A method and system for dynamically adjustable magnetic field focusing based on phased current element array

Abstract

The application discloses a dynamic adjustable magnetic field focusing method and system based on a phased current element array, and relates to the technical field of electromagnetic field control. The method comprises the following steps: based on a target focusing position, performing phase calibration on each current element in the current element array to obtain a phase compensation value of each current element, wherein the current element array comprises a plurality of current elements; based on the phase compensation value of each current element, determining an excitation signal of each current element; and based on the phase compensation value of each current element and the excitation signal of each current element, dynamically adjusting a phase term of each target point to enable the adjusted magnetic field to focus on the target focusing position, wherein the target point is a target point in the magnetic field generated by the current element array. According to the electromagnetic wave interference theory and the magnetic vector superposition principle, a dynamic focusing algorithm is constructed, the phase and amplitude of the excitation signal are adjusted in real time, the array unit is driven to generate a coherent superimposed magnetic field, and high magnetic field energy dynamic focusing is realized at the target position.

Description

Technical Field

[0001] This application relates to the field of electromagnetic field control technology, specifically to a dynamic adjustable magnetic field focusing method and system based on a phase-controlled current element array. Background Technology

[0002] Existing magnetic field focusing technologies mainly rely on permanent magnets or electromagnetic arrays with solidified structures. The position and shape of the magnetic field focusing point generated by these technologies are fixed and cannot be adjusted, resulting in low operational accuracy and limited efficiency. Although mechanical scanning arrays can move the focusing point within a limited range, mechanical inertia and transmission delays lead to slow response speeds, making it difficult to meet the requirements of real-time dynamic focusing. At the same time, the complex mechanical structure brings power consumption and reliability risks. Summary of the Invention

[0003] To address the aforementioned technical problems, this application is proposed. Embodiments of this application provide a dynamically adjustable magnetic field focusing method and system based on a phase-controlled current element array, solving the problems of slow response speed due to mechanical inertia and transmission delay in the prior art, which makes it difficult to meet real-time dynamic focusing requirements, while also addressing the power consumption and reliability risks associated with complex mechanical structures.

[0004] According to one aspect of this application, a dynamically adjustable magnetic field focusing method based on a phase-controlled current element array is provided, comprising:

[0005] Based on the target focusing position, phase calibration is performed on each current element in the current element array to obtain the phase compensation value of each current element; wherein, the current element array includes multiple current elements;

[0006] The excitation signal for each current element is determined based on the phase compensation value of each current element.

[0007] Based on the phase compensation value of each current element and the excitation signal of each current element, the phase term of each target point is dynamically adjusted so that the adjusted magnetic field is focused on the target focusing position; wherein, the target point is the target point in the magnetic field generated by the current element array.

[0008] In one embodiment, the step of performing phase calibration on each current element in the current element array based on the target focusing position includes:

[0009] Determine the operating environment of the current element array;

[0010] Based on the magnetic permeability of the medium in the working environment and its corresponding dielectric constant, the wavenumber in the working environment is corrected to obtain the equivalent wavenumber.

[0011] Based on the equivalent wavenumber and the target focusing position, phase calibration is performed on each current element in the current element array.

[0012] In one embodiment, calibrating the phase of each current element in the current element array based on the equivalent wavenumber and the target focusing position includes:

[0013] Determine the starting position of the current element array;

[0014] Determine the position of each current element in the current element array;

[0015] Based on the target focusing position, the starting position of the current element array, the equivalent wavenumber, and the position of each current element in the current element array, the phase of each current element in the current element array is calibrated to obtain the phase compensation value of each current element.

[0016] In one embodiment, the formula for calculating the phase compensation value of each current element is:

[0017] ;in, For the equivalent wavenumber, The target focus position vector, The array's starting position vector. The position vector of the current element. This is for composite calibration phase.

[0018] In one embodiment, the formula for calculating the equivalent wavenumber is:

[0019] ;in, The operating frequency of the excitation current signal. The permeability of the medium, is the equivalent dielectric constant of the medium.

