86 results about "Discrete event simulation" patented technology

The invention discloses an electronic commerce inventory intelligent optimization method based on big data, and relates to the technical field of big data, and the method comprises the steps: inputting a Pareto optimal solution set into a Mean-Field multi-agent game model and a federal learning framework coordination node strategy, and generating an optimization strategy set containing an elastic safety interval and emergency pairing allocation; optimizing a strategy-driven autonomous evolution type performance mechanism, matching commodity nodes with warehouse nodes, triggering re-routing, and generating a dynamic transport capacity scheduling scheme including AGV collaborative transportation, unmanned aerial vehicle emergency distribution and carbon emission decomposition; the dynamic transport capacity scheduling scheme triggers multi-resolution digital twinborn verification, microscopic discrete event simulation and macroscopic agent model collaborative evaluation are carried out, a simulation verification report is generated, and a multi-resolution digital twinborn verification mechanism carries out multi-resolution digital twinborn verification through collaborative optimization of microscopic discrete event simulation and macroscopic agent rules. And the transport path priority and carbon emission budget allocation are dynamically corrected, and the performability of the elastic strategy set is ensured.

The invention discloses a double-station robot sorting optimization method and system based on digital twinning and a terminal, double improvement of sorting efficiency and safety is achieved by constructing a digital twinning driven collaborative operation system, and the method comprises the steps that firstly, a laser radar and a polarization camera are used for forming a composite sensing unit; geometric morphology, material reflection characteristics and spatial pose data of a target object are synchronously obtained, and are input into a digital twin engine after time synchronization processing; an engine constructs a virtual sorting scene containing a material attribute database based on a physical rendering technology, sub-millimeter-level space registration is achieved through feature fusion of a binocular stereoscopic vision depth map and geometric parameters, high-precision digital twin stations are generated, a system plans a space-time constraint trajectory of a double-station robot in a virtual environment, and a target object is obtained. And an integrated discrete event simulation engine performs operation time sequence conflict prediction, and when a space overlapping risk is detected, an alternative path containing a dynamic obstacle avoidance strategy is generated through a trajectory re-planning algorithm.

The invention discloses a production line layout scheme evaluation system based on a dynamic simulation technology, and the system comprises the steps: converting equipment coordinates, detecting equipment spacing and AGV channel interference, and generating a geometric data set containing position constraint; performing median filtering on the equipment state data to generate a state data set; drag-and-drop layout is carried out through the template, safety spacing and channel width are verified, and an initial layout parameter combination is generated; generating an orthogonal table through a Taguchi orthogonal experiment method, and constructing an optimization space less than or equal to 8 dimensions; performing parameter search by adopting a particle swarm optimization algorithm, and outputting optimized layout parameters; deploying a discrete event simulation engine, and generating a layout evaluation report; and generating a verification data set and performing t verification, and triggering parameter correction and updating the scheme label according to a verification result. The design can effectively improve the feasibility, efficiency and landing reliability of the layout scheme, and significantly reduce the trial and error cost and operation risk of enterprise production line planning.

The invention relates to the technical field of medical instruments, in particular to a medical instrument inventory prediction and optimization method and system based on big data, and the method comprises the steps: collecting hospital inventory, supply chain logistics, Internet of Things sensor and external environment data in real time, and generating a dynamic unified representation vector through cleaning, standardization and modal alignment; and inputting the vector into a hybrid modeling system, predicting future inventory requirements by using a deep neural network and calculating a confidence interval, simulating logistics and storage processes by using discrete events based on supply chain system dynamics, and realizing bidirectional feedback and adaptively updating model parameters through a Bayesian updating algorithm. And finally, the digital twin simulation platform performs discrete simulation on a future inventory operation scene, and generates a feedback signal for online updating the hybrid modeling system, so that closed-loop adaptive updating of inventory prediction and optimization is realized, and the accuracy and response speed of inventory management are remarkably improved.

