KR100309582B1 - System And Method For Estimate Bill Of Materials Using Two Dimensional CAD Interface - Google Patents

Abstract

The present invention analyzes the items described in the design drawings created by the two-dimensional CAD program and extracts the positional information and the shape information and the material information for each item, thereby automatically calculating the overall quantity and unit cost. A volume calculation system using an interface and a method thereof are provided.

To this end, according to the present invention, in the computer terminal equipped with a CAD system for creating a design item for a variety of construction, civil engineering, machinery, and facilities in a CAD drawing, the position data and design specifications and shapes of the various design items A project information storage means storing project information including data, a material / unit price storage means storing material information and unit price information of part elements included in a CAD drawing for design items of various projects; By referring to the project information of the project information storage means, the material information and the unit price information of the material / unit price storage means, the position information, the shape information and the material information for the part element included in the CAD drawing created by the CAD system By analyzing, the quantity calculation processing means for calculating the quantity and unit price of the whole object Characterized in that configured.

Description

System and Method for Estimate Bill of Materials Using Two Dimensional CAD Interface}

The present invention relates to a quantity calculation system and a method using a two-dimensional CAD interface, and more specifically, to separate the overall quantity and unit price information for the items described in the design drawings created in two or three dimensions through the CAD program The present invention relates to a quantity calculation system and a method using a two-dimensional CAD interface for automatically calculating and providing without manual or conversion work.

In general, in order to construct, expand, or reconstruct a structure required for the construction, manufacture, or production of various buildings, structures, or appliances, design drawings such as structural drawings, architectural drawings, and facility drawings are required as the top priority. CAD programs built on computer systems are used to create design drawings.

In addition, the worker in charge of construction or manufacturing analyzes the information contained in the multiple design drawings for a long time based on the design drawings created using the CAD program, and calculates the quantity and unit price for each material to make a statement. It is supposed to be. That is, in the related art, a worker uses a blueprint of a two-dimensional drawing to reinterpret and input a calculation basis by hand into a calculator-oriented program.

However, such a manual method requires a worker to check and compare the material information and numerical information on the items listed in the multiple drawings, and to calculate the quantity for each part and to calculate the unit price for the quantity. It takes a long time to measure and input the design structure or shape part of the drawing by hand manually, and if an operator inadvertently makes an error during the manual process, it is limited to objective verification and correction between design work and construction work. There is a problem that you have to have.

On the other hand, conventionally, as a way to solve the problem of the manual work, the blueprint drawings are placed on the digitizer to take the numerical information of the two-dimensional drawings, input or in the form of a spread sheet (Spread Sheet) to calculate the numerical value of the material It may also adopt a way of doing so.

Also, in recent years, with the development of three-dimensional design and display technology, a CAD program is converted into a three-dimensional entity with an entity of a drawing created in two dimensions through a CAD program, or a three-dimensional CAD program from the beginning. A method of calculating quantities after creating a three-dimensional drawing using a three-dimensional entity has been developed and applied.

However, in the case of the conventional quantity calculation method, by calculating the quantity based on the details of the design drawings, it is difficult for the workers in the construction site or the process and cost managers to accurately grasp the location information for each part actually needed. There is a disadvantage in that reworking should be performed in a form that can be understood, and when a design change is made in the middle, there is a problem in that the comparative review and correction between each other are not easy.

As a result, in the quantity calculation method that depends on the manual work of the operator, if the design drawings are updated, it is difficult to find, modify, and change the corresponding parts, and thus, the manual work must be done again, resulting in huge waste of time and manpower. In the process of correction, the possibility of missing information and lack of uniformity will exist.

In addition, in the method of calculating the quantity using a three-dimensional design drawing, it is difficult to approach in terms of practical application that the function of inputting, modifying, and supplementing three-dimensional entities exclusively is implemented in three-dimensional CAD. Not only are there limitations to the user interface for professionally reproducing 3D CAD systems, but it is also very difficult for multiple operators to share relevant information or to combine work drawings that have been progressed individually. have.

