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33results about How to "Solve the difficulty of obtaining" patented technology

Multi-pulse delay integral shaping method capable of achieving range gating space energy envelope

The invention discloses a multi-pulse delay integral shaping method capable of achieving range gating space energy envelope. In one frame of exposure time of a gating image device, laser pulses and gating pulses form M pulse pairs, gating delay coded modulation is carried out on the M pulse pairs according to target range gating space energy envelope geometric features so that subspace sampling areas at different distances can be sampled, intra-frame delay integral of M subgraphs is achieved in one frame of the exposure time of the gating image device, and ultimately one frame of a range gating slide image having the target range gating space energy envelope geometric features can be output. The method is good in adaptability and high on flexibility; the problem that it is difficult for a laser device with a pulse width non-adjustable to achieve energy envelope of range gating spaces of different shapes can be solved; the problem that due to the fact that rectangular square wave laser pulses are difficult to obtain, the range gating space energy envelope is hard to achieve can be solved; the selection range of pulse lasers used for three-dimensional imaging through range gating super-resolution is greatly widened.
Owner:INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI

Method for calibrating tidal flat DEM (digital elevation model) on basis of remote sensing water lines

The invention discloses a method for calibrating a tidal flat DEM (digital elevation model) on the basis of remote sensing water lines. The method includes particular steps of collecting multi-source and multi-temporal remote sensing images of tidal flat regions and extracting the water lines; building an initial DEM according to historical terrain data; building a two-dimensional tidal level numerical simulation model on the basis of the initial DEM and verifying the model by the aid of measured tidal station data; computing tidal flat exposure regions at acquisition moments of the corresponding remote sensing images by the aid of the two-dimensional tidal level numerical simulation model, comparing the tidal flat exposure regions to the water lines at the corresponding moments, comparing the tidal flat exposure regions to a next water line if the tidal flat exposure regions are matched with the previous water lines, or correcting the tidal flat exposure regions if the tidal flat exposure regions are not matched the previous water lines; calibrating the DEM by the aid of the multiple water lines by the same process, matching all the water lines with the exposure regions computed by the aid of the two-dimensional tidal level numerical simulation model and outputting the optimal result of the DEM. The method has the advantages that the optimal realistic DEM data can be generated for the tidal flat regions with shortage in terrain data, the method is speedy, efficient, simple and feasible, and operation is convenient.
Owner:HOHAI UNIV

Coal mining machine rocker arm mechanical transmission system fault accurate positioning method

The invention belongs to the technical field of coal mining machine rocker arm mechanical transmission system fault diagnosis, and particularly relates to a coal mining machine rocker arm mechanical transmission system fault accurate positioning method. The method comprises the steps of 1, collecting rocker arm vibration signals in normal and fault states, and performing noise reduction processingon the rocker arm vibration signals through a wavelet transformation method; 2, performing FFT conversion to obtain a spectrogram of the vibration signal; 3, performing comparative analysis on the normal rocker arm spectrogram and the fault rocker arm spectrogram to obtain vibration characteristic frequency of a fault part, and performing preliminary positioning on the fault part; 4, comparing and analyzing the continuous complex Morlet wavelet envelope demodulation spectra of the normal rocker arm and the faulty rocker arm to obtain the rotation frequency of the faulty part; and 5, accurately positioning a faulty part by combining adaptive continuous complex Morlet wavelet envelope demodulation analysis with FFT. The method has important practical significance for guaranteeing safe operation of the coal mining machine, changing preventive periodic maintenance into predictive maintenance, safely and efficiently producing a coal mine, improving the maintenance efficiency and reducing the maintenance cost.
Owner:XIAN UNIV OF SCI & TECH

Ground reconnaissance robot gesture control system and method based on binocular vision

