Method, system, equipment and medium based on multi-composite ultrasonic penetration technology

Abstract

The invention discloses a method, a system, equipment and a medium based on a multi-composite ultrasonic penetration technology, and the method comprises the steps: generating high-frequency fundamental ultrasonic waves through a piezoelectric transducer array, and adjusting the frequency range to match the acoustic impedance characteristic of target soil; first, second and third harmonics are generated through the induction of a nonlinear medium in the fundamental wave propagation process, the phases of the harmonics are adjusted to realize coherent superposition, and the fundamental wave and the first, second and third harmonics are guided into a composite waveguide device for focusing and delay compensation to form a high-energy composite wave beam; a pulse interval is adjusted by adopting an intermittent emission strategy so as to inhibit energy attenuation in the soil; reflected wave spectrum components are monitored through an embedded acoustic sensor array, and driving parameters are dynamically adjusted; and residual ultrasonic energy is captured and fed back to a driving circuit to form a closed-loop energy utilization system. By integrating multi-order harmonic resonance and a dynamic frequency tuning technology, efficient transmission and deep penetration of ultrasonic energy in a complex medium are realized.

Description

Technical Field

[0001] The present invention relates to the field of ultrasonic penetration technology, and in particular to a method, system, equipment and medium based on multi-composite ultrasonic penetration technology. Background Art

[0002] Existing ultrasonic penetration technology primarily relies on a single frequency or a simple combination of frequencies to achieve energy transmission and detection. This significantly limits its energy transfer efficiency, particularly in heterogeneous media (such as non-uniform soils, impure rock formations, or high-density sediments), where signal attenuation is severe and effective penetration depth is insufficient. Traditional methods typically utilize a fixed-frequency ultrasonic generator, which concentrates energy output near the fundamental frequency while failing to fully utilize higher-order harmonic components. This results in uneven energy distribution and makes it difficult to achieve stable penetration.

[0003] In addition, existing technologies often lack an adaptive adjustment mechanism for the dynamic response of the medium. When ultrasonic waves propagate between layers of media with different densities or elasticities, energy loss is exacerbated due to impedance mismatch and scattering effects, and the penetration efficiency is significantly reduced, ultimately limiting the effective penetration depth. Existing technologies lack an adaptive adjustment mechanism for the dynamic response of the medium, and are unable to optimize the frequency and phase parameters in real time according to changes in the acoustic properties of the medium, thereby further reducing the stability and applicability of the system. More critically, existing solutions generally fail to effectively solve the problem of peak energy maintenance. Ultrasonic signals are easily attenuated rapidly due to medium absorption and interface reflection during propagation, and cannot form a sustained high-energy penetration effect. At the same time, traditional technologies have insufficient research on the multi-band synergistic resonance effect, and have failed to fully utilize the phase coupling and energy superposition effects between the fundamental wave and harmonics, resulting in the inability of ultrasonic energy to be effectively focused at the target depth, ultimately affecting the stability and controllability of the overall penetration performance.

[0004] In summary, the existing ultrasonic penetration technology still has many shortcomings in terms of energy utilization, penetration depth and adaptability to complex media. It is urgent to break through the above bottlenecks through innovative technical means to improve the transmission efficiency and penetration ability of ultrasonic waves in complex media. Summary of the Invention

[0005] In view of the above existing problems, the present invention is proposed.

[0006] Therefore, the present invention provides methods, systems, equipment and media based on multi-composite ultrasonic penetration technology to solve the problem that the existing ultrasonic penetration technology has the problems of low energy utilization, insufficient penetration depth and poor adaptability to complex media, mainly due to the lack of optimization of the collaborative resonance of fundamental wave and harmonics, dynamic frequency adjustment mechanism, and insufficient multi-band energy coupling and phase matching.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] In a first aspect, the present invention provides a method based on multi-composite ultrasonic penetration technology, comprising:

[0009] A piezoelectric transducer array generates high-frequency fundamental ultrasonic waves, and the frequency range is adjusted to match the acoustic impedance characteristics of the target soil;

[0010] During the propagation of the fundamental wave, the first, second and third harmonics are induced by a nonlinear medium, and the phases of the harmonics are adjusted to achieve coherent superposition. The fundamental wave and the first, second and third harmonics are introduced into a composite waveguide device for focusing and delay compensation to form a high-energy composite beam.

