CN102609687A - Subway construction drawing and engineering parameter automatic identification method - Google Patents
Subway construction drawing and engineering parameter automatic identification method Download PDFInfo
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Abstract
The invention provides a subway construction drawing and engineering parameter automatic identification method. A user interface module, a basic primitive identification rule module, a building element identification rule module, an engineering parameter extraction rule module, a basic primitive identification module, a building element identification module and an engineering parameter extraction module are adopted; and the subway construction drawing and engineering parameter automatic identification method is specially used for implementing a technical scheme for identifying engineering parameters related to the risk management in an engineering drawing on the aspect of subway engineering construction and the data basis is provided for a further risk management technical scheme.
Description
Technical field
The invention belongs to the engineering drawing distinguishment technical field, particularly a kind of subway work drawing and engineering parameter automatic identifying method.
Background technology
Engineering drawing identification is a branch in Figure recognition field, and the Figure recognition area research relates to the identification of all kinds of drawings such as Machine Design figure, logical circuitry, map, architectural drawing, music score, LOGO and symbolic information.Can engineering drawing be divided into according to design information carrier attribute difference: the polar plot that papery engineering drawing and CAD software are drawn.Recognition technology to paper drawing mainly comprises: the raster pattern vector technology that scanning forms; The recognition methods of primary graphic element (straight line, arc, dimension line etc.); The recognition methods of specialty graphic element (the for example door in the architectural drawing, window, stair etc.); Unfavorable factors such as its research emphasis is how to eliminate in the raster pattern is blured, stain, broken string improve and know the figure accuracy the influence of drawing Symbol recognition.
The polar plot research emphasis of drawing for CAD software is the identification and the understanding of professional graphical symbol, so that form structurized graphical information storehouse.Engineering drawing recognizer commonly used comprises: structuring coupling, grammer coupling, based on methods such as constraint, neural network, statistical classification, decision trees.Because the subway engineering construction drawing has characteristics such as standardization level is low, typical structure member kind is more, array configuration is relevant with construction, geology longitudinal diagram, stratum legend symbol rotational deformation; Therefore, the identification of subway engineering working drawing needs the automatic identifying method of special.
In the application facet of engineering drawing recognition technology, in mechanical design field, form electronic drawings and archives behind the raster pattern vector quantization that scanning forms to paper drawing, so that improve the product design quality, reduce design cost and shorten the product design cycle.In field of house buildings, through typical pel identification such as working drawing post, beam, plate, wall, reconstruct three-dimensional building model is mainly used in computing machine automatic engineering amount and calculates.Because American-European developed country subway construction peak period is in the 70-80 age in 20th century, the application of cad technique in the construction work design at that time also do not popularized, and rare document relates to the research of subway engineering structural working drawing typical figure metasymbol system identification aspect.
And the primary work of traditional subway work risk identification process is manual read's the whole series construction drawings; Understand engineering characteristic and mentality of designing; Have senior engineer's reading of enriching construction experience and understand a cover building enclosure construction drawing (general 25-30 opens the A1 drawing) and need 2 working days approximately; The understanding of drawing information is received the influence of factors such as professional's level of skill, wholwe-hearted degree, health, working environment; The individual difference of this artificial interpreting blueprints tends to cause that work efficiency is not high, to understand subjectivity strong, and problems such as the misreading of easy generation information, omission.
At subway work drawing recognition technology theoretical side; The The Metro Construction Drawings Recognition For Risk Identification paper that delivered at Computational Intelligence and Software Engineering (CiSE) by patent applicant leader's of the present invention project team in Dec, 2010; In the paper the whole recognition strategy of different construction drawings and metro building element recognition strategy (based on the syntax rule coupling, based on the graphics template coupling, based on the topological structure coupling with based on the building element recognizer of statistical method coupling) are inquired into, but do not had the concrete technical scheme realization work of probing into.
Above-mentioned research can be found out: the existing more achievement in research of the current techique of engineering drawing identification; The drawing recognition technology is reseted existing application of result case aspect meter, the quantities calculating at product, and is that the concrete technical scheme that solves the subway work drawing pel notation identification of traditional subway work risk identification work problem and be applied to the risk management field realizes that research does not appear in the newspapers as yet.
Summary of the invention
The present invention is directed to the deficiency of prior art; A kind of subway work drawing and engineering parameter automatic identifying method are provided; Be exclusively used in and realize a kind of technical scheme of discerning engineering parameter relevant in the engineering drawing of subway engineering construction aspect, and be that further risk management technology scheme provides the data basis with risk management.
A kind of subway work drawing of the present invention and engineering parameter automatic identifying method is characterized in that including Subscriber Interface Module SIM, element figure recognition rule module, building element recognition rule module, engineering parameter extracting rule module, element figure identification module, building element identification module and engineering parameter extraction module.
And Subscriber Interface Module SIM is realized user interactions; The function that comprises two aspects: the first is accepted the user and is uploaded the subway work drawing file, then the subway construction drawing is carried out the file layout inspection; It two is with element figure identification module, building element identification module and engineering parameter extraction module gained feedback user as a result, thereby realizes that the user checks the function of uploading drawing file recognition result information.
