CN102169509A - Method for storing metro comprehensive pipeline data based on relational database and XML file - Google Patents
Method for storing metro comprehensive pipeline data based on relational database and XML file Download PDFInfo
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Abstract
The invention relates to a method for storing metro comprehensive pipeline data based on a relational database and an extensive markup language (XML) file. A great variety of metro comprehensive pipeline information, complicated spatial topological relations and a large amount of total information content are realized, and a process for effectively storing extracted metro comprehensive pipeline data is a key for effectively managing metro comprehensive pipelines. In the method, the metro comprehensive pipeline information is stored in the storage form of classifying the information in advance and then layering the information, pipeline spatial information with the highest operation amount is stored by the XML file, pipeline attribute data which is required by business logic processing to the greatest extent is stored by the relational database, and data required by pipeline three-dimensional digitization is formed by pipeline attribute information and the pipeline spatial information. By the method, the relation among information data is more definite, respective advantages of the relational database and the XML file in the aspect of data storage are exerted, and the processing efficiency of the data is improved; and by quick business logic processing and spatial data computation, the method is suitable for a data storage process for the metro comprehensive pipelines in a visible visualization management mode.
Description
Technical field
The invention belongs to the comprehensive pipeline information data of subway administrative skill field, be specifically related to the comprehensive pipeline data storage method of a kind of subway based on relational database and XML file.
Background technology
Development along with urban rail transit in China, subway construction enters high-speed development period, the comprehensive pipeline of subway is as the important component part of ground facilities, be one of most important facility that influences the normal operation of subway, how it effectively being managed is the major issue that subway construction unit and unit of operation face.At present, the comprehensive pipeline information category of subway information is various, relates to tens of kinds of communication line, draft tube liner, fire-fighting, water-supply lines etc., and the pipeline of hundreds of difference in functionality, and arbitrary kind pipeline comprises the pipeline of multiple different size or model again; The spatial topotaxy complexity, owing to the restriction of structure, the locus of comprehensive pipeline is intricate in the subway station, and the spatial relation of this complexity causes very big inconvenience for design, construction, maintenance; Comprehensive pipeline overall information amount is huge, the pipeline of diverse location has different spatial informations, and dissimilar relation, have different base attribute information and business information, so the comprehensive pipeline system of subway has mass data, and are the most important parts of the comprehensive pipeline of subway to the management of these mass datas.
How effectively storage to have extracted the comprehensive pipeline data of the subway that finishes are keys that the comprehensive pipeline of subway is effectively managed, especially in the comprehensive pipeline management pattern of three-dimensional visualization, the reasonable storage of pipeline data is feasible with the practical important steps of this pattern.
Summary of the invention
The purpose of this invention is to provide a kind ofly, the data storage scheme of pipeline information is provided for the management of the visible image of the comprehensive pipeline of subway towards the comprehensive pipeline data storage method of the digitized subway of the comprehensive pipeline data three-dimensional of subway based on relational database and XML file.
The technical solution adopted in the present invention is:
Based on the comprehensive pipeline data storage method of the subway of relational database and XML file, it is characterized in that: realize by following steps:
Step 1: the comprehensive pipeline information of subway is divided into the pipeline category information and line sections information is two-layer, category information is related by class ID with segment information; Again pipeline category information and line sections information are divided into attribute information, spatial information and lay information, this three category information is by section ID association; The pipeline category information only comprises attribute information, and segment information then not only comprises attribute information, also comprises spatial information and lays information;
Step 2: the storage characteristics of marriage relation database and XML file, attribute information are by the relation data library storage, spatial information with lay information by the XML file storage;
Step 3:, in relational database, design the attribute information in two database table storage pipeline category informations and the segment information respectively for reducing data redudancy;
Step 4: the spatial information of pipeline to embodying, uses XML file storage Ying Yu with in one deck by coordinate; Related for the spatial information of pipeline and pipeline attribute information are carried out, it is an attribute field of spatial information that line sections ID is set, and is in in one deck with coordinate fields;
Step 5: have identical section ID owing to belong to, so with the spatial information of every pipeline and lay information stores in same XML file with the spatial information of pipe string and the information of laying.
