42results about How to "Promote theoretical research" patented technology

The invention belongs to the digital image processing technical field and relates to a Fourier optical modeling-based coded aperture camera image restoration method. In order to decrease dependence on actual photographing and reduce noise error introduced by manual photographing, the imaging mode of a coded mask optical imaging system is quantitatively analyzed, and finally, the point spread function of a coded aperture camera can be obtained, and the point spread function is adopted as prior data to restore an image. According to the technical scheme of the invention, the Fourier optical modeling-based coded aperture camera image restoration method includes the following steps that: (1) a coded mask imaging system is quantitatively analyzed, and the coded mask imaging system generates a simulation point diffusion function of a coded aperture camera under arbitrary depths; and (2) with the point diffusion function under arbitrary depths in the step (1) adopted as a fuzzy kernel, de-convolution is performed on scene images photographed by the same coded aperture camera, and a simulation result is optimized according to a maximum posterior probability MAP principle, and the image of the original scene can be obtained. The Fourier optical modeling-based coded aperture camera image restoration method of the invention is mainly applied to digital image processing.

The invention discloses a meshless RKPM-based two-dimensional thermal deformation and stress analysis method for an anisotropic material structure. The method mainly comprises the following steps of (1) performing RKPM node discrete preprocessing on a calculation model; (2) solving an RKPM thermal deformation displacement value: assembling RKPM overall force stiffness matrix and overall thermal load column vector; applying a boundary, and processing a first boundary condition by adopting a penalty function method; establishing a meshless RKPM thermal stress discrete control equation of the anisotropic material structure, and solving the RKPM thermal deformation displacement parameter value of a node; (3) solving an RKPM thermal stress value: performing approximation on the obtained thermaldeformation displacement parameter value by adopting reproducing kernel approximation to calculate out a thermal stress of a Gaussian point, thereby obtaining the RKPM thermal stress value of the node; and (4) post-processing a calculation result. The two-dimensional thermal deformation and stress analysis of the anisotropic material structure is performed based on a meshless RKPM; and a numerical method is stable and high in precision.

The invention relates to a preparation method of hydroxyl-terminated hyperbranched polyurethane. The operation steps include that 1 hydroxyl-terminated micromolecule polyhydric alcohol is dissolved in a non-proton organic solvent to obtain a hydroxyl-terminated micromolecule polyhydric alcohol solution; 2 the temperature of diisocyanate is raised to 70-90 DEG C, the hydroxyl-terminated micromolecule polyhydric alcohol solution is added, catalyst is added, and a reaction is conducted to obtain first generation hyperbranched prepolymer a1; and 3 the temperature of the first generation hyperbranched prepolymer a1 and di-alkanolamine is reduced to 0-15 DEG C, the temperature is kept, a reaction is conducted after blending, and products are separated and purified through precipitator and vacuum-dried to obtain first generation hydroxyl-terminated hyperbranched polyurethane A1. A synthesizing process is good in controllability, and the synthesized hyperbranched polyurethane is high in purity and neat in structure, contains large amount of terminated hydroxyl and is suitable for being used as a biological medicine carrier, a cross-linking agent, a viscosity modifier, a thermosetting material curing agent, a phase solubilizer, a rheological agent, thixotrope, a nucleating agent and the like.

Speed-regulated amortisseur for turning quality belongs to field of antiknock and reducing cataclysm. The existing TMD has problems of slow enabling and bad controlling effects under frequency disturbance. Its technical route is: TMD can attain the needed motion amplitude quickly by giving impulse to its quality block, which can improve its controlling effect for percussion load. Magnetic rheostat can be used to lock functions of TMD and major structure, adjust displacement relation of TMD and structure and reduce depression of controlling effect caused by frequency disturbance. The controlling effect of the invention acted by percussion load under the condition of reduce depression is batter than that of traditional passive TMD. It has on energy problem resolved difficultly by active control while great shaking. The invention is easy to realize and has low cost.

The invention discloses a method for simultaneously measuring double-domain induced polarization full parameters. A time domain method is adopted to record and display a potential difference and a curve formed by a cycle repeated signal sent by a power supply electrode between measuring electrodes; synchronization of transmission and receiving of signals are automatically achieved by mathematical treatment; and by calculation, the real part and the imaginary part of a fundamental wave and a harmonic wave are solved according to the obtained synchronized potential difference and curve so as to further calculate apparent resistivity, apparent absolute phase position, apparent amplitude diffusivity and view diffusivity. When the apparent resistivity and the apparent absolute phase position are measured, apparent polarization rate, an apparent charging rate and an attenuation curve are calculated according to a charging curve or a discharging curve at the same time. A time domain (interrupted rectangular wave) power supply mode can be independently adopted and a frequency domain (continuous rectangular wave) power supply mode can also be independently adopted so as to realize the purpose of simultaneously measuring the double-domain induced polarization full parameters in one-time power supply. According to the method, the technical problem of providing more information which can reflect polarization body characteristics and correlated information in short one-time measurement time can be solved.

