62 results about "Micro simulation" patented technology

The invention relates to an experimental method and a device for simulating the process that microcosmic remaining oil is extracted in a microcosmic simulation model under the condition of oil deposit high temperature and high pressure, researching feasibility of microorganism oil displacement technology in improving enhanced oil recovery after water drive, and carrying out visualized microcosmic oil displacement experimental research under the high temperature and high pressure experimental conditions, in particular to a high temperature and high pressure visual device for simulating microorganism oil displacement and a simulating method thereof. The device comprises a model clamp clamping a microcosmic visual model, a displacement system, a back pressure system, an annular pressure system, a pressure monitoring system, a temperature control system and an image collecting system. According to the device, temperature and pressure can be controlled easily, used space is small, safety performance is excellent, operation is simple, action mechanism of microorganism and petroleum hydrocarbon and starting mechanism of the microorganism on the remaining oil can be conveniently observed in a visualized condition, and the device has important significance on wide application and popularization of microcosmic experiments in oil industries.

The invention discloses a gray scale upgrading method and device for a microservice architecture system, and the method comprises the steps: determining two microservice version sets, wherein the twomicroservice version sets are respectively corresponding to the types and versions of a microservice module before and after upgrading; building an upgrading task, and specifying the type and versionof a to-be-upgraded microservice module; deleting old-version examples of a part of examples of the to-be-upgraded microservice module, building a new-version operation, and forming a new-old logic system; starting user migration; estimating an operation result of the new-old logic system, and determining an upgrading direction; and completing the upgrading or backspacing according to the upgrading direction. According to the invention, the new-old logic system corresponding to the system-level gray scale is constructed in the microservice architecture system, and the operation form of the system-level gray scale is simulated under the occupying of the resource of the microservice-level gray scale, thereby achieving the unification of the system-level gray scale and the microservice-levelgray scale, and providing a universal solution for the microservice architecture system to achieve the gray scale upgrading.

The invention discloses an intersection semiphysical dynamic microcosmic simulation system which comprises an intersection microcosmic simulation module, a light emitting diode (LED) lamp hardware module, a traffic light hardware module, a signal timing control module and an intersection real object demonstration platform, wherein the signal timing control module sends a timing parameter to the intersection microcosmic simulation module and the traffic light hardware module and controls a traffic light of the intersection microcosmic simulation module according to feedback information of the traffic light hardware module; the intersection microcosmic simulation module simulates a situation of vehicles at an intersection and calculates an average delay of each vehicle at the intersection; the traffic light hardware module controls a traffic light and a count-down digital tube of the intersection real object demonstration platform according to the timing parameter; the LED hardware module controls states of LED lamps on the intersection real object demonstration platform according to state data of the LED lamps; and the intersection real object demonstration platform demonstrates a process that the vehicles pass through the intersection in the form of real objects. By the intersection semiphysical dynamic microcosmic simulation system, an intersection traffic light control system and a computer simulation technology are combined together, so that an aim of integrating simulation research and application practice is fulfilled.

The invention pertains to a method for modeling and simulating entities whose interdependencies, as well as the resulting system behavior, can be used to make statements about real behavior. It is comprised of the following steps: the real entities are each represented by an individual software-object which stores the individual behavior of the corresponding entity, wherein this behavior is extracted from real data about the entity and its environment using machine learning methods, in order to then store the individual behavior within the software-object via a set of probabilistic networks (PN), wherein each PN models one sub-behavior of the entity as quantified linear or non-linear dependencies between a set of influence factors and behavior aspects, the influence factors and behavior aspects are represented by the corresponding nodes in the PN. The global interdependencies between the entities are extracted from real data and stored as linear or non-linear dependencies between the entities in the meta-PN and the meta-PN are generated by merging local PNs and by adding the extracted global interdependencies.

An expansible distribution system supporting large scale traffic micro simulation is featured as using simulation entity generating server to generate out simulation entity Agent according to traffic stream distribution state model and traffic entity behavior model based on Agent and HLA techniques, merging generated simulation entity Agent into relevant regional management Agent and coordination Agent, carrying out time synchronous management on said regional management and coordination Agents by RTI of HLA and using display module to carry out real time display of simulation result.

