CN102799714A - Method for extracting data of integrated pipeline of metro based on Auto computer-aided design (CAD) drawing - Google Patents
Method for extracting data of integrated pipeline of metro based on Auto computer-aided design (CAD) drawing Download PDFInfo
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Abstract
The invention discloses a method for extracting data of an integrated pipeline of a metro based on an Auto computer-aided design (CAD) drawing. The method is characterized by comprising the following steps of: selecting the Auto CAD drawing as a data source; selecting the origin 0 of coordinates; performing unified processing on the selected drawing in a coordinate system; and extracting and storing the data. By the method, the attribute information and the spatial information of the integrated pipeline of the metro and the information used when the pipeline is rendered in a three-dimensional scene can be acquired from the Auto CAD drawing, so that reliable data support is provided for a three-dimensional visualized management system of the integrated pipeline of the metro; the problem that the extracted data are not in accordance with a primitive in the prior art is avoided; and moreover, data cannot be lost because of the non-recognition of a machine; and therefore, the extracted data has integrality, and the operation of data is facilitated, the mode is intuitive and the operation is simple and easy.
Description
Technical field
The invention belongs to computer application field, relate to a kind of towards the comprehensive pipeline AutoCAD of the required subway of three-dimension visible sysem drawing data extraction method.
Background technology
In recent years, along with the development of Chinese national economy and improving constantly of living standards of the people, the traffic of big and medium-sized cities is day by day nervous, and road traffic condition constantly worsens.People recognize that progressively having only development is that key large conveying quantity rapid transit system could solve the nervous problem of urban passenger traffic with the sub..And the design of comprehensive pipeline is particularly important in design, construction and the later stage operation maintenance process of subway station.Therefore the demand to the comprehensive pipeline information management of subway also just more seems urgent.
At present; Also do not have a kind of fairly perfect information management system to the comprehensive pipeline of subway, this has brought very burden with regard to giving operation maintenance in the future, waits to keep in repair or change the pipeline that moves if the maintainer need find; Just must find the last construction drawing of the comprehensive pipeline of corresponding subway earlier; Yet the maintenance personal might only find the approximate location of waiting to keep in repair line sections, and can not accurately navigate to position to be keeped in repair, expansion blanket type investigation that afterwards just can only be artificial; This has just wasted great amount of manpower and material resources, and then has increased the spending of operation maintenance.
For ease of the operation maintenance of the comprehensive pipeline of subway in the future; Must have a kind of more intuitively, the more vivid form of expression describes the comprehensive pipeline of subway and pipeline in the locus of subway station, so the comprehensive pipeline information management system of a kind of three-dimensional visualization is arisen at the historic moment.
The management object of the comprehensive pipeline information management system of three-dimensional visualization is pipeline and auxiliary device thereof; Therefore the attribute information of pipeline and spatial information and three-dimension visible sysem carry out pipeline when playing up required information be necessary for the True Data among the AutoCAD figure, the data extraction method of main flow is to be directed against the full automatic data extraction method that the DXF file carries out at present.Carry out brief account in the face of the DXF file down.
DXF is the AutoCAD document format data that is used for carrying out between AutoCAD and other software AutoCAD exchanges data of autodesk, inc.'s exploitation.
A complete DXF file generally is made up of four sections (SECTION) and an end-of-file.Each section is begun by delegation's group code 0 and the character string SECTION of delegation, and then is the character string (for example HEADER) of a group code 2 and a line display name section.The end of section is by the character string ENDSEC of delegation's group code 0 and this section of line display end.Content in these sections is made up of object or pel.And these objects or pel are made up of the group code and the class value of their attributes of sign.Whole file finishes with delegation's group code 0 and the EOF of delegation.What below list is the information that comprises in section name and the section of each section:
(1) HEADER section.This section comprises the essential information relevant with this graphic file, and it is made up of various settings and many system variables in an AutoCAD version database this shop, when deposit.Each parameter comprises-individual variable name and class value thereof.
(2) TABLES section.This section comprises the definition of following symbol table: APPID (application program identification table), BLOCK-RECORD (piece reference list), DIMSTYLE (dimension style table), LAYER (figure layer table), LTYPE (line style table), STYLE (text style table), UCS (user coordinate system table), VIEW (view table) and VPORT (viewport allocation list).The list item number of each table is variable.