The invention discloses an experimental device for interaction between a steel catenary riser and soil. According to the experimental device, by researching movements in the transverse, longitudinal and vertical directions of a test tube, the test tube is closer to engineering practice and is used for acquiring experimental data, so that an experimental data analysis result obtained by a three-dimensional experiment can preferably promote the theoretical research and numerical analysis so as to guide the integral design and analysis of the riser and guarantee the safe and reliable application of the riser in deepwater oil and gas exploitation. The experimental device comprises a soil box, the test tube, a computer, a servo motor and a data acquisition unit, wherein the data acquisition unit comprises a laser data acquisition unit, the soil in a certain thickness is paved at the bottom in the soil box, the test tube is horizontally paved at the upper surface of the soil, one end of the test tube is fixedly arranged on the inner wall of the soil box, the other end of the test tube is connected to a three-dimensional moving machine, and a three-dimensional coordinate track path acquisition mechanism is arranged on the test tube. The experimental device is mainly applied to a design technique of a deepwater steel catenary riser.

The invention provides a paste filling multi-field coupling researching device and an application method thereof, belonging to the field of refined researches of a paste filling mining technology. According to the device, a cylindrical material containing barrel is located at the central position of a maintenance box; the cylindrical material containing barrel is fully filled with paste filling materials; a sealing cover of the material containing barrel covers the top of the cylindrical material containing barrel; the outer part of the cylindrical material containing barrel is sleeved with a fixed cylindrical barrel; a heat insulation material of the material containing barrel is tightly filled between the cylindrical material containing barrel and the fixed cylindrical barrel; a sensor is buried in the paste filling materials; a dial indicator is fixedly arranged above the material containing barrel; the dial indicator is fixedly arranged at the outer part of the maintenance box by a bracket; a measuring rod of the dial indicator is fixed by a guide barrel, heat insulation cotton is fully distributed between the measuring rod of the dial indicator and the fixed cylindrical barrel; the connection part of the maintenance box and the dial indicator is sealed by a sealing material; a data collector is connected with the sensor and is connected with a computer; a whole testing device is arranged in the maintenance box. The device is simple to manufacture, small in volume and high in intelligence, and is suitable for paste filling material multi-field tests for adding gel materials in various mine enterprises of colored and black coal mines and the like.

The invention discloses an FPGA-based portable electrical impedance imaging system and a working method thereof. Imaging is mainly performed according to the characteristic of different conductivity of different biological tissue or the same biological tissue in different physiological states, and distribution information of conductivity in the tissue is reflected. A Red pitaya development board kit based on the ZYNQ series FPGA chip is adopted as the core, Red pitaya OS runs in embedded main control, and a board is loaded with a wireless / wired network module, a DDS signal generator, a signal conditioning module, an operational amplifier and filter circuit and a data acquisition circuit, and a voltage-controlled constant current source, a C51-based analog multiplexer with variable channel number and an electrode sensor are matched to be adopted as peripheral measurement equipment. High-precision, informationized and intelligent biological tissue information detection is realized by PC-side STEM lab development environment and Matlab software. A solution with high imaging quality, high accuracy rate and portability is provided by fully considering problems such as EMC.

The invention discloses an equal-flow area conical screw-sleeve pair, which belongs to the application field of single-screw pumps. A conical sleeve comprises an inner curved conical sleeve surface, a big conical sleeve end surface, a small conical sleeve end surface, and an outer cylindrical conical sleeve surface; a big conical screw end surface and the big conical sleeve end surface compose an inlet end of the conical screw-sleeve pair; and a small conical screw end surface and the small conical sleeve end surface compose an outlet end of the conical screw-sleeve pair. The flow area of one section of the conical screw-sleeve pair is defined as a difference between the area of the inner curved conical sleeve surface and the area of an outer curved conical screw surface in the section. The equal-flow area characteristic and equal-cavity characteristic of the conical screw-sleeve pair can help increase the displacement of a single-head conical screw pump and reduce pressure fluctuation, so that flow is smoother; moreover, pressure rise from the inlet end to the outlet end is relatively small, relative sliding speed is low in the process of movement, consequently, abrasion is reduced, and the service life is prolonged.

