Multi-channel automatic water supply system for concrete impermeability instrument

Abstract

The invention discloses a multi-channel automatic water supply system for a concrete impermeability instrument. Comprising a control module, the control module is electrically connected with a data preprocessing module, the data preprocessing module is electrically connected with a data acquisition module, a three-dimensional building module and a data analysis module, the data analysis module is electrically connected with a PID control module, and the PID control module is electrically connected with a driving module. The driving module is electrically connected with a power equipment module, and the control module is electrically connected with the driving module; according to the invention, the permeation condition of concrete is monitored through X-rays, so that the permeation path can be calculated and obtained conveniently; the collected flow velocity, pressure and liquid level data are generated into a broken line graph, visual observation is facilitated, follow-up data information is predicted through a regression algorithm, and the accuracy of automatic control is improved; water supply is automatically controlled through the PID control module.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete impermeability testers, and more specifically, particularly relates to a multi-channel automatic water supply system for a concrete impermeability tester. Background Art

[0002] Concrete is an artificial stone widely used in construction. For some buildings, such as hydraulic structures and other construction projects, the buildings are required to have special properties - impermeability. The so-called impermeability refers to the ability of the materials used in the structure to resist the penetration of water and other liquids (light oil, heavy oil) under pressure. The HS-4 impermeability tester is mainly used for the test of concrete impermeability and the determination of impermeability grades. At the same time, it can also be used to determine the air permeability and quality inspection of building materials, so it has been widely used in relevant production, construction, design, teaching and research departments.

[0003] In the performance test of concrete, impermeability is an important indicator for evaluating the durability of concrete and the safety of the project. As a special device for testing the impermeability of concrete, the concrete impermeability tester usually determines the permeability of concrete samples by applying water pressure. Traditional concrete impermeability testers generally use a single-channel water supply system, and their operation process is relatively simple, but there are problems such as low efficiency and cumbersome operation when testing multiple samples at the same time.

[0004] With the improvement of engineering quality requirements, more and more researchers and engineers hope to conduct efficient and accurate permeability tests on multiple concrete samples in a shorter time. To this end, it is particularly important to develop a multi-channel automatic water supply system that can supply water, monitor and record data for multiple samples at the same time.

[0005] However, there are some problems with the existing technology: most of the water-insulation testers on the market currently use manual water supply or single-channel water supply, lacking automated control of the test process, which requires operators to frequently monitor water pressure changes during the experiment, increasing the possibility of human error and making it difficult to quickly test multiple samples. In addition, the existing technology lacks monitoring of permeability, so we propose a multi-channel automatic water supply system for concrete water-insulation testers. Summary of the invention

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a multi-channel automatic water supply system for a concrete permeability tester, which realizes the automatic control operation of the permeability tester through automated control and monitoring of concrete penetration by X-rays, and facilitates the accurate acquisition of the concrete penetration conditions.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-channel automatic water supply system for a concrete impermeability tester, comprising a control module, the control module is electrically connected to a data preprocessing module, the data preprocessing module is electrically connected to a data acquisition module, a three-dimensional building module and a data analysis module, the data analysis module is electrically connected to a PID control module, the PID control module is electrically connected to a drive module, the drive module is electrically connected to a power equipment module, and the control module is electrically connected to the drive module; The data acquisition module is used to collect and obtain various parameter information of the concrete impermeability tester, including a flow rate monitoring module for monitoring the flow rate of the infiltrating liquid, a pressure monitoring module for monitoring the pressure of the infiltrating liquid, a liquid level monitoring module for monitoring the liquid level height of the infiltrating liquid, and an X-ray monitoring module for obtaining the penetration status of the concrete. The flow rate monitoring module and the pressure monitoring module are arranged on the water delivery pipeline, and the liquid level monitoring module and the X-ray monitoring module are arranged inside the impermeability tester; The three-dimensional construction module collects two-dimensional X-ray images at different angles in the concrete impermeability test through the X-ray monitoring module, and uses a filtering algorithm to remove noise from the two-dimensional X-ray images, and then uses a histogram equalization technology to enhance the contrast of the image and improve the visibility of the features, and then uses feature point matching or image registration algorithms to align the images at different angles to ensure that all images are in the same coordinate system, and finally uses a volume rendering algorithm to synthesize the two-dimensional images into three-dimensional volume data to realize the collection of the penetration path in the concrete; The data analysis module processes the flow rate data after filtering, cleaning and conversion by the data preprocessing module. , pressure intensity and liquid level Acquire and collect the flow rate data , pressure intensity and liquid level Convert into corresponding set data, namely velocity data set , pressure intensity set and the level set , and then the velocity data set , pressure intensity set and the level set Generate a visual line graph, and predict the value of subsequent data information based on the trend of the line graph and the regression algorithm; The PID control module receives the threshold information set by the control module and compares the set threshold information with the flow rate data. , pressure intensity and liquid level The comparison is used to determine whether the flow rate, pressure and liquid level exceed the set threshold value, and the PID control module directly controls and adjusts the driving module according to the calculated result, so that the driving module starts and controls the power equipment module to achieve control and adjustment of the flow rate, pressure and liquid level of the anti-osmosis instrument.

