394results about How to "Fast simulation" patented technology

Systems for controlling aspects of recreational or other environments are described. Such systems are especially, but not exclusively, useful for controlling either or both of pool or spa settings and operations and include equipment that may be connected, in any appropriate way, to personal or other computers or other components capable of accepting and processing input. Operations of the systems additionally are capable of being simulated through software.

A method and system for lithography simulation and measurement of critical dimensions with improved CD marker generation and placement is disclosed. The method and system specify a position for measuring a difference between a lithography image and a target pattern, generate one or more CD marker candidates, and select at least one CD marker from the one or more CD marker candidates.

The invention relates to a modeling and numeric value simulating method of ground water environment, comprising the following steps of: (1) carrying out space grid interpolation on surface elevation and embedded depth of groundwater by using space interpolation functions KRIG2D() or TRI<->SURF() functions of IDL (Interface Definition Language) software, and simultaneously dividing a space definite difference molecule value simulation grid to acquire two same differential grid matrixes; setting a simulation region soil property file and a surface elevation and groundwater water level property file; and calculating the embedded depth h0 and unit boundary velocity field of the groundwater; (2) establishing a one-dimension solute transport model in an unsaturated zone; (3) establishing a solute transport two-dimension numeric value model in a saturated zone; (4) carrying out approximate representation on each term in the formula; and (5) solving each component by using IDL matrix algorithm. The invention effectively, quickly and conveniently simulate the groundwater environment based on the IDL platform, thereby the invention is widely used for processes of numeric value simulation, prediction, emergency prediction and the like of the burst pollution event of the groundwater environment.

The invention discloses a modular multilevel converter (MMC) topology converter efficient electromagnetism transient state simulation method. The method comprises the following steps: (1) building a thevenin equivalent circuit of a submodule and acquiring the hevenin equivalent circuit of a series subnodule, (2) opening power system computer aided design (PSCAD) and operating Fortran script editing user-defined module, (3) replacing at least one submodule by using the user-defined module, (4) using status bit to show insulated gate bipolar transistor (IGBT) status in the user-defined module of the PSCAD, (5) and figuring submodule capacitor voltage and submodule current by using a difference equation. The method reduces the number of nodes of a MMC topology converter model, and is quick in simulation speed and high in efficiency.

The invention discloses a monitoring equipment layout method and device and belongs to the field of monitoring. The method comprises: establishing a two-dimensional coordinate system according to basic data input by a user, and receiving a region that needs to be monitored, which is divided by a user, through the two-dimensional coordinate system; converting two-dimensional coordinate data in the two-dimensional coordinate system into three-dimensional coordinate data; calculating a region covering range of the region that needs to be monitored, an actual scene and a horizontal coverage area of the region that needs to be monitored; screening at least one group of monitoring equipment meeting rules from a pre-set specialist rule base according to the region covering range of the region that needs to be monitored, the actual scene and the horizontal coverage area of the region that needs to be monitored; determining the conformity of each group of the monitoring equipment in the screened monitoring equipment group, and determining an optimal monitoring equipment group; and calculating an optimal monitoring layout scheme of the optimal monitoring equipment group. With the adoption of the monitoring equipment layout method and device, the optimal layout scheme can be rapidly, directly and accurately simulated, so that the excessive dependence on the technological level and experiences of constructors is avoided; and the quality of projects can be ensured and the layout efficiency can be improved. Moreover, the monitoring equipment can be sufficiently utilized and the cost is saved.

Executing a simulation of a computer platform, the simulation including simulation models. A dynamic quantum is accessed whose current value specifies a maximum number of units of execution a simulation model is allowed to perform without synchronizing with another simulation model. The dynamic quantum may be received from a user. Respective simulation models are invoked for execution with the current value of the dynamic quantum provided to each of the simulation models. The method also comprises modifying the value of the dynamic quantum based on a simulation event.

