A gas cylinder closing method and device based on multi-region monitoring and a medium

Abstract

The embodiment of the specification discloses a gas cylinder closing method and device based on multi-region monitoring, equipment and medium, the method comprises the following steps: obtaining the initial image of the gas cylinder to be closed collected by the preset image collection device, so as to obtain the deformation area image of the gas cylinder to be closed; extracting the contour data of the deformation area image in multiple directions to obtain the corresponding contour line, and determining the split line of multiple deformation areas of the gas cylinder to be closed according to a preset deformation area division rule; dividing the deformation area image according to the split line, obtaining the area sub-image of each deformation area, determining the deformation condition of the gas cylinder based on each area sub-image to judge whether the gas cylinder closing is completed; if not, determining the current deformation area corresponding to the rotary knife table based on multiple sensors; real-time receiving the real-time temperature data collected by the preset infrared temperature measuring instrument, inputting the preset temperature range of the current deformation area and the real-time temperature data into the preset programmable logic controller, controlling the preset electrical control electromagnetic valve to open the blowtorch, and performing the gas cylinder closing action.

Description

TECHNICAL FIELD

[0001] The present specification relates to the field of hot necking of spinning, and in particular to a gas cylinder necking method and device based on multi-region monitoring and a medium. BACKGROUND

[0002] Gas cylinders are one of the common special equipment in China. With the development and progress of the gas, electronic and medical industries, the gas industry has also developed rapidly, and the demand has been increasing year by year. The forming technology of metal pipe gas cylinder is the key technology of gas cylinder manufacturing, especially the necking forming is a necessary processing process in gas cylinder forming technology. In addition to the necking procedure, the heating temperature of the gas cylinder workpiece is also a crucial factor affecting the quality of the aluminum bottle spinning necking.

[0003] In the prior art, the gas cylinder spinning necking time is long, so that the temperature continues to drop during the necking process, and the temperature drops too fast when the necking is completed, which cannot reach the best temperature for gas cylinder necking, thereby increasing the possibility of processing defects of the gas cylinder. In the traditional way, the temperature control during the necking process of the gas cylinder is generally to use a manual handheld heat supplement gun to cooperate with the workpiece spinning necking temperature measurement system to supplement heat to the workpiece, so that the workpiece temperature is within the required temperature range for gas cylinder processing. However, the manual temperature supplement method not only makes the workpiece temperature inconsistent, but also has safety hazards. And the existing gas cylinder necking through the temperature supplement method usually only measures the temperature of a certain area of the gas cylinder, and cannot provide different temperatures according to the different deformation amounts required at different positions during the gas cylinder necking process, so that the spinning passes during the gas cylinder necking process are more. SUMMARY

[0004] To solve the above technical problems, one or more embodiments of the present specification provide a gas cylinder necking method, device and medium based on multi-region monitoring.

[0005] One or more embodiments of the present specification adopt the following technical solutions:

[0006] One or more embodiments of the present specification provide a gas cylinder necking method based on multi-region monitoring, the method comprising:

[0007] Obtaining an initial image of a gas cylinder to be necked collected by an image collection device prepositioned on a hot spinning device, to extract a deformation area image of the gas cylinder to be necked in the initial image;

[0008] extract contour data of the plurality of directions of the deformation region image to obtain a contour line of the deformation region of the gas cylinder to be closed based on the contour data, determine a split line of the plurality of deformation regions of the gas cylinder to be closed based on the contour line and a preset deformation region division rule, and set a plurality of sensors on the split line; wherein the plurality of deformation regions include a straight section of a nozzle region, a transition region of a nozzle and a body, and a body region.

[0009] divide the deformation region image according to the split line to obtain a region sub-image of each of the deformation regions, determine a deformation condition of the gas cylinder to be closed based on the region sub-image of each of the deformation regions, and determine whether the gas cylinder closing is completed based on the deformation condition; wherein the deformation condition includes deformation curvature data of each of the deformation regions.

[0010] In the case where the gas cylinder closing is not completed, determine position information of a rotating knife table in the hot spinning equipment based on the plurality of sensors, and determine a current deformation region required for operation of the rotating knife table based on the position information; wherein the rotating knife table in the hot spinning equipment is installed on a rotating base in the hot spinning equipment.

[0011] real-time receive real-time temperature data of each of the deformation regions collected by an infrared temperature measuring instrument in the hot spinning equipment, input a preset temperature range of a current deformation region and real-time temperature data of the current deformation region into a preset programmable logic controller on the hot spinning equipment, and control the preset electrical control electromagnetic valve to open a baking gun on the hot spinning equipment to perform a gas cylinder closing action through the preset programmable logic controller; wherein the positions of the preset infrared temperature measuring instrument correspond to the positions of the straight section of the nozzle region, the transition region of the nozzle and the body, and the body region, respectively, and the preset infrared temperature measuring instrument is connected to the preset programmable controller through a preset input module.

[0012] Optionally, in one or more embodiments of the present specification, based on the contour line and the preset deformation region division rule, the split line of the plurality of deformation regions of the gas cylinder to be closed is determined, and a plurality of sensors are set on the split line, specifically including:

[0013] extract a symmetric continuous line segment in the contour line, and obtain a symmetric axis of the symmetric continuous line segment and a single-side symmetric continuous line segment;

[0014] respectively obtain a plurality of inflection points of the single-side symmetric continuous line segment, and determine position information of each of the inflection points;

[0015] Based on the position information of each inflection point and the symmetry axis of the symmetric continuous line segment, a symmetric inflection point in the two single-side symmetric continuous line segments is determined, and a connecting line corresponding to the symmetric inflection point is taken as a division line of a plurality of deformation regions of the necked cylinder, so as to set a plurality of sensors on the division line.

[0016] Optionally, in one or more embodiments of the present specification, after the deformation condition of the necked cylinder is determined based on the area sub-image of each deformation region, the method further comprises:

[0017] The material composition of the necked cylinder is determined; wherein the material composition of the necked cylinder is aluminum alloy; the specific chemical composition of the material composition is Si: 0.40-0.80%, Fe≤0.70%, Cu: 0.15-0.40%, Mn≤0.15, Mg: 0.80-1.20%, Cr: 0.04-0.35%, Zn≤0.25%, Ti≤0.15%;

[0018] The material information corresponding to the necked cylinder and the processing temperature threshold are determined; wherein the material information includes yield strength under pressure and elastic coefficient; and the processing temperature threshold is 550℃;

[0019] Based on the area sub-image of each deformation region, the deformation condition of the necked cylinder is determined, so as to determine the required deformation amount of each deformation region of the necked cylinder by comparing the deformation condition of the necked cylinder with the standard necking deformation condition of the pre-set necked cylinder;

[0020] The maximum deformation amount of the deformation region is obtained, and based on the material information and the maximum deformation amount of each deformation region within the processing temperature threshold, the hot forming necking process of the necked cylinder is simulated to obtain the relationship between the temperature field and the stress field corresponding to the necked cylinder;

[0021] According to the required deformation amount of each deformation region of the necked cylinder, the limit rolling wheel axial force corresponding to each deformation region is determined;

[0022] Based on the relationship between the temperature field and the stress field and the limit rolling wheel axial force corresponding to each deformation region, the pre-set temperature range of each deformation region in the necked cylinder is determined; wherein the pre-set temperature range is less than the processing temperature threshold, and the pre-set temperature range is: the pre-set temperature range of the straight section region of the cylinder nozzle is 500-540℃, the pre-set temperature range of the transition region between the cylinder nozzle and the cylinder body is 460-500℃, and the pre-set temperature range of the cylinder body region is 420-460℃.

