CN112215211B - Method for extracting chamber branch link topological relation based on CAD drawing data - Google Patents
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Abstract
The invention discloses a method for extracting room branch link topological relation based on CAD drawing data, which comprises the following steps: s1, collecting data; s2 uploading drawings: uploading an indoor coverage design drawing through an intelligent indoor sub-monitoring system; s3, drawing information extraction: the intelligent branch monitoring system generates a handshake file, reads an indoor coverage design drawing after analysis and monitoring and extracts drawing information; s4, analyzing the drawing information, and performing drawing frame data matching and data type conversion; s5, classifying according to the legend information in each picture frame, extracting the legend information, and outputting json format texts to a specified directory in combination with the indoor distribution equipment information; then extracting the association relationship of the room coverage floor system diagram devices, outputting the association relationship text of each floor room device to a specified directory, and generating an association handshake file; s6 generating a plan and point location information; s7 hierarchical presentation: and the front-end page acquires room topology data from the background to perform hierarchical presentation.
Description
Technical Field
The invention relates to the technical field of combination of computer technology and graphics, in particular to a method for extracting room branch link topological relation based on CAD drawing data.
Background
With the acceleration of 5G network construction and the continuous expansion of network scale of operators, the service requirements are continuously improved, and the operators pay more attention to the user indoor partition perception degree. However, the basic maintenance work faces huge pressure, and the traditional passive indoor distributed system (DAS) becomes a pain point of network quality due to the fact that the number of passive nodes is large, the distribution structure is complex, the alarm capability is poor, and the management and maintenance capabilities are weak. A large number of passive devices are used in a traditional room, and the device and construction quality are difficult to guarantee. And problems such as failure and aging of passive devices increase with the loss of repair over time. Indoor coverage does not have a good monitoring means at present, and operation and maintenance are carried out through traditional manual inspection. Low efficiency and difficult positioning. The traditional chamber has the prominent quality problem, and the system is unmanageable and uncontrollable.
Therefore, in order to change the traditional management mode of 'on-site manual investigation' of the room distribution system, the problem that 'four difficulties' of the traditional room distribution system are difficult to solve is better solved, the room distribution passive system is really brought into the category of digital and intelligent management, the visual monitoring of all room distribution antenna feeder passive devices is realized by means of automatically extracting a smart room distribution link topological structure based on CAD drawing data and combining the Internet of things, the accurate positioning of the problems can be realized without people going to the site, and the operation and maintenance work efficiency is effectively improved.
The intelligent branch control system (for example, the system disclosed in chinese patent document CN 109660307A) is a passive device including a combiner, a coupler, a power divider, and an antenna. The system visually monitors CAD drawing information depending on the passive device and the upper and lower level relation of the device. The information input mode of the passive device can be divided into a manual mode and an automatic CAD automatic introduction mode.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for extracting chamber branch link topological relation based on CAD drawing data, which can automatically extract position information of a passive device and topological link relation from CAD drawing, can provide reliable data for visual topological link fault analysis, overcomes the defects that basic data is wrong and cannot be accurately positioned for topological fault due to manual input, can also better display and analyze in the future, exerts higher value by using the existing data, can realize accurate positioning of problems without people going to the field, and effectively improves operation and maintenance work efficiency.
In order to solve the problems, the technical scheme adopted by the invention is as follows: the method for extracting the room branch link topological relation based on the CAD drawing data specifically comprises the following steps:
s1 data collection: selecting a set of chamber coverage design drawings;
s2 uploading drawings: uploading an indoor coverage design drawing through an intelligent indoor sub-monitoring system;
s3, drawing information extraction: the intelligent indoor partition monitoring system generates handshake files according to the indoor partition coverage design drawings uploaded in the step S2, and reads the indoor coverage design drawings after analysis and monitoring and performs drawing information extraction work;
s4 frame data matching: the intelligent indoor distribution monitoring system analyzes the drawing information extracted in the step S3, and performs drawing frame data matching and data type conversion;
s5 legend information extraction: classifying according to the legend information in each picture frame, extracting the legend information in the plane picture frame, and outputting json format texts to a specified directory by combining with the room division equipment information; then extracting the association relation of the room-based coverage floor system diagram devices, outputting the association relation text of each floor room-based device to a specified directory, generating an association handshake file and informing the intelligent room-based monitoring system of the completion of the analysis of the topological relation;
s6 generating a plan view: the background service of the intelligent indoor distribution monitoring system monitors the association handshake file, reads the analyzed text data and picture data, traverses the indoor distribution equipment association relation text of the floor to generate an upper link and a lower link of the indoor distribution equipment, and extracts floor plane drawings and point location information of corresponding equipment from the indoor distribution equipment information text according to the equipment name;
s7 hierarchical presentation: the front-end page of the intelligent indoor branch monitoring system acquires indoor branch topological data from the background to perform hierarchical presentation, and the function of tracing the link according to the equipment is realized, and the superior link relation of the indoor branch equipment is highlighted.
