A quality control method and production equipment based on concrete components

Abstract

The present invention relates to the technical field of fluid ultrasonic analysis, and particularly relates to a quality control method and production equipment based on concrete components. The present invention screens suspected bubble signals for each vibration, obtains the vibration contribution degree according to the fluctuation degree of the amplitude difference between adjacent data points of each signal segment of the suspected bubble signal for each vibration, and then divides the suspected bubble signals for each vibration into signals to be corrected and true signals; according to the vibration contribution degree of each signal segment of the signal to be corrected corresponding to the signal segment in the true signal, adjusts the vibration contribution degree of the signal segment of the signal to be corrected to obtain the vibration influence degree of the suspected bubble signal; selects the bubble presence signals for each vibration according to the fluctuation of the vibration influence degree; until there are no bubble presence signals for each vibration, stops the next vibration of the concrete. The present invention can accurately and effectively judge whether the bubbles in the concrete are completely discharged, thereby improving the quality of the concrete structure.

Description

Technical Field

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

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

[0003] The air bubbles that appear during the concrete pouring process will affect the quality of concrete components. Existing methods judge whether there are air bubbles in the concrete by observing whether the surface of the concrete stops bubbling after vibration and the propagation speed of ultrasonic waves in the concrete; however, manual observation of the bubbling on the concrete surface is easily affected by environmental light and experience, and factors such as the uniformity of the concrete and the vibration state in addition to air bubbles will affect the propagation speed of ultrasonic waves, resulting in an inability to accurately judge whether the air bubbles in the concrete are completely discharged, and thus the quality effect of the concrete components is poor. Summary of the Invention

[0004] In order to solve the technical problem that it is impossible to accurately judge whether the air bubbles in the concrete are completely discharged, resulting in a poor quality effect of the concrete components, the purpose of the present invention is to provide a quality control method and production equipment for concrete components, and the specific technical solutions adopted are as follows:

[0005] In a first aspect, an embodiment of the present invention provides a quality control method for concrete components, and the method includes:

[0006] Obtain the ultrasonic signals at different positions in the container during each vibration when vibrating the concrete in the concrete pouring container in sequence;

[0007] According to the amplitude, fluctuation degree, and propagation speed of the ultrasonic signals during each vibration, screen the suspected air bubble signals during each vibration;

[0008] Divide the suspected air bubble signals during each vibration into signal segments, and obtain the vibration contribution degree of the corresponding signal segments according to the fluctuation degree of the amplitude difference between adjacent data points of each signal segment of the suspected air bubble signals during each vibration; based on the vibration contribution degree, divide the suspected air bubble signals during each vibration into signals to be corrected and true signals;

[0009] Adjust the vibration contribution degree of each signal segment of the signal to be corrected according to the vibration contribution degree of the corresponding signal segment of each signal segment of the signal to be corrected in the true signal, and obtain the vibration influence degree of the suspected bubble signal for each vibration;

[0010] Select the bubble presence signal for each vibration according to the fluctuation of the vibration influence degree; until there is no bubble presence signal for each vibration, stop the next vibration of the concrete in the container.

[0011] Further, the screening of the suspected bubble signal for each vibration includes:

[0012] Take the arithmetic mean difference of all peaks of the ultrasonic signal as the fluctuation index;

[0013] Calculate the mean value of all peaks of the ultrasonic signal and record it as the overall amplitude;

[0014] Obtain the propagation speed of the ultrasonic signal, and obtain the bubble presence index of the ultrasonic signal according to the fluctuation index, the overall amplitude and the propagation speed of the ultrasonic signal;

[0015] Select the ultrasonic signal with the bubble presence index greater than the preset presence threshold for each vibration as the suspected bubble signal for each vibration.

[0016] Further, the vibration contribution degree is equal to the normalized result of the variance of the amplitude difference between all adjacent two data points of each signal segment of each suspected bubble signal for each vibration.

