Hydraulic fracturing micro-seismic signal synchronous acquisition method and device
By acquiring and processing the initial and reference microseismic signals in the mine, a more refined target microseismic signals are generated, which solves the problems of microseismic signals positioning accuracy and noise interference in the mine, and improves the performance and reliability of the monitoring system.
Patent Information
- Application Number
- CN202411615365.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-02-21
AI Technical Summary
Since the detector cannot accurately time the detector in the mine, the time error of the microseismic signal is large, which affects the accuracy and reliability of microseismic event positioning. At the same time, the noise interference is serious, affecting the microseismic monitoring effect.
By obtaining multiple initial digital signals and reference micro-seismic signals in the mine, the initial data set is generated based on the preset time period and initial time information, and update it to generate the target data set. The time granularity of the target data set is smaller. Generate a target microseismic signal indicating a hydraulic fracturing event in the mine.
It improves the accuracy and timeliness of microseismic signal monitoring, enhances the reliability of microseismic signal analysis, thereby improving the overall performance of the mine safety monitoring system and providing strong guarantees for mine safety production.
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Figure CN119493157A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of microseismic monitoring, and in particular to a method, device, electronic equipment and storage medium for synchronous acquisition of hydraulic fracturing microseismic signals. Background Art
[0002] Microseismic monitoring is a geophysical real-time monitoring technology that uses microseismic signals generated during the load-breaking process of rock masses to study and evaluate rock stability. It can provide early warning of rock dynamic disasters and ensure the safety of the working environment for underground personnel. It is one of the important means of studying the monitoring and early warning mechanism of rock dynamic disasters.
[0003] In the related technology, because the average mining depth of the mine is more than 500 meters, the geophones arranged underground cannot perform accurate timing, resulting in large time errors in the multi-channel microseismic signals monitored by multiple geophones, which seriously affects the accuracy and reliability of microseismic event positioning. In addition, due to the complex mining environment of the mine, the types of noise are diverse and the duration is long. The arranged geophones can not only receive microseismic signals of rock mass load fracture, but also receive interference noises generated by rock drilling, blasting, tunneling, equipment operation, groundwater flow, etc., thus affecting the effect of microseismic monitoring. Summary of the invention
[0004] The present disclosure proposes a method, device, electronic device, storage medium and computer program product for synchronous acquisition of hydraulic fracturing microseismic signals, aiming to solve the technical problems in the related technologies at least to a certain extent.
[0005] The first aspect of the present disclosure provides a method for synchronously collecting microseismic signals for hydraulic fracturing, the method comprising: acquiring multiple initial digital signals and reference microseismic signals in a mine, wherein each initial digital signal has corresponding initial time information, wherein the reference microseismic signal is collected when a hydraulic fracturing event occurs, and the collection time of the reference microseismic signal is earlier than the collection time of the initial digital signal; generating multiple initial data sets according to a preset time period, the initial time information and multiple initial digital signals; updating each initial data set to obtain a target data set, wherein the target signal in the target data set corresponds to the target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information; generating a target microseismic signal according to the target data set, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine.
[0006] The second aspect of the present disclosure provides a synchronous acquisition device for microseismic signals of hydraulic fracturing, the device comprising: an acquisition module, used to acquire multiple initial digital signals and reference microseismic signals in a mine, wherein each initial digital signal has corresponding initial time information, wherein the reference microseismic signal is acquired when a hydraulic fracturing event occurs, and the acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal; a first generation module, used to generate multiple initial data sets according to a preset time period, initial time information and multiple initial digital signals; an update module, used to update each initial data set to obtain a target data set, wherein the target signal in the target data set corresponds to the target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information; a second generation module, used to generate a target microseismic signal according to the target data set, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine.
[0007] The third aspect embodiment of the present disclosure proposes an electronic device, comprising: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to execute instructions to implement the method for synchronous acquisition of hydraulic fracturing microseismic signals as in the first aspect embodiment of the present disclosure.
[0008] The fourth aspect embodiment of the present disclosure proposes a computer-readable storage medium. When the instructions in the computer-readable storage medium are executed by the processor of an electronic device, the electronic device can implement the method for synchronous acquisition of hydraulic fracturing microseismic signals as in the first aspect embodiment of the present disclosure.
