CN102708245A - Sudden water pollution accident analog simulation and visualization service system - Google Patents
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Abstract
The invention discloses a sudden water pollution accident analog simulation and visualization service system. The system is characterized in that a B/S (browser/server) structure is adopted, an analog simulation computing service of sudden water pollution accidents is provided at a server side, simulation prediction of pollutant diffusion trend is performed by the aid of a water power model and a water quality model according to water quality and hydrological monitoring data, sudden accident information and pollutant information, and simulation results are stored into a database; and the simulation results are associated with space information by means of the WebGIS technique, and spatial and temporal change dynamic effects of sudden water quality pollution accidents are presented in a GIS (geographic information system) map form on a client browser and used for emergency disposal and decision support for the sudden water quality pollution accidents. The sudden water pollution accident analog simulation and visualization service system is available for remote operation and network access, meets the current requirements on rapid and effective analog simulation services of sudden water pollution accidents, and can provide services for various water environmental monitoring systems and water quality monitoring early warning systems.
Description
Technical field
The invention belongs to the crossing domain of environmental hydraulics, geographical information technology and Computer simulation; Relate to a kind of analog simulation of sudden water pollution accident and the construction method of visual service system; Be meant especially through combining WebGIS technology and hydraulics emulation technology building network service system; Dynamic simulative emulation service to sudden water pollution accident is provided, and the visual presentation service.This system can provide effective support and service for monitoring water environment, water quality safety safeguard work.
Background technology
The drinking water safety problem is related to the harmony of broad masses of the people's health, life security and society and stablizes.Frequent the showing great attention to of causing the public of water pollution incident in recent years.The city becomes one of key factor of city dweller's drinking water safety assurance to the reaction velocity and the decision-making treatment ability of sudden water pollution accident, also becomes and weighs the modern important symbol of water environment management decision.
Control and reduce the harm that sudden water pollution incident causes, an effective method is to utilize the simulation of water quality emulation technology that the water pollution incident is carried out analysis and evaluation, to take effective emergency measure and renovation scheme.Through utilizing the waterpower water quality model; Sudden water pollution accident is carried out analog simulation; Obtain water quality and characteristic pollutant diffusion tendency information; Can be the accident downstream area and sudden water pollution accident is carried out emergency disposal decision-making assistant information is provided, in increasing monitoring water environment early warning system, be applied at present.
At present, the main flow software of realizing water quality emulation both at home and abroad is mostly by data processing, science calculating, analogue simulation and the various water quality components of data visualization functional simulation, and through input and output file and other model cooperations.Software is mainly used in the simulation of hydraulics, water quality and the silt transmission in river, is being widely used aspect water resource water management, the hydraulic engineering planning and design, and is obtaining simulate effect preferably.
But above-mentioned simulation of water quality simulation software is because its limitation often runs into a lot of problems in the time of in being applied to sudden water pollution accident:
(1) most simulation softwares are bulky, and unit operation speed is slow, and simulation efficiency is low, influence the fast processing and the reply of sudden water pollution accident;
(2) software function is various, use is complicated, be difficult to comprehensive grasp, require the user to possess higher hydraulics rudimentary knowledge and mathematical simulation professional knowledge, and the fraction function of software is generally only used in the analytical work of sudden water pollution accident;
(3) software application is confined to unit, i.e. its software operation, model construction, result's displaying all can only be carried out in this locality, can't realize the application of networking;
(4) needing the professional to safeguard aspect the maintenance of software and the upgrading.
To above problem; The present invention is through making up a kind of emulation of sudden water pollution co simulate and visual service system that the remote emulation service is provided; Change the traditional mode of simulation of water quality emulation local runtime; Set up and not receive region restriction, self-service sudden water pollution accident remote emulation service mode, realize the effect that the computational resource of system user is distributed rationally, simulation calculation efficient improves and simulation result is shared.
Summary of the invention
Technical matters to be solved by this invention is: overcome the deficiency that existing simulation of water quality simulation software is only limited to local runtime, networked services can't be provided; A kind of support remote-operated sudden water pollution co simulate emulation and visual service system are provided; Utilize this system to set up and not served by region restriction, self-service sudden water pollution accident remote emulation, the user imports accident information, contaminant information, simulation parameters etc. at browser end, and server end is according to user's configuration; Automatically the operation analog simulation calculates; Result of calculation is back to the user browser end, and combining space information provides visual presentation with the ground diagram form.This invention can be the provide support sudden water pollution co simulate simulation calculation service of multitask of all kinds of water quality monitoring early warning systems, can significantly improve the automatization level and the intelligent level of existing water quality monitoring early warning system.