The invention discloses a comprehensive traffic network operation situation detection simulation technology facing road and railway networks. The technology is characterized by comprising a regional comprehensive traffic and transportation network emergency simulation framework, a demand estimation and prediction model based on combination of trend prediction and a neural network and an agent-based multi-mode comprehensive transportation network simulation model. According to the comprehensive traffic network operation situation detection simulation technology facing the road and railway networks, by means of exiting road network and railway network traffic data, an overall framework of a regional comprehensive traffic and transportation network emergency simulation platform is constructed in a focused mode, a time-space network modeling technology is applied, and an agent-based multi-mode comprehensive traffic simulation model is constructed.

A method and apparatus are provided to allow co-verification of hardware and software elements asynchronously from a programmable logic device (PLD).

The invention discloses a low-power-consumption whole vehicle controller integrated with a gateway function. The low-power-consumption whole vehicle controller comprises a main control unit, a gatewaycommunication processing unit, an advanced power management unit, an input signal processing unit, an output processing unit, a system storage unit and a breakdown processing unit. A power supply unit supplies electricity to a storage battery, electricity is supplied to a system and a circuit on the periphery of the system by outputting stable voltage through the power supply unit, and normal working of the system is ensured. The main control unit is in data connection with the input signal processing unit, the output processing unit, the storage unit, a breakdown diagnosis unit and the gateway communication unit through a high-speed SPI communication interface, an AD port and a CAN interface, and network information interconnection of a whole vehicle CAN bus is achieved. The low-power-consumption whole vehicle controller can be applied to the situation that a main control unit with pure electric and hybrid vehicle models serving as wholes vehicles coordinates all sub-controllers to work, the new energy whole vehicle controller function is achieved functionally, the gateway function is also achieved, the number of vehicle body electronic controllers is reduced, and the vehicle body space is effectively utilized.

A method and system where a plurality of ECU is rapidly executed while avoiding deadlock by performing conservative event synchronization. The simulation system is provided with 4 layers, namely a processor emulator which is an ECU emulator, a plant simulator, a external peripheral scheduler, and a mutual peripheral scheduler. The external peripheral scheduler performs advanced execution of the plant simulator only during processor emulator reaction delay time (or the time until the next event). The notification to perform advanced execution of the processor emulator is provided until the actual plant simulator stop time. The mutual peripheral scheduler provides notification to the processor emulator to perform advanced execution only during communication delay timing between processor emulators (or the time until the next event). The processor emulator conservatively processes until the earliest time of the notification times. Each peripheral proceeds with processing until the earliest time of the accepted events.

The invention provides a circuit level single event effect simulation platform. The simulation platform can support single event effect simulation analysis of large-scale circuits of 10,000 gate levels or above. The simulation platform comprises a circuit analysis module, a fault injection configuration module, an analysis mode module, a netlist processing module and a result analysis module, wherein the circuit analysis module extracts all sensitive nodes in circuits to generate a circuit node list file; the fault injection configuration module combines the circuit node list file and fault current source-related parameters which are input by a user and need to be injected into the circuits to write a script and randomly select circuit nodes and fault injection time to generate a fault injection file; the netlist processing module writes a script to obtain a result detection file, and combines analysis modes and the fault injection file to generate a stimulus file to be sent to a Fast-Spice simulator; the result analysis module saves and extracts simulation results, and forms different result icons according to different analysis modes.

A contact shape computing apparatus for detecting contact between a plurality of three-dimensional solid models and computing a contact shape between two solid bodies in contact with each other includes the following elements: a collision detector operable to detect a collision or contact between the two solid bodies; a contact plane setting unit operable to define a contact plane that passes through a common region of the two solid bodies; a contact problem solving unit operable to individually solve contact states of the solid bodies with the contact plane as half-contact problems; and a contact shape computing unit operable to compute the contact shape between the two solid bodies by uniting solutions of the half-contact problems for the associated solid bodies, the solutions being obtained by the contact problem solving unit.

