Concrete performance improvement method and system based on temperature rise character monitoring analysis

Abstract

The invention relates to the technical field of concrete performance testing, and discloses a concrete performance improvement method based on temperature rise character monitoring and analysis, which comprises the following steps: receiving a concrete performance testing instruction, starting a performance detection device, taking an equilateral cylindrical concrete sample in a solidified state, performing pre-test cleaning treatment on the concrete sample, and then performing temperature rise character monitoring and analysis on the concrete sample. After processing, uniformly spraying speckle paint on a middle scale distance section of the concrete sample, fixing the middle scale distance section, adjusting high-speed camera equipment, shooting the speckle section of the sample to obtain an original speckle image set, then carrying out step-by-step loading and stretching on the concrete sample until the concrete sample is fractured, and meanwhile, collecting a deformed speckle image set before and after the fracture; and recording temperature change data in the process before and after fracture, combining with the analysis to obtain a performance test result of the concrete sample, formulating targeted performance improvement measures, and completing concrete performance improvement based on temperature rise character monitoring and analysis. According to the invention, the accuracy of concrete performance testing can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete performance testing, and in particular to a method, system, electronic device and computer-readable storage medium for improving concrete performance based on temperature rise trait monitoring and analysis. Background Art

[0002] Concrete is one of the most important components of building structures, and its performance directly affects the safety, durability and service life of buildings. It is particularly important to test the performance of concrete by testing the performance of concrete to obtain corresponding results, optimize the concrete mix ratio and construction process according to the test results, and improve the overall performance of concrete in a targeted manner.

[0003] At present, the traditional method of testing concrete performance is to determine the tensile strength of concrete through a tensile test, that is, using a tensile testing machine to directly read the maximum tensile strength of the test sample when it breaks. The operation is simple and fast, but sometimes the concrete sample breaks relatively quickly, and the time of the fracture is often not accurate enough. Therefore, how to accurately capture the moment when the concrete sample actually breaks, so as to accurately analyze the actual performance of the concrete sample, is a technical problem that needs to be solved urgently. Summary of the invention

[0004] The present invention provides a concrete performance improvement method, system and computer-readable storage medium based on temperature rise property monitoring and analysis, the main purpose of which is to improve the accuracy of concrete performance testing.

[0005] To achieve the above-mentioned purpose, the present invention provides a method for improving concrete performance based on temperature rise behavior monitoring and analysis, comprising:

[0006] receiving a concrete performance test instruction, and starting a concrete performance test device according to the concrete performance test instruction, wherein the performance test device is composed of a tensile test unit, an image acquisition unit, a temperature sensor unit, and a data feedback unit;

[0007] Take an equilateral cylindrical concrete sample in a solidified state, wherein the height of the equilateral cylinder is 100 mm to 150 mm, perform a pre-test cleaning process on the concrete sample, and after the cleaning operation is completed, spray a speckle paint evenly on the middle gauge length section of the concrete sample, and fix it to the tensile test unit;

[0008] Adjusting the high-speed camera device of the image acquisition unit to be flush with the concrete sample, and after the adjustment operation is completed, using the high-speed camera device to shoot the speckle segment of the concrete sample to obtain an original speckle image set, and using the image acquisition unit to compress and transmit the original speckle image set to the data feedback unit;

[0009] Starting the temperature sensing unit, using the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, while using the high-speed camera device to collect a set of deformation speckle images of the concrete sample before and after the break, and using the temperature sensing unit to record temperature change data of the concrete sample before and after the break;

[0010] The deformed speckle image set is compressed and sent to a data feedback unit. When the data feedback unit receives the compressed deformed speckle image set, the compressed original speckle image set and the deformed speckle image set are substituted into a pre-built image analysis model, the temperature change data is substituted into a pre-built heat conduction model, and the performance test result of the concrete sample is obtained by combined analysis;

[0011] According to the performance test results, formulate targeted measures to improve concrete performance, and complete the concrete performance improvement based on temperature rise behavior monitoring and analysis.

[0012] Optionally, the concrete sample is cleaned before the test, and after the cleaning operation is completed, a middle gauge section of the concrete sample is evenly sprayed with speckle paint, and the concrete sample is fixed to the tensile test unit, including:

[0013] Immersing the concrete sample in a non-acidic detergent solution, wherein the volume ratio of the non-acidic detergent to water in the non-acidic detergent solution is in the range of 1:15 to 1:20;

[0014] After soaking for 5 to 10 minutes, wipe the surface of the concrete sample with a sponge dipped in a non-acidic detergent solution. After the wiping operation is completed, wipe the concrete sample dry with a sterile cloth;

[0015] Slowly introduce the acetone solution into the cleaning tank of the ultrasonic cleaning equipment, and then immerse the concrete sample in the acetone solution in the cleaning tank to ensure that the concrete sample is completely covered in the acetone solution;

[0016] Turn on the ultrasonic cleaning equipment, perform ultrasonic cleaning on the concrete sample for 10 minutes, and complete the cleaning process of the concrete sample;

[0017] Use a sprayer to evenly spray the speckle paint on the middle gauge length section of the concrete sample, and dry it after spraying;

[0018] The concrete sample is placed on the tensile test unit, and the two ends of the concrete sample are automatically identified and grasped by the tensile test unit to complete the fixation of the concrete sample.

[0019] Optionally, placing the concrete sample on the tensile test unit and using the tensile test unit to automatically identify and grasp both ends of the concrete sample to complete the fixing of the concrete sample includes:

[0020] Determine the tensile test unit, wherein the tensile test unit includes an intelligent gripper, a fixture and a vertical adjuster, the fixture is a pair of circular grooves capable of automatically adjusting the diameter, and is respectively located at the upper and lower sides of the tensile test unit;

[0021] After placing the concrete sample in the tensile test unit, the intelligent gripper is activated, and the concrete sample is gripped and placed vertically between the clamp fixtures;

[0022] When the concrete sample is identified, the position of the fixture is retracted, and the circular grooves on the upper and lower sides begin to move toward each other until they are connected to the two ends of the concrete sample respectively;

[0023] Using the clamp fixture, adjust the diameter of the circular groove until it just wraps around both ends of the concrete sample;

[0024] The vertical adjuster is used to measure the angle between the concrete sample and the table top. If the angle is not 90°, the left and right positions of the clamp fixture are continuously adjusted until the concrete sample is perpendicular to the table top.

[0025] It can be understood that the tensile test unit has the function of fixing the concrete sample, and while fixing the concrete sample, the concrete sample can be made perpendicular to the tabletop, thereby ensuring that the image acquisition unit takes the image at a level angle.

