CN106339434A - Temporal and spatial analysis method of national safety production accident - Google Patents
Temporal and spatial analysis method of national safety production accident Download PDFInfo
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Abstract
The invention discloses a temporal and spatial analysis method of a national safety production accident. The temporal and spatial analysis method comprises the following steps: expanding fields of a safety production accident data sheet; reading all safety production accident records one by one, invoking an online address resolution service to obtain a geographic position where the accident happens, and updating values of a field x and a field y of each accident record; based on the starting time and the endgame time, inquiring accident data, circularly reading the inquired accident data, splicing the accident data into a JSON object array dataObject, creating a Baidu map object, creating a heat map overlay by using the dataObject as a data source, and adding the heat map overlay onto a Baidu map for overlaying display. By the temporal and spatial analysis method, spatial information is expanded into a safety production accident database; based on the heat maps of the accident data in a plurality of time intervals, the temporal and spatial change analysis can be conveniently performed on the safety production accidents in different time intervals, so that quick finding of a prone area and a spatial distribution change trend of the accidents can be facilitated, and thus a decision support is provided for safety production and a preventive work.
Description
Technical field
The present invention relates to geographic information system technology, especially a kind of national security production accident space-time analysis method.
Background technology
National security production accident information system management and the important process that analysis is relation national assets and masses'safety, state
National industrial accident can be carried out centralized and unified storage, management and online by family's industrial accident inquiry system
Cloth, facilitates management and the inquiry of industrial accident information.But only store the temporal information of accident, death in accident record
Number and description information, lack the geographical coordinate of place where the accident occurred point it is impossible to carry out from time and two, space dimension to accident
Comprehensive analysis are it is difficult to provide comprehensive decision support for government safety production management department.
Content of the invention
The technical problem to be solved in the present invention is for defect of the prior art, provides a kind of national security to produce thing
Therefore space-time analysis method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of national security production accident space-time analysis side
Method, including industrial accident raw data table, the field of industrial accident raw data table includes id, date, count,
Descrition, wherein id are the unique mark of accident record, the time that date occurs for accident, and count is the death of accident
Number, description is the description of accident；It is characterized in that, it comprises the following steps:
1) extend the field of industrial accident tables of data, for storing the locus of industrial accident；Described expansion
The field of exhibition is field x and field y, and wherein x is the longitude that accident occurs position, and y is the latitude that accident occurs position, its acquiescence
Value is disposed as null；
2) in query safe production accident tables of data, x or y is all records of null, extracts the following words in every record
Section: accident unique mark id and accident describe description；
3) read a step 2) the industrial accident record that inquires, carry out ground to description field contents
Location parses, and obtains the longitude longitude and latitude latitude in the geographical position of this accident record generation；
4) value that this records corresponding field x and field y is updated according to the id of industrial accident record record；
Judge step 3) in the casualty data that inquires whether processed, if processed, proceed to step 5)；If not
Process, gone to step 3 and continue with next accident record；
5) analyze the time started of industrial accident according to need and the end time looks into from industrial accident tables of data
Ask casualty data, extract the following fields in every record: x, y and count；
6) casualty data inquiring is read in circulation, and x, y and count field contents are spliced into a json object array
dataobject；
7) create Baidu map object bmap, show Baidu map；
8) create Baidu thermodynamic chart superimposed layer object heatmap, be added in map cases bmap, will
Dataobject is set to the data source of heatmap, and in Baidu map, Overlapping display industrial accident thermodynamic chart, is used for
The spatial distribution of the industrial accident in sometime interval is analyzed.
By such scheme, methods described also includes step 9): repeated execution of steps 5) to step 8), generate multiple time zones
Interior industrial accident spatial distribution thermodynamic chart, carries out the spatial distribution of multiple time intervals to national security production accident
Comparative analysis.
By such scheme, described step 3) in address resolution specially call the online address resolution clothes that Baidu map provides
Business, parses longitude longitude and the latitude in the geographical position of this accident record generation according to description field contents
latitude.