[0009] The fifth aspect of the present disclosure provides a computer program product, including a computer program, characterized in that the computer program is executed by a processor as the method for synchronous acquisition of hydraulic fracturing microseismic signals in the first aspect of the present disclosure.
[0010] The method, device, electronic device, storage medium and computer program product for synchronous acquisition of hydraulic fracturing microseismic signals proposed in this embodiment have at least the following beneficial effects: by acquiring multiple initial digital signals and reference microseismic signals in a mine, wherein each initial digital signal has corresponding initial time information, wherein the reference microseismic signal is acquired when a hydraulic fracturing event occurs, and the acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal, multiple initial data sets are generated according to a preset time period, initial time information and multiple initial digital signals, and each initial data set is updated to obtain a target data set, wherein the target signal in the target data set corresponds to the target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information, and a target microseismic signal is generated according to the target data set, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine, thereby improving the monitoring accuracy and timeliness of microseismic signals and enhancing the reliability of microseismic signal analysis, thereby helping to improve the overall performance of the mine safety monitoring system and provide a strong guarantee for mine safety production.
[0011] Additional aspects and advantages of the present disclosure will be given in part in the following description and in part will be obvious from the following description or learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The above and / or additional aspects and advantages of the present disclosure will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:
[0013] Figure 1 is a flow chart of a method for synchronously collecting microseismic signals of hydraulic fracturing according to the first embodiment of the present disclosure;
[0014] Figure 2 is a hardware structure diagram of a microseismic signal acquisition system proposed in an embodiment of the present disclosure;
[0015] Figure 3 is a flow chart of a method for synchronously collecting microseismic signals of hydraulic fracturing according to a second embodiment of the present disclosure;
[0016] Figure 4 is a schematic flow chart of a method for synchronously collecting microseismic signals of hydraulic fracturing according to a third embodiment of the present disclosure;
[0017] Figure 5 It is a block diagram of a hydraulic fracturing microseismic signal synchronous acquisition device according to the present disclosure;
[0018] Figure 6 A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown. DETAILED DESCRIPTION
[0019] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present disclosure, and are not to be construed as limitations of the present disclosure. On the contrary, the embodiments of the present disclosure include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.
[0020] It should be noted that the execution subject of the method for synchronously collecting microseismic signals of hydraulic fracturing in this embodiment may be a first server, and the first server may be configured in an electronic device, and the electronic device may include but is not limited to a terminal, a server, and the like.
[0021] It should be noted that the process of obtaining, storing, using, and processing information in the disclosed technical solution complies with the relevant provisions of national laws and regulations and does not violate public order and good morals.
[0022] It should be noted that in the embodiments of the present application, there may be existing solutions in the industry such as certain software, components, models, etc., which should be regarded as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of the present application, but it does not mean that the applicant has or will necessarily use the relevant content of the solution.
[0023] Figure 1 FIG. 1 is a flow chart of a method for synchronously collecting microseismic signals of hydraulic fracturing according to a first embodiment of the present disclosure. Figure 1 As shown, the method includes:
[0024] S101: Acquire multiple initial digital signals and reference microseismic signals in a mine, wherein each initial digital signal has corresponding initial time information, wherein the reference microseismic signal is acquired when a hydraulic fracturing event occurs, and the acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal.
[0025] The initial digital signal refers to a digital signal acquired at the current time, and the initial digital signal represents physical quantities in different directions, such as acceleration, vibration and other information.
[0026] Among them, see Figure 2 , Figure 2It is a hardware structure diagram of the microseismic signal acquisition system proposed in an embodiment of the present disclosure, that is, it can be a sensor based on the three components of x, y, and z, which collects analog signals in the direction, y direction, and z direction of the coal mine underground, and filters the aforementioned collected analog signals based on a filter, and then processes the filtered signals based on an analog-to-digital converter (AD converter) to obtain a 32-bit digital signal of the x component, a 32-bit digital signal of the y component, and a 32-bit digital signal of the z component, and the aforementioned 32-bit digital signal of the x component, the 32-bit digital signal of the y component, and the 32-bit digital signal of the z component are used together as the initial microseismic signal.