In the described step 1, class ID is the unique ID of pipeline type number; Section ID is the unique ID of line sections number.
In the described step 1, attribute information vial line comprises as the concrete characteristic that operational outfit had: pipeline title, pipeline type, specification, description of use, the unit of laying, lay date, term of life, remark information;
Described spatial information refers to that the three-dimensional coordinate of every depot siding in the three dimensional space coordinate system that determines is to information and the required data of pipeline three-dimensional modeling, pipeline head X coordinate, Y coordinate and Z coordinate are specifically arranged, end of pipe X coordinate, Y coordinate and Z coordinate, the Gao Yukuan of square opening pipeline port, round mouth pipeline port radius;
Described the lay information of information vial line in the practice of construction process of laying comprises that pipeline begins to lay the date and expection finishes to lay the date, and actual current actual laid length number percent.
In the described step 3, the attribute information of pipeline class is the total information of a class pipeline, comprises type, material, tenure of use, maintenance period;
In the described step 3, the attribute information of line sections is the peculiar information of pipe string, comprises pipeline title, type, the unit of laying, lays date and remark information.
In the described step 4, spatial information is not only right by coordinate, be initial X coordinate, initial Y coordinate, initial Z coordinate, terminal point X coordinate, terminal point Y coordinate and terminal point Z coordinate, these six attribute fields embody, for the visible image modeling required, spatial information has also comprised the form of expression information of pipeline, i.e. the Gao Yukuan of square opening pipeline port, round mouth pipeline port radius.
The present invention has the following advantages:
The present invention stores the comprehensive pipeline information of subway by the file layout of classification back layering earlier, and the relation between the data is clear and definite, makes things convenient for the access of data; With the pipeline spatial information of operand maximum by the XML file storage, the pipeline attribute data that business logic processing needs most is by the relation data library storage, make relational database and XML file aspect data access, bring into play advantage separately, improved overall data-handling efficiency; The attribute information of pipeline and spatial information have constituted the required data of pipeline three-dimensional digital, and the calculating of business logic processing and spatial data makes this method be suitable for the data storage procedure of the comprehensive pipeline visible image of subway management mode fast.
Description of drawings
Fig. 1 is a flow chart of steps of the present invention.
Fig. 2 is data hierarchy and sort module figure.
Fig. 3 is data qualification memory module figure.
Fig. 4 is a relational database category information data organization pattern.
Fig. 5 is a relational database segment information data organization pattern.
Fig. 6 is an XML file structure synoptic diagram.
Fig. 7 is spatial information data structure diagram and synoptic diagram.
Fig. 8 is for laying information data structure figure and synoptic diagram.
Fig. 9 is the comprehensive pipeline instance graph of embodiment.
Figure 10 is the comprehensive pipeline category information of embodiment database instance figure.
Figure 11 is an embodiment water pipe segment information database table instance graph.
Figure 12 is for embodiment fresh wind tube spatial information and lay the structure information storage instance graph.
Embodiment
The present invention will be described in detail below in conjunction with embodiment.
Relevant database is very ripe at present data storage instrument, and master datas such as the comprehensive pipeline spatial information of subway, attribute information and business information adopt system R to have remarkable advantage.Easy to operate, be connected user friendly calling and operating to data with the backstage master data by application program; Be easy to safeguard that the integrity constraint of relational model comprises entity integrity, referential integrity and User Defined integrality, greatly reduces the redundancy of data and the inconsistency of data; Are convenient to data access, provide, make things convenient for the visit of user, and data are random access that not only access efficiency height, and dirigibility is stronger to data such as objects such as storing process, view and triggers; Safer, distribution and encryption measures by authority make database that higher security be arranged.