[0020] In one embodiment, dynamically adjusting the phase term of each target point based on the phase compensation value of each current element and the excitation signal of each current element includes:

[0021] Based on the phase compensation value of each current element and the excitation signal of each current element, determine whether the position of each target point is the target focusing position;

[0022] If the position of the target point is the target focus position, then the phase term of the target point is canceled out;

[0023] If the position of the target point is not the target focus position, then the phase term of the target point is partially canceled out.

[0024] In one embodiment, the formula for calculating the dynamic adjustment phase term function of the target point is:

[0025] ;in, For the first The amplitude of the excitation current of each current element. For the equivalent wavenumber, For the first Phase compensation value of each current element, This is the position vector of the target point.

[0026] In one embodiment, after dynamically adjusting the phase term of each target point based on the phase compensation value of each current element and the excitation signal of each current element, the dynamically adjustable magnetic field focusing method based on a phase-controlled current element array further includes:

[0027] The total magnetic field is calculated based on each adjusted target point.

[0028] In one embodiment, the formula for calculating the total magnetic field is:

[0029] ;in, The magnetic field distribution of a single current element is calculated using the Biot-Savart law. The mode of interference enhancement or suppression of the magnetic field in space is controlled by the dynamic adjustment of the phase term function at the target point.

[0030] According to another aspect of this application, a dynamically adjustable magnetic field focusing system based on a phase-controlled current element array is provided, comprising:

[0031] The phase calculation module is used to perform phase calibration on each current element in the current element array based on the target focusing position, so as to obtain the phase compensation value of each current element; wherein, the current element array includes multiple current elements;

[0032] The determination module is used to determine the excitation signal of each current element based on the phase compensation value of each current element;

[0033] An adjustment module is used to dynamically adjust the phase term of each target point based on the phase compensation value of each current element and the excitation signal of each current element, so that the adjusted magnetic field is focused on the target focusing position; wherein, the target point is the target point in the magnetic field generated by the current element array.

[0034] This application provides a dynamically adjustable magnetic field focusing method and system based on a phased-array current element, comprising: performing phase calibration on each current element in the current element array based on the target focusing position to obtain a phase compensation value for each current element, wherein the current element array includes multiple current elements; determining the excitation signal for each current element based on the phase compensation value; and dynamically adjusting the phase term of each target point based on the phase compensation value and the excitation signal of each current element, so that the adjusted magnetic field is focused at the target focusing position, wherein the target point is the target point in the magnetic field generated by the current element array. Addressing the need for precise control of spatial magnetic field distribution characteristics, a dynamic focusing algorithm is constructed based on electromagnetic wave interference theory and the principle of magnetic vector superposition. By adjusting the phase and amplitude of the excitation signal in real time, the array elements are driven to generate a coherent superimposed magnetic field, achieving dynamic focusing of high magnetic field energy at the target position. Employing a dynamically adjustable phased-array structure, by calculating the composite phase compensation amount in real time and optimizing the excitation current distribution, dynamic magnetic field focusing at any point in space can be achieved without mechanical structures, fundamentally eliminating the power consumption and reliability risks caused by complex mechanical movements. It overcomes the shortcomings of traditional magnetic field focusing technology, such as fixed and unadjustable focal point, large mechanical response delay, and positioning inaccuracy caused by medium interference, and realizes dynamically adjustable tracking magnetic field focusing. Attached Figure Description

[0035] The above and other objects, features, and advantages of this application will become more apparent from the more detailed description of the embodiments of this application in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0036] Figure 1 This is a flowchart illustrating a dynamically adjustable magnetic field focusing method based on a phase-controlled current element array provided by an exemplary embodiment of the present invention.

[0037] Figure 2 This is a schematic diagram of the structure of a current element array provided in an exemplary embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram of the process of virtual spherical wave after focusing by a current element array, provided in an exemplary embodiment of the present invention.

