Method for measuring and calculating magnetic susceptibility of single particle of lunar soil

Abstract

The invention provides a lunar soil single particle magnetic susceptibility determination and calculation method, and relates to the technical field of lunar soil scientific research. A motion track image of a lunar soil single particle to be determined is obtained, and a magnetic field model corresponding to a preset magnetic field is established; and determining a plurality of infinitesimal intervals included in the motion trail of the to-be-measured lunar soil single particles according to the motion trail image of the to-be-measured lunar soil single particles, wherein each infinitesimal interval comprises an infinitesimal starting point, an infinitesimal ending point and a corresponding moment when the measured lunar soil single particles move to the infinitesimal starting point and the infinitesimal ending point. And based on the magnetic field model, determining the magnetic susceptibility of the to-be-measured lunar soil single particles according to the plurality of infinitesimal intervals included in the motion trail of the to-be-measured lunar soil single particles. According to the method provided by the invention, the single-particle magnetic susceptibility of the lunar soil can be rapidly and accurately measured, and compared with a measurement mode in the related technology, the test cost can be effectively reduced, and the test accuracy can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lunar soil scientific research, and in particular to a method for measuring and calculating the magnetic susceptibility of a single lunar soil particle. Background Art

[0002] Lunar soil is the direct target of lunar scientific research, and its magnetic properties are a crucial attribute. Currently, remote sensing methods only measure magnetic characteristics over large areas of the lunar surface, with low accuracy, failing to meet the microscopic needs of lunar research. Therefore, returning samples to Earth for magnetic property testing is the mainstream approach to lunar soil magnetic research.

[0003] At present, CN119619014A provides a microscopic imaging detection method for Fe3O4 nanoparticles based on left- and right-handed polarization modulation, which can realize the imaging of Fe3O4 nanoparticles, magnetization curve measurement and magnetic moment reversal process monitoring. However, this method requires the integration of multiple high-precision instruments and devices, and has the problem of high detection cost. In addition, the use of multiple high-precision instruments and devices requires the testers to have rich professional knowledge. The test results are easily affected by the professionalism of the testers, and there is a problem of poor accuracy.

[0004] CN112098505A provides a method for determining the magnetic iron content of tailings using the principle of magnetic susceptibility. A standard curve is established between tailings samples with known magnetic iron grade and magnetic susceptibility values. The magnetic susceptibility of the unknown tailings sample is then detected. The magnetic iron content of the unknown tailings can be calculated based on the equation corresponding to the standard curve. However, this method requires a large number of samples and is not suitable for testing rare samples such as lunar soil.

[0005] To sum up, the relevant technology still has limitations in many aspects, including the large number of high-precision instruments and devices required for testing, high testing costs, test results affected by the professionalism of testers, resulting in poor accuracy, and a large number of samples required for testing, which makes it unsuitable for testing rare samples such as lunar soil. Summary of the Invention

[0006] The present invention provides a method for measuring and calculating the magnetic susceptibility of a single lunar soil particle. This method enables rapid and accurate measurement of the magnetic susceptibility of a single lunar soil particle. Compared to conventional methods, this method significantly reduces testing costs and improves accuracy. Furthermore, it significantly reduces the sample volume required during testing, enabling the testing of rare samples such as lunar soil.

[0007] To achieve the above objectives, the embodiments of the present invention adopt the following technical solutions: In a first aspect, a method for measuring and calculating the magnetic susceptibility of a single lunar soil particle is provided, the method comprising: obtaining a motion trajectory image of a single lunar soil particle to be measured, the motion trajectory image being an image acquired by a high-speed camera after the single lunar soil particle to be measured is released without initial velocity at a preset position in a vacuum chamber through an anti-static release mechanism, and a preset magnetic field is provided in the vacuum chamber; establishing a magnetic field model corresponding to the preset magnetic field, the magnetic field model being used to characterize the three-dimensional magnetic field intensity components of the preset magnetic field at any position, the three-dimensional magnetic field intensity components including a magnetic field intensity component in the X direction, a magnetic field intensity component in the Y direction, and a magnetic field intensity component in the Z direction, wherein the Y direction is the horizontal direction of a normal plane of a line of sight path of the high-speed camera, and the Z direction is the direction of gravity acting on the single lunar soil particle; determining, based on the motion trajectory image of the single lunar soil particle to be measured, a plurality of microelement intervals included in the motion trajectory of the single lunar soil particle to be measured, each microelement interval including a microelement starting point and a microelement end point, and the time corresponding to the measured movement of the single lunar soil particle to the microelement starting point and the microelement end point; and determining, based on the magnetic field model, the magnetic susceptibility of the single lunar soil particle to be measured based on the plurality of microelement intervals included in the motion trajectory of the single lunar soil particle to be measured.

[0008] The present invention provides the following beneficial effects: The method provided herein acquires an image of the motion trajectory of a single lunar soil particle to be measured within a vacuum chamber with a preset magnetic field, then establishes a magnetic field model corresponding to the preset magnetic field. The acceleration of the single lunar soil particle to be measured within each of the multiple microelement intervals included in the trajectory of the single lunar soil particle is then determined. Finally, the magnetic susceptibility of the single lunar soil particle is determined based on the magnetic field model. This process enables a relatively systematic and comprehensive determination of the magnetic susceptibility of a single lunar soil particle. This method provides a new and simple approach to studying the magnetic characteristics of lunar soil, contributing to a deeper understanding of its material composition and structure. By measuring the magnetic susceptibility of single lunar soil particles, it can provide critical data support for lunar science research, fill gaps in single-particle magnetic susceptibility determination in related research fields, and enhance the accuracy and depth of research into lunar material properties. In other words, the method provided herein enables rapid and accurate determination of the magnetic susceptibility of single lunar soil particles, effectively reducing testing costs and improving accuracy compared to related measurement methods. Furthermore, it can effectively reduce the sample volume required during testing, meeting the requirements for testing rare samples such as lunar soil and asteroids.

[0009] In a possible implementation of the first aspect, for any microelement interval, the position change of the microelement starting point and the microelement end point in the Y direction is greater than or equal to 1 mm and less than or equal to 2 mm, and the position change of the microelement starting point and the microelement end point in the Z direction is less than or equal to 3 mm.

[0010] The method provided by the present invention helps to improve the accuracy of measuring the magnetic susceptibility of single lunar soil particles by limiting the position change in the Y direction and the position change in the Z direction of the micro-element starting point and the micro-element end point included in each micro-element interval. The appropriate micro-element interval size can capture the changing characteristics of the motion trajectory of single lunar soil particles in more detail while ensuring a relatively reasonable amount of calculation. If the micro-element interval is too large, some motion details may be ignored, resulting in increased calculation errors; and if the micro-element interval is too small, the amount of calculation will increase significantly, and more uncertainties may be introduced due to problems such as data fluctuations. The micro-element interval range provided by the present invention finds a good balance between accuracy and computational efficiency, laying the foundation for the subsequent accurate calculation of the acceleration and magnetic susceptibility of single lunar soil particles based on the micro-element interval, thereby improving the reliability and practicality of the entire measurement method.