On the other hand, despite the development of computers and electronic files that work with CAD programs for design drawings, there is no system for sharing and interpreting CAD design information created at higher levels. There is a problem that it is difficult to cooperate and cooperate in the design work because physical movement between departments is impossible.

Accordingly, the present invention has been made to solve the above problems, the purpose of which is to analyze the items described in the design drawings created by a two-dimensional CAD program to extract the location information and shape information and material information for each item Accordingly, the present invention provides a quantity calculation system using a two-dimensional CAD interface for automatically calculating the overall quantity and unit price.

Another object of the present invention is to automatically calculate the overall quantity and unit price by analyzing the items described in the design drawings created by the two-dimensional CAD program and extracting the location information and the shape information and material information for each item. The present invention provides a method for calculating quantities using a two-dimensional CAD interface.

1 is a block diagram showing the configuration of a quantity calculation system using a two-dimensional CAD interface according to the present invention,

2 is a diagram schematically showing a code system provided for calculating a quantity of a CAD drawing according to a preferred embodiment of the present invention;

3a to 3c are views showing an example in which the operation of calculating the position information and the shape information and the material information for each part element of the item described in the CAD drawing according to the preferred embodiment of the present invention applied to the finishing quantity calculation function,

4 is a view showing an example of the quantity and unit price statement calculated according to the execution of the finished quantity calculation function shown in Figures 3a to 3c,

5A and 5B are flowcharts for explaining a method for calculating quantities using a two-dimensional CAD interface according to the present invention;

6 is a flowchart for explaining an operation for inputting and modifying a height value of an item described in a two-dimensional CAD drawing according to a preferred embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

10: CAD system, 20: CAD drawing data,

30: design project information database,

40: material / unit price database, 50: quantity calculation engine,

60: real entity input block, 70: shape information processing and complementary block,

80: material selection and connection block, 90: material quantity data calculation block,

100: computer body, 200: keyboard,

200A: keyboard interface, 300: position coordinate input device,

300A: Position coordinate interface, 400: Display monitor.

According to an embodiment of the present invention to achieve the above object, in the computer terminal equipped with a CAD system for creating a design item for a variety of construction, civil engineering, machinery, and facilities in a CAD drawing, various design items Project information storage means including project data including position data, design specification and shape data for the project, and material information and unit price information about the site elements included in CAD drawings for various project design items. The part element included in the CAD drawing created by the CAD system with reference to the material / unit price storing means, the project information of the project information storing means, and the material information and unit price information of the material / unit price storing means. By analyzing the location information, shape information and material information, the quantity and unit price of the entire object can be calculated. A quantity calculation system using a two-dimensional CAD interface composed of quantity calculation processing means is provided.

In addition, in order to achieve the above object, according to another embodiment of the present invention, in the method for calculating the quantity and unit price for the material contained in the CAD drawing created through the CAD system, the project corresponding to the CAD drawing Computing location information for each building, floor, and room included in the CAD drawing by referring to the information, and modifying and supplementing entities in the drawing, and for each building, floor, and room for which the location information is calculated. Computing the shape information for each object for the element, and connecting the position information and the shape information of the object, by selecting the overall composite material code for the material included in the part element and the composite material code for the position information and the shape information Integrating as the closing number, and calculating the quantity and unit price for each part, material by reference to the selected material code The luer volume calculation method using the two-dimensional CAD interface is provided Jin.

According to the present invention configured as described above, the location information including the real name and the real code is extracted from the CAD drawing created in the two-dimensional or three-dimensional manner, and each of the same and floor by line data, surface data and location data in the drawing. Completion of the shape information by calculating the area and volume code for each part of the room, that is, for each room, and by automatically linking the material code to the object for each part of the room, the material quantity and unit price are automatically calculated by the material code. As a result, the total quantity and unit cost of the design items included in the CAD drawing can be accurately and quickly calculated without a separate manual work by an operator.

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

That is, Figure 1 is a block diagram showing the configuration of a quantity calculation system using a two-dimensional CAD interface according to the present invention.

