KR20210081262A - Apparatus for transmitting lidar scanning 3D data and method thereof and smart system for monitoring fire using the same and method thereof - Google Patents

Abstract

An apparatus for transmitting lidar scanning 3D data and a method thereof and a smart system for monitoring fire using the same and a method thereof are provided. An apparatus for transmitting lidar scanning 3D data according to an embodiment of the present invention comprises: a determination part for determining whether the object size of the lidar scanning 3D data to be transmitted exceeds a reference value; a first processing part for adjusting and reducing the object size of the 3D data when the object size of the lidar scanning 3D data to be transmitted exceeds the reference value; a second processing part for adjusting and reducing the number of vertices and faces of the 3D data when the object size of the lidar scanning 3D data to be transmitted is less than or equal to the reference value; and a transmitting for transmitting the adjusted data. Therefore, it is possible to efficiently transfer the lidar scanning 3D data to an application.

Description

Apparatus for transmitting lidar scanning 3D data and method thereof and smart system for monitoring fire using the same and method thereof

The present invention relates to a lidar scanning 3D data transmission apparatus and method, a smart fire alarm system using the same, and a method thereof.

Recently, disasters are becoming larger and more complex, and the need to solve problems through more advanced technical support is increasing. In particular, it is urgently required to provide disaster safety and life safety services that citizens can experience through the construction of smart cities and core technologies of the 4th industrial revolution such as ICT to solve preemptive and intelligent problems.

On the other hand, in case a disaster occurs indoors or underground where GPS reception is difficult, a method of constructing 3D data scanned with a lidar sensor in advance and utilizing it is being attempted. By attaching a lidar sensor to a drone to photograph a building, it is not necessary for a person to take a picture while carrying the lidar sensor, and it is possible to shoot from various angles and in places that are not easily accessible by humans.

However, since the lidar scanning 3D data has to go through several processing steps, it takes a lot of time to transmit as well as increases the data capacity. Therefore, there is a need for a method for efficiently transmitting lidar scanning 3D data. In addition, there is a demand for a smart fire alarm system that can provide information in a building to users, managers, and firefighters using this.

In order to solve the problems of the prior art as described above, an embodiment of the present invention can reduce the size of an object or reduce the number of vertices and faces to reduce the capacity of lidar scanning 3D data to efficiently transmit it to an application. An object of the present invention is to provide a lidar scanning 3D data transmission apparatus and a method therefor.

In addition, an embodiment of the present invention provides a smart fire alarm system that allows more rapid lifesaving by propagating the exact ignition location through mobile and sharing the evacuation route, emergency equipment location, and entry route based on the lidar scanning 3D data, and We want to provide that method.

However, the problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention for solving the above problems, a determination unit for determining whether an object size of the lidar scanning 3D data to be transmitted exceeds a reference value; a first processing unit configured to decrease the object size of the 3D data when the object size of the lidar scanning 3D data to be transmitted exceeds a reference value; a second processing unit that adjusts to reduce the number of vertices and faces of 3D data when the object size of the lidar scanning 3D data to be transmitted is less than or equal to a reference value; And there is provided a lidar scanning 3D data transmission apparatus including a transmission unit for transmitting the adjusted data.

In an embodiment, the first processing unit may adjust the scale of the 3D data and extract the scaled 3D format file.

In an embodiment, the second processing unit extracts vertices and faces of the 3D data and adjusts the number of vertices and faces to extract the reduced capacity 3D format file.

In an embodiment, the reference value may be a preset value so that object quality does not change as the size of the object is reduced.

In another aspect of the present invention, the on-site monitoring unit for monitoring the location through the fire detection panel and CCTV installed in the building; a fire alarm processing unit that notifies a fire situation to at least one of a user terminal located in the building, a fire station server, and a fire station terminal when a fire is identified; an evacuation route guide unit for calculating an evacuation route for each location based on the location of the fire and guiding it to the user terminal; an evacuated evacuation confirmation unit that obtains the location of the user terminal in the building and calculates the evacuated evacuation status; an access route guide unit for calculating a route from the entrance of the building to the location of the fire or the location of the unevacuated evacuation and guiding the terminal to the fire station; And a smart fire alarm system comprising a lidar scanning 3D data transmission device as described above for processing information guided to the user terminal or the fire station terminal based on the lidar scanning 3D data built in advance for the building. is provided

In an embodiment, the evacuated evacuation confirmation unit may confirm the location of the user terminal by a display unit installed in advance in the building.

