327 results about "Lunar soil" patented technology

The invention discloses a lunar resource in-situ exploration-while-drilling device and method. The lunar resource in-situ exploration-while-drilling device is composed of a spiral drilling tool, an illumination light source module, a polarization spectrum detection module and a dual-channel spectrum measurement module. The drilling tool drill rod is of a hollow structure. Light emitted by the illumination light source module is collimated and depolarized to form unpolarized parallel light to irradiate lunar soil on the side wall of the drill hole, and the polarization spectrum measurement probe collects reflected light of the lunar soil; the reflected light is collimated by a front collimator objective of the probe and then sequentially passes through a spectrum modulation unit consisting of an achromatic 1 / 4 wave plate, a multi-stage wave plate, a beam splitter prism and two polaroids of which the light transmission directions are vertical to each other, and two orthogonal light beams are formed, so that polarization information of the reflected light is modulated in a spectrum dimension; demodulating the modulated spectrum to obtain the spectrum and polarization information of the lunar soil reflected light; and the resource distribution and content and the physical characteristics of the original lunar soil are inversed by using the polarization spectrum characteristics of the lunar soil. According to the invention, in-situ exploration of lunar subsurface depth profile mineral resources can be realized.

The invention discloses a lunar radar horizon tracking method based on a dynamic search center, and solves the problems that an existing method is high in dependence on artificial experience and low in processing efficiency, and the false horizon misjudgment rate is high due to lunar soil non-uniformity interference. Comprising the following steps: performing Hilbert transform on a radar signal to extract an envelope; based on historical horizon data, predicting a dynamic search center of a current channel through Gaussian weighted average and determining a search window; screening local maximum value points in the window as candidate points, and calculating signal intensity, smoothness and edge direction scores of the candidate points; selecting an optimal candidate point as a horizon position through multi-feature linear fusion; and according to the lunar soil interface form and the signal-to-noise ratio dynamic adjustment parameters, tracking and outputting a final horizon path one by one. According to the method, historical path constraints and local signal features are fused, the identification precision and robustness of the lunar soil layered interface in the complex electromagnetic environment are remarkably improved, and the method is suitable for radar data processing of lunar exploration tasks such as Chang'e 4 and the like.

The invention belongs to the technical field of solar photo-thermal power generation, and discloses a tower type solar power generation system based on lunar soil particle moving bed heat exchange, which utilizes local materials of lunar soil to prepare solid heat storage particles as a heat transfer and heat storage medium, greatly reduces the mass and volume of the system and the cost and risk of transporting materials from the earth, and improves the energy efficiency. The efficient particle moving bed heat exchanger combining the particle receiver and the heat collector utilizes direct efficient contact heat exchange between solid particles and between the particles and a heat exchange working medium, has the characteristics of high heat exchange efficiency, small heat loss and compact structure, and is particularly suitable for space vacuum and microgravity environments; it is ensured that heat is reliably and stably transmitted to the Brayton cycle power generation system from concentrated solar energy, and power is generated through the Brayton cycle power generation system.

The invention discloses a transmission electron microscope sample preparation method for a lunar soil space weathered surface and application, and the method comprises the following steps: pasting target lunar soil particles on a carbon conductive adhesive tape, and enabling the target flat surfaces of the target lunar soil particles to be placed back to the carbon conductive adhesive tape; plating a layer of carbon film on the surface of the target lunar soil particle to obtain a scanning electron microscope sample of the target lunar soil particle; screening out a plurality of target research areas on the carbon film corresponding to the target flat surface; uniformly plating a layer of gold film on the carbon film corresponding to the target lunar soil particle scanning electron microscope sample; deposition operation of a research area protection layer is carried out on the gold film corresponding to the target research area through an electron beam and an ion beam in sequence; and performing slicing operation perpendicular to the target flat surface on the target lunar soil particle scanning electron microscope sample to obtain the target lunar soil particle transmission electron microscope sample. According to the method, lunar soil space weathering characteristics can be truly reserved, and an accurate and reliable sample is provided for lunar soil space weathering research.

