Quality control method based on concrete member and production equipment

Abstract

The invention relates to the technical field of fluid ultrasonic analysis, in particular to a quality control method based on a concrete member and production equipment. According to the method, suspected bubble signals of each vibration are screened, the vibration contribution degree is obtained according to the fluctuation degree of the amplitude difference of adjacent data points of each signal section of the suspected bubble signals of each vibration, and then the bubble signals of each vibration are divided into to-be-corrected signals and real signals; according to the vibration contribution degree of each signal section of the to-be-corrected signal in the corresponding signal section in the real signal, the vibration contribution degree of the signal section of the to-be-corrected signal is adjusted, and the vibration influence degree of the suspected bubble signal is obtained; selecting a bubble existence signal of each vibration according to the fluctuation condition of the vibration influence degree; and stopping vibrating the concrete for the next time until the bubble existence signal does not exist in each time of vibration. According to the invention, whether the bubbles in the concrete are completely discharged can be accurately and effectively judged, so that the quality of concrete construction is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid ultrasonic analysis, and in particular to a quality control method and production equipment based on concrete components. Background Art

[0002] As the most commonly used structural material in construction projects, the quality of concrete directly affects the safety, durability and service life of the project. With the increasing requirements of the construction industry for high-quality projects, the quality control of concrete components has become particularly important. During the pouring and curing of concrete, problems such as bubbles, cracks, and segregation may affect its density and strength, and thus affect the safety of the overall structure. Therefore, ensuring that concrete components meet design requirements and specifications through effective quality control measures is a key issue in construction projects, which is of great significance for improving the overall quality of concrete components and ensuring the stability and long-term use of the project.

[0003] Bubbles that appear during concrete pouring will affect the quality of concrete components. Existing methods judge whether there are bubbles in concrete by observing whether the bubbles on the concrete surface stop after vibration, the propagation speed of ultrasonic waves in concrete, etc.; however, manual observation of bubbles on the concrete surface is easily affected by ambient light and experience. In addition to bubbles, factors such as concrete uniformity and vibration status will affect the propagation speed of ultrasonic waves, resulting in an inability to accurately judge whether the bubbles in the concrete are completely discharged, which in turn makes the quality of concrete components poor. Summary of the invention

[0004] In order to solve the technical problem that it is impossible to accurately judge whether the bubbles in the concrete are completely discharged, resulting in poor quality of the concrete components, the purpose of the present invention is to provide a quality control method and production equipment based on concrete components. The technical solution adopted is as follows: In a first aspect, an embodiment of the present invention provides a quality control method based on a concrete component, the method comprising: When concrete in the concrete casting container is vibrated sequentially, ultrasonic signals at different positions in the container at each vibration are obtained; According to the amplitude, fluctuation degree and propagation speed of the ultrasonic signal of each vibration, the suspected bubble signal of each vibration is screened; The suspected bubble signal of each vibration is divided into signal segments, and the vibration contribution of the corresponding signal segment is obtained according to the fluctuation degree of the amplitude difference of adjacent data points of each signal segment of the suspected bubble signal of each vibration; based on the vibration contribution, the suspected bubble signal of each vibration is divided into a signal to be corrected and a real signal; According to the vibration contribution of each signal segment of the signal to be corrected to the corresponding signal segment in the real signal, the vibration contribution of each signal segment of the signal to be corrected is adjusted to obtain the vibration influence of the suspected bubble signal of each vibration; According to the fluctuation of the vibration influence degree, the bubble existence signal of each vibration is selected; until there is no bubble existence signal of each vibration, the next vibration of the concrete in the container is stopped.

[0005] Furthermore, the screening of suspected bubble signals of each vibration includes: The arithmetic mean difference of all peak values ​​of the ultrasound signal is used as the fluctuation index; Calculate the average of all peak values ​​of the ultrasonic signal and record it as the overall amplitude; Acquire the propagation speed of the ultrasonic signal, and acquire the bubble existence index of the ultrasonic signal according to the fluctuation index, the overall amplitude and the propagation speed of the ultrasonic signal; The ultrasonic signal whose bubble existence index for each vibration is greater than a preset existence threshold is selected as the suspected bubble signal for each vibration.

[0006] Furthermore, the vibration contribution is equal to the normalized result of the variance of the amplitude difference of all two adjacent data points in each signal segment of each suspected bubble signal of each vibration.