[0026] Optionally, the using the high-speed camera device to shoot the speckle segment of the concrete sample to obtain an original speckle image set, and using the image acquisition unit to compress and transmit the original speckle image set to the data feedback unit includes:

[0027] Determining the image acquisition unit, wherein the image acquisition unit includes a high-speed camera device, a storage buffer area and an image compression model;

[0028] Starting the high-speed camera device, setting the camera shooting parameters of the high-speed camera device, and shooting the speckle segment of the concrete sample after completing the setting to obtain an original speckle image set;

[0029] Initializing the memory of the storage buffer area, creating a thread connecting the high-speed camera device and the storage buffer area, and sending the original speckle image set to the storage buffer area through the thread;

[0030] Reading the original speckle image set in the storage buffer area, and determining the compressibility of the original speckle image set by using the image compression model, wherein the compressibility indicates a suitable compression degree under the premise of ensuring image quality;

[0031] Based on the compressibility, image compression is performed on the original speckle image set, and the compressed original speckle image set is transmitted to a data feedback unit.

[0032] Optionally, the using the image compression model to determine the compressibility of the original speckle image set includes:

[0033] Counting the occurrence frequency of each gray value in the original speckle image set, and identifying the number of pixels in the original speckle image set;

[0034] Calculate the pixel ratio occupied by each gray value in the image according to the occurrence frequency and the number of pixels;

[0035] The information entropy value of the original speckle image set is calculated by using the pixel ratio, and the compressibility of the original speckle image set is determined based on the information entropy value.

[0036] Optionally, calculating the pixel ratio occupied by each gray value in the image according to the occurrence frequency and the number of pixels includes:

[0037]

[0038] Among them, P i Indicates the pixel ratio occupied by the i-th gray value, Gray i represents the frequency of occurrence of the i-th gray value, and K represents the number of pixels.

[0039] Optionally, the calculating the information entropy value of the original speckle image set by using the pixel ratio includes:

[0040]

[0041] Among them, H represents the information entropy value, P i Indicates the ratio of pixels occupied by the i-th gray value.

[0042] Optionally, the step of performing step-by-step loading and stretching on the concrete sample by using the tensile test unit until the concrete sample breaks comprises:

[0043] Setting initial test parameters of the tensile test unit, wherein the initial test parameters include test environment temperature, test tensile speed, real-time applied load and maximum allowable load;

[0044] Using the tensile test unit to stretch the concrete sample, and increasing the load by 5% of the maximum allowable load at each level until the real-time applied load reaches 60% of the maximum allowable load, and continuing to maintain the load state for 30 seconds, while checking the state of the tensile test unit and the concrete sample;

[0045] If no abnormality is found, continue to stretch the concrete sample at a load level of 5% of the maximum allowable load at each level until the real-time applied load fully reaches the maximum allowable load, and continue to maintain this load state for 30 seconds while checking the state of the tensile test unit and the concrete sample;

[0046] If no abnormality is found, continue to load and stretch at a load of 2% of the maximum allowable load until the concrete sample breaks.

[0047] Optionally, the step of substituting the compressed original speckle image set and the deformed speckle image set into a pre-built image analysis model, substituting the temperature change data into a pre-built heat conduction model, and combining the analysis to obtain the performance test result of the concrete sample includes:

[0048] Based on the SIFT algorithm, the speckle feature point set before and after deformation is extracted from the compressed original speckle image set and the deformed speckle image set, wherein the speckle feature point set consists of n pairs of speckle feature points before and after deformation;

[0049] By comparing the position changes of the speckle feature point set before and after the deformation, the displacement vector of each pair of the speckle feature points before and after the deformation is calculated;

[0050] Based on the displacement vector, further calculating the deformation statistics of the sample, wherein the deformation statistics include the maximum value, minimum value, average value and standard deviation of the displacement vector, and comprehensively evaluating the overall deformation degree of the concrete sample according to the deformation statistics;

[0051] According to the overall deformation degree, the relevant mechanical parameters of the stress-strain relationship of the concrete sample under different load levels are analyzed, and the temperature change data is substituted into a pre-built heat conduction model to analyze and obtain the internal temperature state of the concrete sample;

[0052] Combining the relevant mechanical parameters and the internal temperature state, a stress-strain curve of the concrete sample is drawn. After the drawing operation is completed, the fracture point of the concrete sample is found from the stress-strain curve, and the stress corresponding to the fracture point is the performance test result of the concrete sample.

[0053] In order to solve the above problems, the present invention also provides a concrete performance improvement system based on temperature rise property monitoring and analysis, the system comprising:

[0054] A test instruction receiving module, used for receiving a concrete performance test instruction, and starting a concrete performance detection device according to the concrete performance test instruction, wherein the performance detection device is composed of a tensile test unit, an image acquisition unit, a temperature sensing unit and a data feedback unit;

[0055] A concrete sample fixing module is used to take an equilateral cylindrical concrete sample in a solidified state, wherein the height of the equilateral cylinder is 100 mm to 150 mm, and perform a pre-test cleaning process on the concrete sample. After the cleaning operation is completed, the middle gauge section of the concrete sample is evenly sprayed with speckle paint, and then fixed to the tensile test unit;

[0056] an original image shooting module, used for adjusting the high-speed camera device of the image acquisition unit to be flush with the concrete sample, and after the adjustment operation is completed, using the high-speed camera device to shoot the speckle segment of the concrete sample to obtain an original speckle image set, and using the image acquisition unit to compress and transmit the original speckle image set to the data feedback unit;

[0057] a step-by-step tensile test module, for starting the temperature sensing unit, and using the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, and at the same time using the high-speed camera device to collect a set of deformation speckle images of the concrete sample before and after the break, and using the temperature sensing unit to record the temperature change data of the concrete sample before and after the break;

[0058] a data feedback analysis module, configured to compress the deformed speckle image set and send it to a data feedback unit; when the data feedback unit receives the compressed deformed speckle image set, the compressed original speckle image set and the deformed speckle image set are substituted into a pre-built image analysis model, the temperature change data are substituted into a pre-built heat conduction model, and the performance test results of the concrete samples are obtained through combined analysis; and according to the performance test results, targeted concrete performance improvement measures are formulated to complete the concrete performance improvement based on the temperature rise property monitoring and analysis.

[0059] In order to solve the above problem, the present invention further provides an electronic device, the electronic device comprising:

[0060] at least one processor; and,

[0061] a memory communicatively connected to the at least one processor; wherein,

[0062] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to implement the above-mentioned method for improving concrete performance based on temperature rise property monitoring and analysis.

