KR101733681B1 - Mobile device, system and method for provinding location information using the same - Google Patents

Abstract

The present invention provides a location information providing system, more specifically, to a mobile terminal and a system and a method for providing location information using the same, which implement a map of building information modeling (BIM) based on an augmented reality technology in the mobile terminal such as a smartphone and provide location information based on accurate location estimation on the map. According to the mobile terminal, system, and method for providing position information using the same in accordance with an embodiment of the present invention, an indoor map is acquired by interlinking computer-aided design (CAD) data with map information on an actual building, and location information on a user is corrected using a location marker, object information, near field communication (NFC) tagging or the like, thereby providing accurate location information.

Description

TECHNICAL FIELD [0001] The present invention relates to a mobile terminal, a position information providing system and method using the same,

The present invention relates to a position information providing system, and more particularly, to a mobile terminal that implements guidance on building information modeling based on augmented reality technology in a mobile terminal such as a smart phone and provides position information on the map based on accurate position estimation, And a position information providing system and method using the same.

Currently, in the field of construction, field work is carried out in the form of taking a picture of the current state of various processes and making a progress report of the construction in comparison with the construction plan, while the person in charge of the construction moves directly on the site every day for quality and process control.

In order to increase the efficiency of such field work, there is a growing demand to apply the widely used smart phone to the construction work such as quality, process, and design using the smart phone. In the case of utilizing such a smart phone, With the availability of Building Information Modeling (BIM) data, augmented reality (AR) technology can be applied to field work.

By using augmented reality technology for building construction quality management, it is possible to display the virtual world objects in the real world, so it is possible to intuitively grasp the situation on the site, display the dimensions of the facilities on the camera screen of the mobile terminal, It is expected that the efficiency of management will be minimized.

However, in order to apply the augmented reality service, which displays a drawing or a three-dimensional object on a real-world screen using a mobile terminal, to actual work, an accurate positioning technique must be preceded.

Conventionally, in the Indoor Position System, it is necessary to establish an infrastructure for positioning. In addition to not being able to install such an infrastructure in the construction site of a building, the error range reaches 5 m to 6 m, cm, it is difficult to apply it to actual work because it is not easy to acquire accurate location information.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a mobile terminal to which positioning correction technology is applied to provide more accurate positional information in order to apply an augmented reality System, and method.

According to an aspect of the present invention, there is provided a mobile terminal including: a CAD data generation module receiving CAD data from a web server and generating one or more plan views; A map interworking module receiving map information from an external map service system and interworking with the plan view; And a positioning correction module that generates current position information and corrects the position information by applying at least one positioning correction to the position information.

According to another aspect of the present invention, there is provided a system for providing location information using a mobile terminal, the system comprising: a server for generating current location information and providing an AR screen corresponding to the location information; A mobile terminal; And a web server for providing CAD data corresponding to a plurality of buildings, wherein the mobile terminal comprises: a CAD data generation module for receiving the CAD data from the web server and generating one or more plan views; A map interworking module receiving map information from an external map service system and interworking with the plan view; And a positioning correction module for applying and correcting at least one positioning correction procedure to the position information.

According to another aspect of the present invention, there is provided a method of providing location information using a mobile terminal, the method comprising: receiving CAD data from a web server and generating at least one floor plan; Receiving map information from an external map service system and interworking with the plan view; And applying at least one positioning correction to the current position information.

According to the mobile terminal and the location information providing system and method using the mobile terminal according to the embodiment of the present invention, the indoor map is acquired by linking the CAD data and the map information of the actual building, and the location information of the user is stored in the location marker, It is possible to provide more accurate position information by correcting using NFC tagging or the like.

1 is a diagram illustrating an entire structure of a location information providing system using a mobile terminal according to an embodiment of the present invention.
2 is a diagram illustrating a hardware structure of a terminal equipped with an application program having a positioning information positioning correction function according to an embodiment of the present invention.
3 is a block diagram illustrating a structure of an application program installed in a mobile terminal according to an embodiment of the present invention.
4 is a diagram illustrating a method of providing location information using a mobile terminal according to an embodiment of the present invention.
5 is a view for explaining a method of obtaining actual coordinates in a position information providing system using a mobile terminal according to an embodiment of the present invention.
6A is a diagram illustrating a method of correcting position information in a method of providing position information according to an embodiment of the present invention.
FIG. 6B is a diagram for explaining a position correction process of an application program of a mobile terminal according to an embodiment of the present invention.
7A and 7B are views illustrating a method of correcting position information using object information in a method of providing location information according to an embodiment of the present invention and a screen of a mobile terminal according to the method.
7C is a diagram illustrating an AR screen using position information provided by a position information providing system according to an embodiment of the present invention.