[0039] Figure 4 This is a schematic diagram of the structure of a dynamically adjustable magnetic field focusing system based on a phase-controlled current element array provided in an exemplary embodiment of the present invention.

[0040] Figure 5 This is a structural diagram of an electronic device provided in an exemplary embodiment of this application.

[0041] Reference numerals: 201, Phase calculation module; 202, Determination module; 203, Adjustment module. Detailed Implementation

[0042] Hereinafter, exemplary embodiments according to this application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein.

[0043] Figure 1 This is a flowchart illustrating a dynamically adjustable magnetic field focusing method based on a phase-controlled current element array provided by an exemplary embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a current element array provided in an exemplary embodiment of the present invention. For example... Figures 1-2 As shown, the dynamically adjustable magnetic field focusing method based on phase-controlled current element array includes...

[0044] Step 110: Based on the target focusing position, perform phase calibration on each current element in the current element array to obtain the phase compensation value of each current element, wherein the current element array includes multiple current elements.

[0045] In this embodiment of the invention, in order to dynamically adjust the magnetic field focusing position of the current element array, a target focusing position is determined. Based on the target focusing position, phase calibration is performed on each current element in the current element array to obtain a phase compensation value for each current element. Through phase compensation, the magnetic field effects of different current elements can be coordinated, thereby achieving more effective focusing. Phase adjustment can optimize the interrelationship between current elements, making the magnetic fields they generate at the same point in time cooperate with each other, reducing interference and non-uniformity.

[0046] The current element array consists of M×N independently controllable amplitude and phase current elements (such as miniature coils), where M represents the number of rows and N represents the number of columns. The target focusing position is... , , , The focal points are in the global coordinate system. , , The coordinate values ​​along the axis.

[0047] Step 120: Determine the excitation signal for each current element based on the phase compensation value of each current element.

[0048] In this embodiment of the invention, an excitation signal for each current element is calculated based on the phase compensation value of each current element. This excitation signal can be represented as an excitation current, which can be expressed as... It means that among them For the excitation current amplitude, For the excitation current frequency, This is the phase compensation value. It is a natural constant. The unit is imaginary. Employing a dynamically adjustable phased array structure, by calculating the composite phase compensation in real time and optimizing the excitation current distribution, dynamic magnetic field focusing at any point in space can be achieved without mechanical structures, fundamentally eliminating the power consumption and reliability risks caused by complex mechanical movements. This overcomes the shortcomings of traditional magnetic field focusing technologies, such as fixed and unadjustable focal points, large mechanical response delays, and positioning inaccuracies caused by media interference, achieving dynamically adjustable tracking magnetic field focusing.

[0049] Step 130: Based on the phase compensation value of each current element and the excitation signal of each current element, dynamically adjust the phase term of each target point so that the adjusted magnetic field is focused on the target focusing position, wherein the target point is the target point in the magnetic field generated by the current element array.

[0050] In this embodiment of the invention, the phase term of the target point in the magnetic field generated by the current element array is dynamically adjusted by the phase compensation value of each current element and its corresponding excitation signal. Through phase compensation, the radiation fields of all current elements are superimposed in phase at the target focusing position to achieve focusing, and a wavefront distribution that appears as a virtual spherical wave is formed near the target focusing position.

[0051] Furthermore, when the target focus position changes to Repeat steps 110-130 to refocus the magnetic field based on the updated focus position. When the target focus position is a continuous trajectory... Set the update interval according to your needs. Repeat steps 110-130 to achieve dynamic focus control.