By adopting the technical scheme, the figure of the AutoCAD consists of 6 basic figure elements, including points, straight lines, auxiliary lines, spline curves, multiple line segments and layers; selecting a latest AutoCAD indoor coverage design drawing provided by a group design institute in a room construction design stage, and checking the integrity of the drawing information; monitoring the handshake files through an AutoCAD drawing analysis program, carrying out DWG drawing data analysis, and generating corresponding number files; then, carrying out room division model matching on the analyzed data, warehousing the data, and carrying out topology presentation at the front end; the method based on the CAD drawing data extraction room branch link topological relation converts data generated by software with strong speciality, such as CAD, into pictures JSON with strong applicability and can be applied to more scenes, and the filtering and screening rules can be modified so as to screen and match more types of data; the consumption of matching is greatly reduced and the accuracy of successful matching is enhanced after the data type of the user is generated; the problems that the efficiency of manually inputting the topological structure is low and errors are easy to occur are solved, and the method is more visual and convenient; and the extracted room branch link data structure is clear and definite, so that the data operation at the later stage is facilitated.
As a preferred technical solution of the present invention, the room coverage design drawing in step S1 includes a plane drawing of an indoor distribution system, a system drawing of the indoor distribution system, and a topology drawing of the indoor distribution system, and each of the plane drawing, the system drawing, and the topology drawing includes drawing frame information, legend information, and drawing label information. The standard indoor coverage design drawing comprises an indoor distribution system plan, an indoor distribution system diagram and an indoor distribution system topological diagram, and each drawing comprises information such as a drawing frame, a legend and drawing labels.
As a preferred technical solution of the present invention, the step S2 specifically includes: logging in the intelligent room branch monitoring system, selecting an intelligent station, expanding a room branch station tree structure, clicking an upload button to upload a drawing, selecting a room branch coverage design drawing to be imported, and confirming uploading.
As a preferred technical solution of the present invention, the step S3 specifically includes: the intelligent branch monitoring system stores the branch coverage design drawing submitted by the user, generates a handshake file to the corresponding directory, monitors the handshake file through an AutoCAD drawing analysis program of the intelligent branch monitoring system, and reads the indoor coverage design drawing to extract the drawing information from the corresponding drawing directory after finding the corresponding handshake file.
As a preferred technical solution of the present invention, the step S4 specifically includes:
s41: drawing frame data matching is carried out by an AutoCAD drawing analysis program, the dwg file is analyzed and converted into a data type suitable for the dwg file based on an open-source CAD analysis technology,
s42: processing is carried out through an algorithm of a spatial graph, and when line data are generated, angle attributes are packaged for the data types of the lines, so that the data of the angles are adopted for matching, then a plurality of rectangular data are filtered and screened, a picture frame of a whole file possibly is screened and removed according to the proportion of the area of the picture frame to the total area, and the contained rectangular data are removed through the algorithm contained in the spatial graph data;
s43: and keeping the drawing frames of the original drawing of the data source, performing inclusion analysis on the data previously recorded in the memory according to each drawing frame, and matching each drawing frame data with the data previously recorded in the memory to generate the data inside each drawing frame.
As a preferred embodiment of the present invention, the legend information in the plane drawing frame in step S5 includes legend names, frame heights, frame widths, and paths for dividing the frame into a graph format; the indoor distribution equipment information comprises equipment types, equipment names and equipment position information, wherein the equipment types comprise power distributors, couplers, combiners and antennas; the device location information includes x-axis coordinates and y-axis coordinates.