Element figure recognition rule module, be used to preserve the identification element figure the rule that should follow, said element figure is meant key elements such as point in the digital mapping, line, circle.This cover element figure recognition rule is based on the DXF file layout and sums up, and said DXF file layout is the vector data file form that is used for carrying out between AutoCAD and other software opening that cad data exchanges of autodesk, inc.'s exploitation.
The inventor analyzes all subway work drawings that 10 workers are ordered, and sums up the element figure relevant with building element and mainly contains 5 kinds, and extracting rule is as shown in the table:
| The element figure code | The element figure title | Identifying information |
| Line | Line segment | Unique identifier, two-end-point coordinate, line style |
| LwpolyLine | Broken line | Unique identifier, two-end-point coordinate, line style |
| Circle | Circle | Unique identifier, central coordinate of circle, radius |
| Text | Text | Unique identifier, end points coordinate, literal |
| MText | Multiline text | Unique identifier, end points coordinate, group of text |
Unique identifier described in the table is meant a unique character string, is used for different element figure object in the mark DXF form drawing.
The element figure identification module receives the subway work drawing file information of Subscriber Interface Module SIM transmission and the recognition rule that calls in the element figure recognition rule module is decomposed into element figure information with fileinfo, and gives the user through Subscriber Interface Module SIM with the element figure information feedback.
Building element recognition rule module is used to preserve the rule that identification building element institute should follow, and said building element is meant forms the elementary cell of building, like stake, column and support etc.;
Accomplish the identification work of building element because subway work drawing building element kind is more, information dispersion, array configuration are relevant with construction, need make up 3 kinds of different algorithms.
(1) algorithm 1: mate based on syntax rule
Be used to discern the engineering drawing standard drawing metasymbol little based on the syntax rule coupling with the subway profession symbol degree of association; Its recognizer is: at first adopt first-order predicate logic that the identification syntax rule is described; Read the engineering drawing data then and obtain the object to be identified attribute; Carry out reasoning from logic at last, obtain matching result.
For example: the recognition rule to the mark lead-in wire adopts the first-order predicate logic formalized description to be:
Wherein: L-straight line set, the set of P-broken line, the YL-set that goes between
This recognition rule will mark lead-in wire and be defined as: 1) two summit intersecting straight lines, and angle is right angle or obtuse angle; 2) wherein a line is a horizontal line.
The process prescription of identification mark lead-in wire is: search element figure information, find out L, P set, and traversal satisfies Intersect, and (m, n) element of a function add the YL set to, accomplish the identification of mark lead-in wire.
(2) algorithm 2: mate based on graphics template
The structural method that belongs to the Symbol recognition field based on the graphics template matching algorithm.Be mainly used in the building element in the identification subway work drawing.Its recognizer is described as: at first set up the model of cognition of building element, search for element figure then, it is carried out feature extraction, set up proper vector, last and model of cognition matees, and accomplishes identification work.The emphasis of this method is the rule description to every class template.
For the building element with regular shape, for example: fender post is generally circle, can set up graphics template, and main recognition feature is: 1) circle; 2) contain " Φ ", " boring ", " stake " character in the mark; The space constraint rule is: tangent with outer envelope curve of foundation ditch or the outer unwrapping wire of foundation ditch.The search element figure, detect its markup information whether with template matches, detect space constraint and whether satisfy, whether the matching degree differentiation according to candidate symbol and template is fender post at last.Wherein, the space constraint rule is based on algorithm 3.
(3) algorithm 3: mate based on topological structure
In the subway work drawing, have relation of interdependence between some building element, the restriction relation in this plane or space is referred to as topological constraints.For example: in metro station construction figure design, generally be arranged in the fender post outside, and intersect with fender post or tangent as the rotary churning pile of water-stop curtain.
Coupling based on topological structure is based on a kind of of constraint matching process, for above-mentioned figure with fixing topological constraints, can adopt the method identification.For example: the recognition rule of rotary churning pile adopts the BNF normal form to be described as:
< rotary churning pile * >: :=< rotary churning pile face profile>[< rotary churning pile mark >]
< rotary churning pile face profile >: :=< circle>< space constraint>< dimension constraint >
< space constraint >: :=tangent (fender post) | intersect (fender post)
< dimension constraint >: :=D (rotary churning pile) < D (fender post)
< rotary churning pile mark >: :=Φ & rotary churning pile
Its implication adopts natural language description to be: 1) circle; 2) tangent or crossing with fender post; 3) <bored piles footpath, stake footpath; 4) contain " Φ " ∩ " rotary churning pile " in the mark.
Mainly contain 7 kinds with the relevant building element of identification, extracting rule is as shown in the table:
| The building element code | The building element term | Follow algorithm |
| StationSides | Envelope curve outside the station | Algorithm 1 |
| Guardpost | Fender post | Algorithm 1 algorithm 2 all need use for 3 three kinds with algorithm |
| JetGroutingPile | Rotary churning pile | Algorithm 1 algorithm 2 all need use for 3 three kinds with algorithm |
| SupportPillar | Support post | Algorithm 1 |
| SteelSupport | Steel supports | Algorithm 1 |
| Ground | Ground | Algorithm 1 all need use with algorithm 2 |
| Floor | Substrate | Algorithm 1 all need use with algorithm 2 |
Building element identification module receives the element figure information that the element figure identification module transmits; And call and build recognition rule in the element recognition rule module; The element figure information analysis is the building element information, and will builds element through Subscriber Interface Module SIM and feed back to the user.