[0011] In a possible implementation of the first aspect, when the magnetic susceptibility of a single lunar soil particle to be measured is the mass magnetic susceptibility, the magnetic susceptibility of the single lunar soil particle to be measured is determined based on a magnetic field model according to a plurality of infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured, including: determining the acceleration corresponding to each infinitesimal interval according to the infinitesimal starting point, the infinitesimal end point and the corresponding moments when the measured single lunar soil particle moves to the infinitesimal starting point and the infinitesimal end point in each infinitesimal interval; determining the mass magnetic susceptibility of each infinitesimal interval according to the acceleration corresponding to each infinitesimal interval, the three-dimensional magnetic field intensity component corresponding to the target point of each infinitesimal interval and the rate of change of the single lunar soil particle to be measured in the Y direction, the target point being the midpoint between the infinitesimal starting point and the infinitesimal end point; and determining the average value of the mass magnetic susceptibility corresponding to each infinitesimal interval in the plurality of infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured as the magnetic susceptibility of the single lunar soil particle to be measured.

[0012] The method provided by this invention determines acceleration based on the starting and ending points of a micro-interval and the corresponding time. It then combines the three-dimensional magnetic field intensity components at the target point (the midpoint of the micro-interval) to determine the mass magnetic susceptibility of each micro-interval. Finally, the average of these mass magnetic susceptibilities is taken as the magnetic susceptibility of a single lunar soil particle. This calculation method, based on the physics principle of the interaction between the motion of an object and the magnetic field, solves the mass magnetic susceptibility through a detailed analysis of the motion of a single lunar soil particle. Determining the acceleration provides insight into the changing forces acting on a single lunar soil particle in a magnetic field. Combined with the magnetic field intensity components, the mass magnetic susceptibility of each micro-interval can be accurately calculated. The averaging method effectively reduces measurement error and improves the accuracy of the results. This method provides a concrete and feasible procedure for accurately measuring the mass magnetic susceptibility of a single lunar soil particle, enabling rapid and accurate determination of the magnetic susceptibility of the single lunar soil particle to be measured.

[0013] In a possible implementation of the first aspect, the mass magnetic susceptibility X of a single lunar soil particle to be measured is m The formula for determining is: ; Among them, a is the acceleration corresponding to each infinitesimal interval, μ0 is the vacuum permeability, is the magnetic field intensity component of the target point in the X direction, H y is the magnetic field intensity component of the target point in the Y direction, H z is the magnetic field intensity component of the target point in the Z direction; H x The rate of change in the Y direction, H y The rate of change in the Y direction, H z The rate of change in the Y direction.

[0014] The method provided by this paper establishes a formula for determining mass magnetic susceptibility based on the fundamental principles of electromagnetism and kinematics, making the calculation of mass magnetic susceptibility scientific and accurate. In practical applications, researchers can substitute measured data such as acceleration and magnetic field strength into the formula to accurately calculate the mass magnetic susceptibility of a single lunar soil particle. This formula provides a precise mathematical tool for quantitatively calculating the mass magnetic susceptibility of a single lunar soil particle, helping to advance the study of lunar material magnetism from qualitative description to quantitative analysis, thereby enhancing the depth and precision of research.

[0015] In a possible implementation of the first aspect, when the magnetic susceptibility of a single lunar soil particle to be measured is a volume magnetic susceptibility, the magnetic susceptibility of the single lunar soil particle to be measured is determined based on a magnetic field model according to a plurality of infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured, including: obtaining the density of the single lunar soil particle to be measured; determining the acceleration corresponding to each infinitesimal interval according to each infinitesimal interval including a infinitesimal starting point, a infinitesimal end point, and the time corresponding to the movement of the measured single lunar soil particle to the infinitesimal starting point and the infinitesimal end point; determining the volume magnetic susceptibility of each infinitesimal interval according to the density of the single lunar soil particle to be measured, the acceleration corresponding to each infinitesimal interval, the three-dimensional magnetic field intensity component corresponding to the target point of each infinitesimal interval, and the rate of change of the single lunar soil particle to be measured in the Y direction, the target point being the midpoint between the infinitesimal starting point and the infinitesimal end point; and determining the average value of the volume magnetic susceptibility corresponding to each infinitesimal interval in the plurality of infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured as the magnetic susceptibility of the single lunar soil particle to be measured.

[0016] The method provided by the present invention is aimed at the case where the magnetic susceptibility of a single lunar soil particle to be measured is the volume magnetic susceptibility. First, the density of the single lunar soil particle is obtained. Then, the acceleration is determined based on the microelement interval information. Then, the volume magnetic susceptibility of each microelement interval is determined by combining the density, acceleration, and the three-dimensional magnetic field intensity components of the target point. Finally, the average value is taken to obtain the volume magnetic susceptibility of the single lunar soil particle. This process fully considers the relationship between the volume magnetic susceptibility and the density of the material, as well as the state of motion and the magnetic field. The method provided by the present invention provides a complete operational process for measuring the volume magnetic susceptibility of a single lunar soil particle, which helps researchers obtain the magnetic characteristics of the lunar soil at the volume level and plays an important role in gaining a deeper understanding of the material composition and magnetic distribution of the lunar soil.

[0017] In a possible implementation of the first aspect, the formula for determining the volume magnetic susceptibility X of a single lunar soil particle to be measured is: ; Where ρ is the density of a single lunar soil particle to be measured; a is the acceleration corresponding to each infinitesimal interval; μ0 is the vacuum permeability. is the magnetic field intensity component of the target point in the X direction, H y is the magnetic field intensity component of the target point in the Y direction, H z is the magnetic field intensity component of the target point in the Z direction; H x The rate of change in the Y direction, H y The rate of change in the Y direction, H z The rate of change in the Y direction.

[0018] The method provided by this invention establishes a formula for determining volume magnetic susceptibility based on the fundamental principles of electromagnetism and kinematics, making the calculation of volume magnetic susceptibility scientific and accurate. In practical applications, researchers can accurately calculate the volume magnetic susceptibility of a single lunar soil grain by substituting measured data such as density, acceleration, and magnetic field strength into the formula. This formula provides a precise mathematical tool for quantitatively calculating the volume magnetic susceptibility of a single lunar soil grain, helping to advance the study of lunar material magnetism from qualitative description to quantitative analysis, thereby enhancing the depth and precision of research.

[0019] In a possible implementation of the first aspect, before obtaining the motion trajectory image of a single lunar soil particle to be measured, the above method also includes: determining a preset position based on the magnetic field strength of a preset magnetic field, so that the position change in the Y direction per unit time of the motion trajectory of the single lunar soil particle to be measured is greater than a preset threshold.

[0020] The method provided by the present invention adds a step of determining a preset position based on the magnetic field strength of a preset magnetic field before obtaining the motion trajectory image of the single lunar soil particle to be measured, with the aim of making the position change in the Y direction per unit time of the motion trajectory of the single lunar soil particle greater than a preset threshold. Doing so can ensure that the single lunar soil particle has a relatively obvious and observable motion trajectory change in the magnetic field. If the position change in the Y direction of the single lunar soil particle is too small, it may make it difficult for a high-speed camera to accurately capture its motion trajectory, or produce large errors when analyzing the motion trajectory. By reasonably determining the preset position, the movement of the single lunar soil particle in the magnetic field can meet the requirements of subsequent image acquisition and analysis, providing a prerequisite for accurately measuring the magnetic susceptibility of the single lunar soil particle. This step optimizes the process of the entire measurement method, improves the reliability and effectiveness of the measurement process, and helps to obtain more accurate magnetic susceptibility data of single lunar soil particles, thereby improving the quality of magnetic research on lunar materials.

