CN111538745A - Special data POI retrieval system and retrieval method for emergency field - Google Patents
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Abstract
The invention relates to a special data POI retrieval system and a retrieval method for the emergency field, wherein the system comprises a resource layer, a data layer, a business layer, a service layer and an application layer, wherein the resource layer is a data source; a data layer adopts a distributed file database MongoDB to build an emergency special topic database; the business layer comprises a geographic information system and a core business component developed based on the geographic information system, and a thematic data POI retrieval environment based on the geographic information system is built; the service layer is based on RESTful architecture, uses a service interface of a Java development operation database, realizes the calling of thematic data retrieval service based on an HTTP method, and provides a data service interface for the application layer; and the application layer is used for executing POI retrieval. The invention solves the problem of low emergency special data retrieval efficiency, and can meet the use requirements of different service scenes of prevention and emergency disposal.
Description
Technical Field
The invention relates to the technical field of thematic data, in particular to a system and a method for searching thematic data POI (point of interest) for the emergency field.
Background
The emergency public events occur frequently, great threat is brought to social economy and life safety of people, and urgent needs are provided for improving emergency capacity. The state is greatly promoting to establish a national emergency platform system taking a national institute emergency platform as a core and developing national emergency thematic data acquisition work. The emergency thematic data is used as an important component of the emergency platform and provides data guarantee for performing risk analysis, coordinating and commanding, resource scheduling and the like of the emergency platform.
The emergency special topic data has wide sources and huge data scale. The traditional thematic data application method is simple in integration, all relevant data are displayed in a tree structure in an application system, a global retrieval function is provided according to classified viewing or keywords, loading and retrieval efficiency is low, and required emergency resource (emergency guarantee resource, major hazard source, protection target and the like) distribution and attribute information cannot be obtained at the first time, so that a reasonable emergency scheme needs to be formulated by spending a long time, and decision data support cannot be effectively provided for an emergency platform. How to efficiently retrieve emergency information resources is an urgent problem to be solved in emergency management construction.
Poi (point Of interest), an instant point Of interest, may refer in a broad sense to all geographical objects that may be marked out on a map. In the emergency field, POIs refer to special data objects such as emergency guarantee resources, hazard sources, protection targets and the like, and one POI may be one material resource, one hazard source, one rescue team and the like. The user can search POI in the emergency platform map, for example, search medical resources in an area 3km around an accident point. The distribution display of the POI points of interest of the emergency special data can provide important decision-making basis for government to analyze situation and make emergency schemes.
Disclosure of Invention
The invention aims to provide a special data POI retrieval system and a retrieval method for the emergency field, which solve the problem of low retrieval efficiency of emergency special data and can meet the use requirements of prevention and emergency disposal under different service scenes.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a special data POI retrieval system facing to the emergency field comprises a resource layer, a data layer, a business layer, a service layer and an application layer, wherein:
the resource layer comprises a government data center, a national emergency platform and a mobile terminal data terminal;
the data layer adopts a distributed file database MongoDB to build an emergency special database which comprises a geographic information database, a resource database, a major hazard source database and a protection target database;
the business layer comprises a geographic information system and a core business component developed based on the geographic information system, and a thematic data POI retrieval environment based on the geographic information system is built;
the service layer is based on RESTful architecture, uses a service interface of a Java development operation database, realizes the calling of thematic data retrieval service based on an HTTP method, and provides a data service interface for the application layer;
and the application layer is used for executing POI retrieval.
Further, the service layer comprises a geometric retrieval service and an administrative division retrieval service, wherein the geometric retrieval service selects a longitude and latitude coordinate array according to geometric characteristics of the shape, and the administrative division retrieval service sets administrative divisions of multiple levels as administrative parameters.
Further, the application layer comprises a POI retrieval module and a result display module,
the POI retrieval module initiates a query request to the service layer to acquire a POI target meeting retrieval parameters, wherein the retrieval mode comprises default retrieval, peripheral retrieval, geometric retrieval and intra-city retrieval;
and the result display module is used for displaying the retrieval result on an interface according to the POI priority and loading POI icons on the map, and different types of thematic data POI are displayed in a layer mode in a superposition mode.