The invention discloses simulated lunar soil for engineering and a preparation process thereof, the simulated lunar soil has a multilayer structure design, and comprises a basic mineral structure layer, a surface activity control layer and a simulated space environment effect layer. The basic mineral structure layer is prepared from modified olivine, titanium-rich basalt, rare earth doped plagioclase, calcium phosphate minerals, nano iron particles and vitreous minerals according to a specific proportion; the surface activity control layer adopts an atomic layer deposition technology to form a nano oxide layer on the surface of the mineral particles; the simulated space environment effect layer is formed through low-pressure helium ion bombardment and ultraviolet irradiation. The preparation process comprises the steps of intelligent graded crushing, mineral phase change control, surface modification and activation treatment, multi-parameter synchronous regulation and control and the like. The simulated lunar soil can be produced in a customized mode according to different lunar area characteristics, the matching degree with real lunar soil physical characteristics exceeds 90%, the ground testing precision of lunar exploration equipment is remarkably improved, and technical support is provided for lunar on-site resource utilization and lunar base construction.

The invention relates to the technical field of space exploration and lunar soil experiments, in particular to a melting centrifugal type mineral particle morphology remodeling device and a lunar soil glass ball preparation method. The device comprises a mineral protolith high-temperature melting system, a mineral melting slurry conveying system, a centrifugal mineral particle size control system and a mineral particle cooling and morphology remodeling system. The preparation method of the lunar soil glass ball comprises the following steps: adding basalt mineral powder and mineral melting additive powder into a melting centrifugal mineral particle morphology remodeling device to obtain simulated lunar soil glass balls with different particle sizes, and performing morphology transformation on the simulated lunar soil glass balls with different particle sizes by using an ion beam gun. And the lunar soil glass ball state of the impact melting history is reduced. According to the method, high-precision engineering mass production of components, morphology and mechanical properties of the lunar soil glass balls is realized through a fusion centrifugal forming and ion beam surface control composite process, and the problem of soil mechanical behavior deviation caused by morphology distortion of existing simulated lunar soil is solved.

The present invention belongs to the field of space technology, and particularly relates to a lunar soil concrete preparation vehicle based on material extrusion molding technology and its uses. The lunar soil concrete preparation vehicle includes: a lunar soil collection system, a lunar soil transmission system, and a concrete preparation and packaging system; the lunar soil collection system is used to grab and collect lunar soil in place, and the lunar soil transmission system transmits the lunar soil collected by the lunar soil collection system to the concrete preparation and packaging system; the concrete preparation and packaging system includes: a central collection plate (18), an outer pressure-bearing box (19) installed on the central collection plate (18), a lateral push rod (17) arranged directly in front of the outer pressure-bearing box (19), a longitudinal push rod (5) arranged on the side of the outer pressure-bearing box (19), a lunar soil pressure box (4) that can move axially in the axial direction of the outer pressure-bearing box (19), and the lunar soil pressure box (4) is connected to a transmission mechanism to control its reciprocating axial movement. The preparation process of the lunar soil concrete preparation vehicle of the present invention is not affected by external conditions, and the preparation of lunar soil "concrete" can be completely completed only by mechanical extrusion. The device of the present invention has no precision instruments, has strong anti-loss performance, is durable, and is simple to repair. In addition, the device is simple to operate, has a small vehicle weight, and is easy to transfer and transport.

The invention discloses a ground measuring device and method for simulating the diffusion coefficient of lunar soil injected volatile components, and belongs to the field of lunar volatile component research equipment. The device comprises a sample bin connected with an ion implantation mechanism and a pressure sensor connected with the sample bin, the ion implantation mechanism can perform volatile ion implantation on a sample in the sample bin, the sample bin can be heated, and the pressure sensor can detect the internal pressure of the sample bin. The method comprises the following steps: performing high-precision volatile component injection on a simulated lunar soil or lunar soil mineral sample, performing step-by-step heating on the sample subjected to volatile component injection so as to heat and release the volatile components, monitoring the internal air pressure change of a system, and determining the diffusion coefficients of the volatile components in the sample at different temperatures by utilizing the air pressure change. According to the technical scheme, ion implantation and heating release are utilized, and a repeatable experiment for simulating the lunar soil volatile component diffusion behavior on the ground is achieved.