According to another aspect of the present invention, determining whether the object size of the lidar scanning 3D data to be transmitted exceeds a reference value; a first processing step of adjusting the object size of the 3D data to be reduced when the object size of the lidar scanning 3D data to be transmitted exceeds a reference value; a second processing step of adjusting the number of vertices and faces of the 3D data to be reduced when the object size of the lidar scanning 3D data to be transmitted is less than or equal to a reference value; And there is provided a lidar scanning 3D data transmission method comprising the step of transmitting the adjusted data.

In an embodiment, the first processing step may include adjusting the scale of the 3D data and extracting the scaled 3D format file.

In an embodiment, the second processing step extracts vertices and faces of the 3D data and adjusts the number of vertices and faces to extract a 3D format file with reduced capacity.

In an embodiment, the reference value may be a preset value so that object quality does not change as the size of the object is reduced.

According to another aspect of the present invention, monitoring the location through the fire detection panel and CCTV installed in the building; When a fire is confirmed, the step of notifying the fire situation to at least one of a user terminal located in the building, a fire station server, and a fire station terminal; an evacuation route guidance step of calculating an evacuation route for each location based on the location of the fire and guiding the user to the user terminal; Acquiring the location of the user terminal in the building, calculating and confirming the evacuation status; an entrance route guidance step of calculating a route from the entrance of the building to the location of the fire or the location of the unevacuated evacuation and guiding the terminal to the fire station; and using the lidar scanning 3D data transmission method as described above, processing information guided to the user terminal or the fire station terminal based on the lidar scanning 3D data built in advance for the building A smart fire alarm method is provided.

In an embodiment, the checking may include checking the location of the user terminal by a display unit installed in advance in the building.

The apparatus and method for transmitting LIDAR scanning 3D data according to an embodiment of the present invention can reduce the size of an object or reduce the number of vertices and faces to reduce the capacity of LIDAR scanning 3D data to efficiently transmit it to an application. there is an effect

In addition, the smart fire alarm system and method according to an embodiment of the present invention propagate the exact ignition location through mobile and share the evacuation route, emergency equipment location, and entry route based on the lidar scanning 3D data to make it faster There is a possible lifesaving effect.

1 is a block diagram illustrating interworking of a smart fire alarm system and a user terminal and a fire station server or a fire station terminal according to an embodiment of the present invention.
2 is a block diagram of a smart fire alarm system according to an embodiment of the present invention.
3 is an example of a screen of a user application provided by a smart fire alarm system according to an embodiment of the present invention, showing (a) fire area information, (b) evacuation route information, and (c) emergency equipment location information; is the screen
4 is an example of a screen of a manager application provided by a smart fire alarm system according to an embodiment of the present invention.
5 is an example of the object size-adjusted lidar scanning 3D data in the lidar scanning 3D data transmission apparatus according to an embodiment of the present invention, (a) before and (b) an example of the lidar scanning 3D data after reduction to be.
6 is an example of lidar scanning 3D data with the number of vertices and faces adjusted in the lidar scanning 3D data transmission apparatus according to an embodiment of the present invention, (a) before and (b) after reduction in lidar scanning 3D; This is an example of data.
7 is a flowchart of a smart fire alarm method according to an embodiment of the present invention.
8 is a flowchart of a lidar scanning 3D data transmission method according to an embodiment of the present invention.
9 is a flowchart of a scale adjustment procedure of a method for transmitting lidar scanning 3D data according to an embodiment of the present invention.
10 is a flowchart of a procedure for adjusting the number of vertices and faces of a method for transmitting 3D data for lidar scanning according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are assigned to the same or similar components throughout the specification.

The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art, and the embodiments described below may be modified in various other forms, The scope is not limited to the following examples. Rather, these examples are provided so as to more fully and complete the present invention, and to fully convey the spirit of the present invention to those skilled in the art.

The terminology used herein is used to describe specific embodiments, not to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly dictates otherwise. Also, as used herein, “comprise” and/or “comprising” refers to the presence of the recited shapes, numbers, steps, actions, members, elements, and/or groups of those specified. and does not exclude the presence or addition of one or more other shapes, numbers, movements, members, elements and/or groups. As used herein, the term “and/or” includes any one and any combination of one or more of those listed items.

Although the terms first, second, etc. are used herein to describe various members, regions and/or regions, it is to be understood that these elements, parts, regions, layers and/or regions are not limited by these terms. . These terms do not imply a specific order, upper and lower, or superiority, and are used only to distinguish one member, region or region from another. Accordingly, a first member, region, or region described below may refer to a second member, region or region without departing from the teachings of the present invention.

