CN112948523B - Accident case scene reproduction method based on three-dimensional webgis - Google Patents
Accident case scene reproduction method based on three-dimensional webgis Download PDFInfo
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- CN112948523B CN112948523B CN202110371912.XA CN202110371912A CN112948523B CN 112948523 B CN112948523 B CN 112948523B CN 202110371912 A CN202110371912 A CN 202110371912A CN 112948523 B CN112948523 B CN 112948523B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/26—Visual data mining; Browsing structured data
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/28—Databases characterised by their database models, e.g. relational or object models
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Abstract
The invention discloses an accident case scene reproduction method based on three-dimensional webgis, which comprises the following steps: constructing a 3D map visualization framework; the browser runs the three-dimensional digital earth; deploying geographic information resource service; creating an accident case data table and an accident case node table; dynamically and visually editing the accident case by the Web map; dynamic streaming data presentation with time as axis. According to the accident emergency rescue handling method, the scene picture is marked on the three-dimensional satellite map and stored in a warehouse by the accident case, and finally the scene picture is restored according to the accident case node time sequence, so that the accident emergency rescue handling process of accident occurrence, handling and emergency response ending is realized, and support is provided for accident analysis and summary; meanwhile, an emergency drilling script can be input, and the training work of an emergency rescue team is facilitated.
Description
Technical Field
The invention relates to an accident case scene reproduction method based on three-dimensional webgis.
Background
The traditional technology can not perform visual multi-disc demonstration on each node of an accident case. The emergency disposal capability of emergency events of safety production and natural disasters in the prior art is poor, and quick response, sensitive and smooth operation, accurate authoritative command, powerful and efficient disposal cannot be realized. With the development of hardware technology in recent years and the support of a plurality of three-dimensional graphic drawing software and hardware libraries, in order to reduce the loss caused by accident disaster and natural disaster to the maximum extent, the development of accident case recurrence deduction based on three-dimensional map engine technology is urgent to realize case summary evaluation and experience summary of emergency rescue command.
Disclosure of Invention
The present invention is directed to solving the above problems, and provides an accident case scenario reproducing method based on three-dimensional webgis, comprising the steps of:
based on a WebGL3D drawing protocol, a 3D map visualization framework is constructed by using a JavaScript dynamic scripting language:
verifying whether the browser supports WebGL, compiling and running a 3D map frame based on JavaScript through an IDE tool, and opening the browser to run a three-dimensional digital earth;
deploying geographic information resource service:
analyzing and sorting satellite image data, topographic data, three-dimensional models and vector slice images, and obtaining the satellite image data, topographic data, three-dimensional models and vector slice images of the LOD structure issued by a Tomcat server by a system;
creating an accident case data table and an accident case node table:
creating an accident case data table through a MYSQL relational database management system, and creating an accident case node table through the MYSQL relational database management system;
dynamic visual editing of the accident case on the Web map:
the method comprises the steps that an IDE tool compiles a dynamic visual accident case of a Web map, a browser runs the Web map to dynamically and visually edit the accident case, and visual data of the accident case map are obtained;
dynamic streaming data presentation with time as axis:
the method comprises the steps that a browser runs a three-dimensional digital earth, accident case map visual data are loaded, accident case node information is extracted, an event case copy is started according to a time axis to deduce a polling task, and the polling task switches different view angles on a map to display a map view angle and map plotting data of each node according to a case node sequence.
The invention has the beneficial effects that: according to the accident emergency rescue handling method, the scene picture of each important link handling step is marked on the three-dimensional satellite map and put in storage of the accident case, and the scene picture of each handling process is finally restored according to the accident handling process time sequence, so that the accident emergency rescue handling process of accident occurrence, handling and emergency response ending is realized, and support is provided for accident analysis and summary; meanwhile, an emergency drilling script can be input, and the training work of an emergency rescue team is facilitated.
Drawings
FIG. 1 is a flow chart of the working principle of the present invention;
fig. 2 is a flow chart of the working process of the present invention.
Detailed description of the preferred embodiments
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, the accident case scenario reproducing method based on three-dimensional webgis of the present invention includes the following steps:
based on a WebGL3D drawing protocol, a 3D map visualization framework is constructed by using a JavaScript dynamic scripting language:
whether the browser supports WebGL or not is verified, a 3D map frame based on JavaScript is compiled and operated through an IDE tool, and the browser is opened to operate a three-dimensional digital globe;
deploying geographic information resource service:
analyzing and sorting satellite image data, topographic data, three-dimensional models and vector slice images, and obtaining satellite image data, topographic data, three-dimensional models and vector slice images of an LOD structure issued by a system through a Tomcat server;
creating an accident case data table and an accident case node table:
creating an accident case data table through a MYSQL relational database management system, and creating an accident case node table through the MYSQL relational database management system;
dynamic visual editing of the accident case on the Web map:
compiling a dynamic visual accident case of the Web map by an IDE tool, and running the dynamic visual accident case of the Web map by a browser to obtain visual data of the map of the accident case;
dynamic streaming data presentation with time as axis:
the method comprises the steps that a browser runs a three-dimensional digital earth, accident case map visual data are loaded, accident case node information is extracted, an event case replication deduction polling task is started according to a time axis, the polling task switches different view angles on a map according to a case node sequence, and map view angles and map plotting data of each node are displayed.
