545 results about "Field tests" patented technology

The invention discloses a spherical crown dome horizontal circumference drilling and blasting parameter model optimization construction method, and the method comprises the steps: collecting geological, crustal stress, hydrological and structural plane data, building a three-dimensional geological information model, carrying out the working condition partitioning based on a surrounding rock quality evaluation index, and constructing a parameter probability distribution model and an uncertainty boundary of each partition. Therefore, precise space description and parameter variability quantification of the spherical crown dome construction area are realized. The method comprises the following steps: establishing a three-dimensional numerical model of a cavern group, integrating blasting power, seepage and stress multi-physical field effects by adopting a finite element-discrete element coupling method, introducing a surrounding rock deterioration constitutive model considering cumulative damage and unloading aging, calibrating key parameters through an indoor test and field trial explosion, and establishing a three-dimensional model of the cavern group. And the numerical model can truly reflect the mechanical property degradation track of the surrounding rock under repeated blasting disturbance.

The invention discloses a grouting parameter intelligent feedback method based on rock mass groutability evaluation, which comprises the following steps: collecting geological condition data, rock mass quality data, field test data and grouting process data, and constructing a rock mass groutability grading data set; an SMOTE algorithm is adopted to process data imbalance, input indexes are screened through Pearson correlation analysis, and data are normalized through deviation standardization; an XGBoost classification model is constructed, hyper-parameters are optimized through grid search, the model is trained through K-fold cross validation, and the rock mass groutability grade is evaluated; constructing an XGBoost regression model by taking a rock mass groutability grade, grouting construction data and monitoring data as input, and predicting the maximum value and the minimum value of grouting pressure and slurry density by using an optimal model; and generating a grouting parameter interval according to the predicted maximum value and minimum value, and dynamically feeding back to the grouting equipment to regulate and control parameters. According to the method, scientificity and accuracy of rock mass groutability evaluation and grouting parameter regulation and control can be effectively improved.

The invention relates to the technical field of laser transmission characteristic testing, in particular to a medium-wave infrared laser long-distance transmission attenuation characteristic external field testing method and device. The method is an indirect measurement method, a diffuse reflection plate is set up at a designated position of a transmission path, laser reaching the diffuse reflection plate is quantitatively measured through a detector, in combination with a bidirectional reflection distribution function of the diffuse reflection plate, the target reaching power of the laser transmitted through the long-distance atmosphere is obtained, and the target reaching power is calculated by comparing the target reaching power with the laser output power of a transmitting end. The laser long-distance transmission power attenuation characteristic can be obtained, and the problems that in current laser atmospheric transmission attenuation characteristic measurement, a laser radar does not have a medium-wave infrared measurement method, and the power of a specified position of a transmission path cannot be directly received and measured through a detector due to the fact that the size of a light spot is too large after long-distance transmission in direct measurement are solved. The measuring device is simple in structure and can support indirect measurement to obtain the long-distance transmission power attenuation characteristics of the medium-wave infrared laser.

The invention discloses a proportioning optimization method for efficiently balancing a chemical oil displacement system. The proportioning optimization method comprises the following steps: S1, collecting and sorting experiment and field data of the existing chemical oil displacement system; the oil displacement effect can be effectively improved by continuously optimizing the ratio of the chemical agents through experiments and numerical simulation, so that the recovery efficiency of an oil field is improved, the oil-water interface characteristics can be improved, the fluid viscosity can be reduced, the oil fluidity can be improved through the reasonable ratio of the chemical agents, and by analyzing the cost benefits of different ratios, the oil displacement effect can be effectively improved. The chemical agent combination with higher economical efficiency can be selected, the expenditure in the chemical oil displacement process is reduced, the oil displacement effect and cost are comprehensively considered, the resource utilization efficiency of the chemical oil displacement system is improved by optimizing the proportion, and it can be ensured that the selected proportion is not only theoretically effective but also theoretically effective through laboratory verification and on-site small-scale tests. And the method also has practical significance in practical application.