[0063] In order to solve the above problems, the present invention also provides a computer-readable storage medium, in which at least one instruction is stored. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned method for improving concrete performance based on temperature rise trait monitoring and analysis.

[0064] Compared with the phenomenon described in the background technology, the embodiment of the present invention first receives a concrete performance test instruction, starts a concrete performance detection device according to the concrete performance test instruction, and after cleaning the equilateral cylindrical concrete sample in the solidified state, sprays the speckle paint evenly on the middle gauge length section of the concrete sample and fixes it to the tensile test unit. It should be emphasized that the speckle pattern after spraying can significantly increase the contrast of the concrete sample surface, and will move with it during the tensile deformation process, so that deformation information can be captured more comprehensively, and it is also helpful to reduce the subsequent image analysis error. Further, the high-speed camera device is adjusted to be flush with the concrete sample, and the speckle segment of the concrete sample is photographed to obtain an original speckle image set, and the original speckle image set is compressed and transmitted to the data feedback unit by using the image acquisition unit. It can be seen that the embodiment of the present invention uses the high-speed camera device to capture the digital signal of the speckle image and transmits it to the data feedback unit. Further, the tensile test unit is used to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, and the high-speed camera device is used to capture the digital signal of the speckle image. The deformation speckle image set of the concrete sample before and after the fracture is collected, and the deformation speckle image set is compressed and sent to the data feedback unit. It can be seen that the embodiment of the present invention performs step-by-step loading and stretching on the concrete sample, the purpose is to understand the mechanical behavior of the concrete sample under different load levels, so that the analysis result is more accurate, and the high-speed camera device has a high-speed real-time acquisition frame rate, which can accurately capture the moment when the test product actually fractures. Further, when the data feedback unit receives the compressed deformation speckle image set, the compressed original speckle image set and the deformation speckle image set are substituted into the pre-constructed image analysis model, and the temperature change data recorded by the temperature sensor unit throughout the process is substituted into the pre-constructed heat conduction model, and the tensile strength of the concrete sample is obtained by comprehensive analysis. It can be seen that after the embodiment of the present invention obtains the digital signal in the pre-operation, the image analysis model is combined with the thermal operation to extract the mechanical change characteristics of the target speckle image before and after the accurate fracture occurs, and then the performance test results of the concrete sample are calculated. Finally, according to the performance test results, the concrete performance improvement measures are formulated in a targeted manner. Therefore, the concrete performance improvement method based on temperature rise property monitoring and analysis proposed by the present invention can improve the accuracy of concrete performance testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 A schematic flow chart of a method for improving concrete performance based on temperature rise property monitoring and analysis provided by one embodiment of the present invention;

[0066] Figure 2 A functional module diagram of a concrete performance improvement system based on temperature rise characteristics monitoring and analysis provided by an embodiment of the present invention;

[0067] Figure 3A schematic diagram of the structure of an electronic device for implementing the method for improving concrete performance based on temperature rise behavior monitoring and analysis provided by an embodiment of the present invention.

[0068] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0069] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0070] The embodiment of the present application provides a method for improving concrete performance based on temperature rise property monitoring and analysis. The execution subject of the method for improving concrete performance based on temperature rise property monitoring and analysis includes but is not limited to at least one of the electronic devices such as a server and a terminal that can be configured to execute the method provided in the embodiment of the present application. In other words, the method for improving concrete performance based on temperature rise property monitoring and analysis can be executed by software or hardware installed in a terminal device or a server device. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0071] Embodiment 1:

[0072] Reference Figure 1 FIG. 1 is a flow chart of a method for improving concrete performance based on temperature rise behavior monitoring and analysis provided by an embodiment of the present invention. In this embodiment, the method for improving concrete performance based on temperature rise behavior monitoring and analysis includes:

[0073] S1. Receive a concrete performance test instruction, and start a concrete performance test device according to the concrete performance test instruction, wherein the performance test device is composed of a tensile test unit, an image acquisition unit, a temperature sensor unit and a data feedback unit.

[0074] For example, Xiao Zhang is a quality manager of a concrete production plant. His job is to be responsible for the quality acceptance of concrete. Therefore, Xiao Zhang initiates a concrete performance test instruction, the purpose of which is to obtain the tensile strength of the concrete in the solidified state to verify whether the concrete in the solidified state meets the predetermined quality standards.

[0075] It should be explained that in the embodiment of the present invention, the performance detection device is composed of a tensile test unit, an image acquisition unit, a temperature sensing unit and a data feedback unit. Among them, the tensile test unit gradually applies tensile force to the test sample to make it finally break; the image acquisition unit is embedded with a high-speed camera device, which can take and record the image set of the test sample in the original state, tensile state and broken state; the temperature sensing unit is used to record the temperature change data of the sample before and after the fracture, and analyze the temperature change data through the heat conduction model; the data feedback unit is used to receive the image set, and substitute the image set into the pre-built image analysis model, and combine the temperature change data for comprehensive analysis to obtain the tensile strength of the test sample.

[0076] Importantly, as concrete is a high-strength, high-corrosion-resistant structural material, the tensile testing machines currently on the market still have limitations in test accuracy. Therefore, the embodiments of the present invention consider using the original finished product image as a reference object, and obtain the displacement change of the original pixel point by comparing the tensile deformed finished product image analysis, and then obtain the tensile strength coefficient of the test sample through model calculation.

[0077] S2. Take an equilateral cylindrical concrete sample in a solidified state, wherein the height of the equilateral cylinder is 100 mm to 150 mm, perform a pre-test cleaning process on the concrete sample, and after the cleaning operation is completed, spray a speckle paint evenly on the middle gauge length section of the concrete sample, and fix it to the tensile test unit.

[0078] In detail, the concrete sample is cleaned before the test, and after the cleaning operation is completed, the middle gauge section of the concrete sample is evenly sprayed with speckle paint, and fixed to the tensile test unit, including:

[0079] Immersing the concrete sample in a non-acidic detergent solution, wherein the volume ratio of the non-acidic detergent to water in the non-acidic detergent solution is in the range of 1:15 to 1:20;

[0080] After soaking for 5 to 10 minutes, wipe the surface of the concrete sample with a sponge dipped in a non-acidic detergent solution. After the wiping operation is completed, wipe the concrete sample dry with a sterile cloth;

[0081] Slowly introduce the acetone solution into the cleaning tank of the ultrasonic cleaning equipment, and then immerse the concrete sample in the acetone solution in the cleaning tank to ensure that the concrete sample is completely covered in the acetone solution;

[0082] Turn on the ultrasonic cleaning equipment, perform ultrasonic cleaning on the concrete sample for 10 minutes, and complete the cleaning process of the concrete sample;

[0083] Use a sprayer to evenly spray the speckle paint on the middle gauge length section of the concrete sample, and dry it after spraying;

[0084] The concrete sample is placed on the tensile test unit, and the two ends of the concrete sample are automatically identified and grasped by the tensile test unit to complete the fixation of the concrete sample.

