KR101848324B1 - A system that monitors changes in the location of features and applies them to digital maps - Google Patents

Abstract

The present invention relates to a system for monitoring changes in a location of terrain features to be applied to a digital map. More specifically, the present invention can reliably detect an error of coordinate data of the digital map by stably performing a role of a reference point. Especially, by periodic aerial photographing, GPS position information in a photographing area is compared with the actual location coordinates of the corresponding photographing area, and terrain change information is immediately reflected on the digital map to improve accuracy of the digital map. Therefore, durability of the modules constituting the system is prevented from being reduced due to thermal degradation.

Description

Technical Field [0001] The present invention relates to a system for monitoring the change of a position of a feature and applying the same to a digital map,

The present invention relates to a system for monitoring a change in the position of a feature point in a digital map technology and applying the same to a digital map. More specifically, the present invention can reliably perform a role of a reference point, In particular, since it is possible to periodically take an aerial photograph using a drone, the GPS position information in the photographing area is compared with the actual position coordinates of the corresponding photographing area, and the terrain change information is immediately reflected on the digital map, The present invention relates to a system for monitoring a change in a position of a feature to prevent a shortening of the lifespan due to thermal degradation of modules constituting the fixture, and to apply the feature to a digital map.

A digital map is a digital map that is obtained by analyzing various numerical information obtained by surveying maps, aerial photographs, and satellite images, and numerically editing the numerical information.

Therefore, the digital map must be accurately applied to the displayed topographical image so that the user can easily obtain the geographical / geographical information while viewing the map, and the drawn topographical image should be accurately applied to the geographical information It should be precisely shown, mainly used for various cadastral maps and topographical maps.

These digital maps are produced from the images collected through aerial photographing and ground photographing, and the collected images are completed with a complete image through a mutual connection between neighboring images, and are produced as a digital map.

However, in order to interconnect the collected images, a reference for accurate connection between images is required. In order to accurately capture the reference, it is necessary to take an accurate aerial image image and a ground image image according to the GPS coordinates.

That is, the aerial photographing and the ground photographing are accurately performed according to the GPS coordinates, and the accurate aerial image image and the ground image image are collected according to the GPS coordinates.

For this purpose, a reference point serving as a reference of photographing is required, and a device capable of externally displaying the reference point is also required.

Conventionally, various apparatuses have been proposed in which a camera receives a signal or light so that the position of the corresponding point can be recognized.

Conventionally, most of the conventional devices have a technology for allowing the camera to accurately receive and photograph light irradiated by itself, and in particular, there is no function of protecting itself from external pollution and managing itself, and thus the life of the device is short .

Of course, such a problem prevents the reference point performed by the apparatus from fully exercising, and thus it has been an urgent problem to be solved.

In addition, there has also been a disadvantage in that the modules constituting the system are accelerated to deteriorate due to heat, shortening the service life and shortening the maintenance period.

In addition, the aerial photographing for acquiring the image image is performed by using an airplane. Since the altitude is very high, not only a super-precise digital camera is used but the airplane is expensive at every time of launching, If it does not work properly, it has to be floated again, which has many inconveniences and limitations in terms of time cost.

Korea Patent Registration No. 10-1108257 (2012.01.13.) 'Digital Map System for Updating Coordinate Data of Digital Map in Real Time'

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems in the prior art, and it is an object of the present invention to provide an apparatus and method for accurately detecting an error of a coordinate data of a digital map by stably performing a role of a reference point, It is possible to improve the accuracy of the digital map by immediately reflecting the terrain change information on the digital map by comparing the GPS position information in the photographing area with the actual position coordinate of the corresponding photographing area and shortening the life due to thermal deterioration of the modules constituting the system The present invention provides a system for monitoring a change in a position of a feature to be prevented from being displayed and for applying the same to a digital map.