[0007] Furthermore, the method of dividing the suspected bubble signal of each vibration into a signal to be corrected and a real signal includes: For each suspected bubble signal of each vibration, a signal segment of the suspected bubble signal whose vibration contribution is greater than a preset vibration threshold is recorded as a segment to be corrected; It is determined whether the number of to-be-corrected segments of the suspected bubble signal is less than a preset threshold value. If so, the suspected bubble signal is recorded as a true signal; otherwise, the suspected bubble signal is recorded as a to-be-corrected signal.

[0008] Furthermore, the step of obtaining the vibration influence of the suspected bubble signal of each vibration includes: Calculate the sum of the vibration contribution of all signal segments of each real signal of each vibration respectively, select the real signal corresponding to the smallest sum and record it as the corrected reference signal of each vibration; For each signal to be corrected in each vibration, the ratio of the vibration contribution of each segment to be corrected of the signal to be corrected to the vibration contribution of its corresponding signal segment in the corrected reference signal is used as the adjustment coefficient of each segment to be corrected of the signal to be corrected; Using the adjustment coefficient, weighted processing is performed on the sum of the mean value of the vibration contribution of the reference segment of each to-be-corrected segment of the correction signal and a constant 1 to obtain a corrected vibration contribution of the corresponding to-be-corrected segment; The sum of the corrected vibration contribution of all segments of the signal to be corrected each time and the vibration contribution of all non-corrected segments is taken as the vibration influence of the corresponding signal to be corrected; the sum of the vibration contribution of all signal segments of the real signal of each vibration is taken as the vibration influence of the corresponding real signal.

[0009] Furthermore, the selecting of the bubble presence signal of each vibration comprises: Obtaining the distance between the corresponding position of each suspected bubble signal in the container and the vibration position of each vibration, and recording it as the vibration distance corresponding to the suspected bubble signal; The vibration influence degrees of the suspected bubble signal of each vibration are arranged in order based on the vibration distance to obtain an influence sequence; the absolute value of the difference between each vibration influence degree and the next adjacent vibration influence degree in the influence sequence and the absolute value of the difference between the vibration distances of the suspected bubble signal corresponding to the two vibration influence degrees are calculated as the vibration influence change rate of the suspected bubble signal corresponding to each vibration influence degree in the influence sequence; Calculate the mean of the vibration influence change rate of all suspected bubble signals of each vibration, normalize the absolute value of the difference between the vibration influence change rate of each suspected bubble signal and the mean, and obtain the vibration influence abnormal value corresponding to the suspected bubble signal; The suspected bubble signal in which the vibration impact abnormal value of each vibration is greater than the preset abnormal threshold is taken as a bubble existence signal.

[0010] Furthermore, the overall amplitude and the propagation speed are both negatively correlated with the bubble existence index, and the fluctuation index is positively correlated with the bubble existence index.

[0011] Furthermore, the reference segment is a non-to-be-corrected segment located on both sides of each to-be-corrected segment of the to-be-corrected signal and closest to each to-be-corrected segment.

[0012] Furthermore, the preset quantity threshold is 2.

[0013] In a second aspect, another embodiment of the present invention provides a quality control production device based on concrete components, the device comprising: A data acquisition module, used to obtain ultrasonic signals at different positions in the container at each vibration when the concrete in the concrete casting container is vibrated sequentially; A suspected bubble signal screening module is used to screen the suspected bubble signal of each vibration according to the amplitude, fluctuation degree and propagation speed of the ultrasonic signal of each vibration; A signal category classification module is used to divide the suspected bubble signal of each vibration into signal segments, and obtain the vibration contribution of the corresponding signal segment according to the fluctuation degree of the amplitude difference of adjacent data points of each signal segment of the suspected bubble signal of each vibration; based on the vibration contribution, the suspected bubble signal of each vibration is divided into a signal to be corrected and a real signal; A vibration influence analysis module is used to adjust the vibration contribution of each signal segment of the signal to be corrected according to the vibration contribution of each signal segment of the signal to be corrected in the real signal, and obtain the vibration influence of the suspected bubble signal of each vibration; The quality control module is used to select the bubble existence signal of each vibration according to the fluctuation of the vibration influence degree; until there is no bubble existence signal in each vibration, the next vibration of the concrete in the container is stopped.

[0014] The present invention has the following beneficial effects: First, compared with judging whether bubbles in concrete are discharged by observing whether bubbling stops on the concrete surface after vibration and the propagation speed of ultrasonic waves in concrete, this scheme analyzes the possibility of ultrasonic waves encountering bubbles by comprehensively analyzing the multi-dimensional characteristics of the ultrasonic signal's amplitude, fluctuation degree and propagation speed, and can more accurately judge whether there are bubbles in concrete.