As a preferred technical solution of the present invention, the step S6 further includes matching a mobile room network topology model of the smart monitoring room subsystem according to the corresponding room-to-device association relationship, generating the site floor and device coverage information through the mobile room network topology model, and storing the floor plan drawing and the point location information.
As a preferred technical solution of the present invention, in step S41, the dwg file is analyzed and converted into a self-applicable data type based on an open-source CAD analysis technology, that is, the coordinate data is converted into a point type and a single line type; in step S42, line data with angles of 0 ° and 90 ° are used for matching. Because the data volume is too large, the angle attribute is encapsulated for the data type of the line when the line data is generated, the data of the angle is adopted for matching, the line data with the angles of 0 degree and 90 degrees are matched, the data magnitude needing matching is greatly reduced, and if the line data has lines which can be connected together for recording, the lines are spliced into a rectangular graph.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: (1) the position information of the passive device and the topological link relation are extracted from the AutoCAD drawing, reliable data can be provided for visual topological link fault analysis, the defects that basic data are wrong and accurate positioning cannot be performed on topological faults due to manual input are overcome, and the existing data can be used for better display analysis in the future to play a greater value; (2) the method solves the problems of low efficiency and easy error of manual input of the topological structure, and is more visual and convenient; the extracted room branch link data structure is clear and definite, and the operation on the data at the later stage is convenient; (3) data generated by software with strong speciality, such as CAD, is converted into json which has stronger applicability and can be applied to more scenes, and rules for filtering and screening are modified so as to screen and match more types of data; the matching consumption is greatly reduced and the accuracy of matching success is enhanced by generating own data types.
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The technical scheme of the invention is further described by combining the accompanying drawings as follows:
FIG. 1 is a flow chart of a method for extracting room sub-link topological relations based on CAD drawing data according to the present invention;
FIG. 2 is a diagram of an original CAD drawing topological relation in an application embodiment of the method for extracting room sub-link topological relation based on CAD drawing data;
FIG. 3 is an enlarged view of one of the plan views in the original CAD drawing according to the embodiment of the present invention applied to the method for extracting the chamber-link topology relationship based on CAD drawing data;
FIG. 4 is an interface diagram of an intelligent branch monitoring system importing automatic CAD drawing function in the method for extracting branch link topological relation based on CAD drawing data according to the application embodiment of the invention;
FIG. 5 is one of the final generated plan views of the application embodiment of the method for extracting room sub-link topological relation based on CAD drawing data according to the present invention;
FIG. 6 shows json format data finally generated by an application embodiment of the method for extracting room branch link topological relation based on CAD drawing data;
FIG. 7 is a system floor overlay obtained by applying an embodiment of the method for extracting room sub-link topological relation based on CAD drawing data;
fig. 8 is a system room branch equipment topological graph obtained by applying the method for extracting room branch link topological relation based on CAD drawing data to the example of the 48 th building (high-rise building) in the biomedical industrial park of a certain city.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): as shown in fig. 1, the method for extracting a room sub-link topological relation based on CAD drawing data specifically includes the following steps:
s1 data collection: selecting a set of chamber coverage design drawings; the indoor coverage design drawing in the step S1 includes a plane drawing of an indoor distribution system, a system drawing of the indoor distribution system, and a topology drawing of the indoor distribution system, and each of the plane drawing, the system drawing, and the topology drawing includes drawing frame information, legend information, and drawing label information;
s2 uploading drawings: uploading an indoor coverage design drawing through an intelligent indoor sub-monitoring system; the step S2 specifically includes: logging in the intelligent room branch monitoring system, selecting an intelligent station, expanding a room branch station tree structure, clicking an upload button to upload a drawing, selecting a room branch coverage design drawing to be imported, and confirming uploading;