The invention discloses a simulated lunar soil low-temperature measurement method and device based on a fluorescent probe, and the method comprises the following steps: S1, the fluorescent probe and simulated lunar soil are mixed, the temperature measurement interval of the fluorescent probe is 80-200K, and the fluorescence intensity in the temperature measurement interval is basically in a linear relation with the temperature; s2, irradiating the simulated lunar soil mixed sample containing the fluorescent probe by using an ultraviolet excitation light source, and collecting the intensity of a fluorescent signal by using an optical high-resolution spectrometer; s3, calculating the temperature of the simulated lunar soil mixed sample according to the intensity of the fluorescence signal and the linear relation between the fluorescence intensity and the temperature. The special low-temperature fluorescent probe is adopted, the lower limit of temperature measurement reaches 80K, and the measurement accuracy under the low-temperature condition can be improved by uniformly mixing the special low-temperature fluorescent probe with lunar soil / simulated lunar soil.

The invention discloses a method for analyzing nitrogen isotope in lunar soil, and relates to the technical field of lunar soil analys.The method comprises the steps that an analysis system composed of a heating cavity and a quadrupole mass spectrometer is prepared, and a connecting pipe is provided with a control valve; preparing a plurality of mixed gases of carbon monoxide and nitrogen in different proportions, measuring and recording the gas pressure linear change slope through an analysis system, and establishing a database; lunar soil is put into a heating cavity to be heated, precipitated gas is measured, the slope is recorded, the mixing proportion is determined according to the measured slope and a database, and the nitrogen isotope ratio is obtained by deducting the amount of carbon monoxide. The method effectively avoids carbon monoxide interference, improves measurement accuracy, is simple and convenient to operate, reduces in-orbit measurement load weight, and provides a reliable analysis means for scientific research of the moon and the planet.

The invention relates to an intelligent particle identification method for lunar soil particle screening, which comprises the following steps of: acquiring an optical signal, image data and a surface electrical signal of the same lunar soil sample particle to form a multi-modal feature set of each lunar soil sample particle; carrying out standardization processing on the multi-modal feature set; constructing a multi-modal deep learning neural network model based on a CNN + MLP + splicing fusion module structure; performing supervised learning training on the multi-modal deep learning neural network model to obtain a trained multi-modal deep learning neural network model; and inputting the standardized data into the trained multi-modal deep learning neural network model to realize particle classification. According to the method, an intelligent identification integrated deep learning model is adopted, the functions of particle shape distinguishing, component identification, particle size sorting and the like are carried out by utilizing an intelligent algorithm, automatic classification, clustering and attribute prediction can be realized, manual marking one by one is not needed, and the working efficiency is effectively improved.

The invention discloses a lunar base building photovoltaic integrated structure based on energy and heat comprehensive management, relates to the technical field of lunar environment control and electric energy, and solves the problems of overtemperature, temperature loss and difficult energy supply of a cabin of a lunar base. The system comprises a reflective thermal insulation layer, a photovoltaic panel, a thermoelectric power generation layer, a phase change heat storage layer and a sintered lunar soil layer, wherein the reflective thermal insulation layer, the photovoltaic panel, the thermoelectric power generation layer, the phase change heat storage layer and the sintered lunar soil layer are sequentially arranged from top to bottom; the thermoelectric power generation layer comprises a plurality of thermoelectric generators; and a phase change heat storage material is arranged in the phase change heat storage layer. The self-adaptive thermal control system is constructed through the energy-thermal control deep coupling design, effective thermal management of the day and night extreme environment of the lunar base building is achieved, effective utilization of light energy is achieved through the photovoltaic panel and the thermoelectric generator, and the productivity burden of core power generation equipment is reduced.

