KR102488400B1 - Ground pressure measurement and danger warning system using air lidar - Google Patents

Abstract

The present invention provides a landslide measurement and risk warning system using an aerial lidar, which includes: functional units which use a drone unit provided with an RGB camera installed with an airborne lidar sensor to photograph and measure geographic information data of areas expected to be congested, convert the geographic information data into 3D modeling, and inform the level of a risk; and a seating unit and an opening/closing unit which operate in network with the functional units.

Description

Ground pressure measurement and danger warning system using air lidar

The present invention relates to a landslide measurement and risk warning system using an aerial lidar, and more particularly, by using a drone unit equipped with an RGB camera equipped with an aerial lidar sensor to photograph geographic information data of an area expected to landslides. It relates to a ground clearance measurement and danger warning system using an airborne lidar equipped with functional units that convert into 3D modeling after measurement to inform the risk level, and a landing unit and an opening and closing unit that operate in conjunction with them in a network manner.

Landslide is a phenomenon in which the clay layer located deep in the ground or groundwater rises and the entire soil layer moves slowly.

Due to recent climate change, localized torrential rains, tectonic activities such as volcanoes and earthquakes, and landslides in mountainous areas have increased due to the development of mountainous areas, prevention and response are of the greatest interest. Landslides in domestic landslides are largely classified into three categories: surface layer collapse, debris flows, and landslides. Among them, the discussion on landslides began in 1996, and the definition of landslides at this time was a form of landslide in which land masses on the active surface slide integrally, and the movement speed was characterized by a slow speed of 0.01 to 10mm/day. have In particular, the increase in conversion of mountainous areas, such as logging and earth and stone collection for mountain development, causes reckless development, and at the same time, landslides in artificially damaged lands tend to increase. Most landslides occur adjacent to living areas, and the scale of damage is large, so it is urgent to prepare countermeasures.

However, there is no investigation system, guidelines, and regulations for landslides in Korea. Therefore, it is necessary to prioritize the establishment of basic information such as the cause of landslide, scale of occurrence, cause, progress, etc., and the presentation of detailed investigation methods to prepare safety measures.

Accordingly, the present invention uses a drone unit equipped with an RGB camera equipped with an aerial lidar sensor to obtain and analyze geographic information data of an area where landslide is expected, converting it into 3D modeling, and measuring server with built-in functional units that warn the terminal. Wow, I would like to present a specially manufactured drone unit that is networked with them and combines the landing of the drone unit and camera protection.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a ground clearance measurement and danger warning system using an aerial lidar equipped with a drone unit equipped with an RGB camera equipped with an aerial lidar sensor. is to do

In addition, another object of the present invention is to analyze geographic information data taken using a drone unit and convert the predicted level of landslide into 3D modeling to provide a warning system for landslide measurement and risk warning using an aerial lidar equipped with a measurement server. to provide.

In addition, another object of the present invention is to provide a ground clearance measurement and risk warning system using an aerial lidar equipped with a landing unit that assists the landing of a drone unit by being network-linked with a measurement server.

Another object of the present invention is to provide a ground clearance measurement and risk warning system using an aerial lidar equipped with an opening/closing unit that protects an RGB camera installed in a drone unit by networking with a measurement server.

The object of the present invention is not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above problems, the system for measuring landslides and warning danger using an aerial lidar according to an embodiment of the present invention uses terrain information data captured by a drone unit equipped with an RGB camera equipped with an aerial lidar sensor to detect landslides. It can include a measurement server that measures and alerts.

In one embodiment, the measurement server includes a geographic information DB unit for storing raw geographic information data captured by the camera, a geographic information acquisition unit that obtains specific geographic information data from raw geographic information data captured by the camera, and obtaining the geographic information A geographic information analysis unit that analyzes specific geographic information data acquired by the geographic information analysis unit, a displacement measurement unit that measures displacement to predict landslide based on the geographic information data analyzed by the geographic information analysis unit, and is measured by the displacement measurement unit. A 3D conversion unit that converts geographic information data into 3D modeling based on the displacement data, and a danger that sends a danger alert to the terminal when the ground displacement reaches a preset risk level based on the 3D modeling data converted by the 3D conversion unit. It may include a management department.