A method for searching special data POI facing to emergency field includes the following steps:
selecting a retrieval mode, including default retrieval, peripheral retrieval, geometric shape retrieval and intra-city retrieval;
step two, acquiring a retrieval area, wherein the default retrieval area is the screen visible range of the current map, the retrieval areas of the peripheral retrieval are determined by target points and radiuses, the retrieval areas of the geometric retrieval are obtained by framing on the map and can be arbitrarily framed in the interested areas, and the retrieval areas of the urban retrieval are obtained by checking an administrative division selector;
step three, acquiring a retrieval target type and keywords, wherein the retrieval target type is realized through a two-level cascade selector, the retrieval keywords are acquired through character input, and when the keywords are empty, the default selected target type is all POI;
step four, POI retrieval is executed, the current retrieval mode is judged, a relevant method is called to process retrieval parameters, and a service interface of a special data POI retrieval system is called to initiate a query request;
and fifthly, displaying the retrieval result on a POI result display interface, and loading a POI icon on the map.
Further, the specific steps of peripheral retrieval are as follows:
step one, setting peripheral retrieval as a current retrieval mode identifier;
clicking a target point icon on the map, and popping up a retrieval frame near the target point icon, wherein the retrieval frame comprises a common special data type text link, a retrieval input frame and a retrieval button;
selecting a quick retrieval mode, and selecting retrieval according to the data type or keyword retrieval;
and step four, displaying the retrieval result, drawing the cache region by taking the target point as a default center, and checking the relevant emergency resource distribution of the cache region.
Furthermore, the retrieval area of the peripheral retrieval is determined according to a target point and the initial radius value, and the retrieval range can be dynamically adjusted according to the adjusting component, wherein the target point is an existing entity point on the map or an entity point set for any blank position on the map.
Furthermore, in the third step, the retrieval thematic data types can be changed, the thematic data types to be analyzed can be freely selected through the secondary cascade selector, the checking is supported, the first-level classification of the thematic data types comprises emergency guarantee resources, major hazard sources and protection targets, each first-level classification comprises a plurality of secondary classifications, and the distribution conditions of the emergency guarantee resources, the major hazard sources and the protection targets in the buffer area can be respectively analyzed through the selection of the corresponding thematic data types, so that a disposal scheme is formulated in an auxiliary mode.
Further, after the POI is retrieved, a POI result display list is updated, and POI icons are drawn on a map according to longitude and latitude geographic coordinate information of the POI, wherein the POI result display list displays the title, the address, the responsible person, the telephone and the category icon of each POI.
Compared with the prior art, the invention has the beneficial effects that:
the POI retrieval method provided by the invention can freely select the retrieval area and the type of the retrieval data, and only the thematic data meeting the conditions in the area of interest is retrieved and loaded, so that the flexibility and the efficiency of retrieval are greatly improved;
the invention can search and analyze the distribution positions and the quantity of various emergency guarantee materials, major hazard sources, protection targets and the like in various provinces, cities, counties and the like in emergency daily management, identify high risk areas and provide decision basis for making emergency plans; meanwhile, the peripheral retrieval function can quickly provide the special data POI and the distance around the incident place or the rescue place in the emergency burst disposal process, provide data basis for auxiliary decision making, and can meet the special data guarantee requirement under different application scenes of normal state and abnormal state.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present invention. Wherein:
FIG. 1 is an architecture diagram of a special data POI retrieval system oriented to the emergency field according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for searching specialized data POI in the emergency field according to an embodiment of the present invention;
FIG. 3 is a flowchart of peripheral retrieval according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Fig. 1 shows an architecture diagram of a special data POI retrieval system for the emergency field according to an embodiment of the present invention, which includes a resource layer, a data layer, a service layer, a business layer, and an application layer.
The resource layer comprises but is not limited to a government data center, a national emergency platform, a mobile terminal data end and the like, and the mobile terminal data end mainly collects uploaded data on site.
And in the data layer, a distributed file database MongoDB is adopted to build an emergency special database, including but not limited to a geographic information base, a resource database, a major hazard source database and a protection target database.