[0027] Among them, each initial digital signal has corresponding initial time information, which is used to describe the signal generation time of the initial signal. The signal generation time of the initial digital signal is usually based on the timing of the signal acquisition device by the timing device, so as to record the signal acquisition time corresponding to the signal while collecting the signal.
[0028] The acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal.
[0029] Among them, the reference microseismic signal is collected when a hydraulic fracturing event occurs. That is to say, in the embodiment of the present disclosure, when it is determined in the historical event segment that a hydraulic fracturing event occurs underground in a coal mine, a reference microseismic signal is obtained, and then, the reference microseismic signal can be combined to obtain the hydraulic fracturing microseismic signal at the current moment.
[0030] S102: Generate multiple initial data sets according to a preset time period, initial time information and multiple initial digital signals.
[0031] The preset time period may be adaptively set in combination with the microseismic signal acquisition requirements in actual business scenarios. The preset time period may be, for example, one minute, half a minute, etc., without limitation.
[0032] In some embodiments, multiple initial data sets are generated based on a preset time period, initial time information and multiple initial digital signals. The initial time information can be divided based on the preset time period, and multiple initial information divided into the same preset time period and the initial digital signal corresponding to the initial time information are used as the initial data set.
[0033] For example, the initial digital signal and the initial time information corresponding to the initial digital signal can form a data pair ((Data, Time), and the (Data, Time) data pairs collected based on a preset time period (whole minute) form an initial data set, thereby forming a continuous time series data set with whole minutes as units, ensuring the integrity and continuity of the data.
[0034] S103: updating each initial data set to obtain a target data set, wherein the target signal in the target data set corresponds to target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information.
[0035] The target signal in the target data set corresponds to the target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information.
[0036] Optionally, in some embodiments, each initial data set is updated to obtain a target data set, and the initial time information in each initial data set is updated to obtain an updated initial data set, and each initial signal in the target data set is subjected to wavelet transform processing to obtain multiple initial frequency components corresponding to each initial signal, and singular value decomposition processing is performed on the multiple initial frequency components corresponding to each initial signal, and a target signal is generated based on the decomposition results.
[0037] That is to say, in the embodiment of the present disclosure, the initial time information corresponding to the initial digital signal may be updated to obtain target time information with a smaller time granularity, thereby improving the accuracy of the time information.
[0038] In the embodiment of the present disclosure, the accuracy of the initial time information may be updated to the millisecond level, that is, the last three digits of the second level of all the initial time information in the data set may be calculated, and the time accuracy may be updated to the millisecond level. The calculation method is as follows:
[0039]
[0040] Among them, Time i is the exact time value in the i-th data pair, i represents the i-th monitoring data, m represents the last data number that ended in the previous second, and N end Indicates the number of the last ending data of the current second where the i-th data is located, N start Indicates the number of the data starting from the current second where the i-th data is located.
[0041] In the embodiment of the present disclosure, after the initial time information in each initial data set is updated to obtain an updated initial data set, the change of data can be better reflected and the accuracy of data processing can be improved.
[0042] In the disclosed embodiment, the initial time information in each initial data set is updated to obtain an updated initial data set, wavelet transform processing is performed on each initial signal in the target data set to obtain multiple initial frequency components corresponding to each initial signal, singular value decomposition processing is performed on the multiple initial frequency components corresponding to each initial signal, and high-frequency noise and outliers in the decomposition processing results are removed, valid signals are retained, and target signals are generated based on the valid signals.
[0043] S104: Generate a target microseismic signal according to the target data set, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine.
[0044] In the embodiment of the present disclosure, after each initial data set is updated to obtain a target data set, a target microseismic signal may be generated according to the target data set.
[0045] Optionally, in some embodiments, generating a target microseismic signal based on a target data set may include determining at least one intrinsic mode function (IMF) component in the target data set, determining a relationship coefficient between each IMF component and a reference microseismic signal, determining whether the IMF component is an invalid component based on the relationship coefficient to obtain a first judgment result, and generating a target microseismic signal based on the IMF component and the first judgment result.