[0017] Further, the division of the suspected bubble signal for each vibration into the signal to be corrected and the true signal includes:

[0018] For each suspected bubble signal for each vibration, record the signal segment with the vibration contribution degree of the suspected bubble signal greater than the preset vibration threshold as the segment to be corrected;

[0019] Judge whether the number of segments to be corrected of the suspected bubble signal is less than the preset quantity threshold. If so, record the suspected bubble signal as the true signal, otherwise record the suspected bubble signal as the signal to be corrected.

[0020] Further, the obtaining of the vibration influence degree of the suspected bubble signal for each vibration includes:

[0021] Calculate the sum value of the vibration contribution degrees of all signal segments of each true signal for each vibration respectively, and select the true signal corresponding to the smallest sum value as the correction reference signal for each vibration;

[0022] For each signal to be corrected for each vibration, the ratio of the vibration contribution degree of each to-be-corrected segment of the signal to be corrected to the vibration contribution degree of the corresponding signal segment in the correction reference signal is used as the adjustment coefficient for each to-be-corrected segment of the signal to be corrected;

[0023] Using the adjustment coefficient, perform weighted processing on the sum value of the mean value of the vibration contribution degree of the reference segment of each to-be-corrected segment of the signal to be corrected and the constant 1 to obtain the corrected vibration contribution degree of the corresponding to-be-corrected segment;

[0024] The sum value of the corrected vibration contribution degrees of all to-be-corrected segments and the vibration contribution degrees of all non-corrected segments of the signal to be corrected for each vibration is used as the vibration influence degree of the corresponding signal to be corrected; the sum value of the vibration contribution degrees of all signal segments of the true signal for each vibration is used as the vibration influence degree of the corresponding true signal.

[0025] Further, the selection of the bubble presence signal for each vibration includes:

[0026] Obtain the distance between the corresponding position of each suspected bubble signal for each vibration in the container and the vibration position of each vibration, and record it as the vibration distance of the corresponding suspected bubble signal;

[0027] Based on the vibration distance, arrange the vibration influence degrees of the suspected bubble signals for each vibration in order to obtain an influence sequence; calculate the ratio of the absolute value of the difference between each vibration influence degree in the influence sequence and the next adjacent vibration influence degree 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;

[0028] Calculate the mean value of the vibration influence change rates of all suspected bubble signals for each vibration, and perform normalization processing on the absolute value of the difference between the vibration influence change rate of each suspected bubble signal and the mean value to obtain the vibration influence outlier of the corresponding suspected bubble signal;

[0029] The suspected bubble signal with a vibration influence outlier greater than the preset outlier threshold for each vibration is used as the bubble presence signal.

[0030] Further, both the overall amplitude and the propagation speed are negatively correlated with the bubble presence index, and the fluctuation index is positively correlated with the bubble presence index.

[0031] Further, the reference segment is the non-to-be-corrected segment located on both sides of each to-be-corrected segment of the signal to be corrected and closest to each to-be-corrected segment.

[0032] Further, the preset quantity threshold is 2.

[0033] Second aspect, another embodiment of the present invention provides a quality control production device based on concrete components, and the device includes:

[0034] A data acquisition module, configured to obtain ultrasonic signals at different positions in the container during each vibration when vibrating the concrete in the concrete casting container in sequence.

[0035] A suspected bubble signal screening module, configured to screen suspected bubble signals during each vibration according to the amplitude, fluctuation degree and propagation speed of the ultrasonic signals during each vibration.

[0036] A signal category division module, configured to divide the suspected bubble signals during each vibration into signal segments, obtain the vibration contribution degree of the corresponding signal segment according to the fluctuation degree of the amplitude difference between adjacent data points of each signal segment of the suspected bubble signals during each vibration; based on the vibration contribution degree, divide the suspected bubble signals during each vibration into signals to be corrected and real signals.

[0037] A vibration influence analysis module, configured to adjust the vibration contribution degree of each signal segment of the signal to be corrected according to the vibration contribution degree of each signal segment of the signal to be corrected during each vibration in the corresponding signal segment in the real signal, and obtain the vibration influence degree of the suspected bubble signals during each vibration.

