160results about How to "Realize research" patented technology

The invention discloses a multi-degree-of-freedom vehicle dynamics test platform which comprises a double-rod vertical loading hydraulic cylinder with an axial force sensor, a measurement and control system, a roller, a rotating disk, a position servo hydraulic cylinder, a six-degree-of-freedom Stewart platform, an outer rotor motor, a six-force-component sensor and the like. The use of the multi-degree-of-freedom vehicle dynamics test platform can simulate the changes of geometrical shape and mechanical properties of a road pavement and the incentive role of the changes to wheels, the exertion of any one-dimensional or multi-dimensional force in six-dimensional pavement incentive force on the wheels can simultaneously carry out pavement simulation, static load simulation and dynamic load simulation, and the wheels can change the direction relative to the roller, thereby realizing the simulation of large tire sideslip angle caused by turning of a vehicle, being capable of measuring steering angles of the wheels and six-dimensional force born on the wheels, carrying out better simulation and testing on the practical driving working status of the vehicle, realizing the comprehensive research of the multi-degree-of-freedom vehicle dynamics and providing the vehicle dynamics test platform with more excellent performances.

The invention relates to a visible multifunctional fracture seepage simulation test bench, which is applicable to simulation of seepage tests of fractured rock masses in geotechnical, geological, water conservancy, hydropower and other projects. A plurality of transverse, longitudinal and oblique water inlet and outlet fracture channels which are mutually communicated are formed on a bench top of the test bench, prefabricated fractured blocks are arranged in the fractured channels, fracture water-penetrating interfaces of all the fracture channels are respectively provided with water inlet and outlet pipes for constituting a circulation path with a water pump, flow sensors, pressure sensors and control valves are sequentially respectively arranged on the water inlet and outlet pipes, sand inlet ports are respectively arranged at inlets of all the water inlet pipes, and a sand adding funnel is arranged above each sand inlet port; and rubber seal pads are arranged on two sides of each fracture channel, and transparent cover plates are fixed on the rubber seal pads. The test bench can complete the measurement of test data required in the existing tests and effectively make up for the deficiencies of using rock samples for testing by observing the migration of fillers in fractures through an observation surface. The test bench has simple structure, convenient operation and good test effect.

The invention provides an oil field geographic information and exploration development collaboration work platform system. The system comprises an exploration development part and a geographic information part. The exploration development part comprises a data layer, an application service layer and a service research layer. The data layer quotes from external data, sets up various databases, and provides the support for the application service layer and the service research layer. According to the geographic information part, integrated platform database building, GIS service function development, data service function development, system service function development and ground geographic information and underground exploration development combination are involved. Ground and underground information system deep fusion is achieved, the oil reservoir geology and an oil reservoir are dynamically unified, ground engineering and underground geology are unified, exploration information and development information are unified, oil field digitalization construction is promoted, and a powerful guarantee is provided for production capacity constructing and potential tapping of an oil field.

The present invention discloses a main bearing reduced scale performance test bench of a large wind turbine. The main bearing reduced scale performance test bench of the large wind turbine comprises a fixed platform, a driving device, a rotor device, a loading device, a hydraulic system, a control device and a test system. The driving device, the rotor device and the loading device are fixedly connected with the fixed platform in turn, and the test system is installed between the outer ring transitional disk and the inner ring transitional disk of the loading device. The main bearing reduced scale performance test bench of a large wind turbine is able to satisfy integrated performance tests with different types and sizes; and the simulation of the actual loaded condition of the main bearing may be performed through combined loading of oil cylinders at different positions, and the synchronous measurement of performance parameters such as the temperature, the vibration, the rotating speed, the friction torque, the static tensile strain of the bearing, and the like are realized. Therefore the test cost of the wind power main bearing is greatly reduced, and the main bearing reduced scale performance test bench of a large wind turbine has an important significance for China wind power bearing technology development.