Prior to the description, when an element is referred to as being "comprising" or "including" an element throughout the specification, it is to be understood that the element may be further comprised of other elements . The term " Unit ... " and "Module" in the specification mean a unit for processing at least one function or operation, And a combination of software.

Furthermore, the term "embodiment" is used herein to mean serving as an example, instance, or illustration, but the subject matter of the invention is not limited by such example. It is also to be understood that the terms "including, "" having, "and other similar terms are used, but that they do not exclude any additional or different components when used in the claims, Quot; is < / RTI > used in a manner similar to the term " Comprising ".

The various techniques described herein may be implemented with hardware or software, or may be implemented with a combination of both, where appropriate. As used herein, terms such as "Unit,""Module,""System," and the like are likewise equally applicable to computer-related entities, It can be handled as equivalent to the software at the time of execution. For example, a program module may be composed of one component or a combination of two or more components. Further, in the present invention, both the application program and the hardware executed in the server or the terminal can be configured on a module basis, and can be recorded in one physical memory or distributed among two or more memories and recording media.

Hereinafter, a mobile terminal according to a preferred embodiment of the present invention, a system and method for providing location information using the mobile terminal will be described with reference to the drawings.

1 is a diagram illustrating an entire structure of a location information providing system using a mobile terminal according to an embodiment of the present invention.

Referring to FIG. 1, a location information providing system using a mobile terminal according to the present invention includes a mobile terminal 100 that generates current location information and provides an AR screen corresponding to the location information, A web server 200 for providing CAD data, and one or more positioning terminals 300 for transmitting a signal for generating tag data. The map server 300 may include a map service system for providing commercial map information and an information communication network Can be connected.

The mobile terminal 100 is a computing device carried by a user who intends to perform management of facilities in the construction field such as architecture, civil engineering, and plant based on Building Information Modeling (BIM) Thus providing information on the surrounding environment. In particular, in the embodiment of the present invention, the mobile terminal 100 receives one or more CAD data provided from the web server 200 through an installed application program, creates a corresponding floor plan, projects the floor plan to the actual map, Screen can be provided.

The mobile terminal 100 can transmit and receive data from the web server 200, and can be applied to any electronic terminal capable of installing and executing an application. As an example, the mobile terminal 100 may be a portable notebook PC, a PDA, a tablet PC, or the like, which is capable of processing various types of processes, has users in various fields, It can be a smart phone as much as possible. A more detailed structure of this mobile terminal 100 will be described later in Fig.

The application program installed in the mobile terminal 100 may include a function of receiving the CAD data from the web server 200 to generate one or more plan views in order to implement the functions described above, 500), and a function of correcting the position information by applying at least one positioning correction procedure to the position information.

The web server 200 provides CAD data for various buildings and facilities through an information communication network at the request of the mobile terminal 100. In order to process a plurality of CAD data transmission requests in real time without delay in cooperation with an application program installed in a plurality of mobile terminals 100, the web server 200 has a high-performance microprocessor and a server having a large- Device.

One or more of the positioning terminal 300 is installed in each area and continuously transmits signals such as NFC and BLE through a local communication network so that when the mobile terminal 100 is tagged or enters within a predetermined distance, And provides a position related signal to the mobile terminal 100 so that the mobile terminal 100 can perform correction for the current position information.

In addition, the map service system 500 is an external system that provides a map service commercialized on-line, and serves to provide map information about the corresponding area according to a request of the mobile terminal 100. The map information may be provided in an API form, and the mobile terminal 100 forms an AR screen by linking the map information and the floor plan.

Herein, the above-mentioned information communication network is a concept including not only a short-range wireless communication network such as WiFi and Zigbee but also a long-distance wireless communication network such as CDMA, WCDMA, Wibro, 3G and LTE.

According to the above-described structure, a location information providing system using a mobile terminal according to an embodiment of the present invention realizes an AR solution through location information of a mobile terminal, and performs location marker selection, object information, NFC tagging, Thereby correcting the current position information, it is possible to provide position information for a more accurate augmented reality.

Hereinafter, a structure of a mobile terminal according to an embodiment of the present invention will be described with reference to the drawings.