The invention relates to a ground reconnaissance robot gesture control system and method based on binocular vision. The ground reconnaissance robot gesture control system comprises a display, a binocular camera device, a control ring and a human-machine interaction control system, wherein the display, the binocular camera device and the control ring are connected with the human-machine interaction control system; the display is used for displaying scene images shot by a reconnaissance robot; the binocular camera device is used for collecting gesture images of an operator; the control ring is used for controlling the movement of a ground reconnaissance robot body and the movement of a mechanical arm; and the human-machine interaction control system is used for processing the gesture images shot by the binocular camera device into three-dimensional coordinates of fingertip points, and then sending the three-dimensional coordinates of the fingertip points to the robot for execution. According to the ground reconnaissance robot used for a multi-degree-of-freedom mechanical arm, by combining the control finger ring and the binocular camera device, the position movement of the robot and the angle and height change of the camera are achieved, and the reconnaissance task is completed.
Owner:QILU UNIV OF TECH

Intensive energy-saving base station machine room

The invention discloses an intensive energy-saving base station machine room, and relates to the technical field of communication networking equipment, in particular to a communication base station machine room. A containing unit convenient to use and a long-time reliable running environment are provided for communication equipment and matched equipment. The base station machine room comprises a machine room wall, a top cover, a base, a left temperature control door, a right temperature control door, a base transceiver station, an equipment supporting frame, a storage battery, a storage battery supporting frame, a frame assembly, a power distribution module, a switch power source, a 24-core optical fiber wiring subframe, a wire feeding window, a grounding copper bar and a frame assembly, wherein the top cover is assembled on the upper portion of the machine room wall, the base is assembled on the lower portion of the machine room wall, a wire feeding window is arranged on the right rear side of the machine room wall, the grounding copper bar is assembled below the wire feeding window, the left temperature control door and the right temperature control door are installed on the front side of the machine room wall, a compressor air conditioner is installed on the left temperature control door, a semiconductor refrigerating air conditioner is installed on the right temperature control door, a plurality of mounting stand columns are installed in the machine room, the machine room is divided into a left unit and a right unit, the left unit is an equipment cabin, and the right unit is provided with a matched cabin and a storage battery cabin.
Owner:ZHONGTIAN BROADBAND TECH +1

Method for obtaining constitutive parameters of zirconium alloy irradiation deformation single crystal

The invention relates to the technical field of heavy water reactor material equipment design and evaluation, in particular to a method for obtaining zirconium alloy irradiation deformation single crystal constitutive parameters. The method comprises the following specific steps: collecting plastic deformation test or actual measurement parameters of zirconium alloy caused by irradiation deformation; simulating observed alloy deformation by adopting a finite element method or a finite volume method on the basis of a polycrystalline irradiation deformation constitutive structure under an irradiation condition; based on the simulation result, calculating the anisotropy coefficient of the irradiation plasticity of the polycrystal; and obtaining the apparent single crystal constitutive structure by utilizing the anisotropy coefficient and combining a genetic algorithm. Compared with the prior art, the method has the advantages that the problem that the constitutive parameters of the single crystal are difficult to obtain when the radiation deformation of the nuclear-grade zirconium alloy is predicted by utilizing a mesomechanical model can be well solved; the obtained apparent single crystal constitutive parameters can be used for obtaining irradiation deformation prediction of nuclear-grade zirconium alloy.
Owner:SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD

Device for improving quality of plant materials through hot pressing

InactiveCN107081925AImprove qualityReduce harvestingShaping pressEcological environmentSlag
The invention discloses a device for improving the quality of plant materials through hot pressing and belongs to the technical field of machining. Based on the composition of the plant materials and chemical and physical properties, proper heating is adopted for softening lignin to improve plasticity of the plant materials, the proportions of space occupied by various gaps such as cavity hole concaves of the plant materials is reduced through pressurizing, density and strength of the plant materials are improved, and the quality of the plant materials is greatly improved. Low-quality plant materials become good-quality plant materials high in density and high in strength. The problems about ecological environment protection, reduction and stopping of cutting of forests especially good-quality forests and the requirement of economic society development and people life for a large amount of good-quality wood are solved, meanwhile, comprehensive, good-quality and efficient utilization of agricultural and forestry byproducts is achieved, the problem that straw leaves pollute the atmosphere environment is solved, and wide and low-cost application of high-density and good-quality plant materials becomes feasible. The device can also be used for town and country construction and treating of slag mucks and the like or common soil and stone materials can be used for manufacturing various building materials and buildings such as slate bar tables, chairs, kiosks and bridges and the like.
Owner:董沛 +2