The beneficial effect comprise that: spatial positional information is expanded to national security production accident data by the present invention
In table, based on the online address resolution service of Baidu map according to accident description information automatically obtain place where the accident occurred point longitude and
Latitude, and using heating power diagram technology, industrial accident is expressed on map, contribute to national industrial accident
Carry out space-time analysis, the prone district of quick analysis accident and changes in spatial distribution trend, provide industrial accident for government
Management and the decision support of prevention aspect.
Brief description
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is to carry out the industrial accident sky as embodiment for the space-time analysis with national security production accident 2005 year
Between be distributed thermodynamic chart；
Fig. 3 is to carry out the safety life as embodiment for the space-time analysis per year with national security production accident 2000-2015
Product accident spatial distribution thermodynamic chart.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
As shown in figure 1, Fig. 1 is the national security production accident space-time analysis method flow diagram that the present invention provides, described side
Method comprises the following steps:
Step 1: the field of industrial accident raw data table (table name is security) includes id, date, count,
Descrition, wherein id are the unique mark of accident record, the time that date occurs for accident, and count is the death of accident
Number, description is the description of accident.In order to realize the space-time analysis of industrial accident, need extension safety in production
The field of casualty data table, for storing the locus of industrial accident, increases field x and field y, and x is that accident occurs
The longitude of position, y is the latitude that accident occurs position, and its default value is disposed as null.Casualty data table structure such as table 1 institute
Show.
Table 1 industrial accident data list structure
Step 2: in query safe production accident tables of data, x or y is the data of null, every record includes accident and uniquely marks
Know (id) and accident description (description).Data query sql sentence is " select id, description from
security where x is null or y is null”
Step 3: read an industrial accident record inquiring, create Baidu's online address analysis object
(bmap.geocoder) the online address solution, being provided by bmap.geocoder.getpoint () interface interchange Baidu map
Analysis service, parses longitude longitude and the latitude in the geographical position of this accident record generation according to description
latitude.
Step 4: update the value of this record field x and field y according to the id of accident record, the sql using when updating the data
Sentence format is " update security set x=114.14364, y=20.25671where id=1 ", the wherein value of x
The longitude longitude in the accident geographical position for obtaining in step 3, y are the latitude in the accident geographical position obtaining in step 3
Latitude, id are the id of the accident record reading in step 3.
Judge whether the casualty data inquiring in step 3 is processed, if processed, goes to step 5；If untreated
Complete, go to step 3 and continue with next accident record.
Step 5: looked into from industrial accident tables of data according to time started begindate and end time enddate
Ask casualty data, field includes x, y and count, and the sql query statement form of use is " select x, y, count from
Security where date >=' 2000-1-1'and date≤' 2000-12-31' ".
Step 6: the casualty data inquiring is read in circulation, is spliced into json object array dataobject.
Its form is as follows:
[{"lng":116.418261,"lat":39.921984,"count":50},
{"lng":116.423332,"lat":39.916532,"count":51}]
Wherein the value of lng is the value of field x of accident record inquiring in step 5, and the value of lat is to inquire about in step 5
The value of field y of the accident record arriving, the value of count is the value of field count of accident record inquiring in step 5；
Step 7: create Baidu map object (bmap.map) bmap, show Baidu map.
Step 8: create Baidu thermodynamic chart superimposed layer object (bmaplib.heatmapoverlay) heatmap, call
The addoverlay method of bmap is added in map cases bmap, and the setdataset method calling heatmap will
Dataobject is set to the data source of heatmap, calls the show method of heatmap Overlapping display peace in Baidu map
Full production accident thermodynamic chart, for being analyzed to the spatial distribution of the industrial accident in sometime interval.
Step 9: repeated execution of steps 5 to step 8, generate the industrial accident spatial distribution heat in multiple time intervals
Try hard to, for space-time analysis are carried out to national security production accident.
