steel pipe. DETAILED DESCRIPTION

[0018] The following is a detailed description of an embodiment of the intelligent grade analysis system for hot-rolled seamless steel pipes according to the present invention.

[0019] The intelligent grade analysis system for hot-rolled seamless steel pipes shown in embodiment A of the present invention includes:

[0020] a rotating camera mechanism for performing isometric camera operations on the hot-rolled seamless steel pipe from multiple different angles around the hot-rolled seamless steel pipe to obtain multiple different isometric camera images, and performing image combination processing on the multiple different isometric camera images to obtain corresponding combined imaging images;

[0021] A real-time enhancement device, connected to the rotating camera mechanism, for performing image frequency domain enhancement processing on the received combined imaging image to obtain and output a corresponding real-time enhanced image;

[0022] Specifically, the real-time enhancement device is connected to the rotating camera mechanism and is used to perform image frequency domain enhancement processing on the received combined imaging image to obtain and output a corresponding real-time enhanced image, including: selecting and using a MATLAB toolbox to implement simulation and testing of a data processing process of performing image frequency domain enhancement processing on the received combined imaging image to obtain and output a corresponding real-time enhanced image;

[0023] a bilateral filtering device, connected to the real-time enhancement device, configured to perform bilateral filtering on the received real-time enhanced image to obtain and output a corresponding bilateral filtered image;

[0024] a signal mapping device connected to the bilateral filtering device, configured to perform impulse noise filtering and Gaussian white noise filtering on the received image to obtain and output a corresponding instant filtered image;

[0025] a numerical analysis device connected to the signal mapping device and comprising a pixel analysis device, a coordinate judgment device, a numerical mapping device, and a main control chip, wherein the main control chip is used to realize real-time configuration of working parameters of the pixel analysis device, the coordinate judgment device, and the numerical mapping device; the coordinate judgment device is respectively connected to the pixel analysis device and the numerical mapping device; the numerical analysis device is used to analyze each pixel occupied by the hot-rolled seamless steel pipe in the real-time filtered image, obtain each brightness value corresponding to each pixel corresponding to the hot-rolled seamless steel pipe, use the brightness value with the highest frequency among the brightness values ​​as a reference brightness value, determine multiple pixels having the reference brightness values ​​among the pixels corresponding to the hot-rolled seamless steel pipe, and determine the surface material uniformity grade of the hot-rolled seamless steel pipe based on the variance values ​​of the multiple position data corresponding to the multiple pixels, wherein the determined surface material uniformity grade of the hot-rolled seamless steel pipe is inversely correlated with the variance values ​​of the multiple position data corresponding to the multiple pixels;

[0026] a grade identification device connected to the numerical analysis device, for executing an on-site alarm operation corresponding to the uneven surface material of the hot-rolled seamless steel pipe when the received surface material uniformity grade of the hot-rolled seamless steel pipe is less than or equal to a set grade limit;

[0027] The method comprises: performing an equidistant camera operation on the hot-rolled seamless steel pipe from multiple different angles to obtain multiple different equidistant camera images; and performing image combination processing on the multiple different equidistant camera images to obtain corresponding combined imaging images, wherein when performing the camera operation on the hot-rolled seamless steel pipe at each angle, the distance between the imaging lens of the rotating camera mechanism and the hot-rolled seamless steel pipe is equal;

[0028] The grade identification device is further used to temporarily suspend the on-site alarm operation corresponding to the uneven surface material of the hot-rolled seamless steel pipe when the received surface material uniformity grade of the hot-rolled seamless steel pipe is greater than the set grade limit.

[0029] Compared with embodiment A of the present invention, the grade intelligent analysis system for hot-rolled seamless steel pipes shown in embodiment B of the present invention may further include:

[0030] a width sensor device, connected to the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device, respectively, for measuring the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device, respectively;

[0031] Wherein, the width sensor device is respectively connected to the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device, and is used to respectively measure the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device, including: the width sensor device includes a plurality of width measurement units, which are respectively connected to the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device to complete the respective measurements of the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device;

[0032] Wherein, the width sensor device includes a plurality of width measurement units, which are respectively connected to the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device to complete the respective measurement of the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device, including: the plurality of width measurement units are a plurality of width sensors, which are respectively connected to the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device to complete the respective measurement of the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device;

[0033] The plurality of width measurement units are a plurality of width sensors, which are respectively connected to the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device to respectively measure the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device. The plurality of width sensors have the same structure.

