97 results about "External field" patented technology

The invention discloses an internal and external flow coupling numerical simulation method, device and equipment and a storage medium, and relates to the technical field of numerical calculation, a flow state at an initial moment is determined to obtain an external field wall surface temperature, an external field multi-component chemical unbalance N-S equation is solved according to external field fluid boundary conditions, and the internal and external flow coupling numerical simulation result is obtained. External fluid boundary heat flow at the next moment and external field pressure at the next moment are obtained as coupling interface boundary conditions for internal field solution, internal flow of the porous sweating structure is solved through an enthalpy method equation set of TPMM and LTNE to obtain parameters at the coupling boundary at the next moment, and finally high-enthalpy unbalanced external field parameters at the termination moment are obtained. An N-S equation under a multi-component chemical unbalance hypothesis is adopted to solve supersonic outflow, a chemical reaction between an active cooling working medium and supersonic incoming flow under a supersonic condition is simulated, and wall surface heat flow and structural thermal response of the porous sweating cooling system are obtained.

The invention provides a three-dimensional scene digital fusion method for intelligent test internal and external field environment characteristics, and belongs to the technical field of three-dimensional scene digital fusion. According to the method, multi-source data is normalized through a data fusion algorithm, so that the data source of three-dimensional live-action construction is more sufficient and more comprehensive, the coverage integrity of a combat scene is improved, the surveying and mapping precision and modeling details are improved, the labor cost is further reduced, and the method is of great significance to three-dimensional live-action construction of internal and external fields.

The invention relates to the technical field of medical information, in particular to a multi-source data health intervention method, which comprises the following steps: firstly, acquiring texts, vital signs, image vectors and wearable signals, generating a unified vector through multi-modal coding, and extracting a topological life vector; constructing a spiking neuro-causal diagram based on a unified vector, and injecting a life vector as an external field into a Sheng differential equation to generate a dynamic pathological manifold; compressing the manifold into a tensor network state, constructing a quantum optimization model in combination with a causal diagram, minimizing energy expectation and topological risk to obtain an optimal intervention sequence, and reinjecting a target gradient to adjust the manifold in real time; after the sequence is subjected to clinical logic verification, a commitment value and a zero-knowledge proof are generated and written into a Byzantine account book, and meanwhile a control instruction is issued to an execution terminal. According to the method, millisecond-level decision making is achieved, the false alarm rate is reduced, and chain traceability is provided.

The invention relates to the field of electromagnetism, in particular to a micro-magnetic method for predicting magnetic characteristics of a magnetic sample, which comprises the following steps of: (1) constructing a plurality of magnet models with different magnetic domain sizes, shapes and magnetic domain numbers, and determining magnetic parameters of the magnet models; (2) placing the to-be-measured magnet under a preset external field condition to obtain the magnetization intensity of the to-be-measured magnet, and comparing the magnetization intensity with the measurement result of each model under the same external field condition; (3) determining the similarity between the to-be-tested magnet and each model, finding out the model with the highest similarity, and calling each magnetic parameter of the model; and (4) determining the external field condition of the magnet to be detected in the new target environment.

The invention discloses a rapid three-dimensional electromagnetic simulation method and verification device for a large-scale uninsulated coil, and aims to solve the problems of large calculation load, difficulty in homogenization, poor field-circuit coupling convergence and low result precision of the three-dimensional simulation of the existing large-scale uninsulated coil. The simulation method comprises the following steps: establishing a homogenized coil which does not divide specific turns, and setting anisotropic resistivity; constructing a current source area intercepted on the coil body and a free turn-to-turn resistance area connected in parallel with the current source area; applying current source excitation according to an open loop / closed loop coil; and the precision is ensured through radial grid encryption and result convergence verification. The verification device comprises a three-dimensional multi-turn verification coil, a direct current source, a multi-direction alternating external field applying module and a voltage and magnetic field measuring unit, direct current is supplied, an alternating external field is applied, and the simulation accuracy is measured and verified in real time. The method is simplified in modeling, rapid in calculation, good in convergence and high in precision, adapts to open-loop / closed-loop and single-cake / multi-cake coils, and is suitable for large uninsulated superconducting coils in rotary and linear motors, nuclear fusion equipment and the like.