Engineering parameter extracting rule module, be used to preserve the recognitive engineering parameter the rule that should follow, said engineering parameter is meant the geometric parameter of all kinds of building elements; Physical parameter; Mechanics parameters etc. and are discerned relevant engineering parameter and are mainly contained 17 kinds, and extracting rule is as shown in the table:
| The engineering parameter code | The engineering parameter title | Algorithm |
| StationEndWellNum | Station end well number | The interval number of overgauge section between the combination region of envelope curve limit outside the station |
| StationLength | Packet length outside the station | Station outsourcing endpoints x axle is at a distance of longest distance |
| StationWidth | Station standard paragraphs width | Station outsourcing line standard section end points y axle apart |
| GuardpostDia | Fender post stake footpath | The fender post radius value multiply by 2 |
| GuardpostFrom | Fender post stake heart distance | The fender post and a nearest fender post distance of center circle of band mark |
| JetGroutingPileDia | Rotary churning pile stake footpath | The rotary churning pile radius value multiply by 2 |
| JetGroutingPileFrom | Rotary churning pile stake heart distance | The rotary churning pile and a nearest rotary churning pile distance of center circle of band mark |
| SupportPillarSetUp | Support post sets up | Judge whether to exist building element support post |
| SteelSupportDia | Steel supports diameter | Steel supports the numeral of D=back in the mark |
| SteelSupportThickness | The steel support thickness | Steel supports the numeral of δ=back in the mark |
| StationHigh | The station standard paragraphs degree of depth | Ground and substrate y axial coordinate apart |
| StationFloorStratum | Stratum at the bottom of the foundation ditch | Substrate stratum mark literal |
| GuardpostHigh | The fender post stake is long | Fender post flash two-end-point y axial coordinate apart |
| GuardpostStratum | The fender post stratum | Fender post stratum mark literal |
| GuardpostInRockState | Fender post is gone into the rock state | Whether contain " rock " in the stratum literal of fender post |
| GuardpostDepthRatio | The fender post ratio that buries | Fender post flash two-end-point y axial coordinate (y1, y2) with substrate y axial coordinate (y), through formula max (y1, y2)-y)/abs (y1-y2) obtains |
| SteelSupportLayer | Steel supports the number of plies | Steel supports the mark number |
The engineering parameter extraction module receives the building element information that building element identification module transmits, and calls recognition rule in the engineering parameter extracting rule module, and the engineering parameter information in the building element information is extracted; And pass through Subscriber Interface Module SIM with engineering parameter information feedback user.
And, described a kind of subway work drawing and engineering parameter automatic identifying method, wherein element figure identification module treatment scheme is:
(1) pre-service: the subway work drawing file that receives is converted into the document flow that can supply software identification;
(2) split file section:, each the graphic element file section in the Element section in the document flow is separated according to DXF file layout standard;
(3) resolve element figure: the recognition rule according in the element figure recognition rule module, the graphic element file section is filtered and information extraction, element figure information analysis that will be relevant with the subway risk management comes out.
And, described a kind of subway work drawing and engineering parameter automatic identifying method, wherein build element identification module treatment scheme and be:
(1) receives element figure: receive element figure as building element identification candidate;
(2) preliminary identification: according to the recognition rule in the building element recognition rule module, at first discern, mainly adopt algorithm 1 and algorithm 2 to not relying on the architecture information that other building elements can discern;
To different building elements, concrete recognition rule is:
Each metro building element candidate's mark recognition rule is identical, should satisfy following bar rule simultaneously:
1) contains the specific character element set and (should comprise literal " X " or " Y " like envelope curve outside the station; Fender post should comprise literal " bored concrete pile " or " caisson " or " SWM stake "; Rotary churning pile should comprise literal " rotary churning pile " etc., and steel supports should comprise literal " steel support ", " D " and " δ ", and support post should comprise literal " column "; Ground should comprise literal " ground ", and substrate should comprise literal " substrate " or " at the bottom of the foundation ditch ");
2) apart from the parallel segment group in 1.5 times of distances of group of text;
3) the corresponding end points of parallel segment group overlaps and has the sets of line segments of angle.
With the outer envelope curve in identification station is example, at first in the building enclosure floor plan of subway work station, identifies outside candidate's the station envelope curve and marks and identify envelope curve outside the station according to rule then, should satisfy following 3 rules simultaneously:
1) sets of line segments that envelope curve mark lead-in wire end points intersects and outside candidate's the station;
2) line style is the line segment of dotted line in the sets of line segments;
3) in sets of line segments, can form the line segment of enclosed region.
At last according to rule, the candidate's that will intersect with station outsourcing endpoints the outer envelope curve mark in station confirms as that envelope curve marks outside the station.
With identification ground and substrate is example, at first in subway work building enclosure drawing in side sectional elevation, identifies candidate's ground and substrate mark, identifies ground and substrate according to rule then, should satisfy following rule simultaneously:
1) and the sets of line segments that intersects of candidate's ground or substrate mark lead-in wire end points;
2) the essentially identical sets of line segments of two-end-point y axial coordinate in the sets of line segments.