(3) BLOCKS section.This section comprises all pieces that in AutoCAD, define, and comprises the piece definition and forms the graph primitive that each piece is quoted in the figure.
(4) ENTITIES section.This section comprises all Drawing Objects that occur in the figure.
Just because of the DXF file is a kind of AutoCAD document format data of data interaction; Its data store organisation is the format structure; Can know the implication of its each segment data from top brief introduction; But because the difference of comprehensive pipeline design drawing personnel's design level, personal experience and careful degree; The drawing that designs can not strict be followed same standard, so the data that extract just can not be corresponding with the pel among the figure, accurate information can't be provided for the maintenance of the comprehensive pipeline of subway.The data that in three-dimension visible sysem, extract the like this maintenance of iron pipe line over the ground are nonsensical.
Summary of the invention
The purpose of this invention is to provide the comprehensive pipeline data extraction method of a kind of subway, have the problem not corresponding, for the maintenance of the comprehensive pipeline of subway provides accurate information with picture in picture unit to solve the data that prior art extracts based on the AutoCAD drawing.
The objective of the invention is to realize like this; Based on the comprehensive pipeline data extraction method of the subway of AutoCAD drawing; Choose the AutoCAD drawing as data source, 0 on selected coordinate also carries out the unitized processing of coordinate system with selected drawing, extracts data and storage then.
After selected drawing being carried out the unitized processing of coordinate system; The comprehensive pipeline of subway is classified, then, category fetch pipeline data; The similar pipeline data of extracting are temporary in same EXCEL table, import the three-dimensional pipeline emulation management platform that the later stage makes up in batches.
0 on said selected coordinate is as X, Y coordinate system 0 point with the summit, the concrete structure lower left corner in the horizontal cross-section drawing; Promptly this point coordinate is (0; 0); With this subway station lowermost layer as basic unit, bottom longitudinal profile drawing acceptance of the bid is designated as 0.000 surface level as the Z axle 0 point, then 0 of the three-dimensional coordinate of whole subway station is X, Y coordinate 0 point on this plane.
The present invention has following beneficial effect:
1, the present invention can extract the information of using when comprehensive pipeline attribute information of subway and spatial information and pipeline are played up in three-dimensional scenic from AutoCAD figure; Can be the comprehensive pipeline three-dimensional visualization of subway management system reliable data support is provided; Overcome prior art owing to have the data of extraction and the not corresponding problem of pel among the figure, therefore the drawback of accurate information can't be provided for the maintenance of the comprehensive pipeline of subway.
2. the present invention compares the data extract of DXF form drawing with traditional approach, and the present invention adopts human intervention to make the data of extracting have more integrality, can be because of machine nonrecognition obliterated data.
3. the data organizational structure of the present invention's extraction is clear, clear and definite, is convenient to the operation (increase, delete, look into, change) of later stage to data.
4. attribute information and the spatial information of the comprehensive pipeline that extracts by the present invention and when playing up the information such as color of use can use in the exploitation of follow-up three-dimension visible sysem; And it is simple to operate easy; The data extract of DXF form drawing is compared more directly perceived, the operation of being more convenient for of the present invention with traditional approach.
Description of drawings
Fig. 1 is a process flow diagram of the present invention;
Fig. 2 is provided with synoptic diagram for 0 on coordinate of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Based on the comprehensive pipeline data extraction method of the subway of AutoCAD drawing, its process flow diagram is referring to Fig. 1, comprises choosing steps such as drawing, selected 0 point coordinate, line classification, data extract and data are temporary.
Concrete steps are following:
Step 1, choose drawing
Choosing drawing is the horizontal sectional drawing of from a cover AutoCAD drawing, selecting recent renewal, and the check data integrality.
Have drawings such as front cover, list of drawings, legend in the one cover AutoCAD drawing, it is screened most important, the drawing of selecting to show recent renewal in the list of drawings is as data source object, and guarantees that drawing is complete.Wherein the horizontal cross-section drawing is particularly important, and they are as main Data Source, and the longitudinal profile drawing is auxiliary as interpreting blueprints.