[0034] Among them, the multiple width measurement units are multiple width sensors, which are used to connect with the real-time enhancement device, the bilateral filtering device signal, the signal mapping device and the numerical analysis device respectively to complete the separate measurement of the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device and the numerical analysis device. It also includes: the multiple width sensors have the same width measurement upper limit value and width measurement lower limit value.

[0035] Compared with embodiment A of the present invention, the grade intelligent analysis system for hot-rolled seamless steel pipes shown in embodiment C of the present invention may further include:

[0036] a width display mechanism, connected to the multiple width measurement units of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device, respectively, for synchronously displaying the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device, and the numerical analysis device;

[0037] Wherein, the width display mechanism is respectively connected to the multiple width measurement units of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device and the numerical analysis device, and is used to synchronously display the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device and the numerical analysis device. The width display mechanism includes an LED display array;

[0038] And wherein, the width display mechanism is respectively connected to multiple width measurement units of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device and the numerical analysis device, and is used to synchronously display the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device signal, the signal mapping device and the numerical analysis device, including: the width display mechanism is an LCD display array.

[0039] In addition, in the grade intelligent analysis system for hot-rolled seamless steel pipes, multiple pixels having the reference brightness value among the pixels corresponding to the hot-rolled seamless steel pipe are determined, and the surface material uniformity grade of the hot-rolled seamless steel pipe is determined based on the variance values ​​of the multiple position data respectively corresponding to the multiple pixels, wherein the determined surface material uniformity grade of the hot-rolled seamless steel pipe is inversely correlated with the variance values ​​of the multiple position data respectively corresponding to the multiple pixels, including: using a numerical simulation mode to implement the testing and simulation of the data processing process of determining multiple pixels having the reference brightness value among the pixels corresponding to the hot-rolled seamless steel pipe, and determining the surface material uniformity grade of the hot-rolled seamless steel pipe based on the variance values ​​of the multiple position data respectively corresponding to the multiple pixels.

[0040] The intelligent grade analysis system for hot-rolled seamless steel pipes of the present invention addresses the technical problem of the lack of a high-precision, targeted detection mechanism for the uniformity of the surface material of hot-rolled seamless steel pipes in the prior art. By analyzing the pixels occupied by the hot-rolled seamless steel pipes in the real-time filtered image, and then determining the surface material uniformity grade of the hot-rolled seamless steel pipe based on the variance values ​​of multiple position data corresponding to the multiple pixels, the visual detection of the surface material uniformity of each hot-rolled seamless steel pipe is completed.

[0041] The present invention may be implemented and practiced in various forms without departing from its spirit and essential features. Therefore, the embodiments described are to be considered in all respects as illustrative and not limiting. The scope of the present invention is defined by the appended claims, rather than by the foregoing description. It is intended that all modifications and variations coming within the scope of equivalents of the appended claims be included.