[0085] It can be explained that after the speckle paint is evenly sprayed on the middle gauge section of the concrete sample, the speckle pattern can significantly increase the contrast of the test piece surface and move with it during the tensile deformation of the test piece, so that the image acquisition unit can capture the deformation information of the test piece more comprehensively. At the same time, the high-contrast speckle image set helps to reduce image analysis errors and improve the analysis accuracy of tensile strength.

[0086] Furthermore, placing the concrete sample in the tensile test unit and using the tensile test unit to automatically identify and grasp both ends of the concrete sample to complete the fixing of the concrete sample includes:

[0087] Determine the tensile test unit, wherein the tensile test unit includes an intelligent gripper, a fixture and a vertical adjuster, the fixture is a pair of circular grooves that can automatically adjust the diameter, and are respectively located at the upper and lower sides of the tensile test unit;

[0088] After placing the concrete sample in the tensile test unit, the intelligent gripper is activated, and the concrete sample is gripped and placed vertically between the clamp fixtures;

[0089] When the concrete sample is identified, the position of the fixture is retracted, and the circular grooves on the upper and lower sides begin to move toward each other until they are connected to the two ends of the concrete sample respectively;

[0090] Using the clamp fixture, adjust the diameter of the circular groove until it just wraps around both ends of the concrete sample;

[0091] The vertical adjuster is used to measure the angle between the concrete sample and the table top. If the angle is not 90°, the left and right positions of the clamp fixture are continuously adjusted until the concrete sample is perpendicular to the table top.

[0092] It can be understood that the tensile test unit has the function of fixing the concrete sample, and while fixing the concrete sample, the concrete sample can be made perpendicular to the tabletop, thereby ensuring that the image acquisition unit takes images at a level angle.

[0093] S3. Adjust the high-speed camera device of the image acquisition unit to be flush with the concrete sample. After the adjustment operation is completed, use the high-speed camera device to shoot the speckle segment of the concrete sample to obtain an original speckle image set, and use the image acquisition unit to compress and transmit the original speckle image set to the data feedback unit.

[0094] It can be explained that in the embodiment of the present invention, the high-speed camera device of the image acquisition unit is a digital industrial CCD camera, which not only has a high resolution but also has an excellent real-time acquisition frame rate, such as OptronisCP80-4-C-500 and OptronisCP80-4-M-50. Therefore, the high-speed camera device can capture the digital signal of the target speckle image and transmit it to the data feedback unit. The data feedback unit performs model operation on the digital signal of the target image to extract the mechanical change characteristics of the target speckle image before and after tensile fracture, and then calculate the tensile strength of the concrete sample.

[0095] In detail, the process of photographing the speckle segment of the concrete sample using the high-speed camera device to obtain an original speckle image set, and compressing and transmitting the original speckle image set to the data feedback unit using the image acquisition unit includes:

[0096] Determining the image acquisition unit, wherein the image acquisition unit includes a high-speed camera device, a storage buffer area and an image compression model;

[0097] Starting the high-speed camera device, setting the camera shooting parameters of the high-speed camera device, and shooting the speckle segment of the concrete sample after completing the setting to obtain an original speckle image set;

[0098] Initializing the memory of the storage buffer area, creating a thread connecting the high-speed camera device and the storage buffer area, and sending the original speckle image set to the storage buffer area through the thread;

[0099] Reading the original speckle image set in the storage buffer area, and determining the compressibility of the original speckle image set by using the image compression model, wherein the compressibility indicates a suitable compression degree under the premise of ensuring image quality;

[0100] Based on the compressibility, image compression is performed on the original speckle image set, and the compressed original speckle image set is transmitted to a data feedback unit.

[0101] It should be explained that image set data usually contains a lot of redundant information, which increases the amount of file data and slows down the reading, storage and transmission of images. Therefore, it is necessary to set a suitable compression level for the image set to achieve more efficient data management. However, the compressibility must take into account parameters such as the grayscale, number of pixels, and image information entropy of the actual image, otherwise excessive compression will result in loss of image quality during transmission.

[0102] Furthermore, the using the image compression model to determine the compressibility of the original speckle image set includes:

[0103] Counting the occurrence frequency of each gray value in the original speckle image set, and identifying the number of pixels in the original speckle image set;

[0104] Calculate the pixel ratio occupied by each gray value in the image according to the occurrence frequency and the number of pixels;

[0105] The information entropy value of the original speckle image set is calculated by using the pixel ratio, and the compressibility of the original speckle image set is determined based on the information entropy value.

[0106] Importantly, calculating the proportion of pixels occupied by each grayscale value in the image can be used to identify the key information in the image. Furthermore, selecting a suitable compression method based on the distribution of grayscale values ​​can reduce the amount of image data while retaining important image information.

[0107] Furthermore, the calculating the pixel ratio occupied by each gray value in the image according to the occurrence frequency and the number of pixels includes:

[0108]

[0109] Among them, P i Indicates the pixel ratio occupied by the i-th gray value, Gray i represents the frequency of occurrence of the i-th gray value, and K represents the number of pixels.

[0110] The key point is that the information entropy value is an important indicator used to measure the amount of image information, and the value of the information entropy value is related to the proportion of the image grayscale distribution. When the information entropy value is high, it means that each pixel in the image carries more valuable information data, rather than repeated or similar data. Therefore, when the redundancy is relatively low, the image contains more information.

[0111] In addition, when the information entropy value is high, the compressibility of the image will be relatively low, and not much redundant data can be removed by the compression algorithm; on the contrary, when the information entropy value is low, it indicates that the redundancy of the image is high, so by removing redundant data, the compressibility of the image is correspondingly improved.

[0112] Furthermore, the calculating the information entropy value of the original speckle image set by using the pixel ratio includes:

[0113]

[0114] Among them, H represents the information entropy value, P i Indicates the ratio of pixels occupied by the i-th gray value.

[0115] It should be emphasized that after obtaining the information entropy value of the image, different image compression algorithms can be used to compress the image, and the compressed file size and image quality can be statistically analyzed to obtain a more comprehensive compression evaluation result, thereby further accurately judging the compressibility of the original speckle image set.

[0116] S4, starting the temperature sensing unit, using the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, and at the same time using the high-speed camera device to collect a set of deformation speckle images of the concrete sample before and after the fracture, and using the temperature sensing unit to record the temperature change data of the concrete sample before and after the fracture.

