KR101810518B1 - Object query system and method using BIM data of IFC format - Google Patents

Abstract

The present invention relates to a system and a method for querying an object using BIM data of an IFC format. The system for querying an object using BIM data of an IFC format comprises: a user terminal requesting a query with respect to object information to a BIM DB server; and the BIM DB server generating a query result according to the request of the user terminal, and transmitting the query result to the user terminal. The BIM data of the IFC format is parsed and queried according to the object query request of the user to generate query result information, and the query result information can be efficiently visualized through a context-based BIM style definition (BSD) language.

Description

{Object query system and method using BIM data of IFC format}

The present invention relates to an object query system and method using IFC format BIM data. More particularly, the present invention relates to an object query system and method using an IFC format, To an object query system and method using an IFC format BIM data that can improve visibility through visualization through a context-based BSD language.

In order to solve the problems that can not be solved by existing technologies such as FM, energy, and spatial information, Smart Building & Management (SBUM) Is increasing. The BIM is based on the Industry Foundation Classes (IFC) format, which is widely used in the construction field.

For the BIM-based SBUM, it is necessary to first query the BIM information and effectively visualize the result to the user in accordance with the Usecase context. However, research related to this problem is very ineffective at home and abroad. Therefore, it is necessary to conduct research to effectively visualize the above query results to users.

A method for providing data included in a BIM data file, a recording medium on which the data is recorded, and a system including the same, Registration No. 10-1230929, Registration date February 01, 2013, 'Method of providing data of BIM server'

The object of the present invention is to provide a method and apparatus for generating query result information by parsing and querying IFC format BIM data according to a user's object query request, And to provide an object query system and method using BIM data of IFC format that can improve visibility through BSD language.

According to an aspect of the present invention, there is provided an object query system using IFC format BIM data, the object query system comprising: a user terminal for requesting a BIM DB server to inquire about object information; And a BIM DB server for generating a query result according to a request of the user terminal and transmitting the query result to the user terminal.

According to a preferred embodiment of the present invention, the BIM DB server comprises: a BIM DB unit for receiving and storing IFC format BIM data from the user terminal; A BIM parser for receiving and parsing IFC format BIM data from the BIM DB unit to generate parsing information; An SBIM schema defining the SBIM schema structure according to the user's purpose; An SBIM MR unit for extracting object information corresponding to the SBIM schema structure among the parsing information generated by the parser and storing the extracted object information in the SBIM schema structure to generate SBIM information; An SBIM query unit for generating query result information by querying SBIM information stored in the SBIM MR unit through a defined SBIM query when there is an object information query of the user terminal; A query result visualization unit for visualizing the query result information generated by the SBIM query unit through a defined context-based BSD language; And a BIM transmitter for transmitting the visualized query result information to the user terminal.

According to a preferred embodiment of the present invention, in the SBIM schema structure, a building object such as a floor, a wall, and a window is mapped to an Object class, a type of a building object is mapped to an ObjectType class, and a Whole / Relationship class, and other relations are mapped to Association Relationship class.

According to a preferred embodiment of the present invention, the SBIMql includes a token analyzer capable of automatically checking a grammar error; And a parser generator for generating a parser that performs parsing according to the user definition.

According to a preferred embodiment of the present invention, the context-based BSD language comprises a plurality of BS (BIM query result styles) defining a visualization style of the query result information.

According to a preferred embodiment of the present invention, the BS (BIM query results style)

An attribute style that defines how the attribute values contained in the query result information are to be represented; A shape style that defines in which material the shape of the object included in the query result information is to be visualized; And a style applying condition for defining the specific condition so that the attribute and the shape style can be applied when the specific condition is satisfied.

According to a preferred embodiment of the present invention, there is provided an object query method of an object query system using IFC format BIM data, the method comprising: inputting BIM data in IFC format to a BIM DB server through a user terminal, step; And a step B in which a BIM DB server generates a query result according to a request of the user terminal and transmits the query result to the user terminal.