[0023] Optionally, in one or more embodiments of the present specification, real-time temperature data of each deformation area collected by the infrared temperature measuring instrument in the hot spinning device is received in real time, and the preset temperature range of the current deformation area and the real-time temperature data of the current deformation area are input into the preset programmable logic controller on the hot spinning device to control the preset electric control electromagnetic valve to open the heating gun on the hot spinning device to perform the cylinder closing action, specifically including:

[0024] According to the plurality of preset infrared temperature measuring instruments, real-time temperature data of each deformation area is acquired;

[0025] Based on the plurality of sensors arranged on the split line, the rotating knife table is monitored to acquire position data and movement direction of the rotating knife table, and based on the position data and the movement direction, it is judged whether the moving knife table crosses the deformation area to trigger the execution instruction of the preset electric control electromagnetic valve;

[0026] If yes, the current deformation area corresponding to the rotating knife table is acquired, and based on the execution instruction, the preset temperature range of the current deformation area and the real-time temperature data of the current deformation area are uploaded to the preset programmable controller on the hot spinning device based on the preset transmission channel;

[0027] If the programmable controller determines that the real-time temperature data of the current deformation area is less than the lowest temperature in the preset temperature range of the current deformation area, the firing instruction corresponding to the current deformation area is sent to the preset electric control electromagnetic valve to control the heating gun on the hot spinning device to open and heat;

[0028] If the programmable controller determines that the real-time temperature data of the current deformation area is greater than the highest temperature in the preset temperature range of the current deformation area, the firing instruction corresponding to the current deformation area is sent to the preset electric control electromagnetic valve to control the heating gun on the hot spinning device to close and stop heating.

[0029] Optionally, in one or more embodiments of the present specification, the real-time temperature data of each deformation area is acquired by the plurality of preset infrared temperature measuring instruments, specifically including:

[0030] Based on the preset infrared temperature measuring instrument, a plurality of temperature sampling values of each deformation area are acquired, and the average of the plurality of temperature sampling values is taken as the real-time temperature data sampling value of the deformation area;

[0031] The real-time temperature data sampling value of each deformation area is transmitted based on a plurality of input interfaces of a preset signal input module to store the real-time temperature data of each deformation area in different storage addresses.

[0032] acquire real-time temperature data sample values in each of the different storage addresses based on preset reading instructions, convert the real-time temperature data sample values based on counter instructions corresponding to the preset infrared temperature measuring instrument in the preset programmable controller, and acquire real-time temperature data of each of the deformation regions; and store the real-time temperature data in a memory address of the preset programmable logic controller.

[0033] Optionally, in one or more embodiments of the present specification, after the preset electric control electromagnetic valve controlled by the preset programmable logic controller opens the heat staking gun on the hot spinning equipment and the gas cylinder necking action is performed, the method further comprises:

[0034] determine a spinning reduction amount of each pass in the necking process of the rotary tool table according to a spinning wheel radius of the rotary tool table; wherein the spinning reduction amount is less than the spinning wheel radius;

[0035] control the rotary tool table to perform spinning necking according to a preset tangent arc based on the spinning reduction amount of the pass; wherein the preset tangent arc is an excessive tangent arc between the rotary tool table and a transition region between the bottle mouth and the bottle body, and the range of the excessive tangent arc is 80-150.

[0036] Optionally, in one or more embodiments of the present specification, the profile data of the deformation region image in multiple directions is extracted to obtain the profile line of the deformation region of the gas cylinder to be necked based on the profile data, specifically comprising:

[0037] convert the deformation region image of the gas cylinder to be necked into a deformation region grayscale image, perform filtering operation on the deformation region grayscale image based on a preset Gaussian filter operator, and obtain a grayscale denoising image of the deformation region;

[0038] perform image enhancement processing on the grayscale denoising image based on a preset biorthogonal wavelet transform to obtain a grayscale enhancement image corresponding to the grayscale denoising image;

[0039] obtain a plurality of direction matrices corresponding to a preset multi-direction edge detection algorithm; wherein the plurality of direction matrices are set by a preset direction angle interval, and the size of the direction matrix is set based on a preset calculation amount;

[0040] convolve the deformation region image based on the plurality of direction matrices to extract image feature data of the deformation region image in multiple directions, and acquire gradient amplitudes and gradient directions of each pixel point in the deformation region image based on the image feature data of the deformation region image in multiple directions;

[0041] traverse gradient amplitudes and gradient directions of each pixel point in the deformed region image to determine whether each pixel point has a maximum gradient amplitude to filter non-contour feature data in the deformed region image and obtain contour data to be processed in the deformed region image;

[0042] filter the contour data to be processed based on a preset maximum gradient and a preset minimum gradient to obtain contour data of the deformed region image;

[0043] determine adjacent pixel points of each pixel point based on the contour data of the deformed region image to determine curvatures of each pixel point in a corresponding curve direction based on a positional relationship between the pixel point and the adjacent pixel points;

[0044] obtain a first pixel point with similar curvature, fit the first pixel point into a circular arc curve segment based on a preset fitting algorithm, obtain a second pixel point other than the first pixel point, fit the second pixel point based on an interpolation fitting algorithm to obtain a remaining curve segment, and connect the circular arc curve segment and the remaining curve segment to obtain a contour line of the deformed region of the gas cylinder to be closed.

[0045] Optionally, in one or more embodiments of the present specification, the image enhancement of the deformed gray-scale image based on the preset biorthogonal wavelet transform specifically includes:

[0046] decompose the deformed region gray-scale image based on a biorthogonal wavelet transformer to obtain a low-frequency decomposition image and a high-frequency decomposition image of the deformed region;

[0047] enhance the high-frequency decomposition image based on a preset weight to obtain an initial high-frequency decomposition enhanced image, and adaptively adjust the initial high-frequency decomposition enhanced image based on a pre-set adaptive adjustment operator to obtain a high-frequency decomposition enhanced image of the deformed region;

[0048] move a preset size window to collect gray-scale values of each pixel point in each preset size image region in the low-frequency decomposition image, sequentially obtain pixel gray-scale value differences of each pixel point and distances between each pixel point, and determine image contrast values of each preset size image region according to the pixel gray-scale value differences of each pixel point and the distances between each pixel point;

[0049] divide each preset size image region based on a preset contrast threshold and the image contrast values of each preset size image region to obtain a plurality of contrast layers of the low-frequency decomposition image; wherein the plurality of contrast layers correspond to different contrast intensities;

[0050] According to the definition of the preset contrast threshold, an adaptive enhancement function of multiple contrast layers of the low-frequency decomposition image is determined, and multiple contrast layers of the low-frequency decomposition image are respectively enhanced based on the adaptive enhancement function to obtain a low-frequency decomposition enhanced image of the deformation region.

[0051] The high-frequency decomposition enhanced image and the low-frequency decomposition enhanced image are respectively inverse wavelet transformed to obtain a deformation grayscale enhanced image corresponding to the deformation grayscale image.

