KR20020011677A - Drawing system and method for auto modeling conversion process program from 2-dimensional pipe laying diagrams to 3-dimensional cad data - Google Patents

Abstract

PURPOSE: A method for designing using a program for automatically transforming and modeling a 2-dimension piping engineering drawing to 3-dimension CAD data is provided to improve drawing quality and reduce engineering cost and a term of works. CONSTITUTION: A method for designing using a program for automatically transforming and modeling a 2-dimension piping engineering drawing to 3-dimension CAD data uses a program converting to CAD environment for recognizing graphic data of the 2-dimension piping engineering drawing as symbol data. The program includes programming for establishing an environment for recognizing the piping engineering drawing as drawing data in autoCAD user work environment to transform to an intelligent 3-dimension CAD file, programming for generating a neutral file for the piping drawing and a graphic file to extract plane information of the piping, programming for recognizing only items to be transformed to the 3-dimension CAD among fundamental information such as building structure, piping route information, equipment nozzle information and piping option, and programming for recognizing only data required for 3-dimension modeling.

Description

DRAWING SYSTEM AND METHOD FOR AUTO MODELING CONVERSION PROCESS PROGRAM FROM 2-DIMENSIONAL PIPE LAYING DIAGRAMS TO 3-DIMENSIONAL CAD DATA}

The present invention relates to a design method by automatically converting a 2D piping engineering drawing into a 3D CAD environment and by an automatic model manufacturing program, and using a piping plan drawing created in an AutoCAD or Microstation environment by an existing engineering company. The program that automatically converts drawings to 3D CAD dramatically improves the efficiency of the work by switching to 3D CAD and dramatically improves the quality of drawings by directly switching from 2D drawings to 3D drawings. It's about things.

Development environments for this include the Windows NT 4.0, Windows 98 operating systems and CAD engines with AutoCAD R14 or AutoCAD 2000, PDMS. The programming languages include user interfaces, AutoLISP, PML, and Visual Basic. Database connection devices include AutoLISP and PML. As a main scope of work, it is possible to construct CAD environment and user interface device that can intelligently make piping plan drawings, develop programs to extract PDMS input data, and create a user environment that is convenient to modify / complement the extracted data in a more perfect form. In particular, it develops the function to connect and classify by the same line number and type extracted by each drawing and the 3D CAD conversion device program to PDMS.

In the conventional method, most engineering firms currently create a plumbing drawing in an AutoCAD or Microstation environment, and then refer to it to model the model in a three-dimensional CAD environment. There is a problem that needs to be redone, and since automation from 2D CAD to 3D CAD has not been performed, it has taken a great deal of time to verify the 3D drawing itself.

In addition, two-dimensional CAD software (S / W) is impossible to check interferences, stress analysis, mechanical analysis, and does not examine the shape, does not support the review function of construction in virtual space before construction, and transfer of data. Due to its narrow width, it is not limited to documents that communicate the designer in the presentation, and because pipe routing information is expressed in two dimensions in AutoCAD, designers cannot reuse it as three-dimensional data. It can be distorted differently from the intention of the intention, and error occurs frequently in communication, which entails enormous expenses for reconstruction in the field. Therefore, it is necessary to convert to 3D data, and to do so, additional information in the vertical position must be input. Due to the nature of engineering, the requirements of domestic and overseas customers are required to make three-dimensional design, and the air is getting shorter, and the reality is that there is an urgent situation to change the existing method.

Accordingly, the present invention has been made to solve the conventional problems as described above, the pipe (Pipe), elbow (Tee), Redussa that is basically included in the configuration of the piping system as a first step It is to develop basic program that only considers piping parts such as reducer and flange.

As a development item, a development environment is prepared first, and a user interface device, which performs the basics of computer-aided software engineering (CASE) for all cases, is developed, such as pipe, elbow, Build and apply basic libraries (Tee, Reducer, etc.), develop a program or routines that can be used by any computer user, develop data extraction programs, and modify extracted data. Develop user interface to perform complementary / confirmation, develop 3D CAD interface, create 3D CAD model, and reporter about the result.

However, control valve manifolds, skew lines, and valves, flanges, flanges, and joints are connected in the vertical position, or the bends and elbows are distinguished. If the method is ambiguous, the next step will be to develop a solution to the expected problem, such as blurring the distinction between tees, olets, and direct weld connections in the branch.