The invention provides a power plant bucket wheel machine unmanned intelligent operation method and system based on an AI algorithm, and relates to the technical field of bucket wheel machines, and the method comprises the steps: obtaining the operation state information of a power plant and the information of the bucket wheel machine; constructing a power plant-bucket wheel machine digital twin model according to the power plant operation state information and the bucket wheel machine information; based on the power plant-bucket wheel machine digital twin model, correlation analysis of the power plant fuel reserve and the bucket wheel machine transportation task is carried out, and an optimized transportation scheme is obtained; performing discrete event simulation processing according to the optimized transportation scheme to obtain an efficiency simulation result; and performing optimization processing based on an efficiency simulation result, and obtaining an operation scheme by setting a target function and solving an optimal solution. Through future prediction of the state of the power plant equipment and modeling of the bucket wheel machine state transition probability matrix and the equipment cooperative working mode, the operation state of the equipment can be monitored and dynamically adjusted in real time, and the overall operation efficiency is improved.

A system and method for comprehensive data loss prevention and compliance management designed to identify and prevent cybersecurity attacks on modern, highly-interconnected networks, to identify attacks before data loss occurs, using a combination of human level, device level, system level, and organizational level monitoring and protection.

The invention provides an intelligent control method and system for discrete event simulation of an aluminum template production line, and relates to the technical field of data processing.The method comprises the steps that a material transfer path instruction and a cutting process key point coordinate sequence are analyzed from a dynamic anti-interference scheduling strategy, the key point coordinate sequence is input into a curve driving algorithm, and a curve driving algorithm is obtained; a parameterized continuous cutting path curve is generated according to the aluminum template contour precision requirement and the cutting head dynamics constraint; the method comprises the following steps: performing equal-bow-height error discretization processing on a continuous cutting path curve to generate a discrete pose point set with a timestamp, superposing AGV dynamic constraints to generate a speed look-ahead control instruction set, splitting the instruction set into independent control units according to process sections, packaging the independent control units into a time trigger message through an industrial bus protocol, and sending the time trigger message to a server; and the simulation clock synchronization signal is injected into a physical execution unit. According to the invention, intelligent and accurate control of the aluminum template production process is realized, and the production efficiency is effectively improved.

The invention discloses a simulation method, device and equipment, a medium and a program product. Comprises: obtaining a first set; wherein the first set comprises a set of at least part of physical nodes in the GPU cluster; the physical nodes comprise GPU nodes in the GPU cluster and node equipment on which communication between any GPU nodes in the GPU cluster is based; creating a second set corresponding to the first set in a discrete event simulation system; wherein the second set comprises a set of virtual nodes corresponding to the at least part of physical nodes; constructing a virtual communication network corresponding to the second set in the discrete event simulation system; and simulating data processing states of the at least part of the physical nodes based on at least one virtual running state of the virtual nodes in the virtual communication network. According to the scheme, the simulation requirements of the GPU nodes in the GPU cluster can be met.

The invention provides a distributed discrete event simulation platform based on cloud. The distributed discrete event simulation platform effectively solves the problems of computing resource shortage and low computing efficiency in a traditional single-machine discrete event simulation technology. By combining cloud computing and distributed computing technologies, efficient deployment and operation of simulation tasks in a cloud environment are realized. The platform adopts a Master-Slave structure, and a Master node serves as a central dispatching center and is responsible for distribution, real-time monitoring, state feedback and result summarization of simulation tasks; and the Slave node is responsible for executing a specific simulation task. A dynamic allocation strategy based on node resource real-time evaluation is adopted, simulation resources can be dynamically adjusted according to actual requirements, simulation efficiency and result reliability are ensured, and meanwhile simulation cost is reduced. The method has high practical value and wide application prospect.

A system and method are provided for controlling item placement for managing warehouse productivity. The system may include one or more warehouse databases, and one or more processors. The processors may be configured to interface with the one or more warehouse databases, extract, transform and load information from the one or more warehouse databases to form an input dataset, perform cost analysis and discrete event simulation to the input dataset to obtain a candidate dataset, and provide a recommendation for an optimal mix of volume flow through different forward pick areas of a warehouse by applying a linear programming solver on the candidate dataset.