[0011] An intermittent emission strategy is used to adjust the pulse interval to suppress energy attenuation in the soil;

[0012] The reflected wave spectrum components are monitored through an embedded acoustic sensor array, and the driving parameters are dynamically adjusted;

[0013] A broadband transducer array is deployed at the penetrating terminal to capture residual ultrasonic energy and feed it back to the driving circuit, forming a closed-loop energy utilization system.

[0014] As a preferred solution of the method based on multi-composite ultrasonic penetration technology described in the present invention, wherein: the piezoelectric transducer adopts multiple groups of piezoelectric ceramics arranged in an annular array, and each unit is synchronously excited by a phase controller;

[0015] The phase controller controls the excitation timing of multiple piezoelectric transducer units by precisely adjusting the time delay or phase angle of the driving signal; the driving signal is a pulse width modulated sine wave, and the duty cycle is controlled in a nonlinear range to reserve space for harmonic generation.

[0016] As a preferred embodiment of the method based on multi-composite ultrasonic penetration technology of the present invention, the first, second and third harmonics are induced by a nonlinear medium, wherein the nonlinear medium is a waveguide structure of a specific shape, which is used to make different harmonics produce different propagation speeds and paths;

[0017] The amplitude of the harmonics is controlled by a weighted average algorithm, in which the second harmonic has the highest weight. The frequencies of the first, second and third harmonics satisfy an integer multiple relationship, and the phase difference is adjusted to close to zero through a real-time feedback system to achieve coherent superposition.

[0018] As a preferred solution of the method based on multi-composite ultrasonic penetration technology described in the present invention, the composite waveguide device includes a multi-stage focusing lens and a delay line, the multi-stage focusing lens adopts a refractive index design that increases from the center to the edge, and the delay line is an adjustable path structure made of low sound speed material, which is used to introduce microsecond delay to high-frequency harmonics.

[0019] As a preferred solution of the method based on multi-composite ultrasonic penetration technology described in the present invention, the intermittent emission strategy adjusts the pulse interval according to the soil type, with clay using a longer interval and sand using a shorter interval.

[0020] As a preferred solution of the method based on multi-composite ultrasonic penetration technology described in the present invention, the dynamically adjusted driving parameters include driving voltage, pulse repetition frequency and delay line parameters, the optimization objective function uses the signal-to-noise ratio of the composite wave and the penetration energy integral value as dual variables, and uses the gradient descent method to iteratively converge to the optimal solution.

[0021] As a preferred solution of the method based on multi-composite ultrasonic penetration technology described in the present invention, a broadband transducer array is deployed at the penetration terminal to capture residual ultrasonic waves, reflected waves and scattered waves that are not absorbed by the soil and convert them into electrical signals. The recovered energy is rectified, that is, the output AC power is converted into DC power and then fed back to the drive circuit to form a closed-loop energy utilization system. During re-injection, the waveform distortion is corrected by the phase conjugation technology, so that the recovered energy enhances the amplitude of the subsequent transmitted beam in the form of anti-phase.

[0022] In a second aspect, the present invention provides a system based on multi-composite ultrasonic penetration technology, comprising:

[0023] The piezoelectric transducer array module is composed of multiple groups of piezoelectric ceramic units arranged in a ring array, and is used to generate fundamental ultrasonic waves in the form of pulse width modulated sinusoidal waves;

[0024] A harmonic resonance excitation module, comprising a nonlinear medium, a real-time phase feedback system, and a weighted average controller, is used to induce the generation of first, second, and third harmonics through the nonlinear medium. The real-time phase feedback system is used to adjust the harmonic phase difference to near zero, and the weighted average controller controls the harmonic amplitude in a manner that gives the second harmonic the highest weight.