In addition, in order to solve the above problems, if the user needs to manually input the extracted data, the user's convenient environment and validation method should be supplemented in detail.

Especially in the case of PDMS, as the overall combination is very important in one pipe system together with the head / tail definition, there may be the possibility of fatal error when inserting the wrong or wrong item in the middle.

The second stage creates an environment in which the pipe standard parts excluded from the first stage can be processed.

That is, it is possible to process all the pipe standard parts included in the pipe design by establishing an environment that can handle the valve, gasket, band, oret smoothly.

The third step enables the processing of all items constituting the piping system such as piping special parts, parts consisting of symbols or codes such as drainage / exhaust, and control valve manifolds.

However, with regard to the third stage of development, it also involves creating a three-dimensional model directly in the PDMS environment rather than in the AutoCAD environment.

If the automatic conversion system of piping engineering drawings created in 2D CAD to 3D CAD is used, the domestic and overseas engineering work will increase and become larger due to the recent increase in oil prices. For all engineering firms designing plants, the transition to 3-D CAD will be more efficient and groundbreaking, improve the quality of drawings, and perform 3D CAD-related hardware or As the cost of the software is expected to increase enormously, considering the conditions of the engineering market, the present invention will be able to meet the demands of the market well by significantly lowering the engineering price and dramatically reducing the air. Can be strong.

[Fig. 1] is a flowchart showing the work of the, piping design according to the invention in a two-dimensional CAD to a three-dimensional CAD.

[Figure 2] is a functional flowchart for switching the two-dimensional CAD according to the present invention in a three-dimensional CAD.

[Figure 3] is a flow chart for working implements the piping plan drawing (Piping Study Drawing) in a three-dimensional CAD environment, in accordance with the present invention.

In order to achieve the above object, according to the first aspect of the present invention, the AutoCAD engineering drawings using a program that converts the graphic data of the two-dimensional piping engineering drawings into a CAD environment that recognizes the symbol data as AutoCAD data. A program step of constructing an environment for recognizing picture data of a drawing in a user's working environment and converting the drawing data into an intelligent 3D CAD file;

A program step of generating a neutral file for the pipe diagram, and generating a graphic file to be converted to three-dimensional to extract plane information of the pipe;

A program step of recognizing only items to be converted to 3D CAD among basic data such as building structure, piping route information, device nozzle information, piping specifications, etc .;

A program step of recognizing only data necessary for three-dimensional modeling by a combination of a plurality of two-dimensional CAD data; Characterized in that the design method by the program for recognizing the graphic data as symbol data to automatically convert the two-dimensional piping engineering drawings into three-dimensional symbol data (Symbol Data) comprising a.

According to a second aspect of the present invention, there is provided a program step of converting a recognized symbol data into a file and converting the recognized symbol data into a complete three-dimensional CAD data through data complementary work on the recognized and missing or missing parts. Also, it features a design method through a program for constructing a data file for automatically converting 2D piping engineering drawings into 3D CAD data.

According to a third aspect of the present invention, a program step of extracting pipe route information includes pipe, elbow, tee, and reducer, which are basic data included in constructing a pipe system. It includes a program step of extracting the basic data of the parts included along the piping route, and the basic standard parts required for the automatic conversion of 2D piping engineering drawings into 3D CAD data in the order of piping route and data. It is characterized by the design method.

According to a fourth aspect of the present invention, the program step of extracting the specification information of each piping part, pipe, elbow, tee, reducer (reducer) included in the configuration of the piping system Basic necessary for pipe route including program step that recognizes shape and size when building basic specification information as database and applying it to 3D CAD data and recognizes each specification to be correct material aggregation for later material aggregation. It features a design method by a program that automatically converts the specification of parts into 3D CAD data.

According to a fifth aspect of the present invention, the program step of providing a convenient application function in extracting and recognizing the pipe route information, the user can conveniently manage the extracted data by extracting the pipe route information from the pipe engineering drawings Characterized in that the design method by a program for automatically converting the two-dimensional piping engineering drawings into three-dimensional CAD data and the model production, including a program step for controlling the connecting device.