The invention discloses a multi-layer thin film structure capable of achieving vertical exchange bias and free of external field auxiliary total current overturning and a preparation method and application thereof, the multi-layer thin film structure sequentially comprises a heavy metal base layer, an atomic level intercalation layer, a ferromagnetic layer and an antiferromagnetic layer from bottom to top, and the multi-layer thin film structure is prepared through molecular beam epitaxy. According to the invention, anisotropic epitaxial strain is introduced into the antiferromagnetic layer, so that a remarkable vertical exchange bias effect at room temperature is realized. Meanwhile, a global uncompensated magnetic moment is generated in the anisotropic epitaxial strain induction antiferromagnetic layer, an energy barrier of vertical exchange bias flipping is reduced, current-driven exchange bias flipping without an external field is further realized through a spin-orbit moment effect, the dependence on an external magnetic field in the prior art is overcome, and the performance of the device is improved. And the integration and the application potential of the spinning electronic device are obviously improved. The technology lays a foundation for design and development of efficient and high-density magnetic storage and logic devices.

The invention discloses a method for external field on-line calibration of a micro-array MEMS gyroscope. The method comprises the following steps: electrifying and initializing a micro-array inertial sensor; the output of the micro array MEMS gyroscope is converted into three-axis output of a carrier coordinate system; in combination with a maneuvering target tracking theory, establishing a Kalman filter for angular rate tracking, and estimating the angular velocity rate of each axis at each moment; establishing an adaptive Kalman filter for random drift error estimation by using the angular rate of each axis at each moment obtained by estimation, and respectively performing random drift error and deterministic error compensation on the xyz axis; taking the estimated angular rate of the random drift error compensated at each moment as a reference, establishing a deterministic error estimation Kalman filter, and performing compensation; twelve error parameters at the moment are obtained through estimation, and after the random drift error and the deterministic error of the current sampling angular rate are compensated, the final calibration angular rate at the current moment is obtained.

The invention belongs to the technical field of photovoltaic measurement, and particularly relates to a photovoltaic cell performance in-situ high-throughput characterization device and method. The device comprises a control unit, a J-V testing system, a microscopic steady-state photoluminescence / transient fluorescence imaging system, a multi-external-field control system and a high-throughput sample cavity, the high-throughput sample cavity is fixedly arranged on a two-dimensional translation table, and the two-dimensional translation table is fixedly arranged on a large-stroke linear displacement table; the high-throughput sample cavity comprises a sample chamber, a plurality of sample accommodating positions are arranged in the sample chamber, a quartz glass cover used for sealing the sample chamber is arranged above the sample chamber, and an air inlet used for adjusting humidity and atmosphere is formed in the cavity wall of the high-throughput sample cavity; according to the invention, various parameters of the photovoltaic cell can be measured, the measurement efficiency is high, and the device is simple in structure.

Disclosed in the present invention are an internal and external field combined polymorphic network test environment construction method and apparatus. The method comprises: constructing an internal field test environment and an external field test environment which are based on programmable switches; constructing a functional level comprising four modules, i.e., network access, a network facility, network management and control, and a service application; and constructing operation logic, comprising monitoring a network state in real time, analyzing user experiment requirements, issuing resource configuration, operating a user experiment, and updating network resources. The present invention provides a flexible programmable forwarding capability, can support new user-defined protocols while supporting a mainstream IP protocol, and has good expansibility. In addition, the present invention can simultaneously support a laboratory environment and a real network operation environment, thereby being capable of providing a real network test environment for industry users to test new functions and the like, and having good actual application value.

The invention provides a magnetic liquid drop and particle collision measurement experiment device based on a computer vision technology, and belongs to the field of particle collision characteristic detection. The problems that in the collision measurement process of the magnetic liquid drops and the particles, external field regulation and control are lacked, and personal errors exist in the image analysis process are solved. The device comprises a magnetic control device, a particle fixing device, a liquid drop emitting device and a data acquisition and processing device, the magnetic control device controls the magnetic field intensity by controlling the magnitude of voltage and current input by a direct-current power supply, and the magnetic field direction is changed by adjusting a magnetic field generator; the particle fixing device fixes particles; the liquid drop emitting device emits magnetic liquid drops; a high-speed camera and a data acquisition instrument in the data acquisition and processing device can acquire and record experimental data and feed back the experimental data to a data processing unit, and a computer vision technology is utilized to carry out dynamic capture and image recognition on the spreading process of the magnetic liquid drops on the surfaces of the particles. The collision process can be accurately controlled, and the collision process is dynamically captured through the computer vision technology.