The present invention solves the technical scheme that its technical matters takes: system adopts B/S (browser/server) three-layer network structure construction, comprises data service layer, application service layer and client layer (Fig. 1).Wherein:
(1) data service layer is responsible for the storage of relevant spatial data of sudden water pollution accident and attribute data, shared and management, comprising:
A. basic database: comprise water quality data table, hydrology tables of data, emergency information table, user message table etc.;
B. simulation data base: comprise artificial tasks information table, simulation modular information table, simulation result information table, pollutant emission information table, Map Services information table, realistic model file table;
C. map data base: burst water quality accident correlation space data are organized, comprised basic landform vector data, grid image data, contamination accident data.
(2) application service layer is the logical layer between client layer (Web client) and the data service layer, is responsible for the realization of main business logic, comprising:
A. Web server: be used for request, after the data that need are obtained in the data service layer inquiry, send to client layer and show according to the user browser end;
B. emulation server: be used for simulation calculation request, realize the analogue simulation of sudden water pollution accident is calculated, obtain the concentration time series of Pollutants Diffusion prediction according to the user browser end, as the simulation result data storage to simulation data base;
C. GIS server: adopt ArcGIS Server to realize Map Services, and these services are offered client layer use.
(3) client layer (being also referred to as the Web client tier); Realize by the Flex technology; Be used for accomplishing the integration exhibition of map datum and business datum and the interrelated logic of man-machine interaction, the simulation calculation result data presented to the user with map and diagrammatic form, following functional unit mainly is provided:
A. simulation result display unit: realize simulation result data dynamically playing up on the GIS map; Realize accident association attributes data; Comprise the integration exhibitions on the GIS map such as water quality data, hydrology data, contaminant information, event information, this unit comprises Pollutants Diffusion dynamic mode graphoid and section pollutant levels time series chart.
B. artificial tasks administrative unit realizes the list management of artificial tasks, comprise newly-built, move, stop, deleting, check, issue function such as artificial tasks; Through selecting the existing newly-built artificial tasks of simulation modular, operation is calculated behind the editing parameter, and computing is checked the result after finishing, and meets the requirements like the result, then carries out result's issue, with simulation result data storage to simulation result information table;
C. simulation modular administrative unit: realize the list management of simulation modular, comprise functions such as newly-built, editor, deletion simulation modular, simulation modular is used to derive different artificial tasks;
Key of the present invention is the realization of emulation server and dynamically playing up of simulation result view side; Wherein the characteristics of emulation server are to support the numerical simulation of the sudden water pollution accident of multitask to calculate; Comprise that hydrodynamics is calculated and water quality model calculates; Obtain the predicted time sequence of pollutant levels, be stored to the simulation result tables of data with consolidation form and supply client layer to call demonstration.The simulation result display unit of client layer utilizes the WebGIS technology; The diffusion of realization simulation result data on the GIS map dynamically played up; And realize burst water pollution incident association attributes data, comprise that the stack on the GIS map such as water quality data, hydrology data, contaminant information, event information shows.
As shown in Figure 2, the principle of emulation server is described below among the present invention:
(1) emulation server comprises artificial tasks management engine, simulation calculation engine, simulation result processing engine three parts.
(2) the artificial tasks management engine comprises that simulation modular management, artificial tasks are managed and three parts are controlled in the artificial tasks formation.Wherein:
The simulation modular administrative section is used to support the user to realize newly-built, the editor and the deletion action of simulation modular.The essential information of simulation modular comprises: template ID, template name, template type, affiliated waters, affiliated administrative region, target waters grid data, cross section of river data, boundary condition data, hydrology data, water quality data, template explanation, founder, creation-time, modification people, modification time etc.Wherein grid data is that the grid dividing on the space is carried out in the target waters, and the target waters by certain resolution sizes, is divided into tiny grid, encodes and is stored to map data base.
The artificial tasks administrative section is used to support the user to realize operations such as newly-built, editor and the deletion of artificial tasks.The essential information of artificial tasks comprises: task ID, task names, related simulation modular ID, task status, simulation start time, simulation concluding time, calculate executor, related accident ID, task creation time, computing start time, computing concluding time, operation time step-length, hydrodynamic force output step-length, water quality output step-length, mission statement, task creation people, task creation time, task operation result etc.Wherein task status comprises: treat the operation, in service, the operation finish.