In one embodiment, the measurement server includes the steps of photographing the terrain using an RGB camera in which the aerial lidar sensor is installed, acquiring the photographed geographic information data, analyzing the acquired geographic information data, and analyzing the analyzed terrain. Measuring displacement based on information data, converting geospatial information data into 3D modeling based on the measured displacement data, comparing ground displacement with a preset risk level based on the converted 3D modeling data, ground The method may further include sending a danger alert to the terminal when the displacement reaches a preset danger level.

In one embodiment, the drone unit includes a drone body connected to the measurement server and capable of flight, a wing part extending in all directions of the drone body to generate power for flight, and installed inside the wing part, It may include a landing unit that assists the descent and landing of the drone unit, and an opening and closing unit that is installed on the lower end of the drone body to protect the mounted camera by moving up and down and enable shooting.

In one embodiment, the wing unit includes a cylinder-shaped wing body, a propeller generating rotational force capable of flying at the distal end of the wing body, an unwinding groove for unwinding the seating unit on one side of the wing body, and the other side of the wing body. It may include a shaft groove for fixing the seating unit on the side, and a stationary magnet installed inside the shaft groove to generate magnetic force for fixation.

In one embodiment, the seating unit is installed inside the wing body to rotate by control, a seating roller inserted into the rotating shaft and rotated by the rotation of the rotating shaft, and wound around the seating roller through the unwinding groove. It may include a seating film having a fixing shaft formed at an end portion to be unwound and fixed to the shaft groove.

In one embodiment, the rotating shaft is provided with a fixing protrusion for fixing the seating roller, and the seating roller is installed to be able to move up and down in a protrusion groove formed therein to assist in unwinding and winding of the seating film. can include

In one embodiment, the adsorption unit includes a plurality of adsorption protrusions that are inserted along the screw thread to be able to move up and down on the seating roller, a guide portion extending from each of the plurality of adsorption protrusions and guiding air movement due to adsorption, and the guide unit. It may include a guide pipe integrally communicating with each other to move air due to adsorption, and an outlet through a side of the seating roller to discharge the air moving in the guide pipe.

In one embodiment, the seat unit is networked with the measurement server, and when the flight ends after data collection, the rotating shaft is rotated by the control of the controller through the measurement server to unwind the seat film on which the seat roller is wound. , the fixing shaft of the seating film unwound from one wing portion is inserted into the shaft groove of the other wing portion and fixed by the magnetic force of the stationary magnet, and the plurality of adsorption protrusions, the guide portion, and the Air is sucked in along the guide pipe, the suction protrusion adsorbs the seating film, and the sucked air is discharged through the guide pipe to the outlet.

In one embodiment, the opening and closing unit includes an accommodating groove formed at the lower end of the drone body and accommodating the camera, a sliding cover installed to be slidably opened and closed in the longitudinal direction of the lower end of the accommodating groove, and a predetermined interval in the accommodating groove. It may include a plurality of lifting cylinders inserted to be able to move up and down, a rotating part installed inside the receiving groove and fastened to the plurality of lift cylinders to be rotatable, and a bracket part installed at the distal end of the plurality of lift cylinders to fix the camera. there is.

In one embodiment, the accommodating groove has cover grooves formed on both sides so that the sliding cover can slide, the bracket portion is installed at the distal end of the plurality of lifting cylinders, and a camera bracket having bracket wings formed on both sides, the It may include a plate portion installed on the lower portion of the camera bracket and installed on the upper portion of the camera to mitigate impact transmitted to the camera.

In one embodiment, the plate unit includes a plate-shaped bracket plate installed under the camera bracket, a plate assembly having a seating groove for the bracket plate to be seated and coupled, and a plurality of plates installed in the seating groove spaced apart from each other at regular intervals to form the bracket. It may include a buffer spring generating an elastic force to mitigate the shock transmitted to the plate and the plate assembly.

In one embodiment, the opening and closing unit is network-connected to the measurement server and can be controlled through a controller to capture the camera when the measurement server operates for data collection, and the sliding cover can be opened and closed by control. , while the plurality of cylinders can be moved up and down by control, the rotating part can be rotated, and when an impact occurs toward the camera, the impact is mitigated by the elastic force of the plurality of buffer springs along the bracket plate and the plate assembly, A feature of fixing the camera by a camera bracket may be further included.