[0046] That is to say, in the embodiment of the present disclosure, the target data set may be subjected to empirical mode decomposition (EMD) processing, that is, firstly fitting the maximum envelope and minimum envelope of the original signal through a cubic spline function, and calculating their average value as the mean envelope of the original signal. Then, the original signal is subtracted from the mean envelope to obtain a new signal, and this process is repeated until the new signal meets the definition conditions of the IMF to obtain the first-order IMF component. Next, the first-order IMF component is subtracted from the original signal to obtain the residual signal, and the above operation is repeated on the residual signal to obtain the subsequent IMF components of each order in turn, until the residual signal becomes a monotonic function or a constant. The decomposed signal can be expressed as the sum of all IMF components plus the decomposition remainder.
[0047] Wherein, the correlation coefficient is used to describe the correlation between the IMF component and the reference microseismic signal. The correlation coefficient can be, for example, a Pearson correlation coefficient, which is not limited.
[0048] In the embodiment of the present disclosure, after obtaining the IMF components corresponding to the target data set, the relationship coefficient between each IMF component and the reference microseismic signal can be determined, and whether the IMF component is an invalid component can be judged based on the relationship coefficient to obtain a first judgment result, and the target microseismic signal can be generated based on the IMF components and the first judgment result.
[0049] Optionally, in some embodiments, whether the IMF component is an invalid component is determined based on the relationship coefficient to obtain a first judgment result. When the relationship coefficient is greater than or equal to the relationship coefficient threshold, the first judgment result is determined to be: the IMF component is not an invalid component; when the relationship coefficient is less than the relationship coefficient threshold, the first judgment result is determined to be: the IMF component is an invalid component.
[0050] The relationship coefficient threshold can be adaptively set according to the synchronous acquisition requirements of hydraulic fracturing microseismic signals in actual business scenarios, and there is no restriction on this.
[0051] That is to say, in the embodiment of the present disclosure, the relationship coefficient may be compared with the relationship coefficient threshold, and when the relationship coefficient is greater than or equal to the relationship coefficient threshold, the first judgment result is determined to be: the IMF component is not an invalid component, and when the relationship coefficient is less than the relationship coefficient threshold, the first judgment result is determined to be: the IMF component is an invalid component.
[0052] Optionally, in some embodiments, a target microseismic signal is generated based on the IMF component and the first judgment result. When the first judgment result indicates that the IMF component is not an invalid component, it is determined whether there is a chaotic signal in the IMF component to obtain a second judgment result. The target microseismic signal is generated based on the IMF component and the second judgment result.
[0053] That is to say, in the embodiments of the present disclosure, when the first judgment result indicates that the IMF component is not an invalid component, it is determined whether there is a chaotic signal in the IMF component to obtain a second judgment result, and a target microseismic signal is generated based on the IMF component and the second judgment result.
[0054] Optionally, in some embodiments, a target microseismic signal is generated based on the IMF component and the second judgment result. When the second judgment result indicates that there is no chaotic signal in the IMF component, Fourier transform processing is performed on the IMF component to obtain initial spectrum data of the IMF component, and it is determined whether the initial spectrum data contains the target frequency component to obtain a third judgment result. The target microseismic signal is generated based on the IMF component and the third judgment result.
[0055] The target frequency component is the main frequency component in the reference microseismic signal.
[0056] That is to say, in the embodiments of the present disclosure, when the second judgment result indicates that there is no chaotic signal in the IMF component, Fourier transform processing can be performed on the IMF component to obtain initial spectrum data of the IMF component, and it can be determined whether the initial spectrum data contains the target frequency component to obtain a third judgment result, and the target microseismic signal can be generated based on the IMF component and the third judgment result.
[0057] Optionally, in some embodiments, a target microseismic signal is generated based on the IMF component and the third judgment result. When the third judgment result indicates that the initial spectrum data contains the target frequency component, the IMF component corresponding to the initial spectrum data is used as the target component, and signal reconstruction processing is performed on at least one target component to obtain the target microseismic signal.