The invention discloses a sand layer three-dimensional grouting test device capable of simulating actual working conditions, and a test method thereof. Different crustal stress conditions and different pore water pressures can be simulated according to actual grouting requirements, meanwhile soil samples with different proportions can be made according to test demands to simulate different sand layer characteristics, after grouting, the volume change amount and the axial displacement change of the soil sample in a rubber film can be observed by a volume strain measuring device and an axial displacement measuring device, images obtained before and after the grouting are compared to obtain a deformation value of the middle of the rubber film, and then reasonable grouting pressure and slurryratios under different working conditions and sand layer characteristics are researched according to the obtained volume change amount and the axial displacement change of the soil sample, and the deformation value of the middle of the rubber film, and the mechanical properties of a grouting body are also detected. In addition, a grouting tube of the test device can be changed according to the engineering and experimental needs, the simulation and research of a radial grouting process are achieved, and the mechanical effect of radial grouting is tested.

The invention discloses a multifunctional vehicle dynamics dynamical characteristic test bed with a loading device, comprising a rotary encoder, a torque motor, a longitudinal guide rail, a horizontal guide rail, a rotating disc, an outer rotor motor, a force sensor and a torque sensor, a rotary drum, a tyre flange, a horizontal loading hydraulic cylinder with the force sensor, a horizontal loading matching hydraulic cylinder with the force sensor, a vertical loading hydraulic cylinder with the force sensor, an angle sensor, a loading bracket, a rotating speed sensor, a centering roller lifter, a centering roller, a motor, a measurement and control system, and the like. The invention can be used for exerting longitudinal force and vertical force on vehicle wheels and loading horizontal force and aligning resistance torque at the same time, simulating the turning driving of a vehicle by turning the vehicle wheels with the rotary drum together, measuring the turning angles of the vehicle wheels, better simulating the actual driving work conditions of the vehicle and realizing the comprehensive research of integral vehicle dynamics, and provides the vehicle dynamics test bed which has better performance.

The invention discloses a true-triaxial coal and gas adsorption-desorption and outburst test device system. The true-triaxial coal and gas adsorption desorption and outburst test device system comprises a cylindrical coal sample chamber structure which is formed by sequentially connecting a plurality of cylindrical units, wherein a plurality of pressure and temperature sensors are uniformly arranged on the outer circumference of each cylindrical unit, four loading devices are symmetrically arranged on the outer circumference of each cylindrical unit, the loading devices stretch into an inner cavity of each cylindrical unit along the radial direction of the cylindrical unit to be connected with loading plates, and lateral stress is applied to briquette coal in the inner cavity of each cylindrical unit by the loading plate; two ends of the cylindrical coal sample structure are respectively provided with a counterforce cover, a surface-type inflating loading disc with the inner side surface being communicated with the inner cavity of the cylindrical coal sample chamber structure is arranged in the counterforce cover on one end and is used for applying the axial pressure, a coal and gas outburst opening is formed in the other end, and an instantaneous release mechanism is arranged in the coal and gas outburst opening. The invention also discloses a test method utilizing the device. By adopting the test device and the test method, the adsorption-desorption characteristics of briquette coal to the gas and the gas outburst mechanism under the condition of different ground stress and different gas pressure can be researched.

The invention discloses a multifunctional testing platform of the dynamic characteristics of vehicle dynamics, which comprises a rotary coder, a synchronous belt, a moment motor, a retaining ring, a bearing, a motor slide block, a shaft sleeve, a longitudinal guide rail, a transversal guide rail, a fixed square plate, a steel ball, a steel ball fixing frame, a rotating disc, a moment sensor, a brake disc, a cylinder bracket, a cylinder shaft, an outer rotor motor, a force and moment sensor, an arrester bracket, an arrester, a cylinder, a measurement and control system, a code disc, a rotating speed sensor, a centering roller bracket, a centering roller lifter and a centering roller. By the invention, the whole vehicle dynamics is comprehensively researched on the testing platform, a driving or brake moment and a steering resisting moment are applied to wheels, and the wheels are permitted to steer in rotating motion so that more working conditions can be imitated by applying driving or braking moment on wheels and permitting the wheels to steer during rotating motion. The multifunctional testing platform can test and research the dynamic characteristics of vehicle longitudinal dynamics and transversal dynamics. The attached figure is the structural front view of the invention.