The present application relates to the technical field of electronic digital data processing, and particularly relates to a simulation optimization method and apparatus for a network architecture of an intelligent computing center, and a device and a medium. The method comprises: acquiring training configuration information of a large language model to be trained; on the basis of the training configuration information and a preset discrete event simulation strategy, using a preset simulator to perform training simulation on said large language model, so as to obtain a simulation result, wherein the preset simulator is obtained by using a preset ECS framework; and on the basis of the simulation result, adjusting a network architecture of an intelligent computing center, and obtaining an optimal network architecture of the intelligent computing center. In this way, a network simulator of an intelligent computing center is designed by using an entity component system framework, such that a complete simulation process of the training of a large language model can be implemented, so as to search for the optimal network architecture of the intelligent computing center; and the problem of it not being possible to support the simulation of a large-scale network of the intelligent computing center due to the fact that existing network simulators lack scalability is solved, thereby improving the efficiency and accuracy of simulating a large-scale network of an intelligent computing center.

The embodiment of the invention provides a digital engineering scheduling optimization method and device based on a discrete event simulation technology, and the method comprises the steps: constructing a digital twinborn model of project scheduling according to collected project field data; establishing a project scheduling simulation model by using a discrete event simulation technology according to the digital twinborn model; and performing simulation through the project scheduling simulation model, dynamically adjusting a task execution sequence and a resource allocation strategy, performing task scheduling optimization by using a multi-objective optimization algorithm, pre-judging the change of a construction period, and obtaining latest project field data in real time. Performing dynamic adjustment and scheduling optimization through the project scheduling simulation model based on the latest project field data; and displaying a simulation result of the project scheduling simulation model through a visual interface, and providing an optimization report and decision support information.

The invention provides a JAX-based high-performance discrete event simulation method and system, and the method comprises the steps: firstly completing environment configuration and initialization through an immutable data structure, and generating an EnvParas object with fixed static parameters; secondly, processing event logic by adopting a pure function steepv, and realizing side-effect-free functional event processing and state iteration by combining JAX condition control primitive and lax.scan iterative loop; then, a batch processing task is generated through job packaging, and job-level parallel acceleration is achieved on multiple GPU / TPU devices by means of jax. Jit compiling and jax. Vmap vectorization; and finally, packaging a standardized AI interactive interface, supporting external algorithm calling and finishing result post-processing. Functional programming and JAX hardware acceleration are combined, the simulation speed is increased, meanwhile, the event dynamic accuracy is guaranteed, reinforcement learning large-scale sampling can be seamlessly supported, and the method is suitable for AI application scenes in the field of operational research.

The invention provides a process construction method and BIM-based carbon emission accounting and tracking method and system, and the method comprises the steps: constructing an extended BIM model fusing geology, process and carbon emission attributes, and building a construction carbon emission model through employing a mixed life cycle method; and mechanical energy consumption is simulated and predicted through discrete events, and model components are associated, so that dynamic tracking and visualization of the carbon footprint during the construction period are realized. According to the invention, accurate accounting, dynamic tracking and visual display of carbon emission in the construction period can be realized, a scientific basis is provided for carbon emission management in the construction process, and optimization of construction organization, reduction of carbon emission and improvement of environmental benefits and sustainability of construction projects are facilitated.

This invention belongs to the field of supply chain security assessment technology and discloses a supply chain security event disruption assessment method based on knowledge graphs. It constructs a supply chain knowledge graph containing supply and demand dependencies, BOM dependencies, logistics dependencies, and substitution relationships based on enterprise, factory, warehouse, logistics route, material, and order data. Events are extracted from security event texts and entities are linked to determine the initial affected nodes. The impact intensity and arrival time of downstream nodes are obtained through temporal propagation along the graph relationships. Buffer parameters such as inventory, in-transit status, and substitution switching are combined, and the recovery time distribution is obtained through neural survival analysis based on historical recovery records. In discrete event simulations, available and demand quantities are updated according to in-transit arrival, substitution effectiveness, demand adjustment, and supply recovery. When available quantity is less than demand quantity, a substantial disruption is determined, and the node-level disruption start time, duration, and impact range are output.

The invention provides an electric ship fire rescue scheme optimization method and system, and the method comprises the steps: operating an event queue in a discrete event simulation framework based on a rescue strength agent model and a fire environment model, simulating a fire development process and a multi-agent cooperative rescue process, and generating simulation state data in real time; based on the simulation state data, evaluating the comprehensive rescue efficiency of the rescue scheme in a plurality of preset rescue indexes; based on the comprehensive rescue efficiency, generating a rescue control instruction for optimizing a control strategy of at least one rescue strength agent, converting the rescue control instruction into at least one rescue control event, inserting the rescue control event into an event queue for execution, and performing closed-loop optimization on a multi-agent collaborative rescue process, according to the invention, a simulation-evaluation-regulation and control integrated dynamic closed-loop simulation framework is realized, and the scientificity and efficiency of rescue scheme optimization are improved.

