Intelligent production and control method for special aerogel thermal insulation intermediate coating

Abstract

The present invention relates to the technical field of initial temperature control in coating production, and specifically to an intelligent production control method for a special aerogel thermal insulation intermediate coating, comprising: obtaining the ambient temperature signal of the coating during the production process and several infrared images of the coating surface at each initial temperature; obtaining several heating sections and several constant temperature sections of the ambient temperature signal; obtaining the temperature uniformity of each infrared image of the coating surface; obtaining the first synchronization control index of each heating section of each ambient temperature signal according to the change of temperature uniformity and heating section; obtaining the second synchronization control index of each constant temperature section of each ambient temperature signal according to the change of ambient temperature value in the constant temperature section; obtaining the comprehensive synchronization control index of each ambient temperature signal; and regulating the initial temperature of the coating during production according to the comprehensive synchronization control index. The present invention improves the rationality of initial temperature control during coating production.

Description

Technical Field

[0001] The present invention relates to the technical field of initial temperature control in coating production, and in particular to an intelligent production control method for a special aerogel thermal insulation intermediate coating. Background Art

[0002] In the production process of aerogel thermal insulation intermediate coating, the coating needs to undergo a sol-gel process. In this process, continuous heating and stirring are required to control the reaction temperature of the coating at different production stages to ensure that the temperature inside the reactor is within a certain range, forming a gel coating with a structure, so that the produced coating has better thermal insulation effect.

[0003] It is necessary to determine the appropriate initial temperature during the coating production process. Currently, the initial temperature during coating production is only regulated by giving a fixed temperature empirically. Different initial temperatures will lead to different initial structures of the coating. If the initial temperature is not properly controlled, the heat absorbed by the coating in the subsequent sol-gel process will be different, affecting the production effect of the aerogel thermal insulation intermediate coating. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an intelligent production and control method for a special aerogel thermal insulation intermediate coating.

[0005] The intelligent production and control method of a special aerogel thermal insulation intermediate coating of the present invention adopts the following technical scheme:

[0006] An embodiment of the present invention provides an intelligent production control method for a special aerogel thermal insulation intermediate coating, the method comprising the following steps:

[0007] Acquire an ambient temperature signal of the paint during the production process at each initial temperature and several infrared images of the paint surface, wherein the ambient temperature signal includes several ambient temperature values, and each ambient temperature value corresponds to an infrared image of the paint surface; segment the ambient temperature signal to obtain several signal segments of each ambient temperature signal;

[0008] According to the change of the ambient temperature value in the signal segment, several stable signal segments and several non-stable signal segments are obtained; according to the stable signal segment and non-stable signal segment in the ambient temperature signal, several temperature rising segments and several constant temperature segments of each ambient temperature signal are obtained; according to the change of temperature in different super-pixel blocks in the infrared image of the paint surface and the proportion of the super-pixel block with the largest temperature difference in the infrared image of the paint surface, the temperature uniformity of each infrared image of the paint surface is obtained;

[0009] According to the temperature uniformity and the change of the temperature rising section, the first synchronization control index of each temperature rising section of each ambient temperature signal is obtained; according to the change of the ambient temperature value in the constant temperature section, the second synchronization control index of each constant temperature section of each ambient temperature signal is obtained;

[0010] According to the first synchronous control index and the second synchronous control index, a comprehensive synchronous control index of each ambient temperature signal is obtained; and the initial temperature during the production of the coating is regulated by the comprehensive synchronous control index.

[0011] Furthermore, the step of segmenting the ambient temperature signal to obtain a plurality of signal segments of each ambient temperature signal includes the following specific steps:

[0012] For any ambient temperature signal, the ambient temperature signal is segmented by using the APCA algorithm to obtain a plurality of signal segments of the ambient temperature signal.

[0013] Furthermore, the method of obtaining a plurality of stable signal segments and a plurality of non-steady signal segments according to the change of the ambient temperature value in the signal segment includes the following specific steps:

[0014] For any signal segment, obtain the average slope of all data points in the signal segment, obtain the range of all ambient temperature values ​​in the signal segment, merge the average slope and the range to obtain the stability of the signal segment; take the signal segment whose stability is greater than the preset threshold as a stable signal segment, and take the signal segment whose stability is less than or equal to the preset threshold as a non-stationary signal segment.