According to a preferred embodiment of the present invention, the step B includes: receiving and storing BIM data of the IFC format from the BIM DB-added user terminal;

Receiving BIM data of the IFC format from the BIM DB unit and parsing the received BIM data to generate parsing information; Extracting object information corresponding to the SBIM schema structure defined in the SBIM schema part of the parsing information generated by the parser and storing the object information in the SBIM schema structure to generate and store SBIM information; Generating query result information by performing a query on SBIM information stored in the SBIM MR unit through an SBIM query defined by the SBIM query unit; The query result visualization unit visualizing the query result information through the defined context-based BSD language; And the BIM transmitting unit transmits the visualized query result information to the user terminal.

According to a preferred embodiment of the present invention, in the SBIM schema structure, a building object such as a floor, a wall, and a window is mapped to an Object class, a type of a building object is mapped to an ObjectType class, and a Whole / Relationship class, and other relations are mapped to Association Relationship class.

According to a preferred embodiment of the present invention, the SBIMql includes a token analyzer capable of automatically checking a grammar error; And a parser generator for generating a parser that performs parsing according to the user definition.

According to a preferred embodiment of the present invention, the context-

And a plurality of BS (BIM query result styles) that define a visualization style of the query result information.

According to a preferred embodiment of the present invention, the BS (BIM query results style)

An attribute style that defines how the attribute values contained in the query result information are to be represented;

A shape style that defines in which material the shape of the object included in the query result information is to be visualized; And a style applying condition for defining the specific condition so that the attribute and the shape style can be applied when the specific condition is satisfied.

The object query system and method using the BIM data of the IFC format proposed in the present invention includes parsing and querying BIM data of IFC format according to a request of an object query of a user to generate query result information, Visualization is possible through the BSD language and the visibility can be improved.

1 is a schematic diagram of an overall system according to an embodiment of the present invention.
2 is a flowchart of an object query method using a system according to an embodiment of the present invention
FIG. 3 is a diagram illustrating a Unified Modeling Language (UML) of the SBIM schema structure according to an embodiment of the present invention.
4 is an operation diagram of an SBIM query unit according to an embodiment of the present invention.

Hereinafter, an object query system and an object query method using IFC format BIM data according to an embodiment of the present invention will be described with reference to the accompanying drawings. The present invention will be described in detail with reference to the portions necessary for understanding the operation and operation according to the present invention.

In the description of the components of the present invention, the same reference numerals are given to components having the same name, and the same reference numerals can be given to different components even if they are different from each other. However, even in such a case, it does not mean that the corresponding component has different functions according to the embodiment, or does not mean that the different components have the same function, and the function of each component is not limited to the It should be judged based on the description of each component.

1 is a structural diagram of an overall system according to an embodiment of the present invention. 1, an object query system using BIM data of the IFC format according to the present invention includes a user terminal 100 requesting a query of object information to a BIM DB server 200, And a BIM DB server 200 for generating a query result according to a request and transmitting the generated query result to the user terminal 100. The user terminal 100 may be a general personal computer (PC) or a portable mobile phone, a smart phone, a tablet computer, a notebook computer, a PDA (personal digital assistant), a PMP Portable Multimedia Player) or the like, and it is sufficient that the BIM DB server 200 can request the object query and display the query result.

The BIM DB server 200 includes a BIM DB unit 210 for receiving and storing IFC format BIM data from the user terminal and a BIM DB unit 210 for receiving and parsing BIM data in IFC format from the BIM DB unit 210, An SBIM schema 230 in which a Simple Building Information Modeling (SBIM) schema structure according to the purpose of the user is defined, and a parser 230 for parsing the parsed information generated by the parser 220, An SBIM MR (SBIM Mapping Rule) unit 240 for extracting object information corresponding to the SBIM schema structure and storing the object information in the SBIM schema structure to generate SBIM information, An SBIM query unit 250 that queries the SBIM information stored in the SBIM MR unit 240 through the SBIM query language to generate query result information, Information defined as Context a query result visualization unit 260 for making visualization via a BSD (BIM Style Definition) language, and a BIM transmission unit 270 for transmitting the visualized query result information to the user terminal 100. The communication between the user terminal 100 and the BIM DB server 200 may be performed by a local area network (LAN), a wide area network (WAN), a value added network (VAN) Such as a Personal Area Network (PAN), a mobile radio communication network, or a satellite communication network.