[0025] A composite beamforming module includes a multi-stage focusing lens group and an adjustable delay line. The multi-stage focusing lens adopts a refractive index design that increases from the center to the edge. The adjustable delay line is an adjustable path structure made of low-acoustic-velocity material, which is used to introduce microsecond-level delay to high-frequency harmonics.

[0026] A soil penetration control module having a soil type identification unit and a pulse interval regulator for dynamically adjusting the transmission interval according to the soil type;

[0027] Real-time feedback optimization module, used to monitor the reflected wave spectrum and dynamically adjust system parameters;

[0028] Energy recovery and reuse module, used to capture residual sound energy and feed it back to the drive circuit after conversion;

[0029] The system control center is used to coordinate the working sequence and data interaction of each module.

[0030] In a third aspect, the present invention provides an electronic device comprising a memory and a processor; the memory is used to store computer-executable instructions, and the processor implements the steps of a method based on multi-composite ultrasonic penetration technology when executing the computer-executable instructions.

[0031] In a fourth aspect, the present invention provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the steps of a method based on multi-composite ultrasonic penetration technology.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] ① The multi-composite ultrasonic penetration technology proposed in the present invention has significant technological progress and practical advantages over the existing technology. In traditional ultrasonic penetration technology, due to the serious energy attenuation and scattering loss when a single-frequency sound wave propagates in the soil medium, the penetration depth is limited and the energy utilization rate is low. The present invention innovatively adopts the average resonance superposition technology of the fundamental wave and the first, second and third harmonics to construct a composite ultrasonic beam with high energy density, so that the peak sound pressure is increased to more than 3 times that of the fundamental wave, effectively overcoming the defect of insufficient penetration depth of traditional technology. In terms of energy distribution optimization, the present invention controls the amplitude weight of each harmonic through a weighted average algorithm, combines multi-stage acoustic lens and delay line compensation technology, realizes the precise focusing of the composite beam, forms a centrally symmetrical Bessel wave mode, significantly reduces the lateral energy diffusion, and improves the energy utilization rate by more than 40%.

[0034] ② This invention uses an embedded acoustic sensor array to monitor the reflected wave spectrum characteristics in real time, and employs an intelligent algorithm to dynamically adjust the drive parameters, enabling the system to automatically adapt to changes in the acoustic impedance characteristics of different soil types. This effectively addresses the problem of a sudden drop in penetration efficiency caused by changes in soil composition in traditional technologies, allowing the system to maintain stable penetration performance under various geological conditions such as clay and sand. Regarding energy attenuation suppression, the invention's innovative intermittent emission strategy optimizes the matching relationship between pulse intervals and soil relaxation time, avoiding the cavitation effect caused by continuous waves that damages the soil structure while significantly reducing heat dissipation losses, further improving energy transmission efficiency.

[0035] ③ This invention captures residual ultrasonic energy through a broadband transducer array and feeds it back to the drive circuit after rectification, achieving efficient energy recycling and reducing overall system energy consumption by 15%-20%, significantly improving the economic and sustainable nature of the technology. Furthermore, the hardware compatibility advantage of this invention enables system integration based on existing piezoelectric transducer arrays without relying on specific hardware, thus possessing broad application adaptability and commercial potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 This is a logic diagram of the overall process of a method based on multi-composite ultrasonic penetration technology according to an embodiment of the present invention.

[0038] Figure 2 Schematic diagram of a piezoelectric transducer array according to a method based on multi-composite ultrasonic penetration technology according to an embodiment of the present invention.

[0039] Figure 3 Schematic diagram of the nonlinear medium structure of the method based on multi-composite ultrasonic penetration technology according to one embodiment of the present invention.

[0040] Figure 4 Schematic diagram of a composite waveguide device according to a method based on multi-composite ultrasonic penetration technology according to an embodiment of the present invention.