Thermal resonance fusion reactor

The invention provides a thermal resonance fusion reactor which belongs to the fusion reactor technology field. Based on the principle of thermal resonance fusion, a third technically feasible thermal resonance fusion type reactor is used in addition to the magnetic confinement and inertial confinement fusion modes. The main container in the reactor core is provided with a shielding layer and a thermal resonance fusion component and can use a variety of gas fusion fuels for fusion simultaneously. Under ordinary conditions or in conditions with not so high temperatures, through the nickel playing a catalytic role or platinum-based thermal resonance fusion materials, the atoms of the gas fuels attached on the materials are forced thermal vibrations so that sharp resonance can be generated between two fuel atoms under the condition with proper temperatures and high and sufficient kinetic energy for fusion reactions can be obtained. With one fusion product leading to other fusion reaction, it is possible to achieve sustained fusion reactions in a controlled manner and to actually practice the safe application in technology and engineering of fusion nuclear power. The shielding layer is capable of producing isotopes. The fusion reactor of the invention can be widely used in small medium sized and large energies. It can also be used as a neutron source.
Owner:董沛 +2

Talent online interview data analysis system and method based on Internet

The invention discloses a talent online interview data analysis system and method based on the Internet. The system comprises an interview background acquisition module, an interview background confusion degree analysis module, a limb movement acquisition module, a limb position positioning module, a limb movement confusion degree analysis module, a sight line position positioning module, a sight line position deviation analysis module, a voice recognition module, a voice coherence degree analysis module and an interview data comprehensive analysis module. The invention has the beneficial effects that through the confusion degree of the interview background, the confusion degree of the limb movement of the interviewer, the sight position deviation degree of the interviewer and the voice coherence degree, according to the interview background confusion degree, the body movement confusion degree, the sight line position deviation degree and the voice coherence degree, the comprehensive evaluation of the interviewer in the interview can be calculated, the difficulty of obtaining body language information in the traditional online interview process can be solved, and the evaluation of the interviewer is more comprehensive.
Owner:深圳市启程教育科技有限公司

Internet-based talent online interview data analysis system and method

The invention discloses an Internet-based talent online interview data analysis system and method, including an interview background collection module, an interview background confusion degree analysis module, a body movement acquisition module, a body position positioning module, a body movement confusion degree analysis module, and a line of sight position positioning module, line of sight position deviation analysis module, speech recognition module, speech coherence analysis module, and interview data comprehensive analysis module, the beneficial effects of the present invention are: through the degree of confusion of the interview background, the degree of confusion of the interviewer's body movements and the interviewer's The degree of line of sight deviation and the degree of voice coherence, so as to calculate the comprehensive evaluation of the interviewer for the interview based on the degree of confusion of the interview background, the degree of body movement confusion, the degree of line of sight position deviation and the degree of voice coherence, which can solve the traditional online interview process. The difficulty of obtaining information and making the evaluation of interviewers more comprehensive.
Owner:深圳市启程教育科技有限公司