As shown in Figure 1, the system according to the present invention is built a two-dimensional or three-dimensional CAD program to create a design drawing two-dimensional or three-dimensional, by analyzing the two-dimensional or three-dimensional CAD drawing Computer body 100 for calculating material quantities and unit prices, keyboard 200 for creating two-dimensional or three-dimensional CAD drawings, and inputting variables necessary for calculating quantities and unit prices, two-dimensional or three-dimensional CAD drawings Position coordinate input device 300 for operation of program menu for preparing and calculating quantity and unit price, and for creating two-dimensional or three-dimensional CAD drawings, and for visually displaying the calculation process and result of material quantity and unit price. It is composed of a display monitor (400).

The computer main body 100 includes a CAD system 10 having a two-dimensional or three-dimensional CAD program for creating various design drawings two-dimensionally or three-dimensionally, and a hard disk created by the CAD system 10. CAD drawing data 20 stored in a storage device such as a drive, a design project information database 30 in which various design project information for the CAD drawing is stored, material codes for materials described in a design drawing of a predetermined project, and For each part described in the CAD drawing by referring to the data stored in the design / project data database 30 and the material / unit price database 40, and the image / calculation information and the unit price information. It is composed of a quantity calculation processing engine 50 for calculating the quantity and unit price of the object.

The CAD system 10 is equipped with a CAD program and a CAD library for creating design drawings in two or three dimensions for construction and production items of various constructions, civil engineering, etc., and are commonly used as CAD programs. 'Autocad 14 version' or 'Autocad 2000' are generally applied, and a 3rd party program running on the CAD program is applied.

The design project information database 30 stores information data included in various projects planned for construction and manufacturing of various construction, civil engineering, facilities, and equipment design items. General information related to the location information, design specification, construction shape information, etc. is extensively arranged, and the operator can set data and parameter values to be applied in advance according to a predetermined project.

In addition, the material / unit price database 40 is a composite material code as a separate material code and finish number for all materials for the design items of the various construction, civil engineering, equipment, fixtures that can be written in the CAD drawing data 20 It stores, the unit price information about each material, and the image which shows the color and texture of the material about the material for each site | part, and calculation formula information are stored, respectively.

Here, the material / unit price database 40 includes not only the standard data including the composite material code and the unit price information set according to a predetermined project, but also the heterogeneous data present in the CAD drawing data 20. Material code and unit price information can be set.

The quantity calculation processing engine 50 stores project information stored in the design project information database 30 for design items included in various construction, civil engineering, machinery, facilities, and fixtures created through the CAD drawing data 20. Calculate the location information for each part and area with reference to the length and area of each part or area having location information by referring to the code information of the line data and the surface data stored in the material / unit price database 40. The shape information is extracted by calculating the height, the volume, and the material quantity and the unit price of the building element (BE) for each object calculated based on the shape information.

Here, the quantity calculation processing engine 50 is a real code entity input block 60, shape information processing and complementary block 70, material selection and connection block 80, and material quantity extraction and complementary block 90 The actual code entity input block 60 may be configured by referring to the location information, the design specification, and the construction shape information included in the project information of the design project information database 30. The name and name code of each part and area are summarized, and the parts which are not collectively in the entities of each drawing are modified and supplemented to extract an accurate shape.

For example, when the CAD drawing data 20 includes a design drawing of a building such as an apartment, the real code entity input block 60 may design the CAD drawing data 20 based on the project information. By analyzing and assigning a room name and room number code for each room and automatically arranging the location information, the height value is applied as a default value, or inputted, or keyboard 200 The height value can be corrected and inputted by the user input using 30).

In the quantity calculation processing engine 50, in the shape information processing and complementary block 70, in order to automatically recognize a closed curve surrounding each yarn in the CAD drawing data 20, the actual division lines using dots and lines for each yarn. When the real compartment reference line is completed, the intersection point of the real compartment reference line is automatically recognized based on the reference point coordinates of the real name code to form a real compartment closed curve. In this case, if it is difficult to create a real block reference line, a closed curve may be input by manually designating a corresponding vertex of the real block line.

