KR102066432B1 - Photoflight system - Google Patents

Abstract

The present invention relates to an aerial photographing system. More specifically, the aerial photographing system comprises: a camera unit installed on the bottom of an aircraft and having a ground camera built to photograph a geographic feature; and a control unit built in the aircraft and controlling an operation of the ground camera. Regardless of a state of the air, the ground camera can independently photograph the geographic feature in a vertical direction, thereby minimizing a photographing error rate for a hidden geographic feature which can accurately photograph a planned point.

Description

Aerial Photography System {PHOTOFLIGHT SYSTEM} to minimize the error rate of shooting on concealed features

The present invention relates to an aerial shooting system, and more particularly, a ground camera can independently shoot in a vertical direction regardless of a change in attitude of an aircraft, and a ground camera photographs a hidden feature that accurately photographs a planned point. The present invention relates to an aerial photography system capable of minimizing an error rate.

Aerial photographing technology is largely manned shooting where pilots and photographers are seated next to the plane cockpit and cameras, and unmanned aerial vehicles are equipped with radio transmitter and receiver controls on aircraft that can not carry people such as model helicopters or airships. It is divided into photography technology.

The photographed aerial photographs are applied by numerically applying the GPS coordinate information of the feature, and inputting various additional information based on the obtained numerical information. In particular, recent advances in computers and software, the development of photographic and aviation technologies, and the development of precision optics and measuring instruments have had a significant impact on photorealistic mapping.

1 is a view schematically showing a conventional general aerial photography.

As shown in the drawing, general aerial photography is performed by a high-performance, high-resolution camera C having a high magnification and high resolution installed on an aircraft P, photographing the ground several times per second at a predetermined altitude. The best aerial photographing images are selected and used as the target of drawing images.

However, since the aircraft P is a device that operates the expanse at a constant speed, the attitude of the aircraft P may change according to the altitude adjustment, the steering adjustment, etc. of the aircraft P, and the attitude change of the aircraft is the camera C. There was a problem that the camera (C) can not shoot the intended target because it can cause a change in the shooting angle of.

As a result, the angle change applied to the camera 130 according to the flight behavior of the aircraft P causes the camera 310 to photograph an unintended object or causes an optical error, thereby making it difficult to collect accurate aerial photographing images. There is a problem.

The matters described as the background art are only for the purpose of improving the understanding of the background of the present invention, and should not be taken as acknowledging that they correspond to the related art already known to those skilled in the art.

The present invention is to solve the above-mentioned problems of the prior art, the shooting error rate for the concealed feature that can accurately shoot the planned point because the ground camera can shoot the feature independently in the vertical direction irrespective of the state of the aircraft The purpose is to provide an aerial photography system that can minimize the number of points.

In addition, the present invention can attenuate the vibration or shock transmitted from the gas by combining the buffer portion on the upper part of the ground camera, so that the aerial error can minimize the shooting error rate for the concealed feature that the ground camera can shoot the ground stably. Another purpose is to provide a photographing system.

Technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description of the present invention. .

The configuration of the present invention for achieving the above object, the camera unit is installed on the bottom of the aircraft and the ground camera is built to shoot the feature; And a controller embedded in the aircraft and controlling the operation of the ground camera. Characterized in that it comprises a.

The camera unit in the aerial shooting system that can minimize the shooting error rate for the concealed feature according to an embodiment of the present invention, the camera base is coupled to the lower portion of the aircraft is formed hemispherical pivot hole; A spherical binding member accommodated in the pivot hole so as to be rotatable forward, backward, left and right; An extension part extending below the binding body; A camera case coupled to the lower portion of the extension and having an empty interior; A buffer unit mounted on one side of the inner upper surface of the camera case; A ground camera coupled to the lower portion of the buffer part and photographing the ground; A cylinder coupled to the other side of the inner upper surface of the camera case and movable up and down; And a camera opening / closing unit coupled to the inside of the camera case via a camera spring and movable left and right; It is preferable to include.