A Method for Determining Rainstorm Intensity Formula

InactiveCN106529140BSave derivation timeReduce the difficulty of derivationInformaticsSpecial data processing applicationsMedicineStorm intensity
The present invention provides a storm intensity formula determining method. The method comprises: acquiring local parameters in a historical storm intensity formula, and a period of time of adopted rainfall data; acquiring a period of time of new rainfall data; reversing a historical ITP table used when the historical storm intensity formula is deduced; selecting a distribution function form with a smallest fitting error, and reversing historical rainfall data with different frequencies; sampling the acquired new rainfall data by using an annual maximum method, and fusing with the historical rainfall data; performing frequency analysis to obtain a full information ITP table; and performing local parameter deduction of the storm intensity formula, screening an optimal local parameter, and obtaining an optimal new storm intensity formula. The method provided by the present invention solves the problem that old rainfall information data is hard to be acquired, avoids the problem that a large amount of rainfall data is sampled repeatedly, reduces the difficulty of storm formula deduction, and saves time for storm formula deduction. The method can be used as a deduction method for revising the storm intensity formula subsequently, which is time-saving and effort-saving and simple for operation.
Owner:SHENYANG JIANZHU UNIVERSITY

Treatment method for root system biomass of tree in karst region

The invention discloses a treatment method for root system biomasses of a tree in a karst region. The treatment method comprises the steps of: 1) using the digging end of a digging and chopping dual-purpose pickaxe for digging surface soil open to expose a root system; 2) using the chopping end of the digging and chopping dual-purpose pickaxe for chopping side roots around a trunk; 3) after the side roots are chopped, pulling out the root system while using the pickaxe for digging the soil along the root growth direction; 4) after the side roots around the trunk are cleared, taking out the soil and using a steel shovel for obliquely and downwards cutting off a main root to gradually cut off the main root; 5) in the digging process, using the steel shovel for vertically cutting off main stressed side roots, and after the stressed side roots are separated from the main root, rooting up the tree; and 6) after the tree falls down, taking out all roots for clearing, and after non-root substances are cleared, classifying by stump, large roots, medium roots and small roots to obtain biomass data. The treatment method is feasible, the tools are simple to manufacture and are simple and convenient to operate, the time and the labor are saved, the root system of the tree can be obtained to the utmost extent and the accuracy of the data is guaranteed.
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI

Shale physical model and preparation method and device of saturated oil shale core sample

The invention provides a shale physical model and a preparation method and device of a saturated oil shale core sample, the shale physical model comprises sand grains, a cementing agent and a water-absorbing solid-phase cementing material, and the shale physical model is formed by spraying the uniformly mixed sand grains and solid-phase cementing material with the cementing agent diluted by water and then pressing; the preparation method of the saturated oil shale core sample comprises the following steps: uniformly mixing sand grains and a solid-phase cementing material with water absorption; diluting the cementing agent with water; spraying a cementing agent solution on the solid-phase raw material and uniformly mixing; and soaking the to-be-pressed raw material in the oil liquid for pressing. According to the shale physical model, by means of the water-absorbing solid-phase cementing material, under the dual action of the cementing agent and the solid-phase cementing material, the cementing quality is guaranteed, a pore structure with the characteristics of shale is formed, a saturated oil shale core sample is pressed in an oil phase environment, and the shale core sample is obtained. And the distribution condition of the oil phase in the pores in the actual shale oil reservoir is completely simulated.
Owner:PETROCHINA CO LTD

thermal resonance fusion reactor

The invention provides a thermal resonance fusion reactor which belongs to the fusion reactor technology field. Based on the principle of thermal resonance fusion, a third technically feasible thermal resonance fusion type reactor is used in addition to the magnetic confinement and inertial confinement fusion modes. The main container in the reactor core is provided with a shielding layer and a thermal resonance fusion component and can use a variety of gas fusion fuels for fusion simultaneously. Under ordinary conditions or in conditions with not so high temperatures, through the nickel playing a catalytic role or platinum-based thermal resonance fusion materials, the atoms of the gas fuels attached on the materials are forced thermal vibrations so that sharp resonance can be generated between two fuel atoms under the condition with proper temperatures and high and sufficient kinetic energy for fusion reactions can be obtained. With one fusion product leading to other fusion reaction, it is possible to achieve sustained fusion reactions in a controlled manner and to actually practice the safe application in technology and engineering of fusion nuclear power. The shielding layer is capable of producing isotopes. The fusion reactor of the invention can be widely used in small medium sized and large energies. It can also be used as a neutron source.
Owner:董沛 +2

