149 results about "Electric potential" patented technology

The invention discloses an intrusive rock alteration zone reservoir prediction method comprising the following steps: S1, analyzing and identifying sensitive logging parameters of an intrusive rock alteration zone, and establishing a dominant lithology identification combination chart; s2, establishing a model, and determining seismic response characteristics of intrusive rocks; s3, quantitative evaluation is carried out on the intrusive rock; s4, reservoir prediction of the intrusive rock alteration zone is carried out; and S5, quantitatively predicting the reservoir distribution and thickness of the intrusive rock alteration zone. According to the method, through different lithologic logging response characteristics, a multi-parameter intersection advantage lithologic chart is established, wave group characteristics of intrusive rocks are determined, and the distribution range and thickness of the intrusive rocks are identified by utilizing wave impedance inversion and optimizing attributes of a product of a reflection intensity alternating current component and a phase cosine; and waveform indication inversion of the invaded rock mud shale alteration zone is carried out by using natural potential as a characteristic curve, and reservoir distribution and thickness of the invaded rock alteration zone are predicted and are basically consistent with actual drilling thickness.

In a mass spectrometer (10) for gas analysis, comprising: a mass spectrometer housing (12) evacuated by a vacuum pump; an ion source (16) for ionizing gas atoms or molecules entering the mass spectrometer enclosure (12) and accelerating ions in the mass spectrometer enclosure (12); an ion trap (22) made of an electrically conductive material for collecting ions generated by the ion source (16); an electrical measurement device (24) for measuring the potential or current of the ion trap (22) and connected to the ion trap (22) for inferring the ions collected by the ion trap (22) from the measured potential or current; a magnetic or electromagnetic deflection device configured to deflect or map ions having a specific mass-to-charge ratio to the ion trap (22); an electron barrier (30) made of an electrically conductive material is provided at the ion trap (22), the electron barrier having a lower potential than the ion trap (22) and being configured to generate a reverse electric field to return electrons released from the ion trap (22) onto the ion trap (22).

The invention discloses a method for predicting electrostatic potential in a storage tank in oil collection operation of a storage tank, and the method comprises the following steps: initializing and constructing a knowledge respectively establishing a multipath leakage equivalent circuit model library for a fixed roof tank and an inner floating roof tank, the initial fitting impulse current calculation coefficient range, the optimization constraint condition and the conductivity-temperature relation function library are stored; real-time prediction and monitoring: acquiring multi-dimensional data in real time, preprocessing, dynamically calibrating charge generation items, and calculating charge balance by combining a multi-path leakage model and capacitance correction; meanwhile, a high-frequency flow meter is used for detecting the sudden change of the flow speed to trigger an LSTM transient compensation model to predict the transient electrostatic potential variable quantity, and the transient electrostatic potential variable quantity is superposed on a physical model predicted value result to obtain a final electrostatic potential predicted value; dynamic risk assessment and early warning: triggering different levels of early warning according to an assessment result; and deep analysis of abnormal working conditions: when the abnormal working conditions occur, automatically starting local CFD micro-simulation driven by edge calculation to verify local charge aggregation and electric field distortion conditions.

The invention discloses a material ion transmission mechanism research method based on an electronic holography and integral differential phase contrast technology. The method aims at solving the key problem that a traditional characterization means is difficult to directly associate material defects with a local electric field at the same time of an atomic scale. The method comprises the following steps: preparing a transmission electron microscope film sample containing a specific defect structure and applying a tiny bias voltage; obtaining two-dimensional potential and electric field distribution in the sample by using an off-axis electronic holographic technology; obtaining an atomic structure image capable of distinguishing light elements in the same region by using an integral differential phase contrast technology; and finally, carrying out accurate space alignment and correlation analysis on the information of the specific atom defect and the local electric field so as to directly reveal the coupling relationship between the specific atom defect and the local electric field and the influence mechanism of the specific atom defect on ion transmission. The method disclosed by the invention is particularly suitable for illuminating the ion transmission behavior at the shear surface in the Wadsleep-Roth phase niobium-based fast-charging negative electrode material, and has the beneficial effects of high mechanism analysis depth, strong technical complementarity, guiding significance to material design, good method universality and the like.