In this specification, terms such as “or”, “at least one”, etc. may indicate one of the words listed together, or a combination of two or more. For example, "A or B" and "at least one of A and B" may include only one of A or B, or both A and B.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to drawings schematically illustrating embodiments of the present invention. In the drawings, variations of the illustrated shape may be expected, for example depending on manufacturing technology and/or tolerances. Therefore, the embodiment of the present invention should not be construed as limited to the specific shape of the region shown in this specification, but should include, for example, a change in shape caused by manufacturing.

1 is a block diagram illustrating interworking of a smart fire alarm system and a user terminal and a fire station server or a fire station terminal according to an embodiment of the present invention.

Referring to FIG. 1 , the smart fire alarm system 100 is a system for quickly delivering alarms and disaster information in 3D graphics by a mobile application user when a disaster occurs in a building 2, and provides a disaster situation through mobile. In order to minimize human casualties and facility destruction by disseminating it quickly, and enabling rapid lifesaving and disaster prevention by delivering information on evacuation routes, safety facility location, and rescue information to the building manager and fire department based on 3D building model data. it is a system Here, the smart fire alarm system 100 may be a system installed in a specific building 2 , but is not limited thereto, and may be a system installed in a specific region.

The user terminal 10 may be a mobile device carried by a resident user used in the building 2 . In addition, the user terminal 10 may be a mobile device carried by the manager of the building 2 . Here, the user terminal 10 may be previously registered in the smart fire alarm system 100 as a resident user or manager of the building 2 . Optionally, the user terminal 10 may be an unregistered user who has entered the current building 2 . That is, the user terminal 10 may be a mobile device carried by a visitor who temporarily or temporarily enters the building 2 .

The fire station server 20 may be a server that receives a fire alarm from the smart fire alarm system 100 and controls to plan and perform fire suppression together with the fire alarm. The fire station server 20 may be installed in the building 2 or a nearby fire station in the jurisdiction of the smart fire alarm system 100, or may be installed in an integrated control center.

The fire station terminal 30 may be a mobile device carried by a firefighter who is controlled by fire suppression through the fire station server 20 . In this case, the fire station terminal 30 may be a mobile device for providing fire information or entry information of the building 2 to firefighters who are directly dispatched to the scene.

Here, the user terminal 10 and the fire department terminal 30 may be portable electronic devices capable of computing. Here, the user terminal 10 and the fire department terminal 30 may receive information such as evacuation route information or an entry route from the smart fire alarm system 100 by a dedicated application. In one example, the user terminal 10 and the fire department terminal 30 are a smartphone, a smartpad, a tablet personal computer (PC), a netbook computer, a personal digital assistant (PDA), or It may be a mobile phone or the like, but is not limited thereto.

Accordingly, the smart fire alarm system 100 according to an embodiment of the present invention propagates an accurate ignition location through a mobile device and provides an evacuation route, an emergency equipment location, and an entry route based on the lidar scanning 3D data to the user terminal. (10) or by sharing with the fire station terminal 30, more rapid lifesaving is possible.

Hereinafter, a smart fire alarm system according to an embodiment of the present invention will be described in more detail with reference to FIGS. 2 to 6 .

2 is a block diagram of a smart fire alarm system according to an embodiment of the present invention.

Referring to FIG. 2 , the smart fire alarm system 100 according to an embodiment of the present invention includes a fire detection panel 110 , a CCTV 120 , a communication unit 130 , a control unit 140 , and a database 150 . can do.

The fire detection panel 110 is installed in the corresponding building 2 and can detect flames, ignition, and the like. Here, the fire detection panel 110 may include a fire detection sensor. The fire detection panel 110 may receive a detection signal from a detection sensor provided for each floor and each office in the building 2 and, when a fire is detected, may notify a fire alarm by an alarm or the like. In this case, the fire detection panel 110 may transmit whether a fire is detected to the control unit 140 .

The CCTV 120 may be a camera installed at a plurality of locations within the corresponding building 2 . Here, the CCTV 120 may be installed to operate in conjunction with the fire detection panel 110 . For example, when the fire detection panel 110 detects a fire, the CCTV 120 may transmit field information to the control unit 140 to monitor the corresponding location.

The communication unit 130 may communicate with the user terminal 10 , the fire station server 20 , and the fire station terminal 30 . As an example, the communication unit 130 may include 5th generation communication (5G), long term evolution-advanced (LTE-A), long term evolution (LTE), Bluetooth, bluetooth low energe (BLE), near field communication (NFC), and Wi-Fi. Wireless communication such as (WiFi) communication may be performed, but is not limited thereto.

The control unit 140 may control the overall operation of the smart fire alarm system 100 by controlling the fire detection panel 110 , the CCTV 120 , the communication unit 130 , and the database 150 . Here, the control unit 140 includes a site monitoring unit 141 , a fire alarm processing unit 142 , an evacuation route guide 143 , an unevacuated evacuation check unit 144 , an entry route guide 145 , and a 3D data processing unit 146 . ) may be included.