The present invention provides a GPS device 11, a camera 12 for photographing a feature, a receiver 13 for receiving a coordinate signal from a transmitter 700, a GPS device 11, A camera 12 and a controller 14 for controlling the operation of the receiver 13, and a photographing apparatus 10 installed in the drones 1000; A video image DB 21 for storing video images collected by the photographing apparatus 10, a picture image DB 22 for storing a picture picture based on the picture image, An image editing module 23, a coordinate synthesizing module 24 for synthesizing GPS coordinates in a video image or a picture image, and a digital map management server 20 including an image drawing module 25 for creating a drawing image based on the image image )Wow; (A) having a transmitter (700) for transmitting a coordinate signal of an installed position to the receiver (13), the system comprising: The image image DB 21, the illustrated image DB 22, the image editing module 23, the coordinate synthesizing module 24, and the image drawing module 25, which constitute the numerical map management server 20, Mounted inside; On the front surface of the housing 2000, a housing door 2100 is openable and closable; A pair of first and second coolers 2200 and 2300 are installed on both sides of the upper surface of the housing 2000; On the upper sides of both sides of the housing 2000, a rectangular exhaust port 2400 is formed. An upper filter 2500 is fixed to the inside of the housing 2000 of the exhaust port 2400; A discharge guide 2600 disposed in the housing 2000 so as to guide the wind forcedly blown from the first and second coolers 2200 and 2300 to the discharge port 2400 is disposed obliquely toward the discharge port 2400, (2000); An exhaust control plate 2800 is installed on both outer surfaces of the housing 2000, which is the outside of the exhaust port 2400, One end of the exhaust throttle plate 2800 is integrally fixed to the outer peripheral surface of the bushing 2820; The bushing 2820 is fitted with a rotary shaft 2840; The rotary shaft 2840 is rotatably fixed on a fixed block 2860 fixed to both outer surfaces of the housing 2000; One end of the torsion spring 2880 is fixed to the exhaust throttle plate 2800 and the other end of the torsion spring 2880 is fixed to the outer surface of the housing 2000 so that the exhaust throttle plate 2800 is always elastically biased ; And a stretching member 2900 is fixed to the inner surface of the exhaust throttle plate 2800. The present invention provides a system for monitoring a change in position of a feature item and applying the same to a digital map.

According to the present invention, it is possible to accurately detect the error of the coordinate data of the digital map by stably performing the role of the reference point, and in particular, the GPS position information in the photographing region and the actual position coordinates of the photographing region The terrain change information is immediately reflected on the digital map to improve the accuracy of the digital map, and the module constituting the system can be prevented from shortening the service life due to thermal deterioration.

1 is a system diagram for explaining the present invention.
2 is a cross-sectional view showing a reference point applying apparatus of the present invention.
3 is a plan view showing a reference point applying apparatus of the present invention.
4 to 6 are operation diagrams for explaining the operating state of the present invention.
7 is an exemplary partial cross-sectional view of a dron constituting a system according to the present invention.
8 is an exemplary photograph of an ultra small gas turbine generator employed in the drones of FIG.
9 is an exemplary view of a dustproof material installed in the drones of Fig.
10 is an illustration of an enclosure applied to a system according to the present invention.
11 is a partial cross-sectional view of the housing of Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

1 to 3, the present invention includes a reference point applying device A installed at a specific photographing position, a photographing device 10 used for aerial photographing, And a digital map management server 20, which is a kind of computer system for completing a figure image based on the digital map and producing a precise digital map.

At this time, the photographing apparatus 10 is mounted on a drone, and the numerical map management server 20 is provided at a remote place in a state where the photographing apparatus 10 can communicate wirelessly with the photographing apparatus 10.

The reference point applying apparatus A includes a foundation 100, a rotary driving device M installed on the foundation 100, a solar cell 200 installed on the foundation 100, A cleaning liquid supply device 300 for cleaning the battery 200, an air injection device 400 for removing dust adhering to the solar cell 200, a foreign matter removing member 500 for removing foreign substances adhering to the solar cell 200 A transmitter 700 for transmitting an installation position coordinate signal of the reference point applying apparatus A and an illuminance sensor 800 provided on the foundation 100. The elevator 600 is installed on the foundation 100, (I) for inputting a control signal to the control unit 900, and a display unit (not shown) for indicating the operating state of the electronic component ds).