A device for monitoring spacecraft electric potential includes a first conductor configured to be in electrical communication with a conductive structure of a spacecraft, a second conductor capacitively coupled to the first conductor, a switch connected to the first conductor and the second conductor such that closure of the switch electrically ties the first conductor to the second conductor, and a monitoring circuit in electrical communication with the second conductor, the monitoring circuit being configured to detect an electric potential of the second conductor relative to the first conductor, the detected electric potential being indicative of a change in electric potential of the first conductor relative to the second conductor since an opening of the switch.

The invention belongs to the technical field of ultraviolet photoelectric detectors, and discloses a vertical diamond ultraviolet photoelectric detector simulation analysis method and related equipment, and the method comprises the steps: building a geometric model, setting material parameters, coupling a semiconductor field and an electrostatic field, and carrying out the simulation calculation. The problems of high cost, time consumption, difficulty in quantification of key parameter influence, difficulty in observation of photon-generated carrier transport operation and the like caused by dependence on actual device preparation in the prior art can be effectively solved; according to the method, simulation result data such as electron concentration distribution, hole concentration distribution, potential distribution and the like can be obtained by simulating the process that ultraviolet light penetrates through a transparent electrode and irradiates a diamond layer and collecting photo-generated carriers to output light current, so that visual and quantitative reference information is provided for research and development personnel; structural optimization and design improvement of the detector can be effectively guided, blindness of a traditional research and development mode is avoided, and research and development efficiency and device performance are remarkably improved.

The utility model relates to electric potential measurement technical field especially is a kind of Zeta electric potential measuring device, including carousel, the upper clamping mechanism is fixed with the lower end of carousel, the lower clamping mechanism is correspondingly arranged in the lower end of upper clamping mechanism, and the upper clamping mechanism and the lower clamping mechanism are connected by thread sleeve, and the installation hole of upper clamping mechanism and lower clamping mechanism is placed to the sample to be measured. By rotating thread sleeve, since the thread direction of thread side ring is opposite, the upper clamping mechanism and the lower clamping mechanism will move oppositely. At this time, extrusion plate will pass through the triangular block of extrusion limiting mechanism in the moving process, so as to drive metal sheet deflection extrusion to sample and apply uniform pressure, firmly clamp sample between upper and lower clamping mechanism, and it is convenient to operate for different size samples.

The invention relates to the technical field of geotechnical engineering monitoring, and discloses a water-rich sand pebble bed pile foundation settlement monitoring system and method.The system comprises at least one intelligent sensing pile internally and integrally provided with a mechanical-temperature sensing module used for obtaining strain and temperature distribution of a pile body, a water-rich sand pebble bed pile foundation settlement monitoring module, a water-rich sand pebble bed pile foundation settlement monitoring module, a water-rich sand pebble bed pile foundation settlement monitoring module and a water-rich sand pebble bed pile foundation settlement monitoring module, the electrical sensing module comprises an electrode array and is used for applying current and measuring potential; the acoustic sensing module is used for passively collecting acoustic emission signals of soil around the pile; and the data processing module is configured to execute joint inversion imaging, that is, the strain and / or acoustic emission signals are used as prior constraints to invert the electrical data so as to generate a three-dimensional resistivity image representing the state of the soil body around the pile. According to the method, through the multi-physical field joint inversion and physical property parameter decoupling technology, accurate positioning of the damage of the soil body around the pile and quantitative diagnosis of the porosity and the water saturation are achieved.

The invention provides a quantitative analysis method and system for an electric field of a rod-like multilayer structure based on a layer potential technology, and relates to the technical field of object detection. Establishing a multilayer structure geometric model, wherein the multilayer structure geometric model comprises an internal rodlike inclusion, a middle layer area and an outer layer area; constructing a potential control equation and a boundary transmission condition of the multilayer structure under a background electric field, and converting an electric field boundary value problem into an integral equation system on a multilayer boundary based on a layer potential theory; carrying out asymptotic analysis on a layer potential operator in the integral equation system, and deducing a quantitative expression of the disturbance electric field; according to the quantitative expression, geometric parameters and position information of the internal rodlike inclusions are uniquely determined through primary boundary electric field measurement data. Therefore, accurate description of a disturbance electric field containing a rod-shaped three-layer structure is realized, and a uniqueness theory that rod-shaped inclusions can be uniquely reduced through one-time boundary measurement is established.