Step 2, selected coordinate 0 point
Selected 0 purpose of coordinate is all horizontal cross-section drawings to be carried out the unitized processing of coordinate system.
Coordinate in the AutoCAD drawing is a reference coordinate, does not have unified standard, and all drawings in the cover AutoCAD drawing are not that coordinate is corresponding, and promptly every figure has the coordinate of oneself regular.The spatial data that directly extracts does not have the coordinate unitarity.Therefore, needing that every horizontal cross-section drawing is done unified coordinate handles.
The comprehensive pipeline drawing of subway is complicated, pipeline is crisscross, is that information is built in wherein room more intuitively.And each room information of founding a capital of opening the horizontal cross-section drawing is corresponding in a whole set of drawing, and especially concrete structure (reinforced concrete structure) information of subway periphery is simple and clear especially.So it is optimal selection that the concrete structure is carried out the coordinate alignment as a reference.According to being accustomed to the summit, the concrete structure lower left corner in the horizontal cross-section drawing as X, Y coordinate system 0 point; Promptly this point coordinate is (0; 0); With this subway station lowermost layer as basic unit, bottom longitudinal profile drawing acceptance of the bid is designated as 0.000 surface level as the Z axle 0 point, then 0 of the three-dimensional coordinate of whole subway station is X, Y coordinate 0 point on this plane.As shown in Figure 2.
Operation in AutoCAD software is; Open " moving " → selected state hurdle " Object Snap " button under drawing → Ctrl+A (full choosing) → click " modification " menu; Move to selected coordinate 0 position with mouse this moment; Software can automatically be caught intersection point and also the little square frame of khaki occurred, and this moment, left button was clicked, and rolling mouse is to absolute 0 and to click left button definite of software set; The perhaps rolling mouse and the distance that will move with keyboard input, left button is clicked definite then.
Step 3, line classification
See table 1, pipeline is numerous and complicated various in the comprehensive pipeline drawing of subway, and it is intricate to walk, and the extraction of must classifying during extraction so both can improve extraction efficiency, again can the classification and storage pipeline and guarantee later easy and simple to handle.
General; Airduct is one type that in the comprehensive pipeline construction process of subway each side is had the greatest impact; Because its is bulky; Take up space too much, construction infection is very big, by the purposes difference with its be divided into air-conditioning send be in charge of, air-conditioning backwind tube, air-conditioning exhaust duct, fresh wind tube, exhaust duct, smoke exhaust pipe or the like.
Steel pipe be one type with the pipeline general name of steel construction pipeline as different purposes.Mainly comprise two big types of refrigerator pipes, water supply and drainage pipes.Refrigerator pipes comprises chilled water feed pipe, chilled water return pipe, cooling water supply pipe, CWR, air conditioner condensation water pipe, make-up pipe, run-down pipe or the like.The water supply and drainage pipe comprises to be produced and domestic water pipe, drainpipe, sewer, hydrant feed pipe or the like.
Cable testing bridge is the full name that has the rigid structure system of connecting airtight carrying cable by formations such as the straight-line segment of pallet or ladder, curved logical, assembly and trailing arm (arm-type support), suspension brackets.The present invention is divided into high-tension cable crane span structure, low-voltage cable crane span structure with it.
The light current wire casing mainly is divided into bus duct, EMCS system wire casing, communication wire casing, shield door wire casing etc.
More than classification is not to all subway stations, because each subway station has the comprehensive pipeline design characteristic of oneself, adopts line classification method of the present invention can make rational classification.
Step 4, data extract
Just data extract can have been done after carrying out above preliminary work.Carried out the drawing of coordinatograph Unified Treatment before opening, and chose a pipeline, left button is clicked this pipeline and is chosen; Menu appears in right-click then, selects " characteristic ", and the software window upper left corner this occurs and chooses the pipeline fundamental characteristics; Check " figure layer " option, record figure below layer title; Click the Format For menu item then, select " figure layer " the layer management window to occur, the figure layer of before the title row find, writing down is closed other and this irrelevant figure layer of figure layer.Only be left this pipeline place figure layer and associated annotation figure layer this moment in the drawing.
