73 results about "Virtual plant" patented technology

A method of is disclosed of checking the feasibility or other properties of a process involving movement and/or assembly of items or components. The method comprises setting up, within a computer, in terms of corresponding sets of data, a virtual three-dimensional space and, in such space, virtual versions of the items or components concerned, represented by corresponding sets of data, and operating a program in the computer so as to manipulate the virtual items or components in that virtual space. The method makes it possible to determine, by operation of the computer, potential difficulties in manipulating corresponding real items or components in real space. The method can be used to set up, within a computer, a virtual factory in virtual manufacturing premises with dimensions corresponding to the real premises available, with virtual machinery with data as to dimensions, to positioning, movement and timing of such machinery, and virtual personnel with corresponding data as to dimensions, limits of safe movement, speed of movement and the like. It is thus readily possible to adjust the data which is variable, and thus represents degrees of freedom, to arrive at an efficient workable arrangement.

The invention discloses a carbon capture virtual plant scheduling optimization method, comprising the steps of S1, constructing a dual carbon amount model of a carbon capture unit for a thermal power plant, the dual carbon amount module being used for representing an absorption link and a regeneration link of a liquid storage type carbon capture unit in a decoupling manner; S2, constructing a virtual power plant aggregated with the thermal power plant and a clean energy power plant, and determining a scheduling optimization objective function and constraints of the virtual power plant by maximizing the net income of the virtual power plant; and S3, according to the predicted output of the clean energy power plant, carrying out scheduling optimization on operating parameters of the virtual power plant through the dual carbon amount model. The method of the invention has the advantages of enabling the power plant to obtain better operation benefits, maximizing the net income during the scheduling period, obtaining more significant carbon emission reduction benefits and higher economic benefits, and having better economy and low carbon performance.

The invention relates to a method for analyzing intercept ability of a canopy on photosynthetic active radiation based on a virtual plant. The method comprises the following steps of: building a fine three-dimensional model of a plant in a natural growth form, shaping and trimming the plant, forming fine three-dimensional models of the plant in different crown types; obtaining crown radiation intensity by adopting an astronomical parameter calculation method; respectively simulating direct solar radiation PAR (peer assessment rating) space distribution of the canopy and sky radiation PAR space distribution by adopting a ray tracing algorithm and a turtle shell algorithm; calculating a PAR value of each leaf, obtaining PAR space distribution of the canopy and mean PAR values at different moments; calculating net photosynthetic rates of different canopies by combining a photosynthesis model; repeatedly shaping and trimming, and analyzing the intercept ability of the canopy on the PAR from mean PAR value, PAR space distribution and mean net photosynthetic rate of the canopy at day scale. The method benefits to quantitative analysis on scientific rationality of plant crown types so as to achieve the purpose of scientifically and rationally shaping and trimming the plant or designing the plant.

The invention discloses a virtual power plant-based distributed power supply combination planning system and a virtual power plant-based distributed power supply combination planning method. According to characteristics of output power of the distributed power supplies and according to historical output power of the uncontrolled distributed power supplies, an interval set of the output power of the uncontrolled distributed power supplies is obtained; in a planning and scheduling cycle, with the minimum deviation between the predicted output power of a combined distributed power supply and the expected capacity of a virtual power plant as an aim, a virtual power plant-based distributed power supply combination optimizing model is established, and the optimizing model is solved to obtain an optimal combining scheme of the distributed power supplies. Through establishment of the virtual power plant, the distributed power supplies can be flexibly and efficiently integrated, so that the problem that the distributed power supplies are connected into a power grid on a large scale is solved; through reasonable selection of types and capacities of the distributed power supplies, the problems such as power supply reliability caused by uncertainty of the output power of the distributed power supplies can be solved, and the utilization ratio of the distributed power supplies can be improved.

The invention relates to a verification method for indirect measurement of a ground leaf area index (LAI). The method includes the steps that a virtual plant geometric model base and a virtual vegetation scene base are set up; an observation scheme is designed, simulation implementation is carried out in a virtual vegetation scene according to the principles of all indirect measurement methods of the ground LAI and the observation scheme to form a simulation database; the sum total of the area of xylon parts and the area of triangular patches of leaves in the scene is counted to obtain true values of the LAI, the WAI, the PAI, the parameter of the xylon total area ratio, base components of canopies and the xylon component aggregation index; simulation results of all the measurement methods of the LAT are calculated, the true values of the scene are taken as the simulation calculation results to verify reference values, and the existing indirect measurement methods of the ground LAI are improved, realized in the virtual vegetation scene base and repeatedly circulated to obtain the final existing indirect measurement method of the ground LAI. The verification method does not need to destructively sample vegetation, manpower and material resource investments are small, and verification efficiency, precision and expandability are improved substantially.

A virtual power plant is presented. A virtual power plant couples to one or more virtual power plant units that provide power and/or storage of power to a power grid. In some embodiments, a method of operating a virtual power plant includes receiving a request from a requester; determining whether the request can be performed by a set of units; reporting the result to the requester; and if a subsequent execution request is received from the requester, then executing the request.