The invention relates to the field of quantum calculation and combinatorial optimization solution, and provides a measurement resource adaptive allocation and risk control recursive dimension reduction method and system based on a parameterized quantum circuit, and a medium. The classical controller issues a circuit control and read-out instruction to the quantum processing unit, executes calculation base projection read-out sampling, counts and estimates diagonal Pauli observable measurement and a tensor product term thereof, and generates point fixation and edge contraction candidate actions. Constructing a lower confidence boundary based on observation uncertainty and dynamically distributing sampling times; forming classical confidence in combination with the flipping cost, performing weighted fusion on the classical confidence and the quantum confidence according to uncertainty to obtain a score, and calculating the risk; selecting low-risk actions in batches under conflict constraints, performing elimination, updating coupling and an external field, and executing amplitude cutting, re-calibration and rarefaction; and iterating to a scale solvable solution and backfilling an output solution.

The invention provides a radar head external field test platform. The radar head external field test platform comprises a radar head; the first adjusting device comprises a fixing frame, a driving assembly and a bottom frame, the radar head is fixed to the fixing frame, the fixing frame is hinged to the bottom frame, and the driving assembly is installed on the bottom frame and used for driving the fixing frame to rotate along the hinged position of the fixing frame and the bottom frame; the rotary table device comprises a rotary table body and a base, a first adjusting device, the rotary table body and the base are distributed from top to bottom, a second adjusting device is arranged on the lower side of the base and comprises a first adapter plate, a bottom plate and a leveling supporting leg assembly, the base is installed on the first adapter plate, and the first adapter plate is hinged to the bottom plate; the leveling supporting leg assembly is fixed to the bottom plate and used for driving the first adapter plate to rotate along the hinged position of the first adapter plate and the bottom plate. According to the technical scheme of the embodiment, the angle between the radar head and the radar head external field test platform can be adjusted, and the angle adjustment requirement and the transportation requirement of the radar head in the external field test are met.

The present technology pertains to an information processing device, method, and program that enable quick response of a user to be supported and risk to be reduced. An information processing device detects an intervening person from the outside with respect to a user wearing a device that blocks an external field of view and sound, and performs control to present information related to the detected intervening person to the user. The present technology can be applied to an environmental computing system.

The application provides a method for pulse magnetic field assisted aluminum copper metal diffusion, and belongs to the field of diffusion connection. The application provides a method for pulse magnetic field assisted aluminum copper metal diffusion, which comprises the following steps: bonding the connecting surface of an aluminum workpiece with the connecting surface of a copper workpiece, and performing heat treatment in a pulse magnetic field; the temperature of the heat treatment is 550 DEG C, and the holding time is 6h; the pulse magnetic field is applied every 15min, and the total application time of the pulse magnetic field is 3h. The application improves the traditional high-energy consumption mode of 'ultra-high temperature and ultra-long holding time', relies on the efficient enabling characteristics of a low-energy pulse external physical field, and can realize the preparation of an ultra-thick high-quality diffusion layer under the condition of medium temperature and short cycle, thereby greatly shortening the production cycle and reducing the energy consumption cost; meanwhile, the low-energy short-time external field does not damage the matrix organization, and completely avoids the problems of matrix grain coarsening and mechanical property attenuation caused by high-temperature long-term heat treatment.

The invention discloses an external field response absorbent and application thereof, and belongs to the technical field of gas purification and separation. The external field response absorbent provided by the invention is prepared from the following raw materials: a main absorbent, an activating agent, a conditioning agent and an absorption enhancer in a mass ratio of (5-20): (5-20): (5-20): 1. The external field response absorbent provided by the invention has the advantages of high regeneration rate and high cycle capacity under the action of light waves, sound waves or microwaves, and the CO2 capture cost is remarkably reduced; the regeneration performance is improved by 50-80% compared with that under the traditional heat treatment condition; and the regeneration temperature is 95-105 DEG C, which is reduced by 5-35 DEG C compared with the regeneration temperature of 110-130 DEG C of the traditional industrial absorbent, and the industrial absorbent has significant advantages in energy consumption and operation cost.