The cardinal rule of data extract is:
1. the data of extracting are consistent with artwork data.
2. drawing contrasts and staggers the time, and a whole set of drawing is contrasted, and the common trait of getting most of drawings is a standard.
3. the data extract of same type of pipeline is accomplished by same people as far as possible.
The basic skills of data extract is:
1. the pipeline data extract from left to right, from top to down.
2. get rid of the pipeline information that need not to be concerned about.Because the pipeline information that embodies in the comprehensive pipeline drawing is a lot, the data that only need extraction to need here.
3. left button is clicked and is chosen pipeline; Mouse is placed on respectively on left end point and the right endpoint; After waiting to occur green filled box, write down X, Y coordinate figure that the status bar lower left corner shows respectively, and on this depot siding, find markup information " absolute altitude " and " specification " and write down; This depot siding information is added in the temporary file to storage after being convenient to.
Step 5, data are kept in
The similar pipeline information of extracting is stored in same the EXCEL table temporarily, form several EXCEL tables, the batch of being convenient to late time data imports.
Wherein, choosing drawing is unitized in order data to be extracted to be carried out coordinate with selecting 0 point coordinate, makes spatial data all in same coordinate system; Line classification is complicated pipeline type of being divided in the subway, so both has been convenient to data extract, also is convenient to data storage.
The present invention can extract the information of using when comprehensive pipeline attribute information of subway and spatial information and pipeline are played up in three-dimensional scenic from AutoCAD figure, for the comprehensive pipeline three-dimensional visualization of subway management system provides the data support.In order to reach this purpose; At first need screen a cover AutoCAD drawing, fetch pipeline related data and scene modeling desired data then, wherein the data of scene modeling can not embody in drawing fully; Need the fact-finding image data, carry out the data correction of scene modeling again.
Fact proved and from the AutoCAD drawing, to extract required pipeline data effectively that the data of extracting all keep the consistance of height with the drawing data with the present invention.And the availability and the portability of height, the data management after being convenient to during system development are arranged with the data that the present invention extracts.
Embodiment
Library municipal station with No. 2 lines of Xi'an subway is an example below, specifically describes the leaching process of the comprehensive pipeline data at this station.
The comprehensive pipeline drawing of library, Xi'an station subway (dwg formatted file) that partner is provided screens, and it is not being carried out under the prerequisite of any modification, finds out up-to-date pipeline planimetric map, like the planimetric map of platform, all kinds of pipelines of station hall layer.
For all figure that select, utilization AutoCAD carries out the coordinate alignment as a reference with the concrete structure in the main structure (it is effective to contain platform, subway concourse etc.) among each figure.According to pipeline design person's custom with the summit, the concrete structure lower left corner in the horizontal cross-section drawing as X, Y coordinate system 0 point; Promptly this point coordinate is (0; 0), the lowermost layer at books station, city as basic unit, is designated as the acceptance of the bid of bottom longitudinal profile drawing 0.000 surface level, 0 point as the Z axle; Therefore 0 of the three-dimensional coordinate at this station is X, Y coordinate 0 point on this plane, upwards is followed successively by underground two layers of top, B1 top.Operation in AutoCAD software is; Open " moving " → selected state hurdle " Object Snap " button under drawing → Ctrl+A (full choosing) → click " modification " menu; Move to selected coordinate 0 position with mouse this moment; Software can automatically be caught intersection point and also the little square frame of khaki occurred, and this moment, left button was clicked, and rolling mouse is to absolute 0 and to click left button definite of software set; The perhaps rolling mouse and the distance that will move with keyboard input, left button is clicked definite then.
According to the characteristics of the comprehensive pipeline design in books pipe station, city, according to the shape and the function of pipeline it to be classified, line classification sees the following form 1.
Table 1 embodiment of the invention line classification table
After line classification, set the content specification standards that pipeline extracts.The unified content standard that extracts is as shown in table 2.According to above-mentioned steps four described methods the pipeline spatial information is extracted, it is extracted in the excel file.The extraction result of part pipeline (the negative one deck ajutage temporary file table in library municipal station) is as shown in table 3.