The invention provides an emergency vehicle priority signal control method based on phase difference progressive and circulatory coordination, and particularly provides a signal control strategy based on phase difference progressive and circulatory coordination. The signal control strategy is combined with an emergency vehicle priority signal control strategy for emergency vehicle priority signal control, and an emergency vehicle priority signal timing conversion control strategy and a dynamic phase difference calculation method are provided. In a city road system composed of intersections, three emergency vehicle signal control strategies are adopted for micro simulation experiments, results show that emergency vehicles can safely pass the intersections without stopping by adopting the emergency vehicle priority signal control strategy for control after phase dynamic circulatory and progressive fine adjustment of each intersection, and effect of causing minimum influence on non-emergency vehicles is realized.

The present invention relates to a traffic flow prediction method for microscopic simulation. The method is characterized by comprising the following steps that: a road network model is constructed, and microscopic simulation calibration is performed through using actual data; actual flow is collected, predicted flow data are obtained on the basis of the traffic flow prediction of a particle swarm optimized BP neural network algorithm, the predicted flow is outputted, so that simulation operation is performed, a simulation result in the simulation period is outputted, and the flow values of each road section are obtained; and with the simulation flow values adopted as input, prediction is performed through the prediction algorithm on the basis of the actually acquired flow until the difference values of the flow values obtained through the simulation and flow values obtained through the prediction algorithm satisfy pre-set requirements, and then predicted flow is evaluated in micro simulation software, so that the influence of the prediction result on future traffic can be researched, and analysis can be more scientific and reasonable.

The invention relates to a virtual experiment platform system and method for crowd evacuation feature testing and drilling, in particular to a virtual experiment platform system used for crowd evacuation feature testing and evacuation drilling and based on a virtual reality technology and a microscopic analogue simulation technology, and relates to the technical field of computer virtual application. According to the virtual experiment platform system and method, the evacuation features of crowds under different scene conditions are tested through construction of a computer virtual environment. The virtual experiment platform method comprises the steps that firstly, a crowd evacuation model is built in a computer visual programming environment; secondly, the operation that movement of a controllable virtual leading actor in the crowd evacuation model is controlled through a computer input device is achieved; finally, various virtual evacuation scenes are achieved by changing the building structures and the visual fields of the crowds in the crowd evacuation model and leading an emergency product in. A testing experiment is conducted on a built virtual experiment platform in a participation mode, the evacuation features of the crowds on different scenes can be tested and analyzed, the virtual experiment platform can be applied to evacuation drilling and training when an emergency happens, and the virtual experiment platform system and method have the advantages that the crowd evacuation feature testing and drilling can be easy and can be repeated.

The invention discloses a micro-analysis method applied to the rock material I type crack initiation and expansion process. The method comprises the following steps that 1, a micro model for SiO2 crack initiation is built; 2, the working condition is set, and the crack expansion process is simulated and analyzed, and the average stress and the total crack length of the area at one end of a crack are calculated; 3, a crack stress intensity factor is calculated; 4, crack initiation driving force is calculated; 5, a calculation method of the average speed of microscopic crack expansion is built;6, influence rules of different conditions to the crack initiation and expansion process are analyzed. The method has the advantages that it is first put forward that molecular dynamics is adopted forsimulating the rock material microcrack initiation and expansion process, the stress intensity factor calculation method under microscopic molecular dynamics simulation and crack expansion speed calculation method in microscopic simulation are built, and a theoretical basis is provided for deeply analyzing the whole microcrack expansion process such as rock brittle fracture and creep and mechanism study.