The business layer comprises a geographic information system and a core business component developed based on the geographic information system, and is used for building a thematic data POI retrieval environment based on the geographic information system;
the core business component mainly comprises business functions of geographic range calculation, POI priority calculation, coordinate mapping conversion, basic primitive drawing, layer management, plotting symbol loading and the like, and the basic geographic information system is based on an open-source Cesium engine and adopts JavaScript writing to realize GIS functions of 2D/3D map rendering, graph drawing, region calculation and the like.
The service layer provides a data service interface for the application layer, and realizes the calling of thematic data retrieval service based on an HTTP (hyper text transport protocol) method by using a service interface of a Java development operation database based on a RESTful architecture;
the service layer includes, but is not limited to, a geometric retrieval service which selects a longitude and latitude coordinate array according to geometric characteristics of a shape, and an administrative division retrieval service which sets administrative parameters of administrative divisions in multiple levels.
The geometric retrieval service comprises a circular area retrieval service, a rectangular area retrieval service and a polygonal area retrieval service, wherein the circular area retrieval service parameters are the radius and longitude and latitude coordinates of the circle center; the rectangular area retrieval service parameter is a diagonal vertex longitude and latitude coordinate array; the polygon area retrieval parameter is a polygon vertex longitude and latitude coordinate array; the administrative division searching parameter is a four-level administrative parameter in a format of 'province, city, county and town'.
The application layer is used for executing POI retrieval, adopts Vue + node. js and other mixed technologies to compile a front end, obtains retrieval parameters through the front end, initiates a query request to a rear end service, and displays a returned retrieval result on a front end list and a map according to the POI priority, and comprises a POI retrieval module and a result display module.
As an embodiment of the present invention, the POI retrieval module issues a query request to the service layer to obtain a POI target satisfying the retrieval parameters, where the retrieval manner includes default retrieval, peripheral retrieval, circular region retrieval, rectangular region retrieval, polygon retrieval, and intra-city retrieval.
The retrieval area of the default retrieval mode is the screen visible range of the current map.
The retrieval area of the peripheral retrieval mode is determined by a target point and a set initial radius value, the target point is determined by clicking a map, or the initial radius value is set for an entity marked on the map, such as a marked rescue place or an entity point set for any blank position on the map, and the size of the radius can be dynamically adjusted by an adjusting component.
The search range of the circular ring area search mode is obtained by selecting circles on the map, and circular rings with any size can be selected in the interested area.
The search range of the rectangular area search mode is obtained by frame selection on a map, and a rectangle with any size can be frame selected in an interested area.
The search area of the polygon search method is obtained by drawing a polygon on a map, and a polygon having an arbitrary shape and size can be drawn in the area of interest.
The retrieval area of the urban retrieval mode is obtained by checking a four-level administrative division selector.
And the result display module is used for displaying the retrieval result on an interface according to the POI priority and loading POI icons on the map, and different types of thematic data POI are displayed in a layer mode in a superposition mode. The POI icons accord with emergency plotting sign specifications, and the types and the number of POIs in the retrieval area can be clearly viewed through different color distinction. And after the retrieval result is returned every time, updating the map POI icon in an incremental updating mode, and checking the detailed attribute information of the currently selected POI by double clicking the POI result display interface or clicking the map POI icon by a mouse.
Fig. 2 shows a flowchart of a topical data POI retrieval method for the emergency field in an embodiment of the present invention, which includes the following steps:
selecting a retrieval mode, including default retrieval, peripheral retrieval, geometric shape retrieval and intra-city retrieval;
step two, acquiring a retrieval area, wherein the default retrieval area is the screen visible range of the current map, the retrieval area of the peripheral retrieval is determined by a target point and a radius, the retrieval area of the geometric retrieval is obtained by framing on the map and can be arbitrarily framed in the interested area, and the retrieval area of the urban retrieval is obtained by checking an administrative division selector;
step three, acquiring a retrieval target type and keywords, wherein the retrieval target type is realized through a two-level cascade selector, the retrieval keywords are acquired through character input, and when the keywords are empty, the default selected target type is all POI;
step four, POI retrieval is executed, the current retrieval mode is judged, a relevant method is called to process retrieval parameters, and a service interface of a special data POI retrieval system is called to initiate a query request;
and fifthly, displaying the retrieval result on a POI result display interface, and loading a POI icon on the map.