The base 100 includes a base 110 as a base, a rotor 120 rotatably installed on the base 110, and a foreign matter receiving mechanism 130 installed on the base 100 Equipped.

In this case, the base 110 includes a first side plate 111 formed upward, a bottom plate 112 connected to the bottom of the first side plate 111 and extending laterally, And a second side plate 113 opposed to the first side plate 111.

The first side plate 111 is formed on the inner side and has a rounded circular seating portion 111a facing inwardly, an insertion hole 111b opened upward, an insertion hole 111b communicating with the insertion hole 111b, And a plurality of cleaning liquid discharge holes 111c opened through the rotary seating portion 111a.

A main line 111d communicating with the insertion hole 111b is formed along the longitudinal direction of the first side plate 111 and a plurality of cleaning liquid discharge holes 111c are branched from the main line 111d.

The lower plate 112 is connected to the lower portion of the first side plate 111 and extends laterally.

In addition, the second side plate 113 is formed on the inside and has a rounded circular receiving portion 113a formed therein and an opening hole 113b opened laterally and disposed in the lower portion of the rotating receiving portion 113a, And is connected to the lower plate 112 so as to face the first side plate 111 and extends upward to form the rotor accommodating space a together with the first side plate 111 and the lower plate 112.

The rotating seat 113a is provided with a foreign substance removing member mounting groove 113c formed therein so that the foreign substance removing member 500 is installed in the foreign substance removing member mounting groove 113c.

The base 110 is provided with a front plate 114 and a rear plate 115 for connecting the first side plate 111 and the second side plate 113 at front and rear sides, Space.

In addition, the rotator 120 includes a main body having an elevating device accommodating space 121 formed therein, a solar panel mounting part 122 formed on the periphery of the main body, Both ends of which are rotatably fixed to the front plate 114 and the rear plate 115 of the base 110 and which have a through hole 123 through which the elevating device accommodating space 121 is opened, (111a, 113a).

The foreign substance receiving mechanism 130 is upwardly opened and has a foreign substance receiving space 131 formed therein and is removably inserted into the opening hole 113b of the second side plate 113, As shown in FIG.

At this time, it is preferable that a handle 132 is provided at the end of the foreign substance receiving mechanism 130 so that the foreign substance receiving mechanism 130 can be easily inserted and removed from the opening hole 113b of the second side plate 113.

The rotary driving device M is installed on the front plate 114 or the rear plate 115 of the base 110 and transmits the power for rotating the rotary 120. [

In this case, a conventional motor can be applied to the rotary driving device M.

The solar cell 200 includes a plurality of solar panels 210 installed on the solar panel installation part 122 of the rotator 120 and converting solar energy into electric energy, A battery 220 is installed in the accommodation space 121 to store electric energy from the solar panel 210 and supplies electricity to the electric components of the present invention.

The solar cell 200 converts solar energy into electric energy, and a detailed description thereof will be omitted.

The cleaning liquid supply device 300 includes a cleaning liquid receiver 310 installed on the first side plate 111 of the base 110 to receive a cleaning liquid and a second side plate 111 connected to the cleaning liquid container 310, An injection port 320 inserted into the insertion hole 111b of the cleaning liquid receiver 310 and an electromagnetic valve 330 controlling the flow of the cleaning liquid accommodated in the cleaning liquid receiver 310. [

Here, the electromagnetic valve 330 is preferably installed in the injection port 320, and a detergent containing water, detergent or the like may be used as the cleaning liquid.

In addition, the air injection device 400 includes an air generating device 410 installed on the first side plate 111 of the base 110, And a plurality of nozzles 430 which are respectively installed on the air injection holes (not shown) formed in the air injection lines 420 and which are directed to the rotor 120.

In this case, the air generating device 410 is a conventional one using a fan or the like.

The foreign substance removing member 500 is installed on the rotating seat 113a formed on the second side plate 113 of the base 110 so as to abut the solar panel 210 when the rotating body 120 rotates , The cleaning liquid and the foreign substance adhering to the solar panel 210 are wiped off.

At this time, the foreign material removing member 500 is preferably made of a fiber material.