s3, drawing information extraction: the intelligent indoor partition monitoring system generates handshake files according to the indoor partition coverage design drawings uploaded in the step S2, and reads the indoor coverage design drawings after analysis and monitoring and performs drawing information extraction work; the step S3 specifically includes: the intelligent branch monitoring system stores the branch coverage design drawing submitted by the user, generates a handshake file to a corresponding directory, monitors the handshake file by an AutoCAD drawing analysis program of the intelligent branch monitoring system, and reads the branch coverage design drawing from the corresponding drawing directory to extract drawing information after finding the corresponding handshake file;
s4 frame data matching: the intelligent indoor distribution monitoring system analyzes the drawing information extracted in the step S3, and performs drawing frame data matching and data type conversion; the step S4 specifically includes: s41, carrying out drawing frame data matching by an AutoCAD drawing analysis program, analyzing the dwg file based on an open-source CAD analysis technology, and converting the dwg file into a self-applicable data type, namely converting coordinate data into a point type and a single line type;
s42, processing is carried out through an algorithm of a space graph, and when line data are generated, angle attributes are packaged for the data types of lines, so that the data of the angles are adopted for matching, namely the line data with the angles of 0 degree and 90 degrees are adopted for matching, then a plurality of rectangular data are filtered and screened, a picture frame possibly of the whole file is screened and removed through the proportion of the area of the picture frame to the total area, and the contained rectangular data are removed through the algorithm contained in the space graph data;
s43, keeping the drawing frames of the original drawing in the data source, analyzing the data recorded in the memory according to each drawing frame, and matching each drawing frame data with the data recorded in the memory, namely generating the data in each drawing frame;
s5 legend information extraction: classifying according to the legend information in each picture frame, extracting the legend information in the plane picture frame, and outputting json format texts to a specified directory by combining with the room division equipment information; then extracting the association relation of the room-based coverage floor system diagram devices, outputting the association relation text of each floor room-based device to a specified directory, generating an association handshake file and informing the intelligent room-based monitoring system of the completion of the analysis of the topological relation; the legend information in the plane drawing frame in the step S5 includes legend names, frame heights, frame widths, and paths for dividing the frame into a graph format; the indoor distribution equipment information comprises equipment types, equipment names and equipment position information, wherein the equipment types comprise power distributors, couplers, combiners and antennas; the device location information includes x-axis coordinates and y-axis coordinates;
s6 generating a plan view: the background service of the intelligent indoor distribution monitoring system monitors the association handshake file, reads the analyzed text data and picture data, traverses the indoor distribution equipment association relation text of the floor to generate an upper link and a lower link of the indoor distribution equipment, and extracts floor plane drawings and point location information of corresponding equipment from the indoor distribution equipment information text according to the equipment name; step S6 further includes matching a mobile room network topology model of the intelligent monitoring room subsystem according to the corresponding room equipment incidence relation, generating station floor and equipment coverage information through the mobile room network topology model, and storing floor plane drawings and point location information;
s7 hierarchical presentation: the front-end page of the intelligent indoor branch monitoring system acquires indoor branch topological data from the background to perform hierarchical presentation, and the function of tracing the link according to the equipment is realized, and the superior link relation of the indoor branch equipment is highlighted.
The application example is as follows: 38 parts of CAD drawings of a certain city of Zhejiang province are selected for testing by adopting the method for extracting the room-to-link topological relation based on the CAD drawing data, so that the stability and the accuracy of the method are measured.