Claims

1. An intelligent grade analysis system for hot-rolled seamless steel pipes, characterized in that: The system comprises: A rotating camera mechanism is used to perform isometric camera operations on the hot-rolled seamless steel pipe from multiple different angles around the hot-rolled seamless steel pipe to obtain multiple different isometric camera images, and perform image combination processing on the multiple different isometric camera images to obtain corresponding combined imaging images; A real-time enhancement device, connected to the rotating camera mechanism, for performing image frequency domain enhancement processing on the received combined imaging image to obtain and output a corresponding real-time enhanced image; A bilateral filtering device, connected to the real-time enhancement device, for performing a bilateral filtering process on the received real-time enhanced image to obtain and output a corresponding bilateral filtered image; A signal mapping device, connected to the bilateral filtering device, for performing impulse noise filtering and Gaussian white noise filtering on the received image to obtain and output a corresponding instant filtered image; a numerical analysis device connected to the signal mapping device and comprising a pixel analysis device, a coordinate judgment device, a numerical mapping device and a main control chip, wherein the main control chip is used to realize real-time configuration of working parameters of the pixel analysis device, the coordinate judgment device and the numerical mapping device, and the coordinate judgment device is respectively connected to the pixel analysis device and the numerical mapping device, and the numerical analysis device is used to analyze each pixel occupied by the hot-rolled seamless steel pipe in the real-time filtered image, obtain each brightness value corresponding to each pixel corresponding to the hot-rolled seamless steel pipe, take the brightness value with the highest frequency among the brightness values ​​as the reference brightness value, determine a plurality of pixels having the reference brightness value among the pixels corresponding to the hot-rolled seamless steel pipe, and determine the surface material uniformity grade of the hot-rolled seamless steel pipe based on the variance values ​​of the plurality of position data corresponding to the plurality of pixels, wherein the determined surface material uniformity grade of the hot-rolled seamless steel pipe is inversely correlated with the variance values ​​of the plurality of position data corresponding to the plurality of pixels; A grade identification device, connected to the numerical analysis device, is used to perform an on-site alarm operation corresponding to the uneven surface material of the hot-rolled seamless steel pipe when the received surface material uniformity grade of the hot-rolled seamless steel pipe is less than or equal to the set grade limit; Among them, equidistant camera action is performed on the hot-rolled seamless steel pipe from multiple different angles around the hot-rolled seamless steel pipe to obtain multiple different equidistant camera images. When the camera action is performed on the hot-rolled seamless steel pipe at each angle, the distance from the imaging lens of the rotating camera mechanism to the hot-rolled seamless steel pipe is equal.

2. The grade intelligent analysis system for hot-rolled seamless steel pipe according to claim 1, characterized in that: The grade identification device is also used to temporarily suspend the on-site alarm operation corresponding to the uneven surface material of the hot-rolled seamless steel pipe when the received surface material uniformity grade of the hot-rolled seamless steel pipe is greater than the set grade limit.

3. The grade intelligent analysis system for hot-rolled seamless steel pipe according to claim 2, characterized in that: The system further comprises: a width sensor device, connected to the real-time enhancement device, the bilateral filtering device, the signal mapping device and the numerical analysis device, respectively, and used to measure the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device, the signal mapping device and the numerical analysis device respectively; Among them, the width sensor device includes multiple width measurement units, which are used to connect to the real-time enhancement device, the bilateral filtering device, the signal mapping device and the numerical analysis device respectively, so as to complete the respective measurements of the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device, the signal mapping device and the numerical analysis device.

4. The grade intelligent analysis system for hot-rolled seamless steel pipe according to claim 3, characterized in that: The multiple width measurement units are multiple width sensors, which are used to connect to the real-time enhancement device, the bilateral filtering device, the signal mapping device and the numerical analysis device respectively, so as to complete the respective measurements of the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device, the signal mapping device and the numerical analysis device.

5. The grade intelligent analysis system for hot-rolled seamless steel pipe according to claim 4, characterized in that: The plurality of width sensors have the same structure.

6. The grade intelligent analysis system for hot-rolled seamless steel pipe according to claim 5, characterized in that: The plurality of width sensors have the same width measurement upper limit value and width measurement lower limit value.

7. The intelligent grade analysis system for hot-rolled seamless steel pipe according to any one of claims 3 to 6, characterized in that: The system further comprises: The width display mechanism is respectively connected to multiple width measurement units of the real-time enhancement device, the bilateral filtering device, the signal mapping device and the numerical analysis device, and is used to synchronously display the current real-time width values ​​of the real-time enhancement device, the bilateral filtering device, the signal mapping device and the numerical analysis device.

8. The grade intelligent analysis system for hot-rolled seamless steel pipe according to claim 7, characterized in that: The width display mechanism is an LED display array.

9. The grade intelligent analysis system for hot-rolled seamless steel pipe according to claim 7, characterized in that: The width display mechanism is an LCD display array.