[0052] This application provides a dynamically adjustable magnetic field focusing method based on a phased-array current element, comprising: performing phase calibration on each current element in the current element array based on the target focusing position to obtain a phase compensation value for each current element, wherein the current element array includes multiple current elements; determining the excitation signal for each current element based on the phase compensation value; and dynamically adjusting the phase term of each target point based on the phase compensation value and the excitation signal of each current element, so that the adjusted magnetic field is focused at the target focusing position, wherein the target point is the target point in the magnetic field generated by the current element array. Addressing the need for precise control of spatial magnetic field distribution characteristics, a dynamic focusing algorithm is constructed based on electromagnetic wave interference theory and the principle of magnetic vector superposition. By adjusting the phase and amplitude of the excitation signal in real time, the array elements are driven to generate a coherent superimposed magnetic field, achieving dynamic focusing of high magnetic field energy at the target position.

[0053] In one embodiment, step 110 may be specifically implemented as follows: determining the working environment of the current element array; correcting the wavenumber in the working environment based on the permeability of the medium in the working environment and its corresponding dielectric constant to obtain the equivalent wavenumber; and performing phase calibration on each current element in the current element array based on the equivalent wavenumber and the target focusing position.

[0054] In this embodiment of the invention, the propagation speed of electromagnetic waves in different media is affected by the electromagnetic properties (dielectric constant and permeability) of the medium. Therefore, by correcting the wave number, the actual propagation speed of waves in a specific medium can be better reflected. This invention corrects the wave number in a vacuum using permeability and dielectric constant to adapt to different propagation media.

[0055] Specifically, the operating environment of the current element array is determined. The operating environment determines whether the electromagnetic wave transmission will be significantly affected by the medium corresponding to that environment. To improve the adaptability of the electromagnetic wave to different propagation media, this invention modifies the wavenumber of the electromagnetic wave from the current element array by adjusting the frequency of the excitation current of the current element array, the dielectric constant of the medium, and the permeability.

[0056] In one embodiment, step 110 may be specifically implemented as follows: determining the starting position of the current element array; determining the position of each current element in the current element array; and calibrating the phase of each current element in the current element array based on the target focusing position, the starting position of the current element array, the equivalent wavenumber, and the position of each current element in the current element array, so as to obtain the phase compensation value of each current element.

[0057] In this embodiment of the invention, the path difference between the current current element and the reference current element (the starting position of the current element array) to the target focusing position is calculated using the target focusing position, the starting position of the current element array, and the position of each current element in the current element array. This path difference is then converted into a phase delay; that is, for every increase of one wavelength λ in the distance difference, the phase lags by 2π radians. To compensate for the natural phase difference caused by the different paths, an opposite phase is applied to the phase delay. Based on this opposite phase, the fixed phase error caused by the current current element itself and its feeding path is then corrected.

[0058] Figure 3 This is a schematic diagram illustrating the process of a virtual spherical wave focused by a current element array, provided in an exemplary embodiment of the present invention. Figure 3 As shown, the formula for calculating the phase compensation value of each current element is:

[0059] ;in, For the equivalent wavenumber, The target focus position vector, The array's starting position vector. The position vector of the current element. This is for composite calibration phase.

[0060] In an embodiment of the present invention, Indicates from the first The position of each current element To the target focus position The straight-line distance. This represents the straight-line distance from the starting position of the current element array to the target focusing position. Indicates the first The difference between the distance from each current element to the target focusing position and the distance from the starting position of the current element array to the target focusing position. This difference represents the extra or less distance the wave emitted by the current element needs to travel to reach the target focusing position. According to wave theory, the distance a wave travels is... The resulting phase lag is (Radians). Therefore Indicates due to distance difference The phase difference that naturally occurs when the wave emitted by the current element reaches the target focusing position relative to the wave emitted at the starting position of the array.

[0061] To compensate for the natural phase difference caused by the different paths, an opposite phase needs to be applied to the current element. The negative sign indicates that the wave emitted by the current element needs to be advanced or delayed by a phase amount. In this way, the waves emitted by all current elements become identical in phase when they reach the target focusing position. However, in reality, manufacturing tolerances between different antenna elements result in inconsistencies in their radiation characteristics (such as initial phase). Alternatively, when one element is operating, its near-field can interfere with neighboring elements, altering their input impedance and radiation characteristics, thus introducing phase errors. Therefore, the phase values ​​obtained through pre-measurement or calculation are crucial. Correct the fixed phase error caused by the (n,m)th unit itself and its feed path.