This invention discloses a phase-field method for multi-topological domain cyclic transformation in lead titanate (PTO) ferroelectric thin films. A computational model of the PTO ferroelectric thin film is established, defining polarization, potential, displacement, and oxygen vacancy concentration as field variables. Based on Ginzburg-Landau theory, a total free energy expression for the PTO ferroelectric thin film is established, incorporating oxygen vacancy transport processes and the coupling between oxygen vacancies and the electrostatic field. Combining time-correlated Ginzburg-Landau kinetic equations, mechanical equilibrium equations, electrostatic equilibrium equations, and Nernst-Planck equations, a phase-field model of the PTO ferroelectric thin film coupled with multiple physics fields is established. A stable initial skyrmion domain structure is constructed, and a preset uniform electric field sequence is applied to simulate the cyclic transformation process between skyrmions and flux-closed domains and / or stripe domains. This method can analyze the evolution path, transformation threshold, oxygen vacancy distribution, and cyclic stability of topological domains in PTO ferroelectric thin films under the synergistic effect of an applied electric field and oxygen vacancies, providing a theoretical basis for the design of ferroelectric topological domain multi-state storage devices.

The invention discloses an electric field evaluation method and system based on potential-power transmission line coupling, and relates to the technical field of power system protection, and the method comprises the steps: building a current fluctuation model based on a lightning channel engineering model; hybrid emission of a current element i and a charge element q is adopted based on a current fluctuation model; obtaining a voltage U'under the condition of lossy earth through the induced voltage on each section of line; obtaining a total horizontal voltage based on the voltage under the condition of lossy earth and the voltage under the condition of lossless earth; the electric field is evaluated based on the total horizontal voltage. On the basis of a dipole current model, charge distribution introduction, current generation of magnetic potential and charge generation of potential are combined, the relative positions of charges and current elements can be improved when an electric field channel is discretely simulated by a computer, a near-field electric field can be simulated more accurately, and the simulation precision is improved. Meanwhile, the divergence problem caused by calculation truncation errors can be counteracted when the structure is coupled with a coil type structure, and the accuracy and stability of calculation are improved.

The invention discloses a voltage distribution measurement method based on a nonlinear resistance network. According to the method, a physical grid model composed of a linear resistor and a nonlinear current source is constructed, and a node voltage model equation is established by taking a grid original point as a potential reference point. Two-dimensional measurement data are subjected to dimensionality reduction to form a univariate function by utilizing network physical symmetry, and efficient calculation is realized by combining an FPGA (Field Programmable Gate Array) pipeline architecture. And when the detected voltage value is lower than-15V, starting a cut-off protection mechanism to force the clamping voltage and closing the current source. And finally, a voltage change curve and a two-dimensional thermodynamic diagram are generated through a visualization module, and voltage distribution is visually reflected. The method solves the problems of large error, poor real-time performance and circuit oscillation of a traditional measurement method, is suitable for nonlinear resistance network voltage monitoring in the fields of condensed state physics, plasma control and the like, and has the advantages of high measurement precision, high response speed, reliable hardware protection and the like.

The application provides a method for simulating initial attachment points of lightning strikes on an airplane, which comprises the following steps: establishing a connection between a first software and a second software; presetting an initial simulation environment in the first software, calculating a first electrostatic field value of the initial simulation environment, and transmitting the first electrostatic field value to the second software; obtaining surface charges based on the first electrostatic field value by Gauss law, and judging whether a positive polarity leader is started; obtaining a negative charge quantity of the positive polarity leader according to the principle of electrostatic equilibrium; obtaining an airplane electric potential according to the negative charge quantity; setting a boundary condition according to the airplane electric potential, and calculating a second electrostatic field value; judging whether a negative polarity leader is started based on the second electrostatic field value by Gauss law, and recording a starting position if the negative polarity leader is started. The method solves the problem of dependence of a traditional method on the geometric shape and motion state of the airplane by converting the charge distribution of the leader channel into the potential boundary condition.