This invention discloses a method for enhancing the uranium separation efficiency of commercial iron powder using an external field, comprising: adding commercial iron powder to a reactor containing fluorine- and uranium-containing wastewater; applying an external weak magnetic field or magneto-optical coupling; and performing uranium separation treatment on the fluorine- and uranium-containing wastewater under continuous stirring. This invention magnetizes the commercial iron powder by introducing a weak magnetic field, thereby attracting Fe... 2+ Migration disrupts the passivation layer on the surface of iron powder, promoting the reaction of U(VI) with Fe. 0 The redox reaction simultaneously strengthens the affinity between the magnetized iron powder particles and the paramagnetic O2 molecules, leading to the formation of γ-FeOOH nanosheets with a high specific surface area on the iron powder surface. The γ-FeOOH surface is rich in oxygen-containing functional groups, which achieve U(VI) separation through the bonding of -OH groups with U(VI). This invention, based on a weak magnetic field, further improves the separation efficiency of commercial iron powder for U(VI) in fluoride- and uranium-containing wastewater by coupling with an optical field.

The present invention discloses a multi-layer thin film structure for realizing vertical exchange bias and all-current switching without external field assistance, and its preparation method and application. The multi-layer thin film structure sequentially includes a heavy metal underlayer, an atomic-level interlayer, a ferromagnetic layer, and an antiferromagnetic layer from bottom to top, and the multi-layer thin film structure is prepared by molecular beam epitaxy. The present invention realizes a significant vertical exchange bias effect at room temperature by introducing anisotropic epitaxial strain in the antiferromagnetic layer. At the same time, the anisotropic epitaxial strain induces a global uncompensated magnetic moment in the antiferromagnetic layer, reduces the energy barrier for vertical exchange bias switching, and further realizes current-driven exchange bias switching without an external field through the spin-orbit torque effect, overcoming the dependence on an external magnetic field in the prior art and significantly improving the integrability and application potential of spintronic devices. This technology lays a foundation for the design and development of high-efficiency and high-density magnetic storage and logic devices.

The invention provides an atom magnetometer external field low magnetic course error test method and system, a magnetometer to be tested and a reference magnetometer are installed in a calibration turntable, the two magnetometers are differentiated to eliminate environmental magnetic field fluctuation, a turntable control system controls the three-axis rotation direction of the turntable through a universal transmission rod, and the calibration turntable is used for calibrating the external field low magnetic course error. And the course error test is realized through a fixed process, and the used skyscreen is used for providing necessary rainy day protection capability for the test system, so that the environmental adaptability is improved. According to the method, strict non-magnetic design is carried out on each component, and the residual magnetism of each component needs to be less than 1nT level, so that various environmental interferences in an external field test environment are avoided, and the environmental applicability and robustness are improved. By applying the technical scheme of the invention, the technical problems of variable geomagnetic field directions, large magnetic field environment fluctuation and low manual calibration efficiency in the course error calibration process of the atom magnetometer in the prior art are solved.

The application relates to a vertical magnetization anti-ferromagnetic magnetic memory without external field assistance and a storage method thereof, which comprises an anti-ferromagnetic layer, an insulating layer and a heavy metal layer from top to bottom, two groups of write currents of the anti-ferromagnetic layer and the heavy metal layer are perpendicular to each other in space, the size and direction of the two groups of write currents of the anti-ferromagnetic layer and the heavy metal layer are controlled, the upward or downward state of a Neel vector in the anti-ferromagnetic layer is controlled, and the Neel vector state represents different information of storage. The Neel vector of an anti-ferromagnetic device is regulated by using direct current to realize data writing, improve the arrangement density of a storage unit array, and save energy consumption. The vertical magnetization anti-ferromagnetic magnetic random storage unit has higher magnetic moment flip speed, better storage stability, simple structure, high speed, anti-stray field disturbance and non-volatility, and the storage unit is especially faster in reading and writing speed.