[0015] Furthermore, the method of obtaining a plurality of temperature rising sections and a plurality of constant temperature sections of each ambient temperature signal based on the stable signal sections and the non-stable signal sections in the ambient temperature signal includes the following specific steps:

[0016] Acquire all stable signal segments of the target ambient temperature signal, where the target ambient temperature signal is any ambient temperature signal, splice adjacent stable signal segments in the target ambient temperature signal in a time sequence to obtain a plurality of constant temperature segments, and splice non-stationary signal segments between adjacent constant temperature segments in a time sequence to obtain a plurality of temperature rise segments.

[0017] Furthermore, the temperature uniformity of each infrared image of the paint surface is obtained according to the temperature changes in different super-pixel blocks in the infrared image of the paint surface and the proportion of the super-pixel blocks with the largest temperature difference in the infrared image of the paint surface, and the specific steps include the following:

[0018] Obtain all superpixel blocks of a first paint surface infrared image after superpixel segmentation, where the first paint surface infrared image is any paint surface infrared image, obtain the average temperature of each superpixel block, obtain the variance of the average temperature of all superpixel blocks in the first paint surface infrared image, obtain the proportion of the number of pixels in two superpixel blocks with the largest average temperature difference in the first paint surface infrared image, fuse the variance of the average temperature, the proportion, and the number of superpixel blocks of the first paint surface infrared image after superpixel segmentation, and obtain the temperature uniformity of the first paint surface infrared image, wherein the variance of the average temperature, the proportion, and the number of superpixel blocks are inversely proportional to the temperature uniformity.

[0019] Furthermore, the specific method for obtaining the average temperature of the superpixel block is: obtaining the temperature value corresponding to each pixel point in the infrared image of the first paint surface, and taking the average value of the temperature values ​​corresponding to all pixels in the superpixel block as the average temperature of the superpixel block.

[0020] Furthermore, the first synchronization control index of each heating section of each ambient temperature signal is obtained according to the temperature uniformity and the change of the heating section, and the specific steps include the following:

[0021] For the target ambient temperature signal The first heating stage In the heating stage The temperature uniformity of the infrared image of the coating surface corresponding to the data point, The absolute value of the difference between the average values ​​of the temperature uniformity of the infrared images of the coating surface corresponding to all data points in the first heating section is recorded as The first difference of the data points The first difference of the data points, The product of the number of superpixel blocks in the infrared image of the paint surface corresponding to the data points is recorded as The first product of the data points The average value of the first product of all data points in the first heating section is recorded as the first average value, and the temperature sequence of the coating surface under the target ambient temperature signal is obtained. The average slope of all data points in the temperature sequence segment corresponding to the first heating segment, The ratio of the average slopes of all data points in the heating section is recorded as the first ratio, the absolute value of the difference between the first ratio and 1 is recorded as the second difference, and the first average value and the second difference are combined to obtain the second The first synchronous control index of the heating section is as follows: the first average value, the second difference and the first synchronous control index are inversely proportional to each other.

[0022] Furthermore, the second synchronization control index of each constant temperature section of each ambient temperature signal is obtained according to the change of the ambient temperature value in the constant temperature section, and the specific steps include the following:

[0023] For the target ambient temperature signal The ambient temperature value within the constant temperature section is The absolute value of the difference between the average value of the ambient temperature in the constant temperature section and the preset temperature value is recorded as the third difference, and the value that does not belong to The number of ambient temperature values ​​is recorded as the first number, The target ambient temperature signal The average value of the ambient temperature in the constant temperature section, is the preset first value, is a preset second value, and an inverse proportional value of the product of the third difference and the first quantity is used as the first The second synchronous control indicator of a constant temperature section.

[0024] Furthermore, the step of obtaining the comprehensive synchronization control index of each ambient temperature signal according to the first synchronization control index and the second synchronization control index includes the following specific steps:

[0025] The accumulated value of the first synchronous control index of all the temperature rising sections and the second synchronous control index of all the constant temperature sections in the target ambient temperature signal is used as the comprehensive synchronous control index of the target ambient temperature signal.

[0026] Furthermore, the initial temperature of the coating during production is regulated by the comprehensive synchronous control index, and the specific steps include the following:

[0027] Obtain the comprehensive synchronous control index of each ambient temperature signal, use the initial temperature corresponding to the maximum comprehensive synchronous control index among the comprehensive synchronous control indexes of all ambient temperature signals as the optimal initial temperature for paint production, and adjust the initial temperature during paint production to the optimal initial temperature.

