Combined mutual inductor full transparent transmission and detection system based on active excitation sound waves

Abstract

The invention relates to the technical field of sound wave detection, and discloses a combined mutual inductor full transparent transmission and detection system based on active excitation sound waves, and the system comprises a sound wave full transparent transmission and detection module which is used for achieving the sound wave detection under the complex sound impedance of a multi-layer composite structure of a combined mutual inductor; the sound wave data collection module is used for carrying out denoising processing on the sound wave detection data; the data processing and analyzing module is used for classifying the de-noised sound wave detection data, performing superposition marking on the same data, and obtaining different types of sound wave detection data; the grading marking and data screening module is used for carrying out safety and abnormal data classification on different types of sound wave detection data; the abnormity alarm and fault processing module is used for carrying out fault processing on the abnormal sound wave detection data; according to the invention, sound wave transparent transmission is realized, the sound wave detection precision is improved, and the combined transformer can be effectively monitored in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of sound wave detection, and in particular to a combined mutual inductor full-transmission and detection system based on actively excited sound waves. Background Art

[0002] When detecting the multi-layer composite structure of the combined mutual inductor in the prior art, due to the complex structure and the difference in acoustic impedance, there are problems such as difficulty in sound wave transmission, low detection accuracy and susceptibility to interference from the external environment. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the present invention provides a combined mutual inductor full transparent transmission and detection system based on actively excited sound waves, which is used to solve the problems of difficulty in sound wave transparent transmission, low detection accuracy and susceptibility to external environmental interference in the prior art.

[0004] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is:

[0005] The combined mutual inductor full transparent transmission and detection system based on active excitation sound waves includes:

[0006] The acoustic wave full transmission and detection module is used to realize acoustic wave detection under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor based on the phased array element delay strategy and in the low audio frequency mode combined with the high audio frequency mode to obtain acoustic wave detection data;

[0007] The acoustic wave data collection module is used to receive the acoustic wave detection data and perform denoising on the acoustic wave detection data using a wavelet transform method to obtain denoised acoustic wave detection data;

[0008] A data processing and analysis module is used to receive the denoised acoustic wave detection data, classify the denoised acoustic wave detection data, mark the overlap of the same data, and obtain different types of acoustic wave detection data;

[0009] A classification marking and data identification module is used to receive different types of acoustic wave detection data, compare different types of acoustic wave detection data with preset acoustic wave detection data thresholds, and obtain safe acoustic wave detection data and abnormal acoustic wave detection data;

[0010] The abnormal alarm and fault handling module is used to receive safe acoustic wave detection data and abnormal acoustic wave detection data, and issue an alarm to handle the abnormal acoustic wave detection data. At the same time, it draws a time signal change curve for the safe acoustic wave detection data to predict the signal change status in subsequent time periods.

[0011] Furthermore, the core of the phased array element delay strategy is to achieve precise control of the acoustic wave beam by adjusting the delay time between each array element.

[0012] Furthermore, the specific process of realizing the acoustic wave detection under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor in the low audio frequency mode combined with the high audio frequency mode is as follows:

[0013] The low-frequency sound mode is used to detect distant target objects under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, and obtain low-frequency sound wave detection data;

[0014] The high-frequency sound mode is used to detect close-range or high-precision target objects under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, and obtain high-frequency sound wave detection data.

[0015] Furthermore, both the low-frequency sound wave detection data and the high-frequency sound wave detection data are sound wave detection data, and are high sound wave transmission formed under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, and sound wave focusing formed at the defect to produce acoustic resonance characteristics, thereby realizing the beam signal generated by active sound transmission excitation and detection from the outside to the inside under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor.

[0016] Furthermore, the specific process of comparing different types of acoustic wave detection data with the preset acoustic wave detection data threshold is as follows:

[0017] Different types of acoustic wave detection data that meet the preset acoustic wave detection data threshold are marked green to obtain safe acoustic wave detection data;

[0018] Different types of acoustic wave detection data that do not meet the preset acoustic wave detection data threshold are marked in red to obtain abnormal acoustic wave detection data.

[0019] Furthermore, it also includes a system login interface and a device debugging module, which are used to operate the user to enter the account password to log in, verify and modify the password, and adjust the parameters of the sound wave detection equipment.