The invention discloses a follow-up PIV boundary layer flow field test system and test method based on electrolytic hydrogen bubbles. The follow-up PIV boundary layer flow field test system comprises an integrated optical measurement module and a tracer particle generation module, the optical measurement module is arranged in the UUV and comprises a laser transmitter assembly, a sapphire prism and two imaging cameras which are symmetrically arranged, and laser sheet light forms a sheet light area on the outer surface of the UUV after being refracted by the sapphire prism; the tracer particle generation module comprises a cathode, an anode and a power supply unit, the cathode is a platinum wire array composed of a plurality of platinum wires arranged in the axial direction of the UUV, and the platinum wires are located at different heights away from the wall face of the UUV; the power supply unit selectively electrifies the platinum wire, independently adjusts the voltage, controls the number and frequency of generated hydrogen bubbles, and achieves the synchronous measurement of flow field information at different thickness positions of a boundary layer. According to the invention, boundary layer flow field in-situ follow-up measurement and synchronous fine measurement of different thickness positions under the condition of not changing the UUV shape are realized, and the device has the advantages of high integration level, small flow field disturbance, high measurement efficiency and the like.

A temperature field test system for a thermocouple calibration furnace (1) having a temperature uniformity block (8). In the system, two ends of the thermocouple calibration furnace (1) are sealed by means of positioning blocks (9); a standard thermocouple (4) is placed in a quartz tube (2), a reference junction of the standard thermocouple (4) is connected to one end of a wire (3) and is then placed in a glass test tube (5), an opening of the glass test tube (5) is sealed, the glass test tube (5) is placed in a reference junction thermostat (6), and the other end of the wire (3) is connected to an electrical measurement device (7); when empty-furnace temperature field test parameters of the thermocouple calibration furnace (1) are to be acquired, the quartz tube (2) axially passes through the thermocouple calibration furnace (1) and the positioning blocks (9); and when temperature field test parameters of the thermocouple calibration furnace (1) having the temperature uniformity block (8) are to be acquired, the temperature uniformity block (8) is arranged in the thermocouple calibration furnace (1), and an end portion of the quartz tube (2) is inserted into the temperature uniformity block (8). Thus, the placement position of the temperature uniformity block (8) in the thermocouple calibration furnace (1) can be determined, and whether the temperature field of the thermocouple calibration furnace (1) having the temperature uniformity block (8) meets the technical specification requirements is determined. Further disclosed is a temperature field test method for a thermocouple calibration furnace (1) having a temperature uniformity block (8).

The invention discloses a wind turbine fairing optimization design method, which relates to the technical field of fluid machinery and engineering, and comprises the following steps: a basic parameter acquisition and working condition defining step: collecting wind turbine model parameters, and measuring the wind condition of an operation area; the flow guide cover is divided into a windward section, a middle section and a wake flow section; a multi-objective optimization system construction step: determining aerodynamic resistance, structural strength, weight and wake flow influence optimization objectives; an optimization algorithm iteration solving step, wherein an improved non-dominated sorting genetic algorithm is adopted; a simulation verification and parameter correction step: selecting a scheme to perform CFD and finite element simulation; and a physical prototype manufacturing and performance testing step: manufacturing a prototype, and carrying out wind tunnel and field testing. The design efficiency of the air guide sleeve is improved, systematicness is optimized, pneumatic, structure and weight multi-target balance is achieved, cross-model universality is improved, and the problems that traditional design is dependent on experience and unbalanced in performance are solved.

A memory built-in self-test (BIST) controller, corresponding to a partition BIST controller, is configured to control memory testing in one or more corresponding static random access memories (RAMs) and has a first corresponding register configured to store a failure indicator for each of the one or more corresponding RAMs and a second corresponding register configured to store an uncorrectable failure indicator for each of the one or more corresponding RAMs. The partition BIST controller is configured to generate, based on the first and second registers of the MBIST controller, a first in-field test status indicator which indicates whether a failure occurred during memory testing of any RAM corresponding to the partition BIST controller and a second in-field test status indicator which indicates whether an uncorrectable failure occurred during the memory testing of any RAM corresponding to the partition BIST controller.