Rotating speed and flow optimizing method and system for variable-speed operation of mixed-flow water turbine

The invention relates to a rotating speed and flow optimizing method and system for variable-speed operation of a mixed-flow water turbine, and belongs to the field of water turbine parameter optimizing processing. The method comprises the following steps: firstly, conducting tangent drawing processing on an existing mixed-flow water turbine model comprehensive characteristic curve to obtain a plurality of tangent points; connecting the plurality of tangent points with optimal working condition points in the mixed-flow water turbine model comprehensive characteristic curve, and determining an optimal path for the variable-speed operation of the mixed-flow water turbine; on the mixed-flow water turbine model comprehensive characteristic curve, determining the unit flow and the unit rotating speed at the intersection point of the optimal path and each equal guide vane opening line; and finally, calculating the optimal rotating speed and the optimal flow of the mixed-flow water turbine under any water head and guide vane opening combination according to the unit rotating speeds and the unit flows. According to the method, the optimal rotating speed and the optimal flow of the mixed-flow water turbine under any water head and guide vane opening combination can be calculated by utilizing existing basic data, and the overall hydraulic efficiency of the mixed-flow water turbine can be effectively improved.
Owner:KUNMING UNIV OF SCI & TECH

A method of mountain torrent disaster risk assessment based on polymorphic system theory

The invention relates to a mountain torrent disaster risk evaluation method based on a polymorphic system theory. The method includes the following steps: collecting data; carrying out mountain torrent disaster status survey; grading influence factors; establishing a model; and determining different risk grades. Through collection and arranging of basic information of hydrology and landform with a small basin being a unit, technological means such as GIS, satellite remote sensing and hydrological analytical calculation is fully utilized to extract related data, combined with mountain torrent disaster field survey data, a small-basin rainstorm flood analysis is made, a mountain torrent-threatening residential area mountain torrent disaster status defense capability is evaluated, and village danger zones along a river are scientifically divided, through analysis evaluation, basic characteristics of small-basin rainstorm flood of a mountain torrent disaster danger zone and a personnel and property distribution situation are mastered relatively comprehensively and accurately, a relation among a rainstorm, mountain torrents and a disaster is analyzed, and critical rainfall of villages, market towns and towns along the river that may cause occurrence of a mountain torrent disaster is analyzed, thereby providing support for further improving a mountain torrent disaster prevention and control capability and sustainable development of social economy.
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES

Treatment method for root system biomass of tree in karst region

The invention discloses a treatment method for root system biomasses of a tree in a karst region. The treatment method comprises the steps of: 1) using the digging end of a digging and chopping dual-purpose pickaxe for digging surface soil open to expose a root system; 2) using the chopping end of the digging and chopping dual-purpose pickaxe for chopping side roots around a trunk; 3) after the side roots are chopped, pulling out the root system while using the pickaxe for digging the soil along the root growth direction; 4) after the side roots around the trunk are cleared, taking out the soil and using a steel shovel for obliquely and downwards cutting off a main root to gradually cut off the main root; 5) in the digging process, using the steel shovel for vertically cutting off main stressed side roots, and after the stressed side roots are separated from the main root, rooting up the tree; and 6) after the tree falls down, taking out all roots for clearing, and after non-root substances are cleared, classifying by stump, large roots, medium roots and small roots to obtain biomass data. The treatment method is feasible, the tools are simple to manufacture and are simple and convenient to operate, the time and the labor are saved, the root system of the tree can be obtained to the utmost extent and the accuracy of the data is guaranteed.
Owner:INST OF SUBTROPICAL AGRI CHINESE ACAD OF SCI
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