The on-site monitoring unit 141 may monitor the corresponding location through the CCTV 120 installed in the building 2 . At this time, when the on-site monitoring unit 141 receives a fire location report by the user terminal 10 through the communication unit 130 or receives a fire alarm from the fire detection panel 110, the CCTV 120 corresponding to the fire location ), it is possible to determine whether a fire exists by monitoring the actual site.

When a fire is confirmed by the on-site monitoring unit 141, the fire alarm processing unit 142 reports a fire situation to at least one of the user terminal 10, the fire station server 20, and the fire station terminal 30 located in the building 2 can inform Here, the user terminal 10 may be a mobile device of a user registered in the smart fire alarm system 100 such as a person resident in the corresponding building 2 . Also, the user terminal 10 may be a mobile device of a visitor who temporarily or temporarily enters the building 2 . In addition, the fire station server 20 may be a server of a fire station linked in advance. The fire station terminal 30 may be a mobile device of a firefighter belonging to the fire station server 20 . In this case, the fire alarm processing unit 142 may alarm the fire alarm through a dedicated application of the user terminal 10 or the fire station terminal 30 .

The evacuation route guide unit 143 may guide the user terminal 10 by calculating an evacuation route for each location based on the location where the fire is confirmed. In this case, the user terminal 10 may request guidance of an evacuation route to the smart fire alarm system 100 . Here, the evacuation route guide unit 143 may calculate an evacuation route for each location based on the location where the fire is confirmed and the emergency exit. As an example, the evacuation route guide unit 143 calculates a route from the location of the user terminal 10 requesting guidance of the evacuation route within the building 2 to the emergency exit or the exit of the building 2 to the user terminal 10 can be guided by In this case, the evacuation route guide unit 143 may guide the evacuation route or the location of emergency equipment around the user terminal 10 to the user terminal 10 . As an example, the emergency equipment may be a fire extinguisher, a fire extinguisher, a fire hydrant, or an emergency exit.

3 is an example of a screen of a user application provided by a smart fire alarm system according to an embodiment of the present invention, showing (a) fire area information, (b) evacuation route information, and (c) emergency equipment location information; is the screen

Referring to FIG. 3 , when the on-site monitoring unit 141 confirms the fire area, the user terminal 10 may display the fire area of the building 2 so that the location can be confirmed through a dedicated application (a). ). In this case, the smart fire alarm system 100 may transmit the lidar scanning 3D data for the fire location of the corresponding building 2 to the user terminal 10 .

In addition, when the evacuation route guide unit 143 calculates the evacuation route from the corresponding location to the emergency exit or the building 2 exit according to the request of the specific user terminal 10, the user terminal 10 is located at the corresponding location through a dedicated application. It can be displayed to confirm the evacuation route from (b). In this case, the smart fire alarm system 100 may transmit the lidar scanning 3D data for the evacuation route in the building 2 to the user terminal 10 .

At this time, the user terminal 10 may display the location of the nearby emergency equipment so that it can be confirmed through a dedicated application (c). Here, the smart fire alarm system 100 may transmit lidar scanning 3D data for the location of emergency equipment in the building 2 to the user terminal 10 .

4 is an example of a screen of a manager application provided by a smart fire alarm system according to an embodiment of the present invention.

4, when the on-site monitoring unit 141 confirms the fire area, the user terminal 10 possessed by the manager displays the fire area of the building 2 so that the user can check the location through the dedicated application. can At this time, the smart fire alarm system 100 may transmit the lidar scanning 3D data for the location of the fire in the building 2 to the user terminal 10 . At the same time, the on-site monitoring unit 141 may transmit the CCTV 120 image of the fire location to the user terminal 10 of the management site.

Referring back to FIG. 2 , the evacuated evacuation check unit 144 may obtain the location of the user terminal 10 in the corresponding building 2 to calculate the unaided evacuation status. Here, since it is not easy to check the location by GPS in an indoor such as in the building 2 , the evacuated evacuation check unit 144 checks the location of the user terminal 10 by the display unit installed in advance in the building 2 . can Therefore, the evacuated evacuation confirmation unit 144 calculates the current status of the user terminal 10 existing in the building 2 by location, and selects at least one of the user terminal 10, the fire station server 20, or the fire station terminal 30. can be transmitted At this time, the smart fire alarm system 100 may transmit the lidar scanning 3D data for the location of the evacuated evacuation unit in the corresponding building 2 to the fire station terminal 30 .