According to the present invention, by using a drone unit equipped with an RGB camera equipped with an aerial lidar sensor, geographic information data of an area expected to be congested is photographed and converted into 3D modeling after measurement to inform the level of risk, and these A ground rollover measurement and danger warning system using an aerial lidar equipped with a landing unit and an opening/closing unit operating in conjunction with a network is provided. Effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the present invention.

1 is a diagram illustrating the overall relationship of a ground clearance measurement and risk warning system using an aerial lidar according to the present invention.
2 is a flow chart of a measurement server of a ground clearance measurement and risk warning system using aerial lidar according to the present invention.
FIG. 3 shows an example of photographing a system for measuring ground clearance and warning a danger using an aerial lidar according to the present invention.
Figure 4 shows an overall embodiment of the drone unit of the ground clearance measurement and danger warning system using aerial lidar according to the present invention.
Figure 5 shows detailed embodiments of the landing unit of the land movement measurement and risk warning system using aerial lidar according to the present invention.
Figure 6 shows an embodiment of the seating unit of the ground rolling measurement and danger warning system using an aerial lidar according to the present invention.
7 illustrates embodiments of an opening/closing unit of a ground rolling measurement and danger warning system using an aerial lidar according to the present invention.
8 shows an assembly diagram and other embodiments of an opening and closing unit of a ground rolling measurement and danger warning system using an aerial lidar according to the present invention.

Hereinafter, various embodiments will be described in more detail with reference to the accompanying drawings. The embodiments described in this specification may be modified in various ways. Certain embodiments may be depicted in the drawings and described in detail in the detailed description. However, specific embodiments disclosed in the accompanying drawings are only intended to facilitate understanding of various embodiments. Therefore, the technical idea is not limited by the specific embodiments disclosed in the accompanying drawings, and it should be understood to include all equivalents or substitutes included in the spirit and technical scope of the invention.

Terms including ordinal numbers, such as first and second, may be used to describe various components, but these components are not limited by the above terms. The terminology described above is only used for the purpose of distinguishing one component from another.

In this specification, terms such as "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded. It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Meanwhile, a “module” or “unit” for a component used in this specification performs at least one function or operation. And a "module" or "unit" may perform a function or operation by hardware, software, or a combination of hardware and software. In addition, a plurality of “modules” or “units” other than “modules” or “units” to be executed in specific hardware or to be executed in at least one processor may be integrated into at least one module. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be abbreviated or omitted.

1 is a diagram illustrating the overall relationship of a ground clearance measurement and risk warning system using an aerial lidar according to the present invention.

Referring to FIG. 1 , a landslide measurement and risk warning system using aerial lidar may include a drone unit 200 equipped with an RGB camera 100 equipped with an aerial lidar sensor and a measurement server 10.

At this time, the measurement server 10 may measure and warn the landslide by photographing the terrain using the drone unit 200 equipped with a camera equipped with an aerial lidar sensor.

Aerial LiDAR (Light Detection and Ranging) surveys measure the distance between points on the ground (buildings, trees, etc.) It is a method of measuring coordinates by emitting a light beam and using its reflection and absorption.

A LiDAR (Light Detection And Ranging) system is installed on an aircraft to scan laser pulses on the ground surface and observe the arrival time of the reflected laser pulses to calculate spatial coordinates of the reflection point and extract topographical information on the ground surface. It is a measurement technique that

Through this, unlike other methods, fully automatic processing is possible, the processing speed is fast, and since it is an active sensor, it is not affected by the weather to some extent.

It is advantageous for coastal and wetland surveying where ground control point surveying is difficult, and digital elevation data production in forests and urban areas hindered by shadows.

In general, airborne LiDAR surveying equipment includes GPS and IMU (inertial navigation unit) so that the position of an object can be calculated from the distance measured from the known point of the LiDAR equipment and the laser pulse.

Aerial laser surveying is a device that acquires height information on the ground using an aircraft. The general performance of the device is about 70kHz laser pulse scanning rate, and it is operated at a ground altitude of 200 to 3,000m. The scan angle is 0° to ±25° (increased by ±1°). Horizontal accuracy represents 1/2,000 × altitude (1σ), and vertical accuracy represents 15 to 35cm (<15cm @1,200m, 1σ; <25cm @2,000m, 1σ) depending on the flight altitude.