Then according to rule, the candidate's that will intersect with ground or substrate ground or substrate mark are confirmed as ground or substrate mark.
According to rule, discern the corresponding stratum of substrate literal at last, mainly follow following 2 rules:
1) obtains the literal that all literal comprise " rock ", " plain fill " or " clay ";
2) literal y axial coordinate is more than substrate y axial coordinate, and nearest apart from substrate.
With the identification support post is example, and the steel support and the support post mark that only need in the building enclosure floor plan of subway work station, to identify the candidate get final product.
Be supported for example with the identification steel, the steel support and the support post mark that only need in subway work supporting plane arrangenent diagram, to identify the candidate get final product.
(3), adopt 3 pairs of algorithms to need other building elements of dependence could discern successful building element and discern according to recognition rule in the building element recognition rule module 30 and the building element that has identified;
To different building elements, concrete recognition rule is:
With the identification fender post is example, at first in subway work supporting plane arrangenent diagram, identifies candidate's fender post mark;
Identify the fender post pile body according to rule then, should satisfy following 2 rules simultaneously:
1) intersect circular of central coordinate of circle and candidate's fender post mark lead-in wire end points and with the station outside envelope curve tangent;
2) with rule 1) middle radius of a circle is identical, and distance of center circle is no more than the circle of 2 times of diameters.
At last according to rule, the candidate's that will overlap with the fender post central coordinate of circle fender post mark is confirmed as the fender post mark.
Secondly in subway work building enclosure drawing in side sectional elevation, identify candidate's fender post mark, identify fender post transverse section pile body according to rule then, should satisfy following 2 rules simultaneously:
1) mark lead-in wire end points between the closed area of forming by sets of line segments in;
2) sets of line segments is fender post transverse section pile body between the nearest closed area of mark lead-in wire end points.
According to rule, lead-in wire end points candidate's in the sets of line segments between closed area fender post mark is confirmed as the fender post mark then.
According to rule, discern the corresponding stratum of fender post literal at last, mainly follow following 2 rules:
1) obtains the literal that all literal comprise " rock ", " plain fill " or " clay ";
2) with sets of line segments level between this closed area and y axial coordinate value minimum as the fender post base, literal y axial coordinate is more than fender post y axial coordinate, and is and nearest apart from the fender post base.
With the identification rotary churning pile is example, at first in the building enclosure floor plan of subway work station, identifies candidate's rotary churning pile mark, identifies the rotary churning pile pile body according to rule then, should satisfy following 2 rules simultaneously:
What 1) central coordinate of circle and candidate's rotary churning pile mark lead-in wire end points intersected is circular and tangent or crossing with fender post, and radius is less than the fender post radius;
2) with rule 1) middle radius of a circle is identical, and distance of center circle is no more than the circle of 2 times of diameters and fender post diameter sum.
At last according to rule, the candidate's that will overlap with the rotary churning pile central coordinate of circle rotary churning pile mark is confirmed as the rotary churning pile mark.
(4) building rubidium marking: the element figure that identifies is built rubidium marking, give fender post pile body building attribute like the circle that will meet fender post pile body rule, the line segment that will meet fender post mark rule is given fender post mark lead-in wire attribute.
And, described a kind of subway work drawing and engineering parameter automatic identifying method, wherein engineering parameter extraction module treatment scheme is:
(1) receives the advance data that the building pel extracts as engineering parameter;
(2) the building element information that receives is put in order,, extracted specific geometric attribute (like coordinate information) and word attribute (like the explanatory note in the mark) according to engineering parameter extracting rule module;
(3), geometric attribute that extracts and word attribute are calculated and draw final engineering parameter according to extracting rule.
The present invention proposes the engineering drawing recognition application to subway risk management engineering parameter field; Can be through parsing to electronic drawing; The final identification that realizes the engineering parameter directly related with the construction safety risk identification such as subway station, running tunnel shape geological information, supporting structure system architectural drawing metamessage, engineering geology hydrologic condition, recognition result can supply subway work security risk analysis software systems to call simultaneously.The present invention has the following advantages:
(1) it is that a special risk management engineering parameter recognition technology scheme to the subway work drawing realizes, has filled up the blank that does not have special subway construction drawing risk management engineering parameter recognition technology scheme to realize at present;
(2) it has adopted computer means to discern the way of risk management engineering parameter; Break away from the problem that manual read's engineering drawing workload was big in the past, the time long and be prone to make mistakes, improved the risk management engineering parameter identification efficiency of subway work drawing greatly;
(3) its integrated application is mated, is made up the concrete technical scheme realization that element is built in the subway work risk management based on the graphics template coupling with based on the building element recognizer that topological structure matees based on syntax rule, effectively raises the accuracy of building element identification.
Description of drawings
Fig. 1 is the structural representation of a kind of subway work drawing of the present invention and engineering parameter automatic identifying method.
Fig. 2 is the operation phase process flow diagram of a kind of subway work drawing of the present invention and engineering parameter automatic identifying method.
Fig. 3 is that the engineering parameter of a kind of subway work drawing of the present invention and engineering parameter automatic identifying method extracts the stage process flow diagram.