[0062] In one embodiment, the formula for calculating the equivalent wavenumber is: ;in, The operating frequency of the excitation current signal. The permeability of the medium, is the equivalent dielectric constant of the medium.

[0063] In one embodiment, step 130 may be specifically implemented as follows: based on the phase compensation value of each current element and the excitation signal of each current element, determine whether the position of each target point is the target focusing position; if the position of the target point is the target focusing position, then the phase term of the target point is canceled; if the position of the target point is not the target focusing position, then the phase term of the target point is partially canceled.

[0064] In this embodiment of the invention, when the electromagnetic wave radiated by each unit propagates to any point in space... When, determine any point Is it the target focus location? If any point It is the target focus position ,but Become ,Will Substitution Therefore = ,therefore, = (All current elements at the focal point) (No phase difference), all current elements in The contributions are in phase, and the phase is constant. It is used to uniformly regulate the phase reference of all current elements and control the timing when each element reaches its peak simultaneously. With all current elements in phase, the magnetic fields are superimposed and enhanced, achieving focusing.

[0065] If any point Not the target focus position Then the phase term They cannot completely offset each other because This is for Optimized, not . ,but ,so It is not a constant, which causes different current elements to have different phases, deviating from the reference phase. The phases of each current element are dispersed, and the phase contributions of different current elements cancel each other out, thus weakening the magnetic field.

[0066] In one embodiment, the formula for calculating the dynamic adjustment phase term function of the target point is: ;in, For the equivalent wavenumber, The target focus position vector, The array's starting position vector. The position vector of the current element. This is for composite calibration phase. In this embodiment of the invention, the first... The amplitude of the excitation current of each current element and the pre-applied compensation phase Wave propagation to point The resulting spatial phase lag Multiply. This result. This represents the first A current element at point The magnetic field generated at that location.

[0067] in, This indicates the phase shift applied to the corresponding current element before the signal is transmitted. Describes the propagation of a wave in space to a point The phase introduced at that time.

[0068] In one embodiment, after step 130, the dynamically adjustable magnetic field focusing method based on the phased current element array can be specifically implemented as follows: calculate the total magnetic field based on each adjusted target point.

[0069] In this embodiment of the invention, the formula for calculating the total magnetic field is:

[0070] ;in, The magnetic field distribution of a single current element is calculated using the Biot-Savart law. The interference enhancement or suppression mode of the magnetic field in space is controlled by dynamically adjusting the phase term function at the target point. The formula for calculating the total magnetic field is divided into the physical field distribution. and control function .

[0071] Specifically, This describes the inherent physical properties of a single current element, including magnetic field decay with distance, phase delay, and directivity, adaptable to different array topologies. Through optimization... (i.e., design) , It can precisely control the "enhanced region" (focus) and "suppressed region" (non-focus) of the magnetic field in space.

[0072] Figure 4 This is a schematic diagram of a dynamically adjustable magnetic field focusing system based on a phase-controlled current element array, provided by an exemplary embodiment of the present invention. Figure 4As shown, the dynamically adjustable magnetic field focusing system based on a phased current element array includes: a phase calculation module 201, used to perform phase calibration on each current element in the current element array based on the target focusing position to obtain a phase compensation value for each current element; wherein, the current element array includes multiple current elements; a determination module 202, used to determine the excitation signal of each current element based on the phase compensation value of each current element; and an adjustment module 203, used to dynamically adjust the phase term of each target point based on the phase compensation value and the excitation signal of each current element, so that the adjusted magnetic field is focused on the target focusing position; wherein, the target point is the target point in the magnetic field generated by the current element array.