The invention relates to a security test system and a security test method of an intelligent power grid industrial control network. The system has the technical characteristic of comprising a transformer substation layer and a spacing layer, wherein the transformer substation layer comprises an upper control host and an analog attack host; the spacing layer comprises multiple pieces of embedded secondary equipment; a network data switch is connected between the transformer substation layer and the spacing layer; the upper control host, the analog attack host and the multiple pieces of secondary equipment are separately connected with the network data switch, used for achieving data communication between the transformer substation layer and the spacing layer; and the network data switch isalso connected with a flow monitoring host, used for monitoring the flow of the industrial control network in a bypass manner. The system and the method provided by the invention accords with an IEC 61850 communication specification, and simulates the secondary equipment in an intelligent power grid via the embedded equipment, and simulates a transformer substation control host in the intelligentpower grid via a PC host, so that the rate analysis and test on the IEC 61850 industrial control network security problem can be achieved.

A measuring point arrangement method suitable for hypersonic flight test transition research is disclosed. The measuring point arrangement method is achieved through the following modes: S1, determining whether the natural transition or the forced transition is to be measured according to measurement requirements, and if the natural transition is to be measured, then going to S2; if the forced transition is to be measured, then going to S3; S2, measuring a main flow transition condition and / or a transition condition of a cross flow effect according to measurement requirements, wherein when themain flow transition condition is measured, a measuring point is arranged on a streamline of a hypersonic aircraft in the main flow direction; when the transition condition of the cross flow effect is measured, the measuring point is arranged at a position with a cross flow velocity in the lateral direction; the main flow direction is the central streamline direction of the aircraft and the streamline direction with an included angle of not more than 3 degrees with the central streamline direction; S3, arranging a rough element at a predetermined position on the aircraft, and arranging the measuring point at the downstream of the streamline where the rough element is located; and the measuring point positions realize the measurement of the physical quantity of the surface of the aircraftin the flight test process by installing sensors.

The invention discloses a method and a device for classifying a traffic zone, which relates to the traffic information field, and is characterized in that a classified traffic zone can accurately reflect the intrinsic traffic characteristics in real time. A scheme is as follow: a zone to be classified is gridded according to a real road network; communication record quantity of each base station in each grid is acquired within a first preset time period, and a quantity discrete value corresponding to each base station is obtained; sum-and-square difference comparison is conducted for the quantity discrete value of each base station and a preset group of characteristic curves, and a minimal error characteristic curve with the minimal sum-and-square difference of the quantity discrete value of each base station is selected; the corresponding base station with the same minimal error characteristic curve is classified into the same base station type; the quantity ratio of base stations of the same base station type is calculated in each grid; the type of the grid is determined according to the base station type with the maximal quantity ratio of the base stations in the grid; and the adjacent grids with the same grid type are merged to form a traffic zone. The method and the device are used for classifying the traffic zone.

The invention discloses a multi-angle adjustable device for testing a sample simultaneously bearing tensile and shear forces. The multi-angle adjustable device is composed of a pair of fastening loading devices. Each one fastening loading device comprises a connecting fastening component and a loading clamping plate. The connecting fastening component is divided into a connecting plate and a fastening plate. The middle of the fastening plate is provided with a sample hole. The loading clamping plate is movably connected to the connecting plate so that the loading clamping plate is directed tothe centroid of the sample. Through change of the joint position between the loading clamping plate and the connecting plate, the sample angle can be changed. The fastening plate is welded to the connecting plate. The device can be used for testing a bolt or a rivet simultaneously bearing tensile and shear forces so that the mechanical properties of the bolt or rivet under combined action of tensile and shear forces along the rod axis direction are researched and the failure criterion under tensile and shear forces is obtained.

The invention discloses a thalassemia gene detection method based on a high-throughput sequencing technology. The thalassemia gene detection method mainly comprises the following steps that alpha & beta-thalassemia related gene fragments are specifically amplified based on PCR amplification primers of a span breakpoint and a mutation site designed by adopting a Gap-PCR method, library establishment is conducted on PCR products, library products are subjected to high-throughput sequencing, sequencing data uses a human genome hg19 as a reference sequence, sequencing depth values of gene loci in a target area chr16: 215000-236000 are analyzed according to a sequence alignment score Q10, and alpha-thalassemia deletion types are determined according to the distribution of the sequencing depth values of different loci; meanwhile sequence alignment is performed through the target area chr16: 215000-236000 and a target area chr16: 5246400-5248600, and alpha & beta-thalassemia mutation types are determined according to the basic types of specific sites. By the adoption of the thalassemia gene detection method, simultaneous detection of 6 mutation genetypes of alpha-thalassemia and 26 mutation genetypes of beta-thalassemia can be achieved.