[0021] In the second aspect, the present invention provides a system for measuring and calculating the magnetic susceptibility of a single lunar soil particle, the system comprising: an image acquisition module for acquiring a motion trajectory image of a single lunar soil particle to be measured, the motion trajectory image being an image acquired by a high-speed camera after the single lunar soil particle to be measured is released without initial velocity at a preset position in a vacuum chamber through an anti-static release mechanism, and a preset magnetic field is provided in the vacuum chamber; a model establishment module for establishing a magnetic field model corresponding to the preset magnetic field, the magnetic field model being used to characterize the three-dimensional magnetic field intensity components of the preset magnetic field at any position, the three-dimensional magnetic field intensity components including the magnetic field intensity components in the X direction and the magnetic field intensity in the Y direction. The magnetic field intensity component in the Y direction and the Z direction, wherein the Y direction is the horizontal direction of the normal plane of the high-speed camera's line of sight path, and the Z direction is the direction of gravity on the single lunar soil particle; an interval determination module is used to determine the multiple microelement intervals included in the motion trajectory of the single lunar soil particle to be measured according to the motion trajectory image of the single lunar soil particle to be measured, each microelement interval includes a microelement starting point and a microelement end point and the time corresponding to the measured single lunar soil particle moving to the microelement starting point and the microelement end point; a magnetic susceptibility measurement module is used to determine the magnetic susceptibility of the single lunar soil particle to be measured based on the magnetic field model and the multiple microelement intervals included in the motion trajectory of the single lunar soil particle to be measured.

[0022] In a third aspect, the present invention provides a device for measuring and calculating the magnetic susceptibility of a single lunar soil particle, the device comprising: a vacuum chamber for providing a vacuum environment for the movement of a single lunar soil particle to be measured; a particle release mechanism arranged in the vacuum chamber, for eliminating the static electricity carried by the single lunar soil particle to be measured, and then controlling the single lunar soil particle to be measured to be released at a preset position with an initial velocity of 0; a magnet array arranged in the vacuum chamber, for providing a preset magnetic field; a high-speed camera, for obtaining a motion trajectory image of the single lunar soil particle to be measured in a plane with the line of sight of the high-speed camera as the normal after the single lunar soil particle to be measured is released by the particle release mechanism, and sending the motion trajectory image to a processor; a processor, for receiving the motion trajectory image, and determining the magnetic susceptibility of the single lunar soil particle to be measured based on the motion trajectory image.

[0023] In a fourth aspect, an electronic device is provided, comprising a memory and one or more processors; the memory is coupled to the processor; wherein computer program code is stored in the memory, and the computer program code comprises computer instructions, and when the computer instructions are executed by the processor, the electronic device executes a method as in any implementation of the first aspect.

[0024] In a fifth aspect, a computer-readable storage medium is provided, comprising computer instructions. When the computer instructions are executed on an electronic device, the electronic device executes the method in any implementation of the first aspect.

[0025] According to a sixth aspect, a computer program product is provided. When the computer program product is run on a computer, the computer is caused to execute the method in any implementation of the first aspect.

[0026] It can be understood that the beneficial effects that can be achieved by the system of the second aspect, the device of the third aspect, the electronic device of the fourth aspect, the computer-readable storage medium of the fifth aspect, and the computer program product of the sixth aspect provided above can be referred to the beneficial effects of the first aspect and any possible design method thereof, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of an electronic device provided by an embodiment of the present invention; Figure 2 A flow chart of a method for measuring and calculating the magnetic susceptibility of a single particle of lunar soil provided in an embodiment of the present invention; Figure 3 A flow chart of another method for measuring and calculating the magnetic susceptibility of a single lunar soil particle provided by an embodiment of the present invention; Figure 4 A flow chart of another method for measuring and calculating the magnetic susceptibility of a single lunar soil particle provided in an embodiment of the present invention; Figure 5A schematic structural diagram of a measurement system provided by an embodiment of the present invention; Figure 6 A schematic diagram of the structure of a device for measuring and calculating the magnetic susceptibility of a single particle of lunar soil provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. In the description of the present invention, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship. For example, A / B can represent A or B. The "or" in the present invention is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A or B can represent: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural. In addition, in the description of the present invention, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single or plural items.

[0029] In addition, to facilitate a clear description of the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that the words "first" and "second" do not limit the quantity or execution order, and the words "first" and "second" do not necessarily mean different.

[0030] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as superior or more advantageous than other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner to facilitate understanding.

[0031] Lunar soil is the direct target of lunar scientific research, and its magnetic properties are a crucial attribute. Currently, remote sensing methods only measure magnetic characteristics over large areas of the lunar surface, with low accuracy, failing to meet the microscopic needs of lunar research. Therefore, returning samples to Earth for magnetic property testing is the mainstream approach to lunar soil magnetic research.

[0032] At present, CN119619014A provides a microscopic imaging detection method for Fe3O4 nanoparticles based on left- and right-handed polarization modulation, which can realize the imaging of Fe3O4 nanoparticles, magnetization curve measurement and magnetic moment reversal process monitoring. However, this method requires the integration of multiple high-precision instruments and devices, and has the problem of high detection cost. In addition, the use of multiple high-precision instruments and devices requires the testers to have rich professional knowledge. The test results are easily affected by the professionalism of the testers, and there is a problem of poor accuracy.

[0033] CN112098505A provides a method for determining the magnetic iron content of tailings using the principle of magnetic susceptibility. A standard curve is established between tailings samples with known magnetic iron grade and magnetic susceptibility values. The magnetic susceptibility of the unknown tailings sample is then detected. The magnetic iron content of the unknown tailings can be calculated based on the equation corresponding to the standard curve. However, this method requires a large number of samples and is not suitable for testing rare samples such as lunar soil.

[0034] In summary, the relevant technology still has limitations in many aspects, including the large number of high-precision instruments and devices required for testing, high testing costs, test results affected by the professionalism of testers, resulting in poor accuracy, and a large number of samples required for testing, which makes it unsuitable for testing rare samples such as lunar soil.

[0035] In view of this, an embodiment of the present invention provides a method for measuring and calculating the magnetic susceptibility of a single lunar soil particle. The method comprises: obtaining a motion trajectory image of the single lunar soil particle to be measured, the motion trajectory image being an image captured by a high-speed camera after the single lunar soil particle to be measured is released without initial velocity at a preset position within a vacuum chamber via an anti-static release mechanism, wherein a preset magnetic field is provided within the vacuum chamber. A magnetic field model corresponding to the preset magnetic field is established, the magnetic field model being used to characterize the three-dimensional magnetic field intensity components of the preset magnetic field at any position, the three-dimensional magnetic field intensity components including the magnetic field intensity components in the X direction, the magnetic field intensity components in the Y direction, and the magnetic field intensity components in the Z direction, wherein the Y direction is the horizontal direction of the plane normal to the line of sight of the high-speed camera, and the Z direction is the direction of gravity acting on the single lunar soil particle. Based on the motion trajectory image of the single lunar soil particle to be measured, multiple microelement intervals included in the motion trajectory of the single lunar soil particle to be measured are determined, each microelement interval including a microelement starting point and a microelement end point, as well as the times corresponding to the measured movement of the single lunar soil particle to the microelement starting point and the microelement end point. Based on the magnetic field model, the magnetic susceptibility of the single lunar soil particle to be measured is determined according to the multiple infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured.