The invention relates to the technical field of dredging engineering, in particular to a trailing suction dredger fine particle loading efficiency optimization method, which comprises the following steps: through numerical simulation and field test, determining the influence rule of factors such as sediment particle size, cabin entering concentration, cabin entering flow, cabin entering height, mud cabin structure, overflow cylinder and energy dissipation box arrangement and the like on fine particle sediment loading efficiency; according to a numerical simulation result, parameter sensitive factors are defined, meanwhile, sensitive factors of all influence factors are calculated and sorted, main factors influencing the loading efficiency are determined, and a corresponding optimization design scheme is provided based on an analysis result of the influence factors, so that the loading efficiency of the fine-particle sediment is effectively improved, and the loading efficiency of the fine-particle sediment is improved. According to the technical scheme, quantitative control over the loading overflow time is achieved, the loading earthwork volume is increased, and overflow losses are reduced.

The invention relates to the technical field of soil physical parameter in-situ measurement, and discloses a soil layer natural water content portable intelligent measuring instrument based on multi-source sensing fusion, which comprises a composite probe assembly and an intelligent measurement and control host which are physically connected, the composite probe assembly is configured to be inserted into a soil layer to be tested to construct a multi-physical field test environment, and an electrical transceiving unit and an acoustic transceiving unit are integrated in the composite probe assembly. By constructing a cross physical field excitation and multiphase parameter collaborative decoupling mechanism, a multidimensional dynamic correlation model is established by using the thermosensitive drift characteristic of the sound velocity of a mixed medium during thermal disturbance and the transient step response of a dielectric constant under an acoustic radiation force field; the problems that the coupling influence of the water content and the volume weight cannot be distinguished and the conductivity of bound water and the conductivity of free water are difficult to separate in a traditional means are effectively solved, and four independent physical quantities including the volumetric water content, the in-situ dry volume weight, the bound water content and the actual conductivity of pore water are synchronously inverted through a single probe. And the decoupling precision of the equipment on complex multi-phase soil medium parameters is improved.

The invention discloses a water turbine local turbulence field prediction method, and relates to the technical field of water turbines. The method comprises the following steps: S1, data acquisition and preprocessing; s2, sparse measurement point feature extraction; s3, low-dimensional representation of the turbulent flow field; s4, carrying out double-model joint training; and S5, performing real-time prediction. According to the method, the global turbulent flow field prediction can be realized only by using the pressure / speed time sequence data of a small number of sparse measuring points in the water turbine runner, and an expensive full flow field experiment table does not need to be built or a dense sensor array does not need to be deployed. Compared with the traditional experimental measurement (the equipment cost is more than ten million yuan), the total investment of the sensor and the computing equipment is only ten thousand yuan, and the cost is reduced by more than 99%; meanwhile, the installation difficulty of the sensor in a high-flow-speed and high-pressure area is avoided, the existing monitoring point layout of a hydropower station can be directly adapted, the technology landing feasibility is remarkably improved, and the model architecture does not depend on a specific water turbine type and can be adapted to different types such as a mixed-flow type and an axial-flow type by adjusting grid parameters and training data.

The invention discloses a terahertz frequency band compact range testing system and a calibration method thereof, and belongs to the technical field of testing. The system comprises an integrated mobile platform which carries a signal generation device, a signal receiving and processing device, a focal length calibration mechanism, a feed source and a metasurface lens. The transmission-type metasurface is used for replacing a traditional metal reflecting face, the metasurface adopts the PCB plane machining technology, and the implementation difficulty is low; the metasurface is small in size and light in weight, a carried mobile platform can adapt to a more flexible test scene, the amplitude and phase of incident electromagnetic waves can be flexibly regulated and controlled by designing size parameters of the metasurface unit, and the position of a feed source can be automatically adjusted according to the test frequency for calibration.