The invention discloses a simulation method for electromagnetic scattering characteristic of a plurality of non-coaxial rotating symmetric bodies. The simulation method comprises the following steps of: building a model of each rotating symmetric body and a corresponding equivalent sphere; respectively building first and second local rectangular coordinate systems on each rotating symmetric body; determining the excitation vectors by using plane wave as an excitation source; respectively building scattering matrixes in the first local coordinate system of each rotating symmetric body; building a third local rectangular coordinate system for every two equivalent spheres and determining the transmission matrix between the two equivalent spheres; building rotating matrixes among the first, second and third local rectangular coordinate systems; building an equation set and obtaining equivalent electromagnetic flow on each equivalent sphere by using an iteration method; and determining the scattering field of a remote area, thus obtaining the radar scattering section area. The simulation method disclosed by the invention provides a quick and efficient solution for electromagnetic scattering simulation of a plurality of rotating symmetric bodies, saves spatial resources, and can accurately and quickly simulate the electromagnetic scattering characteristic of the plurality of non-coaxial rotating symmetric bodies.

The invention provides a system and method for rapidly constructing nuclear power secondary circuit system parametric simulation models. According to the system and method, a secondary circuit systemsimulation model with a wider application range is established, and selection, configuration and initialization during the model establishment are realized through a model selection module, a model initialization module and a model boundary module. Through the method for rapidly constructing nuclear power secondary circuit system parametric simulation models, required nuclear power secondary circuit systems can be rapidly constructed, and technical support is provided for the design, assessment and proof of the secondary circuit systems; and meanwhile, an efficient and rapid model establishment way can be provided for the design change, modification and simulation after optimization of the nuclear power secondary circuit systems. According to the system and method, required nuclear power secondary circuit parametric simulation models can be rapidly constructed for different demands in the stages of nuclear power secondary circuit system design, proof and assessment, so as to effectively improve the model establishment and simulation efficiency.

The invention provides a method for quickly simulating airborne phased array pulse Doppler (PD) radar clutter. The method comprises the following steps of: selecting a synthetic aperture radar (SAR) image; dividing the whole clutter scene into rectangular scattering units, and regarding each scattering unit as a point scattering body distributed in the center of the unit; acquiring the initial backscattering coefficient of each scattering unit; dividing the clutter scene into equidistant rings; upsampling a transmitted signal of a PD radar, and performing fast Fourier transform (FFT) on an upsampling result to obtain U(omega); calculating the amplitude A of each scattering unit; calculating the radar backscattering coefficient of each equidistant ring; acquiring an impulse response function of a system, and performing FFT on the function to obtain H(omega); and multiplying U(omega) by H(omega), and performing inverse FFT on a multiplication result to obtain a clutter signal received in a period corresponding to a transmitted pulse. By the method, natural scene clutter is quickly simulated in the airborne PD radar system under the condition of high resolution.

A computer cutting and sewing analog based on force analysis and deformation starts with model build based on material particle spring and central line drawing for soft tissue, rebuilding the object surface, abstracting a central line for the object center. The central line emits a width shaft and connecting with the surface, through center line to drive the surface for integral deformation. A reasonable quick bumping inspection technique is built based on this for cutting and sewing analog. It assimilates the merits of existing method with optimization and integration, realizing accurate and timely analog for computer aided cutting and sewing operation.

The invention provides an echo signal simulation method, a system as well as an echo signal simulator. The method is applied to an echo signal simulator comprising groups of hardware processing chips. The method is performed through the following steps: obtaining the working information of a radar, preset fraudulent model information and electromagnetic waves sent by the radar according to the working information of the radar; using the working information of the radar and the preset fraudulent model information, and calculating fraudulent scattering information corresponding to the preset fraudulent model; calculating the modulation information of a plurality of scattering dots by the groups of hardware processing chips according to the working information of the radar, the fraudulent scattering information and the set of scattering dots' positions; calculating intermediate frequency echo signals based on the set of modulation information and electromagnetic wave digital information; and carrying out upconversion to the intermediate frequency echo signals so as to obtain fraudulent interfering echo signals. According to the invention, it is possible to simulate fraudulent interfering echo signals in a large scenario in real time, therefore raising experiment efficiency.