The application provides a multi-vehicle mixed-flow production process reconstruction and dynamic derivation method based on a process network, and belongs to the technical field of intelligent manufacturing. A multi-path process network covering all feasible process paths is constructed to describe the correlation between different processes and the process order exchangeable relationship. A genetic algorithm is used to dynamically select a process path for different vehicles, so that process reconstruction optimization with the minimum maximum completion time of the whole batch of vehicles as the target is realized. A discrete event simulation is used to dynamically simulate the processing process of the vehicles in the process network, so that the vehicle occupation state and the station state information are recorded in real time. A process path dynamic derivation result is generated based on the timing state data, so that the dynamic expression and operation verification of the vehicle flow state and the station resource state evolution process are realized. The application can improve the flexibility of process path configuration and the predictability of the production process.

This invention relates to the fields of intelligent manufacturing and industrial internet technology, and discloses an intelligent scheduling method and system for the continuous production of automotive structural components across multiple processes. The method includes: acquiring equipment status data and material flow location data to obtain a current production state vector; obtaining a preliminary production schedule using a genetic algorithm based on the current production state vector; generating adjustment demand signals based on process time fluctuation indicators; obtaining an optimized production sequence using a simulated annealing algorithm based on the adjustment demand signals; embedding emergency order response demands based on production disturbance factors to obtain a final execution plan; loading the final execution plan into a preset discrete event simulation engine to generate virtual work trajectories, comparing and generating deviation correction parameters, and parsing to generate a production instruction sequence. This method can improve the dynamic adaptability and execution accuracy of the scheduling scheme.

The invention discloses an electronic equipment production line layout digital test method and device oriented to efficiency improvement, and belongs to the technical field of intelligent production line virtual test.The method comprises the steps that a multi-mode requirement input unit inputs the requirement of a user and converts the requirement into standardized interaction data; the intelligent analysis engine unit analyzes user requirements and outputs production line layout requirements, and the visual output unit displays a three-dimensional layout scheme to a user; the three-dimensional model storage and retrieval unit is used for storing a three-dimensional model, the topological relation constraint unit is used for setting a topological boundary for the three-dimensional model, and the historical scheme version management unit is used for storing a production line layout scheme for a user to check and manage; the production line layout debugging and testing module verifies the compliance of the three-dimensional production line layout through a rule engine, evaluates logistics efficiency through discrete event simulation, reinforces learning and optimizes a scheduling strategy, and realizes virtual-real linkage debugging by means of digital twinning. According to the invention, the problems of low communication efficiency and incomplete process constraint inspection of the traditional manual demand are solved.

The application provides a pre-treatment-integration-based offshore wind power discrete event simulation constraint condition integration simplification method, system, device and medium, and is oriented to complex offshore wind power construction simulation. Before simulation starts, possible influencing factors in the simulation process are processed, and are integrated and simplified into a simulation time axis, so that the simulation time axis can be flexibly called in the simulation process. The method provided by the application comprises the following steps: establishing basic simulation content, obtaining limiting conditions affecting construction, establishing an influencing factor model, pre-processing various influencing factors, integrating and generating a process executable time axis, and calling the process executable time axis. On the premise of ensuring simulation efficiency, various factors affecting offshore wind power construction are reasonably analyzed and judged, and the method is suitable for a realistic construction environment and has flexibility and higher confidence.

The present invention relates to a discrete event parallel processing method, terminal device, and storage medium. The method comprises: when a new event is generated during thread processing, the newly generated event is stored in the event queue corresponding to the thread in order of minimum processing time, and the minimum processing time of the event is stored in the event queue as the timestamp of the event; when all threads in the thread pool have completed execution, the event with the smallest sorted timestamp is extracted from each event queue of each thread, and the minimum value of the timestamps of all extracted events is calculated; the next frame timestamp is calculated based on the minimum timestamp and the time step; the minimum timestamp in the event queue corresponding to each thread is compared with the next frame timestamp to determine whether the thread is processing at the time corresponding to the next frame timestamp. The present invention adopts a parallel discrete event simulation method, which can fully utilize the computing performance of multiple CPUs and improve the operation efficiency of the simulation.