[0117] In detail, the step of using the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks comprises:

[0118] Setting initial test parameters of the tensile test unit, wherein the initial test parameters include test environment temperature, test tensile speed, real-time applied load and maximum allowable load;

[0119] Using the tensile test unit to stretch the concrete sample, and increasing the load by 5% of the maximum allowable load at each level until the real-time applied load reaches 60% of the maximum allowable load, and continuing to maintain the load state for 30 seconds, while checking the state of the tensile test unit and the concrete sample;

[0120] If no abnormality is found, continue to stretch the concrete sample at a load level of 5% of the maximum allowable load at each level until the real-time applied load fully reaches the maximum allowable load, and continue to maintain this load state for 30 seconds while checking the state of the tensile test unit and the concrete sample;

[0121] If no abnormality is found, continue to load and stretch at a load of 2% of the maximum allowable load until the concrete sample breaks.

[0122] It should be explained that the embodiment of the present invention is designed to perform step-by-step loading and stretching on the concrete sample in the tensile test unit. Its function is to make more detailed observations and measurements on the tensile strength performance before approaching the ultimate load that the concrete sample may withstand. Through the above steps, the mechanical behavior of the concrete sample under different load levels can be gradually understood, the accuracy and safety of the test results can be ensured, and whether it meets the quality requirements can be evaluated.

[0123] In addition, since the high-speed camera equipment has a high real-time acquisition frame rate, it can accurately capture the moment when the test sample actually breaks, making the subsequent analysis of the fracture state more accurate.

[0124] S5. Compress the deformed speckle image set and send it to a data feedback unit. When the data feedback unit receives the compressed deformed speckle image set, substitute the compressed original speckle image set and the deformed speckle image set into a pre-built image analysis model, substitute the temperature change data into a pre-built heat conduction model, and obtain the performance test result of the concrete sample by combined analysis.

[0125] It can be understood that the compression and sending of the deformed speckle image set to the data feedback unit is similar to the step in S3, and the following compression process is performed: initializing the memory of the storage buffer area, creating a thread connecting the high-speed camera device and the storage buffer area, sending the deformed speckle image set to the storage buffer area through the thread, and using the image compression model to determine the compressibility of the deformed speckle image set, further performing image compression, and transmitting the compressed deformed speckle image set to the data feedback unit. The specific details will not be described in detail here.

[0126] In detail, the compressed original speckle image set and the deformed speckle image set are substituted into a pre-built image analysis model, the temperature change data is substituted into a pre-built heat conduction model, and the performance test results of the concrete sample are obtained by combined analysis, including:

[0127] Based on the SIFT algorithm, the speckle feature point set before and after deformation is extracted from the compressed original speckle image set and the deformed speckle image set, wherein the speckle feature point set consists of n pairs of speckle feature points before and after deformation;

[0128] By comparing the position changes of the speckle feature point set before and after the deformation, the displacement vector of each pair of the speckle feature points before and after the deformation is calculated;

[0129] Based on the displacement vector, further calculating the deformation statistics of the sample, wherein the deformation statistics include the maximum value, minimum value, average value and standard deviation of the displacement vector, and comprehensively evaluating the overall deformation degree of the concrete sample according to the deformation statistics;

[0130] According to the overall deformation degree, the relevant mechanical parameters of the stress-strain relationship of the concrete sample under different load levels are analyzed, and the temperature change data is substituted into a pre-built heat conduction model to analyze and obtain the internal temperature state of the concrete sample;

[0131] Combining the relevant mechanical parameters and the internal temperature state, a stress-strain curve of the concrete sample is drawn. After the drawing operation is completed, the fracture point of the concrete sample is found from the stress-strain curve, and the stress corresponding to the fracture point is the performance test result of the concrete sample.

[0132] It should be explained that the embodiment of the present invention finally extracts the deformation characteristics of the concrete sample when it is subjected to different loads by processing and analyzing the compressed original speckle image set and the deformed speckle image set, and then calculates and analyzes its overall deformation degree, and finally determines its tensile strength. During the analysis process, the image analysis model successively uses the SIFT algorithm to extract the speckle feature point set before and after deformation, and further calculates the displacement vector of the speckle feature point set through the image registration technology. Finally, according to the overall deformation degree of the concrete sample, combined with thermal and mechanical testing technologies, the stress-strain relationship of the concrete sample under different load levels is fitted.

[0133] S6. Based on the performance test results, formulate targeted measures to improve concrete performance and complete concrete performance improvement based on temperature rise behavior monitoring and analysis.

[0134] It can be understood that based on the test results of the tensile strength of concrete samples, it is possible to evaluate whether the strength performance of concrete meets the design requirements. Based on the performance test results, the mix parameters such as water-cement ratio and aggregate ratio can be adjusted in a targeted manner to improve the strength and durability of concrete.

[0135] Compared with the phenomenon described in the background technology, the embodiment of the present invention first receives a concrete performance test instruction, starts a concrete performance detection device according to the concrete performance test instruction, and after cleaning the equilateral cylindrical concrete sample in the solidified state, sprays the speckle paint evenly on the middle gauge length section of the concrete sample and fixes it to the tensile test unit. It should be emphasized that the speckle pattern after spraying can significantly increase the contrast of the concrete sample surface, and will move with it during the tensile deformation process, so that deformation information can be captured more comprehensively, and it is also helpful to reduce the subsequent image analysis error. Further, the high-speed camera device is adjusted to be flush with the concrete sample, and the speckle segment of the concrete sample is photographed to obtain an original speckle image set, and the original speckle image set is compressed and transmitted to the data feedback unit by using the image acquisition unit. It can be seen that the embodiment of the present invention uses the high-speed camera device to capture the digital signal of the speckle image and transmits it to the data feedback unit. Further, the tensile test unit is used to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, and the high-speed camera device is used to capture the digital signal of the speckle image. The deformation speckle image set of the concrete sample before and after the fracture is collected, and the deformation speckle image set is compressed and sent to the data feedback unit. It can be seen that the embodiment of the present invention performs step-by-step loading and stretching on the concrete sample, the purpose is to understand the mechanical behavior of the concrete sample under different load levels, so that the analysis result is more accurate, and the high-speed camera device has a high-speed real-time acquisition frame rate, which can accurately capture the moment when the test product actually fractures. Further, when the data feedback unit receives the compressed deformation speckle image set, the compressed original speckle image set and the deformation speckle image set are substituted into the pre-constructed image analysis model, and the temperature change data recorded by the temperature sensor unit throughout the process is substituted into the pre-constructed heat conduction model, and the tensile strength of the concrete sample is obtained by comprehensive analysis. It can be seen that after the embodiment of the present invention obtains the digital signal in the pre-operation, the image analysis model is combined with the thermal operation to extract the mechanical change characteristics of the target speckle image before and after the accurate fracture occurs, and then the performance test results of the concrete sample are calculated. Finally, according to the performance test results, the concrete performance improvement measures are formulated in a targeted manner. Therefore, the concrete performance improvement method based on temperature rise property monitoring and analysis proposed by the present invention can improve the accuracy of concrete performance testing.