[0015] The second aspect: Considering that the ultrasonic signal is collected by the vibrator when it is working, the vibration of the vibrator itself will interfere with the propagation of ultrasonic waves, resulting in errors in the bubble detection of concrete during each vibration through ultrasonic signals. This scheme reflects the influence of the vibration of the vibrator on the suspected bubble signal through the fluctuation degree of the amplitude difference of adjacent data points of the suspected bubble signal, and then divides the signal to be corrected from the real signal; and uses the real signal to correct the waveform smoothness of the signal to be corrected which is greatly affected by the vibration of the vibrator, realizes the waveform smoothing operation of the signal to be corrected, obtains the vibration influence degree, and further improves the accuracy of judging whether there are bubbles in the concrete through ultrasonic signals.

[0016] The third aspect: The vibration signal generated by the vibrator will radiate the ultrasonic signal of the surrounding ultrasonic sensors in a step-by-step manner, but the bubbles will interfere with the influence of the vibration signal on the ultrasonic signal, destroying the stable decreasing law of the vibration influence with increasing distance. Therefore, the bubble presence signal can be screened based on the fluctuation of the vibration influence.

[0017] Fourth aspect: by monitoring the presence of bubble signals during each vibration, the discharge of bubbles in the concrete can be monitored in real time, feedback information can be provided in time, the effect of each vibration can be judged, the quality of the concrete can be ensured, and the efficiency of vibration can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A flowchart of a quality control method based on concrete components provided by an embodiment of the present invention; Figure 2 A schematic diagram of a computer device for quality control production equipment based on concrete components provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of a quality control method and production equipment based on concrete components proposed by the present invention, its specific implementation method, structure, features and effects, in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0021] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0022] The following is a detailed description of a concrete component quality control method and a specific production equipment solution provided by the present invention in conjunction with the accompanying drawings.

[0023] Example 1 The present invention proposes a quality control method based on concrete components, please refer to Figure 1 , which shows a flow chart of steps of a quality control method based on concrete components provided by an embodiment of the present invention, the method comprising: Step S1: Acquire ultrasonic signals at different positions in the container during each vibration when the concrete in the concrete casting container is vibrated sequentially.

[0024] In order to expel bubbles in the concrete and ensure the density of the concrete, proper vibration is required during the concrete pouring process. Insufficient vibration will prevent the bubbles in the concrete from being completely expelled, and the bubbles will remain in the concrete, affecting the quality of the concrete components. An ultrasonic sensor is installed at the bottom of the concrete casting container. Each ultrasonic sensor installation position is a monitoring position. The vibrator is used to vibrate the concrete several times after the concrete pouring is completed. When the concrete in the concrete casting container is vibrated in sequence, the ultrasonic sensor is used to collect the ultrasonic signals of all monitoring positions in the container during each vibration process. In order to analyze the bubble discharge in the concrete after each vibration, the last ultrasonic signal of each monitoring position during each vibration process is used as the ultrasonic signal of each vibration.

[0025] In an implementation of the embodiment of the present invention, the ultrasonic sensors installed on the bottom of the concrete casting container are evenly distributed.

[0026] In an implementation of the embodiment of the present invention, the ultrasonic sensor collects an ultrasonic signal once every 0.1 seconds.

[0027] Step S2: Screening suspected bubble signals of each vibration according to the amplitude, fluctuation degree and propagation speed of the ultrasonic signal of each vibration.

[0028] The bubble interface in concrete will scatter and reflect ultrasonic energy, resulting in a significant attenuation of the ultrasonic amplitude; the bubbles in concrete are unevenly distributed and of varying sizes, causing the ultrasonic waves to be scattered and reflected to different degrees during propagation, resulting in a large degree of fluctuation and uneven distribution of the ultrasonic signal affected by the bubbles; when the ultrasonic wave encounters bubbles, part of the sound wave will change the propagation path due to diffraction or reflection, resulting in an increase in the total propagation time and a decrease in the propagation speed. Therefore, in concrete with bubbles, the ultrasonic wave has a smaller amplitude, a larger degree of fluctuation, and a slower propagation speed. Combining the three factors of the ultrasonic signal amplitude, degree of fluctuation, and propagation speed, the possibility of ultrasonic signals detecting the presence of bubbles is analyzed, thereby improving the accuracy of screening suspected bubble signals for each vibration.