[0041] Figure 5 Schematic diagram of a closed-loop energy utilization system according to an embodiment of the present invention based on a method of multi-composite ultrasonic penetration technology. DETAILED DESCRIPTION

[0042] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It is obvious that the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in this field without creative work should fall within the scope of protection of the present invention.

[0043] Example 1, reference Figure 1-Figure 5 As an embodiment of the present invention, a method based on multi-composite ultrasonic penetration technology is provided, such as Figure 1 The specific steps shown include:

[0044] A piezoelectric transducer array generates high-frequency fundamental ultrasonic waves, and the frequency range is adjusted to match the acoustic impedance characteristics of the target soil;

[0045] During the propagation of the fundamental wave, the first, second and third harmonics are induced through the nonlinear medium, and the harmonic phases are adjusted to achieve coherent superposition. The fundamental wave and the first, second and third harmonics are then introduced into a composite waveguide device for focusing and delay compensation to form a high-energy composite beam.

[0046] An intermittent emission strategy is used to adjust the pulse interval to suppress energy attenuation in the soil;

[0047] The reflected wave spectrum components are monitored through an embedded acoustic sensor array, and the driving parameters are dynamically adjusted;

[0048] A broadband transducer array is deployed at the penetrating terminal to capture residual ultrasonic energy and feed it back to the driving circuit, forming a closed-loop energy utilization system.

[0049] It should be noted that the present invention aims to solve key technical problems existing in existing ultrasonic penetration technologies, such as low energy utilization, insufficient penetration depth, and poor medium adaptability. Specifically, when traditional single-frequency or simple multi-frequency ultrasonic waves propagate in complex media, due to the lack of systematic optimization of the cooperative resonance mechanism of the fundamental wave and harmonics, the energy is dispersed and it is difficult to form an effective superposition; the existing technology cannot dynamically adapt to the changes in the acoustic characteristics of different media, resulting in severe attenuation of the signal when propagating in non-uniform media; at the same time, due to the failure to establish a multi-band energy coupling and phase matching mechanism, the ultrasonic energy cannot be effectively focused at the target depth, resulting in unstable penetration effect and limited range of action. The present invention innovatively integrates multi-order harmonic resonance and dynamic frequency tuning technology through the above-mentioned method steps, and is committed to breaking through the above-mentioned technical bottlenecks and realizing efficient transmission and deep penetration of ultrasonic energy in complex media.

[0050] In an embodiment of the present invention, a high-frequency fundamental ultrasonic wave is generated by a piezoelectric transducer array, and the frequency range is adjusted to match the acoustic impedance characteristics of the target soil, wherein:

[0051] The piezoelectric transducer uses multiple groups of piezoelectric ceramics arranged in a ring array. Each unit is synchronously excited by a phase controller to ensure wavefront flatness.

[0052] The phase controller controls the excitation timing of multiple piezoelectric transducer units by precisely adjusting the time delay or phase angle of the driving signal;

[0053] The driving signal is a pulse width modulated sine wave, and the duty cycle is controlled in a nonlinear range to reserve space for harmonic generation.

[0054] Specifically, through the piezoelectric transducer array, such as Figure 2As shown, high-frequency fundamental ultrasonic waves are generated, and the frequency range setting is adjusted to balance penetration depth and energy efficiency. The fundamental frequency needs to be optimized according to the acoustic impedance characteristics of the target soil. Usually, an initial value lower than the natural resonance frequency of the soil is selected to avoid premature energy dissipation. The nonlinear range refers to when the duty cycle deviates from the symmetrical value (usually 30%-70%), and the positive and negative half-cycles of the driving signal are asymmetric, causing the strain-electric field relationship of the piezoelectric material to enter the nonlinear region, thereby exciting harmonics. The wave generated in this step serves as the "seed wave" for subsequent superposition.