[0008] Specifically, the data preprocessing module is used to perform data filtering, data cleaning and data conversion on the data information collected by the data acquisition module; the data filtering is used to filter out noise from the data information collected by the data acquisition module to improve the accuracy of the data information; the data cleaning is used to remove abnormal data from the data information collected by the data acquisition module and supplement missing values ​​in the data information; the data conversion is used to perform unified and standardized processing on the data information collected by the data acquisition module.

[0009] Specifically, the data filtering removes the noise in the data information through a moving average filter, and the calculation formula of the moving average filter is as follows: ,in, represents the number of samples considered when computing the mean for a given window size, Represented as the output value after filtering, Represented as the current sample and its previous samples, from 0 to change, Express The sample values ​​are averaged to obtain the filter value at the current moment; The data cleaning detects abnormal values ​​through Z-score, and the calculation formula of Z-score is as follows: ,in, Expressed as the Z-score of a data point, is represented as the value of the data point, is the mean of the data set, It is expressed as the standard deviation of the data set. Data points with a Z-score greater than 3 or less than -3 are considered outliers. Outliers are removed and the mean is calculated. Fill in outliers or missing values.

[0010] The data conversion is processed by minimum-maximum normalization, mapping the data information to The minimum-maximum normalization formula is as follows: ,in, is represented as the value of the data point, Represents the normalized data value. Represented as the maximum value among the data points, Expressed as the minimum value among the data points.

[0011] Specifically, the two-dimensional X-ray image is smoothed by Gaussian filtering to remove noise in the image, and the calculation formula of Gaussian filtering is as follows: ,in, Represented as the processed output image at position The pixel value of Represented as the input image at position The pixel value of the pixel is used to calculate the center pixel of its neighborhood The new value of Expressed as standard deviation, it controls the width of the Gaussian function; Expressed as a normalization constant, ensuring that the integral of the Gaussian function is 1; It is expressed as the value of a Gaussian function, which determines the degree of influence of each pixel in the neighborhood on the central pixel; Represented as pixels To center pixel The square of the distance.

[0012] Specifically, the calculation of the feature point matching is as follows: , in, and are the descriptor vectors of the two feature points, is a descriptor and The Euclidean distance between Measures the similarity between two feature point descriptors in images at different angles.

[0013] Specifically, the PID control module determines whether it is necessary to adjust and control the anti-osmosis instrument by comparing the collected data information with the set threshold information. The calculation formula of the PID control module is as follows: ,in, is the output of the controller, is the system error, is the proportional gain coefficient, is the integral gain coefficient, is the differential gain coefficient, is the integral part of the error, is the differential part of the error; in, The calculation of is as follows: ,in, is the set flow rate value, is the actual measured flow rate value, and ,in, is the set pressure value, is the actual measured pressure value, and ,in, is the set liquid level value, is the actual measured liquid level value; When the actually measured flow rate value, pressure value or liquid level value is higher or lower than the set threshold value, the PID control module controls the power equipment module through the driving module to perform automatic regulation and control.