In addition, the material selection and connection block 80 receives the real name and real number code and the actual compartment closed curve information of the design drawing calculated from the shape information processing and complementary block 70 of the design project information database 30 With reference to the project information and the code information of the composite material and the unit price of the material / unit price database 40, the handle value for the poly line (PLine) entity of the actual block closed curve is calculated for each item and area. (For example, in case of building), the location and shape of each room can be updated by passing it to the Extended Data (X Data) of the real name code entity for the BE element for each object located in the space. It can be linked to a single piece of information.

Here, when the CAD drawing data 20 is a calculation of the finished quantity including a design drawing of a building such as an apartment, a detached house, or an office, for example, the object selection to which the material code is connected in the material selection and connection block 80 The part elements are divided into interior and exterior finishes, windows, walls, and framework finishes. The interior finish includes floors, floorboards, walls, ceilings, etc., and the exterior wall finishes include exterior walls and roofs. The windows and doors include windows, window frames, iron goods, and the like. The walls include interior and exterior walls, masonry, insulation, and the like, and the framing finish includes objects such as foundation columns, beams, slabs, retaining walls, and stairs. The shape is extracted to calculate the quantity of concrete, formwork and rebar.

In addition, in the quantity calculation processing engine 50, the material quantity extraction and complementary block 90 refers to the project information from the design project information database 30, that is, the position information and the shape information of the drawing, and the material With reference to the material information and unit price information from the unit price database 40, the material quantity and unit price data for the material code connected by the material selection and the connection block 80 are finally calculated to have shape information for every material. By completing the database, a quantity statement for the quantity and unit price is generated.

In the figure, the computer main body 100 transmits the key input signal and the coordinate input signal respectively inputted by the operation of the keyboard 200 and the position coordinate input device 300 to the CAD system 10 and the quantity calculation processing engine. The keyboard interface 200A and the position coordinate interface 300A, which respectively perform an interface operation for applying to the bar, are configured, and the keyboard interface 200A and the position coordinate interface 300A are the keyboard 200. And a CAD drawing in the CAD system 10 according to a signal input by the operation of the position coordinate input device 300 and included in the CAD drawing data 20 in the quantity calculation processing engine 50. You can enter height information for.

Here, in the quantity calculation processing engine 50, when height information is input by the keyboard 200 and the position coordinate input device 30, the CAD drawing data 20 described as a project is based on the height information. The height of each unit and area unit is modified and supplemented, and even if a code for each material is assigned, a material code having a modified height can be connected.

2 is a diagram schematically illustrating a code system provided for calculating a quantity of a CAD drawing according to a preferred embodiment of the present invention.

As shown in FIG. 2, according to the present invention, a project code CD1 of a design drawing included in the CAD drawing data 20 is included in a real code entity input block 60 of the quantity calculation processing engine 50. If given, the project code (CD1) is given a name and code (CD2) (ie, real name and real number code) for a plurality of room, floor, room information contained in a single item.

On the other hand, the material selection and connection block 80 is a complex for the object belonging to each real name and the real number code (CD2) based on the real block closed curve data extracted from the shape information processing and complementary block 70 Compute the shape information (CD3) by calculating the material data and calculate the area and volume, and connect the material codes to the materials included in the shape information (CD3) by passing the handle value of the actual compartment closed curve entity to the real code. The volume information about the object for each site element, that is, the finished quantity information (CD4), the skeleton quantity information (CD5) and the electrical quantity information (CD6) (or civil engineering quantity information, equipment quantity information, landscape quantity information) is calculated. .

Here, when the project code CD1 is a code assigned as a building such as an apartment or a business building, the finishing quantity information CD4 includes a plurality of materials for finishing materials such as walls, windows, stairs, and miscellaneous construction. Code (CD4-A) is included, the frame quantity information (CD5) includes a plurality of shape and position codes (CD5-A) for the frame member, such as foundation, column, beam, slab, retaining wall, The electric quantity information CD6 includes a plurality of material codes CD6-A for electric materials such as lighting lamps and electric wires. In addition, when civil engineering quantity information, facility quantity information, or landscaping quantity information is applied, code information for each corresponding object is included.