The invention relates to a traffic simulation method and device, computer equipment and a storage medium. The method comprises the following steps: based on initial mesoscopic simulation road condition data and simulation requirements corresponding to a current time period, performing mesoscopic traffic simulation on a target vehicle corresponding to a target travel matrix of the current time period to obtain target driving data of the target vehicle in the current time period, determining the initial mesoscopic simulation road condition data according to the real-time microscopic simulation road condition data of the previous time period corresponding to the current time period; based on the target driving data, conducting microscopic traffic simulation on driving vehicles in the simulation road network corresponding to the initial mesoscopic simulation road condition data, obtaining real-time microscopic simulation road condition data corresponding to the current time period, wherein the real-time microscopic simulation road condition data are used for obtaining the simulation traffic road condition of the current time period corresponding to the simulation requirement. By adopting the method, smooth transition can be ensured during simulation transformation of two adjacent batches.

The invention discloses an urban road online microscopic simulation method and system based on a digital twinborn technology, and the method comprises the following steps: predicting short-time traffic parameters of uncertain factors, and achieving the segment-by-segment decomposition of a plurality of related traffic signals through the digital twinborn technology and an intelligent segmentation algorithm; analyzing traffic jam judgment and early warning based on correlation; carrying out distribution modeling on dynamic traffic induced by online blockage relief of urban roads through a digital twinborn technology, and establishing a plurality of network partitions based on a congestion associated region discrimination method; and optimizing the urban road traffic guidance strategy considering the parameter prediction uncertainty. According to the invention, the digital twinborn technology can be utilized to provide decision support of a blockage relieving strategy for traffic agencies to manage increasingly complex urban traffic networks, the problem scale of complex network traffic control research can be reduced, the secondary development difficulty of the platform is reduced, and the contradiction generated by diversification of traffic application scenes is solved.

The present invention relates to a traffic control algorithm real-time simulation assessment system, comprising: a traffic simulation module, a control platform, and a signal machine. In the system, the control platform is used as a controller, the signal machine is used as an actuator, and the traffic simulation module is used as a controlled object, so as to form loop control. According to the traffic control algorithm real-time simulation assessment system, traffic simulation software is integrated into a traffic signal control system, to form a real-time simulation assessment system combining a signal machine entity and the virtual simulation software, thereby overcoming the shortcoming of untruthfulness because micro-simulation software is used to access a control algorithm in the past, and providing a new assessment method for the control algorithm and a timing plan.

The invention discloses a traffic flow simulation method based on road average speed, and the method comprises the following steps: reading a map model needing to be simulated, and converting a file of the map model into a configuration file which can be directly read and used by traffic microscopic simulation software; generating a driving path of the vehicle in the simulation software by utilizing the configuration file; calculating an expected vehicle speed of the road section; checking the to-be-updated speed queue according to a preset updating frequency, and if a to-be-updated speed value exists in the to-be-updated speed queue, smoothly updating the simulation vehicle speed in the traffic microscopic simulation software; the method has the advantages that the simulation vehicle speed of the simulation environment can be smoothly updated, the simulation effect is more real, and instantaneous speed change of the vehicle at a certain time point is avoided; and during cyclic departure, the road selection of the vehicle is more reasonable, and the simulated flow of the road section can be more conveniently controlled.

The invention relates to a microscopic simulation method based on house selecting models of house-renting selectors and house selecting models of house-purchasing selectors. According to the method, the selection influence factors of the two kinds of selectors at house selecting time are researched, house selecting sub-models of the two kinds of the selectors are established, the utility probability is calculated through a multiple discrete selection method, the utility equation coefficient is estimated through the maximum likelihood estimation method, and the contribution degree, the credibility and the fit goodness of the sub-models can be detected through t statistic value and the adjustable log-likelihood ratio. By the adoption of the method, the house selecting behavior of townsfolk can be simulated, scientific, effective and global decision suggestions can be given to individual house selection of residents, changes of city land utilization can be effectively simulated and predicted, and auxiliary decision support is provided for city construction, management and planning work.