The object query using the object query system using the IFC format BIM data of the present invention includes a step of the user inputting the IFC format BIM data or requesting the object query to the BIM DB server 200 through the user terminal 100, The BIM DB server 200 generates a query result and transmits the query result to the user terminal 100 according to the request of the terminal 100. [ Hereinafter, the process will be described in detail with reference to the drawings. FIG. 2 is a flowchart of an object query method using a system according to an embodiment of the present invention. 2, when the user wants to query an object, the BIM DB unit 210 of the BIM DB server 200 searches the IFC format desired by the user terminal 100 for the object query, And then stores the BIM data. (S100) Next, the BIM parser 220 receives and parses the BIM data of the IFC format from the BIM DB 210 to generate parsing information. (S200)

Next, the SBIM MR unit 240 extracts the object information corresponding to the SBIM schema structure defined in the SBIM schema unit 230 among the parsing information, stores it in the SBIM schema structure, and generates and stores the SBIM information . (S300) The SBIM schema structure defined above is defined as follows. 3 is a Unified Modeling Language (UML) of the SBIM schema structure according to an embodiment of the present invention. As shown in FIG. 3, the SBIM schema structure maps a building object such as a floor, a wall, and a window to an Object class, maps a building object type to an ObjectType class, and the Whole / Part relationship of the Object class is a Containment Relationship class And other relationships are defined as mapping to the Association Relationship class. BIM data of IFC format is divided into shape information and attribute information. BIM data structure of IFC format is composed of more than 700 classes considering extensibility and semantically defines the relationship between classes It is very complicated. Therefore, by simplifying the IFC format BIM data according to the purpose of the user into the SBIM schema structure shown in FIG. 3, it is possible to efficiently extract desired object information through the query using the defined SBIMql.

Next, the SBIM query unit 250 performs a query on the SBIM information through the defined SBIMql to generate and store the query result information. (S400) The SBIMql defined above is defined by the following source code.

% token PROPERTY_NAME

% token STRING

%%

Variable

: PROPERTY_NAME

Value

: STRING

ConditionOP

: '=' | '<' | '>' | '<=' | '> ='

Func

: Isin

| IsCross

| IsOut

SimpleExpression

: Variables ConditionOP Value

LogicOp

: 'AND'

| 'OR'

Expression

: SimpleExpression

| SimpleExpression LogicOp Expression

%%

The source code of the SBIMql includes a token analyzer that can automatically check grammar errors and a parser generator that generates a parser that parses according to user definition. If you define SBIMql with the above source code, the following query is possible through SBIMql.

SELECT * FROM IfcObject WHERE

Type = IfcWindow AND Name = 'Window xyz'

The meaning of the above statement is to query all objects whose type is IfcWindow and whose name (Name) attribute value is 'Window xyz'. 4 is an operation diagram of an SBIM query unit according to an embodiment of the present invention. As shown in FIG. 4, the SBIM query unit 250 queries the SBIM information through SBIMql defined by the source code to generate and store query result information.

Next, the query result visualization unit 260 performs a step of visualizing the query result information through the defined context-based BSD language. (S500) The Context-based BSD defined above is composed of a plurality of BS (BIM Query Result Styles, hereinafter referred to as 'BS') defining a visualization style of the query result information. A shape style that defines an attribute style that defines how to express a shape, a shape style that defines what material the shape of the object included in the query result information is to be visualized, and a shape style that defines the specific condition so that the attribute and shape style can be applied when the specific condition is satisfied And a style application condition.