The application discloses a phase field simulation method and device of three-dimensional dendrite and electronic equipment, and relates to the technical field of three-dimensional dendrite simulation. The method comprises the following steps: obtaining free energy density; obtaining an initial phase field variable equation, an initial ion concentration equation and an initial electric potential equation; constructing an initial anisotropy parameter function, fitting anisotropy parameters in the anisotropy parameter function to obtain a target anisotropy parameter function; inputting initial conditions and boundary conditions; discretizing the initial phase field variable equation, the initial ion concentration equation and the initial electric potential equation to obtain target phase field variable equations, target ion concentration equations and target electric potential equations in several directions; obtaining target phase field variable distributions, target ion concentration distributions and target electric potential distributions; drawing an isosurface to obtain the morphology of a negative electrode surface or dendrite. The application can reflect the anisotropy of crystal growth from the perspective of three-dimensional space, and can be widely applied in the technical field of rechargeable ion batteries.

The invention provides an ESD release method of a medical endoscope module. The method comprises the following steps: acquiring first parameter information input by a sensing unit, wherein the first parameter information comprises a position relationship between an ESD generation end and an ESD influence end; establishing an electrostatic field simulation model according to the electrostatic field generated by the ESD generation end, and calculating the electric field intensity and potential distribution of the ESD generation end by adopting a finite element method for the space of the ESD generation end; constructing a space coordinate system x-y-z of the ESD generation end, and uniformly dividing grid points; calculating electric field intensity and potential distribution of each grid point according to the position of the space coordinate system, and generating grid point data according to the electric field intensity and the potential distribution according to the grid points; the first parameter information is substituted into the grid points to obtain grid point data, the grid point data is compared with a safety threshold value of the ESD influence end, and if the grid point data is larger than the safety threshold value, an ESD releasing instruction is executed according to a difference value.

A resonance device is provided that includes a first substrate with a resonator having an upper electrode, a second substrate that is disposed such that a first surface faces the first substrate with the resonator therebetween, a first terminal that is disposed on a second surface of the second substrate and that is electrically connected to the upper electrode, a second terminal that is disposed on the second surface and that applies a reference electric potential to the resonator, and an extended wiring line that is connected to the first terminal electrically and that extends on the second surface to an outer edge.

This application provides a simulation system and method for the AC characteristics of vacuum diodes based on a physical information neural network, belonging to the field of numerical simulation technology for electronic devices. The system includes a particle injection module, a particle deposition module, a Poisson equation solving module, an electric field calculation module, and a particle propulsion module. The particle injection module continuously injects electron particles; the particle deposition module maps particle information to a grid and calculates the electron density; the Poisson equation solving module uses a physical information neural network method to solve for the potential distribution based on the electron density; the electric field calculation module obtains the spatial electric field; and the particle propulsion module updates the particle velocity and position, forming a self-consistent coupled simulation. This application achieves continuous and smooth potential solutions through hard constraint embedding of boundary conditions, two-stage optimization, and loss scale adjustment mechanisms, reducing grid dependence and improving computational accuracy and efficiency. It is suitable for numerical simulation of vacuum electronic devices, electron beam systems, and space charge transport problems.

Fluid treatment apparatus 10 for undertaking electrolysis of the fluid to thereby produce hydrogen gas, and / or undertake electro-coagulation of the fluid to thereby reduce the presence of suspended solids in the fluid, and / or to undertake desalination of the fluid, the apparatus, comprising a tank 50 containing a fluid comprising water, the tank including electrodes 120, the electrodes connected to an electrical supply 150, the electrical supply arranged to supply electricity to the electrodes such that the voltage between the anode and a reference point at a constant electric potential varies as a function of time, wherein the time-dependence of the voltage between the anode and the reference point is described by a function Va(t)-

This application discloses a radio frequency feeding structure and a PECVD apparatus with the same, which belongs to the field of chemical vapor deposition. A radio frequency feeding structure is used for a PECVD apparatus. The radio frequency feeding structure includes: at least one first connecting member, the first end of the first connecting member is connected to a radio frequency power supply system; a fixing plate, the fixing plate is provided with a fixing hole, the fixing hole extends in a first direction, and the second end of the first connecting member is connected to the fixing hole; a plurality of second connecting members, the first end of each second connecting member is connected to the fixing hole, and the first end of the second connecting member is adapted to move in the first direction along the fixing hole, and the second end of the second connecting member is used for electrically connecting to an electrode in the reaction chamber of the PECVD apparatus. This application can realize a multi-point feeding mode, which helps to improve the uniformity of the electric potential distribution, and can alleviate the problems of inconvenient installation, disassembly and adjustment of the current multi-point fixed feeding mode.