[0020] The present invention has the following beneficial effects:

[0021] 1. The combined mutual inductor full-transmission and detection system based on active excitation sound waves proposed in the present invention has an active sound wave excitation technology with full-transmission properties in the sound wave full-transmission and detection module, that is, the active sound wave excitation technology combining low / high audio frequency modes is adopted, and the delay strategy between phased array elements is combined to form high sound wave transmission at the impedance interface of the composite material, thereby avoiding the strong reflection of sound waves under traditional ultrasonic and guided wave excitation, thereby improving the transmission ability of active sound waves in the composite structure, and forming sound wave focusing at the defects to produce sound resonance characteristics, realizing active sound transmission excitation and detection of the multi-layer composite structure of the combined mutual inductor from the outside to the inside, which can effectively monitor the combined mutual inductor in real time, reduce the impact of faults on the combined mutual inductor, and improve the service life of the equipment to a certain extent;

[0022] 2. In the acoustic wave data collection module, an acoustic wave denoising technology is designed, that is, the wavelet denoising technology based on the wavelet transform algorithm is used to effectively denoise the data, improve the clarity and reliability of the acoustic wave signal, and restore the pure signal through denoising for the noise-contaminated data, effectively improve the expression effect of the acoustic wave on the internal situation of the combined mutual inductor, and effectively detect the internal situation of the combined mutual inductor;

[0023] 3. Data classification and alarm technology is also designed in the data processing and analysis module, classification marking and data identification module, abnormal alarm and fault handling module. Data preprocessing, data classification marking and alarm system are used to effectively process the data obtained by sound waves, effectively reduce the impact of large amounts of data on the system, quickly and effectively convert data, classify and mark the processed data, quickly identify abnormal data, and transmit specific information to the user end through the alarm system. At the same time, an alarm is issued to remind users to pay attention and handle abnormalities in time to avoid irreversible damage to the system caused by abnormal operation, effectively improving the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of the combined mutual inductor full transparent transmission and detection system based on active excitation sound waves proposed in the present invention. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0026] like Figure 1 As shown, the combined mutual inductor full transparent transmission and detection system based on active excitation sound waves includes:

[0027] The acoustic wave full transmission and detection module is used to realize acoustic wave detection under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor based on the phased array element delay strategy and in the low audio frequency mode combined with the high audio frequency mode to obtain acoustic wave detection data.

[0028] Specifically, the core of the phased array element delay strategy is to achieve precise control of the acoustic wave beam by adjusting the delay time between each array element.

[0029] Specifically, the specific process of realizing the acoustic wave detection under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor in the low audio frequency mode combined with the high audio frequency mode is as follows:

[0030] The low-frequency sound mode is used to detect distant target objects under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, and obtain low-frequency sound wave detection data;

[0031] The high-frequency sound mode is used to detect close-range or high-precision target objects under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, and obtain high-frequency sound wave detection data.

[0032] Specifically, the low-frequency sound wave detection data and the high-frequency sound wave detection data are both sound wave detection data, and are high sound wave transmission formed under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, and sound wave focusing is formed at the defect to produce acoustic resonance characteristics, thereby realizing the beam signal generated by active sound transmission excitation and detection from the outside to the inside under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor.