[0052] One or more embodiments of the present specification provide a gas cylinder necking device based on multi-region monitoring, the device comprising:

[0053] at least one processor; and

[0054] a memory in communication connection with the at least one processor; wherein

[0055] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to:

[0056] acquire an initial image of a gas cylinder to be necked collected by an image collection device preset on a hot spinning device, to extract a deformation region image of the gas cylinder to be necked in the initial image;

[0057] extract contour data of multiple directions of the deformation region image, to obtain a contour line of a deformation region of the gas cylinder to be necked based on the contour data, determine a split line of multiple deformation regions of the gas cylinder to be necked based on the contour line and a preset deformation region division rule, and set multiple sensors on the split line; wherein the multiple deformation regions include a straight section region of a cylinder mouth, a transition region of the cylinder mouth and a cylinder body, and a cylinder body region.

[0058] divide the deformation region image according to the split line to obtain a region sub-image of each deformation region, determine a deformation condition of the gas cylinder to be necked based on the region sub-image of each deformation region, and determine whether the gas cylinder necking is completed based on the deformation condition; wherein the deformation condition includes deformation radian data of each deformation region.

[0059] In the case that the gas cylinder necking is not completed, position information of a rotating knife table in the hot spinning device is determined based on the multiple sensors, and a current deformation region required for operation of the rotating knife table is determined based on the position information; wherein the rotating knife table in the hot spinning device is installed on a rotating base in the hot spinning device.

[0060] Real-time temperature data of each deformation area collected by the infrared temperature measuring instrument in the hot spinning device is received in real time, and the preset temperature range of the current deformation area and the real-time temperature data of the current deformation area are input into the preset programmable logic controller on the hot spinning device, so that the preset electrical control electromagnetic valve opens the hot air gun on the hot spinning device to perform the cylinder closing action; wherein the positions of the preset infrared temperature measuring instrument correspond to the positions of the straight section area of the bottle mouth, the transition area of the bottle mouth and the bottle body, and the bottle body area, and are connected to the preset programmable controller through the preset input module.

[0061] The one or more embodiments of the present specification provide a non-volatile computer storage medium, which stores computer executable instructions, and the computer executable instructions are configured to:

[0062] An initial image of a gas cylinder to be closed is acquired by an image acquisition device preset on a hot spinning device, so as to extract a deformation area image of the gas cylinder to be closed in the initial image;

[0063] Contour data of multiple directions of the deformation area image is extracted, so as to obtain a contour line of the deformation area of the gas cylinder to be closed based on the contour data, determine a split line of multiple deformation areas of the gas cylinder to be closed based on the contour line and a preset deformation area division rule, and set multiple sensors on the split line; wherein the multiple deformation areas include a straight section area of a bottle mouth, a transition area of the bottle mouth and a bottle body, and a bottle body area;

[0064] The deformation area image is divided according to the split line, so as to obtain a region sub-image of each deformation area, determine a deformation condition of the gas cylinder to be closed based on the region sub-image of each deformation area, and determine whether the gas cylinder closing is completed based on the deformation condition; wherein the deformation condition includes deformation curvature data of each deformation area;

[0065] In the case that the gas cylinder closing is not completed, position information of a rotating knife table in the hot spinning device is determined based on the multiple sensors, and a current deformation area required to be operated by the rotating knife table is determined based on the position information; wherein the rotating knife table in the hot spinning device is installed on a rotating base in the hot spinning device;

[0066] Real-time temperature data of each deformation region collected by the infrared thermometer in the hot spinning device is received in real time, so that the preset temperature range of the current deformation region and the real-time temperature data of the current deformation region are input into the preset programmable logic controller on the hot spinning device, so that the preset electric control electromagnetic valve opens the heating gun on the hot spinning device to perform the cylinder closing action; wherein the positions of the preset infrared thermometer correspond to the positions of the bottle mouth straight section region, the transition region of the bottle mouth and the bottle body, and the bottle body region respectively, and are connected to the preset programmable controller through a preset input module.

[0067] The above at least one technical solution adopted by the embodiments of the present specification can achieve the following beneficial effects:

[0068] By dividing the collected deformation region image of the bottle to be closed into multiple deformation regions, the temperature monitoring of the deformation regions with different deformation amounts during the cylinder closing process is facilitated, the problem that the deformation amounts required by different deformation regions are different and thus different heating temperatures are required in the prior art is avoided, and the deformation amount requirement of the cylinder closing is improved. Through real-time temperature data monitoring of each deformation region by the pre-set infrared thermometer, the problem of high labor cost caused by manual measurement in the prior art is avoided. The preset temperature range of different regions and the collected real-time temperature data are transmitted into the programmable controller, so as to control the electric control electromagnetic valve to open when the rotating blade reaches the division line detected by the multiple sensors based on the programmable controller, control the opening of the flame gun for temperature compensation, so that the regions requiring different deformation amounts can meet the temperature requirement during the closing process, and the stability of the heating closing process is improved. BRIEF DESCRIPTION OF DRAWINGS

[0069] In order to more clearly illustrate the technical solutions in the embodiments of the present specification or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present specification, and other drawings can also be obtained according to these drawings without creative labor. In the drawings:

[0070] Figure 1 A method flowchart of a cylinder closing method based on multi-region monitoring provided by the embodiments of the present specification;

[0071] Figure 2 A schematic diagram of the positional relationship between the infrared thermometer and each deformation region of the bottle to be closed provided by the embodiments of the present specification;

[0072] Figure 3A schematic diagram of the internal structure of a gas cylinder closing device based on multi-area monitoring, provided as an embodiment of this specification;

[0073] Figure 4 This is a schematic diagram of the internal structure of a non-volatile storage medium provided in the embodiments of this specification. Detailed Implementation

[0074] This specification provides a method, device, and medium for gas cylinder sealing based on multi-area monitoring.

[0075] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments of this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0076] like Figure 1 As shown, this specification provides a flowchart illustrating a method for closing gas cylinders based on multiple monitoring areas in one or more embodiments. Figure 1 As can be seen, one or more embodiments of this specification provide a gas cylinder capping method based on multi-area monitoring, which includes the following steps:

[0077] S101: Obtain an initial image of the gas cylinder to be closed from an image acquisition device pre-placed on a hot spinning device, so as to extract the deformation area image of the gas cylinder to be closed from the initial image.

[0078] Currently, most thermoforming technologies for gas cylinders, such as those made of aluminum alloy and stainless steel, rely on manual heating. This method fails to consider the varying degrees of deformation in different areas during hot processing, and the use of handheld temperature guns for inspection results in low accuracy and poor process stability. To address the different temperatures required for deformation in different areas during cylinder necking and reduce the high costs of manual inspection, this specification first acquires the deformation data of the cylinder to be necked, thereby determining the required temperatures for each area. Specifically, it first acquires an initial image of the cylinder to be necked from an image acquisition device pre-placed on a hot spinning equipment. Then, it extracts the deformation area images of the cylinder from the initial image. In other words, based on pre-set deformation area ranges for different cylinder models, the images of the deformation areas corresponding to the necking process are extracted from the initial image as the deformation area images.

[0079] S102: extract contour data of the deformation region image in multiple directions, to obtain a contour line of the deformation region of the gas cylinder to be closed based on the contour data, determine a split line of multiple deformation regions of the gas cylinder to be closed based on the contour line and a preset deformation region division rule, and set multiple sensors on the split line; wherein the multiple deformation regions include a straight section region of a cylinder mouth, a transition region between the cylinder mouth and a cylinder body, and a cylinder body region.