The invention discloses a damage safety assessment method and system for a building service glass curtain wall, and the method comprises the steps: setting a plurality of damage conditions based on a glass curtain wall standard test piece, and building a function relation between the maximum panel deflection and the inherent frequency through a regression analysis method; calculating the maximum theoretical panel deflection according to specifications, substituting the maximum theoretical panel deflection into the function relationship to obtain a critical inherent frequency, and constructing a safety evaluation model according to the critical inherent frequency; and acquiring the actual inherent frequency of the curtain wall to be tested, and evaluating the damage safety state of the curtain wall according to the model. According to the invention, rapid and efficient safety assessment can be carried out on the active glass curtain wall without damaging the rubber material body, and large-area screening and regular inspection can be realized; field test provides real data, finite element simulation supplements multiple working conditions, and data accuracy and model universality are guaranteed; the obtained inherent frequency reflects the essential attributes of the structure, and the damage detection and evaluation sensitivity is high; according to the constructed evaluation model, the result is direct and reliable through comparison between a safety threshold value and actual measurement.

The invention discloses a self-adaptive test question generation method and device, a medium and equipment, and belongs to the field of test question generation. Multi-source learning data of a user is obtained and input into a user intention recognition model, and the learning intention category of the user is accurately determined. And according to the category, screening a matching template from a structured Prompt template library, and filling a slot in combination with user portrait data to generate a natural language Prompt. Then, knowledge fragments in the relay protection field knowledge base are retrieved and spliced through an RAG knowledge enhancement mechanism, an input sequence is formed, finally, a large language model is input to generate personalized relay protection field test questions, and the learning efficiency and experience are improved. The problem that the relay protection test questions cannot be accurately and efficiently generated in the prior art is effectively solved.

The invention discloses a loading structure optimization method based on stress wave analysis in open bench blasting. The method comprises the following steps: S1, performing rock mass blasting and stress wave theoretical analysis, researching a rock mass blasting rock breaking process and a breaking mechanism, deducing rock mass blasting mechanisms under different coupling media, and analyzing the influence of different coupling media on the blasting effect; and S2, calculating the initial delay detonation time according to the delay detonation rock blasting principle, and determining the optimal delay detonation time through numerical simulation calculation and field test demonstration. According to the method, a method combining theoretical analysis, numerical simulation and field test is comprehensively applied, a scientific and systematic charging structure optimization scheme is provided for open bench blasting, wide applicability and popularization value are achieved, progress of the open bench blasting technology can be promoted, and sustainable development of the mining industry is promoted.

The invention discloses a salt mine sediment void petroleum and brine migration simulation and parameter optimization evaluation method, which comprises the following steps: obtaining physical characteristic parameters of salt mine sediment, petroleum and brine, the sediment parameters at least comprising void ratio and pore connectivity obtained through CT scanning; calculating an evaluation index based on a simulation result, and performing quantitative evaluation and feasibility screening on the migration process; if the optimal potential exists, parameter optimization and scheme iteration are further executed, and a simulation-evaluation-optimization closed loop is formed; and finally, checking the model through field test data. The method solves the problem that in the prior art, no means for simulating and evaluating the two-phase migration of the petroleum brine in the salt mine sediment gaps exist, the process can be quantitatively simulated, evaluated and optimized, and scientific, accurate and systematic technical support is provided for petroleum storage through the high-impurity salt mine sediment gaps.

The invention discloses an aerospace field test case generation method based on a knowledge graph. The method comprises the following steps: establishing a test field knowledge graph model comprising four layers of entities, namely a test item, a test case, a test process and a problem list; identifying test entities from a historical test document, and establishing inclusion, execution, generation and association relationships among the entities; filling the identified entities and relationships into the knowledge graph model to construct a knowledge graph, and optimizing the constructed knowledge graph; based on an input test item of a to-be-tested item, recommending a most relevant test case entity and a relevant test process and question list information thereof in the constructed and optimized knowledge graph; and inputting the recommended test case, test process and question list information into the large model to generate a structured test case text conforming to a project language style and a test environment. The invention aims to solve the problems of insufficient structuralization, weak reasoning ability and poor dynamic adaptability of the existing test case generation.