The invention discloses a micro-simulation test system for light-gathering degree of solar reflecting mirrors. The micro-simulation test system comprises an artificial light source for simulating the sun, and a plurality of micro-simulation reflecting mirrors made by shrinking according to geometric proportion, wherein the real process of sunlight reflecting and focusing is simulated by a light path structure with the design of the artificial light source and the micro-simulation reflecting mirrors; the micro-simulation reflecting mirrors are consistent to the real reflecting mirror in shape and optical characteristic, and meet the optical performance is as follows: theta1 is equal to theta2, and lambda1 / D1 is equal to lambda2 / D2, wherein theta1 is an opening angle formed by the sun to the center of the real reflecting mirror, and lambda1 is the wavelength of light wave of measured and gathered light of the sun; and theta2 is the opening angle formed by the artificial source to the center of the micro-simulation reflecting mirror, and lambda2 is the wavelength of light wave of simulated and measured light of the artificial light source. The micro-simulation test system not only can be used for simulating the whole mirror-field system, but also can be close to the actual condition, simultaneously also can be applied in multiple aspects such as exhibition and demonstration model machines, and has the advantages of small structure and low cost and the like.

The invention discloses a calibration method for a microscopic traffic simulation system in an urban expressway interleaving area. The method comprises the following steps: obtaining road basic information of the urban expressway interleaving area; extracting microcosmic vehicle running tracks of the urban expressway interleaving area, and calculating macroscopic traffic flow running characteristics of the urban expressway interleaving area; constructing a traffic flow microscopic simulation model of the urban expressway interweaving area; preliminarily calibrating parameters of the traffic flow microscopic simulation model based on the microscopic vehicle moving trajectory; and adjusting the parameters of the preliminarily calibrated traffic flow microscopic simulation model based on the macroscopic traffic flow operation characteristics. The invention also discloses a calibration device for the microscopic traffic simulation system in the urban expressway interleaving area. The calibration method is beneficial to the more appropriate simulation of the specific driving behavior of each vehicle in the urban expressway interleaving area through the model parameter calibration based on the combination of the microscopic vehicle running track and the macroscopic traffic flow running characteristics of the interleaving area, and the macroscopic operation characteristics of the traffic flow in the interlaced area of the urban expressway are restored microcosmically.

In a parallel computing method performed by a parallel computing system comprising a plurality of central processing units (CPUs), a main process executes. Tasks are executed in parallel with the main process on CPUs not used in executing the main process. Results of completed tasks are stored in a cache, from which the main process retrieves completed task results when needed. The initiation of task execution is controlled by a priority ranking of tasks based on at least probabilities that task results will be needed by the main process and time limits for executing the tasks. The priority ranking of tasks is from the vantage point of a current execution point in the main process and is updated as the main process executes. An executing task may be pre-empted by a task having higher priority if no idle CPU is available.

The invention discloses a real-time online microscopic traffic simulation method and system. The system comprises a simulation time control module used for controlling various data input and output time nodes in the real-time online simulation process; a traffic generation module used for generating traffic flow corresponding to the real-time traffic data of an external point of a road network ata vehicle input point in a microscopic simulation model according to preset data input and output time nodes, and controlling the speed of a vehicle; a route decision-making module used for calculating the steering proportion of each entrance lane of an intersection according to the real-time traffic data of an internal point of the road network and modifying the relative traffic flow of each route decision-making point in the microscopic simulation model; a signal control matching module used for synchronizing a signal control scheme of an intersection non-networked annunciator; and an outputdisplay module which is used for displaying the simulation result through a visual means. The system can operate autonomously all day long and output the evaluation result in real time, the convenience and timeliness are greatly improved, and the invention is of great significance to road network traffic management and organization optimization.

The invention discloses a bidirectional traffic guidance and modification simulation method based on BIM and VISSIM microscopic simulation. The method comprises the following steps: data acquisition; generating a live-action terrain model around the position where the project is located in OpenRoads ConceptStation software; constructing a three-dimensional road model in OpenRoads ConceptStation software according to a live-action terrain model and a traffic guidance and modification map, and preliminarily designing parameters; importing the generated three-dimensional road model and the collected data into VISSIM software, and carrying out microscopic traffic simulation; and guiding the model generated by the VISSIM software back to the OpenRoads ConceptStation software, and carrying out traffic guidance and modification simulation. According to the method, the relationship among people, vehicles, roads and environments can be better reflected on the basis of a traditional microscopic simulation technology, and optimization and decision making of a traffic guide and change scheme are facilitated.