In addition, the measurement server 10 includes a geographic information DB unit 11, a geographic information acquisition unit 12, a geographic information analysis unit 13, a displacement measurement unit 14, a 3D conversion unit 15, and a risk management unit ( 16) may be included.

The geographic information DB unit 11 may store geographic information raw data photographed using the camera 100 .

The geographic information acquisition unit 12 may acquire specific geographic information data from raw geographic information data stored through the camera 100 .

In this case, the specific geographic information data refers to data obtained by enlarging only a specific region among raw geographic information data.

The geographic information analyzer 13 may analyze specific geographic information data acquired by the geographic information acquisition unit 12 .

The displacement measuring unit 14 may measure displacement to predict landslide based on the geographic information data analyzed by the geographic information analysis unit 13 .

Here, displacement is a vector quantity obtained by subtracting the value of the initial position from the value of the final position in physics, that is, the difference between the final position and the initial position of a point.

The 3D conversion unit 15 may convert geographic information data into 3D modeling based on the displacement data measured by the displacement measuring unit 14 .

The management unit 16 may transmit a danger alert to the terminal when ground displacement reaches a predetermined risk level based on the 3D modeling data converted by the 3D conversion unit 15 .

At this time, the preset risk level is a risk level of landslide when it exceeds 1 m in one embodiment, and a danger alert can be transmitted to the terminal due to concerns about ground deformation such as a landslide.

FIG. 2 is a flow chart of the measurement server 10 of the system for measuring landslides and alerting danger using aerial lidar according to the present invention.

Step S110: The topography is photographed using an RGB camera equipped with an aerial lidar sensor.

Step S120: Obtain specific geographic information data from the captured geographic information raw data.

Step S130: Analyzing the obtained specific geographic information data.

Step S140: Displacement is measured based on the analyzed geographic information data.

Step S150: Based on the measured displacement data, geographic information data is converted into 3D modeling.

Step S160: Based on the converted 3D modeling data, ground displacement is compared with a preset risk level.

Step S170: When the ground displacement reaches a preset danger level, a danger alert is sent to the terminal.

Effects of the embodiment according to the functional units are described in detail as follows.

FIG. 3 shows an example of photographing a system for measuring ground clearance and warning a danger using an aerial lidar according to the present invention.

The measurement server is networked with a physical controller such as a remote controller for organic linkage of the drone unit, camera, seating unit, and opening/closing unit, which will be described later, and the drone unit, camera, seating unit, and It is possible to control the opening and closing unit.

Referring to FIG. 3, the drone unit 200 is network-linked with the geographic information DB unit 11 so that a camera equipped with an aerial lidar sensor takes pictures. ) can control the operation signal.

In particular, the geographic information DB unit 11 can be network-connected to a physical controller such as a remote controller to control the operation signal of the drone unit 200, so that the drone unit 200 can be easily controlled.

In one embodiment, a photographing signal may be transmitted from the geographic information DB unit 11 to the drone unit 200 so that the drone unit 200 flies, thereby photographing the terrain through a camera.

In one embodiment, landslides may be predicted by analyzing geographic information data captured by a camera, and damage such as landslides in a nearby area due to ground deformation may be prevented.

FIG. 4 shows an overall embodiment of the drone unit 200 of the ground clearance measurement and danger warning system using aerial lidar according to the present invention.

Referring to FIG. 4 , the drone unit 200 may include a drone body 210 and wing parts 220.

The drone body 210 may be provided in the form of a drone so as to be connected to the measurement server 10 and fly.

At this time, the shape of the drone is not limited, but it is preferable to be provided in a streamline shape to mitigate impact due to air flow and fluid so as to be suitable for flying in the sky.

The wings 220 may extend in all directions of the drone body 210 to generate power capable of flight.

In addition, a propeller 222 may be further provided at the distal end of each wing 220 to generate power capable of flight.

5 and 6 show detailed embodiments of the landing unit 300 of the landslide measurement and risk warning system using aerial lidar according to the present invention.

Referring to FIGS. 5 and 6 , the drone unit 200 may further include a landing unit 300 installed inside the wing 220 to assist the drone unit 200 in descending and landing.