The invention discloses an industrial control system security protection capability assessment method and system. The method comprises the following steps: acquiring key chip models, operating systems, monitoring software version information and service port information of n selected industrial control systems; the method comprises the following steps: acquiring a vulnerability list under a decision-making layer index and a corresponding threat value, constructing a fuzzy consistency judgment matrix from a target layer to a decision-making layer and from the decision-making layer to a scheme layer, performing fuzzy consistency verification on the constructed judgment matrix, calculating the weight of the decision-making layer index for the matrix passing the consistency verification, forming a weight matrix, and determining the vulnerability list according to the weight matrix. The evaluation results of the safety protection capability of the selected n industrial control systems are calculated through a fuzzy analytic hierarchy process, an analytic hierarchy model including hardware, software, protocols and other multi-dimensional indexes is constructed, vulnerability database retrieval and field test data are combined, a quantitative evaluation system is established through the fuzzy analytic hierarchy process, and the safety protection capability of the industrial control systems is evaluated. The method has the advantages of improving evaluation index systematicness, realizing multi-dimensional safety factor quantitative analysis and improving evaluation result objectivity.

The invention discloses an ice crystal field uniformity measuring device and method, and belongs to the technical field of ice crystal tests. The problem that in the prior art, the uniformity and stability effects of an ice crystal field are poor is solved. According to the technical scheme, the ice crystal field uniformity measuring device is calibrated; the side face of a frame of the ice crystal field uniformity measuring device is tightly attached to one side of the test section area, an external weighing sensor is used for measuring the mass of collecting bags on the two sides of the tested ice crystal nozzles, and the effective covering diameter of the single tested ice crystal nozzle is solved through drawing; according to the axial distance of the tested ice crystal nozzles, the width X of the ice crystal field test area and the height Y of the ice crystal field test area, the tested ice crystal nozzles are arranged, and ice crystal distribution of the test section area is guaranteed. The device is used for measuring the effective coverage diameter of the ice crystal jetted by the single ice crystal nozzle in the test area and the uniformity of the ice crystal field, the arrangement mode and the arrangement distance of the ice crystal nozzles can be adjusted according to the effective coverage diameter of the single ice crystal nozzle, and the coverage area of the ice crystal field in the test area is increased.

The invention discloses a photovoltaic water pump irrigation system, and relates to the field of photovoltaic technology, and the system comprises an illumination information collection module which is used for obtaining the radiation intensity distribution and environment temperature fluctuation data of a photovoltaic cell array in a target area, and combining the change of a light incident angle to obtain the illumination information of the photovoltaic cell array. Illumination information of different time periods every day is collected in real time through a sensor, and the output power performance of the array under specific seasonal illumination changes is judged. According to the photovoltaic water pump irrigation system, a remote monitoring platform is constructed by utilizing the Internet of Things technology, the running state of the system is monitored in real time, and faults are found and processed in time. The energy efficiency ratio and the operation stability of the system in a specific environment are verified through field tests, and a reliable irrigation solution is provided for remote areas.

The invention provides a roadway surrounding rock stability judgment method and a classified supporting method, and relates to the technical field of soil layer or rock drilling and mine safety. The method comprises the following steps: S1, determining roadway surrounding rock stability influence factors; s2, dividing a rock mass strength index, a surrounding rock stress index, a surrounding rock integrity index, a roadway size index, a coal pillar ruler habit index, a water spraying index and the like; s3, determining a roof strength stress coefficient, a roof integrity coefficient and a side loosening coefficient; s4, performing field investigation or testing to obtain a classification index value, and determining an index threshold value through a fuzzy clustering method; s5, determining classification of non-impact roadways and impact dangerous roadways according to the roadway impact dangerousness and the impact danger index; and S6, determining a roadway support mode according to the roadway surrounding rock stability classification. According to the method, more comprehensive influence factors are considered, parameters are more convenient to obtain, values of factors required by field test classification indexes are facilitated, and scientific support of roadway surrounding rocks is achieved.