[0028] The beneficial effect of the technical solution of the present invention is: after obtaining the ambient temperature signal of the paint in the production process and several infrared images of the paint surface at each initial temperature, the present invention obtains several heating sections and several constant temperature sections of each ambient temperature signal through the change of the ambient temperature value, and obtains the temperature uniformity of each paint surface infrared image by analyzing the change of temperature in different superpixel blocks in the infrared image of the paint surface and the proportion of superpixel blocks with the largest temperature difference in the infrared image of the paint surface, and obtains the first synchronization control index of each heating section of each ambient temperature signal through the change of temperature uniformity and the heating section; obtains the second synchronization control index of each constant temperature section of each ambient temperature signal through the change of the ambient temperature value in the constant temperature section; finally, obtains the comprehensive synchronization control index of each ambient temperature signal by combining the first synchronization control index and the second synchronization control index; and controls the initial temperature of the paint during production through the comprehensive synchronization control index, thereby improving the rationality of the initial temperature control during paint production. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A flowchart of the steps of an intelligent production and control method of a special aerogel thermal insulation intermediate coating provided by one embodiment of the present invention;

[0031] Figure 2 A flow chart for regulating the initial temperature during coating production provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the intelligent production and control method of a special aerogel thermal insulation intermediate coating proposed by the present invention, its specific implementation method, structure, characteristics and effects, in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0033] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0034] The specific scheme of the intelligent production control method of a special aerogel thermal insulation intermediate coating provided by the present invention is described in detail below with reference to the accompanying drawings.

[0035] See also Figure 1 and Figure 2 , which shows a flowchart of the steps of an intelligent production control method of a special aerogel thermal insulation intermediate coating provided by an embodiment of the present invention and a flowchart of controlling the initial temperature during coating production, the method comprising the following steps:

[0036] Step S001, obtaining an ambient temperature signal of the paint during the production process and several infrared images of the paint surface at each initial temperature, wherein the ambient temperature signal includes several ambient temperature values, and each ambient temperature value corresponds to an infrared image of the paint surface; segmenting the ambient temperature signal to obtain several signal segments of each ambient temperature signal.

[0037] It should be noted that the main purpose of this embodiment is to regulate the initial temperature during coating production by combining different initial temperatures with the influence of temperature changes of aerogel thermal insulation intermediate coating at different stages of the heating process on coating production.

[0038] It should be noted that when the paint is produced, an initial heating temperature is given so that the paint can melt, and then the paint is processed by heating and stirring. The given initial temperature can ensure full dissolution without destroying the material properties of the paint. By analyzing the temperature changes of the paint at different initial temperatures and the changes in the ambient temperature, the initial temperature of the paint during production is regulated. Before starting the analysis, collect relevant data first.

[0039] Specifically, the ambient temperature signal of the paint during the production process and several infrared images of the paint surface are obtained at each initial temperature, wherein the ambient temperature signal includes several ambient temperature values, and each ambient temperature value corresponds to an infrared image of the paint surface, as follows:

[0040] Preset several initial temperatures. It should be noted that the value range of the preset several initial temperatures in this embodiment is , obtain the ambient temperature signal of the paint during the production process at each initial temperature, and obtain several infrared images of the paint surface during the production process at each initial temperature.

[0041] It should be noted that the ambient temperature signal contains several data points, each data point corresponds to an ambient temperature value, the ambient temperature value is obtained by a temperature sensor, and the infrared image of the paint surface is obtained by an infrared camera. The specific acquisition is an existing method, which will not be repeated in this embodiment. There is one ambient temperature value in the ambient temperature signal every minute, and one infrared image of the paint surface is taken every minute, that is, the number of ambient temperature values ​​in the ambient temperature signal and the number of infrared images of the paint surface are the same, and each ambient temperature value corresponds to an infrared image of the paint surface, and the infrared images of the paint surface are all grayscale images.

[0042] It should be noted that, in order to facilitate better subsequent analysis, each ambient temperature signal needs to be processed in segments.

[0043] Furthermore, the ambient temperature signal is segmented to obtain several signal segments of each ambient temperature signal, as follows:

[0044] For any ambient temperature signal, the ambient temperature signal is segmented by the APCA algorithm (Adaptive Principal Component Analysis) to obtain several signal segments of the ambient temperature signal. It should be noted that segmenting the signal by the APCA algorithm to obtain several signal segments is an existing method of the APCA algorithm, which will not be repeated in this embodiment.

[0045] So far, the ambient temperature signal of the paint during the production process at each initial temperature and several infrared images of the paint surface are obtained, as well as several signal segments of each ambient temperature signal.