[0038] A quality control module, configured to select the bubble presence signals during each vibration according to the fluctuation condition of the vibration influence degree; until there are no bubble presence signals during each vibration, stop the next vibration of the concrete in the container.

[0039] The present invention has the following beneficial effects:

[0040] First aspect: Compared with judging whether the bubbles in the concrete are discharged by observing whether the surface of the vibrated concrete stops bubbling and the propagation speed of ultrasonic waves in the concrete, this solution can more accurately judge whether there are bubbles in the concrete by comprehensively analyzing the multi-dimensional characteristics of the amplitude, fluctuation degree and propagation speed of the ultrasonic signals to analyze the possibility of ultrasonic waves encountering bubbles.

[0041] Second aspect: Considering that the ultrasonic signals are collected when the vibrator is in the working state, the vibration of the vibrator itself will interfere with the propagation of ultrasonic waves, resulting in errors in the bubble detection of the concrete during each vibration through the ultrasonic signals. This solution reflects the influence degree of the vibration of the vibrator on the suspected bubble signals through the fluctuation degree of the amplitude difference between adjacent data points of the suspected bubble signals, and then divides the signals to be corrected and real signals; and uses the real signals to correct the waveform smoothness of the signals to be corrected that are greatly affected by the vibration of the vibrator, realizes the waveform smoothing operation of the signals to be corrected, obtains the vibration influence degree, and further improves the accuracy of judging whether there are bubbles in the concrete through the ultrasonic signals.

[0042] Third aspect: The vibration signal generated by the vibrator will have a gradually decreasing radiation effect on the ultrasonic signals of the surrounding ultrasonic sensors. However, the bubbles will interfere with the influence of the vibration signal on the ultrasonic signals, disrupting the stable decreasing law of the vibration influence degree with the increase of distance. Therefore, the signal indicating the presence of bubbles can be screened based on the fluctuation of the vibration influence degree.

[0043] Fourth aspect: By monitoring in real time whether there is a signal indicating the presence of bubbles during each vibration, the situation of bubble discharge in the concrete during each vibration can be monitored, providing timely feedback information, judging the effect of each vibration, ensuring the quality of the concrete, and improving the vibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0045] Figure 1 It is a flowchart of the steps of a quality control method for concrete components provided by an embodiment of the present invention;

[0046] Figure 2 It is a schematic diagram of a computer device of a quality control production device for concrete components provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] In order to further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following will, in combination with the accompanying drawings and preferred embodiments, detail the specific implementation manners, structures, features, and effects of a quality control method and production device for concrete components according to the present invention. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs.

[0049] The following will specifically describe the specific solutions of a quality control method and production device for concrete components provided by the present invention with reference to the accompanying drawings.

[0050] Embodiment 1

[0051] The present invention proposes a quality control method for concrete components. Please refer to Figure 1, which shows a step flowchart of a quality control method for concrete components provided by an embodiment of the present invention. The method includes:

[0052] Step S1: Obtain the ultrasonic signals at different positions in the container during each vibration when vibrating the concrete in the concrete casting container in sequence.

[0053] In order to discharge the air bubbles in the concrete and ensure the density of the concrete, appropriate vibration is required during the concrete pouring process. Insufficient vibration will cause the air bubbles in the concrete to not be completely discharged, and the air bubbles will remain in the concrete, affecting the quality of the concrete components. Install ultrasonic sensors at the bottom of the concrete casting container. The installation position of each ultrasonic sensor is a monitoring position. Use a vibrator to vibrate multiple times after the concrete pouring is completed. Use the ultrasonic sensors to collect the ultrasonic signals at all monitoring positions in the container during each vibration when vibrating the concrete in the concrete casting container in sequence. In order to analyze the air bubble discharge situation in the concrete after each vibration, take the last ultrasonic signal at each monitoring position during each vibration as the ultrasonic signal for each vibration.

[0054] In an implementation manner of the embodiment of the present invention, the ultrasonic sensors installed at the bottom of the concrete casting container are evenly distributed.