The invention provides a synthetic seismogram method and a synthetic seismogram device, and relates to the field of seismic exploration. The method comprises the following steps: getting the stratum model, seismic wave frequency and seismic wavelet of a target work area, wherein the stratum model includes at least one type of interface, and there is at least one interface of each type; calculating the reflection coefficient of each stratum according to the stratum model and the seismic wave frequency, and getting a reflection coefficient matrix containing frequency-dependent reflection coefficients; calculating the synthetic seismogram spectrum of each moment according to the reflection coefficient matrix and the seismic wavelet; and carrying out Fourier inverse transform on the synthetic seismogram spectrum to get a synthetic seismogram of all moments. Both a conventional wave impedance interface of which the media on both sides are homogeneous isotropic media and a special interface of which the media on both sides are homogeneous anisotropic media can be calculated. A synthetic seismogram method applicable to unconventional oil and gas reservoirs such as thin or viscoelastic reservoirs is provided. A geological assurance is provided for accurate exploration and efficient development of oil and gas resources.

The invention relates to a preparation method of injectable nano-short fibers loaded with an anti-cancer medicine. The preparation method comprises the following steps: loading the anti-cancer medicine DOX (Doxycycline) on MWNTs (multi-walled carbon nanotubes) with a hollow structure to obtain MWNTs powder loaded with the DOX; carrying out electrostatic spinning on the MWNTs powder loaded with the DOX and biodegradable macromolecular PLGA (poly(lactic-co-glycolic acid)) under a specific condition to obtain a compound nano-fiber membrane; finally, carrying out crushing and homogenization treatment on the compound nano-fiber membrane to prepare the injectable nano-short fibers loaded with the anti-cancer medicine. The injectable nano-short fibers loaded with the anti-cancer medicine have a good releasing performance, can be used for injecting, has high medicine utilization rate and high stability and can be used for more accurately, effectively and safely treating tumor parts; the injectable nano-short fibers loaded with the anti-cancer medicine have good blood compatibility and cell compatibility, can be used for killing cancer cells and do not cause injuries to normal tissue cells of human bodies; the injectable nano-short fibers can emit two types of fluorescent light, are swallowed by human body cells and can be used for researching a cancer cell treatment mechanism.

The invention discloses a vector transcranial magnetic stimulation method on the basis of trend of nerve fibers. The vector transcranial magnetic stimulation method includes determining stimulation directions of target cranial nerve fibers; overlaying positions of points with the most intensive stimulation generated by coils and the positions of target stimulation points; enabling the directions of most intensive magnetic fields generated by the coils to coincide with target stimulation directions; respectively computing induced electric field vectors and induced current vectors of prime spots of various space bodies of cranial nerve fibers on the basis of the trend of the target cranial nerve fibers. The vector transcranial magnetic stimulation method has the advantages that the nerve stimulation spatial resolution can be improved, the target stimulation nerves can be positioned by users according to experimental requirements, the coils are matched with the positions of the nerves, and accordingly predictable stimulation results can be realized; the induced electric field vectors and the induced current vectors on the basis of positional relations between the coils and the nerve fibers can be estimated, and the induced electric field vectors and the induced current vectors on the basis of the trend of the target nerve fibers can be computed by the users according to positional relations between the coils and cerebral stimulation regions.

The invention provides a method and a medium for extracting green degree space of an urban agglomeration. The method comprises the following steps: acquiring high-score remote sensing data of urban agglomeration and extracting land cover data of urban agglomeration; Obtaining the social perception data of urban agglomeration, and extracting the social function attribute data of urban agglomerationland; According to the cover data and social function attribute data, the land of urban agglomeration is classified, and the information about the land and greenness of urban agglomeration is obtained. According to the classification information, the greenness of urban agglomeration is extracted. The present invention solves the problem that only a single remote sensing data can obtain the land cover information in the related art, and the social function attribute of the urban green space cannot be obtained, and realizes the statistics and research of the urban agglomeration green space containing the social function attribute.