Wherein, Subscriber Interface Module SIM 10, element figure recognition rule module 20, building element recognition rule module 30, engineering parameter extracting rule module 40, element figure identification module 50, building element identification module 60, engineering parameter extraction module 70.
Embodiment
Below in conjunction with embodiment invention is further explained.
As shown in Figure 1; Subway work drawing that the embodiment of the invention provides and engineering parameter automatic identifying method include Subscriber Interface Module SIM 10, element figure recognition rule module 20, building element recognition rule module 30, engineering parameter extracting rule module 40, element figure identification module 50, building element identification module 60 and engineering parameter extraction module 70, and each module can technical scheme adopts computer software to realize according to the present invention by those skilled in the art.
Subscriber Interface Module SIM 10 is used to realize user interactions; The function that comprises two aspects: the first is accepted the user and is uploaded the subway work drawing file; Then the subway construction drawing is carried out the file layout inspection, will be submitted to element figure identification module 50 through the subway work drawing file of inspection.Subway construction drawing file layout checked can prevent to upload mistake, must adopt the drawing file of DXF form could be by correct identification, if not, will not accept, and the prompting user uploads the drawing file that meets form again.It two is with element figure identification module 50, building element identification module 60 and engineering parameter extraction module 70 gained feedback user as a result, thereby realizes that the user checks the function of uploading drawing file recognition result information.
In order to discern the subway work drawing, the recognition rule of corresponding cognitive phase need be provided.The embodiment of the invention provides element figure recognition rule module 20, building element recognition rule module 30, engineering parameter extracting rule module 40.
Element figure recognition rule module 20, be used to preserve the identification element figure the rule that should follow, said element figure is meant key elements such as point in the digital mapping, line, circle.This cover element figure recognition rule is based on the DXF file layout and sums up, and said DXF file layout is the vector data file form that is used for carrying out between AutoCAD and other software opening that cad data exchanges of autodesk, inc.'s exploitation.
The inventor analyzes all subway work drawings that 10 workers are ordered, and sums up the element figure relevant with building element and mainly contains 5 kinds, and is as shown in table 1:
Table 1 element figure
| The element figure code | The element figure title | Identifying information |
| Line | Line segment | Unique identifier, two-end-point coordinate, line style |
| LwpolyLine | Broken line | Unique identifier, two-end-point coordinate, line style |
| Circle | Circle | Unique identifier, central coordinate of circle, radius |
| Text | Text | Unique identifier, end points coordinate, literal |
| MText | Multiline text | Unique identifier, end points coordinate, group of text |
Said unique identifier is meant a unique character string, is used for different element figure object in the mark DXF form drawing.
Building element recognition rule module 30 is used to preserve the rule that identification building element institute should follow, and said building element is meant forms the elementary cell of building, like stake, column and support etc.
Accomplish the identification work of building element because subway work drawing building element kind is more, information dispersion, array configuration are relevant with construction, need make up 3 kinds of different algorithms.
(1) algorithm 1: mate based on syntax rule
Be used to discern the engineering drawing standard drawing metasymbol little based on the syntax rule coupling with the subway profession symbol degree of association; Its recognizer is: at first adopt first-order predicate logic that the identification syntax rule is described; Read the engineering drawing data then and obtain the object to be identified attribute; Carry out reasoning from logic at last, obtain matching result.
For example: the recognition rule to the mark lead-in wire adopts the first-order predicate logic formalized description to be:
Wherein: L-straight line set, the set of P-broken line, the YL-set that goes between
This recognition rule will mark lead-in wire and be defined as: 1) two summit intersecting straight lines, and angle is right angle or obtuse angle; 2) wherein a line is a horizontal line.
The process prescription of identification mark lead-in wire is: search element figure information, find out L, P set, and traversal satisfies Intersect, and (m, n) element of a function add the YL set to, accomplish the identification of mark lead-in wire.
(2) algorithm 2: mate based on graphics template
The structural method that belongs to the Symbol recognition field based on the graphics template matching algorithm.Be mainly used in the building element in the identification subway work drawing.Its recognizer is described as: at first set up the model of cognition of building element, search for element figure then, it is carried out feature extraction, set up proper vector, last and model of cognition matees, and accomplishes identification work.The emphasis of this method is the rule description to every class template.
For the building element with regular shape, for example: fender post is generally circle, can set up graphics template, and main recognition feature is: 1) circle; 2) contain " Φ ", " boring ", " stake " character in the mark; The space constraint rule is: tangent with outer envelope curve of foundation ditch or the outer unwrapping wire of foundation ditch.The search element figure, detect its markup information whether with template matches, detect space constraint and whether satisfy, whether the matching degree differentiation according to candidate symbol and template is fender post at last.Wherein, the space constraint rule is based on algorithm 3.
(3) algorithm 3: mate based on topological structure
In the subway work drawing, have relation of interdependence between some building element, the restriction relation in this plane or space is referred to as topological constraints.For example: in metro station construction figure design, generally be arranged in the fender post outside, and intersect with fender post or tangent as the rotary churning pile of water-stop curtain.
