KR101392566B1 - Quality managing method for construction material using reverse modeling and reconstruction determing method using reverse modeling - Google Patents

Abstract

A construction material quality management method using reverse modeling according to the present invention comprises the steps of scanning construction materials using a 3D laser scanner (500); enabling a computer processor device to generate a 3D model using scan data obtained through the 3D laser scanner (501); and enabling the computer processor device to compare by analyzing the 3D model with the 3D CAD model for construction materials. A method for determining the quality comprises the steps of extracting a 3D CAD model for the construction materials from a CAD database (502); merging the 3D model and the 3D CAD model (503); calculating a deviation between the 3D model and the 3D CAD model (504); and determining the quality of the construction materials according to whether the deviation exceeds a quality reference value (505).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction management method and a construction management method,

The following description relates to a method for managing quality of a building material using a 3D laser scanner and a computer device, or a method for determining whether a building member is re-operated.

Due to the nature of the construction site, the quality control of building materials is made by sampling inspection. The sample inspection is a method of selecting two or three samples from a bundle of building materials to conduct inspection, so that quality control of most materials not selected as a sample can not be performed.

Various studies are being conducted to more effectively perform material management. Korean Patent Laid-Open No. 10-2011-0107558 discloses a method of managing a material by attaching an RFID tag to the material.

Furthermore, despite the fact that the construction works are based on the architectural design drawings, the construction errors due to various conditions and environments of the construction site are frequently occurring. During the construction phase or after construction, a rework is performed to compensate for the construction error. In general, many studies are being carried out to reduce the construction error in the construction stage in order to reduce rework.

On the other hand, the inverse design technique is a technique for estimating the design method of a specific product or structure. Korean Patent Registration No. 10-0510889 discloses a method for extracting three-dimensional modeling data for design use from a product using an inverse design control device.

A selective sampling test eventually degrades the stability and quality of the building. In addition, it is necessary to be able to measure the construction error of the building member inevitably according to the design process or equipment aging in a timely manner by a simple method.

The technique described below intends to improve the quality of building products through quality control of building materials by accurately examining more objects than the conventional sample inspection to manage the quality of building materials themselves.

The technique described below is intended to predict the possibility of reworking in advance, to save wasted construction costs such as material costs and labor costs due to rework, and to prevent the extension of the air due to rework, thereby making the process management easier.

The solutions to the technical problems described below are not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

The method for controlling building material quality using the inverse design according to the present invention includes the steps of scanning a target building material by a 3D laser scanner, generating a 3D model using scan data acquired through a 3D laser scanner, And comparing the 3D CAD model and the 3D model of the building material with the processor model to determine the quality of the building material.

In the step of creating a 3D model, a 3D model for a building material is generated using a reverse design technique based on scan data.

The step of determining the quality includes extracting a 3D CAD model for the building material from the CAD database, merging the 3D model and the 3D CAD model, calculating a deviation between the 3D model and the 3D CAD model, And judging the quality of the building material according to whether or not the quality of the building material is greater than the predetermined value.

The method for managing quality of building materials using the inverse design according to the present invention may further include estimating the type of building material from the 3D model. In this case, the step of extracting the 3D CAD model extracts a 3D CAD model corresponding to the type of the estimated building material.

The method of managing building material quality using the reverse design according to the present invention may further include storing the 3D model in a building material database in accordance with the type of building material, use.

A method for determining a re-operation using an inverse design according to the present invention includes a step of scanning a target building member by a 3D laser scanner, a step of generating a 3D model using scan data acquired through a 3D laser scanner, And comparing the 3D CAD model and the 3D model with respect to the building member to determine whether the building member is re-constructed.

The step of judging whether to re-work includes the steps of extracting a 3D CAD model of a building member from a CAD database, merging a 3D model and a 3D CAD model, calculating a deviation between the 3D model and the 3D CAD model, And determining whether the building member is to be restarted depending on whether the reference value is exceeded.

The method for determining the re-execution using the inverse design includes the steps of storing at least one of the type, position, or identifier of the building member in the re-examination database when the deviation of the building member exceeds the re-examination reference value and is less than the re- And informing the user of at least one of the type, position, or identifier of the building member stored in the retest database at the time when the re-inspection period to be determined becomes over.

The technology described below is expected to improve the quality of building materials through systematic quality control of building materials. The quality improvement of building materials is directly related to the improvement of the quality of the building products. Therefore, it is expected that the quality of the building products is improved due to the improvement of the quality of the building materials. Data collected through quality control can be used for various quality control research and field use by establishing quality control database. In addition, the technique described below can prevent the re-work that may occur in the construction step, thereby suppressing the construction cost wasted due to the re-construction and the air extended due to the re-construction.