[0029] Step S3: Divide the suspected bubble signal of each vibration into signal segments, and obtain the vibration contribution of the corresponding signal segment according to the fluctuation degree of the amplitude difference of adjacent data points of each signal segment of the suspected bubble signal of each vibration; based on the vibration contribution, divide the suspected bubble signal of each vibration into a signal to be corrected and a real signal.

[0030] Because the ultrasonic signal is collected by the vibrator in the working state, the vibration of the vibrator itself will interfere with the propagation of ultrasonic waves, so the ultrasonic signal will be distorted or attenuated, resulting in errors in the bubble detection of concrete in each vibration through ultrasonic signals. Therefore, it is necessary to divide the suspected bubble signal of each vibration into a signal to be corrected that is greatly affected by vibration and a real signal that is less affected by vibration. The vibration of the vibrator in concrete will distort the waveform of the ultrasonic signal, and the waveform may become irregular and lose its original smoothness. The influence of the vibrator on the ultrasonic signal is non-uniform. The closer the ultrasonic sensor is to the vibrator, the stronger the vibration interference of the ultrasonic signal collected by the ultrasonic sensor is, and the more serious the distortion and attenuation of the ultrasonic signal is, which makes the fluctuation of the amplitude difference of adjacent data points of the suspected bubble signal more obvious. Therefore, the fluctuation degree of the amplitude difference of adjacent data points of the suspected bubble signal reflects the influence of the vibration of the vibrator on the suspected bubble signal, and then divides the signal to be corrected and the real signal; in order to increase the accuracy of the analysis of the influence of the vibration of the vibrator on the suspected bubble signal, the suspected bubble signal is divided into different signal segments for analysis.

[0031] In an implementation of the embodiment of the present invention, the durations of different signal segments into which the suspected bubble signal is divided are equal, and the durations of signal segments of different suspected bubble signals are equal.

[0032] Step S4: According to the vibration contribution of each signal segment of the signal to be corrected in the real signal, the vibration contribution of each signal segment of the signal to be corrected is adjusted to obtain the vibration influence of the suspected bubble signal of each vibration.

[0033] The waveform of the ultrasonic signal that can be used to judge the discharge of bubbles in concrete needs to be very rigorous and cannot be affected by the vibration of the vibrator, causing the waveform smoothness to be abnormal; the waveform of the real signal that is less affected by the vibration of the vibrator is relatively smooth and real, and is more relevant for bubble detection in concrete. The real signal is used to correct the waveform smoothness of the signal to be corrected that is greatly affected by the vibration of the vibrator, that is, the vibration contribution of each signal segment of the signal to be corrected is adjusted by the vibration contribution of the corresponding signal segment of each signal segment of the signal to be corrected in the real signal, so as to achieve waveform smoothing operation on the signal to be corrected, and then analyze the overall influence of the vibrator vibration on the suspected bubble signal to obtain the vibration influence.

[0034] Step S5: selecting the bubble presence signal of each vibration according to the fluctuation of the vibration influence degree; and stopping the next vibration of the concrete in the container until there is no bubble presence signal of each vibration.

[0035] When the vibrator is inserted into the concrete and vibrates, it will have a certain radiation effect on the surrounding ultrasonic sensors. Generally, the closer the ultrasonic sensor is to the vibrator, the stronger the vibration interference is to the ultrasonic signal collected by the ultrasonic sensor. Therefore, the vibration signal generated by the vibrator will have a gradually decreasing radiation on the ultrasonic signal of the surrounding ultrasonic sensors. The degree to which the ultrasonic signal is affected by the vibration, that is, the vibration contribution, will also decrease step by step with the distance from the vibrator. However, when there are bubbles that are not discharged in time at the position of the ultrasonic sensor, the bubbles will interfere with the influence of the vibration signal on the ultrasonic signal, destroying the law that the vibration influence of the ultrasonic signal decreases step by step with the distance from the vibrator, resulting in a large difference between the change rate of the vibration influence of the ultrasonic signal with bubble interference and the corresponding change rate of the ultrasonic signal without bubble interference. Therefore, the bubble presence signal can be screened based on the fluctuation of the vibration influence.

[0036] If there is a bubble presence signal in the current vibration, it means that the concrete has not been fully vibrated in the current vibration and there are still bubbles in the concrete that have not been discharged. In this case, the concrete needs to be vibrated for the next time. In order to improve the efficiency of bubble discharge in the concrete, the vibration position of the next vibration can be selected from the monitoring position corresponding to the bubble presence signal of the current vibration; until there is no bubble presence signal in a certain vibration, the bubbles in the concrete are completely discharged and the vibration of the concrete can be stopped.