[0058] That is to say, in the embodiments of the present disclosure, when the third judgment result indicates that the initial spectrum data contains the target frequency component, the IMF component corresponding to the initial spectrum data is used as the target component, and signal reconstruction processing is performed on at least one target component to obtain the target microseismic signal.
[0059] In the disclosed embodiment, multiple initial digital signals and reference microseismic signals are acquired in a mine, wherein each initial digital signal has corresponding initial time information, wherein the reference microseismic signal is acquired when a hydraulic fracturing event occurs, and the acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal. Multiple initial data sets are generated according to a preset time period, initial time information and multiple initial digital signals, and each initial data set is updated to obtain a target data set, wherein the target signal in the target data set corresponds to the target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information. According to the target data set, a target microseismic signal is generated, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine. This can improve the monitoring accuracy and timeliness of microseismic signals and enhance the reliability of microseismic signal analysis, thereby helping to improve the overall performance of the mine safety monitoring system and provide strong guarantees for mine safety production.
[0060] Figure 3 FIG. 1 is a flow chart of a method for synchronously collecting microseismic signals of hydraulic fracturing according to a second embodiment of the present disclosure. Figure 3 As shown, the method includes:
[0061] S301: Acquire multiple initial digital signals and reference microseismic signals in a mine, wherein each initial digital signal has corresponding initial time information, wherein the reference microseismic signal is acquired when a hydraulic fracturing event occurs, and the acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal.
[0062] The specific description of S301 can be found in the above embodiment, which will not be repeated here.
[0063] S302: Acquire initial time information based on a slave device, wherein the slave device supports the Precision Time Protocol (PTP).
[0064] In the disclosed embodiment, the slave device supports the Precision Time Protocol (PTP), and the slave device may be, for example, a 1588 slave device, which may specifically use the IEEE 1588 Precision Time Protocol, without limitation.
[0065] That is to say, in the embodiment of the present disclosure, the initial time information can be obtained from the device based on 1588.
[0066] S303: Match the initial time information of the initial digital signals to determine the initial time information corresponding to each initial digital signal.
[0067] In an embodiment of the present disclosure, after obtaining initial time information based on a slave device, where the slave device supports the Precision Time Protocol (PTP), the initial time information of the initial digital signal can be matched to determine the initial time information corresponding to each initial digital signal, thereby improving the accuracy of the initial digital signal time information to facilitate the accuracy and synchronization of subsequent signal processing.
[0068] S304: Generate multiple initial data sets according to a preset time period, initial time information and multiple initial digital signals.
[0069] S305: updating each initial data set to obtain a target data set, wherein the target signal in the target data set corresponds to target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information.
[0070] S306: Generate a target microseismic signal according to the target data set, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine.
[0071] The specific description of S304-S306 can be found in the above embodiments, which will not be repeated here.
[0072] In the disclosed embodiment, multiple initial digital signals and reference microseismic signals are obtained in a mine, wherein each initial digital signal has corresponding initial time information, and then the initial time information is obtained based on a slave device, wherein after the slave device supports the precise time protocol PTP, the initial time information of the initial digital signal can be matched to determine the initial time information corresponding to each initial digital signal, thereby improving the accuracy of the time information of the initial digital signal, so as to ensure the accuracy and synchronization of subsequent signal processing, and generating multiple initial data sets according to a preset time period, initial time information and multiple initial digital signals, and updating each initial data set to obtain a target data set, wherein the target signal in the target data set corresponds to the target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information, and generating a target microseismic signal according to the target data set, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine, thereby improving the monitoring accuracy and timeliness of the microseismic signal and enhancing the reliability of the microseismic signal analysis, thereby helping to improve the overall performance of the mine safety monitoring system and provide a strong guarantee for mine safety production.