[0136] Embodiment 2:

[0137] like Figure 2 , which is a functional module diagram of a concrete performance improvement system based on temperature rise behavior monitoring and analysis provided by an embodiment of the present invention.

[0138] The concrete performance improvement system 100 based on temperature rise property monitoring and analysis of the present invention can be installed in an electronic device. According to the functions implemented, the concrete performance improvement system 100 based on temperature rise property monitoring and analysis can include a test instruction receiving module 101, a concrete sample fixing module 102, an original image shooting module 103, a step-by-step tensile test module 104 and a data feedback analysis module 105. The module of the present invention can also be called a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0139] The test instruction receiving module 101 is used to receive a concrete performance test instruction and start a concrete performance detection device according to the concrete performance test instruction, wherein the performance detection device is composed of a tensile test unit, an image acquisition unit, a temperature sensing unit and a data feedback unit;

[0140] The concrete sample fixing module 102 is used to take an equilateral cylindrical concrete sample in a solidified state, wherein the height of the equilateral cylinder is 100 mm to 150 mm, and perform a pre-test cleaning process on the concrete sample. After the cleaning operation is completed, the middle gauge length section of the concrete sample is evenly sprayed with speckle paint, and then fixed to the tensile test unit;

[0141] The original image shooting module 103 is used to adjust the high-speed camera device of the image acquisition unit to be flush with the concrete sample. After the adjustment operation is completed, the speckle segment of the concrete sample is photographed by the high-speed camera device to obtain an original speckle image set, and the original speckle image set is compressed and transmitted to the data feedback unit by the image acquisition unit;

[0142] The step-by-step tensile test module 104 is used to start the temperature sensing unit, and use the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, and at the same time use the high-speed camera device to collect a set of deformation speckle images of the concrete sample before and after the break, and use the temperature sensing unit to record the temperature change data of the concrete sample before and after the break;

[0143] The data feedback analysis module 105 is used to compress the deformation speckle image set and send it to the data feedback unit. When the data feedback unit receives the compressed deformation speckle image set, the compressed original speckle image set and the deformation speckle image set are substituted into a pre-built image analysis model, and the temperature change data is substituted into a pre-built heat conduction model, and the performance test results of the concrete sample are obtained through combined analysis. According to the performance test results, targeted concrete performance improvement measures are formulated to complete the concrete performance improvement based on the temperature rise property monitoring and analysis.

[0144] In detail, each module in the concrete performance improvement system 100 based on temperature rise property monitoring and analysis in the embodiment of the present invention is used in the same manner as described above. Figure 1 The same technical means are used as the method for improving concrete performance based on temperature rise characteristics monitoring and analysis described in , and can produce the same technical effects, so they will not be repeated here.

[0145] Embodiment 3:

[0146] like Figure 3 , which is a schematic diagram of the structure of an electronic device for implementing a method for improving concrete performance based on temperature rise property monitoring and analysis provided by an embodiment of the present invention.

[0147] The electronic device 1 may include a processor 10, a memory 11, a bus 12 and a communication interface 13, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as a concrete performance improvement program based on temperature rise behavior monitoring and analysis.

[0148] Among them, the memory 11 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (for example: SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. The memory 11 may be an internal storage unit of the electronic device 1 in some embodiments, such as a mobile hard disk of the electronic device 1. The memory 11 may also be an external storage device of the electronic device 1 in other embodiments, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (SecureDigital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device 1. Further, the memory 11 may also include both an internal storage unit of the electronic device 1 and an external storage device. The memory 11 can not only be used to store application software and various types of data installed in the electronic device 1, such as the code of the concrete performance improvement program based on the temperature rise property monitoring and analysis, but also can be used to temporarily store data that has been output or is to be output.

[0149] In some embodiments, the processor 10 may be composed of an integrated circuit, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips, etc. The processor 10 is the control core (Control Unit) of the electronic device, and uses various interfaces and lines to connect various components of the entire electronic device, and executes or executes programs or modules stored in the memory 11 (such as a concrete performance improvement program based on temperature rise behavior monitoring and analysis, etc.), and calls data stored in the memory 11 to execute various functions of the electronic device 1 and process data.

[0150] The bus may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The bus is configured to realize connection and communication between the memory 11 and at least one processor 10, etc.

[0151] Figure 3 Only an electronic device with components is shown, and those skilled in the art will understand that Figure 3 The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown in the figure, or combine certain components, or arrange the components differently.

[0152] For example, although not shown, the electronic device 1 may also include a power source (such as a battery) for supplying power to each component. Preferably, the power source may be logically connected to the at least one processor 10 through a power management system, so that the power management system can realize functions such as charging management, discharging management, and power consumption management. The power source may also include any components such as one or more DC or AC power sources, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators. The electronic device 1 may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0153] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device 1 and other electronic devices.

[0154] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), or a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode) touch device. The display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device 1 and to display a visual user interface.

[0155] It should be understood that the embodiment is for illustration only and the scope of the patent application is not limited to this structure.

[0156] The concrete performance improvement program based on temperature rise property monitoring and analysis stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When running in the processor 10, it can achieve:

[0157] receiving a concrete performance test instruction, and starting a concrete performance test device according to the concrete performance test instruction, wherein the performance test device is composed of a tensile test unit, an image acquisition unit, a temperature sensor unit, and a data feedback unit;

[0158] Take an equilateral cylindrical concrete sample in a solidified state, wherein the height of the equilateral cylinder is 100 mm to 150 mm, perform a pre-test cleaning process on the concrete sample, and after the cleaning operation is completed, spray a speckle paint evenly on the middle gauge length section of the concrete sample, and fix it to the tensile test unit;

[0159] Adjusting the high-speed camera device of the image acquisition unit to be flush with the concrete sample, and after the adjustment operation is completed, using the high-speed camera device to shoot the speckle segment of the concrete sample to obtain an original speckle image set, and using the image acquisition unit to compress and transmit the original speckle image set to the data feedback unit;

[0160] Starting the temperature sensing unit, using the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, while using the high-speed camera device to collect a set of deformation speckle images of the concrete sample before and after the break, and using the temperature sensing unit to record temperature change data of the concrete sample before and after the break;

[0161] The deformed speckle image set is compressed and sent to a data feedback unit. When the data feedback unit receives the compressed deformed speckle image set, the compressed original speckle image set and the deformed speckle image set are substituted into a pre-built image analysis model, the temperature change data is substituted into a pre-built heat conduction model, and the performance test result of the concrete sample is obtained by combined analysis;

[0162] According to the performance test results, formulate targeted measures to improve concrete performance, and complete the concrete performance improvement based on temperature rise behavior monitoring and analysis.