In addition, in the state in which the project code CD1 is assigned, the process of extracting the real compartment closed curve and calculating the real name and the real number code CD2 is as shown in FIG. 3A.

As shown in FIG. 3A, the real code entity input block 60 converts a real code 108 by real name and real number conversion and real name and real number autoranging included in the CAD drawing data 20. By extracting and calculating the location information, a height value such as 'H = 2800' is input by a user input by the keyboard 200 or the position coordinate input device 300, whereby the real code 108 is For example, a real name such as 'office' and a height value such as '280' are designated.

In addition, the shape information processing and complementary block 70 analyzes the point information and the line information included in the CAD drawing data 20 to determine the reference line 102 connecting each point and line. Each yarn 106 is made, and the actual compartment closed curve 104 is automatically formed for each yarn 106 with the reference line 102 as a starting point.

Accordingly, as shown in FIG. 3B, in a state in which the actual compartment closed curve is formed for each yarn 106, the yarn reference 108 serves as a center point of each yarn 106, and thus the actual compartment is formed, thereby completing the shape information. do.

Next, the process of connecting the handle value of the actual compartment closed curve entity to the extended data (X Data) in the state in which the material reference 108 is assigned to each thread in the material selection and connection block 80 is illustrated in FIG. 3C. As shown.

As shown in FIG. 3C, in the material selection and connection block 80, based on the information stored in the material / unit price database 40, the polyline entity of the actual compartment closed curve generated for each yarn 106 is used. By passing the handle value to the extended data (X Data) of the real name code entity, a composite material code (for example, 'F057') representing each material code of the floor, the baseboard, the wall, and the ceiling including each chamber 106 is obtained. It is connected to the seal 108.

For example, when the material code of the wall is 'W001', the material code of the baseboard is 'B001', the material code of the floor is 'F001', and the material code of the ceiling is 'C001'. The composite material code can be extracted in the form of 'W001 + B001 + F001 + C001 = F057' and delivered as a closing number.

On the other hand, an example of the entity data for each room stored in the material / unit price database 40 by the quantity calculation processing engine 50 is as shown in FIG.

As shown in FIG. 4, when the real code entity input block 60 converts or automatically cleans up the real name and real number for the CAD drawing data 20, and the height value is defined by a user input. In the entity data, items of 1 real name, 2 real numbers, 7 ceiling heights, 8 real symbol xy coordinates (ie, absolute coordinates), and 9 real symbol xy coordinates (ie, state coordinates) are stored in the database.

In addition, by passing the handle value of the polyline entity of the actual compartment closed curve by the material selection and connection block 80 to the extension data (X Data), the final composite material code, that is, the finishing number is calculated. In the entity data, 4 closing numbers and 12 actual segment polyline handle values are stored in a database.

On the other hand, the material quantity extraction and complementary block 90 automatically calculates the material information, that is, the quantity and unit price of the material connected by the material code, and prepares a quantity calculation statement for the quantity and unit price, such quantity The calculation is generated as shown in FIG.

As shown in FIG. 5, the quantity calculation sheet is calculated for each room to which real names and real codes are assigned in the project, and for each part element, actual shape and quadrature, product name, specification, unit and quantity, calculation formula, and unit price. Are displayed.

In other words, in the present invention as described above, the design information existing in the CAD drawing is already extracted, without going through a separate manual drawing of a simple drafted two-dimensional CAD drawing that most users work through the CAD system 10. In addition, the shortcomings are supplemented so that the user can input numerical values or formulas manually, and automatically analyze the shape and material information to extract the necessary numerical values and unit prices.

Of course, the conventional three-dimensional CAD-based volume calculation system has a function of automatically extracting the numerical value, but the two-dimensional and three-dimensional in that the user has an interface to fully input the information for the three-dimensional modeling It is a completely different system in terms of dimensions. It is easy to access because most of the workers are familiar with drawing drawings in 2D, and it is possible to input repetitive information (for example, height values) collectively, and its accessibility and usability with the system through 3D modeling It is a testament to the fact that it is absolutely superior in terms of compatibility, compatibility, and working time.