The application discloses a micro-grid building simulation training system based on a block chain, and relates to the technical fields of block chain application and power system simulation training. The system comprises a request analysis module, a simulation kernel module, a data encapsulation module and a consensus writing module. The request analysis module analyzes initial configuration parameters of a micro-grid topology structure contained in a simulation training request initiated by a student terminal. The simulation kernel module generates a virtual micro-grid component instance set based on the parameters and calls a discrete event simulation kernel pre-deployed in a block chain smart contract. The data encapsulation module encapsulates electrical attribute parameters of each component instance into a to-be-verified state data block. The consensus writing module performs hash collision verification on the to-be-verified state data block through a block chain consensus node, packs and writes data blocks that pass the verification into a private data channel of a block chain ledger. The step driving module drives the discrete event simulation kernel to step and update running state parameters of each component instance according to the written data blocks and a preset time axis.

The present invention belongs to the technical field related to reliability assessment, and discloses a reliability block diagram and calculation method of a series-parallel system based on discrete event simulation. The reliability block diagram includes multiple reliability components and multiple synchronization components. The reliability components correspond one-to-one to the components in the series-parallel system to be processed, and the connection relationship between the reliability components is connected according to the connection relationship between the components; the starting point and the end point of the model are provided with a starting node and an end point node, and the reliability components are directly connected through connecting lines to form a series relationship, and the front and rear ends of the modules formed by the parallel reliability components are respectively inserted with a node and the reliability components are connected to the nodes through connecting lines, and one node corresponds to one synchronization component. The present invention also discloses a calculation method for the reliability of the above reliability block diagram. Through the present invention, the problem that the reliability model and reliability value calculation of the series-parallel system cannot be established through discrete event simulation is solved.

The invention discloses a discrete event simulation-based rapid dynamic simulation method for a regional heat supply dendritic pipe network, and belongs to the field of heat supply system optimization and simulation. The method comprises the following steps: calculating heat transfer between water supply and return pipelines; regional heat supply network modeling based on discrete time; implementing a simulation optimization method; and verifying the model. The method provided by the invention can face thermal simulation of the regional heat supply dendritic pipe network in various scenes, provides efficient and accurate dynamic response under different operation conditions, can better reflect temperature distribution of each node in the network and heat loss of the pipeline, and provides technical support for energy-saving optimization and intelligent management of a regional heat supply system. Practical application of the method system in a regional heat supply network of Finland shows that the average absolute error MAE is used as a measurement index, the user side temperature error in the model is smaller than 0.5 DEG C, 72-day simulation of the whole regional heat supply network is completed only in 0.7 S, simulation efficiency is greatly improved, and research requirements in the field are met.

The invention discloses a multi-core-oriented high-performance parallel discrete event simulation propulsion method, and relates to the technical field of combat simulation and deduction, and the method comprises the steps: constructing a parallel simulation engine, supporting parallel simulation operation through a time management service and an event management service, and determining parallel discrete event simulation logic based on the parallel simulation engine. Determining a processing flow of a logic process execution event; based on a parallel simulation engine, multi-core-oriented parallel simulation is executed, and the multi-core-oriented parallel simulation comprises a basic service, a parallel discrete event simulation service and an optimization expansion service. According to the method, discrete event simulation can be efficiently carried out in a multi-core processor environment, the simulation speed is improved, the sequence and consistency of event processing are ensured, meanwhile, load balancing is achieved, and overload of a single core is avoided.

The invention discloses a production line scheduling optimization method based on real-time data feedback, and relates to the technical field of production scheduling, and the method comprises the steps: collecting multi-source heterogeneous data of a production line in real time, carrying out the time sequence alignment and difference normalization, and generating a deviation state vector; based on the scheduling feedback intensity index, constructing a lightweight deep reasoning model, performing dynamic mapping, generating a corresponding scheduling intervention level, performing multi-dimensional disturbance influence modeling on the deviation state vector through a graph neural network, and constructing a disturbance causal map; on the basis of the scheduling intervention level and the disturbance causal atlas, key nodes and propagation paths are identified, rule reasoning is carried out in combination with a scheduling rule, and multiple scheduling adjustment actions are generated; and performing multi-stream coupling disturbance cost prediction on the plurality of scheduling adjustment actions through discrete event simulation, and selecting a candidate scheduling adjustment action with the minimum disturbance cost and the optimal comprehensive benefit as a production line scheduling optimization scheme. According to the method, high-robustness and self-adaptive closed-loop scheduling optimization is achieved.