The invention relates to the technical field of natural gas hydrate drilling and production, and discloses a microscopic simulation device for natural gas hydrate drilling and production. The microscopic simulation device for natural gas hydrate drilling and production can realize microscopic simulation for the heat and mass transfer process occurred along with the phase change of a hydrate in a reservoir by using a microfluidic technology, thereby providing a simulation platform for efficient and in-depth study of the phase change and flow law of the hydrate in the reservoir and the law of heat and mass transfer between a reservoir stratum and a shaft, providing theoretical support and optimization suggestions for the actual exploitation of the hydrate, and thus improving the recovery ratio and reducing the accident risk caused by the phase change of the hydrate.

The present invention discloses a traffic assignment method with the interaction of macro and micro traffic simulation systems. According to the method, through selecting a bottleneck and a large-traffic road section in a road network as research objects of the micro traffic simulation system, an output road section flow of the macro traffic simulation system is taken as an input parameter of themicro traffic simulation system, a road section speed result of the micro traffic simulation system is taken as a modified input of the macro traffic simulation system, the two sets of systems interact continuously, and finally an accurate traffic assignment result is obtained. At the same time, since the micro simulation model is added, the influences of micro traffic management and control measures such as road expansion, channelization of an intersection and signal control on road flow and speed can be taken into account, road section flow and speed comparison before and after the management and control is outputted, and the method has a practical value.

The invention belongs to the technical field of traffic transportation station planning design and management, and relates to a method for optimization design and traffic organization micro-simulation of a container terminal gate buffer area. Quantitative bases are provided for the layout design of container terminal gate buffer area facilities, such as the number of gate channels and buffer area scales, quantitative bases are provided for the effective utilization of the gate channels and the buffer area in the dock operating and management process, a time table showing when a ship arrives at a port and leaves the port is used as a boundary condition, and the simulation experiment is carried out on a container truck queuing system in front of a container terminal gate. To achieve the aim, according to the technical scheme, the method for the optimization design and the traffic organization micro-simulation of the container terminal gate buffer area comprises the following steps of the selection of cells; the components of the cells; the operation of a cellular automaton; an entrance cellular automaton model, wherein (1) the cells are initialized, and (2) the cellular automaton is operated; an exit cellular automaton model; wherein (1) the cells are initialized, and (2) the cellular automaton is operated. The method is mainly used for traffic transportation station planning design.

The invention discloses a road network simulation input model construction method and device and a storage medium. The method comprises the steps: establishing a simulation input estimation model according to a road network topological structure, road geometrical characteristics and roadside detection data; calculating theoretical inlet and outlet flow of each flow exchange point of the simulationinput estimation model; calibrating parameters of the simulation input estimation model according to the theoretical inlet and outlet flow of each flow exchange point and a pre-defined constraint condition until the simulation input estimation model can meet all constraint conditions, and obtaining an optimal value of the traffic flow activity intensity; and according to the optimal value of thetraffic flow activity intensity, correcting the inlet and outlet flow of each flow exchange point of the simulation input estimation model to obtain a road network simulation input model. According tothe method, the road network simulation input model can be quickly obtained, macroscopic spatio-temporal data provided by adjacent roadside detection equipment is combined with a microscopic simulation model, and more dynamic information is provided for trunk road network monitoring point construction scale and layout and trunk road network operation supervision strength enhancement.

The invention belongs to the technical field of oil field petroleum exploration and development and in particular relates to a novel micro glass model surface wettability control agent and a novel micro glass model surface wettability control method. According to the technical scheme, the micro glass model wettability control agent comprises methyl methacrylate, polystyrene and polyethylene; synthetic materials with different wetting properties are attached to the surface of a glass model, and then wettability is accurately controlled by virtue of concentrations of the synthetic materials; the micro glass model wettability control agent prepared by adopting a new technology is high in control accuracy, good in stability and resistant to scouring. The micro glass model wettability control agent is mainly applied to making of indoor micro glass models in the petroleum industry and applicable to research on micro simulation of oil displacement.