[0037] Preferably, in some possible implementations of the embodiments of the present invention, the method for obtaining the suspected bubble signal includes: taking the arithmetic mean difference of all peak values ​​of the ultrasonic signal as the fluctuation index; calculating the mean value of all peak values ​​of the ultrasonic signal as the overall amplitude; obtaining the propagation speed of the ultrasonic signal, and obtaining the bubble existence index of the ultrasonic signal according to the fluctuation index, the overall amplitude and the propagation speed of the ultrasonic signal; selecting the ultrasonic signal whose bubble existence index of each vibration is greater than the preset existence threshold as the suspected bubble signal of each vibration. It should be noted that in a specific implementation of the embodiment of the present invention, because in concrete with bubbles, the amplitude of the ultrasonic wave is small, the fluctuation degree is large and the propagation speed is slow, and the overall amplitude reflects the overall level of the amplitude of the ultrasonic signal, and the fluctuation index shows the fluctuation degree of the ultrasonic signal, the ultrasonic signal with a larger bubble existence index has a greater possibility of detecting bubbles, so the overall amplitude and the propagation speed are negatively correlated with the bubble existence index, and the fluctuation index and the bubble existence index are positively correlated, so the reciprocal of the overall amplitude of the ultrasonic signal, the reciprocal of the propagation speed and the product of the fluctuation index are normalized to obtain the bubble existence index. In other implementations of the embodiments of the present invention, other basic mathematical operations may be used to construct the correlation between the overall amplitude, propagation speed, fluctuation index, and bubble existence index, which are not limited or elaborated here. In the embodiments of the present invention, the Norm function is used for normalization, and other normalization methods may also be selected, such as function conversion, maximum and minimum normalization, etc., which are not limited here.

[0038] It should be noted that this solution measures from the bottom of the container, and the signal is reflected from the top and then returned. The propagation speed of the ultrasonic signal is equal to the ratio of twice the height of the concrete casting container to the time difference between the ultrasonic signal's transmitted pulse and the echo. In other possible implementations of the present invention, variance, quartile range, etc. can also be used to reflect fluctuations, and mode and median can be used to reflect the overall situation of the data.

[0039] In an implementation manner of the embodiment of the present invention, the preset existence threshold is set to 0.5.

[0040] Preferably, in some possible implementations of the embodiments of the present invention, the method for obtaining the vibration contribution includes: taking the normalized result of the variance of the amplitude difference of all two adjacent data points of each signal segment of each suspected bubble signal of each vibration as the vibration contribution of the corresponding signal segment. It should be noted that the stronger the suspected bubble signal is disturbed by the vibration of the vibrator, the more serious the distortion and attenuation are, so that the more obvious the fluctuation of the amplitude difference of adjacent data points of the signal segment of the suspected bubble signal is, the greater the signal segment is affected by the vibration of the vibrator, and the greater the vibration contribution is. In other possible implementations of the present invention, the standard deviation, interquartile range, etc. can also be used to reflect the fluctuation. In the embodiment of the present invention, the Norm function is used for normalization, and other normalization methods can also be selected, such as function transformation, maximum and minimum normalization, etc., which are not limited here.

[0041] Preferably, in some possible implementations of the embodiments of the present invention, the signal division method includes: for each suspected bubble signal of each vibration, the signal segment whose vibration contribution of the suspected bubble signal is greater than a preset vibration threshold is recorded as a segment to be corrected; it is determined whether the number of segments to be corrected of the suspected bubble signal is less than a preset number threshold, if so, the suspected bubble signal is recorded as a real signal, otherwise, the suspected bubble signal is recorded as a signal to be corrected. It should be noted that the greater the vibration contribution of a signal segment, the greater the impact of the vibration of the vibrator, and the signal segment needs to be corrected; if the number of segments to be corrected of a suspected bubble signal is greater, it means that the accuracy of the signal in detecting the presence of bubbles is lower, and the signal needs to be corrected more.

[0042] In an implementation of the embodiment of the present invention, the preset vibration threshold is set to 0.3, and the preset quantity threshold is set to 2.