In the aerial photographing system capable of minimizing a photographing error rate for a concealed feature according to an embodiment of the present invention, the camera base is selectively inserted into a plurality of stop grooves formed on an upper part of the binding member to temporarily bind the binding member. A stop unit for stopping is coupled, and a laser machine for irradiating a laser in an extension direction is installed at a lower part of the aircraft adjacent to the camera base, and a plurality of receiving sensors are mounted at the side of the extension unit to receive and detect the laser beam emitted from the laser machine. The lower part of the camera case is formed with an opening for exposing the ground camera to the outside, the camera opening and closing portion is spaced apart from the opening and the opening and closing hole is selectively formed in accordance with the movement of the camera opening and closing is formed, the cylinder Inverted triangle is formed on the side of the end of the camera opening and closing portion The moving part has a triangular shape corresponding to the pressing part, and an ultrasonic launcher is coupled to the lower end of the cylinder, and as the cylinder moves downward, the pressing part presses the moving part to move to the left side, and the camera opening / closing part of the camera spring Overcome the elastic force and move to the left side so that the opening and closing hole is overlapped with the opening hole.When the cylinder is moved upward, the pressing part no longer presses the moving part. It is preferable to be spaced apart to the right from the hole.

In the aerial photographing system capable of minimizing a photographing error rate for a concealed feature according to an embodiment of the present invention, the controller comprises: a GPS module for measuring and calculating a current GPS position coordinate while communicating with an satellite; A position recognition module that checks the altitude of the aircraft and the level of the aircraft while interworking with the altitude meter and the horizontal sensor of the aircraft, and controls the operation of the ground camera according to the identified altitude and level; An editing module for connecting the aerial photographing images captured by the terrestrial cameras to images corresponding to neighboring regions, editing the composite aerial photographing images, and linking the position coordinates checked by the GPS module to the synthesized aerial photographing images; A memory for storing the captured aerial photograph image and the synthesized aerial photograph image; A stop module for interlocking with the GPS module and checking whether the aircraft is adjacent to the corresponding location of the registered location information, and temporarily stopping the ground camera when the aircraft is adjacent to the corresponding location; And a camera driving module configured to determine whether to drive the ground camera by comparing the inflection angle of the extension calculated by the light receiving position of the reception sensor with the measured tilt value of the aircraft. It is preferable to include.

In the aerial shooting system that can minimize the shooting error rate for the concealed feature according to an embodiment of the present invention, the buffer unit is coupled to the inner upper surface of the camera case, the buffer support portion is formed with a threaded buffer coupling hole; A cushioning body portion coupled to a lower portion of the buffer support portion and having a rectangular parallelepiped shape in which a buffer through hole is formed; A buffer cover portion coupled to cover the lower surface of the buffer body portion and having a buffer head hole formed therein; And a buffer bolt that is fastened to the buffer coupling hole through the buffer head hole and the buffer through hole, and connects the buffer cover part, the buffer body part, and the buffer support part into one. It is preferable to include.

In the aerial photographing system capable of minimizing a photographing error rate for a concealed feature according to an embodiment of the present invention, the buffer bolt, the bolt screw portion having the same diameter as the buffer coupling hole and the thread is formed on the outer peripheral surface; A bolt through portion having the same diameter as the buffer through hole and having no thread formed on its outer circumferential surface; And a bolt head portion having the same diameter as that of the buffer head hole and in which no thread is formed on the outer circumferential surface thereof. It is preferable to include.

The present invention having the configuration as described above, because the ground camera is configured to shoot the ground in the vertical direction has the advantage that it can perform a stable shooting operation by obtaining a uniform aerial image photographed at a uniform angle.

In addition, the present invention can detect the degree of inclination of the aircraft by detecting the laser beam irradiated from the laser device, and by using this information can detect the abnormal position signal of the ground camera to remove the abnormal shooting image and accurate The advantage is that only photographed images can be acquired.

Furthermore, the present invention can be prevented from being contaminated from external foreign matters because the ground camera is exposed only at a desired time point, and by using a buffer to mitigate vibration or shock transmitted to the ground camera to perform a stable aerial shooting operation It works.