[0080] Since the deformation amount required by different regions is different, the temperature required by each region is different, for example, the deformation amount of the straight section region of the cylinder mouth is large and requires a higher temperature, while the deformation of the cylinder body region requires sufficient deformation resistance to prevent instability phenomenon caused by the rotation axial force, so a lower temperature is required, and the transition region between the cylinder mouth and the cylinder body requires a smooth transition of the temperature from the cylinder mouth to the cylinder body region. In order to realize the monitoring of different temperatures in different deformation regions and make the closing process more stable and the precision of the processed gas cylinder higher, the contour data of the deformation region image in multiple directions is extracted in the embodiments of the present specification. It should be noted that the contour data contains the position of each pixel point and the gray scale information of the pixel point, and after obtaining the contour data, the contour line of the deformation region of the gas cylinder to be closed can be obtained according to the position of each pixel point in the contour data, and then the contour line is divided into multiple deformation regions of the gas cylinder to be closed by the preset deformation region division rule, and multiple sensors are set on the split line. It should be noted that, as shown in Figure 2 the multiple deformation regions include the straight section region of the cylinder mouth, the transition region between the cylinder mouth and the cylinder body, and the cylinder body region.

[0081] Specifically, in order to improve the accuracy of contour line extraction and the accuracy of subsequent division of different temperature zones, in one or more embodiments of the present specification, the contour data of the deformation region image in multiple directions is extracted to obtain the contour line of the deformation region of the gas cylinder to be closed based on the contour data, and specifically includes the following processes:

[0082] Firstly, based on the industrial camera shooting gas cylinder image, affected by the factory processing, shooting environment, light intensity and other factors, so that the deformation area image obtained exists interference, resulting in the image is not clear, and then cause based on the deformation area obtained by the mouth of the gas cylinder contour line is not accurate. Therefore, in order to reduce the interference of noise in the image, the deformation area image of the gas cylinder to be collected is obtained. The binary threshold between the pre set gas cylinder to be collected and the processing background is set, and then the binary threshold is used to process the deformation area image of the gas cylinder to be collected, so as to convert the deformation area image into a deformation area gray image. Then, according to the pre set Gaussian filter operator, the deformation area gray image obtained above is filtered, so as to reduce the influence of noise in the image on the detection result, and obtain the gray denoising image of the deformation area. In order to obtain more clear contour line of the gas cylinder to be collected, it is necessary to carry out image enhancement processing on the gray denoising image according to the pre set biorthogonal wavelet transform, and obtain the gray enhanced image corresponding to the gray denoising image. Then, a plurality of direction matrices corresponding to the pre set multi direction edge detection algorithm are obtained, each direction matrix is used as a convolution kernel to carry out convolution operation on the deformation area image, so as to extract the image feature data of multiple directions in the deformation area image. Based on the image feature data of multiple directions of the deformation area image, the gradient amplitude and gradient direction of each pixel point in the deformation area image are obtained. It should be noted that the plurality of direction matrices are set by pre setting direction angle interval, and the size of the direction matrix is set based on the pre design calculation amount. By customizing the number and size of the direction matrix, the accuracy of the edge contour information of the gas cylinder to be collected obtained by detection can be dynamically adjusted based on actual demand, so as to ensure the reliability of the detection process.

[0083] After the gradient amplitude and the gradient direction of each pixel point in the deformed region image are obtained, the gradient amplitude and the gradient direction of each pixel point in the deformed region image are traversed, so as to determine whether each pixel point has a maximum gradient amplitude, and if so, the point is taken as the to-be-processed contour data belonging to the contour data in the deformed region image, and the non-contour feature data without the maximum gradient amplitude is filtered. Then, the to-be-processed contour data is filtered according to the preset maximum gradient and the preset minimum gradient, so as to obtain the contour data of the deformed region image. The adjacent pixel points of each pixel point are determined according to the contour data of the deformed region image, so as to determine the position relationship between the pixel points and the adjacent pixel points. Since the continuous points with similar curvatures on the contour come from the same circular arc line, the curvature in the curve direction of each pixel point is determined, the first pixel point with similar curvature is obtained, and the first pixel point is fitted into a circular arc curve segment based on a preset fitting algorithm. And the second pixel point except the first pixel point is obtained, and the second pixel point is fitted based on an interpolation fitting algorithm, so as to obtain a remaining curve segment. Based on the position matching relationship between each circular arc curve end and each line segment end point in each remaining curve segment, the obtained circular arc curve segment and the obtained remaining curve segment are connected, so as to obtain the contour line of the deformed region of the to-be-closed gas cylinder.

[0084] Further, in order to enhance the clarity of the contour line, in the embodiment of the present specification, the deformed gray scale image is enhanced based on a preset biorthogonal wavelet transform, which specifically includes the following steps:

[0085] Firstly, the deformed region gray scale image obtained in the above step is decomposed according to a preset biorthogonal wavelet transformer, so as to obtain a low-frequency decomposition image and a high-frequency decomposition image of the deformed region. Then, in order to enhance the detail information in the image, the high-frequency decomposition image is enhanced according to a preset weight to obtain an initial high-frequency decomposition enhanced image, and the initial high-frequency decomposition enhanced image is adaptively adjusted based on a preset adaptive adjustment operator, so as to obtain a high-frequency decomposition enhanced image of the deformed region.

[0086] In addition, in order to adjust the problem of inaccurate profile data caused by brightness, in the embodiments of the present specification, the gray values of each pixel point in each preset size image region in the low frequency decomposition image are moved by a preset size window. Then the pixel gray value difference of each pixel point and the distance between each pixel point are obtained in turn, so as to determine the image contrast value of each preset size image region according to the pixel gray value difference of each pixel point and the distance between each pixel point. Then, according to the preset contrast threshold and the image contrast value of each preset size image region, each preset size image region is divided to obtain a plurality of contrast layers of the low frequency decomposition image. It can be understood that the plurality of contrast layers correspond to different contrast intensities. Then, according to the definition of the preset contrast threshold, the adaptive enhancement function of the plurality of contrast layers of the low frequency decomposition image is determined, so as to respectively perform enhancement processing on the plurality of contrast layers of the low frequency decomposition image according to the adaptive enhancement function, and obtain a low frequency decomposition enhanced image of the deformation region. The high frequency decomposition enhanced image and the low frequency decomposition enhanced image are respectively inverse wavelet transformed to obtain a deformation gray enhanced image corresponding to the deformation gray image.