The application relates to computer technology and discloses a query method and system for a lightweight configuration management database (CMDB). The method maintains a plurality of model classifications and their configuration item information in the CMDB, and uses an identification group to record the mapping relationship between the external system name, the external system data identifier, the model classification, and the corresponding attribute field, to realize dynamic association and query of a plurality of external data sources. Specifically, after receiving data of a first external data source, the target configuration item in the CMDB can be quickly locked based on the identification group, and the second external data source is called for cross-system data retrieval accordingly, so that flexible linkage between the configuration item and the plurality of external data sources is realized without redundant storage of a large number of external fields. The method reduces the redundant information of the CMDB, improves the operation and maintenance efficiency and the data traceability, and is suitable for scenarios that need to manage a plurality of source data such as an alarm system and a log system.

The invention belongs to the technical field of detection, and particularly relates to an airborne active phased array radar and IFF equipment integrated test system. Comprising a comprehensive detection device, and the comprehensive detection device comprises a microwave link unit, a mass storage unit, a baseband signal processing unit, a signal interface unit, an IFF system unit, a comprehensive detection unit and a main control unit. And the man-machine interaction display and control computer is used for generating a control command, sending the control command to the main control unit, and analyzing and evaluating the received test result. According to the invention, automatic detection of external field radar and IFF equipment task functions and important task indexes can be realized, the method has the advantages of good versatility, portability, comprehensiveness, maintainability and economical efficiency, reduction of guarantee period, cost saving and the like, and the method accords with the integrated development trend of modern informatization electronic systems.

Provided are new classes of reconfigurable, multistable metasurfaces using the physics of colloids confined within nematic liquid crystals (NLCs). The colloids are physically moved from one stable location to another as defined by NLC-colloid interactions by external switching fields. These colloids can be scatterers within reconfigurable metasurfaces with electromagnetic (EM) responses that change with colloid location. because the colloids are moved between stable loci, these metasurfaces are also multistable, and require energy input only when changing colloid position. Furthermore, because the colloids can be returned to their original positions by simply reversing the switching field, all changes in EM responses are entirely reversible. Also provided are reconfigurable, multistable metasurfaces that utilize colloids disposed within a field of protrusions extended from a surface, with interactions between the colloid and the protrusions and the application of external fields operating to move the colloids between stable states.

The present invention discloses a magnetic field material processing device under variable atmosphere with a temperature up to 2000 °C, comprising: a vacuum furnace body, a heating furnace body, a heat preservation furnace body, a superconducting magnet, a test tube, a heating element and a thermocouple; the vacuum furnace body, the heating furnace body and the heat preservation furnace body are coaxially arranged from top to bottom and detachably connected, the superconducting magnet surrounds the outer periphery of the heating furnace body, an up-and-down driving device is arranged on the mounting rack, and the up-and-down driving device can move the vacuum furnace body and the heating furnace body up and down along the superconducting magnet; a side-end driving device is arranged on the up-and-down driving device, and the side-end driving device can move the vacuum furnace body to one side of the heating furnace body, the lower end of the test tube is inserted into the heating element, and the heating element is used to heat the sample in the test tube; the detection part of the thermocouple is located below the test tube to realize real-time monitoring of the temperature of the sample in the test tube. The present invention couples an atmosphere control system in a conventional heating furnace body, which is closer to the actual working conditions under extreme external fields and provides more technical data for the application of strong magnetic fields.

The invention provides an indoor space triaxial magnetoresistive sensor parameter calibration obtaining method and a magnetoresistive sensor, and the method comprises the steps: 1, building a multi-layer magnetic shielding barrel, and shielding the external magnetic field interference for the calibration of a triaxial magnetoresistive sensor; 2, designing a three-direction magnetic field coil and a coil framework; 3, winding a three-dimensional coil, and fixing the sensitive center of the three-axis magnetoresistive sensor at the central position of the three-dimensional coil; and 4, through a current control strategy, under the condition that the size of the total magnetic field is not changed, the direction of the magnetic field continuously rotates and changes, the state that the sensor continuously rotates during external field testing is simulated, and acquisition of calibration parameters of the indoor sensor is completed. By applying the technical scheme of the invention, the technical problem of high manpower and material resources required for calibration in a remote field in the prior art is solved.