The invention relates to the field of polypropylene fiber preparation, and particularly discloses a polypropylene fiber reinforced simulated lunar soil geopolymer material and a preparation method thereof, the polypropylene fiber reinforced simulated lunar soil geopolymer material comprises the following components by weight: TJ-1 simulated lunar soil; as a main raw material; the length of the polypropylene fiber is 3-9 mm, and the mixing amount of the polypropylene fiber is 0.1-0.6 wt% (based on the total weight of the TJ-1 simulated lunar soil); the composite alkali activator is composed of sodium hydroxide, calcium hydroxide and sodium silicate nonahydrate; by optimizing the length and the mixing amount of the polypropylene fiber (PPF), the compressive strength and the breaking strength of the simulated lunar soil geopolymer are remarkably improved, particularly when the length of the fiber is 6 mm and the mixing amount is 0.4%, the compressive strength and the breaking strength both reach the maximum value and are improved by 54.6% and 117.7% respectively compared with a reference group without the fiber, and the compressive strength and the breaking strength of the simulated lunar soil geopolymer are greatly improved. The improvement is crucial to the application of lunar building materials because it can enhance the structural stability and bearing capacity of lunar buildings.

The invention discloses a system and a method for testing the vacuum thermal sublimation loss rate of ice-containing soil, and belongs to the technical field of vacuum thermal sublimation simulation experiments of space exploration. The test system comprises a data acquisition system, a sample preparation chamber, a first vacuum low-temperature chamber, a second vacuum chamber and an in-place detection simulation vacuum chamber, and can timely place a prepared sample in a test condition, so that the prepared sample is prevented from changing in advance when not entering the simulation vacuum chamber; therefore, the initial condition of the sample is effectively controlled, the accuracy and repeatability of measured data are ensured, meanwhile, the change process of the monitored sample from the initial state to the target condition can be implemented, and in-situ measurement is realized. The test method comprises the influence of factors such as heating temperature, star soil heap type, sample throwing, sample physical property parameters and the like on the vacuum thermally-induced sublimation loss rate of the ice-containing star soil, provides correction parameters for the real water content of the original star soil, and also provides data support for improving the extraction efficiency of lunar soil water ice.

The invention relates to a lunar soil trace water accurate detection test method under equivalent vacuum and ultralow temperature coupling, and belongs to the technical field of extraterrestrial celestial body sampling detection. Aiming at the technical bottleneck that the existing lunar soil trace water detection technology in the earth environment is interfered by water vapor, the method comprises the following steps: placing lunar soil in a sample cabin in a nuclear magnetic probe; the temperature of the sample cabin is adjusted through liquid nitrogen refrigeration, and the ultralow-temperature lunar environment is simulated; the humidity condition of the sample cabin is adjusted, and lunar soil nuclear magnetic semaphores under different humidity are collected; establishing a relation curve of different humidity and nuclear magnetic signal increments; when the semaphore is different, deducting signal increment caused by environment humidity by taking a nuclear magnetic signal of unit humidity under a steady-state condition as a reference to obtain nuclear magnetic signal data under an equivalent vacuum environment; and inverting the semaphore under the equivalent vacuum to obtain the lunar soil water content. Compared with the prior art, the method has the advantages that the key technical problem in extraterrestrial sample earth environment detection is solved, and an important means is provided for moon water resource detection and sampling return sample analysis.

The invention discloses a spraying device and method based on microorganism-magnesium oxide synergistic solidification of lunar loam, belongs to the technical field of microorganism reinforcement, and solves the problem that a building of a lunar base is difficult to adapt to extremely high and low temperature and high radiation environments on the lunar surface. The device specifically comprises a monthly loam collecting mechanism, a connecting pipeline, a mixing mechanism and a spraying mechanism, the moon loam collecting mechanism is connected to one end of the connecting pipeline, and the other end of the connecting pipeline is connected with the mixing mechanism; and the discharging end of the mixing mechanism is connected with a spraying mechanism. According to the device, the moon loam collecting mechanism collects moon loam on the surface of the moon, the moon loam is conveyed to the material mixing mechanism through the connecting pipeline to be mixed into coating slurry, the spraying mechanism sprays the coating slurry to the surface of a moon base building, and the building is protected; mountain loam is used as a raw material of the building coating, the raw material can be obtained in situ, and the transportation cost is reduced; the lunar loam has the performance of resisting extreme temperature difference and high radiation, and can provide effective protection for lunar surface buildings.