The invention provides a logging data preprocessing system and a logging data preprocessing method. The logging data preprocessing system comprises a data standardization module, a rock core homing module, a lithology identification module, a mineral composition identification module, a porosity calculation module and a fracturing performance evaluation module. A continental facies shale gas logging comprehensive evaluation technical system is innovatively constructed through the technical means of logging curve standardization processing, core depth homing, multi-parameter lithology identification, nonlinear mineral component fitting, porosity model establishment, rock mechanical brittleness evaluation and the like. According to the method, the well logging interpretation coincidence rate is remarkably increased, shale gas exploration and development are effectively guided, key technical support is provided for well drilling fracturing and gas testing operation of a field test well, and remarkable economic benefits and application value are achieved.

The invention provides arthrobacter HJ1 for preventing and treating fungal root rot of polygonatum sibiricum and application of the arthrobacter HJ1, and belongs to the technical field of disease prevention and treatment. The preservation number of the arthrobacterium HJ1 is CCTCC (China Center For Type Culture Collection) NO: M20251843 The arthrobacter HJ1 has a remarkable inhibition effect on the pathogenic bacterium fusarium oxysporum of the rhizoma polygonati root rot. The arthrobacter HJ1 has a remarkable inhibition effect on the rhizoma polygonati root rot under an in-vitro condition, and can remarkably reduce scab expansion of the rhizoma polygonati root rot caused by fusarium oxysporum. In a field test, by using the arthrobacter HJ1, the morbidity of the rhizoma polygonati root rot can be remarkably reduced, and the control effect on the rhizoma polygonati root rot is improved. A safety test shows that the arthrobacter HJ1 has no adverse effect on the growth of the polygonatum sibiricum and can be safely used for preventing and controlling root rot fungal diseases of the polygonatum sibiricum. The arthrobacter HJ1, as a beneficial biocontrol bacterium for polygonatum sibiricum root rot fungal diseases, is of great significance to healthy and green development of the polygonatum sibiricum industry.

The invention discloses an in-situ detection device and method integrating an electrochemical impedance spectroscopy technology and static sounding, and aims to realize synchronous in-situ detection of macromechanical parameters and microcosmic electrochemical properties of a soil body so as to improve the comprehensiveness and accuracy of geotechnical engineering field test. The device comprises an electrochemical test probe rod, a static sounding annular probe and a test analyzer, and the electrochemical test probe rod is provided with a linearly arranged three-electrode system and is integrally installed through an insulation module; the static sounding annular probe is provided with a plurality of sensors; the test method comprises the steps of connection of the test analyzer and the probe rod, penetration of the probe into the soil body, electrochemical test parameter setting, impedance spectrum acquisition, data fitting analysis and the like. Compared with a traditional drilling collection method, the method has the advantages that the original state of the soil body can be effectively kept, and meanwhile, the stratum structure identification, the moisture distribution prediction and the unfrozen water content analysis are realized in combination with the microscopic information obtained by the electrochemical impedance spectroscopy and the static sounding mechanical indexes, so that the macroscopic and microscopic properties of the soil layer are comprehensively reflected.

The invention relates to the technical field of coal mine hydrogeology and environmental engineering, and discloses a coal mine groundwater flow-water quality coupling simulation method under mining disturbance condition, which comprises the following steps: step 1, mining disturbance area hydrogeology basic data acquisition: field investigation, drilling sampling, field test and long-term monitoring are carried out to obtain mining disturbance area hydrogeology basic data; the method comprises the following steps: acquiring landform, stratum lithology, geological structure, initial hydraulic gradient, porosity, initial permeability, initial pollutant concentration and hydrogeochemical parameters of a research area, and collecting a coal mining scheme, rock stratum movement observation data and fracture development characteristic parameters; according to the method, the dynamic hydrogeological parameter model is constructed, the water flow-water quality coupling control equation is established, numerical solution and accurate calibration are combined, and accurate simulation of the underground water flow field and the water quality migration process under the mining disturbance condition can be achieved.