According to the sixth aspect of the present invention, the convenient model data change program step is that the piping engineering drawings are frequently changed by the surrounding conditions, and it is very difficult to directly change the three-dimensional model data, but by modifying the two-dimensional data It features a design method by a program that automatically converts piping engineering drawings into 3D CAD data and makes models, including program steps that simply allow the 3D model to be changed.

According to a seventh aspect of the present invention, the piping standard part information data construction program step includes a program step of constructing specification information on standard parts for various piping specifications into a standard parts database and applying it to 3D CAD data. It features a design method by a program that automatically converts dimensional piping engineering drawings into 3D CAD data and makes models.

According to an eighth aspect of the present invention, the three-dimensional CAD conversion program step is an assembly, such as drain / vent, control valve manifold, control valve, safety valve ( Three-dimensional piping engineering drawings, including program steps for constructing instrument items including data such as safety valves, orifices, etc., into 3D CAD data, and applying them to 3D CAD data. It features a design method by a program for automatic conversion to CAD data and model production.

According to a ninth aspect of the present invention, a model production program step by a batch operation in three-dimensional modeling is a program for making two-dimensional data into a file recognized by 3D CAD and loading it into a three-dimensional recognition program at once. step;

A program step of recognizing a plurality of 2D CAD data in a 3D CAD program;

A program step of confirming the specification, size, shape of the piping parts, and the shape, size, and position of the device from the file data and performing three-dimensional modeling of the pipe by a batch operation method;

A program step of controlling input / output data of a display medium which outputs 3D CAD data recognition contents in a drawing; Characterized in that the design method by a program for automatically converting and modeling two-dimensional piping engineering drawings into three-dimensional CAD data, including.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

[Fig. 1] is analyzed (S20) that can transform applied to a two-dimensional CAD drawings into a flow chart showing a conventional working methods to change the pipes designed in a two-dimensional CAD to a three-dimensional CAD (S10) by checking (S30) If it is not correct, the engineer reviewed and completed the construction structure information (S40), equipment nozzle information (S50), piping material and route information (S60), the shape, size, position (S55) of the equipment, piping After completing the 3D model, drawing the piping drawing (Isometric Drawing), totaling the piping material (S65), and completing the client's approval (S70), the 3D CAD model is completed (S80).

[2] it will be referred to, such as a two-dimensional CAD as a three-dimensional work flow diagram for switching to the CAD and creates a view name and number in a two-dimensional CAD drawing 10, and mark the boundary figure, apparatus and instrument base. Through this, the pipe route, pipe parts, equipment nozzle chart, dimensions and pipe numbers indicated in the pipe diagram become basic data for drawing recognition.

Generating symbol data for the equipment nozzle chart, pipe fittings, connecting parts, pipe grades, other special parts, etc. in the drawing recognition 20;

Generating an neutral file for symbol data and generating a file capable of converting to 3D, and modifying and supplementing a file if necessary;

Importing a file from an intermediate file and recognizing it as data and completing the 3D CAD recognition file of the data recognition contents; Through the identification of piping specifications, piping parts size, piping parts shape, building structure, device shape, device size, device location, device nozzle data, etc., the piping production and piping materials are counted. Complete 50).

However, in the case of a simple file that does not require an intermediate file, the drawing can be directly passed to the step of checking data 40 from the recognition 20.

[Figure 3] is extracted (120) the data to the recognition screen operation 110 a plan diagram 100 of the pipe on the user's work environment in AutoCAD as actual work flow diagram for implementing the drawing pipe base in a three-dimensional CAD environment And make this a 3D CAD environment 130.

As described above, according to the present invention, in terms of engineering performance air, the conventional method proceeds with about 6 months of execution air, but this method is completed within about 1 to 1.5 months, so that the matters to be considered in the design should be sufficiently considered in the previous process. So that a more complete design is possible.

In terms of labor cost, the existing method has a very high labor cost by the law of supply / demand due to the shortage of skilled 3D CAD specialists. Labor costs can be significantly lowered because only the training can be used to perform this task.

In terms of fixed costs, the traditional method requires the installation of additional 3D CAD-related hardware (H / W) and software (S / W) as the workload increases. This is a tremendous burden, but by doing most of the work in two-dimensional CAD, the cost of hardware (H / W) and software (S / W) can be reduced to less than one tenth.