Embodiment one:
For the thought of the apparent explanation present invention, below national security production accident space-time analysis method is entered to advance
The explanation of one step, with the national security production accident data instance of 2000-2015, generates the spatial distribution of each annual accident
Thermodynamic chart, the industrial accident between Chinese 2000-2015 carries out space-time analysis, using mysql database purchase accident
Data, using c# language manipulation mysql database.Specifically comprise the following steps that
Step 1: the field of industrial accident raw data table (table name is security) includes id, date, count,
Descrition, wherein id are the unique mark of accident record, the time that date occurs for accident, and count is the death of accident
Number, description is the description of accident.In order to realize the space-time analysis of industrial accident, need extension safety in production
The field of casualty data table, for storing the locus of industrial accident, increases field x and field y, and x is that accident occurs
The longitude of position, y is the latitude that accident occurs position, and its default value is disposed as null.Casualty data table structure such as table 1 institute
Show.
Step 2: create mysqlconnection object conn and connect industrial accident database, call conn's
Open () method is opened database and is connected, and creates mysqlcommand object cmd, calls the executereader () method of cmd
In query safe production accident tables of data, x or y is the data of null, obtains result data collection and accesses object
(mysqldatareader) reader, every record includes accident unique mark (id) and accident description (description).
Data query sql sentence is " select id, description from security where x is null or y is
null”
Step 3: call the read () method of reader object to read an industrial accident record inquiring, including
Id and description, creates Baidu online address analysis object (bmap.geocoder) geo, by the getpoint of geo
The online address resolution service that () interface interchange Baidu map provides, parses the generation of this accident record according to description
The longitude longitude in geographical position and latitude latitude.
Step 4: create mysqlcommand object updatecmd, call the executenonquery () of updatecmd
Method updates the value of this record field x and field y according to the id of accident record, and the sql Sentence format using when updating the data is
" update security set x=114.14364, y=20.25671where id=1 ", the wherein value of x are in step 3
The longitude longitude in the accident geographical position obtaining, y are the latitude latitude in the accident geographical position obtaining in step 3,
Id is the id of the accident record reading in step 3.
Judge whether the casualty data inquiring in step 3 is processed, if processed, goes to step 5；If untreated
Complete, go to step 3 and continue with next accident record.
Step 5: create mysqlcommand object cmdbydate, call the executereader () side of cmdbydate
Method inquires about casualty data, word according to time started begindate and end time enddate from industrial accident tables of data
Section includes x, y and count, obtains result data collection and accesses object (mysqldatareader) readerbydate, use
Sql query statement form be " select x, y, count from security where date >=' 2000-1-1'and
Date≤' 2000-12-31' ", the sql query statement in 2000-2015 year is as shown in table 2.
Table 2 2000-2015 year accident query statement
Step 6: the read () method of recursive call readerbydate object reads the casualty data inquiring one by one, will
It is spliced into json object array dataobject.Its form is as follows:
[{"lng":116.418261,"lat":39.921984,"count":50},
{"lng":116.423332,"lat":39.916532,"count":51}]
Wherein the value of lng is the value of field x of accident record inquiring in step 5, and the value of lat is to inquire about in step 5
The value of field y of the accident record arriving, the value of count is the value of field count of accident record inquiring in step 5
Step 7: create Baidu map object (bmap.map) bmap, call the centerandzoom () method of bmap to show
Show Baidu map.