The invention relates to an experimental device for forming jet flow by drifting water with a high-speed airflow and generating supersaturated total dissolved gas, which comprises a water column, a flowmeter, an air compressor, valves, a total dissolved gas determinator, a water pump, a jet pipe, a nozzle and a nozzle hole. The water column is designed into a main water column and an auxiliary water column, the nozzle hole in the wall of the main water column is connected with a rubber hose, a third valve is mounted on the rubber hose and communicated with the auxiliary water column, the air compressor is connected with one end of the flowmeter by a first valve, the other end of the flowmeter is connected with the jet pipe by a three-way pipe, the jet pipe is connected with the nozzle which is arranged in the main water column, the three-way pipe is connected with the water pump by a second valve, the water pump is arranged in the auxiliary water column by a pipeline, a fourth valve is mounted at the bottom of the auxiliary water column, a fifth valve is mounted at the bottom of the main water column, and a probe of the total dissolved gas determinator is inserted in the main water column. The experimental device can be used for simulating the submerged discharge, the free discharge and the total dissolved gas saturation process of different front-dam flows to research the relation between the supersaturation level and the front-dam total dissolved gas saturation.

The invention discloses a migratory biological information monitoring method based on weather radar data. The method comprises the steps that creature echo reflection rate data is extracted from echoreflection rate data of a weather radar; nonuniform creature migratory height distribution intervals and distant radar wave broadening are taken into consideration; furthermore, the creature echo reflection rate obtained in step two can be converted to airborne migratory creature density in a corresponding region to count the creature amount of migratory creatures and the relation along with the variation of time of the creature amount. The method has the advantages that counting errors caused by non-fully filling of wave beams can be avoided to improve the extraction accuracy of the migratorycreature echo, and an effective means is provided for monitoring large-scale migratory creature number.

The invention discloses a coal and gas outburst simulation system which comprises an electronic universal testing machine, an outburst simulation device, a gas system, a confining pressure hydraulic system and a computer, wherein the outburst simulation device consists of a lane side simulation mechanism and a lane side surrounding environment simulation mechanism; the lane side simulation mechanism comprises a baffle, a ventilating plate, a coal rock sample and a U-shaped clamping sleeve; the lane side surrounding environment simulation mechanism comprises a base, a cylinder, a cylinder cover, a lower pressing head, an upper half concave pressing head, an upper half convex pressing head and a piston; the gas system comprises a gas tank, a pressure reduction valve and a gas pressure meter; the confining pressure hydraulic system comprises a confining pressure hydraulic box, a confining pressure liquid flow-in pipe, a hydraulic pump, a check valve, a confining pressure liquid overflow pipe, a confining pressure hydraulic pressure gauge and a confining pressure liquid overflow valve. The invention also provides a coal and gas outburst simulation method capable of simulating coal and gas outburst without disturbance influence and under disturbance influence. The system and the method which are disclosed by the invention can really reflect a coal and gas outburst process of a coal mine and are high in practicability and favorable for popularization and use.

The invention relates to a material flameless pyrolysis and flame combustion experiment box capable of changing environment stress and atmosphere conditions, which overcomes the defect of unavailability of experiment devices for material flameless pyrolysis and flame combustion characteristic researches compared with the prior art. The material flameless pyrolysis and flame combustion experiment box disclosed by the invention comprises a reaction box, wherein an experiment box door is movably installed in the side part of the reaction box; an observation window is formed in the experiment box door; an intake hole is formed in the bottom of the reaction box; an intake pipeline is connected to the intake hole and located outside the reaction box; an exhaust hole, a radiation source wiring terminal and an aviation plug are arranged on the reaction box; a pressure sensor is installed on the exhaust hole; the material flameless pyrolysis and flame combustion experiment box further comprises an intake assembly, an exhaust assembly and a radiation source assembly. The material flameless pyrolysis and flame combustion experiment box disclosed by the invention has the fire-fighting research experiment functions of a conventional low-pressure experiment box, and can also be used for flameless pyrolysis and flame combustion characteristic researches for solid combustibles.