The wing unit 220 may include a wing body 221, a propeller 222, an unwinding groove 223, an axis groove 224, and a stationary magnet 225.

The wing body 221 is provided in a cylindrical shape, and the inside may be empty.

The unwinding groove 223 may be formed to unwind the seating unit 300 on one side of the wing body 221 .

The shaft groove 224 may be formed to fix the seating unit 300 to the other side of the wing body 221 .

The stationary magnet 225 may be installed inside the shaft groove 224 to generate magnetic force for fixing the seating unit 300 .

In addition, the seating unit 300 may include a rotating shaft 310 , a seating roller 320 , and a seating film 330 .

The rotating shaft 310 may be installed inside the wing body 221 to rotate by control along the longitudinal direction.

In addition, a fixing protrusion 311 for fixing the seating roller 320 may be formed on the rotating shaft 310 .

The seating roller 320 may be provided in a roller shape to be inserted into the rotation shaft 310 and rotated by the rotation of the rotation shaft 310 .

In addition, the seating roller 320 may include an adsorption unit 321 installed in a protruding groove 320a formed therein so as to be able to move up and down to assist unwinding and winding of the seating film 330 .

The adsorption unit 321 may include an adsorption protrusion 3211 , a guide unit 3212 , a guide pipe 3213 , and an outlet 3214 .

A plurality of adsorption protrusions 3211 may be provided in a protrusion shape so as to be inserted into the seating roller 320 along a screw thread so as to be able to move up and down.

The guide portion 3212 may extend downward from each of the plurality of suction protrusions 3211 and may be provided in an oblique shape to guide air movement due to suction.

At this time, the guide part 3212 is provided in a gradually narrower oblique shape to form an adsorption force on the adsorption part 321, and may be adsorbed by forming air pressure.

The guide pipe 3213 may be integrally communicated with the guide part 3212 to move air due to adsorption.

The outlet 3214 may be formed through a side surface of the seating roller 320 to discharge air moving in the guide pipe 3213 .

The seating film 330 may be wound around the seating roller 320 and unwound through the unwinding groove 223 to be fixed to the shaft groove 224 so that a fixed shaft 330a is formed at the distal end.

The assembly relationship according to the above configurations and the effect of the embodiment are described in detail as follows.

In the seat unit 300, the seat roller 320 into which the rotary shaft 310 is inserted into the wing 220 is inserted along the longitudinal direction.

A seating film 330 is wound along the circumference of the seating roller 320 .

An unwinding groove 223 is formed on one side of the wing unit 220 and an axis groove 224 is formed on the other side of the wing unit 220 .

A guide portion 3212 having a screw thread is formed inside the seating roller 320 so that the suction protrusion 3211 is inserted therein.

A guide pipe 3213 extends below the guide portion 3212 and communicates with the outlet 3214 through the side of the seating roller 320 .

In one embodiment, the landing unit 300 operates for the landing of the drone unit 200 when it is network-connected to the geographic information DB unit 11 and finally stores geographic information data.

In one embodiment, the seating unit 300 rotates the rotational shaft 310 for landing of the drone unit 200 while the seating roller 320 unwinds the seating film 330 so that the stationary magnet 225 of the shaft groove 224 The fixing shaft 330a is fastened to ) to spread the seating film 330 .

In one embodiment, the landing unit 300 transmits a shooting signal to the drone unit 200 through the geographical information DB unit 11 during the initial flight of the drone unit 200 connected to the geographical information DB unit 11 through a network. if you do it can work.

At this time, as the rotating shaft 310 reversely rotates, the adsorption protrusion 3211 of the adsorption unit 321 protrudes and is adsorbed to the mounting film 330 to suck in air and discharge it to the outlet 3214 through the guide pipe 3213. do.

Then, the seating roller 320 may wind the seating film 330 along the unwinding groove of the wing unit 220 by reverse rotation of the rotating shaft 310 .

7 and 8 show an assembly view and embodiments of the opening and closing unit 400 of the landslide measurement and risk warning system using an aerial lidar according to the present invention.

Referring to FIGS. 7 and 8 , the drone unit 200 may further include an opening/closing unit 400 that is installed on the lower end of the drone body 210 to protect the mounted camera by moving up and down and enable shooting.