[0055] In an implementation manner of the embodiment of the present invention, the ultrasonic sensor collects 1 ultrasonic signal every 0.1 seconds.

[0056] Step S2: Screen the suspected bubble signals for each vibration according to the amplitude, fluctuation degree, and propagation speed of the ultrasonic signals for each vibration.

[0057] The air bubble interface in the concrete will scatter and reflect ultrasonic energy, resulting in a large attenuation of the ultrasonic amplitude; the air bubbles in the concrete are unevenly distributed and of different sizes, so that the degree of scattering and reflection of the ultrasonic waves during propagation is different, resulting in a large and uneven fluctuation degree of the ultrasonic signals affected by the air bubbles; when the ultrasonic waves encounter air bubbles, some sound waves 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 the concrete with air bubbles, the amplitude of the ultrasonic waves is small, the fluctuation degree is large, and the propagation speed is slow. Combining the three factors of the amplitude, fluctuation degree, and propagation speed of the ultrasonic signals, analyze the possibility of detecting the existence of air bubbles in the ultrasonic signals, thereby improving the accuracy of screening the suspected bubble signals for each vibration.

[0058] Step S3: Divide the suspected bubble signals for each vibration into signal segments, obtain the vibration contribution degree of the corresponding signal segment according to the fluctuation degree of the amplitude difference between adjacent data points of each signal segment of the suspected bubble signals for each vibration; based on the vibration contribution degree, divide the suspected bubble signals for each vibration into signals to be corrected and true signals.

[0059] Since the ultrasonic signal is collected when the vibrator is in the working state, the self-vibration of the vibrator will interfere with the propagation of ultrasonic waves. Therefore, the ultrasonic signal will be distorted or attenuated, resulting in errors in the detection of air bubbles in concrete by the ultrasonic signal during each vibration. Therefore, it is necessary to divide the suspected air bubble signals of each vibration into the signals to be corrected that are greatly affected by vibration and the real signals that are less affected by vibration. The vibration of the vibrator in the concrete will distort the waveform of the ultrasonic signal. The waveform may become irregular and lose its original smoothness. The influence of the vibrator on the ultrasonic signal is non-uniform. The ultrasonic signal collected by the ultrasonic sensor closer to the vibrator is more strongly interfered by vibration, and the distortion and attenuation of the ultrasonic signal are more serious. Furthermore, the fluctuation of the amplitude difference between adjacent data points of the suspected air bubble signal is more obvious. Therefore, the degree of fluctuation of the amplitude difference between adjacent data points of the suspected air bubble signal reflects the degree of influence of the vibration of the vibrator on the suspected air bubble signal, and then the signals to be corrected and the real signals are divided; in order to increase the accuracy of the analysis of the degree of influence of the vibrator vibration on the suspected air bubble signal, the suspected air bubble signal is divided into different signal segments for analysis.

[0060] In an implementation manner of the embodiment of the present invention, the durations of different signal segments divided from the suspected air bubble signal are equal, and the durations of the signal segments of different suspected air bubble signals are equal.

[0061] Step S4: According to the vibration contribution degree of each signal segment of the signal to be corrected corresponding to the signal segment in the real signal, adjust the vibration contribution degree of each signal segment of the signal to be corrected, and obtain the vibration influence degree of the suspected air bubble signal of each vibration.

[0062] The waveform of the ultrasonic signal that can be used to judge the air bubble discharge situation in the concrete needs to be very rigorous and cannot be affected by the vibration of the vibrator to make the smoothness of the waveform 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 referenceable for the detection of air bubbles in the concrete. Use the real signal to correct the waveform smoothness of the signal to be corrected that is greatly affected by the vibration of the vibrator, that is, adjust the vibration contribution degree of each signal segment of the signal to be corrected according to the vibration contribution degree of each signal segment of the signal to be corrected corresponding to the signal segment in the real signal, realize the waveform smoothing operation of the signal to be corrected, and then analyze the overall influence degree of the vibrator vibration on the suspected air bubble signal to obtain the vibration influence degree.