(1) Data collection: CAD drawing data is provided by a construction implementation party and is more close to the actual use condition; as shown in fig. 2 and 3;
(2) uploading drawings: uploading an indoor coverage design drawing through an intelligent indoor sub-monitoring system; logging in the intelligent room branch monitoring system, selecting an intelligent station, expanding a room branch station tree structure, clicking an upload button to upload a drawing, selecting a room branch coverage design drawing to be imported, confirming uploading, and waiting for the software to generate result data; as shown in fig. 4;
(3) drawing information extraction: a drawing analysis program monitors the handshake files, and carries out DWG drawing data analysis to generate corresponding number files; the method specifically comprises the following steps: the intelligent room division monitoring system generates handshake files according to the room division coverage design drawings uploaded in the step (2), and reads the room coverage design drawings after analyzing and monitoring and extracts drawing information; the intelligent branch monitoring system stores the branch coverage design drawing submitted by the user, generates a handshake file to a corresponding directory, monitors the handshake file by an AutoCAD drawing analysis program of the intelligent branch monitoring system, and reads the branch coverage design drawing from the corresponding drawing directory to extract drawing information after finding the corresponding handshake file;
(4) matching frame data: the intelligent indoor distribution monitoring system analyzes the drawing information extracted in the step S3, and performs drawing frame data matching and data type conversion; the step S4 specifically includes:
41: carrying out drawing frame data matching by an AutoCAD drawing analysis program, analyzing the dwg file based on an open-source CAD analysis technology, and converting the dwg file into a self-applicable data type, namely converting coordinate data into a point type and a single line type;
42: processing is carried out through an algorithm of a space graph, and when line data are generated, angle attributes are packaged for the data types of lines, so that the data of the angles are adopted for matching, namely the line data with the angles of 0 degree and 90 degrees are adopted for matching, then a plurality of rectangular data are filtered and screened, a picture frame possibly of the whole file is screened and removed according to the proportion of the area of the picture frame to the total area, and the contained rectangular data are removed through an algorithm contained in the space graph data;
43: keeping the drawing frames of the original drawing of the data source, performing inclusion analysis on the data previously recorded in the memory according to each drawing frame, and matching each drawing frame data to the data previously recorded in the memory, namely generating the data inside each drawing frame;
(5) and (3) extracting legend information: classifying according to the legend information in each picture frame, extracting the legend information in the plane picture frame, and outputting json format texts to a specified directory by combining with the room division equipment information; then extracting the association relation of the room-based coverage floor system diagram devices, outputting the association relation text of each floor room-based device to a specified directory, generating an association handshake file and informing the intelligent room-based monitoring system of the completion of the analysis of the topological relation; the legend information in the plane drawing frame in step S5 includes legend names, frame heights, frame widths, and paths for dividing the frame into a graph format; the indoor distribution equipment information comprises equipment types, equipment names and equipment position information, wherein the equipment types comprise power distributors, couplers, combiners and antennas; the device location information includes x-axis coordinates and y-axis coordinates; as shown in fig. 5 and 6;
(6) generating a plan view: the background service of the intelligent indoor distribution monitoring system monitors the association handshake file, reads the analyzed text data and picture data, traverses the indoor distribution equipment association relation text of the floor to generate an upper link and a lower link of the indoor distribution equipment, and extracts floor plane drawings and point location information of corresponding equipment from the indoor distribution equipment information text according to the equipment name; step S6 further includes matching a mobile room network topology model of the intelligent monitoring room subsystem according to the corresponding room equipment incidence relation, generating station floor and equipment coverage information through the mobile room network topology model, and storing floor plane drawings and point location information;
(7) hierarchical presentation: the front-end page of the intelligent indoor branch monitoring system acquires indoor branch topological data from a background to perform hierarchical presentation, and realizes a function of tracing a link according to equipment, and highlights a superior link relation of the indoor branch equipment; as shown in fig. 7 and 8.
The evaluation results show that: when comparing the imported data with the exported data, it is found that the predicted data type is generated without omission and accurately.
Fig. 8 shows a system component topology diagram obtained by applying to a 48 th building (a high-rise building) in a biomedical industrial park of a certain city.
It is obvious to those skilled in the art that the present invention is not limited to the above embodiments, and it is within the scope of the present invention to adopt various insubstantial modifications of the method concept and technical scheme of the present invention, or to directly apply the concept and technical scheme of the present invention to other occasions without modification.