The invention discloses a method for simulating mechanical stimulation of abnormal blood flow to calcification of valvular cells and relates to the technical field of biological model construction. The method comprises the following steps: S1) adopting a collagenase digestion method for extracting valvular interstitial cells in an aortic valve tissue and preparing into a cell supernatant culture medium; S2) mixing a magnetic bead with an RGD peptide stoste and preparing into a RGD peptide attached magnetic bead; S3) adding the RGD peptide attached magnetic bead into the cell supernatant culture medium acquired in the step S1), abandoning supernatant, cleaning with PBS and then adding into a first culture medium for culturing, putting the first culture medium into a magnetic distortion instrument, simulating the mechanical stimulation of the abnormal blood flow to the valvular interstitial cells by regulating the magnitude, frequency and acting time of the magnetic force of the magnetic distortion instrument and observing the calcification state of the valvular interstitial cells. According to the invention, the micro-simulation for the action of the mechanical stimulation of the abnormal blood flow to the calcification of valvular cells is realized, and meanwhile, the time for constructing a calcification model by a pure calcification culture medium can be shortened.

The invention relates to an experimental method and a device for simulating the process that microcosmic remaining oil is extracted in a microcosmic simulation model under the condition of oil deposit high temperature and high pressure, researching feasibility of microorganism oil displacement technology in improving enhanced oil recovery after water drive, and carrying out visualized microcosmic oil displacement experimental research under the high temperature and high pressure experimental conditions, in particular to a high temperature and high pressure visual device for simulating microorganism oil displacement and a simulating method thereof. The device comprises a model clamp clamping a microcosmic visual model, a displacement system, a back pressure system, an annular pressure system, a pressure monitoring system, a temperature control system and an image collecting system. According to the device, temperature and pressure can be controlled easily, used space is small, safety performance is excellent, operation is simple, action mechanism of microorganism and petroleum hydrocarbon and starting mechanism of the microorganism on the remaining oil can be conveniently observed in a visualized condition, and the device has important significance on wide application and popularization of microcosmic experiments in oil industries.

The invention discloses a multi-agent traffic simulation data storage and updating method. The method comprises the following steps: establishing corresponding vehicle agents for all vehicles; constructing a simulation space diagram, wherein each vehicle agent corresponds to one node in the simulation space diagram; determining a connection corresponding relation between the nodes, and completing edge definition of the simulation space diagram; in combination with the vehicle attribute information, the vehicle following decision-making capability and the vehicle lane changing decision-making capability of each vehicle agent, adopting a depth-first algorithm to perform state updating on the vehicle agent corresponding to each node on the simulation space diagram; updating a node corresponding to each node connection edge on the simulation space diagram based on the position of the vehicle intelligent agent subjected to state updating, and realizing data updating of the simulation space diagram until the simulation time is over. According to the method, the process of repeated reading in the state updating process is avoided, so the microscopic simulation state storage and updating are accelerated from the perspective of a data structure, and the operation efficiency of microscopic simulation is improved.

The invention discloses a method for controlling the double-layer boundary of the road network in the urban congestion area. The microscopic simulation model of the road network is established by using the GPS data of the taxi and the field survey data, and the macro basic diagram (MFD) of the road network is constructed at the same time. Firstly, according to the road network boundary control method including control delay (first-level control), the expected total amount of road network entry is determined, and then each control intersection is expanded into a virtual sub-area road network in a certain way to reduce the variance of road network density distribution In order to control the target, considering the queuing overflow control caused by the control of the total amount of road network entry, the distribution method of the total amount of road network entry (the second layer of control) is developed. Compared with the commonly used boundary control method, the optimal control method of total control allocation improves the performance of the road network stably and effectively, avoids the queue overflow caused by the control of the road network, and has practical engineering application value.