The invention discloses a method and purpose for constructing a TCM spleen deficiency syndrome AIDS monkey model. Among existing AIDS experimental animals, a monkey resembles to mankind the most. The inventor successfully constructs an HIV infected rhesus monkey TCM spleen deficiency syndrome composite model by two methods respectively. The first method is to carry out gavage with raw rhubarb concentrate to a create spleen deficiency syndrome and then carry out intravenous injection of infected SIV viruses. The second method is to carry out gavage with raw rhubarb concentrate to create the spleen deficiency syndrome after rhesus monkeys is infected with SIV viruses through intravenous injection. Based on the understanding of infection course, pathogenic processes and pathological changes of AIDS viruses in a spleen deficiency syndrome model, research on attack of infected target organs, target tissue and target cells to the immune system, on response of cells of the immune system, on the evolution law of a TCM syndrome, etc., is carried out. The established TCM spleen deficiency syndrome HIV infected monkey composite model in the invention plays an irreplaceable role in studying TCM pathogenesis and evolution of symptomatology of TCM for AIDS and in evaluating drug effects of anti-AIDS TCMs and compounds.

The invention discloses a temperature-sensitive plugging colloid for oil and gas fields, a preparation method and a use method thereof, wherein the plugging colloid comprises, by weight, 55-75 parts of modified polyacrylamide, 10-25 parts of a trivalent cross-linking agent, 5-20 parts of a water-soluble slow-release agent, and 45-65 parts of a water phase. According to the present invention, the modified polyacrylamide, the trivalent cross-linking agent, the water-soluble slow-release agent and the water phase are subjected to multi-phase physical adsorption and chemical pre-cross-linking wrapping granulation to obtain the product, such that the prepared temperature-sensitive plugging colloid has the delayed slow release and controllable cross-linking characteristics of temperature-sensitive swelling and temperature-controlled cross-linking, meets the intellectualization design requirement, has characteristics of low-temperature delayed adhesion and medium-high temperature control cross-linking, has characteristics of high strength and unblocking resistance after cross-linking, and has good theoretical research and practical value in the comprehensive treatment of leakage layers with a well temperature of 60-90 DEG C.

The invention discloses a suspension type comprehensive pipe gallery and maintenance platform system. The suspension type comprehensive pipe gallery and maintenance platform system comprises an axial suspension type comprehensive pipe gallery suspended between transverse beams of a house and located on the inner side of stand columns of the house, an axial maintenance platform matched with the axial suspension type comprehensive pipe gallery, a transverse suspension type comprehensive pipe gallery assembled at the top of a middle transverse beam of the house and arranged in the length direction of the middle transverse beam, a transverse maintenance platform matched with the transverse suspension type comprehensive pipe gallery, and an end suspension type comprehensive pipe gallery connected with the side portion of a house wind-resisting column and penetrating through an end transverse beam of the house. The suspension type comprehensive pipe gallery and maintenance platform system facilitates installation and maintenance of pipes and wires inside the house and wiring is tidy.

The invention provides a paste filling multi-field coupling researching device and an application method thereof, belonging to the field of refined researches of a paste filling mining technology. According to the device, a cylindrical material containing barrel is located at the central position of a maintenance box; the cylindrical material containing barrel is fully filled with paste filling materials; a sealing cover of the material containing barrel covers the top of the cylindrical material containing barrel; the outer part of the cylindrical material containing barrel is sleeved with a fixed cylindrical barrel; a heat insulation material of the material containing barrel is tightly filled between the cylindrical material containing barrel and the fixed cylindrical barrel; a sensor is buried in the paste filling materials; a dial indicator is fixedly arranged above the material containing barrel; the dial indicator is fixedly arranged at the outer part of the maintenance box by a bracket; a measuring rod of the dial indicator is fixed by a guide barrel, heat insulation cotton is fully distributed between the measuring rod of the dial indicator and the fixed cylindrical barrel; the connection part of the maintenance box and the dial indicator is sealed by a sealing material; a data collector is connected with the sensor and is connected with a computer; a whole testing device is arranged in the maintenance box. The device is simple to manufacture, small in volume and high in intelligence, and is suitable for paste filling material multi-field tests for adding gel materials in various mine enterprises of colored and black coal mines and the like.