The invention belongs to the technical field of lunar exploration equipment, and provides a step-by-step laser-assisted rock breaking drilling tool and method for a lunar-based extreme environment, the drilling tool comprises a conversion disc, a rock drilling tool and a laser head, the laser head and the rock drilling tool are integrated in the same drilling tool structure through the conversion disc, laser or mechanical rock breaking modes can be switched according to working conditions, and the laser or mechanical rock breaking modes can be switched according to the working conditions. And step-by-step rock breaking is realized. The drilling tool is suitable for extreme environments such as low gravity, vacuum, high dust and severe temperature change of the moon, has the advantages of being compact in structure, flexible in switching and high in energy utilization rate, and can be widely applied to tasks such as lunar soil stripping, lunar rock mining, underground structure detection and lunar base construction.

The invention discloses a lunar surface and lunar deep base in-situ non-cementation integrated construction method, which comprises the following steps: through mutual cooperation of a water ice electrolysis lunar vehicle, a thermal rock breaking lunar vehicle and a hoisting-carrying lunar vehicle, selecting a deep lava cave on the lunar as a deep base, and selecting a construction position of a lunar surface base around the deep base; then the hoisting-carrying lunar vehicle carries out loading and unloading operation on the components of the water-ice electrolysis lunar vehicle and carries the position of the thermal rock breaking lunar vehicle; the water-ice electrolysis lunar vehicle continuously converts water-ice resources on the moon into hydrogen and oxygen to supply energy to thermal rock breaking; the thermal rock breaking lunar rover generates high-temperature flames to jet and break rocks, and thermal stripping and associated tensile thermal cracking of lunar soil and lunar rocks are achieved through the high-temperature flames. And finally, synchronous construction is conducted on the lunar surface base and the deep base, materials adopted in the construction process are all taken from the moon in situ, the lunar surface base is constructed by means of a topological interlocking structure, and in-situ non-cementing integrated construction of the lunar surface base and the deep lunar base is achieved.

The invention discloses a method and device for preparing metallic iron and oxygen through electro-deposition of lunar soil in a three-electrode fused salt system, and belongs to the technical field of metallurgy. The device comprises a threaded pipe sealing structure, a gas inlet and outlet structure, a reaction cavity, a crucible, a reaction cavity sealing cover and a three-electrode potential control system. The method comprises the following steps: adding chloride molten salt, a cosolvent and lunar soil / simulated lunar soil into a crucible; raising the temperature to a drying temperature in a simulated moon atmosphere, and keeping the temperature to remove moisture; continuously raising the temperature to the electro-deposition temperature, so that iron-containing components in the lunar soil / simulated lunar soil are fully dissolved; a three-electrode system is adopted for electro-deposition, high-purity metal iron is obtained at a working electrode, and oxygen is efficiently separated out at an auxiliary electrode. The reduction potential is accurately regulated and controlled through a three-electrode system, and synchronous and efficient separation of metal iron and oxygen in lunar soil / simulated lunar soil is achieved.

The invention relates to a lunar-like soil simulant preparation method which comprises the following steps: determining preparation raw materials according to chemical element information of a lunar soil sample, and drying the preparation raw materials; according to particle size distribution data of the lunar soil sample, performing jet milling operation on the dried preparation raw materials; performing grading screening on the crushed particles to obtain particles with different particle sizes; and according to the grading curve and density data of the lunar soil sample, uniformly mixing the particles with various particle sizes in proportion to obtain the simulated sample. Compared with the prior art, the lunar-soil-like simulant prepared by the method can effectively retain original corner angles and structural characteristics of particles.

A method for inverting true mass content of water ice in lunar soil using a lunar soil water molecule analyzer (LSWMA) includes: obtaining weight data of a lunar soil sample, temperature data of a sample receiving container that receives the lunar soil sample, and duration of a transfer process of the lunar soil sample; obtaining measurement data of total pressure of the water vapor; calculating a sublimation loss based on a sublimation rate and the duration of the transfer process, and estimating a relative sublimation loss rate; correcting the measurement data of the total pressure of the water and obtaining true pressure data of the water vapor; and calculating, based on the true pressure data of the water vapor, mass of the water vapor, and further calculating mass content of water ice in lunar soil.