[0033] In the present embodiment, sound waves are transmitted to achieve full transparent transmission and detection of sound waves under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, specifically: the combined mutual inductor is fully transparently transmitted and detected by sending active excitation sound waves using a sound wave detection device, and the sound wave adopts a low / high audio frequency mode combination technology. The combination of low audio frequency (20Hz to 200Hz) and high audio frequency (4kHz to 20kHz) can make the sound wave detection more comprehensive; the wavelength of low-frequency sound waves is longer, so the penetrating power is strong, and it can propagate a longer distance, which makes the low-frequency sound waves have an advantage in detecting targets at a longer distance; at the same time, due to the longer wavelength of the sound waves, the low-frequency sound waves attenuate slowly during the propagation process, can pass through obstacles, and are suitable for use in complex environments. The propagation distance of low-frequency noise is long and is not easily blocked, and can pass through obstacles to reach people directly. Ear, suitable for use in scenarios that require long-distance transmission; in addition, high-frequency sound waves have a short wavelength, good sound field directivity, and high resolution, and are suitable for scenarios that require high-precision detection, such as detecting small defects. High-frequency sound waves have a shorter wavelength and high frequency, and can provide more detailed and higher-precision imaging effects, which are suitable for scenarios that require high-resolution and small organ imaging; while low-frequency sound waves have a longer wavelength and strong penetrating power, and can penetrate deep tissues to provide deeper imaging effects; therefore, combining the two can take into account the needs of high-resolution and deep scanning, improve the accuracy and resolution of detection, and at the same time better detect and measure in complex environments, reduce interference from the external environment, adapt to more complex measurement environments, ensure measurement stability and accuracy, and expand the range and depth of detection while ensuring high resolution. Secondly, for the active acoustic wave excitation technology that combines low / high audio frequency modes used, combined with the phased array element delay strategy, high acoustic wave transmission is formed at the impedance interface of the composite material, avoiding strong acoustic wave reflection under traditional ultrasonic and guided wave excitation, thereby improving the transmission ability of active acoustic waves in the composite structure, and forming acoustic wave focusing at the defects to produce acoustic resonance characteristics, thereby realizing active acoustic transmission excitation and detection from the outside to the inside of the multi-layer composite structure of the combined mutual inductor. Among them, the core of the delay strategy between phased array elements is to achieve precise control of the beam by adjusting the delay time between each array element. The delay line achieves phase compensation by changing the propagation time of the electromagnetic wave in the transmission line. Its working principle is that for any frequency signal, the delay line will provide a fixed delay time, that is: ΔT = T, where T is a fixed time. Electromagnetic waves of different frequencies will have the same phase change after passing through the delay line, that is: Δφ = 2πfΔt, t represents time, and f represents frequency; thereby offsetting the phase difference caused by the path difference and achieving precise control of the beam. The delay phased array can generate various beam shapes, including narrow beams, wide beams and fan-shaped beams, and can generate different beam shapes at different frequencies. Through its flexible beamforming capability, it can track multiple targets at the same time and improve the system's multi-tasking capability.

[0034] The acoustic wave data collection module is used to receive the acoustic wave detection data and perform denoising processing on the acoustic wave detection data using the wavelet transform method to obtain denoised acoustic wave detection data.

[0035] In this embodiment, the acoustic wave detection data is collected, and the fluctuation signal is received by the signal receiving device. When the composition, structure and density of the medium change, the propagation speed, energy attenuation and spectrum components of the acoustic wave will also change, so as to collect the information transmitted back by the acoustic wave detection, and transmit the information to the data terminal for subsequent data analysis and other steps; at the same time, the acoustic wave data is denoised to achieve data optimization and improve data quality. Specifically, the collected acoustic wave information needs to be denoised to reduce the degree of influence of noise during the acoustic wave transmission process. The denoising process adopts a wavelet denoising algorithm based on wavelet transform. According to the characteristics that the wavelet decomposition coefficients of noise and signal in different frequency bands have different intensity distributions, the wavelet coefficients corresponding to the noise in each frequency band are removed, and the wavelet decomposition coefficients of the original signal are retained. Then, the processed coefficients are reconstructed by wavelet to obtain a pure signal. Compared with other denoising methods, wavelet denoising is The effect is better under low signal-to-noise ratio conditions, and the denoising effect on time-varying signals and sudden signal is particularly obvious. The algorithm can process data through methods such as modulus maximum denoising, correlation denoising, wavelet threshold denoising and wavelet packet threshold denoising. Modulus maximum denoising removes noise by analyzing the modulus maximum of the wavelet transform of the signal. Correlation denoising uses the correlation of the wavelet coefficients of the signal and noise at different scales for denoising. Wavelet threshold denoising sets a threshold, regards the wavelet coefficients less than the threshold as noise and removes them, retains the coefficients greater than the threshold for reconstruction to remove noise, and wavelet packet threshold denoising decomposes the low-frequency and high-frequency parts of the signal to extract useful information from each frequency band. It is more suitable for high-precision ultrasonic echo signal analysis, effectively improving the clarity and reliability of the sound wave signal. For noise-contaminated data, the pure signal can be restored through denoising, effectively improving the expression effect of the sound wave on the internal situation of the combined mutual inductor, and effectively detecting the internal situation of the combined mutual inductor.

[0036] The data processing and analysis module is used to receive the denoised acoustic wave detection data, classify the denoised acoustic wave detection data, mark the overlap of the same data, and obtain different types of acoustic wave detection data.