But a shortcoming of relational database is that the data access process is slower, can have a strong impact on computing velocity in the computation process of magnanimity.Yet the XML file has the characteristics of quick access, adopts the data acess method of XML file simultaneously, can remedy this shortcoming of relational database.
XML is a kind of extend markup language, is used for transmitting and the storage data, and it has the clear and definite tree structure of level, and has good form, is convenient to brief analysis, and simple data are fit to deal with relationship; Its data are stored with plain text format, are a kind of data storage methods that is independent of software and hardware, can cross-platform swap data, and by different program access; Its data read is very convenient, also has huge memory space, because of XML is a text-only file, can be used for storing mass data, and the usage flag data of description, can conveniently read data; But the XML text is a sequential search, is difficult for carrying out business logic processing, must all search for one time to all nodes of front and just can find obtained node.
In conjunction with the background of the fast development of the comprehensive pipeline three-dimensional digital of subway administrative skill and the characteristics of relational database and XML file, needs according to the concrete management process of the comprehensive pipeline of subway the present invention proposes based on the comprehensive pipeline data storage method of the subway of relational database and XML file.
As shown in Figure 1, the concrete steps of the comprehensive pipeline data storage method of subway based on relational database and XML file involved in the present invention are:
Step 1: data hierarchy and classification.
As shown in Figure 2, the comprehensive pipeline information of subway is divided into the pipeline category information and line sections information is two-layer, category information is related by class ID with segment information, and class ID is the unique ID of pipeline type number.By the class ID in the segment information, certain pipe string can get up with the associating information of affiliated type pipeline.
On the basis of layering, pipeline category information and line sections information are divided into three major types information again: attribute information, spatial information and lay information.Attribute information vial line comprises as the concrete characteristic that operational outfit had: pipeline title, pipeline type, specification, description of use, the unit of laying, lay date, term of life, remark information etc.Spatial information refers to that the three-dimensional coordinate of every depot siding in the three dimensional space coordinate system that determines is to information and the required data of pipeline three-dimensional modeling, pipeline head X coordinate, Y coordinate and Z coordinate are specifically arranged, end of pipe X coordinate, Y coordinate and Z coordinate, the Gao Yukuan of square opening pipeline port, round mouth pipeline port radius etc.Lay the lay information of information vial line in the practice of construction process, comprise that pipeline begins to lay the date and expection finishes to lay the date, and actual current actual laid length number percent.
The pipeline category information only comprises attribute information, and segment information then not only comprises attribute information, also comprises spatial information and lays information.This three category information is by section ID association, and section ID is the unique ID of line sections number.By section ID with attribute information, the spatial information of certain depot siding and lay associating information together.
Step 2: data qualification storage.
As shown in Figure 3, comprehensive pipeline information forms the three major types data by layering and classification back, be attribute information, spatial information and lay information, characteristics according to different types of information, and the storage characteristics of marriage relation database and XML file, attribute information is by the relation data library storage, spatial information with lay information by the XML file storage.
Step 3: attribute information is carried out data organization.
Pipeline category information and segment information all contain attribute information, and attribute information is by the relation data library storage.The attribute information of pipeline class is the total information of a class pipeline, comprises type, material, tenure of use, maintenance period etc.; The attribute information of line sections is the peculiar information of pipe string, comprises pipeline title, type, the unit of laying, lays date and remark information etc.For reducing data redudancy, in relational database, design the attribute information in two database table storage pipeline category informations and the segment information respectively.
The data organization pattern of the attribute information in the category information as shown in Figure 4, the class ID that shaping wherein is set is a major key, is used for a certain class pipeline of unique identification record.Reserved field is stayed by the category information attribute outside above-mentioned, and the user can determine whether leave and take according to actual needs.