[0046] Step S002, according to the change of the ambient temperature value in the signal segment, obtain a number of stable signal segments and a number of non-stationary signal segments; according to the stable signal segments and the non-stationary signal segments in the ambient temperature signal, obtain a number of heating segments and a number of constant temperature segments of each ambient temperature signal; according to the change of temperature in different super-pixel blocks in the infrared image of the paint surface and the proportion of the super-pixel blocks with the largest temperature difference in the infrared image of the paint surface, obtain the temperature uniformity of each infrared image of the paint surface.

[0047] It should be noted that in order to better ensure that the coating undergoes chemical reactions under optimal conditions during the sol-gel process and avoid temperature failure caused by one-time heating, it is necessary to heat in stages so as to accurately control the temperature at each stage. After the temperature reaches a certain temperature range after heating, the solvent will evaporate in the current stage to control the viscosity and concentration of the coating. Therefore, in the entire production process, the overall performance of the ambient temperature signal is a number of processes such as rising, stabilizing, rising, and stabilizing until the sol-gel process ends. Since the acquired ambient temperature signal has certain noise and is not completely ideal, the above-mentioned segmentation of the ambient temperature signal may be a small segment of a certain process and cannot fully reflect a processing process, that is, a rising process or a stabilizing process. Therefore, it is necessary to analyze the stability index of each signal segment to obtain several processing processes.

[0048] Preferably, according to the change of the ambient temperature value in the signal segment, a number of stable signal segments and a number of non-steady signal segments are obtained, as follows:

[0049] For any signal segment, obtain the average slope of all data points in the signal segment, obtain the range of all ambient temperature values ​​in the signal segment, merge the average slope and the range to obtain the stability of the signal segment; take the signal segment whose stability is greater than the preset threshold as a stable signal segment, and take the signal segment whose stability is less than or equal to the preset threshold as a non-stationary signal segment.

[0050] As a specific example, the specific method for obtaining the stable signal segment is as follows:

[0051] Any ambient temperature signal is recorded as a target ambient temperature signal, and any signal segment of the target ambient temperature signal is recorded as a target signal segment.

[0052]

[0053] In the formula, is the average slope of all data points in the target signal segment, is the range of all ambient temperature values ​​in the target signal segment, is an exponential function with a natural constant as the base. The model is used to present the inverse proportional relationship and normalization processing. As the input of the model, the implementer can set the inverse proportional function and normalization function according to the actual situation; is the stability of the target signal segment.

[0054] It should be noted that The smaller it is, the more stable the change in the target signal segment is, corresponding to The bigger, The smaller the value, the smaller the overall change range of the target signal segment. The bigger.

[0055] A first threshold is preset. This embodiment is described with the first threshold being 0.8. If the stability of the target signal segment is greater than the first threshold, the target signal segment is regarded as a stationary signal segment. If the stability of the target signal segment is greater than the first threshold, the target signal segment is regarded as a stationary signal segment. If the stability of the target signal segment is less than or equal to the first threshold, the target signal segment is regarded as a non-stationary signal segment.

[0056] Furthermore, according to the stable signal segment and the non-stable signal segment in the ambient temperature signal, several temperature rising segments and several constant temperature segments of each ambient temperature signal are obtained, as follows:

[0057] All stable signal segments of the target ambient temperature signal are obtained, adjacent stable signal segments in the target ambient temperature signal are spliced ​​in time sequence to obtain a number of constant temperature segments, and non-stationary signal segments between adjacent constant temperature segments are spliced ​​in time sequence to obtain a number of temperature rise segments.

[0058] It should be noted that since the ambient temperature signal can be divided into different stages, and the ambient temperature in one stage undergoes two different changes, heating and stabilization, which correspond to the heating section and the constant temperature section respectively, in order to better control the initial temperature during the production of the coating, the ambient temperature rise and the stable ambient temperature in the same stage can be discussed separately; first determine the synchronous control indicators of the ambient temperature rise stage. During the ambient temperature rise process, the temperature rise period is usually accompanied by the preheating stage before the solvent begins to evaporate. During this stage, the ambient temperature will maintain a uniform rise, and the surface temperature of the coating will gradually rise. Ideally, the surface temperature should rise synchronously and the surface temperature should be uniform overall. If the temperature is unevenly heated, it will cause uneven void structure during the formation of the coating. Therefore, it is necessary to consider the distribution of the surface temperature of the coating, and then determine the temperature uniformity of the infrared image of the coating surface.