2 is a diagram illustrating a hardware structure of a terminal equipped with an application program having a positioning information positioning correction function according to an embodiment of the present invention.

Referring to FIG. 2, the mobile terminal 100 of the present invention includes a short range communication device 110 for communicating with an external positioning terminal or the like to determine a current location, a camera device A display device 130 for displaying a screen according to driving of the terminal 100, an interface device 140 for receiving a user's operation, an application program 170 for controlling driving of the entire terminal, An application processor (AP) 150 for executing an operating system (OS), an operating system (OS), and an application 170.

The short range communication device 110 serves to receive the position signal from the external system in order for the mobile terminal 100 to determine the current position. The short range communication device 110 may include a long distance communication device as well as a short distance communication device. The short distance communication device 110 continuously receives the position signal from the GPS satellite or the base station and informs the AP 150 of the position information of the current mobile terminal 100 So that it can be generated.

Particularly, in the mobile terminal 100 according to the embodiment of the present invention, the short range communication device 110 can receive a position correction signal transmitted from a positioning terminal (300 of FIG. 1) 170 corrects the currently generated position information to the actual position of the terminal by using the position correction signal. WiFi and BLE may be used as the protocol of the short range communication device 110.

The camera device 120 is mounted on the mobile terminal 100 and implements the augmented reality AR by photographing the surrounding environment. The camera device 120 is a device for providing a source for the surrounding environment according to the current location. The surrounding environment photographed by the camera device 120 is used to implement an AR screen, and efficiency of a task using the AR screen of a user can be maximized.

In particular, the mobile terminal 100 according to the embodiment of the present invention provides a function of correcting the current position of the mobile terminal 100 based on the peripheral screen acquired by the user through the camera device 120. [

The display device 130 displays a screen according to the driving of the terminal 100 and may include a video adapter. In particular, the application program 170 of the present invention can display the location of the current user and the floor plan of the building corresponding to the current location on the screen, and the user can refer to the screen, Can be obtained.

Such a display 130 may be implemented as a small liquid crystal display device (LCD), an electrophoretic device (EPD), and an organic electroluminescent device (OLED) suitable for small electronic terminals.

The application program 170 executed by the mobile terminal 100 can provide the location of the user through the AR screen including the floor plan, The current position can be corrected by selecting and moving a marker indicating the current position. The interface 140 may be implemented as a touch panel integrated with the display 130 described above.

In addition, the interface device 140 receives a user's operation required when the mobile terminal 100 is driven.

The application processor 150 may be a system on chip (SOC) suitable for a portable terminal including a central processing unit (CPU) and a graphics processing unit (GPU), executes an OS and an application program 160, And controls each of the devices mounted on the mobile terminal 100. The AP 150 executes the application 600 stored in the memory 160 and provides an AR screen for the user's surrounding environment.

Each of the components including the AP 150 can internally communicate with each other via a system bus. The system bus includes a memory bus or a memory controller, a peripheral bus Peripheral Device), and a Local Bus using various bus architectures.

The memory 160 stores an operating system (OS) for operating the terminal 100 and an application program 170 according to an embodiment of the present invention, as well as programs for executing functions of other mobile terminals Depending on the type, the runtime process can be resident. The memory 160 may be composed of a read only memory (ROM) and a random access memory (RAM) or the like.

In particular, the application program 170 of the present invention, which is stored and resident in the memory 160, can be configured with a plurality of modules. The indoor positioning solution is implemented by linking the floor plan of the building based on the CAD data and the commercial map, The present invention provides a more accurate position information of the user through the adjustment of the position marker of the user, the correction using the position value of the surrounding objects, and the position adjustment using the NFC tagging. A detailed description of an application program for implementing such a function will be described later.

In addition, although not shown, the mobile terminal of the present invention may further include a sensing means for generating IMU (Inertial Measurement Unit) data such as an acceleration sensor and an inertial sensor, And can be used to continuously update the current position information as the user moves inside the room.

According to the above-described structure, the mobile terminal according to the embodiment of the present invention provides the AR screen according to the user's location through the mounted device, and more accurate position information can be provided by applying one or more positioning correction methods . Hereinafter, a structure of a safety application program installed in a terminal according to an embodiment of the present invention will be described in detail with reference to the drawings.

3 is a block diagram illustrating a structure of an application program installed in a mobile terminal according to an embodiment of the present invention.