The elevating device 600 includes a screw driving device 610 installed below the elevating device accommodating space 121 of the rotator 120 and a screw driving device 610 installed in the screw driving device 610, A guide 630 installed in the elevating device accommodating space 121 of the rotator 120 and disposed in parallel with the screw 620, The elevating member 640 is engaged with the screw 620 through a thread and the other end is movably installed in the guide 630 and is moved up and down in the longitudinal direction of the guide 630 along the rotating direction of the screw 620. [ And a transmitter mounting part 650 which is elongated in a direction parallel to the guide 630 and has one end mounted on the elevating member 640 and the other end drawn out to the outside through the through hole 123 of the rotor 120 Equipped.

In this case, the screw driving device 610 may be a conventional one including a motor and the like.

The transmitter 700 is installed in the transmitter mounting unit 650 of the elevating apparatus 600 and is operated and controlled by the controller 900 to adjust the coordinate signal indicating the position of the reference point applying apparatus A to a predetermined intensity And transmits it wirelessly. For reference, the coordinate signal may include a GPS coordinate value at which the reference point applying device A is located and an identification code for identifying the reference point applying device A. The coordinate signal including the GPS coordinate value and the identification code may be a usual A / D conversion, etc., so that the photographing apparatus 10 installed on an airplane or a vehicle traveling on an adjacent area can receive and process the image.

Meanwhile, the photographing apparatus 10 according to the present invention receives coordinate signals from at least three reference point applying apparatuses A, and the reference point applying apparatuses A transmit coordinate signals at the same intensity, The user can track his / her position in real time using the intensity difference of the received coordinate signal, and a detailed description thereof will be described later.

The illuminance sensor 800 is installed on the base 100 and is controlled by the controller 900 to sense the illuminance of the external environment and output an illuminance signal.

The control unit 900 is installed in the foundation 100 and includes a rotary driving device M, a solar cell 200, a cleaning liquid supply device 300, an air injection device 400, a screw driving device 610 The transmitter 700 and the illuminance sensor 800 and controls the operation of the illuminance sensor 800 so that the GPS coordinates of the spot where the foundation 100 is installed can be input and transmitted as the coordinate signal.

In addition, the controller 900 receives the illuminance signal from the illuminance sensor 800, operates the electrical components during the day, and stops the electrical components during the night.

Here, the control unit 900 controls the operation of the electric components by supplying the electric power charged in the solar cell 200 to the respective electric components.

The control unit 900 transmits a coordinate signal indicating the position of the input reference point applying apparatus A through the transmitter 700. [

The input device i is installed on the foundation 100 and is controlled by the control unit 900 and inputs control signals to the control unit 900 so that the respective electric components are controlled to operate.

In addition, the display device ds is installed in the base 100 and is controlled by the control unit 900 so that the operating states of the respective electric components are outputted.

On the other hand, the photographing apparatus 10 includes a GPS device 11 installed on a drones 1000 (see FIG. 7), a camera 12 photographing a land feature, a transmitter 700 of a reference point applying device A, A receiver 13 for receiving a coordinate signal from the controller 14, and a controller 14 for controlling the operation thereof.

At this time, the controller 14 compares the GPS position signal from the GPS device 11 with the coordinate signal of the reference point applying device A from the receiver 13, If errors above the signal and reference occur, fly the drones 1000 in a direction that eliminates the error and wait until the correct point is reached.

Thus, the present invention can acquire a video image of an accurate photographing point.

In addition, the controller 14 stores the dispatch intensity of the coordinate signal transmitted from the reference point applying apparatus A, and determines the strength of the received coordinate signal on the basis of the intensity of the received coordinate signal, thereby tracking the distance of the reference point applying apparatus A .

The digital map management server 20 includes a video image DB 21 for storing video images collected by the photographing apparatus 10, a picture image DB 22 for storing a picture picture based on the picture image, An image editing module 23 for composing and editing a plurality of video images, a coordinate synthesizing module 24 for synthesizing GPS coordinates in a video image or a drawn image, and a video image drawing Output module 26 for outputting a video image and a picture image and generating and inputting an input signal for the operation of the digital map management server 20 and a GIS (Geographic Information System) And an information link module 27 for linking concrete geographical and geographical information based on the map information to the figure image so as to produce a numerical map in which the user can output the related information when the corresponding information of the digital map is clicked.