The invention discloses a data processing method, apparatus and device, and a storage medium. The method comprises the steps of sending an obtaining request of a uniform resource locator; interceptingthe obtaining request of the uniform resource locator, and sending the obtaining request to an agent tool; enabling the agent tool to obtain the uniform resource locator according to a plug-in interface provided by a package capture tool; sending a query request of analog data matched with the uniform resource locator; and when the analog data matched with the uniform resource locator is queriedthrough the agent tool, outputting the analog data. The coupling is reduced in front and back end development to realize parallel development, so that the overall front end development efficiency is improved; and the analog data for a back end is accurate and stable, and scenes are rich, so that the development efficiency is further improved.

The invention provides an intelligent fire-fighting system based on a WiFi probe for fire monitoring and rescue escape. The system comprises an environment sensor module, a data control center, a client terminal, a data transmission module, a personnel positioning module, and a WiFi probe. The environment sensor module is used for acquiring an environment data information in real time. The personnel positioning module is used for performing personnel positioning in real time to acquire a personnel distribution information. The data control center is used for receiving and storing the environment data information and the personnel distribution information, and making a corresponding fire-fighting rescue scheme. The data transmission module is in wireless connection with the data control center through the WiFi probe. The client terminal is used for receiving the real-time environment data information, the personnel distribution information, and the fire-fighting rescue scheme sent by the data control center. The invention further provides an intelligent fire-fighting method based on the WiFi probe for fire monitoring and rescue escape. The invention can provide an effective simulated escape rescue scheme, and effectively disperse the crowd when a fire occurs.

The present invention is a marine controlled source electromagnetic method finite element forward method of anisotropic media. The method comprises: firstly, setting a reference electrical conductivity, wherein three non-zero diagonal elements of the reference electrical conductivity are electrical conductivities in the direction of three main axes: x, y, z; next, setting three Euler rotation angles, and after three times of Euler rotation, obtaining an electrical conductivity tensor model in any direction; then starting from Maxwell equations, obtaining a finite element equation that is satisfied by magnetic vector potential and scalar potential under Coulomb regulations on a condition that the electrical conductivity presents anisotropy; then, performing discrete segmentation on a research region by using a non-structural grid, so that a complicated geoelectric model can be constructed; combining an incomplete LU discomposition pre-condition factor with an IDR(s) algorithm, so as to realize efficient and precise solution of a large sparse linear equation; and finally, deriving vector potential and scalar potential of a secondary field by using weighted moving least squares solution, to obtain each component of an electromagnetic field. The method provided by the present invention has excellent universality and can be promoted for electromagnetic method numerical value simulation with complicated electrical conductivity distribution and high precision.

The invention relates to a frequency comprehensive device behavior level modeling method considering noise source affect, belonging to the technical field of wireless transmission communication. In order to improve the traditional behavior level modeling method carried out for a sigma-delta fraction N frequency comprehensive device in the prior art, the method provided by the invention comprises the steps of: modeling a phaselocked loop system of the sigma-delta fraction N frequency comprehensive device with jitter noise; and modeling a sigma-delta demodulator. The technical scheme of the invention greatly helps a designer design a circuit, and is convenient for early estimating the influence of the phase noise of the frequency comprehensive device to the whole wireless communication system. The invention can ensure that a circuit designer carries out the rapid simulation to obtain system performances, especially noise performance, thereby avoiding using simulators of SPICE, SpectraRF and the like with very low speed for simulation. The invention can be used for accelerating the design process of the sigma-delta fraction N frequency comprehensive device from top to bottom so as to ensure that the designer accurately predicts the system performances as early as possible, especially indexes of the phase noise and the like.

The invention discloses a geological section map online generation method based on nonlinear fitting control. Distribution condition of each earth layer underground along a certain depth can be researched. Normalized processing can be carried out on complex stratums by compiling a network script language. For landforms such as pinch-out, inversion and deficiency possibly occurring in the stratums, the drilling stratums are numbered, rearranged and combined. Virtual serial numbers are added to the drilling stratums, thereby forming new numbered matrixes as the basis for connecting stratum boundaries. The stratum boundaries are smoothly connected based on three times of bezier curve fitting. According to the method, drilling service map layers can be displayed on a network platform, drilling information stored in a database can be called in real time, a user can randomly pick up drilling points on line, thereby finishing drawing a geological section map, the whole process is simple and convenient in operation, and the map forming effect is good.