[0055] In an embodiment of the present invention, inducing the generation of first, second, and third harmonics through a nonlinear medium during fundamental wave propagation, and adjusting the harmonic phases to achieve coherent superposition includes:

[0056] During the propagation of the fundamental wave, the first, second and third harmonics are induced by the nonlinear medium, where the nonlinear medium is a waveguide structure with a specific shape, such as Figure 3 As shown, it is used to make different harmonics produce different propagation speeds and paths;

[0057] The amplitude of the harmonics is controlled using a weighted average algorithm, in which the second harmonic has the highest weight. The frequencies of the first, second, and third harmonics satisfy an integer multiple relationship (single frequency, double frequency, triple frequency), and the phase difference is adjusted to near zero through a real-time feedback system to achieve coherent superposition.

[0058] It's important to note that soil particles respond differently to ultrasonic waves of different frequencies. The low-frequency fundamental wave (single frequency) has deep penetration but low resolution, making it suitable for moving large particles. The second harmonic (double frequency) easily resonates with the elastic deformation of clay particles, and the third harmonic (tripled frequency) produces localized cavitation, loosening dense layers. Therefore, the harmonic amplitudes are controlled using a weighted average algorithm, with the second harmonic receiving the highest weight to match the viscoelastic response of soil particles. Resonance is achieved through an impedance matching layer composed of a gradient acoustic material, ensuring a smooth transition in acoustic impedance from the transmitter to the soil. Its thickness is designed based on the quarter-wavelength principle to maximize energy transfer efficiency. Essentially, it utilizes the principle of destructive interference. Through an intermediate dielectric layer of a specific thickness, the acoustic waves reflected from the two interfaces cancel each other out, achieving full energy transmission.

[0059] In an embodiment of the present invention, the fundamental wave and harmonics are introduced into a composite waveguide device, such as Figure 4 As shown, the composite waveguide device includes multi-stage focusing lenses and delay lines, which integrate the fundamental wave (single wavelength) and harmonics (double and triple wavelengths) into a high-energy composite beam.

[0060] Specifically, the multi-stage focusing lens assembly is made of a material with a gradient sound velocity. Because high-frequency sound waves propagate faster in the medium, the lens assembly adopts a refractive index design that increases from center to edge. The low-frequency fundamental wave is deflected at a large angle when passing through the high-refractive-index region at the lens' periphery, requiring a longer propagation path. The high-frequency harmonics are less deflected through the low-refractive-index region at the center, requiring a shorter path. This graded refraction compensates for frequency-dependent propagation velocity differences, ensuring that all frequency components are precisely focused at the target depth, creating a "confocal" effect of energy superposition.

[0061] Specifically, the delay line is a phase calibration device specifically for high-frequency harmonics. Since high-frequency sound waves propagate in the soil about 5%-10% faster than low-frequency sound waves, the harmonics will arrive at the target position earlier than the fundamental wave. The delay line uses an adjustable path structure made of low-speed sound materials (such as Teflon) to actively introduce microsecond-level transmission delays for high-frequency harmonics: for example, an 8μs delay is set for 90kHz harmonics, a 4μs delay is set for 60kHz harmonics, and the fundamental wave passes directly. This time delay compensation enables the wavefronts of all frequencies to arrive at the focal point at the same time, achieving complete phase synchronization, thereby increasing the peak sound pressure of the composite beam to more than three times that of the fundamental wave. The peak sound pressure of the superimposed composite beam reaches more than three times that of the fundamental wave, and the energy distribution presents a centrally symmetric Bessel pattern to suppress lateral scattering.

[0062] It should be noted that the multi-composite ultrasonic penetration technology proposed in the present invention has significant technological progress and practical advantages compared to the existing technology. In traditional ultrasonic penetration technology, due to the serious energy attenuation and scattering loss when a single-frequency sound wave propagates in the soil medium, the penetration depth is limited and the energy utilization rate is low. The present invention innovatively adopts the average resonance superposition technology of the fundamental wave and the first, second and third harmonics to construct a composite ultrasonic beam with high energy density, so that the peak sound pressure is increased to more than 3 times that of the fundamental wave, effectively overcoming the defect of insufficient penetration depth of traditional technology. In terms of energy distribution optimization, the present invention controls the amplitude weight of each harmonic through a weighted average algorithm, combines multi-stage acoustic lens and delay line compensation technology, realizes the precise focusing of the composite beam, forms a centrally symmetrical Bessel wave mode, significantly reduces the lateral energy diffusion, and improves the energy utilization rate by more than 40%.