As an embodiment of the present invention, the specific steps of searching the topical data POI by using the peripheral search method are as follows:
selecting a retrieval tool and setting a current retrieval mode as a peripheral retrieval mode;
clicking a target point icon on the map, and popping up a retrieval frame near the target point icon, wherein the retrieval frame comprises a common special data type text link, a retrieval input frame and a retrieval button; the common special data types comprise medical resources, refuge places, fire fighting resources, material resources and gas stations;
step three, selecting a quick retrieval mode, selecting retrieval according to the data type or keyword retrieval, directly clicking a text link of the special data type to be checked according to the data type retrieval finger, inputting the keyword to be retrieved in an input box according to the keyword retrieval, and clicking a retrieval button;
and step four, displaying the retrieval result, drawing a cache area by taking the target point as a default center, and checking the distribution of the relevant emergency resources in the cache area.
In the retrieval process, the retrieval thematic data types can be changed, the thematic data types to be analyzed can be freely selected through the two-stage cascade selector, the multiple checking is supported, the first-stage classification of the thematic data types comprises emergency guarantee resources, major hazard sources and protection targets, a plurality of second-stage classifications are included in each first-stage classification, and the distribution conditions of the emergency guarantee resources, the major hazard sources and the protection targets in the buffer area can be respectively analyzed through the selection of the corresponding thematic data types, so that a disposal scheme is formulated in an auxiliary mode.
For example, the emergency guarantee resources can be checked by checking the emergency guarantee resources in the buffer area, at the moment, the POI result display list and the POI icons in the map circular area can be dynamically updated to the material resources, medical resources, refuge places and fire fighting resource information around the accident point, and when the mouse moves to the POI icons, the titles, the responsible persons and the contact calls of the POI can be displayed.
The size of the retrieval area of the peripheral retrieval can be determined according to a target point and a set initial radius value, and the retrieval range can be dynamically adjusted according to the adjusting component, wherein the target point is an existing entity point on the map or an entity point set for any blank position on the map, and the entity point can be an accident point, a danger source or each rescue place. Specifically, the search area defaults to a circular area with a center at a target point and a radius of 3km, the size of the circle is enlarged or reduced by dragging a progress bar or clicking "+", "-" or manually inputting a custom value, the radius adjustment range is from 0km to 20km, the step length is 1m, and the search result is updated in real time.
And after the POI is retrieved, updating a POI result display list and drawing POI icons on a map according to longitude and latitude geographic coordinate information of the POI, wherein the POI result display list displays the title, the address, the responsible person, the telephone and the category icon of each POI. When a mouse is hovered over a certain POI icon on the map, the brief introduction of the POI icon is displayed, and when a certain POI in a POI result display list or the map is clicked, a detailed page is popped up, wherein the detailed page comprises attribute information such as a title, position information, a responsible person, a contact phone and the like.
Fig. 3 illustrates the operation flow of selecting a search target location, drawing a search area, setting search parameters, sending a search service request to result display, drawing icons, and the like by taking a peripheral search operation as an example.
Setting a current retrieval mode, and selecting a peripheral retrieval tool;
clicking a target point icon on a map, judging whether an entity exists, if so, popping up a peripheral retrieval frame, and if not, popping up the peripheral retrieval frame after setting an entity point;
defaulting the data type character link for retrieval, clicking the data type character link, enabling a peripheral retrieval frame to disappear, and drawing a retrieval area circular ring with the radius of three kilometers; or inputting retrieval keywords in a peripheral retrieval frame, and searching for a retrieval area ring with a pop-up radius of three kilometers;
acquiring retrieval parameters, sending a query request to a background, returning a POI retrieval result to the background, updating the content of a POI result display interface and a map drawing icon, finally judging whether the retrieval condition needs to be changed, if so, acquiring the retrieval parameters again, sending the query request to the background, and the like.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a special data POI search system towards emergent field which characterized in that, includes resource layer, data layer, business layer, service layer and application layer, wherein:
the resource layer comprises a government data center, a national emergency platform and a mobile terminal data terminal;
the data layer adopts a distributed file database MongoDB to build an emergency special database which comprises a geographic information database, a resource database, a major hazard source database and a protection target database;
the business layer comprises a geographic information system and a core business component developed based on the geographic information system, and a thematic data POI retrieval environment based on the geographic information system is built;
the service layer is based on RESTful architecture, uses a service interface of a Java development operation database, realizes the calling of thematic data retrieval service based on an HTTP method, and provides a data service interface for the application layer;
and the application layer is used for executing POI retrieval.