1 is a view schematically showing a conventional general aerial view.
Figure 2 is a partial cross-sectional view showing the overall appearance of the aerial shooting system that can minimize the shooting error rate for the concealed feature according to an embodiment of the present invention.
3 is a diagram showing each configuration of a control unit according to an embodiment of the present invention.
Figure 4 is an exemplary view showing the synthesis of the aerial photographing image of the section by re-photographing a portion of the synthesized aerial photographing image according to an embodiment of the present invention.
5 is a view showing an exploded state of each component of the buffer unit according to an embodiment of the present invention.
Figure 6 is a view showing the inside of the buffer body according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and like reference numerals designate like elements throughout the specification.

In addition, the terms or words used in the specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to explain their invention in the best way. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

2 is a partial cross-sectional view showing the overall appearance of the aerial shooting system that can minimize the shooting error rate for the concealed feature according to an embodiment of the present invention.

As shown, the aerial shooting system according to the present invention, is installed on the bottom of the aircraft (P), the ground camera 120 is embedded in the camera unit 100 and the aircraft (P) to shoot the feature is built on the ground It includes a control unit 300 for controlling the operation of the camera 120.

As shown in the drawing, the camera unit 100 includes a camera case 110, a ground camera 120, a cylinder 130, a camera opening and closing unit 140, and a camera base 150.

The camera base 150 is coupled to the lower portion of the aircraft (P), the hemispherical pivot hole 151 is formed at the lower end of the camera base 150 so that the spherical binding body 114 accommodated therein may rotate back and forth, left and right. Make sure

An extension 112 is coupled to a lower portion of the spherical binding body 114 that is rotatable inside the hemispherical pivot hole 151, and a camera case 110 having an empty interior is coupled to the lower portion of the extension 112 so that it is always vertical. You can keep the direction.

In other words, as the aircraft P is tilted, the camera base 150 is inclined in the same posture, but the spherical binding body 114 is freely rotatable inside the pivot hole 151, so that the camera case 110 is the camera. Unlike the base 150, it can always be kept vertical due to its own weight.

The pivot hole 151 is formed in a hemispherical shape to accommodate the binding body 114, the diameter of the open lower end is formed to be relatively smaller than the maximum diameter of the binding body 114 to avoid the binding body 114 It is possible to rotate the binding body 114 while accommodating.

In addition, the stopper 116 is selectively inserted into the plurality of stop grooves 115 formed on the top of the binding body 114 to stop the binding body 114 in the camera base 150. The stop unit 116 may be electrically connected to the control unit 300 to be driven.

When the ground camera 120 arrives at the point to be photographed and is aligned in the vertical direction, the stop unit 116 may enter the stop groove 115 to temporarily fix the binding body 114. The camera 120 is stably photographed without shaking.

The camera case 110 is coupled to the lower portion of the camera base 150 via the extension 112 and the binding body 114, and is made of a cylindrical or square cylindrical shape of the hollow inside.

The buffer unit 200 is installed at one side of the inner upper surface of the camera case 110, and the ground camera 120 is coupled to the lower portion of the buffer unit 200. The ground camera 120 is disposed in the vertical direction to face the ground to shoot the ground feature.

The buffer unit 200 to mitigate the vibration or shock transmitted to the ground camera 120 from the aircraft (P) gas to prevent the ground camera 120 to shake during shooting, thereby enabling a stable aerial shooting operation. Description of the buffer unit 200 will be described in detail below.

The cylinder 130 is coupled to the other side of the inner upper surface of the camera case 110, it is movable up and down. An ultrasonic hole is formed in the lower portion of the camera case 110, and the ultrasonic launcher 132 is coupled to the lower end of the cylinder 130, so that the ultrasonic launcher 132 is the camera case 110 when the cylinder 130 is moved downward. It may be exposed to the outside of, and when the cylinder 130 is moved to the upper side, the ultrasonic launcher 132 may be stored inside the camera case 110.

The ultrasonic launcher 132 may generate a frequency that is relatively higher than an audible frequency of a person, thereby preventing the interference of the bird, such as a bird, from approaching the aircraft P, thereby allowing the feature to be accurately photographed.