Here, the display unit may be a QR mark or a beacon device containing location information. At this time, when the user terminal 10 recognizes the display unit, it is possible to check the corresponding location to create an evacuation route and store it in the user terminal 10 . Therefore, by pre-recognizing a QR mark or beacon for a place or location frequently used by the user and storing it in the user terminal 10, the evacuation route can be quickly confirmed when a situation occurs.

The entry route guide unit 145 may guide the fire station terminal 30 by calculating a route from the entrance of the building 2 to the location of a fire or an unevacuated location. In this case, the fire station terminal 30 may request the smart fire alarm system 100 to guide the entrance route from the feature entrance. Here, the access route guide unit 145 may calculate the access route based on the location of the fire or the location of the isolated unevacuated evacuation. As an example, the evacuation route guide unit 143 may calculate an access route from a specific entrance of the building 2 to a fire location or a location of an unevacuated evacuation station to guide the fire station terminal 30 .

Referring back to FIG. 2 , the 3D data processing unit 146 is a lidar scanning 3D data transmission device according to an embodiment of the present invention, and based on the previously constructed lidar scanning 3D data for the corresponding building, the user terminal ( 10) or information guided to the fire station terminal 30 may be processed. That is, the 3D data processing unit 146 is the user terminal 10 or the fire station terminal 30 so as to graphically display the information in the building 2 through a dedicated application in the user terminal 10 or the fire station terminal 30. It can process the transmitted lidar scanning 3D data.

First, the 3D data processing unit 146 may determine whether the object size of the lidar scanning 3D data to be transmitted to the user terminal 10 or the fire station 30 exceeds a reference value in relation to the photographing time and area. Here, the reference value may be a preset value so that the object quality does not change as the size of the object included in the lidar scanning 3D data is reduced.

When the object size of the lidar scanning 3D data to be transmitted to the user terminal 10 or the fire department terminal 30 exceeds the reference value in relation to the shooting time and area, the 3D data processing unit 146 adjusts the object size of the 3D data to decrease. can In this case, the 3D data processing unit 146 may adjust the scale of the 3D data and extract the scaled 3D format file. Here, the 3D format file includes various properties and data such as color, reflection and transparency, UV coordinates, surface normals, and coordinates, and may have various extensions such as OBJ, GLTF, GLB, DAE, and STL.

5 is an example of the object size-adjusted lidar scanning 3D data in the lidar scanning 3D data transmission apparatus according to an embodiment of the present invention, and (a) an example of the lidar scanning 3D data before reduction and (b) after reduction to be.

Referring to FIG. 5 , the original lidar scanning 3D data as shown in (a) may be an STL file. The scaled lidar scanning 3D data as shown in (b) can be reduced in size by half by specifying a value of 0.5 compared to the original. In this case, the reduced size file may be extracted as an STL file. Here, it can be seen that the image of (b) is reduced in size by half compared to the image of (a), but the quality of the object does not change at all.

If the object size of the lidar scanning 3D data to be transmitted to the user terminal 10 or the fire department terminal 30 is less than or equal to the reference value in relation to the shooting time and area, the 3D data processing unit 146 reduces the number of vertices and faces of the 3D data can be adjusted to In this case, the 3D data processing unit 146 may extract the vertices and faces of the 3D data and adjust the number of vertices and faces to extract the 3D format file with reduced capacity.

6 is an example of lidar scanning 3D data with the number of vertices and faces adjusted in the lidar scanning 3D data transmission apparatus according to an embodiment of the present invention, (a) before and (b) after reduction in lidar scanning 3D; This is an example of data.

Referring to FIG. 6 , the original lidar scanning 3D data as shown in (a) may be an STL file. As an example, (a) may include 76,689 vertices and 153,412 faces. The adjusted lidar scanning 3D data as shown in (b) may be reduced in capacity according to the target number of vertices and faces (percent 0.1, that is, 10% of the current) compared to the original. (b) may contain 7,662 vertices and 15,336 faces. As described above, it can be seen that although the quality of the object deteriorated because the number of vertices and faces decreased, the quality did not decrease significantly compared to the 10% reduction in capacity. Here, the reduced-capacity file can be extracted as an STL file.

In this case, the 3D data processing unit 146 may transmit the scaled or reduced capacity lidar scanning 3D data through the communication unit 130 .

Meanwhile, the 3D data processing unit 146 may apply a webview to visualize the lidar scanning 3D data in a dedicated application. Here, the 3D data processing unit 146 may generate the lidar scanning 3D data as an HTML file for visualization. Also, the 3D data processing unit 146 may visualize the HTML file through the Android web view.