Table 2 pipeline is set drawing information and is extracted template
The negative one deck ajutage temporary file table in table 3 library municipal station
Claims (3)
1. based on the comprehensive pipeline data extraction method of the subway of AutoCAD drawing, it is characterized in that: choose the AutoCAD drawing as data source, 0 on selected coordinate also carries out the unitized processing of coordinate system with selected drawing, extracts data and storage then.
2. the comprehensive pipeline data extraction method of the subway based on the AutoCAD drawing as claimed in claim 1; It is characterized in that: after selected drawing being carried out the unitized processing of coordinate system; The comprehensive pipeline of subway is classified, then, category fetch pipeline data; The similar pipeline data of extracting are temporary in same EXCEL table, import the three-dimensional pipeline emulation management platform that the later stage makes up in batches.
3. according to claim 1 or claim 2 the comprehensive pipeline data extraction method of the subway based on the AutoCAD drawing: it is characterized in that: 0 on said selected coordinate for the summit, the concrete structure lower left corner in the horizontal cross-section drawing as X, Y coordinate system 0 point; Promptly this point coordinate is (0; 0); With this subway station lowermost layer as basic unit, bottom longitudinal profile drawing acceptance of the bid is designated as 0.000 surface level as the Z axle 0 point, then 0 of the three-dimensional coordinate of whole subway station is X, Y coordinate 0 point on this plane.
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| CN104951602A (en) * | 2015-01-09 | 2015-09-30 | 中国核工业二三建设有限公司 | Device and method for extracting material list from Auto CAD axonometric drawing |
| CN105760626A (en) * | 2016-03-21 | 2016-07-13 | 北京交通大学 | Pipeline routing map generating system and method for newly-built subway station |
| CN106339518A (en) * | 2015-07-10 | 2017-01-18 | 陈明德 | Computation system and method for engineering cost |
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| CN103927419A (en) * | 2014-04-18 | 2014-07-16 | 山东泰华电讯有限责任公司 | Data processing method and system for CAD urban pipeline as-built drawing based on ArcGIS platform |
| CN104951602A (en) * | 2015-01-09 | 2015-09-30 | 中国核工业二三建设有限公司 | Device and method for extracting material list from Auto CAD axonometric drawing |
| CN106339518A (en) * | 2015-07-10 | 2017-01-18 | 陈明德 | Computation system and method for engineering cost |
| CN105760626A (en) * | 2016-03-21 | 2016-07-13 | 北京交通大学 | Pipeline routing map generating system and method for newly-built subway station |
| CN105760626B (en) * | 2016-03-21 | 2018-11-23 | 北京交通大学 | The pipeline route figure at new subway station generates system and method |
| CN106528946A (en) * | 2016-10-18 | 2017-03-22 | 天津理工大学 | Method for inserting AutoCAD graph blocks in batches |
| CN106528946B (en) * | 2016-10-18 | 2019-06-25 | 天津理工大学 | A kind of method of batch insertion AutoCAD segment |
| CN107169203A (en) * | 2017-05-17 | 2017-09-15 | 重庆尔安机电设备工程有限公司 | A kind of plumbing system auto-discharing method |
| CN107169203B (en) * | 2017-05-17 | 2020-11-20 | 重庆尔安机电设备工程有限公司 | Automatic discharging method for building pipeline system |
| CN107908658B (en) * | 2017-10-17 | 2022-01-04 | 天津大学 | Method for converting computer-aided design (CAD) to Single Wire Multimedia Memory (SWMM) inp file |
| CN107908658A (en) * | 2017-10-17 | 2018-04-13 | 天津大学 | A kind of CAD turns the new method of the inp files of SWMM |
| CN108305304A (en) * | 2018-02-28 | 2018-07-20 | 灵宝金源矿业股份有限公司 | A kind of batch record point methods for drawing engineering sectional view |
| CN113076573B (en) * | 2021-04-15 | 2021-09-10 | 北京城建设计发展集团股份有限公司 | Computer-aided system for weak current design of rail transit |
| CN113076573A (en) * | 2021-04-15 | 2021-07-06 | 北京城建设计发展集团股份有限公司 | Computer-aided system for weak current design of rail transit |
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Application publication date: 20121128 |