At this time, the image editing module 23 links and edits a plurality of image images collected by the photographing device 10 to complete a single image image. In order to connect different image images, adjustment processing such as size and resolution .

In addition, a general graphic editing application may be applied to the image editing module 23, and a known and common program may be applied to output and edit a three-dimensional image.

In addition, the coordinate synthesis module 24 synthesizes GPS coordinates on a video image or a drawn image, and ordinarily coordinates coordinates based on a reference point indicated in a video image or a picture image, and displays coordinate data on the image.

In this case, the reference point may be displayed in a process of creating a video image or a drawn image, and the display method may include a natural display method through shooting or an artificial display method through drawing.

The image drawing module 25 generates a drawing image as a background of the digital map by performing a drawing operation on the basis of the image image. It is also possible to use a drawing machine for direct drawing in writing. However, In general, an application in a manner of writing to a computer may be applied.

Here, the application-based image drawing module based on a video image is a publicly known technique widely used in the field of digital map production, and therefore, the description thereof will be omitted here.

In addition, the information link module 27 links various pieces of information recorded in the GIS system to corresponding points in the illustrated image, so that linked related information can be output when the user clicks the corresponding point. The operator displays an object to be linked to specific information of the GIS system in the drawing image in the drawing image as the object image.

The completed numeric map is output through the input / output module 26.

The system according to the present invention having such a configuration has the following operating states.

4 to 6, the operator first places the reference point applying apparatus A at a specific place set as a reference point.

Then, the operator sets each electric component to the usable state via the input device i.

At this time, the operator inputs the absolute coordinates of the position where the reference point applying apparatus A is installed in the control unit 900 of the reference point applying apparatus A, and transmits the coordinate signal of the absolute coordinates inputted by the control unit 900 to the transmitter 700 To the outside.

The control unit 900 of the reference point applying apparatus A receives the illuminance signal from the illuminance sensor 800 and drives the lifting apparatus 600 to drive the transmitter 700 To move upward as shown in FIG.

Accordingly, the transmitter 700 can be placed at a relatively high position and exhibit a high transmission rate.

At this time, the solar cell 200 converts solar energy from the sun into electric energy and stores it.

When the drone 1000 enters the reference point application apparatus A for aerial photographing in the above state, the receiver 13 of the photographing apparatus 10 receives the coordinate signal from the reference point applying apparatus A do.

At this time, the controller 14 of the photographing apparatus 10 processes the coordinate signal received from the reference point applying apparatus A to confirm the position of the drones 1000 based on the reference point applying apparatus A, And the position of the drone 1000 itself determined by the GPS device 11 are compared with each other, and when the difference between the coordinate signals occurs above a predetermined reference value, the drone 1000 is moved in a direction in which no difference occurs. This is easy to adjust because you can get location information via GPS.

Here, since the aerial photographing using the drone 1000 is usually performed during the day, the reference point applying apparatus A need not be operated at night.

The control unit 900 of the reference point applying apparatus A receives the illuminance signal indicating that the surrounding environment is dark from the illuminance sensor 800 and drives the elevation apparatus 600 to transmit the illuminance signal to the transmitter 700).

Then, the control unit 900 of the reference point applying apparatus A drives the trolley driving apparatus M to rotate the trolley 120.

At the same time, the control unit 900 of the reference point applying apparatus A operates the cleaning liquid supply apparatus 300 and the air injection apparatus 400.

5, the cleaning liquid supply device 300 supplies the cleaning liquid to the spinneret 120, and the air injection device 400 ejects air toward the spinneret 120. As shown in FIG.

At this time, the solar panel 210 of the solar cell 200 rotates along the rotation axis 120, dust is removed by the air injected from the air injection device 400, The surface is cleaned by the cleaning liquid.