[0037] In this embodiment, various processes are performed on the optimized data, and calculations and analyses are performed on the optimized data. Specifically, after the denoising process is completed, the optimized data is preprocessed, the huge amount of data is divided into different categories by type, and the same data is marked for overlap, saving the analysis of duplicate data. After the preprocessing of the data is completed, the optimized data is calculated through the data terminal, and the final data is analyzed and conclusions are drawn.

[0038] The grading labeling and data identification module is used to receive different types of acoustic wave detection data, compare the different types of acoustic wave detection data with preset acoustic wave detection data thresholds, and obtain safe acoustic wave detection data and abnormal acoustic wave detection data.

[0039] Specifically, the specific process of comparing different types of acoustic wave detection data with the preset acoustic wave detection data threshold is as follows:

[0040] Different types of acoustic wave detection data that meet the preset acoustic wave detection data threshold are marked green to obtain safe acoustic wave detection data;

[0041] Different types of acoustic wave detection data that do not meet the preset acoustic wave detection data threshold are marked in red to obtain abnormal acoustic wave detection data.

[0042] In this embodiment, the processed data is graded and marked, and the data is identified by a comparison system. Specifically, different types of acoustic wave detection data are classified according to the model of the combined mutual inductor to which they belong, and compared according to a preset acoustic wave detection data threshold range. Data within the threshold range is marked green to indicate safe data, data outside the safety range but not exceeding the specified percentage is marked yellow to indicate that the data is in a changing state, and data completely exceeding the specified range is marked red to indicate that this type of data is abnormal. After the data is graded and marked, the data is classified and processed according to the marked color.

[0043] The abnormal alarm and fault handling module is used to receive safe acoustic wave detection data and abnormal acoustic wave detection data, and issue an alarm to handle the abnormal acoustic wave detection data. At the same time, it draws a time signal change curve for the safe acoustic wave detection data to predict the signal change status in subsequent time periods.

[0044] In this embodiment, abnormal data is sent and an alarm is issued to prompt the user to handle the fault in time, specifically: after completing the hierarchical marking of the data, the red-marked data is sorted, the data is tracked, the combination transformer number to which the data belongs is determined, the alarm signal of the combination transformer is triggered, and the detailed information is sorted and sent to the user end, the detailed information of the abnormal data is provided, and it is convenient to process the combination transformer, the data marked in yellow is summarized, a curve chart is made according to its recent changes, and a curve prediction is made for the subsequent time period, and the data after the statistics are completed is sent to the user end to ensure that the user has a sufficient understanding of the changes in the power grid. After completing the sorting and sending of the data, the user can quickly determine the faulty power grid through the detailed information of the abnormal data, confirm the fault according to the information, complete the maintenance of the combination transformer, greatly reduce the time of the combination transformer failure, and at the same time, the user can judge the state of the combination transformer through the curve of the change data, debug some parameters of the corresponding combination transformer, and ensure that the combination transformer is restored to a normal state.

[0045] Specifically, it also includes a system login interface and a device debugging module, which are used to operate the user to enter the account and password to log in, verify and modify the password, and adjust the parameters of the acoustic wave detection equipment.

[0046] In this embodiment, the operating user of the system logs in and adjusts the parameters of the acoustic wave detection equipment, specifically: the operating user account logs in through the terminal computer, enters the account password and verifies it to ensure that the user information is consistent with the record. After the login is completed, the system parameters can be modified through the computer, including the login password, various equipment parameters, account permissions, user information and other data. The system parameter adjustment enables the subsequent steps to proceed smoothly, and provides a valid parameter range to provide a reference direction for data analysis.