The invention discloses a simulation method of layout planning of a digital automobile plant. The method comprises the steps of carrying out three-dimensional design modeling on the digital automobile plant, carrying out systematic and visual three-dimensional simulation on relevant parts of a virtual automobile plant such as buildings, structures and pipelines based on Navisworks and Navisgator software platforms, carrying out corresponding modification and re-planning after analysis of simulation data and a simulation process, and exerting a guiding effect of the virtual digital plant on site operation. Due to relevant technologies and methods such as the three-dimensional modeling of the digital plant, interference checking and panoram view, the rationality of planning layout can be demonstrated visually and dynamically, the real-time modification and re-planning are carried, the demonstration and evaluation of the planning of the virtual plant are achieved, collisions in the planning are reduced, the design cycle is shortened, the construction risk is reduced, and an optimal solution is provided for establishing the digital plant of an automobile manufacturing enterprise.

A computer-based system and method for production planning are described that relies on developing factory shop floor modeling. This modeling includes simulating the factory shop floor to create a Virtual Factory. This Virtual Factory provides the ability to assess any possible production sequence for determining an optimal of production sequence according to the criteria defined the user.

The invention provides a plant growth modeling method and system. The method is characterized by collecting plant point cloud data, calculating shape features of plants, and extracting plant primitives based on the shape features of the plants, designing plant growth rules and fitting plant individual models to obtain plant growth parameters. In comparison, conventional plant growth modeling which focuses on the modeling of plant growth mechanism is mainly based on botany knowledge and expert experience, and is an empirical, qualitative and group-type virtual plant growth simulation; this modeling method is targeted to the behavior of plant population, so that the growth process of a specific plant individual is hard to simulate; and the modeling method depend heavily on professional knowledge and personal experience of botany experts. The plant growth modeling method and system are based on real measurement data of the plants, and can realize real plant growth modeling.

The invention provides a production collaboration method and system, a storage medium, a cloud manufacture platform and a production management system. The method comprises the following steps that: according to the requirement information and the idle capacity information of a manufacture resource demander and a manufacture resource supplier, creating a collaborative production virtual factory formed by the manufacture resource demander and at least one manufacture resource supplier; sending each production task in a collaborative production plan to the corresponding manufacture resource supplier; receiving production schedule information sent from the manufacture resource demander and at least one manufacture resource supplier; sending a production task completion information conformation request sent from certain manufacture resource supplier to a downstream manufacture resource supplier and the manufacture resource demander; and according to a confirmation response, updating that the production schedule information of the production task is delivered. By use of the production collaboration method and system, the storage medium, the cloud manufacture platform and the productionmanagement system, production collaboration among different enterprises can be realized.

The invention relates to a virtual plant canopy photosynthesis effective radiation distribution simulating method of a multi-layer data structure. The method includes the following steps of establishing a virtual plant model and a virtual plane scene high in fidelity and complexity, collecting plant canopy photosynthesis effective radiation intensity values through a related astronomical parameter method or a field measurement method, sequentially establishing the three-layer data structure with a virtual plane scene single-tree geometrical model, a scene and a terrain through a data structure starting method, establishing a direct solar radiation and sky scattering PAR ray vector plane, sequentially tracing all ray vectors on the ray plane through a Monte Carlo ray tracing algorithm and a turtle shell algorithm, traversing the three-layer data structure with the scene, the single tree and the terrain, judging whether rays intersect with triangular patches or not, counting the sky visible rates of all the triangular patches, and calculating direct solar radiation PAR and sky scattering PAR of all the triangular patches to obtain a virtual plane canopy PAR three-dimensional space distribution simulating result.

The invention relates to a plantation density optimizing and analyzing method based on three-dimensional virtual plants. The plantation density optimizing and analyzing method based on the three-dimensional virtual plants is characterized by including the following steps of S10, obtaining morphological structure characteristic parameters of a target planted tree species; S11, placing a three-dimensional model of the target planted tree species on a three-dimensional digital terrain based on the three-dimensional digital terrain which simulates a planted land; S12, calculating the light transmittance and the daily average light transmittance of standing forest colony tree canopies with different plantation densities in different growth stages according to the ray tracing algorithm in the computer graphics; S13, analyzing whether the light transmittance of a standing forest in different growth stages is reasonable or not, outputting the plantation densities, the plantation point configuration method, the line spacing, the plant spacing and the row direction if the light transmittance is reasonable, and repeating the S11, the S12 and the S13 if the light transmittance is not reasonable till the light transmittance is reasonable. According to the plantation density optimizing and analyzing method based on the three-dimensional virtual plants, the quantitative analysis tool can be provided for the plantation design, the intuitive and vivid auxiliary tool can be provided for agriculture technology promotion, and sustainable management, yield promotion and income increasing of forest districts are promoted.