The invention relates to an attenuation total reflection surface enhanced infrared optical device for DNA identification and hybridization dynamics analysis. The attenuation total reflection surface enhanced infrared optical device comprises an attenuation total reflection surface enhanced infrared optical window in which an island-shaped nanometer gold film is plated on the surface of a silicon hemisphere, an optical table base, a fixed support region, an infrared light spectrum pool, a PDMS (Polydimethylsiloxane) sealing ring and the like, wherein the silicon hemisphere plated with the gold island-shaped film is placed on the optical table base, a gold film surface of the optical window is toward the infrared light spectrum pool, and the middle of the optical window is sealed by the PDMS sealing ring; the light spectrum pool, the PDMS sealing ring and the silicon hemisphere optical window are screwed-in and fixed through an external thread of the fixed support and an internal thread of an upper support of the optical table base so as to form the surface enhanced infrared spectrometer for DNA analysis. The testing device, provided by the invention, has the advantages of simple structure, convenience for operation and small required sample amount, and can be stably used for a long time and convenient for real-time on-line detection of infrared spectrum signals at a waveband of 1100cm<-1> to 4000cm<-1>, and high-sensitivity analysis of DNA molecules, so that DNA identification and hybridization mechanisms and kinetics research can be realized.

The invention relates to a machine tool for the running-in process of a ball and a valve seat of a ball valve. The machine tool comprises a beam, a left grinding head spindle assembly, a right grinding head spindle assembly, a left spindle feed and ball screw drive system, a right spindle feed and ball screw drive system, a ball motion control device and a valve seat clamping fixture, wherein the beam is provided with a guide rail, the left and the right grinding head spindle assemblies are arranged on the guide rail, the output ends of the spindle feed and ball screw drive systems are respectively connected with the grinding head spindle assemblies, the ball motion control device is arranged in the interspace between the left and the right grinding head spindle assemblies, and the valve seat clamping fixture is arranged on a cardan joint which is arranged on the output ends of the left and the right grinding head spindle assemblies. The invention aims at designing a machine tool which can run in and process the ball and the valve seat of the ball valve and achieve a high grinding precision and high efficiency. Compared with the prior art, the machine tool for the running-in process of the ball and the valve seat of the ball valve has the advantages that the grinding degrees and the grinding precision are controllable, the processing efficiency is high, and the cooperation between the ball and the valve seat can completely meet the hard seal requirements.

The invention discloses a split type coal-gas adsorption desorption and outburst test device, which comprises a cylindrical coal sample chamber. The coal sample chamber is provided with several pressure temperature sensors able to detect molded coal temperature and gas pressure. Hydraulic loading equipment able to stretch into the coal sample chamber and apply axial ground stress is fixedly mounted at one end of the coal sample chamber, the other end is provided with a coal-gas blowout port communicated with the coal sample chamber during work, and a quick release mechanism is disposed at the coal-gas blowout port to control the blowout port breakover. The hydraulic loading equipment is connected to a piston rod through a universal joint, and the tail end of the piston rod is connected to a surface type inflation loading disc in contact with a coal sample placed in the coal sample chamber during test. The invention also discloses a test method using the device. The device and the method provided by the invention can research the adsorption desorption characteristics of coal to gas and the coal-gas outburst mechanism when molded coal is under different ground stress and gas pressure conditions.

The invention discloses a method for simulating harmonics of a power system to be connected with an electrified railway. The method comprises the following working steps: (1) establishing an electrical transient analyzer program (ETAP) power system model; (2) utilizing the ETAP model to simulate triple frequency harmonics and multiples of the triple frequency harmonics of the power system to be connected with the electrified railway; (3) utilizing the ETAP model to simulate each frequency harmonic of the power system to be connected with the electrified railway except for the triple frequency harmonics and the multiples of the triple frequency harmonics; and (4) utilizing the ETAP model to simulate each frequency harmonic of the power system to be connected with the electrified railway. According to the method, the complexity of large-scale power system modeling is simplified, the difficulty of load flow calculation and debugging is overcome and the simulation and the research of the harmonics connected with the electrified railway are realized quickly and effectively. The method can be used for evaluating the impact on power quality of the power system before a power supply system is connected with the electrified railway, thereby guiding planning and design of the power system.