The invention discloses an implicit particle simulation analysis method for atmospheric pressure micro-scale arc discharge kinetic characteristics, and the method specifically comprises the steps: 1, carrying out the uniform grid division of a calculation region, and placing a plurality of charged simulation particles with initial positions and speeds in each grid; step 2, calculating charge density and current density on each grid node; 3, electric potential and electric field distribution on each grid node is calculated; 4, calculating the stress of the charged simulation particles and updating the coordinates and speed of the charged simulation particles; 5, calculating a new speed after collision based on a collision theory; and step 6, taking the updated coordinates and speed as the coordinates and speed in the step 2, and repeatedly executing the steps 2-6 in a time step until a set number of iterations is reached. According to the method, the problem that simulation time consumption is remarkably increased due to the fact that the space-time step length must be small enough to distinguish the Debye length and the oscillation period of electrons in the existing simulation technology is solved.

Disclosed are systems and techniques to improve coherence of qubits experiencing fluctuating electric potential caused by the environment. In some implementations, a processing device implementing the disclosed techniques includes a first (second) qubit structure formed using a first (second) set of electrodes electrostatically confining a first (second) electron in a direction lateral to a film, the film including a condensed phase of one or more inert gas elements. The processing device further includes a feedback circuitry to subject the first qubit structure to a probe signal, receive a response signal caused by an interaction of the probe signal with the first qubit structure, generate, using the response signal, a correction signal, and subject the first qubit structure and the second qubit structure to the correction signal.

An electro-absorption modulator 100 including a quantum well 102 configured to provide a variable electromagnetic absorption spectrum in response to an applied electric field, wherein the quantum well is a type-II quantum well comprising two material layers, each material layer having a graded material composition, such that the potential in each material layer varies as a function of position.

The invention relates to a fisheye terminal crystal slag prevention precision stamping machining control method. The method comprises the steps that a friction volt potential standard response is established based on a mold of a pre-machined micro-nano structure; a transient friction volt potential is collected in real time by using a suspension ground potential technology; a dynamic differential capacitance spectrum of the lubricating oil film is collected, and the molecular orientation order degree is analyzed; performing time sequence correlation analysis on the potential variation characteristic and the dispersion characteristic, and judging that the phase is a microscopic nucleation stage of the crystal slag when the polarity is detected to be overturned and the order degree is dropped; and the electrostatic minimal quantity lubrication system is triggered, and the charged oil mist is driven by a high-gradient electrostatic field induced by the micro-nano structure to be adsorbed to the friction hot spots in a targeted mode. The method has the advantages that the microcosmic early warning of crystal slag nucleation is realized, and self-aligned targeted lubrication is achieved.

Apparatus for use in determining an electrical admittivity of a subject of interest has a first electrode and a second electrode configured to apply electric excitation to the subject of interest and one or more electric potential sensors provided about the subject of interest, each sensor configured to simultaneously measure an electric potential at a surface of the subject of interest and / or one or more magnetic field sensors configured to simultaneously measure a magnetic field close to a surface of the subject of interest. A controller o simultaneously monitors current or voltage at the electrodes and the sensors to determine an electrical admittivity of the subject.

The application discloses a kind of thermomechanical fatigue crack propagation rate test methods, the present application utilizes DCPD method to sample electric potential is calibrated: first, calibrate crack length a and the corresponding relation curve a-U of electric potential U, multiple crack lengths need to be calibrated;Second, calibrate the corresponding relation curve U-t of electric potential U and time t under temperature cycle of each crack length;Finally, through thermomechanical fatigue (TMF) experiment, the real-time corresponding relation curve U-t of electric potential U and time t in crack propagation process is obtained, time t is converted into cycle number N, is substituted into a-U and obtains a-N relationship curve. Meanwhile, another group of a-N curve is obtained by using long-focus microscope visual method. The crack propagation data obtained by visual method is used to correct and modify the a-N curve data obtained by DCPD measurement, so as to realize accurate and efficient measurement of thermomechanical fatigue crack propagation rate.