[0073] In the embodiments of the present disclosure, see Figure 4 , Figure 4 It is a flow chart of a method for synchronously acquiring microseismic signals of hydraulic fracturing according to the third embodiment of the present disclosure, that is, the initial digital signals of the x, y, and z components are acquired, and the initial time information is acquired based on the 1588 slave, and the initial digital signals and the initial time information are matched to determine the initial time information corresponding to the initial digital signals, and the data pairs consisting of the initial digital signals and the initial time information are divided into multiple initial data sets based on the preset time period of the whole minute, and the initial time information in the initial data set is updated (the last three digits of the time of all data pairs in the data set are determined in seconds, and the data pair time is updated to milliseconds), and then the initial digital signals in the data set are matched. Wave transform and singular value decomposition denoising are performed to obtain a target data set, and at least one intrinsic mode function IMF component in the target data set is determined, and a relationship coefficient between the IMF component and a reference signal is determined. When the relationship coefficient is greater than or equal to a relationship coefficient threshold, it is judged whether there is a chaotic signal in the IMF component. When there is no chaotic signal in the IMF component, the IMF component is subjected to Fourier transform processing to obtain initial spectrum data of the IMF component. When the initial spectrum data contains a target frequency component, the IMF component corresponding to the initial spectrum data is used as a target component, and a signal reconstruction processing is performed on at least one target component to obtain a target microseismic signal.
[0074] Figure 5 is a block diagram of a hydraulic fracturing microseismic signal synchronous acquisition device according to the present disclosure, such as Figure 5As shown, the hydraulic fracturing microseismic signal synchronous acquisition device 50 includes:
[0075] An acquisition module 501 is used to acquire multiple initial digital signals and reference microseismic signals in a mine, wherein each initial digital signal has corresponding initial time information, wherein the reference microseismic signal is acquired when a hydraulic fracturing event occurs, and the acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal;
[0076] A first generating module 502, configured to generate a plurality of initial data sets according to a preset time period, initial time information and a plurality of initial digital signals;
[0077] An updating module 503 is used to update each initial data set to obtain a target data set, wherein the target signal in the target data set corresponds to the target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information;
[0078] The second generating module 504 is used to generate a target microseismic signal according to the target data set, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine.
[0079] In some embodiments of the present disclosure, the update module 503 is further configured to:
[0080] The initial time information in each initial data set is updated to obtain an updated initial data set;
[0081] Performing wavelet transform processing on each initial signal in the target data set respectively to obtain a plurality of initial frequency components corresponding to each initial signal;
[0082] Singular value decomposition is performed on multiple initial frequency components corresponding to each initial signal, and a target signal is generated according to the decomposition result.
[0083] In some embodiments of the present disclosure, the second generating module 504 is further configured to:
[0084] Determine at least one intrinsic mode function (IMF) component in the target data set;
[0085] Determine the relationship coefficient between each IMF component and the reference microseismic signal; wherein the relationship coefficient is used to describe the correlation between the IMF component and the reference microseismic signal;
[0086] Judging whether the IMF component is an invalid component according to the relationship coefficient to obtain a first judgment result;
[0087] A target microseismic signal is generated according to the IMF component and the first judgment result.
[0088] In some embodiments of the present disclosure, the second generating module 504 is further configured to:
[0089] When the first judgment result indicates that the IMF component is not an invalid component, judging whether there is a chaotic signal in the IMF component to obtain a second judgment result;
[0090] A target microseismic signal is generated according to the IMF component and the second judgment result.
[0091] In some embodiments of the present disclosure, the second generating module 504 is further configured to:
[0092] When the second judgment result indicates that there is no chaotic signal in the IMF component, Fourier transform processing is performed on the IMF component to obtain initial spectrum data of the IMF component;
[0093] Determining whether the initial frequency spectrum data contains a target frequency component to obtain a third determination result, wherein the target frequency component is a main frequency component in the reference microseismic signal;
[0094] A target microseismic signal is generated according to the IMF component and the third judgment result.
[0095] In some embodiments of the present disclosure, the second generating module 504 is further configured to:
[0096] When the third judgment result indicates that the initial spectrum data contains the target frequency component, the IMF component corresponding to the initial spectrum data is used as the target component;
[0097] Signal reconstruction processing is performed on at least one target component to obtain a target microseismic signal.
[0098] In some embodiments of the present disclosure, the acquisition module 501 is further used to:
[0099] After acquiring a plurality of initial digital signals in the mine, initial time information is acquired based on a slave device, wherein the slave device supports a precise time protocol PTP;
[0100] The initial time information of the initial digital signals is matched to determine the initial time information corresponding to each initial digital signal.