[0059] Preferably, the temperature uniformity of each infrared image of the paint surface is obtained according to the temperature changes in different superpixel blocks in the infrared image of the paint surface and the proportion of the superpixel blocks with the largest temperature difference in the infrared image of the paint surface, as follows:

[0060] All superpixel blocks of a first paint surface infrared image after superpixel segmentation are obtained, the first paint surface infrared image is any paint surface infrared image, and the average temperature of each superpixel block is obtained. The specific method for obtaining the average temperature of the superpixel block is as follows: obtain the temperature value corresponding to each pixel point in the first paint surface infrared image, take the average value of the temperature values ​​corresponding to all pixels in the superpixel block as the average temperature of the superpixel block, obtain the variance of the average temperature of all superpixel blocks in the first paint surface infrared image, obtain the proportion of the number of pixels in two superpixel blocks with the largest average temperature difference in the first paint surface infrared image, fuse the variance of the average temperature, the proportion, and the number of superpixel blocks after the first paint surface infrared image is segmented by superpixel, and obtain the temperature uniformity of the first paint surface infrared image, the variance of the average temperature, the proportion, and the number of superpixel blocks are inversely proportional to the temperature uniformity.

[0061] As a specific example, the specific method for obtaining the temperature uniformity is as follows:

[0062] Any infrared image of the paint surface is recorded as the first infrared image of the paint surface, and the first infrared image of the paint surface is segmented into superpixels to obtain several superpixel blocks of the first infrared image of the paint surface. It should be noted that the infrared image of the paint surface can reflect the temperature of the paint surface, and the superpixel blocks obtained by superpixel segmentation can reflect the situation of similar local temperature.

[0063]

[0064] In the formula, is the variance of the average temperature of all superpixel blocks in the infrared image of the first paint surface. The specific method for obtaining the variance of the average temperature of all superpixel blocks in the infrared image of the first paint surface is as follows: obtain the temperature value corresponding to each pixel point in the infrared image of the first paint surface. It should be noted that obtaining the temperature value corresponding to each pixel point in the infrared image is an existing method; any superpixel block in the infrared image of the first paint surface is recorded as the target superpixel block, the average value of the temperature values ​​corresponding to all pixels in the target superpixel block is recorded as the average temperature of the target superpixel block, and the variance of the average temperature of all superpixel blocks in the infrared image of the first paint surface is recorded as ; is the number of superpixel blocks in the infrared image of the first paint surface, The specific method for obtaining is as follows: the sum of the number of pixels in the superpixel block corresponding to the maximum average temperature of all superpixel blocks in the infrared image of the first coating surface and the number of pixels in the superpixel block corresponding to the minimum average temperature is recorded as ; is the number of pixels in the infrared image of the first coating surface, is the temperature uniformity of the infrared image of the first coating surface, is an exponential function with a natural constant as base.

[0065] It should be noted that The smaller it is, the more uniform the temperature distribution on the coating surface is. The bigger, The smaller it is, the closer the surface temperature of the paint is. The bigger, The smaller it is, the smaller the proportion of pixels in the superpixel block with large temperature differences is. The bigger.

[0066] At this point, the temperature uniformity of each paint surface infrared image is obtained.

[0067] Step S003, according to the temperature uniformity and the change of the heating section, obtain the first synchronization control index of each heating section of each ambient temperature signal; according to the change of the ambient temperature value in the constant temperature section, obtain the second synchronization control index of each constant temperature section of each ambient temperature signal.

[0068] It should be noted that after determining the distribution of the surface temperature of the coating, as the ambient temperature rises, the coating absorbs the ambient temperature and is heated. If the coating can effectively absorb the current heat, the coating temperature will rise approximately synchronously with the ambient temperature. Therefore, the first synchronous control index of the heating section is determined by analyzing the synchronous control of the heating section and the coating surface temperature obtained by combining the temperature uniformity.

[0069] Preferably, according to the temperature uniformity and the change of the temperature rising section, the first synchronization control index of each temperature rising section of each ambient temperature signal is obtained, which is specifically as follows:

[0070] For the target ambient temperature signal The first heating stage In the heating stage The temperature uniformity of the infrared image of the coating surface corresponding to the data point, The absolute value of the difference between the average values ​​of the temperature uniformity of the infrared images of the coating surface corresponding to all data points in the first heating section is recorded as The first difference of the data points The first difference of the data points, The product of the number of superpixel blocks in the infrared image of the paint surface corresponding to the data points is recorded as The first product of the data points The average value of the first product of all data points in the first heating section is recorded as the first average value, and the temperature sequence of the coating surface under the target ambient temperature signal is obtained. The average slope of all data points in the temperature sequence segment corresponding to the first heating segment, The ratio of the average slopes of all data points in the heating section is recorded as the first ratio, the absolute value of the difference between the first ratio and 1 is recorded as the second difference, and the first average value and the second difference are combined to obtain the second The first synchronous control index of the heating section is as follows: the first average value, the second difference and the first synchronous control index are inversely proportional to each other.