[0014] Specifically, the power equipment module includes a pump body for supplying water or other permeable liquids, and includes a pipeline for transporting water or other permeable liquids, and the pipeline includes the flow rate monitoring module and the pressure monitoring module for monitoring the flow rate and pressure of the water or other permeable liquids, and an electromagnetic valve for on-off control is provided on the pipeline, and the power equipment module also includes a booster pump for adjusting the pressure.

[0015] Specifically, the regression algorithm predicts the value of subsequent data information, and the calculation process is as follows: The calculation formula for linear regression is: ;in, is the target variable, the value to be predicted; is the input feature; is the intercept term; is the regression coefficient; is the error term, which represents the difference between the predicted value and the true value; Calculate the regression coefficients by the least squares method of linear regression: ,in, Expressed as The true target value of samples, Expressed as The predicted value of the sample is calculated by the regression equation; Using matrix notation, the solution that minimizes the sum of squared errors is: ,in: is a A matrix containing all input features; yes The transposed matrix of is a , which represents the covariance matrix of the independent variables; is a The target variable vector; is the column vector of regression coefficients; Any new input data , use the following formula to predict its target value ; ; in, is the predicted target value, are the regression coefficients calculated from the training data.

[0016] Specifically, the control module is electrically connected to a voltage regulating module, the voltage regulating module is electrically connected to a power supply module, the power supply module uses a municipal power grid, and the control module is electrically connected to an auxiliary module, the auxiliary module includes a touch display for displaying data information and setting thresholds, an audible and visual alarm for alarming when the monitoring value exceeds the threshold, a data interface for connecting an external device, and a memory for storing data information.

[0017] Specifically, the voltage regulation module includes a step-down circuit for converting the high voltage of the municipal power grid into a low voltage, a rectifier circuit for converting the AC voltage of the municipal power grid into a DC voltage, a filter circuit for filtering out the AC voltage in the DC voltage, and a voltage stabilizing circuit for outputting a stable voltage.

[0018] Technical effects and advantages of the present invention: The present invention monitors the penetration of concrete through X-rays, processes the images taken by X-rays, and synthesizes the images taken into three-dimensional data, so as to facilitate the observation of the penetration conditions at different positions and the calculation and acquisition of the penetration depth; When the present invention is used, the flow rate, pressure and liquid level of the water supply or other permeation liquid of the permeameter are monitored, and the collected flow rate, pressure and liquid level data are converted into a collection form, so as to generate a line graph, observe various data information intuitively, and predict subsequent data information through a regression algorithm, so as to improve the accuracy of the automatic control of the permeameter; The present invention realizes automation of water supply through a PID control module, and adopts separate control of multiple channels, so that the permeameter can realize separate control and adjustment when simultaneously monitoring the permeability of multiple concretes, and compares the actual data information of the flow rate, pressure and liquid level monitoring with the set threshold information. After comparison and judgment, the power equipment module is controlled through PID to realize automatic water supply to the permeameter, and can realize adjustment and control of the flow rate, pressure and liquid level, thereby improving the accuracy of concrete permeability monitoring.