An electric hand tool has a driving unit for driving a shaft of the tool and configured to drive, via the shaft, a socket of the electric hand tool or a socket connectable to the electric hand tool and a magnetostrictive torque sensor for measuring a torque applied to the shaft via the driving unit. The magnetostrictive torque sensor comprises a magnetized torque-transmitting element and a 3D magnetic field sensor configured for measuring a total magnetic field, the total magnetic field including the magnetic field generated by the magnetized portion of the shaft and an interfering external magnetic field. A processor is included for at least partially correcting the total magnetic field for the interfering external magnetic field to obtain a corrected magnetic field corresponding to the magnetic field generated by the magnetized torque-transmitting element, and for determining the torque applied to the shaft based on the corrected magnetic field.

The embodiment of the invention provides a testing method and device for Leiyu fusion, a storage medium and electronic equipment, and the method comprises the steps: building an external field environment through scene simulation software; acquiring a plurality of groups of mounting pose parameters corresponding to the sensing equipment, and adjusting the mounting pose of the sensing equipment and the mounting pose of the sensing model according to the current mounting pose parameters; detecting the target object through the sensing model to obtain first scene data, transmitting the first scene data to the sensing device, and obtaining first test data obtained by testing the first scene data through the sensing device; according to the first test data, determining a sensing performance parameter of the sensing device under the current installation pose parameter; and determining the installation pose parameter corresponding to the optimal sensing performance parameter in the plurality of groups of installation pose parameters as the optimal installation pose parameter of the sensing equipment, thereby solving the problem of low installation position test efficiency in an external field parameter adjustment method.

To perform accurate shape and position estimation of a vehicle when an angle of the vehicle cannot be observed.SOLUTION: An object recognition device comprises: a detection unit that detects an object using external field information acquired by an external field sensor; a shape information management unit that manages shape information which represents a shape of an object; a shape estimation unit that estimates the shape of the object based on the shape information and partial shape information representing the shape of at least a part of the object obtained by the external field information; and a position estimation unit that estimates a position of the object using the estimated shape of the object.SELECTED DRAWING: Figure 1

The application discloses a kind of based on multi-physical field solid flow coupling calculation time sensitive target temperature field method and device, belong to computer aided engineering and thermal physical simulation technical field, including: the heat transfer model of time sensitive target is established, the topological network of time sensitive target is constructed, and one-dimensional fluid network of time sensitive target is constructed, according to the flow heat transfer of fluid region inside time sensitive target and time sensitive target solid convection establishes coupling model;Radiation angle coefficient matrix of time sensitive target surface is calculated based on coupling model, determine the shielding relationship between time sensitive target surface patch, obtain the radiation angle coefficient matrix of time sensitive target surface;Dynamic thermal radiation boundary condition of time sensitive target under external field environment is calculated;Based on heat transfer model, radiation angle coefficient matrix and thermal radiation boundary condition, time sensitive target energy conservation equation set is established, and the temperature field of time sensitive target is solved to obtain.The present application realizes high-precision solid flow convection coupling modeling with low computing overhead, improves the calculation precision and efficiency of time sensitive target.

The invention provides a shafting installation error calibration method for photoelectric comprehensive monitoring equipment, the equipment adopts a common azimuth axis integrated design and comprises a plurality of coordinate systems from an optical axis to an IMU (Inertial Measurement Unit) body, and a plurality of groups of installation error angles exist among the coordinate systems. The method comprises the following steps: firstly, establishing a coordinate system conversion matrix and deducing and constructing a compensation model for decomposing height and azimuth measurement errors into constant zero offset and related items of a target height angle; on the basis of the model, aiming at the characteristics of different error terms, mechanical adjustment is adopted to eliminate negligible terms, digital calibration is carried out through combination of azimuth axis rotation modulation and IMU output calculation, external field zero calibration is carried out through RTK and a target, and finally systematic and high-precision compensation of all shaft system installation errors is achieved. According to the method, theoretical modeling and engineering practice are combined, the influence of complex shafting errors on the equipment precision is effectively eliminated, the measurement precision and reliability of the photoelectric comprehensive monitoring equipment are remarkably improved, and the method has systematicness and universality.