2. The POI retrieval system for topical data in the emergency field according to claim 1, wherein the service layer comprises a geometric retrieval service and an administrative division retrieval service, wherein the geometric retrieval service selects a longitude and latitude coordinate array according to geometric characteristics of the shape, and the administrative division retrieval service sets administrative parameters of administrative divisions in multiple levels.
3. The system for searching specialized data POI in the emergency field according to claim 2, wherein the application layer comprises a POI searching module and a result displaying module, wherein:
the POI retrieval module initiates a query request to the service layer to acquire a POI target meeting retrieval parameters, wherein the retrieval mode comprises default retrieval, peripheral retrieval, geometric retrieval and intra-city retrieval;
and the result display module is used for displaying the retrieval result on an interface according to the POI priority and loading POI icons on the map, and different types of thematic data POI are displayed in a layer mode in a superposition mode.
4. A method for searching special data POI facing to emergency field is characterized by comprising the following steps:
selecting a retrieval mode, including default retrieval, peripheral retrieval, geometric shape retrieval and intra-city retrieval;
step two, acquiring a retrieval area, wherein the default retrieval area is the screen visible range of the current map, the retrieval areas of the peripheral retrieval are determined by target points and radiuses, the retrieval areas of the geometric retrieval are obtained by framing on the map and can be arbitrarily framed in the interested areas, and the retrieval areas of the urban retrieval are obtained by checking an administrative division selector;
step three, acquiring a retrieval target type and keywords, wherein the retrieval target type is realized through a two-level cascade selector, the retrieval keywords are acquired through character input, and when the keywords are empty, the default selected target type is all POI;
step four, POI retrieval is executed, the current retrieval mode is judged, a relevant method is called to process retrieval parameters, and a service interface of a special data POI retrieval system is called to initiate a query request;
and fifthly, displaying the retrieval result on a POI result display interface, and loading a POI icon on the map.
5. The method for searching specialized data POI facing to emergency field according to claim 4, wherein the peripheral search comprises the following specific steps:
step one, setting peripheral retrieval as a current retrieval mode identifier;
clicking a target point icon on the map, and popping up a retrieval frame near the target point icon, wherein the retrieval frame comprises a common special data type text link, a retrieval input frame and a retrieval button;
selecting a quick retrieval mode, and selecting retrieval according to the data type or keyword retrieval;
and step four, displaying the retrieval result, drawing the cache region by taking the target point as a default center, and checking the relevant emergency resource distribution of the cache region.
6. The method of claim 5, wherein the search area for searching the periphery is determined according to a target point and an initial radius value, and the search range is dynamically adjusted according to the adjustment component, wherein the target point is an existing entity point on the map or an entity point set for any blank position on the map.
7. The method for searching specialized data POI facing to emergency field according to claim 4,
in the third step, the retrieval thematic data types can be changed, the thematic data types to be analyzed can be freely selected through the secondary cascade selector, and the selection is supported, the first-level classification of the thematic data types comprises emergency guarantee resources, major hazard sources and protection targets, each first-level classification comprises a plurality of second-level classifications, and the distribution conditions of the emergency guarantee resources, the major hazard sources and the protection targets in the buffer area can be respectively analyzed through the selection of the corresponding thematic data types, so that a disposal scheme is formulated in an auxiliary mode.
8. The method for retrieving the special data POI in the emergency field according to claim 4, wherein after the POI is retrieved, a POI result display list is updated, and POI icons are drawn on a map according to longitude and latitude geographic coordinate information of the POI, wherein the POI result display list displays a title, an address, a responsible person, a telephone and a category icon of each POI.
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| CN116401473A (en) * | 2023-06-07 | 2023-07-07 | 上海维智卓新信息科技有限公司 | Evacuation location information recommendation method, electronic device and storage medium |
| CN116401473B (en) * | 2023-06-07 | 2023-08-15 | 上海维智卓新信息科技有限公司 | Evacuation location information recommendation method, electronic device and storage medium |
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