Coupling based on topological structure is based on a kind of of constraint matching process, for above-mentioned figure with fixing topological constraints, can adopt the method identification.For example: the recognition rule of rotary churning pile adopts the BNF normal form to be described as:
< rotary churning pile * >: :=< rotary churning pile face profile>[< rotary churning pile mark >]
< rotary churning pile face profile >: :=< circle>< space constraint>< dimension constraint >
< space constraint >: :=tangent (fender post) | intersect (fender post)
< dimension constraint >: :=D (rotary churning pile) < D (fender post)
< rotary churning pile mark >: :=Φ & rotary churning pile
Its implication adopts natural language description to be: 1) circle; 2) tangent or crossing with fender post; 3) <bored piles footpath, stake footpath; 4) contain " Φ " ∩ " rotary churning pile " in the mark.
Mainly contain 7 kinds with the relevant building element of identification, as shown in table 2:
Table 2 building element
| The building element code | The building element term | Follow algorithm |
| StationSides | Envelope curve outside the station | Algorithm 1 |
| Guardpost | Fender post | Algorithm 1 algorithm 2 all need use for 3 three kinds with algorithm |
| JetGroutingPile | Rotary churning pile | Algorithm 1 algorithm 2 all need use for 3 three kinds with algorithm |
| SupportPillar | Support post | Algorithm 1 |
| SteelSupport | Steel supports | Algorithm 1 |
| Ground | Ground | Algorithm 1 all need use with algorithm 2 |
| Floor | Substrate | Algorithm 1 all need use with algorithm 2 |
Engineering parameter extracting rule module 40, be used to preserve the recognitive engineering parameter the rule that should follow, said engineering parameter is meant the geometric parameter of all kinds of building elements, physical parameter, mechanics parameters etc. and are discerned relevant engineering parameter and mainly contained 17 kinds, and are as shown in table 3:
Table 3 engineering parameter
| The engineering parameter code | The engineering parameter title | Algorithm |
| StationEndWellNum | Station end well number | The interval number of overgauge section between the combination region of envelope curve limit outside the station |
| StationLength | Packet length outside the station | Station outsourcing endpoints x axle is at a distance of longest distance |
| StationWidth | Station standard paragraphs width | Station outsourcing line standard section end points y axle apart |
| GuardpostDia | Fender post stake footpath | The fender post radius value multiply by 2 |
| GuardpostFrom | Fender post stake heart distance | The fender post and a nearest fender post distance of center circle of band mark |
| JetGroutingPileDia | Rotary churning pile stake footpath | The rotary churning pile radius value multiply by 2 |
| JetGroutingPileFrom | Rotary churning pile stake heart distance | The rotary churning pile and a nearest rotary churning pile distance of center circle of band mark |
| SupportPillarSetUp | Support post sets up | Judge whether to exist building element support post |
| SteelSupportDia | Steel supports diameter | Steel supports the numeral of D=back in the mark |
| SteelSupportThickness | The steel support thickness | Steel supports the numeral of δ=back in the mark |
| StationHigh | The station standard paragraphs degree of depth | Ground and substrate y axial coordinate apart |
| StationFloorStratum | Stratum at the bottom of the foundation ditch | Substrate stratum mark literal |
| GuardpostHigh | The fender post stake is long | Fender post flash two-end-point y axial coordinate apart |
| GuardpostStratum | The fender post stratum | Fender post stratum mark literal |
| GuardpostInRockState | Fender post is gone into the rock state | Whether contain " rock " in the stratum literal of fender post |
| GuardpostDepthRatio | The fender post ratio that buries | Fender post flash two-end-point y axial coordinate (y1, y2) with substrate y axial coordinate (y), through formula max (y1, y2)-y)/abs (y1-y2) obtains |
| SteelSupportLayer | Steel supports the number of plies | Steel supports the mark number |
Element figure identification module 50 comprises the function of four aspects: the first receives the subway work drawing file information that Subscriber Interface Module SIM 10 transmits; And call recognition rule in the element figure recognition rule module 20; With subway work drawing file information decomposition is element figure information, and said element figure information comprises information such as the type, unique identifier, coordinate of element figure; And the element figure information after will decomposing is submitted to building element identification module 60; And pass through Subscriber Interface Module SIM 10 with element figure information feedback user;
The element figure identification treatment scheme of the embodiment of the invention is:
(1) pre-service: the subway work drawing file that receives is converted into the document flow that can supply software identification;
(2) split file section:, each the graphic element file section in the Element section in the document flow is separated according to DXF file layout standard;
(3) resolve element figure: the recognition rule according in the element figure recognition rule module, the graphic element file section is filtered and information extraction, element figure information analysis that will be relevant with the subway risk management comes out.
With identification circular elements information is example, and identification step is following:
(1) group code in the at first identification group is 0 o'clock class value graphic element file section for " CIRCLE "; Said group is meant the minimum composition unit in the DXF file layout, and the first behavior integer is claimed group code, the corresponding class value of second behavior; Class value can be a character string, also can be floating number;
(2) according to recognition rule; Identify unique identifier, center of circle x axial coordinate, center of circle y axial coordinate, radius; The class value " E17 " of 5,10,20,40 times correspondences of the corresponding group code of difference, " 259313.1607221237 ", " 391739.5216395766 " and " 500.0 "; And it is stored in the database, call in order to building element identification module 60.