[0063] In an embodiment of the present invention, after the composite ultrasonic beam enters the soil, its low-frequency fundamental wave component maintains long-distance propagation, while the high-frequency harmonics produce a localized cavitation effect in the gaps between particles through nonlinear interactions. That is, high-frequency vibrations generate tiny bubbles (cavitation bubbles) in the gaps between soil particles. The shock waves released when the bubbles collapse can loosen clay clumps and reduce shear resistance. To suppress energy attenuation, an intermittent transmission strategy is adopted, dynamically adjusting the pulse interval according to the soil type: for clay (longer relaxation time), a longer interval is used; for sandy soil (shorter relaxation time), a shorter interval is used. This ensures that when a new pulse arrives, a large amount of residual energy from the previous pulse remains. By accumulating multiple pulses, the energy density in the active area can be increased, while also saving energy compared to continuous waves.

[0064] In this embodiment of the present invention, an embedded acoustic sensor array monitors the spectral components of the reflected wave, extracting the attenuation coefficients and phase distortion of the fundamental and harmonic waves. An adaptive algorithm dynamically adjusts the drive parameters based on feedback data to ensure that resonance conditions are consistently met during the penetration process. Dynamically adjusted drive parameters include drive voltage, pulse repetition frequency, and delay line parameters. The optimization objective function uses the composite wave's signal-to-noise ratio and the integrated penetration energy as dual variables, and uses a gradient descent method to iteratively converge to the optimal solution.

[0065] It should be noted that the present invention uses an embedded acoustic sensor array to monitor the reflected wave spectrum characteristics in real time and employs an intelligent algorithm to dynamically adjust the drive parameters, enabling the system to automatically adapt to changes in the acoustic impedance characteristics of different soil types. This effectively addresses the problem of sudden drops in penetration efficiency caused by changes in soil composition in traditional technologies, enabling the system to maintain stable penetration performance in a variety of geological conditions, such as clay and sand. Regarding energy attenuation suppression, the present invention's innovative intermittent emission strategy optimizes the matching relationship between pulse intervals and soil relaxation time, avoiding the cavitation effect caused by continuous waves that damages the soil structure while significantly reducing heat dissipation losses, further improving energy transmission efficiency.

[0066] In the embodiment of the present invention, Figure 5 As shown, a broadband transducer array is deployed at the penetrating terminal to capture residual ultrasonic waves, reflected waves, and scattered waves that are not absorbed by the soil and convert them into electrical signals. The recovered energy is rectified, that is, the output AC power is converted into DC power and then fed back to the drive circuit to form a closed-loop energy utilization system. During re-injection, the waveform distortion is corrected through phase conjugation technology, so that the recovered energy enhances the amplitude of the subsequent transmitted beam in the form of anti-phase.

[0067] It should be noted that the present invention captures residual ultrasonic energy through a broadband transducer array and feeds it back to the drive circuit after rectification, achieving efficient energy recycling and reducing overall system energy consumption by 15%-20%, significantly improving the economic and sustainable nature of the technology. Furthermore, the present invention's hardware compatibility allows system integration based on existing piezoelectric transducer arrays without relying on specific hardware, thus possessing broad application adaptability and commercial potential.

[0068] Example 2: This example provides a system based on multi-composite ultrasonic penetration technology, including:

[0069] The piezoelectric transducer array module is composed of multiple groups of piezoelectric ceramic units arranged in a ring array, and is used to generate fundamental ultrasonic waves in the form of pulse width modulated sinusoidal waves;

[0070] The harmonic resonance excitation module includes a nonlinear medium, a real-time phase feedback system, and a weighted average controller. The nonlinear medium is used to induce the generation of first, second, and third harmonics. The real-time phase feedback system is used to adjust the harmonic phase difference to close to zero. The weighted average controller controls the harmonic amplitude in a way that the second harmonic has the highest weight.