Thereafter, when the rotator 120 continuously rotates, the solar panel 210 is brought into contact with the foreign material removing member 500 as shown in FIG. 6, and the residual dust and foreign matter remaining after being removed by the air injecting apparatus 400 The foreign matter mixture liquid which has been mixed with the washing liquid is wiped by the foreign material removing member 500 and the foreign matter mixture liquid freely falls between the base 110 and the clearance of the rotating body 120 and is accommodated in the foreign matter receiving mechanism 130.

In addition, some mixed liquids that flow into the rotary tub 120 when the rotary tub 120 rotates freely fall before being contacted with the foreign material removing member 500 and are accommodated in the foreign material receiving mechanism 130.

The control unit 900 of the reference point applying apparatus A may include the rotary driving device M, the cleaning liquid supply device 300, the air injection device 400 To stop the driving of the reference point applying apparatus A so that the reference point applying apparatus A is in the initial state as shown in Fig.

The control unit 900 of the reference point applying apparatus A drives the elevating apparatus 600 and the transmitter 700 to transmit the coordinate signals of the reference point applying apparatus A in the morning.

As such, the drone 1000 is easy to maneuver, and since the cost is low even though it is frequently floated, its utilization is very high and since the image image can be obtained at the accurate photographing position, the digital map is actively responded to the change of the land feature. It has the advantage of being able to update.

As shown in FIG. 7, the drone 1000 includes a disk-shaped drone body 1220 for hobbling for a long period of time for a minimum of 4 hours. An engine chamber 1230 is provided on the lower surface of the drone body 1220 And the above-described camera 12 is mounted at the center of the bottom of the engine chamber 1230.

A landing gear 1240 is installed on the bottom of the engine chamber 1230 to protect the drones 1220 when the drones 1000 are flying or landing. However, the description of the drones, drones, drone rotor motors and the like is omitted since they are general matters.

The landing gear 1240 is configured such that one end of the endrot leg 1244 is inserted into the cylindrical outer sheath 1242 so as to have a buffering function and can reciprocate only within a certain distance, It is preferable to minimize the shock when the drones 1000 are landed by allowing the buffer spring 1246 to intervene in a space so as to be elastically buffered when the load is applied.

In the present invention, a micro gas turbine generator 1240 is installed in the engine chamber 1230 in order to increase the flight time of the drone 1000.

The micro gas turbine generator 1240 may be a product manufactured and sold by IHI (Japan) as shown in FIG. 8. The micro gas turbine generator 1240 uses palm-sized LPG as fuel Is a turbine generator that has a complete oil-free structure and has a power generation capacity of 400,000 revolutions per minute and a maximum of 400 watts due to the use of a foil bearing.

Particularly, since a lot of heat is generated when the micro gas turbine generator 1240 is driven, a cooling fan 1242 is provided on the inner ceiling of the engine chamber 1230 for cooling the engine, and a cooling fan 1242 is provided around the engine chamber 1230 It is preferable that a plurality of ventilation holes 1232 are formed in a perforated manner.

A cylindrical battery mounting groove 1250 is formed in the center of the upper surface of the drone body 1220. Buoyancy chambers 1260 are formed on both sides of the battery mounting groove 1250 in a sealed state, Is filled. Of course, the air can escape and be perforated so that it can flow in.

The controller 14 described above is installed on one side of the buoyancy chamber 1260.

A battery 1270 is installed in the battery installation groove 1250 and the battery 1270 is connected to the miniaturized gas turbine generator 1240 to store electricity.

At this time, it is more preferable that the heat insulating pad 1272 is interposed between the battery installation groove 1250 and the battery 1270. The heat insulating pad 1272 prevents the battery 1270 from being deteriorated by interrupting the heat generated in the micro gas turbine generator 1240.

In order to increase the heat shielding effect, the heat-insulating pad 1272 is formed by mixing 5% by weight of glass fiber, 3% by weight of hydroxypropyl methylcellulose, 2% by weight of monoglyceride, 2.5% by weight of phenyltrimethoxysilane, 4% by weight Insuladd powder, 4% by weight DOTP (Dioctyl terephthalate) and the remaining PVC.