[0073] In one embodiment, the phase calculation module 201 may be specifically configured to: determine the working environment of the current element array; correct the wavenumber in the working environment based on the permeability of the medium in the working environment and its corresponding dielectric constant to obtain the equivalent wavenumber; and perform phase calibration on each current element in the current element array based on the equivalent wavenumber and the target focusing position.

[0074] In one embodiment, the phase calculation module 201 may be specifically configured to: determine the starting position of the current element array; determine the position of each current element in the current element array; and calibrate the phase of each current element in the current element array based on the target focusing position, the starting position of the current element array, the equivalent wavenumber, and the position of each current element in the current element array, so as to obtain the phase compensation value of each current element.

[0075] In one embodiment, the formula for calculating the phase compensation value of each current element is:

[0076] ;in, For the equivalent wavenumber, The target focus position vector, The array's starting position vector. The position vector of the current element. This is for composite calibration phase.

[0077] In one embodiment, the formula for calculating the equivalent wavenumber is: ;in, The operating frequency of the excitation current signal. The permeability of the medium, is the equivalent dielectric constant of the medium.

[0078] In one embodiment, the adjustment module 203 may be specifically configured to: determine whether the position of each target point is the target focusing position based on the phase compensation value of each current element and the excitation signal of each current element; if the position of the target point is the target focusing position, the phase term of the target point is canceled; if the position of the target point is not the target focusing position, the phase term of the target point is partially canceled.

[0079] In one embodiment, the formula for calculating the dynamic adjustment phase term function of the target point is: ;in, For the first The amplitude of the excitation current of each current element. For the equivalent wavenumber, For the first Phase compensation value of each current element, This is the position vector of the target point.

[0080] In one embodiment, after the adjustment module 203, the dynamically adjustable magnetic field focusing system based on the phase-controlled current element array can be specifically implemented as follows: the total magnetic field is calculated based on each adjusted target point.

[0081] In one embodiment, the formula for calculating the total magnetic field is:

[0082] ;in, The magnetic field distribution of a single current element is calculated using the Biot-Savart law. The mode of interference enhancement or suppression of the magnetic field in space is controlled by the dynamic adjustment of the phase term function at the target point.

[0083] Figure 5 The illustration shows a block diagram of an electronic device according to an embodiment of this application.

[0084] like Figure 5 As shown, the electronic device 10 includes one or more processors 11 and memory 12.

[0085] The processor 11 may be a central processing unit (CPU) or other form of processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.

[0086] The memory 12 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 11 may execute the program instructions to implement the dynamically adjustable magnetic field focusing method based on phase-controlled current element array of the various embodiments of this application described above, and / or other desired functions. Various contents such as input signals, signal components, and noise components may also be stored in the computer-readable storage medium.

[0087] In one example, the electronic device 10 may also include an input device 13 and an output device 14, which are interconnected via a bus system and / or other forms of connection mechanism (not shown).

[0088] When the electronic device 10 is a standalone device, the input device 13 can be a communication network connector for receiving the collected input signals from the first device and the second device.

[0089] In addition, the input device 13 may also include, for example, a keyboard, a mouse, etc.

[0090] The output device 14 can output various information to the outside, including determined distance information, direction information, etc. The output device 14 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0091] Of course, for the sake of simplicity, Figure 5 Only some of the components of the electronic device 10 relevant to this application are shown in this illustration; components such as buses, input / output interfaces, etc., are omitted. In addition, the electronic device 10 may include any other suitable components depending on the specific application.