[0063] Step S5: According to the fluctuation situation of the vibration influence degree, select the air bubble presence signal of each vibration; until there is no air bubble presence signal in each vibration, stop the next vibration of the concrete in the container.

[0064] When the vibrator is inserted into the concrete for vibration, 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 on the ultrasonic signal collected by the sensor. Therefore, the vibration signal generated by the vibrator will have a gradually decreasing radiation on the ultrasonic signals of the surrounding ultrasonic sensors, and the degree of influence of the ultrasonic signal by vibration, that is, the vibration contribution degree, will also gradually decrease with the distance from the vibrator increasing. However, when there are bubbles that have not been 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 degree of the ultrasonic signal gradually decreases with the distance from the vibrator increasing, resulting in a large difference between the change rate of the vibration influence degree of the ultrasonic signal with bubbles interference and the corresponding change rate of the ultrasonic signal without bubbles interference with distance. Therefore, the bubble presence signal can be screened based on the fluctuation of the vibration influence degree.

[0065] If there is a bubble presence signal in the current vibration, it indicates that the concrete is not fully vibrated in the current vibration and there are still bubbles in the concrete that have not been discharged. Then, it is necessary to continue to vibrate the concrete for the next time. To improve the efficiency of bubble discharge in the concrete, the vibration position for the next vibration can be selected at 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.

[0066] Preferably, in some possible implementation manners of the embodiments of the present invention, the method for obtaining the suspected bubble signal includes: taking the arithmetic mean difference of all the peaks of the ultrasonic signal as the fluctuation index; calculating the mean value of all the peaks of the ultrasonic signal and recording it as the overall amplitude; obtaining the propagation speed of the ultrasonic signal, and obtaining the bubble presence index of the ultrasonic signal according to the fluctuation index, overall amplitude and propagation speed of the ultrasonic signal; selecting the ultrasonic signal whose bubble presence index in each vibration is greater than the preset presence threshold as the suspected bubble signal for each vibration. It should be noted that, in a specific implementation manner of the embodiments of the present invention, because in the concrete with bubbles, the amplitude of the ultrasonic wave is small, the degree of fluctuation is large and the propagation speed is slow, and the overall amplitude reflects the overall level of the amplitude of the ultrasonic signal, the fluctuation index presents the degree of fluctuation of the ultrasonic signal, and the greater the bubble presence index of the ultrasonic signal, the greater the possibility of detecting bubbles. Therefore, both the overall amplitude and the propagation speed are negatively correlated with the bubble presence index, and the fluctuation index is positively correlated with the bubble presence index. Therefore, the product of the reciprocal of the overall amplitude, the reciprocal of the propagation speed and the fluctuation index of the ultrasonic signal is normalized to obtain the bubble presence index. In other implementation manners of the embodiments of the present invention, the correlation between the overall amplitude, the propagation speed, the fluctuation index and the bubble presence index can also be constructed through other basic mathematical operations, which will not be limited and elaborated herein. In the embodiments of the present invention, the Norm function is used for normalization processing, and other normalization methods can also be selected, such as function transformation, maximum-minimum normalization and other normalization methods, which will not be limited herein.

[0067] It should be noted that, in this solution, the measurement is made from the bottom of the container, and the signal is reflected by the top and then returns. 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 transmitted pulse and the echo of the ultrasonic signal. In other possible implementation manners of the present invention, variance, quartile difference, etc. can also be used to reflect the fluctuation situation, and mode, median, etc. can be used to reflect the overall situation of the data.

[0068] In one implementation manner of the embodiments of the present invention, the preset presence threshold is set to 0.5.