[0087] Specifically, in order to realize the monitoring of different temperature zones of the gas cylinder to be detected, in one or more embodiments of the present specification, based on the contour line and a preset deformation region division rule, a split line of a plurality of deformation regions of the gas cylinder to be closed is determined, and a plurality of sensors are arranged on the split line, specifically including the following steps:

[0088] Firstly, the symmetric continuous line segment in the contour line is extracted, and the symmetric axis of the symmetric continuous line segment and the single-sided symmetric continuous line segment are obtained. That is, the most symmetric line segment in the contour line of the gas cylinder to be closed is obtained as the symmetric continuous line segment, and the two symmetric line segments in the contour line of the gas cylinder to be closed are the symmetric continuous line segments, and one of the two line segments is the single-sided symmetric continuous line segment. A plurality of inflection points of the single-sided symmetric continuous line segment are obtained respectively, and the position information of each inflection point is determined. As shown in the following figure, Figure 2 It should be noted that in the embodiments of the present specification, the inflection point can be the intersection of a straight line segment and a curve segment, that is, the point in the curve where the slope changes from 0 to a value, or the intersection of a curve segment and a curve segment, that is, the point in the curve where the slope changes from negative to positive, and the two types of points are regarded as inflection points in the embodiments of the present specification. Then, according to the position information of each inflection point and the symmetric axis of the symmetric continuous line segment, the symmetric inflection points in the two single-sided symmetric continuous line segments are determined, and the connecting line corresponding to the symmetric inflection points is taken as the split line of the plurality of deformation regions of the gas cylinder, so as to arrange a plurality of sensors on the split line. That is, as shown in the following figure, Figure 2As shown in the application scenario of the present specification, in the single-side symmetric continuous line segment 1, the inflection point 1 is a point where the slope of the curve changes from 0 to a slope with a value, the inflection point 2 is a point where the slope of the curve changes from a negative value to a positive value, the inflection point 3 in the single-side symmetric continuous line segment 2 symmetric to the single-side symmetric continuous line segment 1 is a point where the slope of the curve changes from 0 to a slope with a value, and the inflection point 4 is a point where the slope of the curve changes from a negative value to a positive value. The inflection point 1 and the inflection point 3 correspond to each other, and the line segment connecting the two is a dividing line. Similarly, the inflection point 2 and the inflection point 4 correspond to each other, and the line segment connecting the two is another dividing line.

[0089] S103: dividing the deformation region image according to the dividing line to obtain a region sub-image of each deformation region, determining a deformation condition of the gas cylinder to be closed according to the region sub-image of each deformation region, and determining whether the gas cylinder is closed according to the deformation condition; wherein the deformation condition includes deformation radian data of each deformation region.

[0090] As shown in the application scenario of the present specification, in the single-side symmetric continuous line segment 1, the inflection point 1 is a point where the slope of the curve changes from 0 to a slope with a value, the inflection point 2 is a point where the slope of the curve changes from a negative value to a positive value, the inflection point 3 in the single-side symmetric continuous line segment 2 symmetric to the single-side symmetric continuous line segment 1 is a point where the slope of the curve changes from 0 to a slope with a value, and the inflection point 4 is a point where the slope of the curve changes from a negative value to a positive value. The inflection point 1 and the inflection point 3 correspond to each other, and the line segment connecting the two is a dividing line. Similarly, the inflection point 2 and the inflection point 4 correspond to each other, and the line segment connecting the two is another dividing line. Figure 2 According to the dividing line in step S102, the deformation region image is divided to obtain a region sub-image of each deformation region, and the deformation condition of the gas cylinder to be closed is determined according to the region sub-image of each deformation region. That is, when the deformation condition data includes deformation radian data of each deformation region, if the deformation radian data of each deformation region at present does not conform to the deformation radian value set in advance, it indicates that the current deformation has not been completed. When the deformation condition data includes diameter data of each region of the gas cylinder to be closed, if the diameter data of each region at present does not conform to the diameter value set in advance, it also indicates that the current deformation has not been completed.

[0091] Optionally, in one or more embodiments of the present specification, after determining the deformation condition of the gas cylinder to be closed based on the region sub-image of each deformation region, the method further includes the following steps:

[0092] First, the material composition of the to-be-necked gas cylinder is obtained; it should be noted that in the embodiments of the present application, the material composition of the to-be-necked gas cylinder is aluminum alloy, and the specific chemical composition of the material composition is Si: 0.40-0.80%, Fe≤0.70%, Cu: 0.15-0.40%, Mn≤0.15, Mg: 0.80-1.20%, Cr: 0.04-0.35%, Zn≤0.25%, Ti≤0.15%. In addition, in some application scenarios of the present application, the material composition of the to-be-necked gas cylinder can also be titanium alloy, and the material of the to-be-necked gas cylinder will only affect the pre-set temperature range of each deformation region and the necking process, and the other steps of deformation region division and deformation region temperature monitoring are the same. Therefore, after obtaining the material composition of the to-be-necked gas cylinder, the material information corresponding to the to-be-necked gas cylinder and the processing temperature threshold value need to be determined. It should be noted that the material information includes: yield strength under pressure, elastic coefficient and other related information, and the processing temperature threshold value is 550°C. Then, according to the region sub-image of each deformation region obtained in the above steps, the deformation condition of the to-be-necked gas cylinder is determined, so as to determine the deformation amount required by each deformation region of the to-be-necked gas cylinder by comparing the deformation condition of the to-be-necked gas cylinder with the standard necking deformation condition of the to-be-necked gas cylinder.

[0093] After obtaining the maximum deformation amount of each deformation region, the hot forming necking process of the to-be-necked gas cylinder is simulated based on the material information and the maximum deformation amount of each deformation region within the processing temperature threshold value range, so as to obtain the relationship between the temperature field and the stress field corresponding to the to-be-necked gas cylinder. Then, according to the deformation amount required by each deformation region of the to-be-necked gas cylinder, the limit roller axial force corresponding to each deformation region is determined. Based on the relationship between the temperature field and the stress field and the limit roller axial force corresponding to each deformation region, the preset temperature range of each deformation region of the to-be-necked gas cylinder is determined; it should be noted that: the preset temperature range is less than the processing temperature threshold value, and the preset temperature range is: the preset temperature range of the straight section region of the cylinder nozzle is 500-540°C, the preset temperature range of the transition region between the cylinder nozzle and the cylinder body is 460-500°C, and the preset temperature range of the cylinder body region is 420-460°C.

[0094] S104: In the case where the gas cylinder necking is not completed, the position information of the rotating knife table in the hot spinning equipment is determined based on the plurality of sensors, so as to determine the current deformation region required by the rotating knife table based on the position information; wherein the rotating knife table in the hot spinning equipment is installed on the rotating base in the hot spinning equipment.

[0095] If it is determined that the gas cylinder necking work of the to-be-necked gas cylinder is not completed based on the step S103, since the rotating knife table moves between each deformation region during the spinning process of the to-be-necked gas cylinder, in order to enable each region of the to-be-processed gas cylinder to be at an appropriate hot working temperature for spinning work, in the embodiment of the present specification, in the case where the gas cylinder necking is not completed, the position information of the rotating knife table in the hot spinning equipment needs to be determined according to the plurality of sensors arranged on the segmentation line, so as to determine the current deformation region to be operated by the rotating knife table based on the position information. It should be noted that the rotating knife table in the hot spinning equipment is installed on the rotating base in the hot spinning equipment.

[0096] S105: Real-time temperature data of each deformation region collected by the infrared temperature measuring instrument in the hot spinning equipment is received in real time, so as to input the preset temperature range of the current deformation region and the real-time temperature data of the current deformation region into the preset programmable logic controller on the hot spinning equipment, so as to control the preset electrical control electromagnetic valve to open the heating gun on the hot spinning equipment through the preset programmable logic controller, and perform the gas cylinder necking action; wherein the positions of the preset infrared temperature measuring instruments correspond to the positions of the straight section region of the nozzle, the transition region of the nozzle and the bottle body, and the bottle body region respectively, that is, three infrared temperature measuring instruments are arranged at positions corresponding to the three regions respectively to collect temperature, and a preset input module and a preset programmable controller are used.