[0071] As a specific example, the specific method for obtaining the first synchronous control index of the heating stage is as follows:

[0072]

[0073] In the formula, The target ambient temperature signal The number of data points in a heating stage, For the In the heating stage The temperature uniformity of the infrared image of the coating surface corresponding to the data point, For the The average value of the temperature uniformity of the infrared image of the coating surface corresponding to all data points in the heating section, To take the absolute value, For the In the heating stage The number of superpixel blocks in the infrared image of the paint surface corresponding to the data point, is the average slope of all data points in the paint surface temperature sequence under the target ambient temperature signal. The specific method for obtaining the average slope of all data points in the paint surface temperature sequence under the target ambient temperature signal is as follows: obtain all paint surface infrared images corresponding to the target ambient temperature signal, and take the average value of the temperature values ​​corresponding to all pixel points in each paint surface infrared image as the average temperature of the paint surface infrared image. For all paint surface infrared images corresponding to the target ambient temperature signal, take the average temperature value of each paint surface infrared image as the ordinate, and take the order value of each paint surface infrared image as the abscissa to construct a sequence, which is recorded as the paint surface temperature sequence under the target ambient temperature signal. The average slope of all data points in the corresponding sequence segment in the coating surface temperature sequence under the target ambient temperature signal for a heating segment is recorded as ; The target ambient temperature signal The average slope of all data points in a heating period, is an exponential function with a natural constant as the base. Model to present inverse proportional relationship and normalization, As the input of the model, the implementer can set the inverse proportional function and normalization function according to the actual situation; The target ambient temperature signal The first synchronous control indicator of a heating stage.

[0074] It should be noted that The larger the value, the uneven the overall temperature distribution of the coating surface when it is heated up, and the temperature changes of each part are also different as the ambient temperature changes, which will lead to uneven reaction inside the coating. The smaller; The smaller it is, the more the temperature of the coating surface rises when the ambient temperature rises, and the heat absorption is relatively stable. The larger the first synchronization control index is, the better the synchronization control is.

[0075] It should be noted that the above analysis analyzes the changes in synchronous control in the temperature rise section, and then determines the changes in the constant temperature section. After the ambient temperature reaches the expected range, it enters the temperature stabilization period. In this stage, the ambient temperature is as stable as possible to ensure the control and quality of the coating reaction process. There may be slight temperature fluctuations during the temperature stabilization period, which may be caused by the adjustment of the heating system or external environmental factors. These fluctuations should be within an acceptable range so as not to adversely affect the quality of the coating.

[0076] Specifically, according to the change of the ambient temperature value in the constant temperature section, the second synchronization control index of each constant temperature section of each ambient temperature signal is obtained, which is as follows:

[0077] For the target ambient temperature signal The ambient temperature value within the constant temperature section is The absolute value of the difference between the average value of the ambient temperature in the constant temperature section and the preset temperature value is recorded as the third difference, and the value that does not belong to The number of ambient temperature values ​​is recorded as the first number, The target ambient temperature signal The average value of the ambient temperature in the constant temperature section, is the preset first value, is a preset second value, and an inverse proportional value of the product of the third difference and the first quantity is used as the first The second synchronous control indicator of a constant temperature section.

[0078] As a specific example, the specific method for obtaining the second synchronous control index of the constant temperature section is as follows:

[0079]

[0080] In the formula, The target ambient temperature signal The average value of the ambient temperature in the constant temperature section, For the The expected ambient temperature value of each constant temperature section is a preset temperature value, which is not fixed in this embodiment. To take the absolute value, The specific method of obtaining is as follows: The ambient temperature value within a constant temperature section will not belong to The number of ambient temperature values ​​is denoted by ; is the preset first value, is the preset second value. , to give a narrative; The target ambient temperature signal The second synchronous control index of the constant temperature section, is an exponential function with a natural constant as its base.

[0081] It should be noted that The larger the The greater the deviation of the average value of the ambient temperature in a constant temperature section from the appropriate temperature, The smaller; The larger the deviation The greater the number of ambient temperature values, The smaller it is; the larger the second synchronization control index is, the better the synchronization control is.