Artificial tasks formation control section is used for waiting according to the artificial tasks database task creation time of the task of moving; Automatically set up the artificial tasks formation; The duty of periodic queries simulation calculation engine; When the state of simulation calculation engine was the free time, the first task in the artificial tasks formation is delivered to the simulation calculation engine carried out simulation calculation automatically; When the state of simulation calculation engine is operation, wait for.
(3) the simulation calculation engine is realized the numerical evaluation of artificial tasks, comprises hydrodynamics simulation calculation and water quality simulation calculation two parts.Wherein:
The hydrodynamics simulation calculation is partly to target waters (river, lake, reservoir); Utilize corresponding one dimension or two-dimentional hydrodynamics equation to carry out modeling and gridding; Call the hydrographic information data; Carry out numerical solution with simulation hydrologic characteristic value (water level, flow), hydrographic features information such as the water level in each moment, flow on the acquisition target waters are for follow-up water quality simulation calculation provides Back ground Information.
The hydrographic features information that the water quality simulation calculation partly utilizes the hydrodynamics simulation calculation partly to produce; And historical water quality information and pollutant initial information; Utilize one dimension or two-dimentional convective-diffusive equation; The convection current and the diffusion process of dissolving or suspended material in the simulation water body are found the solution each the pollutant levels information constantly on the target waters of obtaining.
(4) the simulation result processing engine realizes that the result of calculation of different realistic models is carried out normalization to be handled, to return unified simulation result data layout.After each simulation calculation finishes; The simulation result processing engine is newly-built one and this task corresponding simulation task operation result table in simulation data base, will deposit artificial tasks operation result table in by each pollutant levels information constantly on the target waters of simulation calculation engine acquisition.Artificial tasks operation result table comprises following main field: result items ID, pollutant levels, constantly, corresponding section ID.
Among the present invention the simulation result data browser end dynamically play up techniqueflow shown in Fig. 3, principle is described below:
(1) simulation result data are meant sudden water pollution incident, through the calculating of emulation server, and each pollutant levels time series data constantly on the target waters of acquisition.
(2) dynamically play up; Be meant that the simulation result data show with the form of Pollutants Diffusion dynamic effect picture at the simulation result display unit of client layer; Be the pollutant levels data on the target waters, the mode to show by frame on the GIS map shows continuous animation effect.
(3) dynamically play up the realization of technology, comprise that emulated data transmission, concentration color conversion, grid dynamically play up three parts (like Fig. 5), wherein:
The emulated data hop is used to provide the interface of visit simulation result database, realizes obtaining by frame the purpose of all grid pollutant levels values of a certain moment target waters.With the target water pollution substrate concentration time series data in the simulation result database, convert " playing up frame " form into and offer the Flex application program and dynamically play up.As shown in Figure 4, " playing up frame " comprises frame head and data two parts with the XML format, and the frame header branch comprises frame number, frame data time attribute, task ID etc.; Data division comprises the N segment data, and N is the number of grid in target waters, and every section comprises the pollutant levels value in grid ID, this grid.
The concentration color conversion partly is used to provide the conversion from pollutant levels to the mesh color variable, and the mapping ruler of pollutant levels and mesh color variable is provided with by the user voluntarily, and with the array stored in form in buffer memory.The user is provided with water quality rank and each rank corresponding color variate-value voluntarily, and default setting is to be divided into seven grades, correspondingly carries out relationship maps with light blue, yellow, orange, carmetta, DarkMagenta, redness, seven kinds of colors of brown.
Grid is dynamically played up part and is used for according to time sequencing, according to the pollutant levels numerical value in " playing up frame ", all mesh colors in target waters is carried out continuous assignment play up.For the orderly fluency of realizing dynamically playing up; In system, open up data buffer area, storage is from simulating the start time in the simulation concluding time, all " playing up frame " data; After waiting for that " playing up frame " all is written into, begin to carry out the concentration color conversion again and network is dynamically played up.
Description of drawings
Fig. 1 is a system hierarchy synoptic diagram of the present invention;
Fig. 2 is an emulation server principle schematic of the present invention;
Fig. 3 is an artificial tasks schematic flow sheet of the present invention;
Fig. 4 is the Frame synoptic diagram of dynamically playing up of the present invention;
Fig. 5 is the principle schematic of dynamically playing up of the present invention.