[0163] Specifically, the specific implementation method of the processor 10 for the above instructions can refer to Figure 1 to Figure 2 The description of the relevant steps in the corresponding embodiments will not be repeated here.

[0164] Furthermore, if the module / unit integrated in the electronic device 1 is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or system capable of carrying the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0165] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor of an electronic device, the computer program can implement:

[0166] receiving a concrete performance test instruction, and starting a concrete performance test device according to the concrete performance test instruction, wherein the performance test device is composed of a tensile test unit, an image acquisition unit, a temperature sensor unit, and a data feedback unit;

[0167] Take an equilateral cylindrical concrete sample in a solidified state, wherein the height of the equilateral cylinder is 100 mm to 150 mm, perform a pre-test cleaning process on the concrete sample, and after the cleaning operation is completed, spray a speckle paint evenly on the middle gauge length section of the concrete sample, and fix it to the tensile test unit;

[0168] Adjusting the high-speed camera device of the image acquisition unit to be flush with the concrete sample, and after the adjustment operation is completed, using the high-speed camera device to shoot the speckle segment of the concrete sample to obtain an original speckle image set, and using the image acquisition unit to compress and transmit the original speckle image set to the data feedback unit;

[0169] Starting the temperature sensing unit, using the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, while using the high-speed camera device to collect a set of deformation speckle images of the concrete sample before and after the break, and using the temperature sensing unit to record temperature change data of the concrete sample before and after the break;

[0170] The deformed speckle image set is compressed and sent to a data feedback unit. When the data feedback unit receives the compressed deformed speckle image set, the compressed original speckle image set and the deformed speckle image set are substituted into a pre-built image analysis model, the temperature change data is substituted into a pre-built heat conduction model, and the performance test result of the concrete sample is obtained by combined analysis;

[0171] According to the performance test results, formulate targeted measures to improve concrete performance, and complete the concrete performance improvement based on temperature rise behavior monitoring and analysis.

[0172] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

[0173] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0174] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0175] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0176] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A method for improving concrete performance based on temperature rise characteristics monitoring and analysis, characterized in that: The method comprises: receiving a concrete performance test instruction, and starting a concrete performance test device according to the concrete performance test instruction, wherein the performance test device is composed of a tensile test unit, an image acquisition unit, a temperature sensor unit, and a data feedback unit; Take an equilateral cylindrical concrete sample in a solidified state, wherein the height of the equilateral cylinder is 100 mm to 150 mm, perform a pre-test cleaning process on the concrete sample, and after the cleaning operation is completed, spray a speckle paint evenly on the middle gauge length section of the concrete sample, and fix it to the tensile test unit; Adjusting the high-speed camera device of the image acquisition unit to be flush with the concrete sample, and after the adjustment operation is completed, using the high-speed camera device to shoot the speckle segment of the concrete sample to obtain an original speckle image set, and using the image acquisition unit to compress and transmit the original speckle image set to the data feedback unit; Starting the temperature sensing unit, using the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, while using the high-speed camera device to collect a set of deformation speckle images of the concrete sample before and after the break, and using the temperature sensing unit to record temperature change data of the concrete sample before and after the break; The deformed speckle image set is compressed and sent to a data feedback unit. When the data feedback unit receives the compressed deformed speckle image set, the compressed original speckle image set and the deformed speckle image set are substituted into a pre-built image analysis model, the temperature change data is substituted into a pre-built heat conduction model, and the performance test result of the concrete sample is obtained by combined analysis; According to the performance test results, formulate targeted measures to improve concrete performance, and complete the concrete performance improvement based on temperature rise behavior monitoring and analysis.

2. The method for improving concrete performance based on temperature rise property monitoring and analysis according to claim 1, characterized in that: The concrete sample is cleaned before the test, and after the cleaning operation is completed, the middle gauge section of the concrete sample is evenly sprayed with speckle paint, and fixed to the tensile test unit, including: Immersing the concrete sample in a non-acidic detergent solution, wherein the volume ratio of the non-acidic detergent to water in the non-acidic detergent solution is in the range of 1:15 to 1:20; After soaking for 5 to 10 minutes, wipe the surface of the concrete sample with a sponge dipped in a non-acidic detergent solution. After the wiping operation is completed, wipe the concrete sample dry with a sterile cloth; Slowly introduce the acetone solution into the cleaning tank of the ultrasonic cleaning equipment, and then immerse the concrete sample in the acetone solution in the cleaning tank to ensure that the concrete sample is completely covered in the acetone solution; Turn on the ultrasonic cleaning equipment, perform ultrasonic cleaning on the concrete sample for 10 minutes, and complete the cleaning process of the concrete sample; Use a sprayer to evenly spray the speckle paint on the middle gauge length section of the concrete sample, and dry it after spraying; The concrete sample is placed on the tensile test unit, and the two ends of the concrete sample are automatically identified and grasped by the tensile test unit to complete the fixation of the concrete sample.

3. The method for improving concrete performance based on temperature rise property monitoring and analysis according to claim 2, characterized in that: The step of placing the concrete sample on the tensile test unit and using the tensile test unit to automatically identify and grasp both ends of the concrete sample to complete the fixing of the concrete sample includes: Determine the tensile test unit, wherein the tensile test unit includes an intelligent gripper, a fixture and a vertical adjuster, the fixture is a pair of circular grooves that can automatically adjust the diameter, and are respectively located at the upper and lower sides of the tensile test unit; After placing the concrete sample in the tensile test unit, the intelligent gripper is activated, and the concrete sample is gripped and placed vertically between the clamp fixtures; When the concrete sample is identified, the position of the fixture is retracted, and the circular grooves on the upper and lower sides begin to move toward each other until they are connected to the two ends of the concrete sample respectively; Using the clamp fixture, adjust the diameter of the circular groove until it just wraps around both ends of the concrete sample; The vertical adjuster is used to measure the angle between the concrete sample and the table top. If the angle is not 90°, the left and right positions of the clamp fixture are continuously adjusted until the concrete sample is perpendicular to the table top. It can be understood that the tensile test unit has the function of fixing the concrete sample, and while fixing the concrete sample, the concrete sample can be made perpendicular to the tabletop, thereby ensuring that the image acquisition unit takes images at a level angle.