The invention provides an engineering equipment intelligent scheduling system and scheduling method, and belongs to the technical field of engineering equipment intelligent control. The method comprises the steps that a multi-source sensing terminal reads and uploads standardized engineering equipment data to an edge node through a heterogeneous adaptation module; the cloud end constructs a three-dimensional terrain and a digital twinborn scene by using the unmanned aerial vehicle point cloud, and virtual-real calibration is completed through an iterative nearest point algorithm; the intelligent task distribution system decomposes a task into atomization operation units, and an optimal scheduling scheme is screened by adopting an improved genetic algorithm in combination with discrete event simulation; the edge decision node performs conflict resolution and energy consumption optimization cooperative control based on the four-dimensional space-time grid; and when an abnormality is detected, triggering an emergency response mechanism using a DLite algorithm to re-plan the path. According to the invention, the problems of difficult compatibility, scheduling stiffness and multi-machine conflict of heterogeneous equipment are solved, and real-time accurate scheduling and safe closed-loop control of the engineering equipment cluster are realized.

The invention provides a scheduling control method, a scheduling control device, electronic equipment and a storage medium, and relates to the technical field of intelligent warehouse management, and the method comprises the steps: generating a plurality of groups of operation basic sequences in a full arrangement form based on Monte Carlo random sampling; aiming at each group of operation basic sequences, generating an initial operation sequence of each crane corresponding to the group of operation basic sequences, and replacing tail end tasks of each initial operation sequence; performing discrete event simulation on each operation sequence after replacement by taking a rigid demand period of a power generation side as a step length, and performing screening by taking single-period consumption meeting the power generation side in the whole process as a constraint condition to obtain a candidate operation sequence meeting the constraint condition; and selecting a sequence meeting a preset optimization index from the candidate operation sequences as a final scheduling sequence, and controlling each crane to operate based on the final scheduling sequence. According to the method and the device, the final scheduling sequence is generated to coordinate the operation of the multiple cranes, so that the congestion is avoided, and the working efficiency is improved.

The application belongs to the technical field of parallel discrete event simulation and network system simulation, and discloses an intelligent hybrid parallel synchronization method for large-scale distributed simulation, which collects key operation indexes such as neighborhood timestamp lower bound, next event time, round-trip delay quantile value, cross-partition event output rate and virtual time jitter, evaluates system load and communication state in real time, judges the best time to enter optimism or rollback conservation based on the collected key operation indexes, prevents frequent switching by using hysteresis mechanism and minimum residence time, sets time-bounded gates at the mode switching boundary, only allows events within the safe range to propagate, temporarily stores events exceeding the range and sends them in batches when the conditions are met, and thus guarantees causal consistency. The application takes into account real-time performance and robustness, shortens the global empty waiting time, facilitates real-time online acceleration and stable submission in a simulation platform and a message passing interface, and has both performance and interpretability.

The invention provides an outfield test safety early warning method and system based on simulation extrapolation, and relates to the technical field of virtual simulation, and the outfield test safety early warning method based on simulation extrapolation comprises the steps: obtaining model parameters and application scene parameters of to-be-tested equipment, and creating an initial simulation model; according to the motion performance parameters and hierarchical driving strategies of the to-be-tested equipment in various application scenes, in combination with discrete event simulation and dynamics principles, determining a state transition matrix of the motion state of the to-be-tested equipment changing along with time, and correcting the initial simulation model by using the state transition matrix to obtain a state transition matrix of the motion state of the to-be-tested equipment; obtaining a target prediction model; the motion performance parameters comprise a speed parameter, an acceleration parameter, a temperature parameter, a pressure parameter and a displacement parameter; and fusing multi-source detection data acquired in real time to obtain multi-source fusion data, and inputting the multi-source fusion data into the target prediction model to obtain a predicted motion trajectory of the to-be-detected device.