[0043] Preferably, in some possible implementation modes of the embodiments of the present invention, the method for obtaining the vibration influence includes: respectively calculating the sum of the vibration contributions of all signal segments of each real signal of each vibration, selecting the real signal corresponding to the minimum sum and recording it as the corrected reference signal of each vibration; for each signal to be corrected of each vibration, taking the ratio of the vibration contribution of each segment to be corrected of the signal to be corrected to the vibration contribution of its corresponding signal segment in the corrected reference signal as the adjustment coefficient of each segment to be corrected of the signal to be corrected; using the adjustment coefficient, weighting the sum of the mean value of the vibration contribution of the reference segment of each segment to be corrected of the signal to be corrected and the constant 1 to obtain the corrected vibration contribution of the corresponding segment to be corrected; taking the sum of the corrected vibration contribution of all segments to be corrected of the signal to be corrected of each vibration and the vibration contribution of all non-corrected segments as the vibration influence of the corresponding signal to be corrected; taking the sum of the vibration contribution of all signal segments of the real signal of each vibration as the vibration influence of the corresponding real signal.

[0044] The smaller the vibration contribution of the signal segment of the ultrasonic signal, the less the ultrasonic signal is affected by the vibration of the vibrator, the smoother and more real the waveform of the ultrasonic signal is, and the more reference it has for bubble monitoring. Therefore, the real signal corresponding to the smallest sum value, that is, the waveform real signal, is selected as the correction reference signal. In this embodiment, the interpolation method is used to correct the vibration contribution of the segment to be corrected. The reference segment is the non-segment to be corrected located on both sides of each segment to be corrected of the signal to be corrected and closest to each segment to be corrected. Each segment to be corrected has at least one reference segment. At the same time, considering the waveform characteristics of the segment to be corrected itself, the adjustment coefficient is used to further adjust the interpolation of the interpolation method in the segment to be corrected to obtain the corrected vibration contribution. Comprehensively consider the degree to which all signal segments of the signal to be corrected are affected by the vibration of the vibrator, analyze the overall influence of the vibration of the vibrator on the signal to be corrected, and obtain the vibration influence.

[0045] It should be noted that the horizontal axis of the ultrasonic signal represents the propagation time of the ultrasonic wave in concrete; the corresponding signal segments in the signal to be corrected and the corrected reference signal are in the same time period; if the time difference between the transmitted pulse and the echo of the corrected reference signal is smaller than that of the signal to be corrected, the signal segment in the signal to be corrected that exceeds the time difference between the transmitted pulse and the echo of the corrected reference signal is set to correspond to the last signal segment of the corrected reference signal.

[0046] Preferably, in some possible implementation modes of the embodiments of the present invention, the method for selecting the bubble existence signal includes: obtaining the distance between the corresponding position of each suspected bubble signal in each vibration in the container and the vibration position of each vibration, recorded as the vibration distance of the corresponding suspected bubble signal; arranging the vibration influence degrees of the suspected bubble signals of each vibration in order based on the vibration distance to obtain an influence sequence; calculating the ratio of the absolute value of the difference between each vibration influence degree and the next adjacent vibration influence degree in the influence sequence and the absolute value of the difference between the vibration distances of the suspected bubble signals corresponding to the two vibration influence degrees, as the vibration influence change rate of the suspected bubble signal corresponding to each vibration influence degree in the influence sequence; calculating the mean of the vibration influence change rates of all suspected bubble signals of each vibration, normalizing the absolute value of the difference between the vibration influence change rate of each suspected bubble signal and the mean, and obtaining the vibration influence anomaly value of the corresponding suspected bubble signal; taking the suspected bubble signal whose vibration influence anomaly value of each vibration is greater than a preset anomaly threshold as a bubble existence signal.

[0047] It should be noted that, since the degree to which the ultrasonic signal is affected by vibration, i.e., the vibration contribution, will gradually decrease as the distance from the vibrator increases, the vibration contribution, vibration distance, and vibration influence change rate can be respectively analogous to length, time, and speed, so that the vibration influence change rate of the ultrasonic signal without bubble influence is relatively close. Then, when the difference between the vibration influence change rate of each suspected bubble signal and the average of the vibration influence change rates of all suspected bubble signals of each vibration is greater, the more abnormal the vibration influence of the vibrator on the suspected bubble signal is, the greater the vibration influence abnormality value is, and thus the greater the possibility that the suspected bubble signal has bubble interference. In the embodiment of the present invention, the Norm function is used for normalization.

[0048] In an embodiment of the present invention, the vibrator is usually inserted vertically into the concrete, and the corresponding position of the vibrator at the bottom of the concrete casting container during each vibration is recorded as the vibration position of each vibration; the corresponding position of the suspected bubble signal is the monitoring position of the ultrasonic sensor that collects the signal.