The invention relates to the technical field of lunar cabin section assembly and butt joint, and discloses a large-deformation flexible inflation channel for lunar cabin section assembly and butt joint, which comprises a sealed flexible channel and at least two groups of deformation control air bags, the two ends of the sealed flexible channel are respectively connected with a butt joint frame and a butt joint ring, and the deformation control air bags are arranged on the outer side of the sealed flexible channel; the deformation control air bag controls the overall pose and rigidity of the sealed flexible channel through inflation and deflation so as to compensate pose deviation between the butt joint cabin sections and balance internal loads generated by butt joint, the large-deformation flexible inflation channel is assembled on the lunar surface cabin sections in a butt joint mode, and the large-deformation flexible inflation channel can be folded and unfolded on the lunar surface in a lossless, efficient and repeated mode. Multiple properties such as wear resistance and puncture resistance and good air tightness are achieved, and multiple times of connection, separation and reconstruction of the cabin section can be achieved; the air bag can be controlled through deformation to balance the internal pressure load, prevent the cabin section from overturning and the like according to the posture change and the load; and the method also has high reliability and long-term service capability, and adapts to pose changes caused by lunar soil settlement.

A spiral drive continuous in-situ sampling and encapsulation device for lunar soil belongs to the field of aerospace technology. The present invention solves the problem that the existing in-situ sampling and detection devices cannot accurately control the sampling amount and particle size distribution. The upper end of the spline shaft is rotatably connected to the support tube through a bearing assembly. The threaded spline push block is slidably mounted on the spline shaft along the axial direction of the spline shaft, and the threaded spline push block is threadedly connected to the inner wall of the support tube. A through hole is radially formed in the lower part of the spline shaft. The positioning leaf spring is inserted into the through hole and its upper end is fixedly connected to the spline shaft. The dust-proof plug is inserted into the lower end of the support tube. The suction sheet is coaxially sleeved on the lower part of the spline shaft and the dust-proof plug is located between the support tube and the suction sheet. A first annular groove is coaxially formed on one end face of the rotary cutting sheet, and a second annular groove is coaxially formed on one end face of the constant volume pressing cover. The constant volume pressing cover is buckled in the first annular groove.

The invention relates to a lunar soil microwave heating effect evaluation method. The method comprises the following steps: establishing a microwave cavity model enclosed by a metal boundary; calculating electric field distribution of the lunar soil according to the magnetic conductivity and the complex dielectric constant of the lunar soil; a plurality of sampling bodies are arranged in the target area, and microwave energy absorbed by each sampling body is calculated according to electric field distribution of lunar soil; determining the specific heat capacity of the lunar soil along with the temperature change, and calculating the temperature change rate in each sampling body according to the microwave energy; calculating the standard deviation and the average value of the temperature change rates of all the sampling bodies, and obtaining a variable coefficient along with the temperature change; and when the temperature of the lunar soil is balanced, judging the microwave heating uniformity of the lunar soil according to the variable coefficient. In the process of analyzing the lunar soil microwave heating effect, starting from the first principle, the characteristic that the specific heat capacity of the lunar soil changes along with the temperature is considered, the physical reality that the lunar soil absorption energy changes along with the temperature in the process of converting the lunar soil absorption energy into the temperature is fitted, and the accuracy of lunar soil microwave heating effect analysis is improved.

The application discloses a complex lunar surface scattering coefficient image simulation method and system based on multiple data jointing, and the method comprises the following steps: firstly, terrain camera data is used to acquire terrain height data of a special geological structure of the moon as model geometric information input; secondly, a lunar soil weathering layer electromagnetic scattering model is established by using a vector radiation transfer theory and a lunar surface stone double-component method to simulate the interaction between electromagnetic waves and lunar rocks, the lunar surface, weathering layer particles and the subsurface; finally, a radar imaging mechanism is simulated based on a mapping projection algorithm, the scattering coefficient on each scattering facet is calculated by using the electromagnetic scattering model, and the scattering coefficient is mapped to an imaging area by using a ray tracing method, a shadow judgment method and the like, so that the scattering echo of each region of the complex lunar surface is rapidly estimated, and the fast scattering coefficient image simulation is realized.