Step 8: create Baidu thermodynamic chart superimposed layer object (bmaplib.heatmapoverlay) heatmap, call
The addoverlay method of bmap is added in map cases bmap, and the setdataset method calling heatmap will
Dataobject is set to the data source of heatmap, calls the show method of heatmap Overlapping display peace in Baidu map
Full production accident thermodynamic chart, for being analyzed to the spatial distribution of the industrial accident in sometime interval.As generated
Industrial accident spatial distribution thermodynamic chart in 2005 year intervals, as shown in Figure 2；
Step 9: repeated execution of steps 5 to step 8, generate the safety in production in 2000-2015 interval in every year respectively
Accident spatial distribution thermodynamic chart, for carrying out space-time analysis to national security production accident.Result is as shown in figure 3, by Fig. 3 pair
2000-2015 national security production accident carries out space-time analysis, can obtain following result: 2000-2002, safety in production
Accident is in obvious ascendant trend, and the spatial dimension of place where the accident occurred point gradually expands, and gradually expands to from central China, southwest
Northeast China, east and southeastern coast region.2003-2007 industrial accident is related to area of space and remains high always,
The wherein more major accident integrated distribution of death toll is in Shanxi, Hebei, Henan, Chongqing and Guizhou.From the beginning of 2008, state
Family's industrial accident assumes the trend of being gradually reduced, and occurs the area of space of industrial accident to be gradually reduced, death toll is relatively
Many major accidents gradually decrease.Cut-off 2015, industrial accident spatial distribution region has tapered to city-level administrative region,
It is concentrated mainly on the peri-urbans such as Harbin, Xi'an, Zhengzhou, Nanjing, Changsha, Guangzhou.
Using the national security production accident space-time analysis method of present invention design, spatial information can be expanded to safety
In production accident database, industrial accident data is made to be provided simultaneously with time and spatial character, visual using Baidu's thermodynamic chart
Industrial accident data in sometime interval can be carried out space expression by change technology, based in multiple time intervals
Casualty data thermodynamic chart, just quickly and easily can carry out spatio-temporal change analysis to industrial accident in different time interval,
Contribute to the quickly prone district of discovery accident and changes in spatial distribution trend, be government safety production accident management and prevention work
Make to provide decision support.
It should be appreciated that for those of ordinary skills, can be improved according to the above description or be converted,
And all these modifications and variations all should belong to the protection domain of claims of the present invention.
Claims (3)
1. a kind of national security production accident space-time analysis method, including industrial accident raw data table, thing of keeping the safety in production
Therefore the field of raw data table includes id, date, count, descrition, wherein id is the unique mark of accident record,
The time that date occurs for accident, count is the death toll of accident, and description is the description of accident；Its feature exists
In it comprises the following steps:
1) extend the field of industrial accident tables of data, for storing the locus of industrial accident；Described extension
Field is field x and field y, and wherein x is the longitude that accident occurs position, and y is the latitude that accident occurs position, and its default value is equal
It is set to null；
2) in query safe production accident tables of data, x or y is all records of null, the following fields in every record of extraction:
Accident unique mark id and accident describe description；
3) read a step 2) description field contents are entered row address solution by the industrial accident record that inquires
Analysis, obtains the longitude longitude and latitude latitude in the geographical position of this accident record generation；
4) value that this records corresponding field x and field y is updated according to the id of industrial accident record record；
Judge whether the casualty data inquiring in step 3) is processed, if processed, proceeds to step 5)；If untreated
Complete, go to step 3 and continue with next accident record；
5) analyze the time started of industrial accident according to need and the end time inquires about thing from industrial accident tables of data
Therefore data, extract the following fields in every record: x, y and count；
6) casualty data inquiring is read in circulation, and x, y and count field contents are spliced into a json object array
dataobject；
7) create Baidu map object bmap, show Baidu map；
8) create Baidu thermodynamic chart superimposed layer object heatmap, be added in map cases bmap, dataobject is set
It is set to the data source of heatmap, Overlapping display industrial accident thermodynamic chart in Baidu map, for sometime area
The spatial distribution of interior industrial accident is analyzed.
2. national security production accident space-time analysis method according to claim 1 is it is characterised in that methods described is also wrapped
Include step 9): repeated execution of steps 5) to step 8), generate the industrial accident spatial distribution heating power in multiple time intervals
Figure, carries out the spatial distribution comparative analysis of multiple time intervals to national security production accident.
3. national security production accident space-time analysis method according to claim 1 is it is characterised in that in described step 3)
The online address resolution service that Baidu map provides specially is called in address resolution, is parsed according to description field contents
The longitude longitude and latitude latitude in the geographical position that this accident record occurs.
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20170118 |