[0049] In an implementation of the embodiment of the present invention, the preset abnormal threshold is set to 0.5.

[0050] In an implementation of the embodiment of the present invention, the vibration influence change rate of the suspected bubble signal corresponding to the last vibration influence degree in the influence sequence is set to the vibration influence change rate of the suspected bubble signal corresponding to the second last vibration influence degree.

[0051] So far, the present invention is completed.

[0052] Example 2 Figure 2 A computer device schematic diagram of a quality control production device based on concrete components provided by an embodiment of the present invention. Figure 2 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes a quality control production equipment based on concrete components, the equipment comprising: A data acquisition module is used to obtain ultrasonic signals at different positions in the container at each vibration when the concrete in the concrete casting container is vibrated sequentially; A suspected bubble signal screening module is used to screen the suspected bubble signal of each vibration according to the amplitude, fluctuation degree and propagation speed of the ultrasonic signal of each vibration; A signal category classification module is used to divide the suspected bubble signal of each vibration into signal segments, and obtain the vibration contribution of the corresponding signal segment according to the fluctuation degree of the amplitude difference of adjacent data points of each signal segment of the suspected bubble signal of each vibration; based on the vibration contribution, the suspected bubble signal of each vibration is divided into a signal to be corrected and a real signal; A vibration influence analysis module is used to adjust the vibration contribution of each signal segment of the signal to be corrected according to the vibration contribution of each signal segment of the signal to be corrected in the real signal, and obtain the vibration influence of the suspected bubble signal of each vibration; The quality control module is used to select the bubble existence signal of each vibration according to the fluctuation of the vibration influence degree; until there is no bubble existence signal in each vibration, the next vibration of the concrete in the container is stopped.

[0053] It should be understood that the device provided in this embodiment is used to execute the above-mentioned quality control method based on concrete components, and thus can achieve the same effect as the above-mentioned implementation method.

[0054] Embodiment 3: This embodiment also provides a computer-readable storage medium, in which a computer program code is stored. When the computer program code is executed on a computer, the computer executes the above-mentioned related method steps to implement a quality control method based on concrete components provided in the above embodiment.

[0055] Example 4 This embodiment also provides a computer program product. When the computer program product is run on a computer, the computer is enabled to execute the above-mentioned related steps to implement a quality control method based on concrete components provided in the above embodiment.

[0056] Among them, the computer-readable storage medium and computer program product provided in this embodiment are used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0057] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0058] It should be noted that the sequence of the above embodiments of the present invention is only for description and does not represent the advantages and disadvantages of the embodiments. The processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0059] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

Claims

1. A quality control method based on concrete components, characterized in that: The method includes: When concrete in the concrete casting container is vibrated sequentially, ultrasonic signals at different positions in the container at each vibration are obtained; According to the amplitude, fluctuation degree and propagation speed of the ultrasonic signal of each vibration, the suspected bubble signal of each vibration is screened; The suspected bubble signal of each vibration is divided into signal segments, and the vibration contribution of the corresponding signal segment is obtained according to the fluctuation degree of the amplitude difference of adjacent data points of each signal segment of the suspected bubble signal of each vibration; based on the vibration contribution, the suspected bubble signal of each vibration is divided into a signal to be corrected and a real signal; According to the vibration contribution of each signal segment of the signal to be corrected to the corresponding signal segment in the real signal, the vibration contribution of each signal segment of the signal to be corrected is adjusted to obtain the vibration influence of the suspected bubble signal of each vibration; According to the fluctuation of the vibration influence degree, the bubble existence signal of each vibration is selected; until there is no bubble existence signal of each vibration, the next vibration of the concrete in the container is stopped.

2. A quality control method based on concrete components according to claim 1, characterized in that: The screening of suspected bubble signals of each vibration includes: The arithmetic mean difference of all peak values ​​of the ultrasound signal is used as the fluctuation index; Calculate the average of all peak values ​​of the ultrasonic signal and record it as the overall amplitude; Acquire the propagation speed of the ultrasonic signal, and acquire the bubble existence index of the ultrasonic signal according to the fluctuation index, the overall amplitude and the propagation speed of the ultrasonic signal; The ultrasonic signal whose bubble existence index for each vibration is greater than a preset existence threshold is selected as the suspected bubble signal for each vibration.

3. A quality control method based on concrete components according to claim 1, characterized in that: The vibration contribution is equal to the normalized result of the variance of the amplitude difference of all two adjacent data points of each signal segment of each suspected bubble signal of each vibration.