3, the application program 170 of the mobile terminal according to the embodiment of the present invention includes a CAD data generation module 171 that receives CAD data from the web server 200 and generates one or more plan views, A map interlock module 172 for receiving map information from the map service system 500 of the map service system 500 and linking the map information with the map information of the map service system 500 and generating current position information and applying at least one positioning correction procedure to the position information And a correction module 173.

The CAD data generation module 171 is for realizing a function of providing a detailed floor plan of a building interior rather than a simple outdoor environment in providing an AR screen in the mobile terminal of the present invention, Receives the CAD data on the indoor structure of the building from the building data, and creates a floor plan based on the CAD data. Such a floor plan can be generated in a keyhole markup language (KML) format, which is a markup language schema language, and models and expresses the surrounding environment, that is, the annotation in the building.

In addition, the CAD data generation module 171 may include a component that performs one or more independent functions in order to more accurately locate the user's current location information, An object information extracting unit 1712 for generating object information including data on a name and a position of the object on the plan view, a floor plan generating unit 1711 for generating a floor plan in which at least one object is received by receiving data, And a position information generator 1713 for generating tag data corresponding to the signal transmitted from the positioning terminal.

Here, the plan view generator 1711 generates a plan view of the XML format corresponding to the current position based on the CAD data, and the object information extractor 1712 generates object information about the objects located on the plan view . Here, the object information can be generated in XML format. The location information generation unit 1713 receives the signal for the current location from one or more positioning terminals installed in the vicinity of the mobile terminal, and generates tag data for the current location. Here, the signal may be transmitted / received in an NFC or BLE manner.

The map interworking module 172 receives the top view at the current position provided from the CAD data generation module 171 and the commercial map information being served on-line by the external map service system 500, It plays a role of linking information. Accordingly, the mobile terminal provides the floor plan projected on the map at the current position as an AR screen.

The positioning correction module 173 serves to correct the current position information appearing on the linked plan view. In detail, an error may occur in the position information generated by the mobile terminal. Accordingly, the current position on the AR screen is calculated based on a signal transmitted from a GPS or a base station, and may not be an accurate user position. To correct inaccurate position information, the positioning correction module 173 corrects the position information through one or more correction methods.

The positioning correction module 173 includes a marker control unit 1731 for displaying an object in the form of a position marker on a plan view, moving the position of the position marker according to a user's operation and correcting the position information, An object setting unit 1732 that corrects the positional information based on positional data of the tag data, and a tag setting unit 1733 that corrects the positional information based on the tag data.

Here, the marker control unit 1731 marks the position of the user on the linked plan view, and the user directly confirms the position of the user and moves the position marker to correct the current position. At this time, when the user moves the position marker to the correct position, the marker control unit 1731 calculates the distance {delta (x, y)} that the position marker has moved and corrects the current position information based on the calculated value .

In addition, the object setting unit 1732 corrects the current user's location information based on the object location information of the objects such as facilities installed in the building on the floor plan around the user, 1733 corrects the position information based on the tag data corresponding to the tagged signal from the positioning terminal installed around the user.

Accordingly, the application program installed in the mobile terminal according to the embodiment of the present invention can provide more accurate position information through various correction methods.

Hereinafter, a method of providing location information according to an embodiment of the present invention will be described with reference to the drawings.

4 is a diagram illustrating a method of providing location information using a mobile terminal according to an embodiment of the present invention. In the following description, the execution subject of each step is an application program installed in the mobile terminal of the present invention unless otherwise described.

Referring to FIG. 4, a location information providing method using a mobile terminal according to the present invention is a method of providing location information using a mobile terminal, comprising the steps of: (S110) receiving CAD data from a web server and generating one or more plan views, (S120) receiving the map information from the map service system of the map service system and interworking with the plan view (S120), and performing the correction by applying at least one positioning correction to the current position information (S130).

The step S110 of receiving the CAD data from the web server and generating one or more plan views (S110) includes receiving CAD data for the surrounding buildings at the current location and generating a plan view of the XML format, Receives one or more CAD data for the indoor structure, and generates a floor plan in a form that can be displayed on the mobile terminal.

In addition, in the step S110, the step of generating CAD data by receiving the CAD data from the web server and generating at least one object in a plan view, wherein, after the generation of the plan view, Generating tag information corresponding to a signal transmitted from the positioning terminal, and generating tag information corresponding to the signal transmitted from the positioning terminal.

The step (S120) of receiving the map information from the external map service system and interlocking with the plan view (S120) is a step of receiving map information, which is a commercial service, and interlocking with the plan view, The AR screen can be provided. Users can easily acquire information about the facilities in the building through the AR screen. By recording the direction and storing the photographs, the user can work efficiently in the field office by linking the photographs with the AR screen. Can be performed.