[0092] The computer program product can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this application. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0093] The computer-readable storage medium may be any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0094] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A dynamically adjustable magnetic field focusing method based on a phase-controlled current element array, characterized in that, include: Based on the target focusing position, phase calibration is performed on each current element in the current element array to obtain the phase compensation value of each current element; wherein, the current element array includes multiple current elements; The excitation signal for each current element is determined based on the phase compensation value of each current element. Based on the phase compensation value of each current element and the excitation signal of each current element, the phase term of each target point is dynamically adjusted so that the adjusted magnetic field is focused on the target focusing position; wherein, the target point is the target point in the magnetic field generated by the current element array; The process of performing phase calibration on each current element in the current element array based on the target focusing position to obtain the phase compensation value for each current element includes the following steps: Determine the operating environment of the current element array; Based on the magnetic permeability of the medium in the working environment and its corresponding dielectric constant, the wavenumber in the working environment is corrected to obtain the equivalent wavenumber. Determine the starting position of the current element array; Determine the position of each current element in the current element array; Based on the target focusing position, the starting position of the current element array, the equivalent wavenumber, and the position of each current element in the current element array, the phase of each current element in the current element array is calibrated to obtain a phase compensation value for each current element; wherein, the current element array includes multiple current elements, and the formula for calculating the phase compensation value of each current element is: ;in, For the equivalent wavenumber, The target focus position vector, The array's starting position vector. The position vector of the current element. This is for composite calibration phase.

2. The dynamically adjustable magnetic field focusing method based on a phase-controlled current element array according to claim 1, characterized in that, The formula for calculating the equivalent wavenumber is: ;in, The operating frequency of the excitation current signal. The permeability of the medium, is the equivalent dielectric constant of the medium.

3. The dynamically adjustable magnetic field focusing method based on a phase-controlled current element array according to claim 1, characterized in that, The dynamic adjustment of the phase term at each target point based on the phase compensation value of each current element and the excitation signal of each current element includes: Based on the phase compensation value of each current element and the excitation signal of each current element, determine whether the position of each target point is the target focusing position; If the position of the target point is the target focus position, then the phase term of the target point is canceled out; If the position of the target point is not the target focus position, then the phase term of the target point is partially canceled out.

4. The dynamically adjustable magnetic field focusing method based on a phase-controlled current element array according to claim 3, characterized in that, The formula for calculating the dynamic adjustment phase term function of the target point is: ;in, For the first The amplitude of the excitation current of each current element. For the equivalent wavenumber, For the first Phase compensation value of each current element, This is the position vector of the target point.

5. The dynamically adjustable magnetic field focusing method based on a phase-controlled current element array according to claim 1, characterized in that, After dynamically adjusting the phase term of each target point based on the phase compensation value of each current element and the excitation signal of each current element, the method further includes: The total magnetic field is calculated based on each adjusted target point.

6. The dynamically adjustable magnetic field focusing method based on a phase-controlled current element array according to claim 5, characterized in that, The formula for calculating the total magnetic field is: ;in, The magnetic field distribution of a single current element is calculated using the Biot-Savart law. The mode of interference enhancement or suppression of the magnetic field in space is controlled by the dynamic adjustment of the phase term function at the target point.

7. A dynamically adjustable magnetic field focusing system based on a phase-controlled current element array, characterized in that, include: The phase calculation module is used to perform phase calibration on each current element in the current element array based on the target focusing position, so as to obtain the phase compensation value of each current element; wherein, the current element array includes multiple current elements; The determination module is used to determine the excitation signal of each current element based on the phase compensation value of each current element; An adjustment module is used to dynamically adjust the phase term of each target point based on the phase compensation value of each current element and the excitation signal of each current element, so that the adjusted magnetic field is focused on the target focusing position; wherein, the target point is the target point in the magnetic field generated by the current element array; The process of performing phase calibration on each current element in the current element array based on the target focusing position to obtain the phase compensation value of each current element includes the following steps: determining the working environment of the current element array; correcting the wavenumber in the working environment based on the permeability and corresponding permittivity of the medium to obtain the equivalent wavenumber; determining the starting position of the current element array; determining the position of each current element in the current element array; and calibrating the phase of each current element in the current element array based on the target focusing position, the starting position of the current element array, the equivalent wavenumber, and the position of each current element in the current element array to obtain the phase compensation value of each current element. The formula for calculating the phase compensation value of each current element is as follows: ;in, For the equivalent wavenumber, The target focus position vector, The array's starting position vector. The position vector of the current element. This is for composite calibration phase.

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