[0069] Preferably, in some possible implementation manners of the embodiments of the present invention, the method for obtaining the vibration contribution degree includes: taking the normalization result of the variance of the amplitude differences between all adjacent two data points of each signal segment of each suspected bubble signal for each vibration as the vibration contribution degree of the corresponding signal segment. It should be noted that the stronger the interference of the vibrator vibration on the suspected bubble signal, the more serious the distortion and attenuation of the suspected bubble signal, and the more obvious the fluctuation of the amplitude differences between adjacent data points of the signal segment of the suspected bubble signal, indicating that the signal segment is more affected by the vibrator vibration and the vibration contribution degree is greater. In other possible implementation manners of the present invention, the standard deviation, quartile difference, etc. can also be used to reflect the fluctuation situation. In the embodiments of the present invention, the Norm function is used for normalization processing, and other normalization methods can also be selected, such as function transformation, maximum-minimum normalization and other normalization methods, which are not limited herein.

[0070] Preferably, in some possible implementation manners of the embodiments of the present invention, the signal division method includes: for each suspected bubble signal for each vibration, marking the signal segment with the vibration contribution degree of the suspected bubble signal greater than the preset vibration threshold as the segment to be corrected; judging whether the number of segments to be corrected of the suspected bubble signal is less than the preset quantity threshold. If so, marking the suspected bubble signal as a true signal; otherwise, marking the suspected bubble signal as a signal to be corrected. It should be noted that the greater the vibration contribution degree of the signal segment, the greater the influence of the vibrator vibration on the signal segment, and the signal segment needs to be corrected; if the number of segments to be corrected of the suspected bubble signal is more, it indicates that the accuracy of the signal in detecting the presence of bubbles is lower, and the signal needs to be corrected more.

[0071] In one implementation manner of the embodiments of the present invention, the preset vibration threshold is set to 0.3, and the preset quantity threshold is set to 2.

[0072] Preferably, in some possible implementation manners of the embodiments of the present invention, the method for obtaining the vibration influence degree includes: respectively calculating the sum value of the vibration contribution degrees of all signal segments of each true signal for each vibration, and selecting the true signal corresponding to the smallest sum value as the correction reference signal for each vibration; for each signal to be corrected for each vibration, taking the ratio of the vibration contribution degree of each segment to be corrected of the signal to be corrected to the vibration contribution degree of the corresponding signal segment in the correction reference signal as the adjustment coefficient of each segment to be corrected of the signal to be corrected; using the adjustment coefficient to perform weighted processing on the sum value of the mean value of the vibration contribution degree 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 degree of the corresponding segment to be corrected; taking the sum value of the corrected vibration contribution degrees of all segments to be corrected of the signal to be corrected and the vibration contribution degrees of all non-corrected segments for each vibration as the vibration influence degree of the corresponding signal to be corrected; taking the sum value of the vibration contribution degrees of all signal segments of the true signal for each vibration as the vibration influence degree of the corresponding true signal.

[0073] The smaller the vibration contribution degree 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 it is more referential for bubble monitoring. Therefore, the smallest sum value corresponding to the real signal, 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 degree of the segment to be corrected. The reference segment is the non-segment to be corrected 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 degree. Considering the degree of influence of the vibration of the vibrator on all signal segments of the signal to be corrected comprehensively, analyzing the overall influence degree of the vibration of the vibrator on the signal to be corrected, and obtaining the vibration influence degree.

[0074] It should be noted that the horizontal axis of the ultrasonic signal represents the propagation time of ultrasonic waves in concrete; the time periods of the corresponding signal segments in the signal to be corrected and the correction reference signal are the same; if the time difference between the transmitted pulse and the echo of the correction reference signal is smaller than that of the signal to be corrected, the signal segments in the signal to be corrected that exceed the time difference between the transmitted pulse and the echo of the correction reference signal are set to correspond to the last signal segment of the correction reference signal.

[0075] Preferably, in some possible implementation manners of the embodiment of the present invention, the method for selecting the bubble presence signal includes: obtaining the distance between the corresponding position of each suspected bubble signal in the container and the vibration position of each vibration for each vibration, and recording it as the vibration distance corresponding to the 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 in the influence sequence and the next adjacent vibration influence degree 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 corresponding to the suspected bubble signal of each vibration influence degree in the influence sequence; calculating the mean value 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 value to obtain the vibration influence outlier corresponding to the suspected bubble signal; and taking the suspected bubble signals with the vibration influence outliers greater than the preset outlier threshold for each vibration as the bubble presence signals.