Embodiment
Below in conjunction with specific embodiment, further explain the present invention.Should be understood that these embodiment to be used to the present invention is described and be not used in the restriction scope of the present invention.
Specific embodiment of the present invention is following:
(1) specific embodiment of the invention adopts B/S (browser/server) three-layer network structure construction shown in figure one, comprises data service layer, application service layer and client layer.
(2) employing Microsoft SQL 2005 designs and sets up the basic database and the simulation data base of data service layer, wherein:
A. basic database comprises water quality data table, hydrology tables of data, emergency information table, user message table etc.;
B. simulation data base comprises artificial tasks information table, simulation modular information table, simulation result information table, pollutant emission information table, Map Services information table, realistic model file table; Wherein: the elementary field of artificial tasks information table comprises: task ID, task names, relation template ID, task status, simulation start time, simulation concluding time, calculate executor, corresponding accident title, task creation time, computing start time, computing concluding time, operation time step-length, hydrodynamic force output step-length, water quality output step-length, rainfall runoff output step-length, scheme explanation, task creation people, task creation time, task operation result etc.The elementary field of simulation modular information table comprises: template ID, template name, template type, affiliated waters, affiliated administrative region, target waters grid data, cross section of river data, boundary condition data, hydrology data, water quality data, template explanation, founder, creation-time, modification people, modification time etc.The elementary field of simulation result information table comprises: result items ID, pollutant levels, constantly, corresponding section ID.The elementary field of pollutant emission information table comprises: factor ID, factor coding, factor names, factor abbreviation, factor description, degradation rate size, degradation rate unit etc.; The elementary field of Map Services information table comprises map ID, name map, address of service etc.; The elementary field of realistic model file table comprises: model file ID, model file title, model file path.
(3) adopt the Geodatabase spatial database format design of ArcGIS and set up the map data base of data service layer, comprise basic landform vector database, grid image database, water quality monitoring point data base, contamination accident database, water factory's location database etc.The Geodatabase model is an OO Spatial Database Model among the ArcGIS.The Geodatabase model is integrated in the spatial information and the attribute information of the geographic element relevant with sudden water pollution incident in the same relation type database; Data object according to the level type comes organizing geographic data; What be in the layer structure top is spatial database, down is key element collection (Feature Dataset), factor kind (Feature Class), raster data collection (Raster Dataset) and various codomain rule and the rule of conduct of forming according to different principle of classification.
(4) use ArcGIS Server 9.3 as GIS server and Web application development framework.ArcGIS Server is the comprehensive platform that is used to issue enterprise-level GIS application program; The framework of creating and dispose GIS application program and service is provided; And the function of implementation space data management, spatial visualization, spatial analysis, comprise two critical pieces: GIS server and Web application development framework ADF (Application Developer Frameworks).The GIS server is made up of SOM (Server Object Manager) and SOC (Server Object Container); ADF is used to make up the Web that runs on the GIS Server and uses and Web service.Utilize ArcGIS Server, to different target waters (river, lake, reservoir etc.), issue different GIS services, each service all is the access road of server end GIS resource, and the user is through the GIS resource of these channel share service device ends.
(5) utilize .NET Framework and C# language exploitation emulation server, realize that artificial tasks formation control, artificial tasks calculate, the simulation result output function.Wherein, artificial tasks calculates and to comprise hydrodynamics simulation calculation and water quality simulation calculation, and the simulation calculation algorithm is according to the realization of programming of the pairing Hydrodynamic Model of different water field type and water quality model accordingly.Hydrodynamic Model and water quality model with the one dimension river course are example, and the principle that simulation calculation realizes in the emulation server is described.
The Hydrodynamic Model in one dimension river course is based on d Unsteady Water Flow fundamental equation group (Saint-Venant system of equations); Be used to describe the motion transition of subcritical flow and shooting flow; Be applicable to continuous and discontinuous physical quantity, describe the situation of change of current key element with flow process coordinate x and time t.
The Saint-Venant system of equations is described below:
In the formula: the x-range coordinate; The t-time coordinate; The A-discharge section area; The C-resistance coefficient; The R-hydraulic radius; The Q-flow; The h-water level; G-acceleration of gravity; Q-side direction outflow.
This system of equations is found the solution the employing chasing method, utilizes 4 eccentric implied formats of Preissmann above-mentioned governing equation that disperses, a bit getting partial derivative and carry out difference coefficient and approach in the rectangular node.