[0036] The method provided by an embodiment of the present invention obtains an image of the motion trajectory of a single lunar soil particle to be measured within a vacuum chamber with a preset magnetic field, then establishes a magnetic field model corresponding to the preset magnetic field. The acceleration of the single lunar soil particle to be measured within each of the multiple microelement intervals included in the trajectory of the single lunar soil particle is then determined. Finally, the magnetic susceptibility of the single lunar soil particle is determined based on the magnetic field model. This process enables a relatively systematic and comprehensive determination of the magnetic susceptibility of a single lunar soil particle. This method provides a new and simple approach to studying the magnetic characteristics of lunar soil, facilitating a deeper understanding of its material composition and structure. By measuring the magnetic susceptibility of single lunar soil particles, it can provide critical data support for lunar science research, fill gaps in single-particle magnetic susceptibility determination in related research fields, and enhance the accuracy and depth of research into lunar material properties. In other words, the method provided by the present invention enables rapid and accurate determination of the magnetic susceptibility of single lunar soil particles, effectively reducing testing costs and improving accuracy compared to related measurement methods. Furthermore, it can effectively reduce the sample volume required during testing, meeting the requirements for testing rare samples such as lunar soil and asteroids.

[0037] In some embodiments, a method for measuring and calculating the magnetic susceptibility of a single lunar soil particle provided by an embodiment of the present invention can be performed by a system 100 for measuring and calculating the magnetic susceptibility of a single lunar soil particle (hereinafter referred to as measurement system 100 ).

[0038] As an example, the measurement system 100 may be any electronic device 200 with data processing capabilities, such as a general-purpose computer, a personal computer, a laptop computer, a switch, or a tablet computer. The specific implementation of the measurement system 100 is not limited here.

[0039] Figure 1 The electronic device 200 includes a processor 210 , a memory 220 , and a communication interface 230 .

[0040] The processor 210 may include one or more processing cores. The processor 210 connects to various components within the electronic device 200 using various interfaces and circuits. It executes instructions, programs, code sets, or instruction sets stored in the memory 220, and calls data stored in the memory 220 to perform various functions of the electronic device 200 and process data. Optionally, the processor 210 may be implemented in the form of at least one of a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processing unit (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA).

[0041] The memory 220 may include random access memory (RAM) or read-only memory (ROL). Optionally, the memory 220 includes non-transitory computer-readable storage media (NTM). The memory 220 may be used to store instructions, programs, codes, code sets, or instruction sets. The memory 220 may include a program storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (such as an image acquisition function, a model building function, and a magnetic susceptibility measurement function), and instructions for implementing each of the aforementioned method embodiments.

[0042] The communication interface 230 is used to communicate with other devices, equipment or communication networks, such as data storage devices, image processing equipment or Ethernet, radio access network (RAN), wireless local area network (WLAN), etc.

[0043] In physical implementation, the aforementioned components (e.g., processor 210, memory 220, and communication interface 230) may be components within the same device (e.g., a laptop). Alternatively, at least two of these components may be provided within the same device, i.e., as different components within the same device, similar to the deployment of devices or components in a distributed system.

[0044] It should be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device 200. In other embodiments of the present invention, the electronic device 200 may include more or fewer components than shown, or may combine or separate certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0045] The following describes a method for measuring and calculating the magnetic susceptibility of a single particle of lunar soil provided by an embodiment of the present invention in conjunction with the accompanying drawings.

[0046] Figure 2 Flowchart of a method for measuring and calculating the magnetic susceptibility of a single lunar soil particle provided by an embodiment of the present invention. Optionally, the method can be Figure 1 The electronic device 200 shown in FIG. 10 is executed. The method may include the following steps: S1. Obtain the motion trajectory image of a single particle of lunar soil to be measured.

[0047] The motion trajectory image is an image obtained by a high-speed camera after a single particle of lunar soil to be measured is released without initial velocity at a preset position in a vacuum chamber through an anti-static release mechanism, and a preset magnetic field is set in the vacuum chamber.

[0048] It should be noted that the motion trajectory image includes multiple images of the single lunar soil particle to be measured taken by a high-speed camera during its movement, and each image is used to record the single lunar soil particle to be measured at the current moment (or the position corresponding to the frame number).

[0049] Specifically, first, a magnetic field is set up in the vacuum chamber. The single lunar soil particle to be measured is fixed by an anti-static release mechanism and released without initial velocity at a preset position. The single lunar soil particle to be measured moves under the action of high vacuum and magnetic field. The high-speed camera outside the vacuum chamber synchronously records the motion trajectory of the single lunar soil particle to be measured with the assistance of a fill light, and obtains an image of the motion trajectory of the single lunar soil particle to be measured. Finally, the single lunar soil particle to be measured is recovered by a particle recovery device arranged below. Among them, using the vacuum chamber to obtain the motion trajectory of the single lunar soil particle to be measured under high vacuum conditions can eliminate the interference of air drag. The anti-static release mechanism is designed to eliminate static electricity, which can eliminate the influence of static electricity on the motion of the single lunar soil particle to be measured. The high-speed camera can record the motion state and trajectory of the single lunar soil particle to be measured with high precision.

[0050] In a possible implementation, before the above S1, the method provided by the embodiment of the present invention further includes: The preset position is determined according to the magnetic field strength of the preset magnetic field so that the position change in the Y direction per unit time of the motion trajectory of a single lunar soil particle to be measured is greater than a preset threshold.

[0051] In one example, the preset threshold is 0.5 mm / s.

[0052] Specifically, the preset position (release position) of the single lunar soil particle to be measured is not fixed. The release position of the single lunar soil particle to be measured can be adjusted according to the magnetic strength of the preset magnetic field to increase the trajectory offset to facilitate trajectory tracking and accurate identification of the particle position. The magnetic field strength increases exponentially near the magnet. For weakly magnetic particles, placing them closer to the magnet is conducive to obtaining a trajectory with a more obvious offset, thereby improving the accuracy and reliability of the measurement results.

[0053] The method provided by the present invention adds a step of determining a preset position based on the magnetic field strength of a preset magnetic field before obtaining the motion trajectory image of the single lunar soil particle to be measured, with the aim of making the position change in the Y direction per unit time of the motion trajectory of the single lunar soil particle greater than a preset threshold. Doing so can ensure that the single lunar soil particle has a relatively obvious and observable motion trajectory change in the magnetic field. If the position change in the Y direction of the single lunar soil particle is too small, it may make it difficult for a high-speed camera to accurately capture its motion trajectory, or produce large errors when analyzing the motion trajectory. By reasonably determining the preset position, the movement of the single lunar soil particle in the magnetic field can meet the requirements of subsequent image acquisition and analysis, providing a prerequisite for accurately measuring the magnetic susceptibility of the single lunar soil particle. This step optimizes the process of the entire measurement method, improves the reliability and effectiveness of the measurement process, and helps to obtain more accurate magnetic susceptibility data of single lunar soil particles, thereby improving the quality of magnetic research on lunar materials.