[0097] Based on the above step of adjusting the sensor position, the interfacial segmentation position of different regions is determined, and the sensor is fixed after the position is determined. After the multi-region position setting is completed, in order to realize the processing temperature of different deformation regions, the heating gun is automatically controlled to open and close according to the heating temperature, so as to achieve the purpose of automatic hot forming of multi-region monitoring. In the embodiment of the present specification, real-time temperature data of each deformation region collected by the infrared temperature measuring instrument in the hot spinning equipment is received in real time, so as to input the preset temperature range of the current deformation region and the real-time temperature data of the current deformation region into the preset programmable logic controller on the hot spinning equipment, and control the preset electrical control electromagnetic valve to open the heating gun on the hot spinning equipment through the preset programmable logic controller, and perform the gas cylinder necking action; it should be noted that, as shown in Figure 2 the positions of the preset infrared temperature measuring instruments correspond to the positions of the straight section region of the nozzle, the transition region of the nozzle and the bottle body respectively, and a preset input module and a preset programmable controller are used.

[0098] Specifically, in one or more embodiments of the present specification, real-time temperature data of each deformation region collected by an infrared temperature measuring instrument in a hot spinning device is received in real time, and a preset temperature range of a current deformation region and real-time temperature data of the current deformation region are input into a preset programmable logic controller on the hot spinning device, so as to control a preset electric control electromagnetic valve to open a heating gun on the hot spinning device to perform a cylinder closing action, specifically including the following steps:

[0099] First, real-time temperature data of each deformation region is obtained according to a plurality of preset infrared temperature measuring instruments. Then, a plurality of sensors are set on the segmentation line to monitor the rotating knife table, so as to obtain position data and moving direction of the rotating knife table in real time. According to the position data and the moving direction, it is determined whether the moving knife table crosses the deformation region, so as to trigger an execution instruction of the preset electric control electromagnetic valve. For example, according to the position data, it is determined that the moving knife table is located between the bottle mouth straight section region and the transition region between the bottle mouth and the bottle body, and the moving direction is the direction of getting closer to the transition region between the bottle mouth and the bottle body. Therefore, the moving knife table is currently realizing the crossing from the bottle mouth straight section region to the transition region between the bottle mouth and the bottle body, and the execution instruction of the preset electric control electromagnetic valve is triggered at this time. The current deformation region corresponding to the rotating knife table is obtained, and the preset temperature range of the current deformation region and the real-time temperature data of the current deformation region are uploaded to the preset programmable controller on the hot spinning device based on a preset transmission channel based on the execution instruction. If the programmable controller determines that the real-time temperature data of the current deformation region is less than the lowest temperature in the preset temperature range of the current deformation region, the firing instruction corresponding to the current deformation region is sent to the preset electric control electromagnetic valve, so as to open the heating gun on the hot spinning device based on the electric control electromagnetic valve to perform heating. On the contrary, if the programmable controller determines that the real-time temperature data of the current deformation region is greater than the highest temperature in the preset temperature range of the current deformation region, the fire-off instruction corresponding to the current deformation region is sent to the preset electric control electromagnetic valve, so as to control the heating gun on the hot spinning device to stop heating.

[0100] Further, in one or more embodiments of the present specification, real-time temperature data of each deformation region is obtained according to a plurality of preset infrared temperature measuring instruments, specifically including the following steps:

[0101] The preset infrared temperature measuring instrument obtains a plurality of temperature sampling values of each deformation area, and the average of the plurality of temperature sampling values is taken as a real-time temperature data sampling value of the deformation area. Then the real-time temperature data sampling value of each deformation area is transmitted based on a plurality of input interfaces of a preset signal input module, so as to store the real-time temperature data of each deformation area in different storage addresses. The real-time temperature data sampling value in each different storage address is obtained based on a preset reading instruction, and the real-time temperature data sampling value is converted based on a counter instruction corresponding to the preset infrared temperature measuring instrument in the preset programmable controller, to obtain the real-time temperature data of each deformation area, and store the real-time temperature data into a memory address of the preset programmable logic controller.

[0102] Specifically, in some application scenarios of the present specification, a plurality of signal input modules of an infrared temperature measuring instrument are configured on a programmable logic controller, and channels of the signal input modules are set as storage addresses of different temperature zones, such as temperature zone one, temperature zone two, temperature zone three, and the like. The values read by the temperature sensor are stored in the programmable logic controller by using a TO instruction, and then the values are converted by using a program, and the values are read out by using a FROM instruction to be displayed on a display screen. The values input on the touch screen are stored in the memory address of the programmable logic controller by using a MOV instruction. The actual temperature is compared with the preset preheating temperature value by using a comparison judgment command, and if it is greater than the preset temperature, the programmable logic controller will give a signal to the numerical control machine to execute a closing action. X0 and X5 in the program are signal points of the programmable logic controller executed by the numerical control machine to execute corresponding program segments. When the sensor baffle passes the sensor once, a signal point is triggered and the corresponding program is executed. The temperature of each area is different, if the temperature is higher than the preset temperature, the signal will be fed back to make the heating program closed to cool down, if the temperature is lower than the preset temperature, the heating program will be opened for heating, and when the numerical control machine returns through the sensor, the previous program will be restored to the OFF state, so as to achieve multi-point monitoring and automatic hot forming control.

[0103] Further, after realizing temperature monitoring of a plurality of temperature zones, in one or more embodiments of the present specification, after the programmable logic controller controls the preset electric control electromagnetic valve to open the heating gun on the hot spinning equipment and the gas cylinder closing action is performed, the method further includes the following process:

[0104] According to the spinning wheel radius of the rotating knife table, the spinning reduction of each pass in the closing process of the rotating knife table is determined; it should be noted that the spinning reduction is less than the spinning wheel radius. Then the rotating knife table is controlled to spin and close according to the spinning reduction of the pass and the preset tangent radian; it should be noted that the preset tangent radian is the tangent radian between the rotating knife table and the transition area between the nozzle and the bottle body, and the range of the tangent radian is 80-150.

[0105] As Figure 3 shown in the specification one or more embodiments provide an internal structure schematic diagram of a gas cylinder necking-in equipment based on multi-region monitoring. By Figure 3 known, a gas cylinder necking-in equipment based on multi-region monitoring, characterized in that the equipment comprises:

[0106] at least one processor; and,

[0107] a memory in communication connection with the at least one processor; wherein,

[0108] the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to:

[0109] acquire an initial image of a gas cylinder to be necked-in collected by an image collection device preset on a hot spinning equipment, to extract a deformation region image of the gas cylinder to be necked-in in the initial image;

[0110] extract contour data of multiple directions of the deformation region image, to obtain a contour line of a deformation region of the gas cylinder to be necked-in based on the contour data, determine a split line of multiple deformation regions of the gas cylinder to be necked-in based on the contour line and a preset deformation region division rule, and set multiple sensors on the split line; wherein the multiple deformation regions include a nozzle straight section region, a transition region of a nozzle and a body, and a body region;

[0111] divide the deformation region image according to the split line to obtain a region sub-image of each of the deformation regions, determine a deformation condition of the gas cylinder to be necked-in based on the region sub-image of each of the deformation regions, and determine whether the gas cylinder necking-in is completed based on the deformation condition; wherein the deformation condition includes deformation radian data of each of the deformation regions;

[0112] in the case where the gas cylinder necking-in is not completed, determine position information of a rotating knife table in the hot spinning equipment based on the multiple sensors, to determine a current deformation region required for operation of the rotating knife table based on the position information; wherein the rotating knife table in the hot spinning equipment is installed on a rotating base in the hot spinning equipment;

[0113] Real-time temperature data of each deformation area collected by the infrared temperature detector in the hot spinning device is received in real time, so that the preset temperature range of the current deformation area and the real-time temperature data of the current deformation area are input into the preset programmable logic controller on the hot spinning device, so that the preset electric control electromagnetic valve opens the heating gun on the hot spinning device to perform the cylinder closing action; wherein the positions of the preset infrared temperature detector correspond to the positions of the straight section area of the cylinder mouth, the transition area of the cylinder mouth and the cylinder body, and the cylinder body area, and are connected to the preset programmable controller through the preset input module.