In visualizing the query result information through the context-based BSD language, if the context is a 'space program', the visualization of query result information according to the context can be defined based on XML as follows.

<BSD>

<BS Context = "Facility management"

Desc = "Information highlight">

<Condition Type = "Property"

Name = "Length of object">

<Filter Var = "Type"

Value = "IfcWallStandardCase">

<FilterVar = "DistanceFromCameraTo ObjectCenterPosition"

FromValue = "0" ToValue = "10">

<Logic>

Value = string.format ("Length of% s =% .2f", Property.PSet ("Name"), Property.PSet ("Length"))

TextHeight = 30.0 - Distance FromCameraToObjectCenterPosition

</ Logic>

</ Filter>

</ Filter>

</ Condition>

<Condition Type = "Geometry" Desc = "Object highlight">

<Filter Var = "Type" Value = "IfcWallStandardCase">

<Filter Var = "SortIndex" Value = "0">

<Logic>

Color = RGB (0.0, 1.0, 1.0, 1.0)

</ Logic>

</ Filter>

</ Filter>

</ Condition>

<Condition Type = "Geometry"

Desc = "Transparent schema">

<Filter Var = "Type"

Value = "IfcWallStandardCase">

<Filter Var = "DistanceFromCamera

ToObjectCenterPosition "

FromValue = "0"

ToValue = "10">

<Filter Var = "SortIndex"

ValueFrom = "1"

ValueTo = "infinite">

<Logic>

Ratio = (QR.Count - SortIndex) / QR.Count

Color = RGB (0.0, 1.0, 0.0, Ratio)

</ Logic>

</ Filter> </ Filter> </ Filter>

</ Condition>

</ BS>

</ BSD>

The mapping method for the above definition is performed by the following equation.

BSD = {BS ^* }, BS = {BS _{arg ,} C ^* }

BS _arg = (Ctx, Desc), Ctx = Context, Desc = Description

C = {C _arg , F ^* }, C _arg = {T, N}

F = {F _arg , L}, F _arg = {Var, V, V _from , V _To }

The meanings of the components included in the above equations are shown in Table 1.

Element Description

BIM query results Style Definition.

BIM Style Definition

Arguments of BIM Style like below.
Ctx = Context name
Desc = Description

BIM Style Definition's Arguments

BSD Context Definition

BSD Description

BSD Context Condition Definition

BSD Context Condition's Arguments

Context-based Condition Type

Context-based Condition Name

Context-based Condition's Filter Definition

Filter Arguments which has a variable, value and equation.

BSD Condition's Logic script to describe the BIM Property and Geometry Transformation depending on Context

Context-based Condition Filer Variable such as Type, Distance From Camera To Object Center and Order Index

Filter Variable's value

'From value' to evaluate the Filter condition

'To value' to evaluate the Filter condition

Next, the BIM transmitting unit 270 transmits the query result information that is defined based on XML and visualized as described above to the user terminal. (S600) Through the above-described steps, the user can perform object query on the BIM data of the IFC format through the object query system, and can visually confirm the query result information with improved visibility through the context-based BSD language .

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: User terminal
200: BIM DB server
210: BIM DB section
220: BIM Far West
230: SBIM skier
240: SBIM MR part
250: SBIM query unit
260: query result visualization unit
270: BIM transmission unit

Claims (12)