At this time, the glass fiber is added for dimensional stabilization and increase in tensile strength, and the hydroxypropyl methylcellulose is added to enhance the elastic deformation and oyster of the functional filler, and the monoglyceride promotes emulsification The phenyltrimethoxysilane is added as a kind of silane coupling agent to provide hydrophilicity as well as moisture resistance as well as water repellency, and the insulin powder is added to the aluminum A microscopic hollow sphere powder with a size of 30 ~ 100 microns mainly composed of silicate is added to form a ceramic coating of a closed air layer to exhibit excellent heat radiation and heat resistance. The DOTP is an environmentally friendly PVC plasticizer PVC is added to plasticize to increase moldability .

The upper surface of the drum body 1220 including the battery installation groove 1250 is sealed by the drones 280.

In this way, the drones 1000 continuously generate electricity by the miniaturized gas turbine generator 1240, which is an engine, and accumulate electricity in the battery 1270, so that the drones 1000 can obtain sufficient electricity to fly for a long time do.

5% by weight of 1-chloro-2,3-epoxypropane, 5% by weight of methyltrimethoxysilane, 10% by weight of polyvinyl alcohol, and 10% by weight of silicone It is preferred that the composition is formed of a composition comprising 10% by weight of resin, 2.5% by weight of triethanolamine, 1.5% by weight of petroleum, and the rest of the polycarbonate resin.

Here, 1-chloro-2,3-epoxypropane is added as a chlorine-based material having a high reactivity for stabilizing the reaction of the composition, and methyltrimethoxysilane is improved in durability by strengthening the bonding force between emulsified materials by hydrophobicity .

In addition, polyvinyl alcohol is added to enhance the acid resistance and chemical resistance, so as to increase the bonding force between components. The silicone resin is a polymer mainly composed of silicon and oxygen bonds, and enhances the bonding force to strengthen the binding force between the constituents. And triethanolamine is a weakly alkaline buffer added to control acidity. Petrolatum is an ointment-like material composed mainly of amorphous solid hydrocarbons and is waterproof and added to enhance the formation, and polycarbonate The resin is a base resin.

In addition, a dustproof material (SOC) is installed at the lower end of the micro gas turbine generator 1240.

The SOC is used to minimize impact noise generated when the micro gas turbine generator 1240 collides with the bottom surface of the engine chamber 1230. As shown in FIG. 9, the micro gas turbine generator 1240 has a bottom surface And the convex portions of the lower plate spring PSP2 fixed to the bottom surface 1234 of the engine chamber 1230 are disposed opposite to each other with a coil spring at the apex of the convex portion. And the shock absorbing noise can be completely damped by taking a double buffer structure by buffering by a leaf spring and buffering by a coil spring.

By constructing the drones 1000 as described above, it is possible to photograph a photographing area smoothly while hovering for a long time to acquire a video image.

10 and 11, a plurality of DBs and modules constituting the digital map management server 20 are mounted on a housing 2000. The housing 2000 has a server rack structure, Lt; / RTI >

In addition, on the front surface of the housing 2000, a housing door 2100 is formed to be openable and closable. In order to prevent heat generated during operation of the DB and the modules from being deteriorated, A pair of first and second coolers 2200 and 2300 are installed.

At this time, the first and second coolers 2200 and 2300 are blowing boxes with a blowing fan incorporated therein, and the outside air is forcedly introduced to indirectly circulate the inside air.

The upper filter 2500 is fixed on the inner surface of the exhaust port 2400, that is, on the inner side of the enclosure 2000. The upper filter 2500 is fixed to the inner surface of the exhaust port 2400,

In addition, a discharge guide 2600, which is inclined toward the discharge port 2400 and guides the wind blown from the first and second coolers 2200 and 2300 to the discharge port 2400, is fixed.

In this case, the end of the discharge guide 2600, that is, the end toward the ceiling surface of the housing 2000 should be spaced apart from the ceiling surface of the housing 2000.

This is to generate a suction pressure on the inner ceiling side of the enclosure 2000 when the wind blown by the air is blown out through the exhaust port 2400 by the wind pressure, so that the air in the enclosure 2000 can be sucked up, Cooling becomes possible.