[0114] As shown in Figure 4 , one or more embodiments of the present specification provide a schematic diagram of the internal structure of a non-volatile storage medium. It can be known that a non-volatile storage medium stores computer executable instructions, and the computer executable instructions can: Figure 4

[0115] An initial image of a cylinder to be closed collected by an image collection device preset on a hot spinning device is acquired to extract a deformation area image of the cylinder to be closed in the initial image;

[0116] Contour data of the deformation area image in multiple directions is extracted to obtain a contour line of the deformation area of the cylinder to be closed based on the contour data, determine a split line of multiple deformation areas of the cylinder to be closed based on the contour line and a preset deformation area division rule, and set multiple sensors on the split line; wherein the multiple deformation areas include a straight section area of a cylinder mouth, a transition area of the cylinder mouth and a cylinder body, and a cylinder body area;

[0117] The deformation area image is divided according to the split line to obtain a region sub-image of each deformation area, the deformation condition of the cylinder to be closed is determined based on the region sub-image of each deformation area, and whether the cylinder closing is completed is determined based on the deformation condition; wherein the deformation condition includes deformation curvature data of each deformation area;

[0118] In the case where the cylinder closing is not completed, the position information of a rotating knife table in the hot spinning device is determined based on the multiple sensors, the current deformation area required for operation of the rotating knife table is determined based on the position information; wherein the rotating knife table in the hot spinning device is installed on a rotating base in the hot spinning device;

[0119] ​Real-time temperature data of each deformation area collected by the infrared thermometer in the hot spinning device is received in real time, and the preset temperature range of the current deformation area and the real-time temperature data of the current deformation area are input into the preset programmable logic controller on the hot spinning device, so that the preset electrical control electromagnetic valve opens the hot air gun on the hot spinning device to perform the cylinder closing action; wherein the positions of the preset infrared thermometer correspond to the positions of the bottle mouth straight section area, the transition area of the bottle mouth and the bottle body, and the bottle body area respectively, and are connected with the preset programmable controller through a preset input module.

[0120] Each embodiment in the specification is described in a progressive manner, and the same and similar parts between each embodiment can be referred to each other. Each embodiment focuses on the difference from other embodiments. In particular, for the device, equipment and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the part of the method embodiment.

[0121] The above describes specific embodiments of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that in the embodiments and still achieve the desired result. In addition, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or can be advantageous.

[0122] The above only describes one or more embodiments of the specification and does not limit the specification. One or more embodiments of the specification can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of one or more embodiments of the specification shall be included in the scope of the claims of the specification.

Claims

1. A method for closing gas cylinders based on multi-area monitoring, characterized in that, The method includes: Acquire an initial image of the gas cylinder to be sealed by an image acquisition device pre-placed on a hot spinning equipment, and extract the deformation area image of the gas cylinder to be sealed from the initial image; Contour data from multiple directions of the deformed region image are extracted to obtain the contour line of the deformed region of the gas cylinder to be closed based on the contour data. Based on the contour line and a preset deformed region division rule, the dividing lines of multiple deformed regions of the gas cylinder to be closed are determined, and multiple sensors are set on the dividing lines. The multiple deformed regions include: the straight section of the nozzle, the transition area between the nozzle and the body, and the body area. The deformed region image is divided according to the dividing line to obtain a sub-image of each deformed region. The deformation state of the gas cylinder to be closed is determined based on the sub-image of each deformed region, and the closure of the gas cylinder is determined based on the deformation state. The deformation state includes the deformation curvature data of each deformed region. If the gas cylinder necking is not completed, the position information of the rotating blade in the hot spinning equipment is determined based on the multiple sensors, so as to determine the current deformation area to be operated by the rotating blade based on the position information; wherein, the rotating blade in the hot spinning equipment is mounted on the rotating base in the hot spinning equipment; The system receives real-time temperature data from infrared thermometers in the hot spinning equipment for each deformation region. It then inputs the preset temperature range of the current deformation region and the real-time temperature data of the current deformation region into a preset programmable logic controller (PLC) on the hot spinning equipment. The PLC controls the preset electrical control solenoid valve to open the heating gun on the hot spinning equipment, thus performing the cylinder closing action. The positions of the preset infrared thermometers correspond to the positions of the straight section of the cylinder nozzle, the transition area between the nozzle and the cylinder body, and the cylinder body area, respectively, and are connected to the preset PLC via a preset input module.

2. The gas cylinder closing method based on multi-area monitoring according to claim 1, characterized in that, The process involves determining the dividing lines of multiple deformation regions of the gas cylinder to be closed based on the contour line and a preset deformation region division rule, and setting multiple sensors on the dividing lines, specifically including: Extract symmetrical continuous line segments from the contour line, and obtain the axis of symmetry and unilateral symmetrical continuous line segments of the symmetrical continuous line segments; Multiple inflection points of the single-sided symmetrical continuous line segment are obtained respectively, and the position information of each inflection point is determined; Based on the position information of each inflection point and the axis of symmetry of the symmetrical continuous line segment, the symmetrical inflection point in the two unilateral symmetrical continuous line segments is determined, and the connecting line corresponding to the symmetrical inflection point is used as the dividing line of multiple deformation areas of the gas cylinder, so as to set multiple sensors on the dividing line.

3. The gas cylinder closing method based on multi-area monitoring according to claim 1, characterized in that, After determining the deformation state of the gas cylinder to be closed based on the sub-images of each of the deformed regions, the method further includes: The material composition of the gas cylinder to be sealed is determined; wherein, the material composition of the gas cylinder to be sealed is aluminum alloy; the specific chemical composition of the material is Si: 0.40~0.80%, Fe: 0.70%, Cu: 0.15~0.40%, Mn 0.15%, Mg: 0.80~1.20%, Cr: 0.04~0.35%, Zn 0.25%, Ti 0.15%; The material information and processing temperature threshold corresponding to the gas cylinder to be sealed are determined; wherein, the material information includes: compressive yield strength and elastic modulus; and the processing temperature threshold is 550℃. Based on the sub-images of each of the deformed regions, the deformation state of the gas cylinder to be closed is determined, and the required deformation amount of each of the deformed regions of the gas cylinder to be closed is determined by comparing the deformation state of the gas cylinder to be closed with the standard closing deformation state of the preset gas cylinder to be closed. The maximum deformation of the deformation region is obtained. Based on the material information and the maximum deformation of each deformation region within the processing temperature threshold range, the thermoforming and sealing process of the gas cylinder to be sealed is simulated to obtain the relationship between the temperature field and the stress field corresponding to the gas cylinder to be sealed. Based on the required deformation amount of each deformation region of the gas cylinder to be closed, determine the limiting axial force of the rotating wheel corresponding to each deformation region; Based on the relationship between the temperature field and the stress field, and the axial force of the limiting wheel corresponding to each deformation region, the preset temperature range of each deformation region in the gas cylinder to be closed is determined; wherein, the preset temperature range is less than the processing temperature threshold, and the preset temperature range is: 500-540℃ for the straight section of the nozzle, 460-500℃ for the transition region between the nozzle and the cylinder body, and 420-460℃ for the cylinder body region.