The effects of the techniques described below are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a schematic flowchart of a method for managing quality of building materials using reverse design.
2 is a schematic block diagram of a system for quality control of building materials using inverse design.
3 is a schematic flowchart of a method of determining a re-execution using the inverse design.
FIG. 4 is a schematic diagram of a system for a re-execution judgment using an inverse design.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, A, B, etc., may be used to describe various components, but the components are not limited by the terms, but may be used to distinguish one component from another . For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

As used herein, the singular " include "should be understood to include a plurality of representations unless the context clearly dictates otherwise, and the terms" comprises & , Parts or combinations thereof, and does not preclude the presence or addition of one or more other features, integers, steps, components, components, or combinations thereof.

Before describing the drawings in detail, it is to be clarified that the division of constituent parts in this specification is merely a division by main functions of each constituent part. That is, two or more constituent parts to be described below may be combined into one constituent part, or one constituent part may be divided into two or more functions according to functions that are more subdivided. In addition, each of the constituent units described below may additionally perform some or all of the functions of other constituent units in addition to the main functions of the constituent units themselves, and that some of the main functions, And may be carried out in a dedicated manner. Accordingly, the presence of each component described herein will be functionally interpreted, and for this reason, a system 100 for quality control of building materials using the reverse design of the present invention and a system 100 for determining the re- It should be clear that the configuration of the components according to the system 200 may differ from those of FIGS. 2 and 4, respectively, to the extent that the object of the present invention can be achieved.

Also, in performing a method or an operation method, each of the processes constituting the method may take place differently from the stated order unless clearly specified in the context. That is, each process may occur in the same order as described, may be performed substantially concurrently, or may be performed in the opposite order.

Hereinafter, a detailed description will be given of a method for determining quality of a building material using the reverse design of the present invention and a method for determining a retreat using reverse design with reference to the drawings.

1 is a schematic flowchart of a method for managing quality of building materials using reverse design. A method for controlling quality of a building material using a reverse design according to the present invention includes a step (500) of scanning a target building material by a 3D laser scanner, a step of generating a 3D model using scan data acquired through a 3D laser scanner Step 501 and the computer processor device compare and analyze the 3D CAD model and 3D model of the building material to determine the quality of the building material.

The scanning step 500 is performed via a 3D laser scanner and the remaining steps are performed through a computer processor device. A computer processor device refers to a computer device that processes scan data input from a 3D laser scanner. A device such as a general PC, a smart phone, etc., which can process an operation with a CPU, is sufficient. Therefore, it is possible to manufacture a mobile terminal device capable of carrying a processor in a 3D laser scanner.

The step of determining the quality includes a step (502) of extracting a 3D CAD model for a building material from the CAD database, a step (503) of merging the 3D model and the 3D CAD model, a step of calculating a deviation between the 3D model and the 3D CAD model Step 504 and determining (step 505) the quality of the building material according to whether the deviation exceeds the quality reference value.

The step of generating a 3D model (502) creates a 3D model of the building material using the reverse design technique based on the scan data. The inverse design technique is a technique for inferring the original design drawing based on incomplete data. In the present invention, a 3D model of a building material or a building member is generated from scan data obtained through a 3D scan of a building material or a building member described later. Specific algorithms can use a variety of methods available to those of ordinary skill in the art. Among patent publications, Patent No. 10-0753537 discloses techniques related to reverse design.

The present invention compares the 3D model of the building material with the original 3D CAD model of the building material. At this time, the original 3D CAD model must be extracted from a specific database. In the present invention, a database storing a 3D CAD model is called a CAD database. The CAD database may be included in a storage device disposed in the same apparatus together with the computer processor apparatus described above, or may be stored in a separate server connected to the computer processor apparatus by wireless communication.

The 3D CAD model for the currently scanned building materials in the CAD database should be extracted. Therefore, information is needed to identify what building materials are currently being investigated. It is possible to identify barcodes, QR codes, and RFID tags that store identification codes in building materials.

Further, the method of managing quality of building materials using the inverse design may further include estimating the type of building material from the 3D model. That is, the 3D model is estimated from the scan data acquired through the 3D laser scanner, and the type of the building material scanned from the 3D model is determined. This can be done in comparison with building material image data stored in a separate database from the 3D model. In the step of extracting the 3D CAD model, the 3D CAD model corresponding to the type of the estimated building material can be extracted.

The step of merging the 3D model and the 3D CAD model (step 503) is a process of converting the 3D model and the 3D CAD model into a comparable state in order to analyze how much the 3D model and the 3D CAD model are different. The models represented by numerical data can be compared for each configuration, or 3D models and 3D CAD models can be intuitively placed in a virtual space, and points that do not coincide with each other can be compared.