Disclosed is a throttling well killing manifold electrical control system based on an expert PID controller. Through the expert PID controller, the output voltage can be changed to control the frequency of a variable frequency governor of an executing mechanism, so that the whole system maintains the given pressure, and intelligent control over the casing pressure and the standpipe pressure is achieved. According to the throttling manifold electrical control system, intelligent control over the casing pressure and the standpipe pressure is achieved, the control precision is obviously superiorto that of manual control, displaying, storing and replaying of parameters such as the standpipe pressure, the casing pressure and the opening degree are achieved, and subsequent study on related lawsand theories of underbalance is facilitated.

The invention relates to a mean and variance analysis method for estimation errors of the target positions of passive sensors. According to target azimuth measurement values of multi-station passive sensors, target position estimation is conducted according to the least square method, and position estimation result errors comprise a deviation mean and a root-mean-square deviation. According to the mean and variance analysis method for the estimation errors of the target positions of the passive sensors, in terms of the problem that only azimuth measurement is adopted for estimation error analysis of the target positions of multi-source passive sensors, the deviation mean of estimated values of the target positions is used for describing the errors generated in a target position estimation method; the error root-mean-square deviation of the estimation values of the target positions is used for describing the estimation accuracy of the target positions. The mean and variance analysis method for the estimation errors of the target positions of the passive sensors has the advantages that the expression of the deviation mean and the expression of the error root-mean-square deviation are mathematical analytic expressions; the estimation errors of the target positions are obtained through formula computing, and the number, positions and measurement accuracy of the sensors are not limited; the method is simple, and results are accurate; the method is beneficial to engineering application.

The invention provides a mask evaluation method for a coded mask optical imaging system and a mask structure code pattern. The mask evaluation method relates to three evaluation indexes including M1, M2 and RA. According to the mask structure code pattern, periodic arrangement is conducted on multiple square units which are completely identical in structure and meet the requirements of the Dammann optical grating structure, and then the square array structure is formed. The square array structure is an N*N array, wherein N is a positive integer and is larger than or equal to 3. By the adoption of the mask evaluation method for the coded mask optical imaging system and the mask structure code pattern, the coded mask optical imaging system is described based on the mask structure and the characteristics of a lens assembly, the point spread function of the system can be obtained more rapidly and more conveniently, the preparation process of manufacturing, construction and debugging of a real system is omitted, and operation errors possibly caused during actual measurement are avoided; the regulation function of different code pattern structures on the point spread function of the coded mask optical imaging system can be described objectively and can be used as the evaluation basis of the influence of the code pattern structures on the imaging quality of the whole system, and finally instructive suggestions are provided for design and optimization of the code pattern of coded masks of such imaging systems.

The invention discloses a cable-strut tension structure rod piece section optimization method and system based on importance analysis. The method comprises the following steps: (1) for a to-be-optimized cable-strut tension structure, obtaining importance coefficients of all types of rod pieces in a normal load state of the to-be-optimized cable-strut tension structure; (2) selecting a rod piece with the maximum importance coefficient, and reducing the importance of the type of rod piece to the minimum value to serve as an optimization target; (3) performing global optimization by taking the sizes of the cross sections of various rod pieces as optimization parameters to obtain optimized cross section areas of the rod pieces; and (4) obtaining an optimized cable-strut tension structure. Thesystem comprises an optimization target selection module, an iterative optimization module and a rod piece importance analysis module. Aiming at the technical problem that a cable-strut tension structure is lack of effective structural performance-based optimization design, the cross section is optimized, so that the importance coefficient of the strut member with the maximum strut member importance coefficient is as small as possible, and the strut member importance of a target category is effectively reduced after optimization.

The invention discloses a carbon dot-organic silicon composite fluorescent material as well as a preparation method and application thereof, and belongs to the technical field of optical functional materials. The preparation method comprises the following steps: adding a mixed reactant containing micromolecular organic acid and / or salt thereof, amino-containing organosilane and the like into a mixed solvent consisting of deionized water and absolute ethyl alcohol, uniformly mixing, and carrying out solvothermal reaction on the obtained mixed reaction solution at the reaction temperature of 180-200 DEG C for 4-12 hours; and after the reaction is finished, centrifuging, washing and drying the obtained product to obtain the carbon dot-organic silicon composite fluorescent material. The fluorescent light of the composite fluorescent material is regulated and controlled from blue light to orange light, and the composite fluorescent material has stable solid-state fluorescent light and can be used for constructing an efficient light-emitting solar light collector. The method has the advantages of easiness in preparation and purification, greenness, no toxicity and the like, and has good theoretical research and practical application values. The method for preparing the light collector is simple and convenient, and is suitable for large-scale production.