[0019] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the system structure provided by the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] like Figure 1 As shown, a multi-channel automatic water supply system for a concrete impermeability tester provided by an embodiment of the present invention includes a control module, the control module is electrically connected to a data preprocessing module, the data preprocessing module is electrically connected to a data acquisition module, a three-dimensional building module and a data analysis module, the data analysis module is electrically connected to a PID control module, the PID control module is electrically connected to a drive module, the drive module is electrically connected to a power equipment module, and the control module is electrically connected to the drive module; The data acquisition module is used to collect and obtain various parameter information of the concrete impermeability tester, including a flow rate monitoring module for monitoring the flow rate of the infiltrating liquid, a pressure monitoring module for monitoring the pressure of the infiltrating liquid, a liquid level monitoring module for monitoring the liquid level height of the infiltrating liquid, and an X-ray monitoring module for obtaining the penetration status of the concrete. The flow rate monitoring module and the pressure monitoring module are arranged on the water delivery pipeline, and the liquid level monitoring module and the X-ray monitoring module are arranged inside the impermeability tester; The three-dimensional construction module collects two-dimensional X-ray images at different angles in the concrete impermeability test through the X-ray monitoring module, and uses a filtering algorithm to remove noise from the two-dimensional X-ray images, and then uses a histogram equalization technology to enhance the contrast of the image and improve the visibility of the features, and then uses feature point matching or image registration algorithms to align the images at different angles to ensure that all images are in the same coordinate system, and finally uses a volume rendering algorithm to synthesize the two-dimensional images into three-dimensional volume data to realize the collection of the penetration path in the concrete; The data analysis module processes the flow rate data after filtering, cleaning and conversion by the data preprocessing module. , pressure intensity and liquid level Acquire and collect the flow rate data , pressure intensity and liquid level Convert into corresponding set data, namely velocity data set , pressure intensity set and the level set , and then the velocity data set , pressure intensity set and the level set Generate a visual line graph, and predict the value of subsequent data information based on the trend of the line graph and the regression algorithm; The PID control module receives the threshold information set by the control module and compares the set threshold information with the flow rate data. , pressure intensity and liquid level The comparison is used to determine whether the flow rate, pressure and liquid level exceed the set threshold value, and the PID control module directly controls and adjusts the driving module according to the calculated result, so that the driving module starts and controls the power equipment module to achieve control and adjustment of the flow rate, pressure and liquid level of the anti-osmosis instrument.

[0023] In this embodiment, preferably, the data preprocessing module is used to perform data filtering, data cleaning and data conversion on the data information collected by the data acquisition module; the data filtering is used to filter out clutter from the data information collected by the data acquisition module to improve the accuracy of the data information; the data cleaning is used to remove abnormal data from the data information collected by the data acquisition module and supplement missing values ​​in the data information; the data conversion is used to perform unified standardization on the data information collected by the data acquisition module; It should be noted that by filtering, cleaning and converting the data information, the accuracy of the data information can be improved, the noise interference of the data information in subsequent calculations can be reduced, as well as the influence of outliers or missing values, and the data information can be mapped to It effectively reduces the computing pressure of data information and improves the computing efficiency of data information.

[0024] In this embodiment, preferably, the data filtering removes noise in the data information by a moving average filter, and the calculation formula of the moving average filter is as follows: ,in, represents the number of samples considered when computing the mean for a given window size, Represented as the output value after filtering, Represented as the current sample and its previous samples, from 0 to change, Express The sample values ​​are averaged to obtain the filter value at the current moment; The data cleaning detects abnormal values ​​through Z-score, and the calculation formula of Z-score is as follows: ,in, Expressed as the Z-score of a data point, is represented as the value of the data point, is the mean of the data set, It is expressed as the standard deviation of the data set. Data points with a Z-score greater than 3 or less than -3 are considered outliers. Outliers are removed and the mean is calculated. Fill in outliers or missing values; The data conversion is processed by minimum-maximum normalization, mapping the data information to The minimum-maximum normalization formula is as follows: ,in, is represented as the value of the data point, Represents the normalized data value. Represented as the maximum value among the data points, Represented as the minimum value among the data points; It should be noted that the moving average filter is used to remove the noise in the data information to ensure the accuracy of the data information, and the Z-score is used to detect abnormal values ​​to facilitate the query and detection of erroneous data information, and the average value is used to supplement the erroneous information and missing values ​​to improve the integrity of the data information, and the minimum-maximum normalization process is used to map the data information to It can reduce the computing pressure of data information and improve computing efficiency.