Claims (7)
1. A method for extracting room branch link topological relation based on CAD drawing data is characterized by comprising the following steps:
s1 data collection: selecting a set of chamber coverage design drawings;
s2 uploading drawings: uploading an indoor coverage design drawing through an intelligent indoor sub-monitoring system;
s3, drawing information extraction: the intelligent indoor partition monitoring system generates handshake files according to the indoor partition coverage design drawings uploaded in the step S2, and reads the indoor coverage design drawings after analysis and monitoring and performs drawing information extraction work;
s4 frame data matching: the intelligent indoor distribution monitoring system analyzes the drawing information extracted in the step S3, and performs drawing frame data matching and data type conversion;
s5 legend information extraction: classifying according to the legend information in each picture frame, extracting the legend information in the plane picture frame, and outputting json format texts to a specified directory by combining with the room division equipment information; then extracting the association relation of the room-based coverage floor system diagram devices, outputting the association relation text of each floor room-based device to a specified directory, generating an association handshake file and informing the intelligent room-based monitoring system of the completion of the analysis of the topological relation;
s6 generating a plan view: the background service of the intelligent indoor distribution monitoring system monitors the association handshake file, reads the analyzed text data and picture data, traverses the indoor distribution equipment association relation text of the floor to generate an upper link and a lower link of the indoor distribution equipment, and extracts floor plane drawings and point location information of corresponding equipment from the indoor distribution equipment information text according to the equipment name;
s7 hierarchical presentation: the front-end page of the intelligent indoor branch monitoring system acquires indoor branch topological data from a background to perform hierarchical presentation, and realizes a function of tracing a link according to equipment, and highlights a superior link relation of the indoor branch equipment;
the step S4 specifically includes:
s41: drawing frame data matching is carried out by an AutoCAD drawing analysis program, the dwg file is analyzed and converted into a data type suitable for the dwg file based on an open-source CAD analysis technology,
s42: processing is carried out through an algorithm of a spatial graph, and when line data are generated, angle attributes are packaged for the data types of the lines, so that the data of the angles are adopted for matching, then a plurality of rectangular data are filtered and screened, a picture frame of a whole file possibly is screened and removed according to the proportion of the area of the picture frame to the total area, and the contained rectangular data are removed through the algorithm contained in the spatial graph data;
s43: and keeping the drawing frames of the original drawing of the data source, performing inclusion analysis on the data previously recorded in the memory according to each drawing frame, and matching each drawing frame data with the data previously recorded in the memory to generate the data inside each drawing frame.
2. The method for extracting room-divided link topological relation based on CAD drawing data according to claim 1, wherein said room-divided overlay design drawing in step S1 includes a plan drawing of an indoor distribution system, a system drawing of an indoor distribution system, and a topology drawing of an indoor distribution system, each of said plan drawing, system drawing, and topology drawing includes drawing frame information, legend information, and drawing label information.
3. The method for extracting room-based sub-link topological relation based on CAD drawing data according to claim 2, wherein the step S2 specifically comprises: logging in the intelligent room branch monitoring system, selecting an intelligent station, expanding a room branch station tree structure, clicking an upload button to upload a drawing, selecting a room branch coverage design drawing to be imported, and confirming uploading.
4. The method for extracting room-based sub-link topological relation based on CAD drawing data according to claim 3, wherein said step S3 is specifically: the intelligent branch monitoring system stores the branch coverage design drawing submitted by the user, generates a handshake file to the corresponding directory, monitors the handshake file through an AutoCAD drawing analysis program of the intelligent branch monitoring system, and reads the indoor coverage design drawing to extract the drawing information from the corresponding drawing directory after finding the corresponding handshake file.
5. The method for extracting room-divided link topology relationship based on CAD drawing data according to claim 3, wherein the legend information in the plane drawing frame in step S5 includes legend names, frame height, frame width, and path for dividing the frame into graph format; the indoor distribution equipment information comprises equipment types, equipment names and equipment position information, wherein the equipment types comprise power distributors, couplers, combiners and antennas; the device location information includes x-axis coordinates and y-axis coordinates.
6. The method for extracting room sub-link topological relation based on CAD drawing data of claim 3, wherein said step S6 further includes matching mobile room sub-network topological structure model of intelligent monitoring room sub-system according to corresponding room sub-equipment incidence relation, generating station floor and equipment coverage information through mobile room sub-network topological structure model, and storing floor plan drawing and point location information.
7. The method for extracting room-based sub-link topological relation based on CAD drawing data according to claim 3, wherein in step S41, the dwg file is parsed and converted into its own applicable data type based on open-source CAD parsing technology, that is, coordinate data is converted into point type and single line type; in step S42, line data with angles of 0 ° and 90 ° are used for matching.
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| CN106874567A (en) * | 2017-01-17 | 2017-06-20 | 合肥工业大学 | A kind of WLAN project planning Visual Design Systems based on CAD diagram shape |
| CN108809445B (en) * | 2017-04-27 | 2021-07-27 | 中国移动通信集团湖北有限公司 | Acceptance method and device for indoor coverage antenna |
| CN109740372A (en) * | 2018-12-17 | 2019-05-10 | 广州天越电子科技有限公司 | Based on the system and method for realizing that conceptual schematic drawing paper is divided in automatic audit room on WEB |
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2020
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