The present invention discloses a system for testing the transmission return accuracy of a drive mechanism for lunar soil and water ice detection, comprising a turntable, a fixing frame, a support seat, a reflector assembly, an autocollimator, a multi-dimensional adjustment table, a base plate, and a drive mechanism. The drive mechanism is mounted on the turntable via the support seat and the fixing frame, and the relative positions of the autocollimator and the reflector assembly are adjusted so that the optical axis of the autocollimator is perpendicular to the reflector. During testing, the turntable is rotated in the reverse direction to compensate for the angle of rotation of the drive mechanism in the forward direction, so that the reflected image of the autocollimator is always within the test field of view, thereby achieving the transmission return accuracy test of the drive mechanism. The system has a simple structure and convenient and effective testing, and can be used for the transmission return accuracy test of the drive mechanism for water ice detection in lunar soil water molecule analyzers.

The present application discloses a method for generating a lunar soil sample containing crushable particles based on PFC3D and related equipment. The method includes: generating an initial lunar soil specimen within a preset range of a constraint wall, where the initial lunar soil specimen includes a plurality of spherical particles; obtaining the particle information of the spherical particles, and selecting target crushable particles that match the spherical particles based on the particle information; using the target crushable particles to replace the matching spherical particles to obtain a plurality of specimen particles corresponding to the initial lunar soil specimen; compacting the plurality of specimen particles to obtain a specimen layer; after obtaining a preset number of specimen layers, obtaining a target lunar soil sample based on the preset number of specimen layers. The present application simulates lunar soil by replacing spherical particles with crushable particle bodies, and obtains a lunar soil sample that conforms to the mechanical properties of actual lunar soil.

The present invention discloses an in-situ micro-quantitative sampling device and method for determining particle size, volume, and compaction density of volatile components in lunar soil, which relates to the field of aerospace technology and solves the problem that existing in-situ sampling detection devices cannot accurately control the sampling amount and particle size distribution. It includes a sampling tube and a number of absorption sheets. The absorption sheets are installed inside the sampling tube. By controlling the size of the sample injection part of the absorption sheets, the collection of lunar soil within a specific particle size range is achieved. A continuous filling pressure exists on the absorption surface at the bottom of the sampling tube to realize the constant-density collection of lunar soil by the absorption sheets. The absorption sheet includes a rotary cutting sheet and a constant-volume pressing cover. The constant-volume pressing cover is installed on the rotary cutting sheet to form a sample storage cavity, realizing the constant-volume collection of lunar soil. The present invention can accurately control the sampling amount and particle size distribution of lunar soil, and at the same time can exclude the influence of large-particle lunar soil on the sampling process, facilitating subsequent thermal volatilization extraction and analysis.

This invention discloses an in-situ lunar regolith thermal energy storage and controllable utilization device, relating to the field of lunar surface thermal energy storage technology. The invention includes: a lunar regolith thermal storage body, formed by high-temperature melting of in-situ lunar regolith for storing thermal energy; a heat spreader plate, disposed on the lower surface of the lunar regolith thermal storage body, serving as a channel for energy exchange between the lunar regolith thermal storage body and the outside; and a heat expansion component, fixedly connected to the heat spreader plate, used to improve the heating efficiency of the lunar regolith thermal storage body during the heating process. This invention achieves efficient storage of solar energy and redundant electrical energy during lunar daytime by combining the lunar regolith thermal storage body with a high-efficiency heat expansion component, and achieves stable energy release and cascaded utilization through a controllable heat release component, thereby realizing peak shifting and valley filling of lunar surface energy in both time and space dimensions.

The invention discloses a design method of a high-integration PGNAA element detector for deep space exploration, aiming at the optimization design of a PGNAA device, each module assembly is designed and combined through a compact structure, a moderator structure of a conventional PGNAA element detector is removed, the function of a moderator is replaced by a detection sample, and the design of the high-integration PGNAA element detector for deep space exploration is realized. According to the invention, the quality factor Q is used as an optimization criterion, and the size of the neutron shielding body is optimized, so that the PGNAA element detector has the advantages of high integration, small size, good portability and the like, and can be mounted on a mechanical arm of the lunar vehicle to measure the type, content and distribution of lunar soil elements along with the movement of the lunar vehicle.