Building element identification module 60; Be used to receive the element figure information that element figure identification module 50 transmits; And call and build recognition rule in the element recognition rule module 30; The element figure information analysis is the building element information, and so-called building element information is meant the type information of forming the building element, like fender post pile body, fender post mark lead-in wire and fender post mark literal etc.; And the building element after will resolving is submitted to engineering parameter extraction module 70; And will build the element feedback user through Subscriber Interface Module SIM 10;
The building pel identification treatment scheme of the embodiment of the invention is:
(1) receives element figure: receive element figure as building element identification candidate;
(2) preliminary identification: according to the recognition rule in the building element recognition rule module, at first discern, mainly adopt algorithm 1 and algorithm 2 to not relying on the architecture information that other building elements can discern;
Each metro building element candidate's mark recognition rule is identical, should satisfy following bar rule simultaneously:
1) contains the specific character element set and (should comprise literal " X " or " Y " like envelope curve outside the station; Fender post should comprise literal " bored concrete pile " or " caisson " or " SWM stake "; Rotary churning pile should comprise literal " rotary churning pile " etc., and steel supports should comprise literal " steel support ", " D " and " δ ", and support post should comprise literal " column "; Ground should comprise literal " ground ", and substrate should comprise literal " substrate " or " at the bottom of the foundation ditch ");
2) apart from the parallel segment group in 1.5 times of distances of group of text;
3) the corresponding end points of parallel segment group overlaps and has the sets of line segments of angle.
With the outer envelope curve in identification station is example, at first in the building enclosure floor plan of subway work station, identifies outside candidate's the station envelope curve and marks and identify envelope curve outside the station according to rule then, should satisfy following 3 rules simultaneously:
1) sets of line segments that envelope curve mark lead-in wire end points intersects and outside candidate's the station;
2) line style is the line segment of dotted line in the sets of line segments;
3) in sets of line segments, can form the line segment of enclosed region.
At last according to rule, the candidate's that will intersect with station outsourcing endpoints the outer envelope curve mark in station confirms as that envelope curve marks outside the station.
With identification ground and substrate is example, at first in subway work building enclosure drawing in side sectional elevation, identifies candidate's ground and substrate mark, identifies ground and substrate according to rule then, should satisfy following rule simultaneously:
1) and the sets of line segments that intersects of candidate's ground or substrate mark lead-in wire end points;
2) the essentially identical sets of line segments of two-end-point y axial coordinate in the sets of line segments.
Then according to rule, the candidate's that will intersect with ground or substrate ground or substrate mark are confirmed as ground or substrate mark.
According to rule, discern the corresponding stratum of substrate literal at last, mainly follow following 2 rules:
1) obtains the literal that all literal comprise " rock ", " plain fill " or " clay ";
2) literal y axial coordinate is more than substrate y axial coordinate, and nearest apart from substrate.
With the identification support post is example, and the steel support and the support post mark that only need in the building enclosure floor plan of subway work station, to identify the candidate get final product.
Be supported for example with the identification steel, the steel support and the support post mark that only need in subway work supporting plane arrangenent diagram, to identify the candidate get final product.
(3), adopt 3 pairs of algorithms to need other building elements of dependence could discern successful building element and discern according to recognition rule in the building element recognition rule module 30 and the building element that has identified;
With the identification fender post is example, at first in subway work supporting plane arrangenent diagram, identifies candidate's fender post mark
Identify the fender post pile body according to rule then, should satisfy following 2 rules simultaneously:
1) intersect circular of central coordinate of circle and candidate's fender post mark lead-in wire end points and with the station outside envelope curve tangent;
2) with rule 1) middle radius of a circle is identical, and distance of center circle is no more than the circle of 2 times of diameters.
At last according to rule, the candidate's that will overlap with the fender post central coordinate of circle fender post mark is confirmed as the fender post mark.
Secondly in subway work building enclosure drawing in side sectional elevation, identify candidate's fender post mark, identify fender post transverse section pile body according to rule then, should satisfy following 2 rules simultaneously:
1) mark lead-in wire end points between the closed area of forming by sets of line segments in;
2) sets of line segments is fender post transverse section pile body between the nearest closed area of mark lead-in wire end points.
According to rule, lead-in wire end points candidate's in the sets of line segments between closed area fender post mark is confirmed as the fender post mark then.
According to rule, discern the corresponding stratum of fender post literal at last, mainly follow following 2 rules:
1) obtains the literal that all literal comprise " rock ", " plain fill " or " clay ";
2) with sets of line segments level between this closed area and y axial coordinate value minimum as the fender post base, literal y axial coordinate is more than fender post y axial coordinate, and is and nearest apart from the fender post base.
With the identification rotary churning pile is example, at first in the building enclosure floor plan of subway work station, identifies candidate's rotary churning pile mark, identifies the rotary churning pile pile body according to rule then, should satisfy following 2 rules simultaneously:
What 1) central coordinate of circle and candidate's rotary churning pile mark lead-in wire end points intersected is circular and tangent or crossing with fender post, and radius is less than the fender post radius;
2) with rule 1) middle radius of a circle is identical, and distance of center circle is no more than the circle of 2 times of diameters and fender post diameter sum.
At last according to rule, the candidate's that will overlap with the rotary churning pile central coordinate of circle rotary churning pile mark is confirmed as the rotary churning pile mark.