[0054] S2. Establish a magnetic field model corresponding to the preset magnetic field, where the magnetic field model is used to characterize the three-dimensional magnetic field intensity components of the preset magnetic field at any position.

[0055] Among them, the three-dimensional magnetic field intensity components include the magnetic field intensity component in the X direction, the magnetic field intensity component in the Y direction, and the magnetic field intensity component in the Z direction, among which the Y direction is the horizontal direction of the normal plane of the high-speed camera's line of sight path, and the Z direction is the direction of gravity on a single particle of lunar soil.

[0056] Furthermore, the Z direction is perpendicular to the plane normal to the high-speed camera's line of sight. The X direction is the spatial coordinate axis perpendicular to both the Y and Z directions, and satisfies the right-hand coordinate system rule. That is, the X direction is perpendicular to both the Y and Z directions, and the X, Y, and Z directions form a three-dimensional orthogonal spatial coordinate system.

[0057] S3. Determine multiple microelement intervals included in the motion trajectory of the single lunar soil particle to be measured based on the motion trajectory image of the single lunar soil particle to be measured, each microelement interval includes a microelement starting point and a microelement end point, and the time corresponding to the measured single lunar soil particle moving to the microelement starting point and the microelement end point.

[0058] In one possible implementation, for any microelement interval, the position change between the microelement starting point and the microelement end point in the Y direction is greater than or equal to 1 mm and less than or equal to 2 mm, and the position change between the microelement starting point and the microelement end point in the Z direction is less than or equal to 3 mm.

[0059] Specifically, the measurement system determines a microelement interval based on the motion trajectory image, including two of the multiple images (for example, the first image and the second image) taken by a high-speed camera during the movement of the single lunar soil particle to be measured. When the shooting time of the first image is before the shooting time of the second image, the position of the single lunar soil particle to be measured in the first image is the microelement starting point, and the position of the single lunar soil particle to be measured in the second image is the microelement end point.

[0060] It should be noted that the above value ranges of the position changes of the infinitesimal starting point and the infinitesimal end point in the Y direction and the position changes of the infinitesimal starting point and the infinitesimal end point in the Z direction are only exemplary. Researchers can flexibly set the value ranges of the position changes of the infinitesimal starting point and the infinitesimal end point in the Y direction and the position changes of the infinitesimal starting point and the infinitesimal end point in the Z direction according to actual usage scenarios, and the embodiments of the present invention do not impose any special restrictions on this.

[0061] The method provided by the present invention helps to improve the accuracy of measuring the magnetic susceptibility of single lunar soil particles by limiting the position change in the Y direction and the position change in the Z direction of the micro-element starting point and the micro-element end point included in each micro-element interval. The appropriate micro-element interval size can capture the changing characteristics of the motion trajectory of single lunar soil particles in more detail while ensuring a relatively reasonable amount of calculation. If the micro-element interval is too large, some motion details may be ignored, resulting in increased calculation errors. If the micro-element interval is too small, the amount of calculation will increase significantly, and more uncertainties may be introduced due to problems such as data fluctuations. The micro-element interval range provided by the present invention finds a good balance between accuracy and computational efficiency, laying the foundation for the subsequent accurate calculation of the acceleration and magnetic susceptibility of single lunar soil particles based on the micro-element interval, thereby improving the reliability and practicality of the entire measurement method.

[0062] S4. Based on the magnetic field model, determine the magnetic susceptibility of the single lunar soil particle to be measured according to the multiple infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured.

[0063] In some embodiments, when the magnetic susceptibility of a single lunar soil particle to be measured is the mass magnetic susceptibility, see Figure 3 , the above S4, including: S411. Determine the acceleration corresponding to each microelement interval based on each microelement interval including the microelement starting point, the microelement end point, and the measured time corresponding to the movement of a single lunar soil particle to the microelement starting point and the microelement end point.

[0064] S412. Determine the mass magnetic susceptibility of each microelement interval based on the acceleration corresponding to each microelement interval, the three-dimensional magnetic field intensity component corresponding to the target point of each microelement interval, and the rate of change of the single lunar soil particle to be measured in the Y direction. The target point is the midpoint between the microelement starting point and the microelement end point.

[0065] S413. Determine the average value of the mass magnetic susceptibility corresponding to each of the multiple infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured as the magnetic susceptibility of the single lunar soil particle to be measured.

[0066] Furthermore, the mass magnetic susceptibility X of the lunar soil single particle to be measured m The formula for determining is: .

[0067] Among them, a is the acceleration corresponding to each infinitesimal interval, μ0 is the vacuum permeability, is the magnetic field intensity component of the target point in the X direction, H y is the magnetic field intensity component of the target point in the Y direction, H z is the magnetic field intensity component of the target point in the Z direction. H x The rate of change in the Y direction, H y The rate of change in the Y direction, H z The rate of change in the Y direction.

[0068] The method provided by this invention determines acceleration based on the starting and ending points of a micro-interval and the corresponding time. It then combines the three-dimensional magnetic field intensity components at the target point (the midpoint of the micro-interval) to determine the mass magnetic susceptibility of each micro-interval. Finally, the average of these mass magnetic susceptibilities is taken as the magnetic susceptibility of a single lunar soil particle. This calculation method, based on the physics principle of the interaction between the motion of an object and the magnetic field, solves the mass magnetic susceptibility through a detailed analysis of the motion of a single lunar soil particle. Determining the acceleration provides insight into the changing forces acting on a single lunar soil particle in a magnetic field. Combined with the magnetic field intensity components, the mass magnetic susceptibility of each micro-interval can be accurately calculated. The averaging method effectively reduces measurement error and improves the accuracy of the results. This method provides a concrete and feasible procedure for accurately measuring the mass magnetic susceptibility of a single lunar soil particle, enabling rapid and accurate determination of the magnetic susceptibility of the single lunar soil particle to be measured.

[0069] In other embodiments, when the magnetic susceptibility of a single lunar soil particle to be measured is the volume magnetic susceptibility, see Figure 4 , the above S4, including: S421. Obtain the density of a single particle of lunar soil to be measured.

[0070] S422. Determine the acceleration corresponding to each micro-element interval based on each micro-element interval including the micro-element starting point, the micro-element end point, and the measured time corresponding to the movement of a single lunar soil particle to the micro-element starting point and the micro-element end point.

[0071] S423. Determine the volume magnetic susceptibility of each micro-element interval based on the density of the single lunar soil particle to be measured, the acceleration corresponding to each micro-element interval, the three-dimensional magnetic field intensity component corresponding to the target point of each micro-element interval, and the rate of change of the single lunar soil particle to be measured in the Y direction. The target point is the midpoint between the micro-element starting point and the micro-element end point.

[0072] S424. Determine the average value of the volume magnetic susceptibility corresponding to each of the multiple infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured as the magnetic susceptibility of the single lunar soil particle to be measured.

[0073] Furthermore, the formula for determining the volume magnetic susceptibility X of a single lunar soil particle to be measured is: .

[0074] Where ρ is the density of a single lunar soil particle to be measured. a is the acceleration corresponding to each infinitesimal interval, μ0 is the vacuum permeability, is the magnetic field intensity component of the target point in the X direction, H y is the magnetic field intensity component of the target point in the Y direction, H z is the magnetic field intensity component of the target point in the Z direction. H x The rate of change in the Y direction, H y The rate of change in the Y direction, H z The rate of change in the Y direction.