In terms of system operation, only one person should be assigned to one set of three-dimensional CAD system. However, this method collects batch files from several two-dimensional CAD systems and collects three-dimensional CAD at once. System operation can be carried out very efficiently.

In terms of input M / H, the conventional method requires about 4 hours for one-line modeling, but this method requires about 20 minutes of M / H because only vertical information is input on a two-dimensional drawing.

In terms of work efficiency, the existing method requires two-dimensional drawings, engineers must calculate dimensions and key-in text or information, but this method automatically recognizes data on two-dimensional drawings and needs them. You only need to click with the mouse on the location, and you only need to input additional vertical route information that is not marked on the plane, so it is very efficient and accurate.

In terms of OUTSOURCING, the existing method should be done by a person who has been trained in 3D CAD for a considerable period of time, but this method is only required by the existing 2D CAD operator.

Claims (9)

Using the program that converts the graphic data of the 2D piping engineering drawing into a CAD environment recognized as symbol data, A program step of constructing an environment for converting the piping engineering drawing into an intelligent 3D CAD file by recognizing the drawing data of the drawing in an AutoCAD user environment; A program step of generating a neutral file for the pipe diagram, and generating a graphic file to be converted to three-dimensional to extract plane information of the pipe; A furnace program step of recognizing only items to be converted to 3D CAD among basic data such as building structure, piping route information, device nozzle information, piping specifications, etc .; A program step of recognizing only data necessary for three-dimensional modeling by a combination of a plurality of two-dimensional CAD data; Designed by a program for automatically converting and modeling two-dimensional piping engineering drawings into three-dimensional CAD data comprising a. The method of claim 1, The program step of converting the recognized symbol data into a file may include a program step of converting the recognized symbol data into complete three-dimensional CAD data by supplementing data on the recognized and missing or missing parts of the program. , 2D piping engineering drawings into 3D CAD data automatically converting and modeling program design method. The method of claim 1, The program step of extracting the pipe route information may include the basic data of parts including pipe, elbow, tee, and reducer, which are basic data included in constructing the piping system. And a program step for extracting according to the step of automatically designing and converting a two-dimensional piping engineering drawing into three-dimensional CAD data. The method of claim 1, The program step of extracting the specification information of each piping component includes the basic specification information of pipes, elbows, tees, and reducers included in the piping system. And a program step of recognizing the shape or size when applied as 3D CAD data and recognizing each specification so as to be the correct material aggregation in the later material aggregation. Designing program by automatic conversion and model production. The method of claim 1, The program step that provides a convenient application function in extracting and recognizing pipe route information is an interface for extracting pipe route information from a pipe engineering drawing to conveniently manage the extracted data. And a program step of automatically converting the two-dimensional piping engineering drawings into three-dimensional CAD data and producing a model. The method of claim 1, The convenient model data change program step includes a program step that allows the three-dimensional model to be simply changed by modifying the two-dimensional data as the piping engineering drawing is changed by the surrounding conditions. Designing program by automatic conversion and model production into 3D CAD data. The method of claim 1, The piping standard part information data construction program step includes a program step of constructing specification information on standard parts for various piping specifications into a standard parts database and applying them to 3D CAD data. Design method by the program that automatically converts to 3D CAD data and makes a model. The method of claim 1, In the 3D CAD conversion program step, 3D CAD is constructed by constructing an instrument item including data such as a control valve, a safety valve, an orifice, and a file information assembly. And a program step of automatically converting a two-dimensional piping engineering drawing into three-dimensional CAD data and producing a model. The method of claim 1, In the three-dimensional modeling, a model production program step by a batch operation may include: a program step of converting two-dimensional data into a file recognized by 3D CAD and importing it into a three-dimensional recognition program at once; A program step of recognizing a plurality of 2D CAD data in a 3D CAD program; A program step of confirming the specification, size, shape of the piping parts and the shape, size, and position of the device from the file data to perform three-dimensional modeling of the pipe by a batch operation method; A program step of controlling input / output data of a display medium which outputs 3D CAD data recognition contents in a drawing; Designed by a program for automatically converting and modeling two-dimensional piping engineering drawings into three-dimensional CAD data comprising a.