Line sections is the main object of the comprehensive pipeline management of subway, relate to a large amount of service logics, it simultaneously also is the general data object that carries out visible image modeling and visible image management according to the comprehensive pipeline data message of subway, so the digital information that relates to magnanimity is the emphasis of the tissue of the line sections information comprehensive pipeline data storage that is subway.In the method proposed by the invention to the enterprise schema of the attribute information in the line sections information as shown in Figure 5, the section ID that shaping wherein is set is a major key, be used for unique identification pipe string record, pipeline class ID is set to external key, make things convenient for the related of line sections information and category information, reserved field is similarly above-mentioned segment information attribute in addition and stays, and the user can determine whether leave and take according to actual needs.
Step 4: spatial information is carried out data organization.
The hierarchical structure of XML file as shown in Figure 6.The spatial information of pipeline by a pair of coordinate to embodying, this coordinate is to comprising initial X coordinate, initial Y coordinate, initial Z coordinate, terminal point X coordinate, terminal point Y coordinate and terminal point Z coordinate, these six attribute fields are coordination, use XML file storage Ying Yu with in one deck.The spatial information of not only paying close attention to pipeline when the visible image modeling is also paid close attention to the form of expression of pipeline simultaneously, so except that six volume coordinate attribute fields, also comprise the information of rendering pipeline model in the spatial information, as the height and width of square tube port, the perhaps radius of pipe port.
Related for the spatial information of pipeline and pipeline attribute information are carried out, it is an attribute field of spatial information that line sections ID is set, and is in in one deck with coordinate fields etc.The storage organization of the pipeline spatial information of different port as shown in Figure 7.
Step 5: the information of laying is carried out data organization.
Pipeline during laying also has its specific information of laying except having to lay all information of the pipeline that finishes, and the information of laying is the peculiar attribute of pipeline that is in during laying.The pipeline that is in the phase of laying also is an important part in the comprehensive pipeline management of subway, so the present invention has specially proposed storage scheme for the information of laying of the pipeline during laying.
As previously mentioned, lay information by the XML file storage.The information of laying mainly contains and initially lays the date, stops laying date and the actual composition such as number percent that lays, and the user can increase or revise these attribute fields according to actual needs.Concrete storage organization as shown in Figure 8.Has identical section ID owing to belong to, so conveniently can and lay information stores in same XML file with the spatial information of every pipeline in order to read with the spatial information of pipe string and the information of laying.
Below be the specific embodiment of the comprehensive pipeline data storage method of subway based on relational database and XML file involved in the present invention:
With airduct and the comprehensive pipeline of water pipe two classes in No. two line library municipal stations of Xi'an subway is the example explanation, airduct only contains fresh wind tube and two kinds of pipelines of exhaust duct, water pipe only has a kind of pipeline of drainpipe, wherein fresh wind tube, exhaust duct and drainpipe are by two sections formations, and fresh wind tube has laid for one section and has finished, the other end is also in the phase of laying, and it lays number percent is 50%.Data storage procedure is as follows:
Step 1: at first on-the-spot investigation is carried out at the library municipal station, and counted contained pipeline under airducts all in this station and the water pipe comprehensive pipeline type of this two class and the every class pipeline in conjunction with the AutoCAD drawing, and the topology situation of every kind of pipeline, as shown in Figure 9.
Step 2: according to Fig. 2, information layered to airduct and the comprehensive pipeline of water pipe two classes, pipeline category information layer comprises the category information of airduct and the comprehensive pipeline of this two class of water pipe, and line sections information comprises each segment information of fresh wind tube, exhaust duct, drainpipe.On the basis of layering, all data are divided into attribute information, spatial information and lay information.
Step 3: the category information of airduct and water pipe is stored in the relation database table, and this table has only been used storage pipeline category information, as shown in figure 10.Drainpipe attribute information in exhaust duct in the airduct, fresh wind tube, the water pipe is stored in another relation database table, the base attribute information that this table only is used for storing various pipelines, as shown in figure 11.