A method of registering virtual equipment for a virtual production system includes generating a production system model and a production process model of a virtual factory on the basis of a structure database (DB), a production DB, and an operation DB, extracting a plurality of equipment behavior catalogs (EBCs) regarding a plurality of pieces of virtual equipment used in the virtual factory from an EBC repository on the basis of the production system model, generating and simulating a plurality of equipment processing models on the basis of the plurality of EBCs and the production process model, and generating an EBC set on the basis of the plurality of EBCs when a result of the simulation satisfies a predetermined criterion.

The invention relates to a three-dimensional visual factory management system which at least comprises the components of a virtual simulation module which can perform virtual simulation on productionelements and/or environment elements for obtaining a three-dimensional virtual factory; a data acquisition module which at least can acquire production data related to the production elements; a 3D visualization module which can associate the production data with a three-dimensional virtual factory, wherein the virtual simulation module is configured to perform first-stage three-dimensional modeling based on the production elements and the environmental elements to obtain the three-dimensional virtual factory, decompose the planar projection of the three-dimensional virtual factory to obtain aplurality of grid regions with first set codes, perform cross decomposition design on the three-dimensional virtual factory to obtain a plurality of subunits with different second set codes, and perform second-stage three-dimensional modeling on the three-dimensional virtual factory in a manner of combining the second set codes of different subunits to obtain a plurality of third set codes whichare different from one another.

The present invention provides a virtual power plant scheduling method and system. The method comprises the steps of: selecting a preset number of wind power plant output scenes, photovoltaic output scenes and electricity price scenes in the same time period in a preset scene library according to a scheduling period; determining the working state and the market electricity price of the corresponding pumped storage power station based on the output scene of each wind power plant, the photovoltaic output scene, the bilateral contract electricity quantity in the scheduling period and the electricity price scene; obtaining a wind power plant output scene, a photovoltaic output scene, the output of the pumped storage power station and the output of the traditional power plant at the maximum profit of the virtual power plant according to the working state of the pumped storage power station, the market electricity price, the power generation cost of the traditional power plant and the starting cost; and performing day-ahead scheduling based on the wind power plant output scene, the photovoltaic output scene, the output of the pumped storage power station and the output of the traditionalpower plant. According to the method and system, the uncertainty of power grid dispatching caused by fluctuation of large-scale distributed power supply access to the power grid, distributed energy output and network load is solved.

The invention relates to a three dimensional tree fine modeling method based on integrated drive of data and rules. The three dimensional tree fine modeling method includes the steps: acquiring geometrical parameters and topological parameters of the morphological structure of a tree limb system, based on L-system grammar rules, extracting the constraint rule of the limb system, and utilizing a turtle interpretation algorithm to establish a three dimensional geometrical model; utilizing a hand-held laser scanner to obtain the point cloud data of the blades and fruit on annual and biennial branches, based on the point cloud data, and generating a fine three dimensional model for the local part of a canopy; and finally according to the geometrical link relationship between the local part and the whole tree in space, utilizing the method for rule modeling to integrate the three dimensional model of the local canopy part with the limb system to form a three dimensional model of the whole tree. By means of the three dimensional tree fine modeling method, a fine and reliable three dimensional model which is highly similar with the practical morphological structure can be formed; a basis for evaluation analysis of small and medium plant types of tree physiological ecological simulation result is provided; and the simulation result for a virtual plant has verifiability.

The invention relates to a search query tool based on objects and spatial positions, at least comprising: a three-dimensional modeler (1) capable of performing virtual simulation on production elements and/or environmental elements to obtain a three-dimensional virtual factory; a data collector (2) capable of collecting production data relating to production elements; a query device (6) capable ofperforming a search query operation based on an input search condition. Second-stage and three-dimensional modeling are performed on the three-dimensional virtual factory in the three-dimensional modeling device (1) to obtain a three-dimensional model with a tree-shaped structure decomposition arrangement. The query device (6) is capable of performing the search query operation on the basis of afirst search mode defined by a plurality of model nodes represented by at least one of a first set code, a second set code, and a third set code, and is capable of performing the search query operation on the basis of a first search mode defined by the model nodes.

The invention discloses a virtual debugging method of an automobile production line based on a digital factory, which comprises the following steps: planning the number, the types and the layout of equipment required by a production line according to a production process; establishing a three-dimensional model of each device in the production line, importing the three-dimensional model into a simulation system, setting the three-dimensional model according to a planned layout, and constructing a line body model of the production line; generating a virtual controller of the three-dimensional model of each device, and controlling a control core of each virtual controller; and compiling a PLC program, importing the PLC program into the PLC system, connecting the PLC system with the control core through an interface, controlling action time sequence and interval of the three-dimensional model of each device by operating the PLC program, and simulating the operation of the production line.According to the invention, a virtual factory is constructed by means of a digital data model to replace objective entity production equipment, and the reasonability and correctness of process production planning are verified. Meanwhile, the continuity of an automatic flow of an automobile production line can be verified, and unnecessary production consumed time is eliminated.