The database 150 may include lidar scanning 3D data 152 and government agencies 154 . The lidar scanning 3D data 152 may be 3D data previously built using a lidar sensor for a corresponding building. In addition, the lidar scanning 3D data 152 may be 3D data including fire response related information to be transmitted to the user terminal 10 or the fire station terminal 30 . Here, the fire response-related information may include evacuation route information, entry route information, unevacuated evacuation status, fire location information, and the like. The related agency government 154 may include information on the fire station server 20 .

Accordingly, the apparatus for transmitting lidar scanning 3D data according to an embodiment of the present invention can reduce the capacity of lidar scanning 3D data and efficiently transmit it to a mobile application. Therefore, the user terminal 10 or the fire department terminal 30 may visualize the lidar scanning 3D data in a web view method in a dedicated application.

Hereinafter, a smart fire alarm method of the present invention will be described with reference to FIGS. 7 to 9 .

7 is a flowchart of a smart fire alarm method according to an embodiment of the present invention.

The smart fire alarm method 200 includes steps for detecting and judging a fire (S210 and S220), a fire notification step (S230), calculating a fire location and guiding an evacuation route (S240 and S250), and checking the location of an unevacuated and an entry route It may include a guide step (S270).

More specifically, as shown in FIG. 7 , first, the smart fire alarm system 100 detects a fire in the building 2 (step S210). At this time, the smart fire alarm system 100 may detect a fire by receiving a fire location report by the user terminal 10 or by receiving a fire alarm from the fire detection panel 110 installed in the building 2 .

Next, the smart fire alarm system 100 monitors the fire location through the fire detection panel 110 and the CCTV 120 installed in the building 2 to determine a fire (step S220). At this time, the smart fire alarm system 100 may check the CCTV 120 of the corresponding location according to the fire detection.

Next, when a fire is confirmed, the smart fire alarm system 100 notifies the fire situation to at least one of the user terminal 10, the fire station server 20, and the fire station terminal 30 located in the building 2 (step S230). ). In this case, the smart fire alarm system 100 may alert the fire alarm through a dedicated application of the user terminal 10 or the fire station terminal 30 .

Next, the smart fire alarm system 100 calculates the fire location (step S240). Here, the smart fire alarm system 100 may calculate the fire location identified from the CCTV 120 to be displayed on the lidar scanning 3D data. In this case, the smart fire alarm system 100 may transmit the lidar scanning 3D data for the fire location of the corresponding building 2 to the user terminal 10 .

Next, the smart fire alarm system 100 calculates an evacuation route for each location based on the location where the fire is confirmed and guides it to the user terminal 10 (step S250). In this case, the user terminal 10 may request guidance of an evacuation route to the smart fire alarm system 100 . Here, the smart fire alarm system 100 may calculate an evacuation route for each location based on the location where the fire is confirmed and the emergency exit. As an example, the smart fire alarm system 100 calculates the route from the location of the user terminal 10 requesting guidance of the evacuation route within the building 2 to the emergency exit or the building 2 exit, and the corresponding user terminal 10 can be guided by In this case, the smart fire alarm system 100 may guide the evacuation route or the location of emergency equipment around the user terminal 10 to the user terminal 10 . As an example, the emergency equipment may be a fire extinguisher, a fire extinguisher, a fire hydrant, or an emergency exit. In this case, the smart fire alarm system 100 may transmit the lidar scanning 3D data for the evacuation route in the building 2 to the user terminal 10 .

Next, the smart fire alarm system 100 obtains the location of the user terminal 10 in the corresponding building 2, calculates and confirms the evacuation status (step S260). Here, since it is not easy to check the location by GPS indoors, such as in the building 2 , the smart fire alarm system 100 checks the location of the user terminal 10 by the display unit installed in advance in the building 2 . can Therefore, the smart fire alarm system 100 calculates the status of each location of the user terminal 10 existing in the building 2 , and uses at least one of the user terminal 10 , the fire station server 20 , or the fire station terminal 30 . can be transmitted At this time, the smart fire alarm system 100 may transmit the lidar scanning 3D data for the location of the evacuated evacuation unit in the corresponding building 2 to the fire station terminal 30 .

Here, the display unit may be a QR mark or a beacon device containing location information. At this time, when the user terminal 10 recognizes the display unit, it is possible to check the corresponding location to create an evacuation route and store it in the user terminal 10 . Therefore, by pre-recognizing a QR mark or beacon for a place or location frequently used by the user and storing it in the user terminal 10, the evacuation route can be quickly confirmed when a situation occurs.