[0076] It should be noted that since the degree of influence of the ultrasonic signal by vibration, i.e., the vibration contribution degree, also decreases gradually with the increasing distance from the vibrator, the vibration contribution degree, vibration distance, and vibration influence change rate can be analogized to length, time, and speed in sequence. To make the vibration influence change rate of the ultrasonic signal without bubble influence relatively close, when the difference between the vibration influence change rate of each suspected bubble signal and the average value of the vibration influence change rates of all suspected bubble signals during each vibration is larger, the vibration influence of the vibrator on the suspected bubble signal is more abnormal, and the larger the vibration influence abnormal value, which further increases the possibility of bubble interference in the suspected bubble signal. In the embodiments of the present invention, the Norm function is used for normalization processing.

[0077] In the embodiments of the present invention, the vibrator is usually vertically inserted into the concrete, and the corresponding position at the bottom of the concrete casting container where the vibrator is located 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.

[0078] In one implementation manner of the embodiments of the present invention, the preset abnormal threshold is set to 0.5.

[0079] In one implementation manner of the embodiments 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 as the vibration influence change rate of the suspected bubble signal corresponding to the penultimate vibration influence degree.

[0080] So far, the present invention is completed.

[0081] Embodiment 2

[0082] Figure 2 It is a schematic diagram of a computer device of a quality control production equipment for concrete components provided by an embodiment of the present invention. As Figure 2 shown, based on the same concept as in Embodiment 1 above, this embodiment also proposes a quality control production equipment for concrete components, and the equipment includes:

[0083] A data acquisition module, configured to obtain the ultrasonic signals at different positions in the container during each vibration when vibrating the concrete in the concrete casting container in sequence;

[0084] A suspected bubble signal screening module, configured to screen the suspected bubble signals during each vibration according to the amplitude, fluctuation degree, and propagation speed of the ultrasonic signals during each vibration;

[0085] The signal category division module is used to divide the suspected bubble signals of each vibration into signal segments, and obtain the vibration contribution degree of the corresponding signal segment according to the fluctuation degree of the amplitude difference between adjacent data points of each signal segment of the suspected bubble signals of each vibration; based on the vibration contribution degree, divide the suspected bubble signals of each vibration into signals to be corrected and true signals;

[0086] The vibration influence analysis module is used to adjust the vibration contribution degree of each signal segment of the signal to be corrected according to the vibration contribution degree of each signal segment of the signal to be corrected of each vibration in the corresponding signal segment of the true signal, and obtain the vibration influence degree of the suspected bubble signals of each vibration;

[0087] The quality control module is used to select the bubble presence signals of each vibration according to the fluctuation of the vibration influence degree; until there are no bubble presence signals in each vibration, stop the next vibration of the concrete in the container.

[0088] 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, so the same effect as the above-mentioned implementation method can be achieved.

[0089] Embodiment 3:

[0090] This embodiment also provides a computer-readable storage medium, in which computer program code is stored. When the computer program code runs on a computer, the computer is made to execute the above-mentioned related method steps to implement a quality control method based on concrete components provided in the above embodiment.

[0091] Embodiment 4

[0092] This embodiment also provides a computer program product. When the computer program product runs on a computer, the computer is made to execute the above-mentioned related steps to implement a quality control method based on concrete components provided in the above embodiment.

[0093] Among them, the computer-readable storage medium and computer program product provided in this embodiment are both 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 elaborated here.

[0094] 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 merely illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, 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 displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection of devices or units can be in electrical, mechanical or other forms.

[0095] It should be noted that the above sequence of embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. The processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0096] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the differences between each embodiment and other embodiments are emphasized.

Claims

1. A quality control method based on concrete components, characterized in that: The method includes: When concrete in the concrete pouring 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 to obtain ultrasonic signals at different positions in the container at each vibration when the concrete in the concrete pouring 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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