The application provides a three-dimensional interconnection parasitic capacitance extraction method and system based on physical information three-dimensional Gaussian sprinkling, which comprises the following steps: step 1, determining the conductors and dielectric regions in a window which need to participate in solving; step 2, uniformly representing a complex three-dimensional interconnection structure; step 3, arranging a set of anisotropic three-dimensional Gaussian'sprinkling' points in each local analysis window to obtain a three-dimensional electric potential field distribution satisfying physical constraints; step 4, obtaining the net charge of each conductor; step 5, assembling a Maxwell capacitance matrix by changing the conductor excitation voltage and repeating the charge solving process, and then extracting the self-capacitance of the target conductor and the coupling capacitance between the target conductor and adjacent conductors. Through the above process, the application realizes high-precision, fast and good process migration parasitic parameter extraction for a complex three-dimensional interconnection structure without relying on a mode library and labeled capacitance data.

The invention discloses a solid neutron source device with potential diversion and magnetic field screening functions and a control method. The device comprises an ion generation structure, a potential diversion structure, a magnetic field screening structure, a neutron target and an insulating shell, the ion generation structure generates mixed ions under the action of the outside, the mixed ions form regular beams under the action of the potential diversion structure and enter the magnetic field screening structure, and due to the fact that different ions show different motion characteristics in a magnetic field, screening is carried out through an insulation pole plate with long rectangular holes. And finally, ion receiving and neutron excitation are completed under the action of strong potential carried by the neutron target. According to the invention, the loss caused by ion generation is effectively controlled through a potential diversion structure, and the utilization efficiency of ions and the neutron yield are improved by adopting a control method that the potential is continuously adjustable. Meanwhile, through a magnetic field screening structure, effective separation and screening of mixed ions are achieved, a control method with a continuously adjustable magnetic field is adopted, the screening range is wide, and the service life of a neutron source is prolonged.

The application discloses a method for quickly obtaining a steady-state space electric field of an insulation layer of a self-powered detector, and comprises the following steps: obtaining radiation field information and detector information at a position where a self-powered neutron detector is located, and simulating to obtain an electric charge deposition amount generated by irradiation current in different radius intervals per unit time of the detector; according to the law of conservation of electric charge, estimating an electric charge loss amount generated by conduction current in different radius intervals of an insulator per unit time under a steady-state condition; combining Ohm's law to establish an expression of the electric charge loss amount generated by the conduction current about an electric field intensity under the steady-state condition, and combining a boundary condition to obtain an electric field intensity distribution, an electric charge density distribution and a potential distribution. The application can effectively improve the calculation efficiency and realize efficient simulation of the sensitivity of the self-powered neutron detector.

The invention discloses an ion thruster acceleration gate downstream pit-groove corrosion morphology prediction method, which comprises the following steps: establishing a computational domain, and determining boundary conditions of the computational domain; ions are injected from the left boundary of the computational domain, charges carried by all the ions are mapped to grid nodes of the computational domain through a weight distribution method, and space charge density distribution is obtained; solving three-dimensional potential distribution and three-dimensional electric field distribution in a computational domain based on space charge density distribution and set boundary conditions; pushing the ions to move based on the three-dimensional electric field distribution, and updating the positions and speeds of all the ions; simulating a charge exchange collision process of ions and neutral atoms based on the updated ion position and speed, and updating the state of the collided ions; counting information of charge exchange ions impacting the downstream surface of the acceleration gate within a set time; and calculating the three-dimensional corrosion morphology of the downstream surface of the acceleration gate based on charge exchange ion information in combination with a sputtering yield model and gate material attributes.

A gas sensor includes a sensor element and a control unit for controlling the sensor element. The sensor element includes a main pump cell, an auxiliary pump cell, a measurement pump cell, and a reference electrode, wherein, in the main pump cell, a repeatedly on-off controlled main pump current is applied so that an auxiliary pump current flowing through the auxiliary pump cell is at a predetermined target current value, and, in the auxiliary pump cell, the auxiliary pump current is applied so that an electromotive force between an inner auxiliary pump electrode and the reference electrode is at a predetermined target voltage value. The control unit includes: a control power supply for applying the repeatedly on-off controlled main pump current; and a setting part for setting the target voltage value based on an electric potential difference generated between the inner main pump electrode and the reference electrode.