Next, the smart fire alarm system 100 calculates a path from the entrance of the building 2 to the location of the fire or the location of the evacuated evacuation station and guides the fire station terminal 30 (step S270). In this case, the fire station terminal 30 may request the smart fire alarm system 100 to guide the entrance route from the feature entrance. Here, the smart fire alarm system 100 may calculate the entry route based on the location of the fire or the location of the isolated evacuated evacuation. For example, the smart fire alarm system 100 may calculate an access path from a specific entrance of the building 2 to the location of the fire or the location of an evacuated evacuation station, and guide it to the corresponding fire station terminal 30 . Here, the smart fire alarm system 100 may transmit the lidar scanning 3D data for the access route to the building 2 to the fire station terminal 30 .

8 is a flowchart of a lidar scanning 3D data transmission method according to an embodiment of the present invention.

The lidar scanning 3D data transmission method 300 processes and transmits information guided to the user terminal 10 or the fire station terminal 30 based on the lidar scanning 3D data built in advance for the building 2 . For this purpose, the steps of selecting the lidar scanning 3D data to be transmitted and comparing with a reference value (S310 and S320), adjusting the lidar scanning 3D data (S330 and S340), and transmitting the lidar scanning 3D data (step S350) ) may be included.

More specifically, as shown in FIG. 8 , first, the smart fire alarm system 100 selects lidar scanning 3D data to be transmitted (step S310). Here, the lidar scanning 3D data to be transmitted is for fire notification (step S230), evacuation route guidance (step S250), unevacuated evacuation location confirmation (step S260) and entry route guidance (step S270) of the smart fire alarm method 200. It may be any one of lidar scanning 3D data transmitted to the user terminal 10 or the fire department terminal 30 .

Next, the smart fire alarm system 100 determines whether the object size of the lidar scanning 3D data to be transmitted exceeds a reference value in relation to the shooting time and area (step S320). Here, the reference value may be a preset value so that the object quality does not change as the size of the object included in the lidar scanning 3D data is reduced.

As a result of the determination in step S320, if the object size of the lidar scanning 3D data to be transmitted to the user terminal 10 or the fire department terminal 30 exceeds the reference value in relation to the shooting time and area, the smart fire alarm system 100 provides the 3D data Adjust the object size of (step S330).

As a result of the determination in step S320, if the object size of the lidar scanning 3D data to be transmitted to the user terminal 10 or the fire station 30 is less than or equal to the reference value in relation to the shooting time and area, the smart fire alarm system 100 is Adjust the number of vertices and faces (step S340).

Next, the smart fire alarm system 100 transmits the adjusted data to the user terminal 10 or the fire station 30 (step S350). In this case, the smart fire alarm system 100 may transmit the lidar scanning 3D data of which the scale of the object is adjusted or the capacity is reduced.

9 is a flowchart of a scale adjustment procedure of a method for transmitting lidar scanning 3D data according to an embodiment of the present invention.

The scale adjustment procedure 330 of the lidar scanning 3D data transmission method includes a lidar scanning 3D data selection step S331 , a scale adjustment step of the lidar scanning 3D data ( S332 ), and a scaled data file extraction step ( S333 ) can do.

More specifically, as shown in FIG. 9 , first, the smart fire alarm system 100 selects lidar scanning 3D data (step S331). In this case, the smart fire alarm system 100 may select lidar scanning 3D data for information to be guided to the user terminal 10 or the fire station terminal 30 .

Next, the smart fire alarm system 100 adjusts to reduce the scale of the 3D data (step S332). For example, the smart fire alarm system 100 may reduce the size of the lidar scanning 3D data by half by designating the value as 0.5 compared to the original.

Next, the smart fire alarm system 100 extracts the scaled 3D format file (step S333). Here, the 3D format file includes various properties and data such as color, reflection and transparency, UV coordinates, surface normals, and coordinates, and may have various extensions such as OBJ, GLTF, GLB, DAE, and STL.

10 is a flowchart of a procedure for adjusting the number of vertices and faces of a method for transmitting 3D data for lidar scanning according to an embodiment of the present invention.

The adjustment procedure 340 of the number of vertices and faces of the lidar scanning 3D data transmission method includes the steps of extracting the vertices and faces (S341), adjusting the number of vertices and faces (S342), and extracting the adjusted file It may include step S343.

More specifically, as shown in FIG. 10 , first, the smart fire alarm system 100 extracts vertices and surfaces of the lidar scanning 3D data (step S341).

Next, the smart fire alarm system 100 adjusts to reduce the number of vertices and faces of the lidar scanning 3D data (step S342). As an example, the smart fire alarm system 100 may reduce the capacity of the lidar scanning 3D data according to the target number of vertices and faces (percent 0.1, that is, 10% of the current) compared to the original.