4. A quality control method based on concrete components according to claim 1, characterized in that: The method of dividing the suspected bubble signal of each vibration into a signal to be corrected and a real signal includes: For each suspected bubble signal of each vibration, a signal segment of the suspected bubble signal whose vibration contribution is greater than a preset vibration threshold is recorded as a segment to be corrected; It is determined whether the number of to-be-corrected segments of the suspected bubble signal is less than a preset threshold value. If so, the suspected bubble signal is recorded as a true signal; otherwise, the suspected bubble signal is recorded as a to-be-corrected signal.

5. A quality control method based on concrete components according to claim 4, characterized in that: The step of obtaining the vibration influence of the suspected bubble signal of each vibration comprises: Calculate the sum of the vibration contribution of all signal segments of each real signal of each vibration respectively, select the real signal corresponding to the smallest sum and record it as the corrected reference signal of each vibration; For each signal to be corrected in each vibration, the ratio of the vibration contribution of each segment to be corrected of the signal to be corrected to the vibration contribution of its corresponding signal segment in the corrected reference signal is used as the adjustment coefficient of each segment to be corrected of the signal to be corrected; Using the adjustment coefficient, weighted processing is performed on the sum of the mean value of the vibration contribution of the reference segment of each to-be-corrected segment of the correction signal and a constant 1 to obtain a corrected vibration contribution of the corresponding to-be-corrected segment; The sum of the corrected vibration contribution of all segments of the signal to be corrected each time and the vibration contribution of all non-corrected segments is taken as the vibration influence of the corresponding signal to be corrected; the sum of the vibration contribution of all signal segments of the real signal of each vibration is taken as the vibration influence of the corresponding real signal.

6. A quality control method based on concrete components according to claim 1, characterized in that: The step of selecting the bubble presence signal of each vibration comprises: Obtaining the distance between the corresponding position of each suspected bubble signal in the container and the vibration position of each vibration, and recording it as the vibration distance corresponding to the suspected bubble signal; The vibration influence degrees of the suspected bubble signal of each vibration are arranged in order based on the vibration distance to obtain an influence sequence; the absolute value of the difference between each vibration influence degree and the next adjacent vibration influence degree in the influence sequence and the absolute value of the difference between the vibration distances of the suspected bubble signal corresponding to the two vibration influence degrees are calculated as the vibration influence change rate of the suspected bubble signal corresponding to each vibration influence degree in the influence sequence; Calculate the mean of the vibration influence change rate of all suspected bubble signals of each vibration, normalize the absolute value of the difference between the vibration influence change rate of each suspected bubble signal and the mean, and obtain the vibration influence abnormal value corresponding to the suspected bubble signal; The suspected bubble signal in which the vibration impact abnormal value of each vibration is greater than the preset abnormal threshold is taken as a bubble existence signal.

7. A quality control method based on concrete components according to claim 2, characterized in that: The overall amplitude and the propagation speed are both negatively correlated with the bubble existence index, and the fluctuation index is positively correlated with the bubble existence index.

8. The quality control method based on concrete components according to claim 5, characterized in that: The reference segment is a non-to-be-corrected segment located on both sides of each to-be-corrected segment of the to-be-corrected signal and closest to each to-be-corrected segment.

9. The quality control method based on concrete components according to claim 4, characterized in that: The preset quantity threshold is 2.

10. A quality control production equipment based on concrete components, characterized in that: The device comprises: A data acquisition module, used for acquiring ultrasonic signals at different positions in the container at each vibration when the concrete in the concrete casting container is vibrated sequentially; A suspected bubble signal screening module is used to screen the suspected bubble signal of each vibration according to the amplitude, fluctuation degree and propagation speed of the ultrasonic signal of each vibration; A signal category classification module is used to divide the suspected bubble signal of each vibration into signal segments, and obtain the vibration contribution of the corresponding signal segment according to the fluctuation degree of the amplitude difference of adjacent data points of each signal segment of the suspected bubble signal of each vibration; based on the vibration contribution, the suspected bubble signal of each vibration is divided into a signal to be corrected and a real signal; A vibration influence analysis module is used to adjust the vibration contribution of each signal segment of the signal to be corrected according to the vibration contribution of each signal segment of the signal to be corrected in the real signal, and obtain the vibration influence of the suspected bubble signal of each vibration; The quality control module is used to select the bubble existence signal of each vibration according to the fluctuation of the vibration influence degree; until there is no bubble existence signal in each vibration, the next vibration of the concrete in the container is stopped.

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