The application belongs to the technical field of model test equipment, and discloses a model pile calibration tank testing device and a testing method thereof, which comprises a loading frame, a calibration tank, a model pile and an actuator. The calibration tank is placed on the lower side of the loading frame, the inner side of the calibration tank is provided with a top plate, the middle of the upper end of the top plate is connected with the loading frame through a load transmission rod, the actuator is arranged on one end of the upper side of the calibration tank, the model pile is arranged on the side of the actuator, the model pile is driven to move up and down by the actuator, and the bottom of the calibration tank and the top plate are respectively provided with openings corresponding to the model pile. The indoor calibration tank model pile test has good parallel test effect and good consistency with the field test result.

The invention discloses a tailing field damming test system and method for small and medium-sized tailing ponds, and belongs to the technical field of tailing pond damming field tests. The system comprises an ore pulp collecting and discharging system for collecting ore pulp and collecting the ore pulp to an ore pulp closed discharging facility; the ore pulp concentration adjusting system is used for injecting purified water into a concentration dilution facility through a purified water drawing device and distributing the purified water to a test chute through a concentration distribution device; and the damming test testing system is used for simulating the environment to rapidly solidify the ore pulp and synchronously collecting deposition parameters and samples. The problems that traditional damming test concentration adjustment is complex, the period is long, and the manual error is remarkable are solved. According to the system, negative-pressure collection and homogenization treatment of all-region tailing pulp are achieved through the ore pulp collecting and discharging system, the ore pulp concentration is accurately controlled through the ore pulp concentration adjusting system, the ore pulp is transferred to multiple chutes in a split-flow mode, and rapid solidification of the ore pulp, automatic data collection and sample packaging are completed in combination with the damming test system.

The application discloses a kind of consistency construction and multi-dimensional parameter joint setting method and system of space field of course beacon, it is related to aviation technology field, comprising: constructing the three-dimensional electromagnetic simulation model of course beacon antenna array, the radiation directivity diagram of antenna array and channel field type characteristics are analyzed;Antenna array is installed and checked and precision is reviewed;Determine that the radio frequency performance of full transmission link meets the requirements;According to correct transmission link, adopt the method of phase matching to carry out channel antenna pair phase matching and clearance antenna pair phase matching in turn, so that the phase of the radiation signal of each antenna pair is the same, and the spatial consistency of antenna pair is constructed;Near-field-far-field signal joint test setting is carried out, near-field test data and far-field test data are obtained, channel line, displacement sensitivity and clearance signal are evaluated, combined with simulation model and actual environment, complete multi-dimensional parameter joint setting.The method significantly improves the consistency and excellence of the final combined field pattern of the space field of the course beacon, and reduces the trial-and-error cost and rework times of flight verification.

The invention belongs to the technical field of hydrogen-fired aero-engine outfield tests, and provides a hydrogen energy engine mobile test system and method, and the method comprises the steps: carrying out the replacement through employing replacement gas and hydrogen in sequence before starting; carrying out first unsealing by using replacement gas and carrying out second unsealing by using hydrogen, providing hydrogen for the detected hydrogen energy engine to carry out false start detection, and carrying out false start inspection; starting performance debugging is divided into a plurality of debugging sections, the hydrogen supply amount of each debugging section is adjusted, and the tested hydrogen energy engine is subjected to running-in operation from a slow state until the maximum rotating speed is reached; steady-state performance debugging and acceleration and deceleration performance debugging are carried out under the designed working condition, and shutdown is carried out. According to the system and the method, the reliability and the safety of a hydrogen-fired aero-engine debugging test based on the mobile test bed can be guaranteed, and compared with a traditional aero-engine test system, the system and the method have more pertinence on safety protection and method flow design of hydrogen fuel.

The application discloses a bucket type cultivation method for overcoming continuous cropping obstacles of bamboo shoots. Through the bucket type inoculation, the mycelium is effectively isolated from the miscellaneous bacteria and pathogenic microorganisms in the soil before the mycelium completes the dominant expansion, the mycelium expansion stability is obviously improved, and the mycelium death and yield loss caused by the continuous cropping obstacles are avoided. Field tests show that the yield of the second year can be recovered to more than 90% of the yield of the first year by using the method, and the yield of the second year is less than 10% of the yield of the traditional reseeding mode, and almost no yield is obtained, so the method has good stability and generalizability.