[0025] In this embodiment, preferably, the two-dimensional X-ray image is smoothed by Gaussian filtering to remove noise in the image, and the calculation formula of Gaussian filtering is as follows: ,in, Represented as the processed output image at position The pixel value of Represented as the input image at position The pixel value of the pixel is used to calculate the center pixel of its neighborhood The new value of Expressed as standard deviation, it controls the width of the Gaussian function; Expressed as a normalization constant, ensuring that the integral of the Gaussian function is 1; It is expressed as the value of a Gaussian function, which determines the degree of influence of each pixel in the neighborhood on the central pixel; Represented as pixels To center pixel The square of the distance; It should be noted that the X-ray image is filtered by Gaussian filtering to improve the smoothness of the X-ray image and to highlight the features in the X-ray image.

[0026] In this embodiment, preferably, the feature point matching is calculated as follows: , in, and are the descriptor vectors of the two feature points, is a descriptor and The Euclidean distance between Measuring the similarity between two feature point descriptors in images at different angles; It should be noted that by performing feature matching on X-ray images from different viewing angles, it is convenient to fuse the X-ray images and effectively form a three-dimensional image, which facilitates comprehensive observation of concrete.

[0027] In this embodiment, preferably, the PID control module determines whether it is necessary to adjust and control the anti-osmosis instrument by comparing the collected data information with the set threshold information. The calculation formula of the PID control module is as follows: ,in, is the output of the controller, is the system error, is the proportional gain coefficient, is the integral gain coefficient, is the differential gain coefficient, is the integral part of the error, is the differential part of the error; in, The calculation of is as follows: ,in, is the set flow rate value, is the actual measured flow rate value, and ,in, is the set pressure value, is the actual measured pressure value, and ,in, is the set liquid level value, is the actual measured liquid level value; When the actually measured flow rate value, pressure value or liquid level value is higher or lower than the set threshold value, the PID control module controls the power equipment module through the driving module to perform automatic regulation and control; It should be noted that the collected data information is compared with the set threshold value to determine the water supply flow rate, pressure and liquid level of the system, so as to facilitate automatic control and adjustment through PID control.

[0028] In this embodiment, preferably, the power equipment module includes a pump body for supplying water or other permeating liquid, and includes a pipeline for transporting the water or other permeating liquid, and the pipeline includes the flow rate monitoring module and the pressure monitoring module for monitoring the flow rate and pressure of the water or other permeating liquid, and a solenoid valve for on-off control is provided on the pipeline, and the power equipment module also includes a booster pump for adjusting the pressure; It should be noted that the supply of water or other permeable liquid is controlled by the pump body, and the pressure intensity is adjusted by the booster pump, which is convenient for the concrete impermeability test, and the control and adjustment of a single channel is realized through multiple pipes and multiple solenoid valves to achieve synchronous detection of multiple concretes. A single control and adjustment can also be achieved to improve the control and adjustment accuracy during the test process.

[0029] In this embodiment, preferably, the regression algorithm predicts the value of subsequent data information, and the calculation process is as follows: The calculation formula for linear regression is: ;in, is the target variable, the value to be predicted; is the input feature; is the intercept term; is the regression coefficient; is the error term, which represents the difference between the predicted value and the true value; Calculate the regression coefficients by the least squares method of linear regression: ,in, Expressed as The true target value of samples, Expressed as The predicted value of the sample is calculated by the regression equation; Using matrix notation, the solution that minimizes the sum of squared errors is: ,in: is a A matrix containing all input features; yes The transposed matrix of is a , which represents the covariance matrix of the independent variables; is a The target variable vector; is the column vector of regression coefficients; Any new input data , use the following formula to predict its target value ; ; in, is the predicted target value, is the regression coefficient calculated from the training data; It should be noted that the use of regression algorithms to predict flow rate values, pressure values ​​and liquid level values ​​makes it easier to obtain possible anomalies in advance, facilitate timely control and adjustment, and maintain the accuracy of concrete testing.