Step 4: the spatial information of fresh wind tube, exhaust duct, drainpipe and the information of laying are stored in respectively in 3 XML files, stored in each XML file in should the correspondence pipeline all section spatial information with lay information.In the XML file of fresh wind tube space information with lay message structure as shown in figure 12.
Claims (5)
1. based on the comprehensive pipeline data storage method of the subway of relational database and XML file, it is characterized in that: realize by following steps:
Step 1: the comprehensive pipeline information of subway is divided into the pipeline category information and line sections information is two-layer, category information is related by class ID with segment information; Again pipeline category information and line sections information are divided into attribute information, spatial information and lay information, this three category information is by section ID association; The pipeline category information only comprises attribute information, and segment information then not only comprises attribute information, also comprises spatial information and lays information;
Step 2: the storage characteristics of marriage relation database and XML file, attribute information are by the relation data library storage, spatial information with lay information by the XML file storage;
Step 3:, in relational database, design the attribute information in two database table storage pipeline category informations and the segment information respectively for reducing data redudancy;
Step 4: the spatial information of pipeline to embodying, uses XML file storage Ying Yu with in one deck by coordinate; Related for the spatial information of pipeline and pipeline attribute information are carried out, it is an attribute field of spatial information that line sections ID is set, and is in in one deck with coordinate fields;
Step 5: have identical section ID owing to belong to, so with the spatial information of every pipeline and lay information stores in same XML file with the spatial information of pipe string and the information of laying.
2. the comprehensive pipeline data storage method of the subway based on relational database and XML file according to claim 1 is characterized in that:
In the described step 1, class ID is the unique ID of pipeline type number; Section ID is the unique ID of line sections number.
3. the comprehensive pipeline data storage method of the subway based on relational database and XML file according to claim 2 is characterized in that:
In the described step 1, attribute information vial line comprises as the concrete characteristic that operational outfit had: pipeline title, pipeline type, specification, description of use, the unit of laying, lay date, term of life, remark information;
Described spatial information refers to that the three-dimensional coordinate of every depot siding in the three dimensional space coordinate system that determines is to information and the required data of pipeline three-dimensional modeling, pipeline head X coordinate, Y coordinate and Z coordinate are specifically arranged, end of pipe X coordinate, Y coordinate and Z coordinate, the Gao Yukuan of square opening pipeline port, round mouth pipeline port radius;
Described the lay information of information vial line in the practice of construction process of laying comprises that pipeline begins to lay the date and expection finishes to lay the date, and actual current actual laid length number percent.
4. the comprehensive pipeline data storage method of the subway based on relational database and XML file according to claim 3 is characterized in that:
In the described step 3, the attribute information of pipeline class is the total information of a class pipeline, comprises type, material, tenure of use, maintenance period;
In the described step 3, the attribute information of line sections is the peculiar information of pipe string, comprises pipeline title, type, the unit of laying, lays date and remark information.
5. the comprehensive pipeline data storage method of the subway based on relational database and XML file according to claim 4 is characterized in that:
In the described step 4, spatial information is not only right by coordinate, be initial X coordinate, initial Y coordinate, initial Z coordinate, terminal point X coordinate, terminal point Y coordinate and terminal point Z coordinate, these six attribute fields embody, for the visible image modeling required, spatial information has also comprised the form of expression information of pipeline, i.e. the Gao Yukuan of square opening pipeline port, round mouth pipeline port radius.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104657443A (en) * | 2015-02-04 | 2015-05-27 | 国家电网公司 | XML (extensive markup language) native database-based hybrid access method for power network data model |
| CN106600468A (en) * | 2015-10-20 | 2017-04-26 | 星际空间（天津）科技发展有限公司 | Geographic-information-based comprehensive pipeline data two-dimensional and three-dimensional integrated organization method |
| CN110782973A (en) * | 2019-10-29 | 2020-02-11 | 京东方科技集团股份有限公司 | Medical image information grading storage method and device, computer equipment and medium |
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