[0082] At this point, the second synchronization control index of each constant temperature section of each ambient temperature signal is obtained.

[0083] Step S004: Obtain a comprehensive synchronous control index for each ambient temperature signal according to the first synchronous control index and the second synchronous control index; and adjust the initial temperature of the coating during production by means of the comprehensive synchronous control index.

[0084] It should be noted that the above determines the temperature rise state and stable state of the ambient temperature in each stage. Since the reaction conditions in each stage will affect the final coating, it is necessary to further analyze the overall temperature change through the ambient temperature conditions in each stage. During the heating stages of the coating, in each reaction stage, the more stable the ambient temperature, the better the control of the reaction rate and reaction selectivity can be, which can ensure the stability of the coating quality.

[0085] Specifically, according to the first synchronous control index and the second synchronous control index, a comprehensive synchronous control index of each ambient temperature signal is obtained; the initial temperature of the coating during production is regulated by the comprehensive synchronous control index, as follows:

[0086] The accumulated value of the first synchronous control index of all heating sections and the second synchronous control index of all constant temperature sections in the target ambient temperature signal is used as the comprehensive synchronous control index of the target ambient temperature signal; the comprehensive synchronous control index of each ambient temperature signal is obtained, and the initial temperature corresponding to the maximum comprehensive synchronous control index among the comprehensive synchronous control indicators of all ambient temperature signals is used as the optimal initial temperature for paint production, and the initial temperature during paint production is adjusted to the optimal initial temperature.

[0087] It should be noted that after the initial temperature during the production of the coating is adjusted to the optimal initial temperature, the production of the coating is subsequently completed according to the adjusted temperature.

[0088] Through the above steps, an intelligent production and control method for a special aerogel thermal insulation intermediate coating is completed.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent production and control method for a special aerogel thermal insulation intermediate coating, characterized in that: The method comprises the following steps: Acquire an ambient temperature signal of the paint during the production process at each initial temperature and several infrared images of the paint surface, wherein the ambient temperature signal includes several ambient temperature values, and each ambient temperature value corresponds to an infrared image of the paint surface; segment the ambient temperature signal to obtain several signal segments of each ambient temperature signal; According to the change of the ambient temperature value in the signal segment, several stable signal segments and several non-stable signal segments are obtained; according to the stable signal segment and non-stable signal segment in the ambient temperature signal, several temperature rising segments and several constant temperature segments of each ambient temperature signal are obtained; according to the change of temperature in different super-pixel blocks in the infrared image of the paint surface and the proportion of the super-pixel block with the largest temperature difference in the infrared image of the paint surface, the temperature uniformity of each infrared image of the paint surface is obtained; According to the temperature uniformity and the change of the temperature rising section, the first synchronization control index of each temperature rising section of each ambient temperature signal is obtained; according to the change of the ambient temperature value in the constant temperature section, the second synchronization control index of each constant temperature section of each ambient temperature signal is obtained; According to the first synchronous control index and the second synchronous control index, a comprehensive synchronous control index of each ambient temperature signal is obtained; and the initial temperature during the coating production is regulated by the comprehensive synchronous control index; The method of obtaining the first synchronization control index of each heating section of each ambient temperature signal according to the temperature uniformity and the change of the heating section includes the following specific steps: For the target ambient temperature signal The first heating stage In the heating stage The temperature uniformity of the infrared image of the coating surface corresponding to the data point, The absolute value of the difference between the average values ​​of the temperature uniformity of the infrared images of the coating surface corresponding to all data points in the first heating section is recorded as The first difference of the data points The first difference of the data points, The product of the number of superpixel blocks in the infrared image of the paint surface corresponding to the data points is recorded as The first product of the data points The average value of the first product of all data points in the first heating section is recorded as the first average value, and the temperature sequence of the coating surface under the target ambient temperature signal is obtained. The average slope of all data points in the temperature sequence segment corresponding to the first heating segment, The ratio of the average slopes of all data points in the heating section is recorded as the first ratio, the absolute value of the difference between the first ratio and 1 is recorded as the second difference, and the first average value and the second difference are combined to obtain the second a first synchronous control index of a heating section, wherein the first average value, the second difference and the first synchronous control index are inversely proportional to each other; The method of obtaining the second synchronization control index of each constant temperature segment of each ambient temperature signal according to the change of the ambient temperature value in the constant temperature segment includes the following specific steps: For the target ambient temperature signal The ambient temperature value within the constant temperature section is The absolute value of the difference between the average value of the ambient temperature in the constant temperature section and the preset temperature value is recorded as the third difference, and the value that does not belong to The number of ambient temperature values ​​is recorded as the first number, The target ambient temperature signal The average value of the ambient temperature in the constant temperature section, is the preset first value, is a preset second value, and an inverse proportional value of the product of the third difference and the first quantity is used as the first The second synchronous control indicator of a constant temperature section.