The invention relates to a mean and variance analysis method for estimation errors of the target positions of passive sensors. According to target azimuth measurement values of multi-station passive sensors, target position estimation is conducted according to the least square method, and position estimation result errors comprise a deviation mean and a root-mean-square deviation. According to the mean and variance analysis method for the estimation errors of the target positions of the passive sensors, in terms of the problem that only azimuth measurement is adopted for estimation error analysis of the target positions of multi-source passive sensors, the deviation mean of estimated values of the target positions is used for describing the errors generated in a target position estimation method; the error root-mean-square deviation of the estimation values of the target positions is used for describing the estimation accuracy of the target positions. The mean and variance analysis method for the estimation errors of the target positions of the passive sensors has the advantages that the expression of the deviation mean and the expression of the error root-mean-square deviation are mathematical analytic expressions; the estimation errors of the target positions are obtained through formula computing, and the number, positions and measurement accuracy of the sensors are not limited; the method is simple, and results are accurate; the method is beneficial to engineering application.

The invention discloses a riser motion response simulation device based on combination of floating structure wave frequency and slow drift. The riser motion response simulation device comprises a movable water tank, a top excitation loading device, a test sample tube and a data acquisition system. The movable water tank comprises a stainless steel plate, a tempered glass plate and the like; the top end excitation loading device is composed of an H-shaped steel stand column, a T-shaped side plate and a hydraulic servo double-frequency excitation loading device and arranged on the right side ofthe movable water tank. The test sample tube comprises a silicone tube and cylindrical syntactic foam, the top end is connected with the top end excitation loading device, and the tail end is connected with the inner wall of the movable water tank. According to the test device, the transmission process and motion characteristics of double-frequency excitation response generated by the floating structure along the slow wave type flexible vertical pipe under the action of wind wave flow are studied, so that a system acquired data analysis result obtained through an indoor model test can providea reference basis for configuration design and theoretical analysis of the deepwater flexible vertical pipe.

The invention discloses an on-line calibration method for a star sensor based on the SINS assistance of an aerospace aircraft, comprising the following process: obtaining the attitude matrix output by the star sensor relative to the inertial coordinate system; obtaining the attitude matrix output by the SINS, and converting the The attitude matrix output by SINS is constructed as a measurement that can match the attitude matrix output by the star sensor; construct the state vector of the SINS / star sensor integrated navigation system; utilize the star sensor attitude matrix obtained and the SINS attitude matrix to construct Construct the Kalman filter measurement equation of the SINS / star sensor integrated navigation system; then use the aerospace plane to perform angular maneuvers in at least two axes to estimate the installation error angles of the star sensors in the three axes, so that all The star sensor is calibrated online. The invention can calibrate the installation error angle of the star sensor on-line in real time only by performing a simple swinging action of the aerospace plane during the flight, and effectively guarantee the attitude determination accuracy of the star sensor in the actual use process.

The invention provides a mobile sound source 3D audio system based on a sliding track, which comprises a 3D audio processing system and an automatic sliding sound playing system, and is characterized in that the 3D audio processing system comprises a data input end, a data output end and a central processing unit, and the moving distance obtained after processing of the central processing unit is sent to a pulley control device; the sliding sound playing system comprises a plurality of sound devices and sound card devices which are arranged in a layered mode, all or part of the layers are provided with rails, and the other layers are provided with sound devices at fixed positions; one or more sound boxes with pulleys are arranged on each layer of track, a pulley control device is arranged, the pulley control device drives the sound boxes to slide on the track through the pulleys after receiving the moving distance of each sound box, and the distance between the sound boxes is changed; and each sound box is connected with different sound channels of the sound card equipment. According to the invention, the optimal position point of sound equipment movement can be determined, and better 3D audio experience can be provided with fewer sound equipment.

The invention provides an optimal configuration method of a sliding sound box, and when a mobile sound source 3D audio system based on a sliding track is used, a sound box playing process realized based on optimal configuration comprises the following steps: inputting initialized configuration information, inputting audio data with a motion track to be played, and intercepting an azimuth point; sequentially extracting azimuth points in the matrix, obtaining a selected sound box group according to the azimuth points and the action range of each sound box group, counting the frequency of respectively selecting all the sound box groups, and determining the optimal position point of each sound box according to the frequency; calculating the moving distance of each sound according to the information of the optimal position point, and controlling a pulley to drive the sound to move to the optimal position point; and sequentially calculating the gain coefficient of the sound equipment in the sound equipment group selected by each azimuth point, and outputting an audio file to different corresponding sound channels. According to the optimal configuration method of the sliding sound equipment provided by the invention, the use number of the sound equipment is reduced, the use space is saved, and the 3D audio effect is improved.