Next, the smart fire alarm system 100 extracts the reduced capacity 3D format file (step S343).

The above methods may be implemented by the lidar scanning 3D data transmission device as shown in FIG. 3 or the smart fire alarm system 100 using the same, and in particular, may be implemented as a software program performing these steps, , in this case, these programs may be stored in a computer-readable recording medium or transmitted by a computer data signal combined with a carrier wave in a transmission medium or a communication network. In this case, the computer-readable recording medium may include any type of recording device in which data readable by a computer system is stored.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , changes, deletions, additions, etc. may easily suggest other embodiments, but this will also fall within the scope of the present invention.

100: smart fire alarm system
110: fire detection panel 120: CCTV
130: communication unit 140: control unit
141: field monitoring unit 142: fire alarm processing unit
143: evacuation route guidance unit 144: unevacuated evacuation confirmation unit
145: access route guide 146: 3D data processing unit
150: database 152: lidar scanning 3D data
154: related organization information 10: user terminal
20: fire station server 30: fire station terminal

Claims (12)

a determination unit that determines whether an object size of the lidar scanning 3D data to be transmitted exceeds a reference value;
a first processing unit configured to reduce the object size of the 3D data when the object size of the lidar scanning 3D data to be transmitted exceeds a reference value;
a second processing unit that adjusts to reduce the number of vertices and faces of 3D data when the object size of the lidar scanning 3D data to be transmitted is less than or equal to a reference value; and
LiDAR scanning 3D data transmission apparatus including a transmission unit for transmitting the adjusted data. According to claim 1,
The first processing unit adjusts the scale of the 3D data and extracts the scaled 3D format file LiDAR scanning 3D data transmission apparatus. According to claim 1,
The second processing unit extracts vertices and faces of the 3D data, and adjusts the number of vertices and faces to extract a 3D format file with reduced capacity. According to claim 1,
The reference value is a value set in advance so that object quality does not change as the size of the object is reduced. On-site monitoring unit for monitoring the location through CCTV installed in the building;
a fire alarm processing unit that notifies a fire situation to at least one of a user terminal, a fire station server, and a fire station terminal located in the building when a fire is confirmed;
an evacuation route guide unit for calculating an evacuation route for each location based on the location of the fire and guiding it to the user terminal;
an evacuated evacuation check unit that obtains the location of the user terminal in the building and calculates the evacuated status;
an access route guide unit for calculating a route from the entrance of the building to the location of the fire or the location of the unevacuated evacuation and guiding the terminal to the fire station; and
The lidar scanning 3D data transmission device according to any one of claims 1 to 4 for processing information guided to the user terminal or the fire station terminal based on the lidar scanning 3D data built in advance for the building A smart fire alarm system comprising a. 6. The method of claim 5,
The smart fire alarm system for confirming the location of the user terminal by the display unit installed in advance in the building the evacuation confirmation unit. determining whether an object size of the lidar scanning 3D data to be transmitted exceeds a reference value;
a first processing step of adjusting the object size of the 3D data to be reduced when the object size of the lidar scanning 3D data to be transmitted exceeds a reference value;
a second processing step of adjusting the number of vertices and faces of 3D data to be reduced when the object size of the lidar scanning 3D data to be transmitted is less than or equal to a reference value; and
LiDAR scanning 3D data transmission method comprising the step of transmitting the adjusted data. 8. The method of claim 7,
The first processing step is a lidar scanning 3D data transmission method of adjusting the scale of the 3D data and extracting the scaled 3D format file. 8. The method of claim 7,
The second processing step is a lidar scanning 3D data transmission method of extracting a 3D format file with reduced capacity by extracting vertices and faces of the 3D data and adjusting the number of vertices and faces. 8. The method of claim 7,
The reference value is a value set in advance so that object quality does not change as the size of the object is reduced. monitoring the location through CCTV installed in the building;
When a fire is confirmed, the step of notifying the fire situation to at least one of a user terminal located in the building, a fire station server, and a fire station terminal;
an evacuation route guidance step of calculating an evacuation route for each location based on the location of the fire and guiding the user to the user terminal;
Acquiring the location of the user terminal in the building, calculating and confirming the evacuation status;
an entry route guide step of calculating a route from the entrance of the building to the location of the fire or the location of the unevacuated evacuation and guiding the terminal to the fire station; and
Using the lidar scanning 3D data transmission method according to any one of claims 7 to 10, based on the lidar scanning 3D data built in advance for the building, guided to the user terminal or the fire station terminal A smart fire alarm method comprising the step of processing information. 12. The method of claim 11,
The confirming step is a smart fire alarm method of confirming the location of the user terminal by a display unit installed in advance in the building.

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