[0101] In some embodiments of the present disclosure, the update module 503 is further configured to:
[0102] When the relationship coefficient is greater than or equal to the relationship coefficient threshold, determining the first judgment result is: the IMF component is not an invalid component;
[0103] When the relationship coefficient is less than the relationship coefficient threshold, it is determined that the first judgment result is that the IMF component is an invalid component.
[0104] It should be noted that the aforementioned explanation of the method for synchronously collecting microseismic signals of hydraulic fracturing is also applicable to the synchronously collecting device for microseismic signals of hydraulic fracturing in this embodiment, and will not be described in detail here.
[0105] In the disclosed embodiment, multiple initial digital signals and reference microseismic signals are acquired in a mine, wherein each initial digital signal has corresponding initial time information, wherein the reference microseismic signal is acquired when a hydraulic fracturing event occurs, and the acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal. Multiple initial data sets are generated according to a preset time period, initial time information and multiple initial digital signals, and each initial data set is updated to obtain a target data set, wherein the target signal in the target data set corresponds to the target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information. According to the target data set, a target microseismic signal is generated, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine. This can improve the monitoring accuracy and timeliness of microseismic signals and enhance the reliability of microseismic signal analysis, thereby helping to improve the overall performance of the mine safety monitoring system and provide strong guarantees for mine safety production.
[0106] Figure 6 A block diagram of an exemplary electronic device suitable for implementing embodiments of the present disclosure is shown.
[0107] Figure 6 The electronic device 12 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.
[0108] like Figure 6 As shown, the electronic device 12 is in the form of a general purpose computing device. The components of the electronic device 12 may include, but are not limited to: one or more processors or processing units 16, a memory 28, and a bus 18 that connects various system components (including the memory 28 and the processing unit 16).
[0109] The bus 18 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus and Peripheral Component Interconnection (PCI) bus.
[0110] The electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device 12, including volatile and non-volatile media, removable and non-removable media.
[0111] The memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. The electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 34 may be used to read and write non-removable, non-volatile magnetic media ( Figure 6 Not shown, often called a "hard drive").
[0112] although Figure 6 Not shown in the figure, a disk drive for reading and writing a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing a removable non-volatile optical disk (e.g., a compact disc read only memory (hereinafter referred to as: CD-ROM), a digital versatile disc read only memory (hereinafter referred to as: DVD-ROM) or other optical media) may be provided. In these cases, each drive may be connected to the bus 18 via one or more data medium interfaces. The memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to perform the functions of the various embodiments of the present disclosure.
[0113] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in the memory 28, such program modules 42 including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules 42 generally perform the functions and / or methods of the embodiments described in the present disclosure.
[0114] The electronic device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), may also communicate with one or more devices that enable the human body to interact with the electronic device 12, and / or communicate with any device that enables the electronic device 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). Such communication may be performed through an input / output (I / O) interface 22. In addition, the electronic device 12 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter 20. As shown, the network adapter 20 communicates with other modules of the electronic device 12 through a bus 18. It should be understood that, although not shown in the figure, other hardware and / or software modules may be used in conjunction with the electronic device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.
[0115] The processing unit 16 executes various functional applications and parameter information determination by running the program stored in the memory 28, such as implementing the business data storage method mentioned in the above embodiment, or implementing the business data acquisition method mentioned in the above embodiment.
[0116] It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present disclosure, unless otherwise specified, the meaning of "plurality" is two or more.
[0117] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present disclosure includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present disclosure belong.
[0118] It should be understood that the various parts of the present disclosure can be implemented in hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.
[0119] A person of ordinary skill in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.
[0120] In addition, each functional unit in each embodiment of the present disclosure may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.
[0121] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.
[0122] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0123] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present disclosure. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present disclosure.