The opening/closing unit 400 may include a receiving groove 410 , a sliding cover 420 , an elevating cylinder 430 , a rotation unit 440 , and a bracket unit 450 .

The accommodating groove 410 may be formed at the lower end of the drone body 210 to form a space capable of accommodating a camera.

In addition, cover grooves 410a may be formed on both sides of the receiving groove 410 so that the sliding cover 420 is slidable.

The sliding cover 420 may be installed to enable sliding opening and closing in the longitudinal direction of the lower end of the receiving groove 410 .

A plurality of elevating cylinders 430 may be inserted into the receiving groove 410 at regular intervals to be elevating.

At this time, the elevating cylinder 430 may be a stepped cylinder capable of elevating, or may be provided in the structure of a spring or a screw thread therein so as to be able to elevate.

As shown in FIG. 8 , the rotation unit 440 may be installed inside the receiving groove 410 and may be rotatably provided by engaging with the plurality of elevating cylinders 430 .

The bracket unit 450 may be provided in a bracket shape to fix the camera by being installed at the distal end of the plurality of elevating cylinders 430 .

In addition, the bracket unit 450 may include a camera bracket 451 installed at the distal end of the plurality of elevating cylinders 430 and having bracket wings 451a formed on both sides.

In addition, the bracket unit 450 may include a plate unit 452 installed below the camera bracket 451 and coupled to an upper portion of the camera to mitigate impact transmitted to the camera.

The plate unit 452 may include a bracket plate 4521 , a plate combination body 4522 , and a buffer spring 4523 .

The bracket plate 4521 may be provided in a plate shape installed under the camera bracket 451 .

The plate combination body 4522 may be provided in a plate shape having a seating groove 4522a having an open top so that the bracket plate 4521 is seated and coupled thereto.

A plurality of buffer springs 4523 may be installed in the seating groove 4522a at a predetermined interval to generate an elastic force to relieve shock transmitted to the bracket plate 4521 and the plate assembly 4522 .

The assembly relationship according to the above configurations and the effect of the embodiment are described in detail as follows.

In the opening/closing unit 400, an accommodation groove 410 is formed in the lower part of the drone body 210, and the rotating part 440 is rotatably assembled therein.

On both sides of the accommodating groove 410, cover grooves 410a in which the sliding cover 420 is slidably built are formed.

A plurality of elevating cylinders 430 are vertically assembled on the lower surface of the rotating part 440 at regular intervals.

A bracket unit 450 is installed under the plurality of elevating cylinders 430, and a camera is assembled under the bracket unit 450.

At this time, the bracket unit 450 includes a camera bracket 451, a bracket plate 4521, and a plate assembly 4522 in which a plurality of buffer springs 4523 are installed.

At this time, the camera bracket 451 is assembled to the bracket plate 4521 by bracket wings 451a formed on both sides of the camera bracket 451 .

In one embodiment, the opening/closing unit 400 is networked with the geographic information DB unit 11 and operates to protrude the camera 100 equipped with the aerial lidar sensor by control.

In one embodiment, the opening/closing unit 400 transmits a photographing signal from the geographic information DB unit 11 to the opening/closing unit 400, and the sliding cover 420 slides along the cover groove 410a to be opened.

Next, the plurality of elevating cylinders 430 protrude the camera 100 downward in parallel, and the rotation of the rotation unit 440 rotates the camera 100 to adjust the shooting point.

In one embodiment, the opening/closing unit 400 operates in conjunction with the geographic information DB unit 11, so that when an impact occurs toward the camera, the geographic information DB unit 11 opens the bracket plate 4521 and the plate assembly 4522. Accordingly, the transmitted shock may be alleviated by generating elastic force of the plurality of buffer springs 4523 .

In one embodiment, the opening/closing unit 400 may firmly fix the camera by the camera bracket 451 .