The camera opening and closing unit 140 is coupled to the left and right to move through the camera spring 141 inside the camera case 110. The opening and closing hole 142 is drilled in the central portion of the camera opening and closing portion 140.

An opening hole 111 for exposing the ground camera 120 to the outside is formed at a lower portion of the camera case 110 to correspond to the position of the ground camera 120. According to the movement it may be spaced apart or overlapped from the opening (111).

That is, when the camera opening and closing portion 140 is moved to the right by the elastic force of the camera spring 141, the opening and closing hole 142 is spaced apart from the opening hole 111 to the right, whereby the camera opening and closing portion 140 Cover the opening hole 111 so that the ground camera 120 is not exposed to the outside.

When the camera opening / closing part 140 overcomes the elastic force of the camera spring 141 and moves to the left side, the opening / closing hole 142 is disposed to overlap with the opening hole 111, whereby the ground camera 120 opens / closes the hole 142. And it may be exposed to the outside through the opening hole 111.

In this case, an inverted triangular pressing part 131 is formed at the side of the cylinder 130, and a moving part 143 having a triangular shape is formed at the right end of the camera opening / closing part 140 in response to the pressing part 131. do.

As the cylinder 130 moves downward, the pressing part 131 presses the moving part 143 to move the moving part 143 to the left side, and the camera opening / closing part 140 overcomes the elastic force of the camera spring 141. You can move to the left.

When the cylinder 130 is moved upward, the pressing part 131 does not press the moving part 143 anymore, so that the camera opening and closing part 140 naturally moves to the right by the elastic force of the camera spring 141.

As such, the present invention can prevent the ground camera 120 from being contaminated by external foreign matters, so that the ground camera 120 can be exposed only when the user wants the ground camera 120 to be exposed, and further extends the life of the ground camera. You can increase it.

In addition, the present invention since the ground camera 120 may be exposed in conjunction with the exposure of the ultrasonic launcher 132 coupled to the end of the cylinder 130, primarily chasing the interference such as birds through the ultrasonic launcher 132 Secondly, the ground camera 120 may shoot a feature.

On the other hand, the laser machine 160 is mounted on the bottom of the aircraft P. The laser device 160 is spaced apart from the camera base 150 in the front-rear direction and irradiates the laser toward the extension part 112.

A plurality of receiving sensors 113 are mounted on the side of the extension 112 to receive and detect the laser beam emitted from the laser machine 160. The laser irradiated from the laser device 160 is detected by the plurality of receiving sensors 113, and the inclination degree and the direction of the aircraft P may be estimated according to the detection position of the laser.

That is, the laser irradiated from the laser unit 160 may obtain the position information from the receiving sensor 113 to check the angle of refraction between the camera base 150 and the extension part 112, and this angle of refraction is the aircraft P ) Is compared with the degree of tilt of itself.

As is well known, aircraft P is tilted in the course of turning or adjusting altitude. Of course, when the aircraft of the aircraft P is tilted, the installed mechanisms are tilted as well, and the camera unit 100 fixed to the aircraft P is not an exception.

However, precise mapping is impossible unless the accuracy of the photographed image, which is essential for precise mapping, is guaranteed by the tilting of the camera.

Therefore, the camera unit 100 always faces in the vertical direction according to the relative rotation of the pivot hole 151 and the binding body 114 so as to maintain the vertical direction toward the ground regardless of the gas state of the aircraft P.

As a result, even when the gas is inclined, the extension 112 faces the vertical direction of the earth in the gravity direction by the load of the camera case 110, while the camera base 150 moves along the tilt of the gas while the camera base 150 moves. ) And the extension 112 are refracted at a predetermined angle.

On the other hand, due to various reasons such as friction or engagement of the binding body 114 may cause a problem that the photographing position of the camera unit 100 does not face the vertical. In order to solve this problem, the angle of refraction is calculated through the light receiving position of the receiving sensor 113 and compared with the measured tilt value of the aircraft P.