[0075] The method provided by the present invention is aimed at the case where the magnetic susceptibility of a single lunar soil particle to be measured is the volume magnetic susceptibility. First, the density of the single lunar soil particle is obtained. Then, the acceleration is determined based on the microelement interval information. Then, the volume magnetic susceptibility of each microelement interval is determined by combining the density, acceleration, and the three-dimensional magnetic field intensity components of the target point. Finally, the average value is taken to obtain the volume magnetic susceptibility of the single lunar soil particle. This process fully considers the relationship between the volume magnetic susceptibility and the density of the material, as well as the state of motion and the magnetic field. The method provided by the present invention provides a complete operational process for measuring the volume magnetic susceptibility of a single lunar soil particle, which helps researchers obtain the magnetic characteristics of the lunar soil at the volume level and plays an important role in gaining a deeper understanding of the material composition and magnetic distribution of the lunar soil.

[0076] To facilitate understanding of this solution, the following is an example to explain the process of determining the magnetic susceptibility of a single particle of lunar soil provided by an embodiment of the present invention.

[0077] In one example, during the motion of a single lunar soil particle to be measured, a high-speed camera tracks its trajectory only in a plane normal to the camera's line of sight, defined as the YZ plane. The magnetic field intensity component in the Z direction is three orders of magnitude smaller than the gravity. Therefore, the inversion calculation of the magnetic susceptibility of a single lunar soil particle is based on the displacement change in the Y direction of the particle's trajectory. It should be noted that a single lunar soil particle is only affected by the magnetic field force in the Y direction.

[0078] Therefore, the component of the magnetic field force in the Y direction on a single particle of lunar soil (a particle with a permanent magnetic moment) at any position in the vacuum chamber is: .

[0079] Where μ0 is the vacuum permeability, V p is the absolute volume of a single lunar soil particle to be measured, is the volume magnetic susceptibility of a single particle of lunar soil to be measured. is the magnetic field intensity component of the target point in the X direction, H y is the magnetic field intensity component of the target point in the Y direction, H z is the magnetic field intensity component of the target point in the Z direction, H x The rate of change in the Y direction, H y The rate of change in the Y direction, H z The rate of change in the Y direction.

[0080] It should be noted that the basic parameters of the preset magnetic field are obtained by COMSOL physical field 1:1 reduction simulation calculation.

[0081] Furthermore, the magnetic field intensity components in the preset magnetic field (non-uniform magnetic field) and their partial derivatives in any direction will change with the change of spatial position. A magnet that is completely consistent with the above-mentioned preset magnetic field is constructed in COMSOL. The preset magnetic field provided in this application is N52 neodymium iron boron, with three magnets arranged vertically and a single magnet with a size of 30×10×5mm. The components of the magnetic field intensity in the spatial XYZ directions and their partial derivatives in the Y direction at any position within the experimental field of view are calculated. A high-speed camera tracks the motion trajectory of falling particles with an initial velocity of 0m / s in any direction at a frame rate of 1 / 3000fps, and optimizes the center of mass tracking algorithm to achieve high-precision recognition of particle trajectories with a resolution of 1um.

[0082] When the magnetic susceptibility of the lunar soil single particle to be measured is the volume magnetic susceptibility, in the actual measurement process, the Y-direction coordinate of the lunar soil single particle to be measured at any time and its corresponding shooting frame number are obtained by the particle tracking algorithm (the movement time is solved by the change in the frame number), and the area where the Y coordinate changes stably and monotonically is selected (to weaken the influence of the center of mass offset caused by rotation), and the acceleration corresponding to the microelement interval is solved according to the rate of change of the velocity of the first and last points in each microelement interval (δy~1-2mm, δz<3mm) (the velocity of any point is obtained according to the Y-direction displacement and movement time of the two adjacent points before and after), and then the Hx, Hy, Hz, and 、 、 The numerical value is used to determine the magnetic susceptibility of a single particle of lunar soil to be measured.

[0083] When the magnetic susceptibility of a single lunar soil particle to be measured is the mass magnetic susceptibility, the actual measurement process is the same as the above-mentioned method for determining the volume magnetic susceptibility, and will not be repeated here. The ratio of the density of the single lunar soil particle to be measured to the volume magnetic susceptibility is determined as the mass magnetic susceptibility of the single lunar soil particle to be measured.

[0084] In one example, when the lunar soil single particle to be measured is a standard ferromagnetic material, magnetite particle (diameter ~500um), the method provided by the present invention determines that the specific magnetic susceptibility of the lunar soil single particle to be measured is 1.63*10 - 4 m 3 / kg, since the specific magnetic susceptibility of magnetite particles is generally 2*10 -5 ~ 2*10 -4 m 3 / kg, therefore, the measurement result obtained by the method provided by the present invention is within the range of the specific magnetic susceptibility of standard magnetite, and can effectively realize the rapid and accurate measurement of the specific magnetic susceptibility / volume magnetic susceptibility of single-particle minerals.

[0085] As can be seen from steps S1-S4 above, the method provided by the embodiments of the present invention obtains an image of the motion trajectory of a single lunar soil particle to be measured within a vacuum chamber with a preset magnetic field, then establishes a magnetic field model corresponding to the preset magnetic field. The acceleration of the single lunar soil particle to be measured within each of the multiple microelement intervals included in the motion trajectory of the single lunar soil particle is then determined. Finally, the magnetic susceptibility of the single lunar soil particle is determined based on the magnetic field model. This process enables a relatively systematic and comprehensive determination of the magnetic susceptibility of a single lunar soil particle. This method provides a new and simple approach to studying the magnetic characteristics of lunar soil, facilitating a deeper understanding of its material composition and structure. By measuring the magnetic susceptibility of single lunar soil particles, it can provide critical data support for lunar science research, fill gaps in single-particle magnetic susceptibility determination in related research fields, and enhance the accuracy and depth of research into lunar material properties. In other words, the method provided by the present invention enables rapid and accurate determination of the magnetic susceptibility of single lunar soil particles. Compared to related measurement methods, it can effectively reduce testing costs and improve test accuracy. Furthermore, it can effectively reduce the sample volume required during testing, meeting the requirements for testing rare samples such as lunar soil and asteroids.

[0086] In one possible implementation, the method provided by the embodiment of the present invention further includes: Determine the standard trajectory motion patterns of multiple particles with different magnetic susceptibilities.

[0087] After the above S1, the method provided by the embodiment of the present invention further includes: The motion trajectory map of the single lunar soil particle to be measured is determined based on the motion trajectory image of the single lunar soil particle to be measured.

[0088] Determine the similarity between the motion trajectory map of the single lunar soil particle to be measured and each standard trajectory motion map in multiple standard trajectory motion maps of particles with different magnetic susceptibilities.

[0089] The magnetic susceptibility of the particle corresponding to the standard trajectory motion pattern with the highest similarity is determined as the magnetic susceptibility of the single lunar soil particle to be measured.

[0090] Among them, the standard trajectory motion maps of multiple particles with different magnetic susceptibilities and the motion trajectory map of a single lunar soil particle to be measured are determined based on the same lunar soil single particle magnetic susceptibility measurement and calculation device, that is, the preset magnetic field of the standard trajectory motion maps of multiple particles with different magnetic susceptibilities and the motion trajectory map of a single lunar soil particle to be measured is the same.