Step 504 is a step of digitizing the difference between the 3D model and the 3D CAD model.

Then, in step 505, it is determined whether the deviation, in which the 3D model and the 3D CAD model do not match, exceeds a preset reference value. The quality standard value may be different depending on the target building material or building environment. If the deviation exceeds the quality reference value, it is judged that the quality is abnormal.

3D models generated by 3D laser scanners and computer processor devices can be stored in a separate database at the construction site. This database is called the building material database. In other words, the 3D model of the building materials collected at the construction site is converted into a database and used for the management of the building materials in the following sites. It is possible to search for the amount of specific building material and whether there is building material. Of course, it would be desirable to have scan data collected for all building materials at the construction site.

FIG. 2 is a schematic diagram of a construction material quality management system 100 using a reverse design.

The on-site manager acquires the scan data with the 3D laser scanner 110 for the building material at the construction site. The acquired scan data is transferred to the computer processor apparatus 120. The 3D laser scanner 110 and the computer processor device 120 may be implemented as an integrated device as a single device or may be devices that transmit and receive scan data to each other through wired or wireless communication. Further, scan data may be acquired through the 3D laser scanner 110 in the field, and then the scan data may be transmitted to the computer processor apparatus 120 installed in another place.

The computer processor device 120 generates a 3D model of the building material using the scan data. The building material may be identified through the 3D model created as described above, or a unique identification code may be acquired while scanning the building material. The computer processor unit 120 extracts the 3D CAD model of the building material scanned from the CAD database 130 using the acquired identification code. The CAD database 130 may be a storage device included in the computer processor apparatus 120, or may be included in a separate server connected by wire or wireless.

The computer processor device 120 compares the 3D model with the 3D CAD model and determines whether the quality is abnormal. If there is any abnormality in the quality, it can be notified to the building site manager by means of a separate display device, output device, SMS message delivery and the like.

In addition, the 3D model generated for each building material on the building site can be stored in a separate building material database 140 as described above. Data accumulated in the building material database 140 can be searched or managed by a manager of a building site or the like through a separate computer device 150. That is, the 3D model obtained through the present invention can be converted into a database and then used in a separate management program or the like.

3 is a schematic flowchart of a method of determining a re-execution using the inverse design. The method of determining a re-operation using the inverse design according to the present invention includes a step (600) of scanning a target building member by a 3D laser scanner, a step of generating a 3D model using scan data obtained through a 3D laser scanner 601) and a step of comparing the 3D CAD model and the 3D model of the building member with the computer processor apparatus to determine whether the building member is to be re-constructed.

Step 603 of extracting a 3D CAD model of the building member from the CAD database, merging the 3D model and the 3D CAD model (step 604), and calculating the deviation between the 3D model and the 3D CAD model And a step (605) of judging whether or not the building member is to be restarted depending on whether the deviation exceeds the restarting reference value.

The method for determining the re-execution using the reverse design according to the present invention has a process similar to the method for managing the quality of the building material using the reverse design described above. The description of overlapping contents is omitted. The main idea of the present invention is a process of acquiring 3D scan data of a specific object, reversely designing the 3D scan data, 3D modeling the 3D scan data, and comparing the 3D scan data with the 3D CAD model of the scanned object.

The method for determining the re-operation using the inverse design according to the present invention is for judging whether or not the already constructed building or the member of the building under construction is re-constructed. With 3D laser scanners, it is easy to judge whether or not to re-work over a wide area.

On the other hand, it is necessary to judge what members of the building are currently scanned. A 3D laser scanner can scan a 3D laser scanner by attaching a barcode, a QR code, an RFID tag, etc., in which a unique identifier is stored in a building member to be scanned, by comparing the 3D model generated from the scan data with the design drawing, While simultaneously matching and storing the building member identifiers.

The computer process apparatus can compare the 3D model and the 3D CAD model with respect to the building member, and if the allowable error range exceeds the retry reference value, it can be determined that the building member is required to be re-operated. The retry reference value may be set differently depending on the structure of the building, the environment of the building, and related laws.

On the other hand, the deviation between the 3D model and the 3D CAD model of the building member does not exceed the re-inspection reference value, but subsequent management may be necessary if the re-inspection reference value is exceeded. The retesting reference value does not need to be immediately re-established, but it is prepared for the case where the aging of the building is anticipated according to the environment in which a certain period of time has elapsed or the building is arranged, and it is necessary to judge whether or not the re-construction is necessary again. The retesting reference value may also be set differently depending on the structure of the building, the environment of the building, and related laws.