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and is common in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, various modifications are possible by those with knowledge of, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

Measurement Server (10)
Terrain information DB unit (11)
Topographic information acquisition unit (12)
Geospatial information analysis unit (13)
Displacement measurement unit (14)
3D conversion unit (15)
Risk Management Department (16)
camera(100)
Drone unit (200)
Drone body (210)
wing part (220)
wing body(221)
Propeller(222)
Unwind groove (223)
shaft groove(224)
Stationary Magnet(225)
Seating unit (300)
axis of rotation (310)
Fixed protrusion (311)
Seating roller (320)
Protrusion groove (320a)
Adsorption unit (321)
Adsorption protrusion (3211)
Thread (321a)
Guide part (3212)
Guide pipe (3213)
Outlet (3214)
Seating Membrane(330)
Fixed axis (330a)
Opening and closing unit (400)
Receiving groove (410)
Cover groove (410a)
sliding cover(420)
Lifting Cylinder (430)
rotating part (440)
Bracket part (450)
Camera Bracket(451)
Bracket wing (451a)
Plate part 452
Bracket Plate (4521)
Plate Combination (4522)
Seating groove (4522a)
Buffer Spring (4523)

Claims (3)

A measurement server that measures and warns of landslide using geographic information data captured by a drone unit equipped with an RGB camera equipped with an aerial lidar sensor;
In the land movement measurement and risk warning system using aerial lidar, which includes,
The measurement server,
a topographical information DB unit for storing captured topographical information raw data;
a geographic information acquisition unit for obtaining specific geographic information data from geographic information raw data photographed by the camera;
a geographic information analyzer analyzing specific geographic information data acquired by the geographic information acquisition unit;
a displacement measuring unit for measuring a displacement to predict landslide based on the topographical information data analyzed by the topographical information analyzing unit;
a 3D conversion unit that converts geographic information data into 3D modeling based on the displacement data measured by the displacement measuring unit;
a risk management unit for transmitting a danger alert to a terminal when ground displacement reaches a predetermined risk level based on the 3D modeling data converted by the 3D conversion unit;
including,
The measurement server,
photographing the terrain using an RGB camera equipped with the aerial lidar sensor;
Obtaining photographed geographic information data;
Analyzing the obtained geographic information data;
measuring displacement based on the analyzed geographic information data;
Converting geographic information data into 3D modeling based on the measured displacement data;
Comparing ground displacement with a preset risk level based on the converted 3D modeling data;
Transmitting a danger alert to the terminal when the ground displacement reaches a preset danger level;
Including more,
The drone unit,
a drone body connected to the measurement server and capable of flying;
Wings extending in all directions of the drone body to generate power for flight;
a landing unit installed inside the wing unit to assist the drone unit in descending and landing;
including,
The wing part,
Cylinder-shaped wing body;
a propeller generating rotational force capable of flying at the distal end of the wing body;
an unwinding groove for unwinding the seating unit on one side of the wing body;
Shaft grooves for fixing the seating unit to the other side of the wing body;
A stationary magnet installed inside the shaft groove to generate magnetic force for fixation;
including,
The seating unit,
a rotating shaft installed inside the wing body to rotate by control;
a seating roller inserted into the rotating shaft and rotated by rotation of the rotating shaft;
a seating film wound around the seating roller, unwound through the unwinding groove, and having a fixing shaft formed at an end portion so as to be fixed to the shaft groove;
including,
The axis of rotation is
A fixing protrusion for fixing the seating roller is formed,
The seating roller,
an adsorption unit installed in a protruding groove formed therein so as to be able to move up and down to assist unwinding and winding of the seating film;
including,
the adsorption unit,
A plurality of adsorption protrusions inserted along the screw thread so as to be able to move up and down in the seating roller;
a guide part extending from each of the plurality of adsorption protrusions to guide air movement due to adsorption;
a guide pipe integrally communicating with the guide unit to move air due to adsorption;
an outlet through a side of the seating roller to discharge the air moving in the guide pipe;
including,
The seating unit,
Networked with the measurement server,
At the end of the flight after data collection, the rotating shaft rotates under the control of the controller through the measurement server to unwind the seating film on which the seating roller is wound,
The fixing shaft of the seating film unwound from one wing part is inserted into the shaft groove of the other wing part and fixed by the magnetic force of the stationary magnet,
During winding and unwinding of the seating film, air is sucked along the plurality of adsorption protrusions, the guide part, and the guide pipe so that the adsorption protrusion adsorbs the seating film;
A ground rollover measurement and danger warning system using an aerial lidar, further comprising a feature in which the air sucked into the outlet through the guide pipe is discharged. delete delete

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