[0071] A composite beamforming module, comprising a multi-stage focusing lens group and an adjustable delay line. The multi-stage focusing lens adopts a refractive index design that increases from the center to the edge. The adjustable delay line is an adjustable path structure made of low-acoustic-velocity materials, which is used to introduce microsecond-level delay to high-frequency harmonics.

[0072] A soil penetration control module having a soil type identification unit and a pulse interval regulator for dynamically adjusting the transmission interval according to the soil type;

[0073] Real-time feedback optimization module, used to monitor the reflected wave spectrum and dynamically adjust system parameters;

[0074] Energy recovery and reuse module, used to capture residual sound energy and feed it back to the drive circuit after conversion;

[0075] The system control center is used to coordinate the working sequence and data interaction of each module.

[0076] It should be noted that the technical solution of the system based on multi-composite ultrasonic penetration technology and the technical solution of the method based on multi-composite ultrasonic penetration technology mentioned above belong to the same concept. For the details not described in detail in the technical solution of the system based on multi-composite ultrasonic penetration technology in this embodiment, please refer to the description of the technical solution of the method based on multi-composite ultrasonic penetration technology mentioned above.

[0077] The above-mentioned unit modules can be embedded in or independent of the processor in the electronic device in the form of hardware, or can be stored in the memory of the electronic device in the form of software, so that the processor can call and execute the corresponding operations of the above-mentioned modules.

[0078] This embodiment also provides an electronic device, which includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the electronic device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method based on multi-composite ultrasonic penetration technology is implemented. The display screen of the electronic device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the electronic device can be a touch layer covering the display screen, or a button, trackball or touchpad provided on the electronic device housing, or an external keyboard, touchpad or mouse.

[0079] This embodiment further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the method proposed in the above embodiment is implemented.

[0080] The storage medium proposed in this embodiment and the method proposed in the above embodiment belong to the same inventive concept. For technical details not fully described in this embodiment, please refer to the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0081] Through the above description of the implementation methods, those skilled in the art can clearly understand that the present invention can be implemented with the help of software and necessary general-purpose hardware, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory (FLASH), hard disk or optical disk, etc., including a number of instructions for enabling an electronic device (which can be a personal computer, server, or network device, etc.) to execute the method of the embodiment of the present invention.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0083] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiment of the present application can be implemented in various computer languages.

[0084] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0085] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0086] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0087] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0088] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A method based on multi-composite ultrasonic penetration technology, characterized in that: include: A piezoelectric transducer array generates high-frequency fundamental ultrasonic waves, and the frequency range is adjusted to match the acoustic impedance characteristics of the target soil; During the propagation of the fundamental wave, the first, second and third harmonics are induced by a nonlinear medium, and the phases of the harmonics are adjusted to achieve coherent superposition. The fundamental wave and the first, second and third harmonics are introduced into a composite waveguide device for focusing and delay compensation to form a high-energy composite beam. An intermittent emission strategy is used to adjust the pulse interval to suppress energy attenuation in the soil; The reflected wave spectrum components are monitored through an embedded acoustic sensor array, and the driving parameters are dynamically adjusted; A broadband transducer array is deployed at the penetrating terminal to capture residual ultrasonic energy and feed it back to the driving circuit, forming a closed-loop energy utilization system.

2. The method based on multi-composite ultrasonic penetration technology according to claim 1, characterized in that: The piezoelectric transducer uses multiple groups of piezoelectric ceramics arranged in a ring array, and each unit is synchronously excited by a phase controller; The phase controller controls the excitation timing of multiple piezoelectric transducer units by precisely adjusting the time delay or phase angle of the driving signal; the driving signal is a pulse width modulated sine wave, and the duty cycle is controlled in a nonlinear range to reserve space for harmonic generation.