In addition, in the present invention, through the information stored in the design project information database 30 and the material / unit price database 40, the common and repetitive location information, construction materials and unit cost separately built and linked with the CAD entity, the worker It is possible to modify and change the design drawing in real time by arbitrary operation of the.

Next, an embodiment of the present invention made as described above will be described in detail with reference to the flowcharts of FIGS. 6A, 6B, and 6.

First, as shown in FIGS. 6A and 6B, in the CAD system 10 constituting the computer main body 100, two-dimensional images of a predetermined project are operated by user manipulation using the keyboard 200 and the position coordinate input device 30. The CAD drawing data 20 having a specific entity is created (step S10), and the CAD drawing data 20 is operated in the design project information database 30 by manipulation of the keyboard 200 and the position coordinate input device 300. Is determined (step S11), and the material / unit price database 40 is set with material code and unit price information for the material corresponding to the project (step S12).

In the state, the actual code entity input block 60 of the quantity calculation processing engine 50 gives a project code to the CAD drawing data 20 created by the CAD system 10, while designing the design project information database. Based on the positional information, the design specification, and the shape information according to the project information in (30), the entity in the design drawing is modified or supplemented to suit the related project (step S13).

When the modification and the supplementary work of the entity for the CAD drawing data 20 is completed, the real code entity input block 60 refers to the storage information of the design project information database 30 by reference to the design drawings by the same, floor, By dividing each room into real names and real number codes and converting them automatically, position information of the drawings included in the CAD drawing data 20 is calculated and height values are applied to the CAD drawing data 20. (Step S14).

On the other hand, each part element of the CAD drawing data 20 to which the real name and the real number code are assigned by the real code entity input block 60 is composed of line data, surface data, and location data. In the shape information processing and complementary block 70 of 50, the area data is calculated by setting the code of the plane data included in the drawing information for each room of the CAD drawing data 20 and drawing a polyline. (Step S15), the code of the line data is set and the polyline is drawn to calculate the data of the horizontal length and the vertical length (step S16), while the location data of the members included in the area data and the length data are calculated. The code is set (step S17).

That is, in the case where the CAD design drawing 20 created by the CAD system 10 is, for example, for the design of a building, the area data extracted from the shape information processing and the complementary block 70 is mainly used to partition each space. The floor, the baseboard, the wall, the ceiling, the staircase, etc. belong to this, and the length data mainly correspond to data having the property of a line such as a wall, a beam, and a retaining wall.

In addition, since the location data corresponds to a window, a door, a pillar, etc. of the building, and such a member is defined in a state stored in the form of a list in the design project information database 30, the location of the object You only need to extract the and positions.

Therefore, in the shape information processing and complementary block 70 of the quantity calculation processing engine 50, a reference line is generated based on area data and length data from CAD drawing data 20 in which real names and real number codes are defined for each room. In accordance with this, the entity of the actual compartment closed curve is formed to complete the shape information (step S18).

Meanwhile, the material selection and connection block 80 processes the shape information and complementary block based on the project information of the design project information database 30 and the material code and unit price information from the material / unit price database 40. By passing the handle value of the polyline of the real compartment closed curve formed by 70) from the real-name code entity data to the extended data (X Data), the position information of the yarn and the shape information are connected to one piece of information, The material for each part element is selected based on the shape information, and the material codes are linked. When the connection of the composite material codes formed by the combination of the material codes is completed, the material / unit price database 40 is completed. It is determined whether or not supplementation with the already defined data is necessary (step S20).

As a result of the determination, when the material selection and the connection block 80 determine that the structured data needs to be supplemented, the processes of steps S15, S16, and S18 are repeatedly performed, but the structured data needs to be supplemented. If it is not determined, it is determined whether there is heterogeneous data that is not already defined in the material / unit price database 40, that is, information of the composite material, among the object for each part element described in the CAD drawing data 20. (Step S21).