The invention discloses a millimeter wave radiation brightness temperature acquisition method based on quick ray tracing. The millimeter wave radiation brightness temperature acquisition method based on quick ray tracing comprises the steps: S1 acquiring a stereo target surface microfacet in a scene to be detected; S2 according to the field range and the scanning angle set by the scene to be detected, establishing an imaging plane, according to the coordinates of pixel points on the imaging plane and the position of an antenna which receives a scene radiation signal during the simulation process, obtaining the scanning ray r<scan>', and successively traversing each pixel point and obtaining the scanning ray in a plurality of observation directions; S3 according to the microfacet and the scanning ray, utilizing a ray tracing algorithm to obtain a radiation signal transmission path; and S4 according to the target millimeter wave emissivity and the radiation signal transmission path, obtaining the millimeter wave radiation brightness temperature at the antenna from different observation directions. The millimeter wave radiation brightness temperature acquisition method based on quick ray tracing can effectively and accurately acquire millimeter wave radiation brightness temperature distribution of the target scene, and can provide more useful information for researching the millimeter wave radiation characteristics of a complicated scene.

The invention provides a quick and high-precision numerical simulation method for a two-dimensional magnetic field of a strong magnetic body. According to the method, through two-dimensional model expression of the strong magnetic body, Gaussian parameter design, calculation of the discrete offset wave number, weighting coefficient calculation of a wave number domain, calculation of magnetizationintensity, one-dimensional discrete Fourier inversion, magnetic abnormality calculation of a spatial domain, iteration convergence judgement and other steps, unification on efficiency and precision ofnumerical simulation of the two-dimensional magnetic field of the strong magnetic body is achieved. According to the method, the problems are solved that an existing numerical simulation method for the magnetic field of the strong magnetic body is low in calculation precision and cannot meet fine inversion imaging of large-scale strong magnetic measurement data, and the method helps to carry outresearch of two-dimensional magnetic susceptibility fine inversion imaging of the large-scale strong magnetic measurement data, man-machine interaction modeling and interpretation.

The invention relates to an accurate-period simulation model for a reconfigurable special processor core on the basis of a SystemC accurate-period model. The accurate-period simulation model comprises a control module, a transmission module and an operation module. The control module sends out configuration parameters and is used for controlling interaction with the exterior of the model and the working conditions of all modules in the model. The transmission module is used for receiving the configuration parameters sent by the control module and used for data transmission outside the special processor core and inside the special processor core. The operation modules are used for receiving the configuration parameters sent by the control module and carrying out operation according to the received configuration parameters and the set algorithm. The accurate-period simulation model has the advantages that a good soft hardware interface is provided on the basis of SystemC language modeling; sequential logic of hardware can be well simulated due to the fact that the model is accurate in period, and the problems can be found fast; compared with other simulation tools and verification platforms, a verification platform of the model is easy to set up, and the simulation velocity is high.

The invention provides a circuit simulation method of a single photon avalanche diode detector. A circuit simulation model structure is composed of a direct current path SRV and an alternating current network knowledge acquisition system (KAS). The direct current path SRV is formed by three branch paths which are in parallel connection. Each branch path is composed of a switch S, a resistor R and a direct current voltage source V which are in series connection. The circuit simulation method comprises the following steps: first, establishing a circuit simulation model for an integrated signaling pathway database (SPAD), accurately describing direct current characteristics, alternating current characteristics and temperature effect of the circuit simulation model, and simulating detection behavior of the SPAD to a single photon. Then, the circuit simulation model achieves by using the model hardware description language Verilog-A and conducts circuit simulation of the SPAD on a universal emulator Cadence. The circuit simulation model accurately simulates the detection behavior of the detector to the single photon by using the circuit model, and the detection behavior includes the direct current characteristics and the alternating current characteristics. The circuit simulation model achieves by using the model hardware description language Verilog-A and has good generality. The circuit simulation model can achieve hybrid simulation of devices and circuits on the universal circuit emulator together with other electronic circuits.