[0047] In summary, the combined mutual inductor full transmission and detection system based on active excitation sound waves proposed in the present invention is designed with an active sound wave excitation technology with full transmission properties in the sound wave full transmission and detection module, that is, an active sound wave excitation technology combining low / high audio frequency modes is adopted, and combined with the phased array element delay strategy, a high sound wave transmission is formed at the impedance interface of the composite material, and the strong reflection of the sound waves under traditional ultrasonic and guided wave excitation is avoided, thereby improving the transmission ability of the active sound wave in the composite structure, and forming sound wave focusing at the defect to produce sound resonance characteristics, realizing the active sound transmission excitation and detection of the multi-layer composite structure of the combined mutual inductor from the outside to the inside, which can effectively monitor the combined mutual inductor in real time, reduce the impact of faults on the combined mutual inductor, and improve the service life of the equipment to a certain extent; at the same time, in the sound wave data collection module, a sound wave denoising technology is designed, that is, a wavelet denoising technology based on a wavelet transform algorithm is adopted, which effectively The data is denoised to improve the clarity and reliability of the sound wave signal. The noise-contaminated data can be restored to a pure signal through denoising, which effectively improves the expression effect of the sound wave on the internal situation of the combined transformer and effectively detects the internal situation of the combined transformer. In addition, data classification and alarm technology are also designed in the data processing and analysis module, the classification marking and data identification module, and the abnormal alarm and fault handling module. The data preprocessing, data classification marking and alarm system are used to effectively process the data obtained by the sound wave, effectively reduce the impact of the huge amount of data on the system, quickly and effectively convert the data, and classify and mark the processed data, quickly identify the abnormal data, and transmit specific information to the user end through the alarm system. At the same time, an alarm is issued to remind the user to pay attention and handle the abnormality in time to avoid the abnormal operation causing irreversible damage to the system, effectively improving the service life of the equipment.

[0048] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

[0049] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the present invention.

Claims

1. A combined mutual inductor full transparent transmission and detection system based on active excitation sound waves, characterized in that: include: The acoustic wave full transmission and detection module is used to realize acoustic wave detection under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor based on the phased array element delay strategy and in the low audio frequency mode combined with the high audio frequency mode to obtain acoustic wave detection data; The acoustic wave data collection module is used to receive the acoustic wave detection data and perform denoising on the acoustic wave detection data using a wavelet transform method to obtain denoised acoustic wave detection data; A data processing and analysis module is used to receive the denoised acoustic wave detection data, classify the denoised acoustic wave detection data, mark the overlap of the same data, and obtain different types of acoustic wave detection data; A classification marking and data identification module is used to receive different types of acoustic wave detection data, compare different types of acoustic wave detection data with preset acoustic wave detection data thresholds, and obtain safe acoustic wave detection data and abnormal acoustic wave detection data; The abnormal alarm and fault handling module is used to receive safe acoustic wave detection data and abnormal acoustic wave detection data, and issue an alarm to handle the abnormal acoustic wave detection data. At the same time, it draws a time signal change curve for the safe acoustic wave detection data to predict the signal change status in subsequent time periods.

2. The full transparent transmission and detection method based on active excitation sound waves according to claim 1 is characterized in that: The core of the phased array element delay strategy is to achieve precise control of the acoustic wave beam by adjusting the delay time between each array element.

3. The full transparent transmission and detection method based on active excitation sound waves according to claim 2 is characterized in that: The specific process of realizing acoustic wave detection under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor in the low-frequency mode combined with the high-frequency mode is as follows: The low-frequency sound mode is used to detect distant target objects under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, and obtain low-frequency sound wave detection data; The high-frequency sound mode is used to detect close-range or high-precision target objects under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, and obtain high-frequency sound wave detection data.

4. The full transparent transmission and detection method based on active excitation sound waves according to claim 3 is characterized in that: Both the low-frequency sound wave detection data and the high-frequency sound wave detection data are sound wave detection data, and are the high sound wave transmission formed under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor, and the sound wave focusing formed at the defect to produce the acoustic resonance characteristics, and the beam signal generated by the active sound transmission excitation and detection from the outside to the inside under the complex acoustic impedance of the multi-layer composite structure of the combined mutual inductor.

5. The full transparent transmission and detection method based on active excitation sound waves according to claim 4 is characterized in that: The specific process of comparing different types of acoustic wave detection data with the preset acoustic wave detection data threshold is as follows: Different types of acoustic wave detection data that meet the preset acoustic wave detection data threshold are marked green to obtain safe acoustic wave detection data; Different types of acoustic wave detection data that do not meet the preset acoustic wave detection data threshold are marked in red to obtain abnormal acoustic wave detection data.

6. The full transparent transmission and detection method based on active excitation sound waves according to claim 5 is characterized in that: It also includes a system login interface and a device debugging module, which are used to operate the user to enter the account and password to log in, verify and modify the password, and adjust the parameters of the acoustic wave detection equipment.

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