[0030] In this embodiment, preferably, the control module is electrically connected to a voltage regulating module, the voltage regulating module is electrically connected to a power supply module, the power supply module adopts a city power grid, the control module is electrically connected to an auxiliary module, the auxiliary module includes a touch display for displaying data information and setting thresholds, includes an audible and visual alarm for alarming when the monitoring value exceeds the threshold, includes a data interface for connecting an external device, and includes a memory for storing data information; It should be noted that the power supply control of the system is achieved through the power supply module and the voltage regulating module to maintain the stable operation of the system, and the touch display in the auxiliary module is convenient for control and adjustment operations, as well as for displaying parameters, and the sound and light alarm is convenient for fault or abnormal warning to improve safety, the setting of the data interface is convenient for connecting external identification and exporting data information, and the memory is convenient for storing data information, subsequent tracking and query, and debugging of the equipment system.

[0031] In this embodiment, preferably, the voltage regulating module includes a step-down circuit for converting the high voltage of the city grid into a low voltage, a rectifier circuit for converting the AC voltage of the city grid into a DC voltage, a filter circuit for filtering the AC voltage in the DC voltage, and a voltage stabilizing circuit for stabilizing the voltage output; It should be noted that the setting of the voltage regulating module facilitates voltage regulation and control, so that high-voltage alternating current can be converted into low-voltage direct current suitable for the operation of the equipment system, ensuring the stable operation of the equipment and improving the operating safety of the equipment system.

[0032] The specific operation process of this application: When in use, water is pumped into the water tank through the pump body until it is full, and the bottom plate of the test mold is also filled with water, which is used to remove the air in the pipeline system. At this time, multiple battery valves leading to the test mold can be closed; the sealed concrete test mold is securely fixed on the instrument. The project requires the concrete to be pressurized at 0.8MPa, and the lower limit is set to 0.6MPa. After 8 hours of constant pressure, the lower limit automatically increases to 0.7MPa. After another 8 hours of constant pressure, the lower limit automatically increases to 0.8MPa. After 8 hours, when 2 of the end faces of the six test bodies show that the pressure water is penetrating, record the water pressure at this time as the test pressure value; And during the test process, the control module of the system obtains the water supply information through the flow rate monitoring module, pressure monitoring module and liquid level monitoring module in the data acquisition module, and processes the data information through the data preprocessing module, and then analyzes and processes it through the data analysis module, and finally calculates and compares the processed data information with the set threshold in the PID control module, and then the PID control module adjusts and controls the driving module and the power equipment module according to the calculation result, so as to adjust the flow rate, pressure and liquid level value of the water flow of the equipment at all times, and provide a stable environment for the concrete impermeability test; Finally, the penetration of concrete is monitored through the X-ray monitoring module, that is, the concrete is photographed through the X-ray monitoring module, and then the multi-view images are fused into a three-dimensional image through the three-dimensional building module, so as to facilitate the acquisition of the penetration path of the concrete and the calculation and measurement based on the penetration path; And the calculation of the permeate flow rate is as follows: ,in, Expressed as the permeate flow rate (m / s), Expressed as permeability coefficient (m / s), it is determined by the concrete properties and pore structure. Expressed as head difference (Pa), i.e. the applied water pressure, It is expressed as the length of the penetration path (m); The impermeability pressure is calculated by the following formula: ,in, Expressed as impermeability pressure (Pa), Expressed as the amount of water permeating per unit time (m³ / s), Expressed as the dynamic viscosity of water (Pa·s), Expressed as the length of the penetration path (m), Expressed as the cross-sectional area of ​​concrete (m²).