The water quality model in one dimension river course is based on the even water quality of river model construction of one dimension; Be used for the solable matter and the suspension material convection current diffusion process of water body are simulated; According to the hydrographic information that one dimension river course Hydrodynamic Model obtains, use convective-diffusive equation, calculate.This equation is based on following hypothesis: 1) material linear attenuation, and on section, mix fully; 2) be applicable to Fick (Ficks) law, i.e. diffusion is directly proportional with concentration gradient.This model fundamental equation general formula can be write as:
In the formula: the mean concentration of the whole section of C-; The Q-flow; The A-discharge section area; The u-mean velocity in section; D-longitudinal dispersion coefficient; k
1-pollutant rate of decay coefficient.
This equation is a parabolic equation; Finding the solution mainly of this differential equation dispersed through method of finite difference; Definition time layer and starting condition and boundary condition successively calculate the concentration value that just can obtain pollutant on corresponding each each section of river, time point upper edge more then.
(6) utilize .NET Framework and ArcGIS API for Flex to realize the visual presentation of burst water pollution event related data and dynamically play up.ArcGIS Flex API is based on the development library of ArcGIS Server REST API under the Flex environment.As the simple open interface towards Map Services, ArcGIS API for Flex uses the catalogue of a URL (Universal Resource Locator, uniform resource locator) as the REST service, thereby the REST resource is showed.
Utilize the Flex development environment---Adoble Flex Builder; Import ArcGIS Flex API class libraries therein; The total interface that can use this class libraries to provide; Through these interface structures URL conveniently visiting the various Map Services resources of issuing on the GIS server, like Map (map resource), Layer (a figure layer resource), Graphic REST resources such as (geometric figure resources).
Utilize ArcGIS API for Flex for the simulation calculation result of burst water pollution incident provides visual service, realize following effect: 1) display base terrain data; 2) show grid image data; 3) show burst water pollution incident related service data, comprise monitoring station information, water factory's information, impurely dot information, interim monitoring point information etc.; 4) provide according to attribute or position and carry out data query; 5) burst water pollution incident simulation result data dynamically plays up.
(7) utilize .NET Framework and ArcGIS API for Flex to realize the dynamic render process of burst water pollution incident simulation result data, comprise that emulated data transmission, concentration color conversion and grid dynamically play up three processes.
The long-range shared object (Remote Shared Objects) that the emulated data transmission utilizes FluorineFX to provide is realized, uses binary-coded AMF agreement Data transmission, supports data serializing and unserializing.FluorineFX provide a kind of under .NET Framework the operation technique to remote procedure call, Flex data, services and the real time data of Flex/Flash.Through creating the NetConnection object, the Connect method through this object is connected to server, just can create a long-range shared object through the SharedObject.getRemote method then; Realize calling of emulated data through calling the Get2DData method then.In the invoked procedure; For realizing obtaining the purpose of all grid pollutant levels values of a certain moment target waters by frame; Target water pollution substrate concentration time series data with in the simulation result database converts " playing up frame " form into and offers the Flex application program dynamically to play up." play up frame " with the XML format, comprise frame head and data two parts, the frame header branch comprises frame number, frame data time attribute, task ID etc.; Data division comprises the N segment data, and N is the number of grid in target waters, and every section comprises the pollutant levels value in grid ID, this grid.In system, open up data buffer area, storage from the simulation start time in the simulation concluding time, all " playing up frame " data, wait for that " playing up frame " all is written into after, begin to carry out the concentration color conversion again and network is dynamically played up.
The realization of concentration color conversion.In whole dynamic render process, color is the important parameter of performance change in concentration, is directly connected to the expression of dynamic rendering effect.The mapping ruler of pollutant levels and mesh color is provided with by the user voluntarily.Through one group of ColorPicker assembly all colours is stored in the Legend array, and binds this array, thereby realize synchronous automatically for variable assignments and interface element with Bindable.In addition the ColorPickerEvent incident is bound in " Change " action of ColorPicker assembly,, will trigger the ColorPickerEvent incident in case the color settings module has been preserved new setting on the legend.System adds ColorPickerEvent through the Color_changeHandler method to be monitored, and in the dynamic demonstration process, at any time the color of playing up is made modification.Realize that the user defines the color of playing up water quality institute other number of classification and each rank correspondence automatically.