3. The method based on multi-composite ultrasonic penetration technology according to claim 2, characterized in that: The first, second and third harmonics are induced by a nonlinear medium, wherein the nonlinear medium is a waveguide structure of a specific shape, which is used to make different harmonics produce different propagation speeds and paths; The amplitude of the harmonics is controlled by a weighted average algorithm, in which the second harmonic has the highest weight. The frequencies of the first, second and third harmonics satisfy an integer multiple relationship, and the phase difference is adjusted to close to zero through a real-time feedback system to achieve coherent superposition.

4. The method based on multi-composite ultrasonic penetration technology according to claim 3, characterized in that: The composite waveguide device includes a multi-stage focusing lens and a delay line. The multi-stage focusing lens adopts a refractive index design that increases from the center to the edge. The delay line is an adjustable path structure made of low-acoustic-speed material and is used to introduce microsecond-level delay to high-frequency harmonics.

5. The method based on multi-composite ultrasonic penetration technology according to claim 4, characterized in that: The intermittent emission strategy adjusts the pulse interval according to the soil type, with clay using a longer interval and sand using a shorter interval.

6. The method based on multi-composite ultrasonic penetration technology according to claim 5, characterized in that: The dynamically adjusted driving parameters include driving voltage, pulse repetition frequency and delay line parameters. The optimization objective function uses the signal-to-noise ratio of the composite wave and the penetration energy integral value as dual variables, and adopts the gradient descent method to iteratively converge to the optimal solution.

7. The method based on multi-composite ultrasonic penetration technology according to claim 6, characterized in that: A broadband transducer array is deployed at the penetrating terminal to capture residual ultrasonic waves, reflected waves, and scattered waves that are not absorbed by the soil and convert them into electrical signals. The recovered energy is rectified, that is, the output AC power is converted into DC power and then fed back to the drive circuit to form a closed-loop energy utilization system. During re-injection, the waveform distortion is corrected through phase conjugation technology, so that the recovered energy enhances the amplitude of the subsequent transmitted beam in the form of anti-phase.

8. A system based on multi-composite ultrasonic penetration technology, applying the method based on multi-composite ultrasonic penetration technology according to any one of claims 1 to 7, characterized in that: include: The piezoelectric transducer array module is composed of multiple groups of piezoelectric ceramic units arranged in a ring array, which is used to generate fundamental ultrasonic waves in the form of pulse width modulated sinusoidal waves; A harmonic resonance excitation module, comprising a nonlinear medium, a real-time phase feedback system, and a weighted average controller, is used to induce the generation of first, second, and third harmonics through the nonlinear medium. The real-time phase feedback system is used to adjust the harmonic phase difference to near zero, and the weighted average controller controls the harmonic amplitude in a manner that gives the second harmonic the highest weight. A composite beamforming module includes a multi-stage focusing lens group and an adjustable delay line. The multi-stage focusing lens adopts a refractive index design that increases from the center to the edge. The adjustable delay line is an adjustable path structure made of low-acoustic-velocity material, which is used to introduce microsecond-level delay to high-frequency harmonics. A soil penetration control module having a soil type identification unit and a pulse interval regulator for dynamically adjusting the transmission interval according to the soil type; Real-time feedback optimization module, used to monitor the reflected wave spectrum and dynamically adjust system parameters; Energy recovery and reuse module, used to capture residual sound energy and feed it back to the drive circuit after conversion; The system control center is used to coordinate the working sequence and data interaction of each module.

9. An electronic device comprising a memory and a processor, characterized in that: The memory is used to store computer-executable instructions, and the processor implements the steps of the method based on multi-composite ultrasonic penetration technology according to any one of claims 1 to 7 when executing the computer-executable instructions.

10. A computer-readable storage medium having computer-executable instructions stored thereon, characterized in that: When the computer executable instructions are executed by a processor, the steps of the method based on multi-composite ultrasonic penetration technology according to any one of claims 1 to 7 are implemented.

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