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-channel automatic water supply system for a concrete impermeability tester, characterized in that: A control module is included, the control module is electrically connected to a data preprocessing module, the data preprocessing module is electrically connected to a data acquisition module, a three-dimensional building module and a data analysis module, the data analysis module is electrically connected to a PID control module, the PID control module is electrically connected to a drive module, the drive module is electrically connected to a power equipment module, and the control module is electrically connected to the drive module; The data acquisition module is used to collect and obtain various parameter information of the concrete impermeability tester, including a flow rate monitoring module for monitoring the flow rate of the infiltrating liquid, a pressure monitoring module for monitoring the pressure of the infiltrating liquid, a liquid level monitoring module for monitoring the liquid level height of the infiltrating liquid, and an X-ray monitoring module for obtaining the penetration status of the concrete. The flow rate monitoring module and the pressure monitoring module are arranged on the water delivery pipeline, and the liquid level monitoring module and the X-ray monitoring module are arranged inside the impermeability tester; The three-dimensional construction module collects two-dimensional X-ray images at different angles in the concrete impermeability test through the X-ray monitoring module, and uses a filtering algorithm to remove noise from the two-dimensional X-ray images, and then uses a histogram equalization technology to enhance the contrast of the image and improve the visibility of the features, and then uses feature point matching or image registration algorithms to align the images at different angles to ensure that all images are in the same coordinate system, and finally uses a volume rendering algorithm to synthesize the two-dimensional images into three-dimensional volume data to realize the collection of the penetration path in the concrete; The data analysis module processes the flow rate data after filtering, cleaning and conversion by the data preprocessing module. , pressure intensity and liquid level Acquire and collect the flow rate data , pressure intensity and liquid level Convert into corresponding set data, namely velocity data set , pressure intensity set and the level set , and then the velocity data set , pressure intensity set and the level set Generate a visual line graph, and predict the value of subsequent data information based on the trend of the line graph and the regression algorithm; The PID control module receives the threshold information set by the control module and compares the set threshold information with the flow rate data. , pressure intensity and liquid level The comparison is used to determine whether the flow rate, pressure and liquid level exceed the set threshold value, and the PID control module directly controls and adjusts the driving module according to the calculated result, so that the driving module starts and controls the power equipment module to achieve control and adjustment of the flow rate, pressure and liquid level of the anti-osmosis instrument.

2. A multi-channel automatic water supply system for a concrete impermeability tester according to claim 1, characterized in that: The data preprocessing module is used to perform data filtering, data cleaning and data conversion on the data information collected by the data acquisition module; the data filtering is used to filter out clutter on the data information collected by the data acquisition module to improve the accuracy of the data information; the data cleaning is used to remove abnormal data from the data information collected by the data acquisition module and supplement missing values ​​in the data information; the data conversion is used to perform unified and standardized processing on the data information collected by the data acquisition module.

3. A multi-channel automatic water supply system for a concrete impermeability tester according to claim 2, characterized in that: The data filtering removes the noise in the data information through a moving average filter. The calculation formula of the moving average filter is as follows: ,in, represents the number of samples considered when computing the mean for a given window size, Represented as the output value after filtering, Represented as the current sample and its previous samples, from 0 to change, Express The sample values ​​are averaged to obtain the filter value at the current moment; The data cleaning detects abnormal values ​​through Z-score, and the calculation formula of Z-score is as follows: ,in, Expressed as the Z-score of a data point, is represented as the value of the data point, is the mean of the data set, It is expressed as the standard deviation of the data set. Data points with a Z-score greater than 3 or less than -3 are considered outliers. Outliers are removed and the mean is calculated. Fill in outliers or missing values; The data conversion is processed by minimum-maximum normalization, mapping the data information to The minimum-maximum normalization formula is as follows: ,in, is represented as the value of the data point, Represents the normalized data value. Represented as the maximum value among the data points, Expressed as the minimum value among the data points.