4. The method for improving concrete performance based on temperature rise property monitoring and analysis according to claim 3, characterized in that: The method of using the high-speed camera device to shoot the speckle segment of the concrete sample to obtain an original speckle image set, and using the image acquisition unit to compress and transmit the original speckle image set to a data feedback unit includes: Determining the image acquisition unit, wherein the image acquisition unit includes a high-speed camera device, a storage buffer area and an image compression model; Starting the high-speed camera device, setting the camera shooting parameters of the high-speed camera device, and shooting the speckle segment of the concrete sample after completing the setting to obtain an original speckle image set; Initializing the memory of the storage buffer area, creating a thread connecting the high-speed camera device and the storage buffer area, and sending the original speckle image set to the storage buffer area through the thread; Reading the original speckle image set in the storage buffer area, and determining the compressibility of the original speckle image set by using the image compression model, wherein the compressibility indicates a suitable compression degree under the premise of ensuring image quality; Based on the compressibility, image compression is performed on the original speckle image set, and the compressed original speckle image set is transmitted to a data feedback unit.

5. The method for improving concrete performance based on temperature rise property monitoring and analysis according to claim 4, characterized in that: The using the image compression model to determine the compressibility of the original speckle image set includes: Counting the occurrence frequency of each gray value in the original speckle image set, and identifying the number of pixels in the original speckle image set; Calculate the pixel ratio occupied by each gray value in the image according to the occurrence frequency and the number of pixels; The information entropy value of the original speckle image set is calculated by using the pixel ratio, and the compressibility of the original speckle image set is determined based on the information entropy value.

6. The method for improving concrete performance based on temperature rise property monitoring and analysis according to claim 5, characterized in that: The calculating the pixel ratio occupied by each gray value in the image according to the occurrence frequency and the number of pixels includes: Among them, P i Indicates the pixel ratio occupied by the i-th gray value, Gray i represents the frequency of occurrence of the i-th gray value, and K represents the number of pixels.

7. The method for improving concrete performance based on temperature rise property monitoring and analysis according to claim 6, characterized in that: The step of calculating the information entropy value of the original speckle image set by using the pixel ratio includes: Among them, H represents the information entropy value, P i Indicates the ratio of pixels occupied by the i-th gray value.

8. The method for improving concrete performance based on temperature rise property monitoring and analysis according to claim 7, characterized in that: The step of using the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks comprises: Setting initial test parameters of the tensile test unit, wherein the initial test parameters include test environment temperature, test tensile speed, real-time applied load and maximum allowable load; Using the tensile test unit to stretch the concrete sample, and increasing the load by 5% of the maximum allowable load at each level until the real-time applied load reaches 60% of the maximum allowable load, and continuing to maintain the load state for 30 seconds, while checking the state of the tensile test unit and the concrete sample; If no abnormality is found, continue to stretch the concrete sample at a load level of 5% of the maximum allowable load at each level until the real-time applied load fully reaches the maximum allowable load, and continue to maintain this load state for 30 seconds while checking the state of the tensile test unit and the concrete sample; If no abnormality is found, continue to load and stretch at a load of 2% of the maximum allowable load until the concrete sample breaks.

9. The method for improving concrete performance based on temperature rise property monitoring and analysis according to claim 8, characterized in that: Substituting the compressed original speckle image set and the deformed speckle image set into a pre-built image analysis model, substituting the temperature change data into a pre-built heat conduction model, and combining the analysis to obtain the performance test results of the concrete sample, includes: Based on the SIFT algorithm, the speckle feature point set before and after deformation is extracted from the compressed original speckle image set and the deformed speckle image set, wherein the speckle feature point set consists of n pairs of speckle feature points before and after deformation; By comparing the position changes of the speckle feature point set before and after the deformation, the displacement vector of each pair of the speckle feature points before and after the deformation is calculated; Based on the displacement vector, further calculating the deformation statistics of the sample, wherein the deformation statistics include the maximum value, minimum value, average value and standard deviation of the displacement vector, and comprehensively evaluating the overall deformation degree of the concrete sample according to the deformation statistics; According to the overall deformation degree, the relevant mechanical parameters of the stress-strain relationship of the concrete sample under different load levels are analyzed, and the temperature change data is substituted into a pre-built heat conduction model to analyze and obtain the internal temperature state of the concrete sample; Combining the relevant mechanical parameters and the internal temperature state, a stress-strain curve of the concrete sample is drawn. After the drawing operation is completed, the fracture point of the concrete sample is found from the stress-strain curve, and the stress corresponding to the fracture point is the performance test result of the concrete sample.

10. A concrete performance improvement system based on temperature rise characteristics monitoring and analysis, characterized in that: The system comprises: A test instruction receiving module, used for receiving a concrete performance test instruction, and starting a concrete performance detection device according to the concrete performance test instruction, wherein the performance detection device is composed of a tensile test unit, an image acquisition unit, a temperature sensing unit and a data feedback unit; A concrete sample fixing module is used to take an equilateral cylindrical concrete sample in a solidified state, wherein the height of the equilateral cylinder is 100 mm to 150 mm, and perform a pre-test cleaning process on the concrete sample. After the cleaning operation is completed, the middle gauge section of the concrete sample is evenly sprayed with speckle paint, and then fixed to the tensile test unit; an original image shooting module, used for adjusting the high-speed camera device of the image acquisition unit to be flush with the concrete sample, and after the adjustment operation is completed, using the high-speed camera device to shoot the speckle segment of the concrete sample to obtain an original speckle image set, and using the image acquisition unit to compress and transmit the original speckle image set to the data feedback unit; a step-by-step tensile test module, for starting the temperature sensing unit, and using the tensile test unit to perform step-by-step loading and stretching on the concrete sample until the concrete sample breaks, and at the same time using the high-speed camera device to collect a set of deformation speckle images of the concrete sample before and after the break, and using the temperature sensing unit to record the temperature change data of the concrete sample before and after the break; a data feedback analysis module, configured to compress the deformed speckle image set and send it to a data feedback unit; when the data feedback unit receives the compressed deformed speckle image set, the compressed original speckle image set and the deformed speckle image set are substituted into a pre-built image analysis model, the temperature change data are substituted into a pre-built heat conduction model, and the performance test results of the concrete samples are obtained through combined analysis; and according to the performance test results, targeted concrete performance improvement measures are formulated to complete the concrete performance improvement based on the temperature rise property monitoring and analysis.

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