A lower filter 2700 having fine air holes is provided on the lower side of both sides of the housing 2000 so that the outside air can be introduced in a filtered state.

At this time, the first and second coolers 2200 and 2300 are periodically operated for a predetermined period of time. Of course, it is also possible to provide a temperature sensor inside to control operation when the temperature exceeds a predetermined temperature range.

In addition, an exhaust control plate 2800 is provided on the outer side of the exhaust port 2400, that is, on both outer sides of the enclosure 2000.

The exhaust control plate 2800 serves to perform a kind of damper function. Normally, the exhaust port 2400 is hermetically closed from the outside, and when the first and second coolers 2200 and 2300 are operated and a strong wind pressure is applied, The exhaust port 2400 is opened while being pushed up by wind pressure, and is elastically returned when the wind pressure is released to seal the exhaust port 2400.

One end of the exhaust control plate 2800 is integrally fixed to the outer circumferential surface of the bushing 2820 and a rotation shaft 2840 is inserted into the bushing 2820. The rotation shaft 2840 is connected to the exhaust control plate 2800, And is rotatably fixed on a fixed block 2860 fixed to both outer surfaces.

A torsion spring 2880 is inserted into the rotary shaft 2840 so that one end is fixed to the exhaust throttle plate 2800 and the other end is fixed to the outer surface of the housing 2000 to always close the exhaust throttle plate 2800 in the closing direction Elasticity action.

In addition, a stretchable member 2900 is fixed to the inner surface of the exhaust throttle plate 2800, that is, the surface facing the exhaust port 2400, in order to improve the sealing force of the exhaust port 2400.

With this configuration, the inside of the housing 2000 can be indirectly cooled, and deterioration of the module and the DB can be prevented.

100; Foundation base 200; Solar cell
300; A cleaning liquid supply device 400; Air injection device
500; A foreign matter removing member 600; Lifting device
700; Transmitter 800; Illuminance sensor
900; The control unit

Claims (1)

A GPS device 11, a camera 12 for photographing a feature, a receiver 13 for receiving a coordinate signal from the transmitter 700, a GPS device 11, a camera 12, and a receiver 13, A photographing apparatus 10 including a controller 14 installed in the drones 1000;
A video image DB 21 for storing video images collected by the photographing apparatus 10, a picture image DB 22 for storing a picture picture based on the picture image, An image editing module 23, a coordinate synthesizing module 24 for synthesizing GPS coordinates in a video image or a picture image, and a digital map management server 20 including an image drawing module 25 for creating a drawing image based on the image image )Wow;
(A) having a transmitter (700) for transmitting a coordinate signal of an installed position to the receiver (13), the system comprising:
The image image DB 21, the illustrated image DB 22, the image editing module 23, the coordinate synthesizing module 24, and the image drawing module 25, which constitute the numerical map management server 20, Mounted inside; On the front surface of the housing 2000, a housing door 2100 is openable and closable; A pair of first and second coolers 2200 and 2300 are installed on both sides of the upper surface of the housing 2000; On the upper sides of both sides of the housing 2000, a rectangular exhaust port 2400 is formed. An upper filter 2500 is fixed to the inside of the housing 2000 of the exhaust port 2400; A discharge guide 2600, which is inclined toward the discharge port 2400 and guides the forced air blown from the first and second coolers 2200 and 2300 to the discharge port 2400, (2000); An exhaust control plate 2800 is installed on both outer surfaces of the housing 2000, which is the outside of the exhaust port 2400, One end of the exhaust throttle plate 2800 is integrally fixed to the outer peripheral surface of the bushing 2820; The bushing 2820 is fitted with a rotary shaft 2840; The rotation shaft 2840 is rotatably fixed on a fixed block 2860 fixed to both outer surfaces of the housing 2000; One end of the torsion spring 2880 is fixed to the exhaust throttle plate 2800 and the other end of the torsion spring 2880 is fixed to the outer surface of the housing 2000 so that the exhaust throttle plate 2800 is always elastically biased ; Wherein the elastic member (2900) is fixed to an inner surface of the exhaust throttle plate (2800), and the positional change of the feature is monitored and applied to a digital map.

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