(4) building rubidium marking: the element figure that identifies is built rubidium marking, give fender post pile body building attribute like the circle that will meet fender post pile body rule, the line segment that will meet fender post mark rule is given fender post mark lead-in wire attribute.
Engineering parameter extraction module 70 is used to receive the building element information that building element identification module 60 transmits, and calls recognition rule in the engineering parameter extracting rule module 40, and the engineering parameter information in the building element information is extracted; And pass through Subscriber Interface Module SIM 10 with engineering parameter information feedback user.
It is as shown in Figure 3 that the engineering parameter of the embodiment of the invention extracts treatment scheme:
(1) receives the advance data that the building pel extracts as engineering parameter;
(2) the building element information that receives is put in order,, extracted specific geometric attribute (like coordinate information) and word attribute (like the explanatory note in the mark) according to engineering parameter extracting rule module 40;
(3), geometric attribute that extracts and word attribute are calculated and draw final engineering parameter according to extracting rule.
Bury than being example to extract the engineering parameter fender post, step is following:
(1) according to the pel of retrieval building one by one, (y1=-80746.03147478621 y2=-104211.0142901415) takes out with substrate y axial coordinate value (y=-95211.01429014128) with fender post flash line segment two-end-point y axial coordinate value;
(2) bury than algorithm according to fender post in the engineering parameter extracting rule module 40, (max (y1, y2)-y)/abs (y1-y2))=14464.98281535507/23464.98281535529 approximates 0.62 to bring value into formula.
Claims (9)
1. subway work drawing and engineering parameter automatic identifying method is characterized in that comprising: Subscriber Interface Module SIM, element figure recognition rule module, building element recognition rule module, engineering parameter extracting rule module, element figure identification module, building element identification module and engineering parameter extraction module.
2. subway work drawing according to claim 1 and engineering parameter automatic identifying method is characterized in that:
Subscriber Interface Module SIM is realized user interactions;
Element figure recognition rule module, be used to preserve the identification element figure the rule that should follow;
The element figure identification module receives the subway work drawing file information of Subscriber Interface Module SIM transmission and the recognition rule that calls in the element figure recognition rule module is decomposed into element figure information with fileinfo, and gives the user through Subscriber Interface Module SIM with the element figure information feedback;
Building element recognition rule module, be used to preserve identification building element the rule that should follow;
Building element identification module receives the element figure information that the element figure identification module transmits; And call and build recognition rule in the element recognition rule module; The element figure information analysis is the building element information, and will builds element through Subscriber Interface Module SIM and feed back to the user;
Engineering parameter extracting rule module, be used to preserve the recognitive engineering parameter the rule that should follow;
The engineering parameter extraction module receives the building element information that building element identification module transmits, and calls recognition rule in the engineering parameter extracting rule module, and the engineering parameter information in the building element information is extracted; And pass through Subscriber Interface Module SIM with engineering parameter information feedback user.
3. a kind of subway work drawing according to claim 1 and 2 and engineering parameter automatic identifying method is characterized in that, described element figure identification module treatment scheme is:
(1) pre-service: the subway work drawing file that receives is converted into the document flow that can supply software identification;
(2) split file section:, each the graphic element file section in the Element section in the document flow is separated according to DXF file layout standard;
(3) resolve element figure: the recognition rule according in the element figure recognition rule module, the graphic element file section is filtered and information extraction, element figure information analysis that will be relevant with the subway risk management comes out.
4. a kind of subway work drawing according to claim 1 and 2 and engineering parameter automatic identifying method is characterized in that, described building element identification module treatment scheme is:
(1) receives element figure: receive element figure as building element identification candidate;
(2) preliminary identification:, at first discern to not relying on the architecture information that other building elements can discern according to the recognition rule in the building element recognition rule module;
(3) secondary identification:, could discern successful building element to other building elements of needs dependence and discern according to recognition rule in the building element recognition rule module and the building element that has identified;
(4) building rubidium marking: the element figure that identifies is built rubidium marking.
5. a kind of subway work drawing according to claim 1 and 2 and engineering parameter automatic identifying method is characterized in that, described engineering parameter extraction module treatment scheme is:
(1) receives the building pel;
(2) geometric attribute extracts: the building element information that will receive is put in order, extracts geometric attribute and word attribute;
(3) engineering parameter calculates: according to engineering parameter extracting rule module, geometric attribute and word attribute be filled in the corresponding extracting rule calculate.
6. a kind of subway work drawing according to claim 1 and 2 and engineering parameter automatic identifying method is characterized in that, the recognition rule in the said element figure recognition rule module is:
。
7. a kind of subway work drawing according to claim 1 and 2 and engineering parameter automatic identifying method is characterized in that, recognition rule is in the said building element recognition rule module:
。
8. a kind of subway work drawing according to claim 1 and 2 and engineering parameter automatic identifying method is characterized in that, recognition rule is in the said engineering parameter extracting rule module:
。
9. a kind of subway work drawing according to claim 7 and engineering parameter automatic identifying method; It is characterized in that, all formulated corresponding concrete rule to the identification of envelope curve, fender post, rotary churning pile, support post, steel support, ground and substrate outside the station in the said building element recognition rule module.
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