On the other hand, the material / unit price database 40 stores the release data for the composite material of various shapes that can exist in the project in a form that can be added to the three-dimensional shape by a user operation, and the unit price for each composite material The information is also stored (step S22).

In this state, when it is determined that there is release data in the material selection and connection block 80, the release data is partitioned by applying the three-dimensional shape information of the release stored in the material / unit price database 40, If addition is necessary, the work of manually inputting the material is performed (step S23).

On the other hand, the material selection and connection block 80 determines whether there is a portion in the design drawing that needs to be complementary to the release data (step S24), if the release data needs to be supplemented to repeat the process of step S23 do.

Subsequently, the material quantity extraction and complement block 90 of the quantity calculation processing engine 50 automatically extracts the quantity and unit price of the material based on the composite material code connected to each part and each material ( Step S25), the quantity and unit price of the material calculated as described above are generated in the form of a quantity calculation statement (step S26).

On the other hand, the quantity calculation generated by the material quantity extraction and complementary block 90 is output as a result screen on the display monitor 400, it is possible to print output through a separate printer device.

Next, with reference to the flowchart of FIG. 6, the operation of calculating the height information of the CAD design drawing during the overall operation relationship of the quantity calculation system will be described in detail.

First, the quantity calculation processing engine 50 loads the CAD drawing data 20 of the two-dimensional method created through the CAD system 10 (step S30), and the real code entity input block 60 design the project information. The line data of the loaded CAD drawing data 20 is automatically analyzed with reference to the project information of the database 30, and the location information is calculated by specifying real names and real number codes for each room, floor, and equilibrium (step S31). ).

In the above state, the real code entity input block 60 extracts a text data set for each part element to be encoded from the design drawing of the CAD drawing data 20 (step S32), and parts for each object. After dividing the element by code block, applying the default height value already defined in the material / unit price database 40 (step S33), the height value of the code block of the data set to which the height value is applied is applied. The application state is specified (step S34).

Next, the real code entity input block 60 performs a process of extracting a text value, a position coordinate, and a height for each code block to which the default height value is applied (step S35). With reference to the storing information of 40), an attribute is given for each extracted code block (step S36).

Meanwhile, in the real code entity input block 60, it is determined whether the code block to which the attribute is assigned is the end of the data set (step S37). If it is determined that it is not the last, the code block of the text data set is determined. After the default height value is applied (step S38), the process of steps S34 to S36 is repeated.

As a result of the determination, when it is determined that the last code block is processed in the text data set, the real code entity input block 60 may determine whether to partially modify the height of the code group having a different height value. (Step S39).

As a result of the determination, when there is a request to modify a height for a code group having a different height value, the real code entity input block 60 performs user manipulation of the keyboard 200 and the position coordinate input device 300. The height of the unit is corrected and input by the unit (step S40), and the code for correcting and supplementing the height is selected for each code block unit (step S42), and then the code block is applied by applying the corrected height information. The height is corrected and updated (step S42).

Next, in the real code entity input block 60, it is determined whether a code block for correcting the height exists (step S43), and if it is found that no code block for correcting the height exists, the height value is corrected and changed. The process ends.

Therefore, by performing the above steps, it is also possible to selectively collectively modify the partial group of the design drawing, so that the heights for all materials are immediately corrected, changed, and input.

In the present invention having the embodiments as described above, various modifications can be made without departing from the gist of the present invention without departing from the gist of the present invention. For example, in the present invention, a single keyboard 200 and Although the configuration for calculating the quantity and unit price of the two-dimensional CAD drawing in a single computer main body 100 connected to the position coordinate input device 30 and the display monitor 400 is limited, the two-dimensional CAD system and quantity calculation Of course, it is also possible to connect at least two computer terminals each equipped with a configuration of a processing engine through a LAN network to implement a multi-system capable of exchanging CAD drawings and exchanging quantity and unit price information.