4. The gas cylinder closing method based on multi-area monitoring according to claim 1, characterized in that, The real-time reception of real-time temperature data from the infrared thermometer in the hot spinning equipment for each deformation region, and inputting the preset temperature range of the current deformation region and the real-time temperature data of the current deformation region into a preset programmable logic controller (PLC) on the hot spinning equipment, so that the PLC controls the preset electrical control solenoid valve to open the heating gun on the hot spinning equipment to perform the gas cylinder closing action, specifically includes: Real-time temperature data of each of the deformation regions are obtained using multiple preset infrared thermometers. Multiple sensors installed along the dividing line monitor the rotating tool holder to obtain its position data and direction of movement. Based on the position data and direction of movement, the system determines whether the rotating tool holder crosses the deformation area, thereby triggering the execution command of a preset electrical control solenoid valve. If so, the current deformation area corresponding to the rotary tool table is obtained, and the preset temperature range of the current deformation area and the real-time temperature data of the current deformation area are uploaded to the preset programmable controller on the hot spinning equipment based on the execution instruction and the preset transmission channel. If the programmable controller determines that the real-time temperature data of the current deformation area is less than the lowest temperature within the preset temperature range of the current deformation area, it sends the firing command corresponding to the current deformation area to the preset electrical control solenoid valve to control the heating gun on the hot spinning equipment to turn on for heating. If the programmable controller determines that the real-time temperature data of the current deformation area is greater than the highest temperature within the preset temperature range of the current deformation area, it sends the shut-off command corresponding to the current deformation area to the preset electrical control solenoid valve to control the heating gun on the hot spinning equipment to shut off and stop heating.

5. A gas cylinder closing method based on multi-zone monitoring according to claim 4, characterized in that, The step of acquiring real-time temperature data of each of the deformed regions using multiple preset infrared thermometers specifically includes: Based on the preset infrared thermometer, multiple temperature sampling values ​​of each of the deformation regions are obtained, and the average of the multiple temperature sampling values ​​is used as the real-time temperature data sampling value of the deformation region. The real-time temperature data sampling values ​​of each of the deformed regions are transmitted through multiple input interfaces of the preset signal input module so that the real-time temperature data of each deformed region is stored in different storage addresses. The real-time temperature data sample values ​​in each of the different storage addresses are obtained based on the preset read instructions. The real-time temperature data sample values ​​are then converted based on the counter instructions in the preset programmable controller corresponding to the preset infrared thermometer to obtain the real-time temperature data of each of the deformed regions. The real-time temperature data is then stored in the memory address of the preset programmable logic controller.

6. The gas cylinder closing method based on multi-temperature zone monitoring according to claim 1, characterized in that, After the method involves controlling the pre-set electrical control solenoid valve via the pre-set programmable logic controller to open the heating gun on the hot spinning equipment and perform the gas cylinder closing action, the method further includes: The amount of spin pressing down per pass during the closing process of the rotary tool table is determined based on the radius of the rotary wheel; wherein the amount of spin pressing down is less than the radius of the rotary wheel; The rotary cutting table is controlled to perform spinning and closing according to a preset tangent arc based on the spinning reduction amount of the passing pass; wherein, the preset tangent arc is the transition tangent arc between the rotary cutting table and the transition area between the bottle mouth and the bottle body, and the range of the transition tangent arc is 80~150.

7. A method for closing gas cylinders based on multi-area monitoring according to claim 1, characterized in that, The step of extracting contour data from multiple directions of the deformed region image to obtain the contour line of the deformed region of the gas cylinder to be closed based on the contour data specifically includes: The deformed region image of the gas cylinder to be closed is converted into a grayscale image of the deformed region. The grayscale image of the deformed region is then filtered based on a preset Gaussian filter operator to obtain a grayscale denoised image of the deformed region. The grayscale denoised image is enhanced by a preset bioorthogonal wavelet transform to obtain a grayscale enhanced image corresponding to the grayscale denoised image. Obtain multiple direction matrices corresponding to a preset multi-directional edge detection algorithm; wherein, the multiple direction matrices are set by a preset direction angle interval, and the size of the direction matrix is ​​set based on a preset computational load; Convolve the deformed region image based on the multiple direction matrices to extract image feature data of the deformed region image in multiple directions. Based on the image feature data of the deformed region image in multiple directions, obtain the gradient magnitude and gradient direction of each pixel in the deformed region image. The gradient magnitude and gradient direction of each pixel in the deformed region image are traversed to determine whether each pixel has a maximum gradient magnitude, thereby filtering out non-contour feature data in the deformed region image and obtaining contour data to be processed in the deformed region image. The contour data to be processed is filtered based on the preset maximum gradient and the preset minimum gradient to obtain the contour data of the deformed region image. Based on the contour data of the deformed region image, the neighboring pixels of each pixel are determined, and based on the positional relationship between the pixel and the neighboring pixels, the curvature of each pixel in the corresponding curve direction is determined. A first pixel with similar curvature is obtained, and the first pixel is fitted into an arc curve segment based on a preset fitting algorithm. A second pixel other than the first pixel is obtained, and the second pixel is fitted based on an interpolation fitting algorithm to obtain the remaining curve segment. The arc curve segment and the remaining curve segment are connected to obtain the outline of the deformable area of ​​the gas cylinder to be closed.

8. A gas cylinder closing method based on multi-area monitoring according to claim 7, characterized in that, The image enhancement of the deformed grayscale image based on the preset bioorthogonal wavelet transform specifically includes: The grayscale image of the deformed region is decomposed based on a biorthogonal wavelet transform to obtain a low-frequency decomposed image and a high-frequency decomposed image of the deformed region. The high-frequency decomposition image is enhanced based on a preset weight to obtain an initial high-frequency decomposition enhanced image, and the initial high-frequency decomposition enhanced image is adaptively adjusted based on a preset adaptive adjustment operator to obtain the high-frequency decomposition enhanced image of the deformed region. The grayscale values ​​of each pixel in each preset-size image region in the low-frequency decomposed image are acquired by moving a window of a preset size. The difference between the pixel grayscale values ​​of each pixel and the distance between each pixel are obtained in sequence. The image contrast value of each preset-size image region is determined based on the difference between the pixel grayscale values ​​of each pixel and the distance between each pixel. Based on a preset contrast threshold and the image contrast value of each preset-sized image region, the image regions of each preset size are divided to obtain multiple contrast layers of the low-frequency decomposed image; wherein, the multiple contrast layers correspond to different contrast intensities; Based on the definition of the preset contrast threshold, an adaptive enhancement function for multiple contrast layers of the low-frequency decomposed image is determined, and the multiple contrast layers of the low-frequency decomposed image are enhanced based on the adaptive enhancement function to obtain a low-frequency decomposed enhanced image of the deformed region. Perform inverse wavelet transform on the high-frequency decomposition enhanced image and the low-frequency decomposition enhanced image respectively to obtain the deformed grayscale enhanced image corresponding to the deformed grayscale image.

9. A gas cylinder closing device based on multi-area monitoring, characterized in that, The device includes: At least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-8.

10. A non-volatile storage medium storing computer-executable instructions, characterized in that, The computer-executable instructions are capable of performing the method of any one of claims 1-8.

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