[0091] The method provided by the present invention determines the standard trajectory motion patterns of multiple particles with different magnetic susceptibilities. After obtaining the motion trajectory pattern of a single lunar soil particle to be measured, the magnetic susceptibility of the single lunar soil particle to be measured can be quickly and accurately determined based on the similarity between the standard trajectory motion patterns of multiple particles with different magnetic susceptibilities and the motion trajectory pattern of the single lunar soil particle to be measured.

[0092] The above mainly introduces the solution of the embodiment of the present invention from the perspective of method. It is understandable that, in order to realize the above functions, the measurement system 100 includes at least one of the hardware structure and software modules corresponding to the execution of each function. It should be easily appreciated by those skilled in the art that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the embodiment of the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the embodiment of the present invention.

[0093] In embodiments of the present invention, measurement system 100 can be divided into functional units based on the above-described method examples. For example, measurement system 100 can be divided into functional units corresponding to respective functions, or two or more functions can be integrated into a single processing unit. These integrated units can be implemented as either hardware or software functional units. It should be noted that the division of units in the embodiments of the present invention is illustrative and represents only one logical functional division; alternative divisions may be employed in actual implementations.

[0094] For example, Figure 5A schematic diagram of the hardware structure of a measurement system provided by an embodiment of the present invention is shown. The measurement system 100 includes an image acquisition module 110 for acquiring a motion trajectory image of a single lunar soil particle to be measured. The motion trajectory image is an image captured by a high-speed camera after the single lunar soil particle is released without initial velocity at a predetermined position within a vacuum chamber via an anti-static release mechanism. A predetermined magnetic field is provided within the vacuum chamber. A model establishment module 120 is configured to establish a magnetic field model corresponding to the predetermined magnetic field. The magnetic field model represents the three-dimensional magnetic field intensity components of the predetermined magnetic field at any position. The three-dimensional magnetic field intensity components include magnetic field intensity components in the X, Y, and Z directions, where the Y direction is the horizontal direction of the plane normal to the high-speed camera's line of sight, and the Z direction is the direction of gravity acting on the single lunar soil particle. An interval determination module 130 is configured to determine, based on the motion trajectory image of the single lunar soil particle to be measured, a plurality of micro-element intervals within the trajectory of the single lunar soil particle to be measured. Each micro-element interval includes a micro-element start point and a micro-element end point, as well as the time instants corresponding to the measured movement of the single lunar soil particle to the micro-element start point and the micro-element end point. The magnetic susceptibility measurement module 140 is used to determine the magnetic susceptibility of the single lunar soil particle to be measured based on the magnetic field model and the multiple infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured.

[0095] In some embodiments, see Figure 6 The embodiment of the present invention further provides a device for measuring and calculating the magnetic susceptibility of a single particle of lunar soil, the device comprising: The vacuum chamber 610 is used to provide a vacuum environment for the movement of single particles of lunar soil to be measured.

[0096] The particle release mechanism 620 arranged in the vacuum chamber 610 is used to eliminate the static electricity carried by the single lunar soil particle to be measured, and then control the single lunar soil particle to be measured to be released at a preset position with an initial velocity of 0.

[0097] The magnet array 630 disposed in the vacuum chamber 610 is used to provide a preset magnetic field.

[0098] The high-speed camera 640 is used to obtain a motion trajectory image of the single lunar soil particle to be measured in a plane with the line of sight of the high-speed camera 640 as the normal after the particle release mechanism releases the single lunar soil particle to be measured, and send the motion trajectory image to the processor.

[0099] Processor 650 is used to receive the motion trajectory image and determine the magnetic susceptibility of the single lunar soil particle to be measured based on the motion trajectory image.

[0100] In some embodiments, the processor 650 is configured to: establish a magnetic field model corresponding to a preset magnetic field, the magnetic field model being used to characterize the three-dimensional magnetic field intensity components of the preset magnetic field at any position, the three-dimensional magnetic field intensity components including the magnetic field intensity component in the X direction, the magnetic field intensity component in the Y direction, and the magnetic field intensity component in the Z direction, wherein the Y direction is the normal plane direction of the high-speed camera's line of sight path, and the Z direction is the direction of gravity acting on a single lunar soil particle. Based on the motion trajectory image of the single lunar soil particle to be measured, a plurality of microelement intervals including the motion trajectory of the single lunar soil particle to be measured are determined, each microelement interval including a microelement starting point and a microelement end point, as well as the time corresponding to the measured movement of the single lunar soil particle to the microelement starting point and the microelement end point. Based on the magnetic field model, the magnetic susceptibility of the single lunar soil particle to be measured is determined based on the plurality of microelement intervals including the motion trajectory of the single lunar soil particle to be measured.

[0101] In a possible implementation, the apparatus further includes: The fill light device 660 is used to provide a bright environment for the high-speed camera to shoot.

[0102] The lunar soil recovery mechanism 670 is used to recover single particles of lunar soil to be measured.

[0103] An embodiment of the present invention further provides a computer-readable storage medium storing at least one computer instruction, which is loaded and executed by a processor to implement the methods of each of the above embodiments. For explanations of the relevant contents and descriptions of the beneficial effects of any of the above-mentioned computer-readable storage media, reference can be made to the corresponding embodiments described above and will not be repeated here.

[0104] The embodiment of the present invention further provides a chip. The chip integrates a control circuit and one or more ports for implementing the functions of the above-mentioned measurement system 100. Optionally, the functions supported by the chip can be referred to above and will not be repeated here.

[0105] Those skilled in the art will appreciate that all or part of the steps of the above-described embodiments can be implemented by a program that instructs the relevant hardware to perform the program, which can be stored in a computer-readable storage medium. The aforementioned storage medium can be a read-only memory, a random access memory, or the like. The aforementioned processing unit or processor can be a central processing unit, a general-purpose processor, an application-specific integrated circuit (ASIC), a microprocessor (digital signal processor, DSP), a field programmable gate array (FPGA), or other programmable logic device, transistor logic device, hardware component, or any combination thereof.

[0106] An embodiment of the present invention further provides a computer program product comprising instructions that, when executed on a computer, cause the computer to perform any of the methods described in the above embodiments. The computer program product comprises one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present invention are fully or partially performed. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium accessible by a computer or a data storage device such as a server or data center that integrates one or more available media. Available media may include magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state drives).

[0107] It should be noted that the devices for storing computer instructions or computer programs provided in the embodiments of the present invention, such as but not limited to the above-mentioned memories, computer-readable storage media, and communication chips, are all non-transitory. Those skilled in the art should appreciate that in one or more of the above examples, the functions described in the embodiments of the present invention can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable storage medium or transmitted as one or more instructions or codes on a computer-readable storage medium. Computer-readable storage media include computer storage media and communication media, where communication media includes any medium that facilitates the transmission of computer programs from one location to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0108] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A method for measuring and calculating the magnetic susceptibility of a single lunar soil particle, characterized in that: The method comprises: Acquire a motion trajectory image of a single lunar soil particle to be measured, wherein the motion trajectory image is an image acquired by a high-speed camera after the single lunar soil particle to be measured is released without initial velocity at a preset position in a vacuum chamber through an electrostatic discharge mechanism, and a preset magnetic field is set in the vacuum chamber; Establish a magnetic field model corresponding to the preset magnetic field, where the magnetic field model is used to characterize the three-dimensional magnetic field intensity components of the preset magnetic field at any position, wherein the three-dimensional magnetic field intensity components include the magnetic field intensity components in the X direction, the magnetic field intensity components in the Y direction, and the magnetic field intensity components in the Z direction, wherein the Y direction is the horizontal direction of the normal plane of the high-speed camera's line of sight path, and the Z direction is the direction of gravity on the single particle of lunar soil; Determining, based on the motion trajectory image of the single lunar soil particle to be measured, a plurality of microelement intervals included in the motion trajectory of the single lunar soil particle to be measured, each microelement interval including a microelement starting point and a microelement end point, and corresponding times when the measured single lunar soil particle moves to the microelement starting point and the microelement end point; Based on the magnetic field model, the magnetic susceptibility of the single lunar soil particle to be measured is determined according to a plurality of infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured.