As described above, according to the present invention, it is possible to automatically calculate the numerical information of the quantity of the CAD design drawing created by the existing CAD program, significantly reducing the work time and manpower while reducing data input work It can have a significant contribution to

In addition, it has the effect of eliminating errors caused by the manual reinterpretation of professional and complex design drawings, extracting more accurate and objective information, and converting two-dimensional CAD data into three-dimensional Instead of creating and supplementing the 3D CAD data directly, the existing 2D design drawing is used as it is, and the input is supplemented in a 2D way, so the collected basic data is easy to collect and the input method is simplified. Will have an effect.

In addition, the quantity calculation database applied to calculate numerical information of the design drawings can be shared and used by a plurality of workers, thereby improving the work efficiency, reducing the working time, and maintaining the objectivity. Have

Claims (9)

In a computer terminal equipped with a CAD system for creating design items for a variety of construction, civil engineering, machinery, and equipment by CAD drawing, A project information storage means for storing project information including position data and design specifications and shape data for various design items; Material / unit price storage means that contains the material information and unit price information for the site element included in the CAD drawing for the design items of various projects, By referring to the project information of the project information storage means, the material information and the unit price information of the material / unit price storage means, the position information, the shape information and the material information for the part element included in the CAD drawing created by the CAD system A quantity calculation system using a two-dimensional CAD interface, characterized by comprising a quantity calculation processing means for calculating the quantity and unit price of the entire object by analyzing. The method of claim 1, wherein the quantity calculation processing means extracts a real code having a name and a location code for each building part, floor, and room part of the CAD drawing by referring to the project information of the project information storing means. The apparatus for calculating and modifying and supplementing the entities of the CAD drawing, the apparatus for calculating the shape information for each dong, tier, and real part of the element, and the material included in each constituent element An apparatus for calculating a quantity using a two-dimensional CAD interface, comprising a device for selecting and connecting a composite material code of a material / unit price storage means, and a device for calculating an overall quantity and a unit price of the material. The apparatus of claim 2, wherein the height of each object calculated by the length data, the area data, and the location data is applied with a predetermined default height value. Quantity calculation system using CAD interface. The height information for each object calculated by the length data, the area data, and the location data is applied to the unit information arbitrarily input by the operator. Quantity calculation system using 2D CAD interface. The apparatus of claim 2, wherein the apparatus for calculating the shape information analyzes line data for part elements, floors, and room parts included in the CAD drawing, plane data, and location data for each object to which a real code is assigned. A quantity calculation system using a two-dimensional CAD interface, characterized in that the shape information forming a closed curve starting from the reference line to be partitioned is calculated. The apparatus of claim 5, wherein the apparatus for selecting and connecting the composite material code transfers the handle value of the polyline entity of the closed curve from the real-name code entity data to the extension data so that the position and shape of the object are linked with one piece of information. Quantity calculation system using a two-dimensional CAD interface, characterized in that. In the method for calculating the quantity and unit price of the material contained in the CAD drawing created through the CAD system, Calculating location information on each part of each building, floor, and room included in the CAD drawing by referring to the project information corresponding to the CAD drawing, and modifying and supplementing an entity of the drawing; Calculating shape information for each object for each part of each building, floor, and room where the location information is calculated, and connecting the location information and the shape information of the object; Selecting a composite material code for the material included in the part element and integrating the composite material code as the closing number for the location information and the shape information; A method of calculating a quantity using a two-dimensional CAD interface, comprising the step of calculating the quantity and unit price for each part and material with reference to the selected material code. The method of claim 7, wherein the calculating of the shape information for each object comprises: inputting a code of surface data included in the CAD drawing and performing a drawing to calculate area data; And performing a drawing for calculating the vertical length, inputting a code of the location data to calculate the quantity, and using the area data and the horizontal and vertical length data and the location data for each building, floor, and room parts. Comprising the step of calculating the shape information by generating a closed curve starting from the reference line for each object for the quantity calculation method using a two-dimensional CAD interface. The method of claim 8, wherein in the step of connecting the position information and the shape information of the object, the handle value of the polyline entity of the closed curve is transferred from the real-name code entity data to the extension data so that the position and the shape of the object are connected as one information. Quantity calculation method using a two-dimensional CAD interface, characterized in that consisting of.