Specifically, the accident case data table includes a case title, an event time, an event place, a detailed address, a longitude, a latitude, an event type, an event level, an event description, and an event summary.
Specifically, the accident case node table includes titles, texts, pictures, videos, map views, and map annotations.
Specifically, the accident case node information includes an accident influence range, an evacuation route, a vehicle aggregation area, a rescue route, and a warning range.
The accident case handling process scene is constructed by taking a satellite map database and a WebGIS as a basis and a three-dimensional map engine technology as a core, and the specific working principle comprises the following steps:
acquiring accident case basic information and storing the accident case basic information into an accident case base, wherein the acquired accident case basic information comprises information such as case titles, event occurrence time, event occurrence places, detailed addresses, longitudes, latitudes, event types, event levels, disposal ending time, event descriptions, event summaries and the like;
acquiring accident case node information including titles, contents, scene pictures or videos according to a time sequence, and storing the information in an accident case expansion information base;
creating an accident case data table through a MYSQL relational database management system, and creating an accident case node table through the MYSQL relational database management system;
the method comprises the steps that an IDE tool compiles a dynamic visual accident case of a Web map, a browser runs the Web map to dynamically and visually edit the accident case, and visual data of the accident case map are obtained;
the browser runs the three-dimensional digital earth, loads the visualized data of the accident case map, extracts the node information of the accident case, and starts event case replication and deduction polling tasks according to a time axis; marking and perfecting a field picture of each accident case node of the accident cases on the three-dimensional satellite map, and storing the field pictures into an accident case expansion information base;
the scene picture of each accident case node of the accident case is plotted and restored on the map, and the content marked on the three-dimensional satellite map comprises models of a two-dimensional plane map, a three-dimensional stereo map, a command diagram, a point and characters; displaying accident case node information including an accident influence range, an evacuation route, a vehicle aggregation area, a rescue route and an alert range on a three-dimensional satellite map;
adjusting the visual angle of the scene picture of each accident case node of the accident case on the three-dimensional satellite map;
and broadcasting the scene pictures of the node information of each accident case in turn according to the time sequence.
According to the accident emergency rescue handling method, the scene picture of each important link handling step is marked on the three-dimensional satellite map and put in storage of the accident case, and the scene picture of each handling process is finally restored according to the accident handling process time sequence, so that the accident emergency rescue handling process of accident occurrence, handling and emergency response ending is realized, and support is provided for accident analysis and summary; meanwhile, an emergency drilling script can be input, and the training work of an emergency rescue team is facilitated.
The technical solution of the present invention is not limited to the limitations of the above specific embodiments, and all technical modifications made according to the technical solution of the present invention fall within the protection scope of the present invention.
Claims (2)
1. An accident case scene reproduction method based on three-dimensional webgis is characterized by comprising the following steps:
based on a WebGL3D drawing protocol, a 3D map visualization framework is constructed by using a JavaScript dynamic scripting language:
verifying whether the browser supports WebGL, compiling and running a 3D map frame based on JavaScript through an IDE tool, and opening the browser to run a three-dimensional digital earth;
deploying geographic information resource service:
analyzing and sorting satellite image data, topographic data, three-dimensional models and vector slice images, and obtaining the satellite image data, topographic data, three-dimensional models and vector slice images of the LOD structure issued by a Tomcat server by a system;
creating an accident case data table and an accident case node table:
creating an accident case data table through a MYSQL relational database management system, and creating an accident case node table through the MYSQL relational database management system; the accident case node table comprises titles, texts, pictures, videos, map visual angles and map labels;
dynamic visual editing of the accident case on the Web map:
the method comprises the steps that an IDE tool compiles a dynamic visual accident case of a Web map, a browser runs the Web map to dynamically and visually edit the accident case, and visual data of the accident case map are obtained;
dynamic streaming data presentation with time as axis:
the method comprises the steps that a browser runs a three-dimensional digital earth, accident case map visual data are loaded, accident case node information is extracted, an event case replication is started according to a time axis to deduce a polling task, the polling task switches different view angles on a map to display a map view angle and map plotting data of each node according to a case node sequence; the accident case node information comprises an accident influence range, an evacuation route, a vehicle aggregation place, a rescue route and a warning range.
2. The method of claim 1, wherein the accident-case data table includes a case title, a time of the event, an event place, a detailed address, a longitude, a latitude, an event type, an event level, an event description, and an event summary.
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| US7725529B2 (en) * | 2003-11-19 | 2010-05-25 | George Mason Intellectual Properties, Inc. | Geographic information system |
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