The invention discloses a wind tunnel simulation device for research of a plant dust retention mechanism and an operation method. The device comprises a wind environment control system, a powder adding system and a plant dust retention exposure system; the wind environment control system comprise a fan for generating simulated wind speed; the powder adding system comprises a powder adding elementlocated on the leeward side of the fan and used for adding particles and simulating particle pollution; the plant dust retention exposure system is located on the leeward side of the powder adding element and used for fixing a plant sample. The device further comprises a particle measurement system. Different wind speed scale environments and air particle pollution concentration conditions of plants can be simulated by the corresponding control systems, and to-be-analyzed plant dust retention capacity is analyzed quantitatively; the degree of influence of plants with different crown structuresand leaf surface structures on the mitigation effect on the particles is analyzed quantitatively, the efficient dust retention plants more suitable for different wind speeds and particle environmentsare found, and great significance in control of urban air particle pollution and selection of tree species is realized.

The invention discloses a method for drawing a high-fidelity model on the basis of CT (computed tomography) knee-joint images. The method includes the steps of (1) processing an original CT knee-joint image; and (2) completing three-dimensional visualization of the CT knee-joint image via a light ray projection method. The principle of the light ray projection method is utilized to reconstruct a three-dimensional model of the CT knee-joint image, the three-dimensional model is drawn according to the original CT knee-joint image, visualized effect of the CT knee-joint image is realized, study on medical images is facilitated, and a doctor is enabled to diagnose an illness state of a patient more accurately and faster. The method for drawing the high-fidelity model on the basis of the CT knee-joint images overcomes defects of other drawing methods, and can be used to visualize CT images and MRI (magnetic resonance imaging) images which are normally seen in the medical science. The method for drawing the high-fidelity model is practical and convenient, complies with expected requirements in result, can be used to draw three-dimensional models of medical organization (organs) quickly and accurately according to CT medical organization (organs) images, and meets different requirements of medical treatment and scientific research.

The invention discloses a scale model test platform for large space airflow distribution. The scale model test platform comprises a large space scale model, an air processing system, a thermal environment system, an air conditioner cold source system and a data collecting and controlling system. The air conditioner cold source system is respectively connected with the air processing system and the thermal environment system to be used for providing freeze water for the air processing system and the thermal environment system. The air processing system is connected with the large space scale model to be used for providing airflow distribution inside a large space scale model. The thermal environment system is used for providing thermal environment outside the large space scale model, the data collecting and controlling system is installed on the air processing system and the thermal environment system and used for collecting air parameters inside and outside the large space scale model and for controlling the air parameters. Based on the similarity principle, the scale model test platform is established, can be used for finishing various large space building scale model tests, is wide in application range, flexible in using, visual in test process and real in test result, serves as a test and verification platform for large space building airflow distribution optimizing design and research and is a pioneer of the field.

The invention relates to an augmented reality system experiment platform applied to robot assisting surgical navigation. The augmented reality system experiment platform comprises a support main body (1), a horizontal working platform (2), a projector (3), binocular stereo vision cameras (4), auxiliary light sources (5), a height sensor (6) and a head mold fixing frame arranged on the horizontal working platform (2) and capable of rotating along the axial direction. The support main body (1) is in a cuboid framework type structure. The projector (3) projecting towards a position below is fixedly arranged in the center of the upper portion of the support main body (1). The binocular stereo vision cameras (4) are symmetrically fixedly installed at two sides of the projector (3), and the interval can be adjusted. The auxiliary light sources (5) with angles and brightness capable of being adjusted are installed on four corners of the upper surface of a framework. The horizontal working platform (2) capable of moving upwards and downwards is installed at a horizontal position of the middle of the support main body (1). The height sensor (6) is fixed on a side stand column of the support main body (1), is connected with the horizontal working platform (2), and is used for measuring the height value of the side stand column.

The invention discloses a device for testing radial deformation of a rubber compression test-piece. The device for testing radial deformation of the rubber compression test-piece is characterized by mainly comprising a base (1) and a press head (2) arranged above the base (1), wherein a radial displacement sensor (3) is arranged on the base (1), and an axial displacement sensor (4) is arranged on the press head (2). The device for testing radial deformation of the rubber compression test-piece is simple in structure and low in cost, can test radial deformation in the process of compression of rubber, and facilitate further development and utilization of the rubber, so that the device for testing radial deformation of the rubber compression test-piece is applicable to popularization and use.