2. According to the intelligent production and control method of a special aerogel thermal insulation intermediate coating according to claim 1, it is characterized in that: The step of segmenting the ambient temperature signal to obtain a plurality of signal segments of each ambient temperature signal includes the following specific steps: For any ambient temperature signal, the ambient temperature signal is segmented by using the APCA algorithm to obtain a plurality of signal segments of the ambient temperature signal.

3. According to the intelligent production and control method of a special aerogel thermal insulation intermediate coating according to claim 1, it is characterized in that: The method of obtaining a plurality of stable signal segments and a plurality of non-stable signal segments according to the change of the ambient temperature value in the signal segment includes the following specific steps: For any signal segment, the average slope of all data points in the signal segment is obtained, the range of all ambient temperature values ​​in the signal segment is obtained, and the average slope and the range are merged to obtain the stability of the signal segment; A signal segment whose stability is greater than a preset threshold is regarded as a stable signal segment, and a signal segment whose stability is less than or equal to the preset threshold is regarded as a non-stationary signal segment.

4. According to the intelligent production and control method of a special aerogel thermal insulation intermediate coating according to claim 1, it is characterized in that: The method of obtaining a plurality of temperature rising sections and a plurality of constant temperature sections of each ambient temperature signal according to the stable signal sections and the non-stable signal sections in the ambient temperature signal comprises the following specific steps: Acquire all stable signal segments of the target ambient temperature signal, where the target ambient temperature signal is any ambient temperature signal, splice adjacent stable signal segments in the target ambient temperature signal in a time sequence to obtain a plurality of constant temperature segments, and splice non-stationary signal segments between adjacent constant temperature segments in a time sequence to obtain a plurality of temperature rise segments.

5. According to the intelligent production and control method of a special aerogel thermal insulation intermediate coating according to claim 1, it is characterized in that: The temperature uniformity of each infrared image of the paint surface is obtained according to the temperature changes in different super-pixel blocks in the infrared image of the paint surface and the proportion of the super-pixel blocks with the largest temperature difference in the infrared image of the paint surface, and the specific steps include the following: Obtain all superpixel blocks of a first paint surface infrared image after superpixel segmentation, where the first paint surface infrared image is any paint surface infrared image, obtain the average temperature of each superpixel block, obtain the variance of the average temperature of all superpixel blocks in the first paint surface infrared image, obtain the proportion of the number of pixels in two superpixel blocks with the largest average temperature difference in the first paint surface infrared image, fuse the variance of the average temperature, the proportion, and the number of superpixel blocks of the first paint surface infrared image after superpixel segmentation, and obtain the temperature uniformity of the first paint surface infrared image, wherein the variance of the average temperature, the proportion, and the number of superpixel blocks are inversely proportional to the temperature uniformity.

6. According to the intelligent production and control method of a special aerogel thermal insulation intermediate coating according to claim 5, it is characterized in that: The specific method for obtaining the average temperature of the superpixel block is: obtaining the temperature value corresponding to each pixel point in the infrared image of the first paint surface, and taking the average value of the temperature values ​​corresponding to all pixels in the superpixel block as the average temperature of the superpixel block.

7. The intelligent production and control method of a special aerogel thermal insulation intermediate coating according to claim 4 is characterized in that: The step of obtaining the comprehensive synchronization control index of each ambient temperature signal according to the first synchronization control index and the second synchronization control index includes the following specific steps: The accumulated value of the first synchronous control index of all the temperature rising sections and the second synchronous control index of all the constant temperature sections in the target ambient temperature signal is used as the comprehensive synchronous control index of the target ambient temperature signal.

8. The intelligent production and control method of a special aerogel thermal insulation intermediate coating according to claim 1 is characterized in that: The initial temperature of the coating during production is regulated by the comprehensive synchronous control index, and the specific steps include the following: Obtain the comprehensive synchronous control index of each ambient temperature signal, use the initial temperature corresponding to the maximum comprehensive synchronous control index among the comprehensive synchronous control indexes of all ambient temperature signals as the optimal initial temperature for paint production, and adjust the initial temperature during paint production to the optimal initial temperature.

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