2. The method according to claim 1, characterized in that For any microelement interval, the position change between the microelement starting point and the microelement end point in the Y direction is greater than or equal to 1 mm and less than or equal to 2 mm, and the position change between the microelement starting point and the microelement end point in the Z direction is less than or equal to 3 mm.

3. The method according to claim 2, characterized in that In a case where the magnetic susceptibility of the single lunar soil particle to be measured is mass magnetic susceptibility, determining the magnetic susceptibility of the single lunar soil particle to be measured based on the magnetic field model and according to a plurality of infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured includes: Determine the acceleration corresponding to each microelement interval according to each microelement interval including the microelement starting point, the microelement end point, and the measured time corresponding to the movement of the single lunar soil particle to the microelement starting point and the microelement end point; Determine the mass magnetic susceptibility of each microelement interval based on the acceleration corresponding to each microelement interval, the three-dimensional magnetic field intensity component corresponding to the target point of each microelement interval, and the rate of change of the single lunar soil particle to be measured in the Y direction, where the target point is the midpoint between the microelement starting point and the microelement end point; The average value of the mass magnetic susceptibility corresponding to each infinitesimal interval in the multiple infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured is determined as the magnetic susceptibility of the single lunar soil particle to be measured.

4. The method according to claim 3, characterized in that The mass magnetic susceptibility X of the lunar soil single particle to be measured m The formula for determining is: ； Among them, a is the acceleration corresponding to each infinitesimal interval, μ0 is the vacuum permeability, is the magnetic field intensity component of the target point in the X direction, H y is the magnetic field intensity component of the target point in the Y direction, H z is the magnetic field intensity component of the target point in the Z direction; H x The rate of change in the Y direction, H y The rate of change in the Y direction, H z The rate of change in the Y direction.

5. The method according to claim 2, characterized in that In a case where the magnetic susceptibility of the single lunar soil particle to be measured is the volume magnetic susceptibility, determining the magnetic susceptibility of the single lunar soil particle to be measured based on the magnetic field model and according to a plurality of microelement intervals included in the motion trajectory of the single lunar soil particle to be measured includes: Obtaining the density of the single lunar soil particle to be measured; Determine the acceleration corresponding to each microelement interval according to each microelement interval including the microelement starting point, the microelement end point, and the measured time corresponding to the movement of the single lunar soil particle to the microelement starting point and the microelement end point; Determine the volume magnetic susceptibility of each microelement interval based on the density of the lunar soil single particle to be measured, the acceleration corresponding to each microelement interval, the three-dimensional magnetic field intensity component corresponding to the target point of each microelement interval, and the rate of change of the lunar soil single particle to be measured in the Y direction, where the target point is the midpoint between the microelement starting point and the microelement end point; The average value of the volume magnetic susceptibility corresponding to each infinitesimal interval in the multiple infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured is determined as the magnetic susceptibility of the single lunar soil particle to be measured.

6. The method according to claim 5, characterized in that The formula for determining the volume magnetic susceptibility X of the lunar soil single particle to be measured is: ； Wherein, ρ is the density of the single lunar soil particle to be measured; a is the acceleration corresponding to each infinitesimal interval; μ0 is the vacuum permeability, is the magnetic field intensity component of the target point in the X direction, H y is the magnetic field intensity component of the target point in the Y direction, H z is the magnetic field intensity component of the target point in the Z direction; H x The rate of change in the Y direction, H y The rate of change in the Y direction, H z The rate of change in the Y direction.

7. The method according to claim 6, characterized in that Before obtaining the motion trajectory image of the single lunar soil particle to be measured, the method further includes: The preset position is determined according to the magnetic field strength of the preset magnetic field so that the position change in the Y direction per unit time of the motion trajectory of the single lunar soil particle to be measured is greater than a preset threshold.

8. A lunar soil single-grain magnetic susceptibility measurement and calculation system, characterized in that: The system comprises: An image acquisition module is used to acquire a motion trajectory image of a single lunar soil particle to be measured, wherein the motion trajectory image is an image acquired by a high-speed camera after the single lunar soil particle to be measured is released without initial velocity at a preset position in a vacuum chamber through an electrostatic discharge mechanism, and a preset magnetic field is set in the vacuum chamber; A model building module is used to establish a magnetic field model corresponding to the preset magnetic field, wherein the magnetic field model is used to characterize the three-dimensional magnetic field intensity components of the preset magnetic field at any position, wherein the three-dimensional magnetic field intensity components include the magnetic field intensity components in the X direction, the magnetic field intensity components in the Y direction, and the magnetic field intensity components in the Z direction, wherein the Y direction is the horizontal direction of the normal plane of the high-speed camera's line of sight path, and the Z direction is the direction of gravity on the single particle of lunar soil; an interval determination module for determining, based on the motion trajectory image of the single lunar soil particle to be measured, a plurality of microelement intervals included in the motion trajectory of the single lunar soil particle to be measured, each microelement interval including a microelement starting point and a microelement end point, and the time corresponding to the movement of the single lunar soil particle to the microelement starting point and the microelement end point; The magnetic susceptibility measurement module is used to determine the magnetic susceptibility of the single lunar soil particle to be measured based on the magnetic field model and according to the multiple infinitesimal intervals included in the motion trajectory of the single lunar soil particle to be measured.

9. A device for measuring and calculating the magnetic susceptibility of a single lunar soil particle, characterized in that: The device comprises: A vacuum chamber is used to provide a vacuum environment for the movement of single lunar soil particles to be measured; A particle release mechanism disposed in the vacuum chamber is used to eliminate static electricity carried by the single lunar soil particle to be measured and then control the single lunar soil particle to be measured to be released at a preset position with an initial velocity of 0; A magnet array disposed in the vacuum chamber, for providing a preset magnetic field; a high-speed camera, configured to obtain a motion trajectory image of the single lunar soil particle to be measured in a plane with the line of sight of the high-speed camera as a normal direction after the single lunar soil particle to be measured is released by the particle release mechanism, and to send the motion trajectory image to a processor; The processor is used to receive the motion trajectory image and determine the magnetic susceptibility of the single lunar soil particle to be measured based on the motion trajectory image.

10. An electronic device, characterized in that: include: processor; a memory for storing instructions executable by the processor; Wherein, the processor is configured to execute the instructions to implement the method for measuring and calculating the magnetic susceptibility of a single particle of lunar soil as described in any one of claims 1-7.

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