4. A multi-channel automatic water supply system for a concrete impermeability tester according to claim 1, characterized in that: The two-dimensional X-ray image is smoothed by Gaussian filtering to remove noise in the image, and the calculation formula of Gaussian filtering is as follows: ,in, Represented as the processed output image at position The pixel value of Represented as the input image at position The pixel value of the pixel is used to calculate the center pixel of its neighborhood The new value of Expressed as standard deviation, it controls the width of the Gaussian function; Expressed as a normalization constant, ensuring that the integral of the Gaussian function is 1; It is expressed as the value of a Gaussian function, which determines the degree of influence of each pixel in the neighborhood on the central pixel; Represented as pixels To center pixel The square of the distance.

5. The multi-channel automatic water supply system for concrete impermeability tester according to claim 1, characterized in that: The calculation of the feature point matching is as follows: ， in, and are the descriptor vectors of the two feature points, is a descriptor and The Euclidean distance between Measures the similarity between two feature point descriptors in images at different angles.

6. A multi-channel automatic water supply system for a concrete impermeability tester according to claim 1, characterized in that: The PID control module determines whether it is necessary to adjust and control the anti-osmosis instrument by comparing the collected data information with the set threshold information. The calculation formula of the PID control module is as follows: ,in, is the output of the controller, is the system error, is the proportional gain coefficient, is the integral gain coefficient, is the differential gain coefficient, is the integral part of the error, is the differential part of the error; in, The calculation of is as follows: ,in, is the set flow rate value, is the actual measured flow rate value, and ,in, is the set pressure value, is the actual measured pressure value, and ,in, is the set liquid level value, is the actual measured liquid level value; When the actually measured flow rate value, pressure value or liquid level value is higher or lower than the set threshold value, the PID control module controls the power equipment module through the driving module to perform automatic regulation and control.

7. The multi-channel automatic water supply system for concrete impermeability tester according to claim 1, characterized in that: The power equipment module includes a pump body for supplying water or other permeable liquids, and includes a pipeline for transporting water or other permeable liquids. The pipeline includes the flow rate monitoring module and the pressure monitoring module for monitoring the flow rate and pressure of the water or other permeable liquids, and an electromagnetic valve for on-off control is provided on the pipeline. The power equipment module also includes a booster pump for adjusting the pressure.

8. The multi-channel automatic water supply system for concrete impermeability tester according to claim 1, characterized in that: The regression algorithm predicts the value of subsequent data information, and the calculation process is as follows: The calculation formula for linear regression is: ;in, is the target variable, the value to be predicted; is the input feature; is the intercept term; is the regression coefficient; is the error term, which represents the difference between the predicted value and the true value; Calculate the regression coefficients by the least squares method of linear regression: ,in, Expressed as The true target value of samples, Expressed as The predicted value of the sample is calculated by the regression equation; Using matrix notation, the solution that minimizes the sum of squared errors is: ,in: is a A matrix containing all input features; yes The transposed matrix of is a , which represents the covariance matrix of the independent variables; is a The target variable vector; is the column vector of regression coefficients; Any new input data , use the following formula to predict its target value ; ； in, is the predicted target value, are the regression coefficients calculated from the training data.

9. The multi-channel automatic water supply system for concrete impermeability tester according to claim 1, characterized in that: The control module is electrically connected to a voltage regulating module, the voltage regulating module is electrically connected to a power supply module, the power supply module uses a city power grid, the control module is electrically connected to an auxiliary module, the auxiliary module includes a touch display for displaying data information and setting thresholds, an audible and visual alarm for alarming when the monitored value exceeds the threshold, a data interface for connecting an external device, and a memory for storing data information.

10. A multi-channel automatic water supply system for a concrete impermeability tester according to claim 9, characterized in that: The voltage regulating module includes a step-down circuit for converting the high voltage of the municipal power grid into a low voltage, a rectifier circuit for converting the AC voltage of the municipal power grid into a DC voltage, a filter circuit for filtering the AC voltage in the DC voltage, and a voltage stabilizing circuit for stabilizing the voltage output.

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