Next, a step (S130) of applying and correcting at least one positioning correction to the current position information is a step of correcting the current position information by the positioning correction module, wherein the user operates the marker on the interlocking plan view, The position information can be more accurately corrected through NFC tagging or the like.

For this, step S130 may include displaying the object in the form of a marker on the plan view. After the step of displaying the object, the position of the marker is moved in correspondence with the operation of the user to correct the position information The method may further include at least one of correcting the positional information based on at least one positional data among the objects, and correcting the positional information based on the tag data.

Specifically, the marker control unit can move the position marker to the correct position according to the position of the user, which is directly checked by the user, when the position marker corresponding to the current position information is displayed on the plan view. The current position information is corrected corresponding to the movement.

In addition, the object setting unit may display object information about one or more objects located in the linked plan view and the position of the object, and when the user selects one of the objects, the object setting unit sets the current position Information is corrected.

In addition, the tag setting unit corrects the current position information based on the tag data generated by the position information generating unit as the user performs NFC tagging on the surrounding positioning terminal.

According to the above-described steps, the location information providing method using the mobile terminal according to the embodiment of the present invention can provide more accurate position information by applying various correction methods.

Hereinafter, a method of acquiring coordinates according to actual positions and a position information correction procedure in a position information providing system according to an embodiment of the present invention will be described in detail with reference to the drawings.

5 is a view for explaining a method of obtaining actual coordinates in a position information providing system using a mobile terminal according to an embodiment of the present invention.

Referring to FIG. 5, in the location information providing system using the mobile terminal according to the embodiment of the present invention, the AR screen is provided by linking the floor plan of the interior of the building through the mobile terminal and the map information of the nearby commercial environment , And a plan view m100 of the building provides a screen projected on the surrounding map information m110. Here, the current position information A of the user can be displayed, and the user can correct the position information on the screen.

As an example, the user can select the position marker p1 for the current position before correction on the top view m100 of the mobile terminal, select the position marker p1 before correction on the screen, The marker p2 can be moved and the mobile terminal can correct the position information of the current user on the basis of the movement distance p1? P2 of the position marker.

FIG. 6A is a diagram illustrating a method of correcting positional information in a method for providing positional information according to an embodiment of the present invention, FIG. 6B is a view for explaining a positional correction process of an application program of a mobile terminal according to an embodiment of the present invention to be.

Referring to FIG. 6A, in the method of providing location information according to an embodiment of the present invention, current location information may be provided on a floor plan and the location information may be corrected, and the correction value may be continuously updated when the user moves . As a concrete method, there is a method including a step S200 of initializing position information of a mobile terminal, a step of updating position information based on IMU (Inertial Measurement Unit) data, a step of applying updated position information to the AR screen, And correcting the applied position information (S230).

First, initializing the location information of the mobile terminal (S200) is a step of providing a linked topology in which the initial application program is executed and initialized, and the current location information is located. Then, as the user having the mobile terminal moves in the room, the current location information is continuously updated based on the IMU data acquired through the inertial sensor or the like installed in the mobile terminal (S210). Then, the mobile terminal displays the position information of the user in real time by applying the updated position information to the AR screen (S220), and corrects the applied position information according to the movement of the user's position marker, object information selection, and NFC tagging (S230). Thereafter, the process is repeated from step S210.

FIG. 6B is a diagram illustrating a process according to the execution of the application program of the present invention implementing the correction method shown in FIG. 6A. In the first process (p100), the application program stores currentPos, Is set to be the same. Here, the current position value may be a coordinate value of NFC, QRCode by the positioning terminal, position marker generated by the marker control unit, and the like.

Then, when the user executes the second process p110 according to the walk around and the distant is obtained by the IMU data by the third process p120, the fourth process p130 ) Will update currentPos. At this time, the fifth process (p140) proceeds to the fifth process (p150) when the travel distance reaches the check point (checkPoint), and inputs the mapPos on the map to the updated currentPos (p150) Process p110 is recalled.

7A and 7B are views illustrating a method of correcting position information using object information in a method of providing location information according to an embodiment of the present invention and a screen of a mobile terminal according to the method.

Referring to FIG. 7A, a method of providing location information according to an exemplary embodiment of the present invention includes displaying a neighboring object list at a current location (S300), selecting a specific object S310), and acquiring position information based on the object information of the selected object (S320).