To this end, if the deviation between the 3D model and the 3D CAD model exceeds the retesting reference value, at least one of the type, position, or identifier of the building member is stored in the retest database. After that, a message is sent to the administrator of the building site that the re-inspection period is needed. The re-inspection period can basically be determined by the degree of deviation of the 3D model and the 3D CAD model from the re-inspection reference value. That is, the retest period can be set in proportion to the result obtained by subtracting the retest reference value from the deviation. A variety of ways to inform the administrator of the need for retesting can be implemented. It is possible to display information indicating that re-inspection is necessary on the display device, send an SMS to the manager, or send a mail to the manager.

FIG. 4 is a schematic configuration diagram of a retry determination system 200 using an inverse design. The contents overlapping with the system described in FIG. 2 will be omitted, and only the differences will be described.

The rebuild determination system 200 using the reverse design generates a 3D model of a building member using scan data transmitted from a 3D laser scanner 210 and a 3D laser scanner 210 for acquiring scan data for a building member A computer processor unit 220 for comparing the 3D CAD model of the building member with the 3D CAD model, and a CAD database 230 for storing the 3D CAD model of the building member. And a re-examination database 240 for storing an identification value (code) of a building member whose deviation of the building member exceeds a re-inspection reference value.

The restoration judgment system 200 using the reverse design is substantially the same as the building material quality management system 100 using the above-described reverse design, except that the object to be inspected is not a building but a building.

Furthermore, the 3D model of the building member, such as the method of managing quality of building material or system 100, may be stored in a separate database and then managed. This is to acquire the current 3D model of the building and use it for the management of the building thereafter.

4 shows an example in which an identification code for identifying a building member is stored in a separate re-examination database 240 when the deviation between the 3D model and the 3D CAD model for the building member exceeds the re-inspection reference value. The computer processor 220 or another device may use the information stored in the retest database 240 to notify the building site manager or the building manager 250 of the necessity of the retest. The system configuration for alarming the necessity of re-inspecting can be implemented in various ways as described above.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It will be understood that variations and specific embodiments which may occur to those skilled in the art are included within the scope of the present invention.

100: Quality management system for building materials using reverse engineering
110: 3D laser scanner 120: computer processor device
130: CAD database 140: Building material database
150: computer device
200: Re-judgment system using reverse engineering
210: 3D laser scanner 220: Computer processor unit
230: CAD database 240: Retest database
250: Manager

Claims (10)

Scanning a target building material with a 3D laser scanner;
Generating a 3D model using the scan data acquired by the computer processor device through the 3D laser scanner; And
And comparing the 3D CAD model of the building material with the 3D model to determine the quality of the building material,
Wherein the determining comprises estimating a type of the building material from the 3D model and extracting a 3D CAD model corresponding to the estimated type of building material to perform a comparison analysis. The method according to claim 1,
Wherein the step of generating the 3D model includes a step of generating a 3D model for the building material by using an inverse design technique based on the scan data. The method according to claim 1,
The step of determining the quality
Extracting a 3D CAD model for the building material from a CAD database;
Merging the 3D model with the 3D CAD model;
Calculating a deviation between the 3D model and the 3D CAD model; And
And determining quality of the building material according to whether the deviation exceeds a quality reference value. delete The method according to claim 1,
Further comprising the step of storing the 3D model in a building material database in accordance with the type of building material, wherein the building material database is used for building material search in a building construction process. Scanning the target building member with the 3D laser scanner;
Generating a 3D model using the scan data acquired by the computer processor device through the 3D laser scanner; And
And comparing the 3D CAD model of the building member with the 3D model to determine whether the building member is to be restarted,
Wherein the determining comprises estimating a type of the building member from the 3D model and extracting a 3D CAD model corresponding to the estimated type of the building member to perform a comparative analysis. The method according to claim 6,
Wherein the generating of the 3D model comprises generating a 3D model of the building member using the reverse design technique based on the scan data. The method according to claim 6,
The step of judging whether or not to re-
Extracting a 3D CAD model for the building member from the CAD database;
Merging the 3D model with the 3D CAD model;
Calculating a deviation between the 3D model and the 3D CAD model; And
And determining whether the building member is to be re-established depending on whether the deviation exceeds a retry reference value. delete 9. The method of claim 8,
The method of determining the re-execution using the inverse design
Storing at least one of a type, a location, and an identifier of the building member in a retest database when the deviation of the building member exceeds a retesting reference value and is less than the retry reference value; And
Further comprising the step of notifying the user of at least one of the type, position, or identifier of the building member stored in the retest database at a point in time when the computer processor apparatus is determined according to the deviation, .

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