The realization that grid is dynamically played up.Make up sequential control and the breakpoint look facility that grid is dynamically played up based on ActionScript and MXML.According to time sequencing,, all mesh colors in target waters are carried out continuous assignment play up according to the pollutant levels numerical value in " playing up frame ".To simulation zero-time and simulation the choosing of concluding time, can realize that the Pollutants Diffusion DYNAMIC PROCESS plays up according to the user, time step sets up on their own by second, branch, hour, day etc.; Former frame, back one frame, the node historical data of checking scene reads, time shaft control etc.Each node has also added monitoring to mouse action; The user can be through clicking; In the breakpoint scan tool, see this pollution index curve map in whole simulation process, each item ATTRIBUTE INDEX of this node and current measured value, curve map is also supported the enlarging function of local curve.
Claims (6)
1. sudden water pollution co simulate emulation and visual service system is characterized in that: adopt B/S (browser/server) three-layer network structure, comprise data service layer (1), application service layer (2) and client layer (3).
2. like claims 1 described data service layer (1); It is characterized in that: the spatial data and the attribute data that be used to store, share, management are relevant with sudden water pollution accident comprise basic database (4), simulation data base (5), map data base (6);
Described basic database (4) comprises water quality data table, hydrology tables of data, emergency information table, user message table etc.;
Described simulation data base (5) comprises artificial tasks information table, simulation modular information table, simulation result information table, pollutant emission information table, Map Services information table, realistic model file table;
Described map data base (6) is organized burst water quality accident correlation space data, comprises basic landform vector data, grid image data, contamination accident data.
3. like claims 1 described application service layer (2), it is characterized in that:, comprise Web server (7), emulation server (8), GIS server (9) as the logical layer between client layer (3) and the data service layer (1);
Described Web server (7) is used for the data query request according to the user browser end, after the data that need are obtained in data service layer (1) inquiry, sends to client layer (3) and shows;
Described emulation server (8); Be used for simulation calculation request according to the user browser end; Realization is calculated the analogue simulation of sudden water pollution accident, obtains the Pollutants Diffusion prediction concentrations time series of sudden water pollution accident, and result data is stored to simulation data base (5);
Described GIS server (9) adopts ArcGIS Server to realize Map Services, and these services are offered client layer (3) use.
4. like claims 1 described client layer (3); It is characterized in that: realize by the Flex technology; Be used for accomplishing the integration exhibition of map datum and business datum and the interrelated logic of man-machine interaction, comprise simulation result display unit (10), artificial tasks administrative unit (11), simulation modular administrative unit (12);
Described simulation result display unit (10) comprises Pollutants Diffusion dynamic mode graphoid and section pollutant levels time series chart; Utilize and dynamically play up the visual presentation that technology is implemented in dynamic (animation) effect of Pollutants Diffusion on the GIS map; Realize accident association attributes data, comprise the integration exhibitions on the GIS map such as water quality data, hydrology data, contaminant information, event information;
Described artificial tasks administrative unit (11) realizes the list management of artificial tasks, comprise newly-built, move, stop, deleting, check, issue function such as artificial tasks; Through selecting the existing newly-built artificial tasks of simulation modular, operation is calculated behind the editing parameter, and computing is checked the result after finishing, and meets the requirements like the result, then carries out result's issue, with simulation result data storage to simulation result information table;
Described simulation modular administrative unit (12) realizes the list management of simulation modular, comprises functions such as newly-built, editor, deletion simulation modular, and simulation modular is used to derive different artificial tasks.
5. like claims 3 described emulation servers (8), it is characterized in that: comprise artificial tasks management engine, simulation calculation engine and simulation result output engine;
Described artificial tasks management engine is realized simulation modular and the management of artificial tasks and the control of artificial tasks formation; Adopt polling mode inquiry simulation calculation engine whether to be in idle condition,, artificial tasks to be moved in the artificial tasks formation is passed to the simulation calculation engine like the free time;
Described simulation calculation engine is realized the calculating of artificial tasks comprising hydrodynamics simulation calculation and water quality simulation calculation according to the control of artificial tasks management engine; Utilize Hydrodynamic Model to calculate and obtain hydrographic features information such as the target waters water level in each moment, flow, utilize the convection current diffusion model to calculate and obtain each pollutant levels information constantly of target waters;
Described simulation result output engine carries out normalization to the result of calculation of different realistic models and handles, and pollutant levels information is stored to the simulation result information table with consolidation form.
6. like claims 4 described technology of dynamically playing up, it is characterized in that: on the GIS map, realize the animation effect of Pollutants Diffusion, comprise that emulated data transmission, concentration color conversion, grid dynamically play up with the mode that shows continuously by frame.
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