Referring to FIG. 7B, the mobile terminal 100 may provide a list of objects for the facilities installed in the building centered on the location of the user on the interlocked plan view kmp (S300). In the drawing, a door list composed of '101A', '101B', '101C' and '101D' is illustrated. When the user selects (p1) any one of the list of objects '101B' (S310) The object information defined in the object can be obtained (S320), and the application program can correct the current user's position information based on the position value of the object included in the object information.

FIG. 7C illustrates an AR screen using location information provided by a location information providing system according to an embodiment of the present invention. Referring to FIG. 7C, an object (i) for an actual user and nearby facilities is displayed on the screen on the basis of CAD data The user can input a meta information for each object i on the planar map kmp through the mobile terminal to easily solve the problems that arise in performing the business using the meta information. It can be expected that the effect can be grasped.

While a great many are described in the foregoing description, it should be construed as an example of preferred embodiments rather than limiting the scope of the invention. Accordingly, the invention is not to be determined by the embodiments described, but should be determined by equivalents to the claims and the appended claims.

100: Mobile terminal 110: Local area communication device
120: camera device 130: display device
140: Interface device 150: AP
160: memory 170: application program

Claims (10)

A CAD data generation module that receives CAD data from a web server and generates at least one plan view and tag data corresponding to a signal transmitted from the positioning terminal;
A map interworking module receiving map information from an external map service system and interworking with the plan view; And
And a positioning correction module for generating current position information and correcting the position information by applying at least one positioning correction to the position information,
Wherein the positioning correction module comprises:
A marker control unit for moving a position of a marker corresponding to a user and correcting the positional information according to a user's operation;
An object setting unit for correcting the positional information based on positional data of at least one object displayed in a marker form on the plan view; And
A tag setting unit for correcting the positional information based on the tag data,
Gt; The method according to claim 1,
Wherein the CAD data generation module comprises:
A floor plan generating unit receiving CAD data from the web server and generating a floor plan in which the objects are arranged; And
An object information extracting unit for generating object information including data on a name and a position of the object on the plan view; And
A position information generating unit
Lt; / RTI > delete A location information providing system using a mobile terminal,
A mobile terminal for generating current location information and providing an AR screen corresponding to the location information;
At least one positioning terminal for transmitting a signal for generating tag data; And
And a web server for providing CAD data corresponding to a plurality of buildings,
The mobile terminal comprises:
A CAD data generation module that receives the CAD data from the web server and generates one or more plan views and tag data corresponding to a signal transmitted from the positioning terminal;
A map interworking module receiving map information from an external map service system and interworking with the plan view; And
And a positioning correction module for correcting the positioning information by applying at least one positioning correction procedure to the position information,
Wherein the positioning correction module comprises:
A marker control unit for moving a position of a marker corresponding to a user and correcting the positional information according to a user's operation;
An object setting unit for correcting the positional information based on positional data of at least one object displayed in a marker form on the plan view; And
A tag setting unit for correcting the positional information based on the tag data,
And a location information providing system using the mobile terminal. 5. The method of claim 4,
Wherein the CAD data generation module comprises:
A plan view generation unit receiving CAD data from the web server and generating a plan view in which at least one object is disposed;
An object information extracting unit for generating object information including data on a name and a position of the object on the plan view; And
A position information generating unit
And a location information providing system using the mobile terminal. 6. The method of claim 5,
Wherein the positioning correction module comprises:
A marker control unit for displaying the object in the form of a marker on the plan view and moving the position of the marker corresponding to a user's operation to correct the positional information;
An object setting unit for correcting the position information based on at least one position data among the objects; And
A tag setting unit for correcting the positional information based on the tag data,
And a location information providing system using the mobile terminal. delete A location information providing method using a mobile terminal,
Receiving at least one CAD data from a web server and generating at least one plan view in which at least one object is displayed in the form of a marker;
Generating object information including data on a name and a position of the object on the plan view;
Generating tag data corresponding to a signal transmitted from a positioning terminal;
Receiving map information from an external map service system and interworking with the plan view; And
And applying at least one positioning correction to the current position information,
Wherein the step of applying at least one positioning correction procedure to the position information comprises:
Correcting the positional information by moving a position of a marker of a user according to an operation of a user;
Correcting the positional information based on positional data of at least one of the objects; And
And correcting the positional information based on the tag data. The present invention also provides a method of providing positional information using a mobile terminal. delete delete

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