69 results about "External field" patented technology

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 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 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 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 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.

The invention discloses an analysis method for high-purity ferroelectric orthogonal phase regulation and control of a hafnium zirconium oxide ferroelectric film. The analysis method comprises the following steps: constructing a total free energy functional described by gradient energy density containing phase boundary energy and a non-ferroelectric phase; establishing a control equation set of multi-physics field coupling, and solving the control equation set; and carrying out data visualization and quantitative analysis on the output sequence parameter distribution, the phase distribution and the strain field, and quantitatively extracting key physical parameters from evolution data. According to the method, the phase boundary energy is accurately described, so that the model can truly reflect the characteristics of phase boundary migration, the domain overturning and phase boundary migration process in an external field can be visually and quantitatively analyzed, the key process which is difficult to capture in the traditional technology is broken through, and the accuracy and reliability of simulation prediction are remarkably improved. The method can be directly used for guiding the optimization of an experimental process, and meanwhile, the trial and error cost and time are remarkably reduced.

The invention discloses a space target structure modeling method and device based on internal and external field luminosity characteristics, and the method comprises the steps: carrying out the internal field test through a luminosity characteristic model, and obtaining a luminosity-angle data curve of the luminosity model; obtaining a blaze characteristic of a luminosity-angle data curve of the luminosity model, and establishing a mapping relation between a structure modeling scale and the blaze characteristic; performing an external field test on the space target to obtain a luminosity time sequence data curve of the space target, and extracting data features of the luminosity time sequence data curve; and comparing the data features with the blazed features, and determining the modeling scale of the space target structure. According to the invention, by analyzing the blazing characteristics, the size of the load or the composition structure of the external field space target causing the blazing characteristics can be determined, so that the size of the space target structure modeling is determined. The method has universality for space targets of different types and structures, and a basis is provided for further characteristic inversion and simulation analysis.

A technique is provided for cooling generic many-body quantum systems of unknown Hamiltonians to their ground states with a very high fidelity. The technique works by switching on a strong field and applying a sequence of projective measurements and RF pulses to polarize the system along the direction of the external field before we adiabatically switch the field off. The evolution of the system towards its ground state is governed by the quantum adiabatic theorem. We numerically simulate the proposed technique for quantum spin chains with long and short range interactions.

The invention discloses an Er (III)-based dissimilar metal monomolecular magnet material as well as a preparation method and application thereof. The structural formula of the material is [ZnEr (H2L) (MeOH) 2 (NO3) 2] (NO3). MeOH, the material is crystallized in a monoclinic system, the space group is P21 / n, and the cell parameters are as follows: # imgabs0 # imgabs1 #, alpha is equal to 90 degrees, beta is equal to 100.855 (6) degrees, and gamma is equal to 90 degrees. The erbium-based dissimilar metal 3d-4f single-molecule magnetic material has the characteristics of cheap and easily available raw materials and stable structure and performance, shows obvious temperature dependence and frequency dependence phenomena under the induction of an external field, generates typical slow relaxation behaviors, has the characteristics of a single-molecule magnet, and can be applied to the field of ultrahigh-density information storage.

A sample holder for advanced in-situ microscopy is described. The sample holder includes integrated devices to apply external fields and other stimuli to samples being inspected. The integrated devices can emulate operating environments for the samples. The sample holder and advanced microscopy can be used to study quantum characteristics and properties of samples.

The invention discloses a polarization control method in a continuous variable quantum key distribution system, and belongs to the technical field of quantum communication of optical fiber channels. In order to solve the problem that the polarization state of an optical fiber drifts in an external field complex environment, a Bayesian parameter estimation method in deep learning is effectively integrated in an extended Kalman filter algorithm, Gaussian distribution is determined as prior distribution, and a polarization controller cascaded by four degrees of freedom has the best control effect on the polarization state of a target. A polarization state measured by a polarization analyzer is used as a feedback signal, and meanwhile, the algorithm is quickly operated on FPGA hardware, so that real-time tracking and control of the polarization state of the optical field in the optical fiber are realized. By means of the method, the problem that the polarization state of the light field drifts rapidly under the external field extreme environment can be effectively solved, and compared with an existing genetic algorithm, a simulated annealing algorithm and a particle swarm algorithm, the number of iterations is greatly reduced, and the program running speed is higher.

The invention provides an electromagnetic signal simulation method and device in a complex multi-region natural environment. The method comprises the steps of obtaining characteristic parameters of a complex multi-region natural environment, performing spatial discretization and numerical calculation by using a DGTD method and a PE method, obtaining electromagnetic disturbance propagation characteristic data of each region, obtaining transfer functions of different regions by using discrete Laplacian transformation, cascading the transfer functions of the regions, and obtaining electromagnetic disturbance propagation characteristic data of the regions; obtaining a transfer function of the whole electromagnetic disturbance propagation area; and mixing the original electromagnetic signals and the characteristic parameters of the whole electromagnetic disturbance propagation area by using a LABVIEW program to obtain output signals, and carrying out analogue simulation processing on the output signals by using NI and a radiation type semi-physical simulation device to obtain analogue simulation electromagnetic signals of the complex multi-area natural environment. The electromagnetic signal simulation in the complex natural environment can accurately simulate the real electromagnetic environment of an external field, and the problem that indoor simulation equivalently replaces the external field test of environments with complex structure obstacles and the like is solved.

The invention discloses an equipment reliability appraisal test temperature stress model construction method, which is characterized by comprising the following steps of: acquiring multiple types of external field measured data, and performing polynomial function fitting on the external field measured data by utilizing a least square method to obtain a temperature stress model of an equipment reliability appraisal test; and obtaining a cold-day environment temperature model of the equipment in the ram air cooling cabin in which the cold-day environment temperature changes along with the height and the Mach number, and a hot-day environment temperature model of the equipment in the ram air cooling cabin in which the hot-day environment temperature changes along with the height and the Mach number. According to the method, the calculation efficiency is improved, the manual measurement error is reduced, and the accurate temperature stress of the equipment can be obtained.

The invention provides an electromagnetic environment monitoring method in a large module joint debugging period, which comprises the following steps of: firstly, determining a monitoring object and a monitoring part in a module according to the characteristics of an interference source and an electromagnetic interference risk possibly caused by the interference source, so that the monitoring scale can be effectively controlled, and the engineering practicability of monitoring can be enhanced; secondly, corresponding monitoring time and storage intervals are determined according to different types of monitoring objects and spectrum stability characteristics of the monitoring objects, so that a longer-time monitoring effect in unit time can be realized, and the method is particularly suitable for monitoring requirements of large-scale external field experiments such as module experiments as long as several months; data support can be provided for model overall electromagnetic compatibility evaluation, and the electromagnetic environment data acquisition requirement in the module joint debugging period is met.

Material properties are manipulated using rapid pulse application of energy in combination with applied electric or magnetic fields. When sintering, annealing or crystallizing a target film, the pulse repetition cycle can be constrained to ensure material temperature rises above and falls below the Curie temperature before the next energy pulse. This process results in enhanced material properties as compared to traditional techniques having a single, slow temperature excursion and subsequent application of the applied external field.