Claims
1. A method for synchronously collecting microseismic signals of hydraulic fracturing, characterized in that: The method comprises: Acquire multiple initial digital signals and reference microseismic signals in a mine, wherein each of the initial digital signals has corresponding initial time information, wherein the reference microseismic signal is acquired when a hydraulic fracturing event occurs, and the acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal; Generate a plurality of initial data sets according to a preset time period, the initial time information and the plurality of initial digital signals; updating each of the initial data sets to obtain a target data set, wherein a target signal in the target data set corresponds to target time information, and a time granularity of the target time information is smaller than a time granularity of the initial time information; A target microseismic signal is generated according to the target data set, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine.
2. The method according to claim 1, characterized in that The updating of each of the initial data sets to obtain a target data set includes: Updating the initial time information in each of the initial data sets to obtain an updated initial data set; Performing wavelet transform processing on each of the initial signals in the target data set respectively to obtain a plurality of initial frequency components corresponding to each of the initial signals; Singular value decomposition is performed on a plurality of initial frequency components corresponding to each of the initial signals, and the target signal is generated according to the decomposition result.
3. The method according to claim 1, characterized in that Generating a target microseismic signal according to the target data set includes: Determine at least one intrinsic mode function (IMF) component in the target data set; Determine a relationship coefficient between each of the IMF components and the reference microseismic signal; wherein the relationship coefficient is used to describe the correlation between the IMF component and the reference microseismic signal; Determining whether the IMF component is an invalid component according to the relationship coefficient to obtain a first determination result; The target microseismic signal is generated according to the IMF component and the first judgment result.
4. The method according to claim 3, characterized in that The generating the target microseismic signal according to the IMF component and the first judgment result includes: When the first judgment result indicates that the IMF component is not an invalid component, judging whether there is a chaotic signal in the IMF component to obtain a second judgment result; The target microseismic signal is generated according to the IMF component and the second judgment result.
5. The method according to claim 4, characterized in that The generating the target microseismic signal according to the IMF component and the second judgment result includes: When the second judgment result indicates that no chaotic signal exists in the IMF component, Fourier transform processing is performed on the IMF component to obtain initial spectrum data of the IMF component; Determining whether the initial frequency spectrum data contains a target frequency component to obtain a third determination result, wherein the target frequency component is a main frequency component in the reference microseismic signal; The target microseismic signal is generated according to the IMF component and the third judgment result.
6. The method according to claim 5, characterized in that The generating the target microseismic signal according to the IMF component and the third judgment result includes: When the third judgment result indicates that the initial spectrum data contains the target frequency component, the IMF component corresponding to the initial spectrum data is used as the target component; Signal reconstruction processing is performed on at least one of the target components to obtain the target microseismic signal.
7. The method according to claim 1, characterized in that After acquiring a plurality of initial digital signals in the mine, the method further comprises: Acquiring the initial time information based on a slave device, wherein the slave device supports a precise time protocol (PTP); The initial time information of the initial digital signal is matched to determine the initial time information corresponding to each of the initial digital signals.
8. The method according to claim 3, characterized in that The step of judging whether the IMF component is an invalid component according to the relationship coefficient to obtain a first judgment result includes: In a case where the relationship coefficient is greater than or equal to a relationship coefficient threshold, determining that the first judgment result is: the IMF component is not an invalid component; When the relationship coefficient is less than the relationship coefficient threshold, it is determined that the first judgment result is: the IMF component is an invalid component.
9. A synchronous acquisition device for hydraulic fracturing microseismic signals, characterized in that: The device comprises: An acquisition module, used to acquire multiple initial digital signals and reference microseismic signals in a mine, wherein each of the initial digital signals has corresponding initial time information, wherein the reference microseismic signal is acquired when a hydraulic fracturing event occurs, and the acquisition time of the reference microseismic signal is earlier than the acquisition time of the initial digital signal; A first generating module, configured to generate a plurality of initial data sets according to a preset time period, the initial time information and a plurality of the initial digital signals; An updating module, configured to update each of the initial data sets to obtain a target data set, wherein the target signal in the target data set corresponds to target time information, and the time granularity of the target time information is smaller than the time granularity of the initial time information; The second generating module is used to generate a target microseismic signal according to the target data set, wherein the target microseismic signal is used to indicate the occurrence of a hydraulic fracturing event in the mine.
10. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; The processor is configured to execute the instructions to implement the method according to any one of claims 1 to 8.