In an object query system using BIM data in IFC format,
A user terminal 100 for requesting the BIM DB server 200 to inquire about object information;
A BIM DB server 200 for generating a query result according to a request of the user terminal 100 and transmitting the query result to the user terminal 100;
, &Lt; / RTI &
The BIM DB server 200,
A BIM DB unit 210 for receiving and storing IFC format BIM data from the user terminal 100;
A BIM parser 220 for receiving and parsing IFC format BIM data from the BIM DB 210 to generate parsing information;
An SBIM schema block 230 in which an SBIM schema structure according to the purpose of the user is defined;
An SBIM MR unit 240 for extracting object information corresponding to the SBIM schema structure among the parsing information generated by the parser 220 and storing the extracted object information in the SBIM schema structure to generate SBIM information; And
An SBIM query unit 250 that queries the SBIM information stored in the SBIM MR unit 240 through the defined SBIM query to generate query result information when there is an object information query of the user terminal;
A query result visualization unit 260 for visualizing the query result information generated by the SBIM query unit 250 through a defined context-based BSD language; And
A BIM transmitter 270 for transmitting the visualized query result information to the user terminal;
, &Lt; / RTI &
The SBIM schema structure comprises:
A building object such as a floor, a wall, and a window is mapped to an Object class, a type of a building object is mapped to an ObjectType class, a Whole / Part relationship is mapped to a Container Relationship class, and other relationships are mapped to an Association Relationship class The object query system using IFC format BIM data.
delete delete The method according to claim 1,
In the SBIMql,
A token analyzer capable of automatically checking grammar errors; And
A parser generator for generating a parser that performs parsing according to user definition;
And an object query system using the IFC format BIM data.
The method according to claim 1,
In the context-based BSD language,
And a plurality of BS (BIM query result styles) that define a visualization style of the query result information.
6. The method of claim 5,
The BS (BIM query results style)
An attribute style that defines how the attribute values contained in the query result information are to be represented;
A shape style that defines in which material the shape of the object included in the query result information is to be visualized; And
A style applying condition that defines the specific condition so that the attribute and the shape style can be applied when the specific condition is satisfied;
And an object query system using the IFC format BIM data.
In an object query method of an object query system using IFC format BIM data,
A step of the user inputting the IFC format BIM data or requesting the object query to the BIM DB server 200 through the user terminal 100;
A B step of generating a query result by the BIM DB server 200 according to a request of the user terminal 100 and transmitting the query result to the user terminal 100;
, &Lt; / RTI &
In the step B,
Receiving and storing BIM data of IFC format from the user terminal 100 by the BIM DB unit 210;
Receiving BIM data of IFC format from the BIM DB unit 210 and parsing the BIM data to generate parsing information;
The SBIM MR unit 240 extracts object information corresponding to the SBIM schema structure defined in the SBIM schema unit 230 among the parsing information generated by the parser unit 220 and stores the object information in the SBIM schema structure to generate SBIM information And storing;
The SBIM query unit 250 queries the SBIM information stored in the SBIM MR unit 240 through the defined SBIM query to generate query result information;
The query result visualization unit 260 visualizes the query result information through the defined context-based BSD language; And
The BIM transmitting unit 270 transmitting the visualized query result information to the user terminal 100;
, &Lt; / RTI &
The SBIM schema structure comprises:
A building object such as a floor, a wall, and a window is mapped to an Object class, a type of a building object is mapped to an ObjectType class, a Whole / Part relationship is mapped to a Container Relationship class, and other relationships are mapped to an Association Relationship class And the object query method of the object query system using the IFC format BIM data.
delete delete 8. The method of claim 7,
In the SBIMql,
A token analyzer capable of automatically checking grammar errors; And
A parser generator for generating a parser that performs parsing according to user definition;
The method of claim 1, wherein the object query method comprises the steps of:
8. The method of claim 7,
In the context-based BSD language,
And a plurality of BS (BIM query result styles) defining a visualization style of the query result information.
12. The method of claim 11,
The BS (BIM query results style)
An attribute style that defines how the attribute values contained in the query result information are to be represented;
A shape style that defines in which material the shape of the object included in the query result information is to be visualized; And
A style applying condition that defines the specific condition so that the attribute and the shape style can be applied when the specific condition is satisfied;
The method of claim 1, wherein the object query method comprises the steps of:

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