When the angle of refraction of the camera unit 100 and the measured inclination value of the aircraft P are similar to each other, the ground angle of the camera 120 is assumed to be perpendicular and the ground camera 120 is driven to operate the camera unit 100. If the difference between the angle of refraction and the actual inclination value of the aircraft (P) exceeds the standard, guide the operator to limit the shooting of the ground camera 120 and to take follow-up measures.

3 is a view showing each configuration of the control unit according to an embodiment of the present invention, Figure 4 is re-photographing a portion of the synthesized aerial photographing image according to an embodiment of the present invention aerial photographing image of the corresponding section Figure is an example showing the synthesis.

As shown, the control unit 300 includes a GPS module 310, a position recognition module 320, an editing module 330, a memory 340, a stop module 350 and a camera driving module 360, , The ground camera 120 is electrically connected.

The GPS module 310 may communicate with a GPS-only satellite to calculate the current position coordinates and then output the coordinates. The calculated position coordinates are linked with the aerial image captured by the ground camera 120.

The position recognition module 320 may check the current altitude and the horizontal state of the aircraft P by communicating with an altitude measuring instrument, an orientation measuring instrument, and an inclination sensor of the aircraft P. In addition, the position recognition module 320 may check the optimum shooting time of the ground camera 120 according to the flight state of the aircraft (P).

When the user (worker) sets the optimum shooting altitude to the position recognition module 320, the position recognition module 320 checks the altitude of the aircraft P in real time, when the ground camera 120 reaches the desired altitude when the ground camera 120 reaches the desired altitude. Control to shoot continuously.

In addition, the position recognition module 320 communicates with the inclination sensor of the aircraft (P) in real time to check whether the aircraft is horizontal, and when the aircraft reaches the horizontal stability range, the ground camera 120 controls to continuously shoot the ground. .

Therefore, the operator may not accidentally miss shooting because the position recognition module 320 captures a feature by grasping the optimum shooting time without manipulating the ground camera 120.

The editing module 330 adjusts the aerial photographing image captured by the ground camera 120 at the same magnification, and edits the aerial photographing image synthesized by connecting or combining neighboring aerial photographing images.

As shown in FIG. 4, the editing module 330 outputs the captured aerial photographing image in real time and presents it to the photographer. The photographer operates the editing module 330 to select an optimized aerial photographing image and connects them to each other. Final edit to one aerial image.

The memory 340 stores the aerial photographed image captured by the ground camera 120 and the synthesized aerial photographed image edited by the editing module 330. The memory 340 may be in the form of a removable USB memory, or may be in the form of a conventional external hard drive.

The stop module 350 is temporarily fixed so that the ground camera 120 is not shaken by an external force when the location information about the area to be photographed is registered by the photographer and the aircraft P passes through the area. Effectively photograph the ground in the current stable state. To this end, the stop module 350 interlocks with the GPS module 310 and controls the stop unit 116 to be inserted into the stop groove 115.

The camera driving module 360 determines whether to drive the ground camera 120 by comparing the inclination angle of the extension 112 calculated by the light receiving position of the reception sensor 113 with the measured tilt value of the aircraft P. FIG. .

When the camera driving module 360 compares the refraction angle of the camera unit 100 with the actual tilt value of the aircraft P and is similar to each other, the camera driving module 360 considers that the photographing angle of the ground camera 120 is in the vertical direction, and the ground camera ( 120, and if the difference between the angle of refraction of the camera unit 100 and the measured inclination value of the aircraft P exceeds the standard, to guide the operator to limit the shooting of the ground camera 120 and to take follow-up measures .

5 is an exploded view of each component of the shock absorbing unit according to the exemplary embodiment of the present invention.

As shown, the buffer 200 is coupled to the inner upper surface of the camera case 110, the buffer support 210, the buffer body 220, the buffer cover 230 and the buffer bolt 240 It includes.

The buffer support part 210 is coupled to the upper surface of the camera case 110 in a vertical direction, and a buffer coupling hole 211 is formed at the center thereof. The inner diameter of the buffer coupling hole 211 is formed with a plurality of threads along the longitudinal direction. In the illustrated embodiment, the buffer support 210 is formed in a cylindrical shape, but is not limited thereto, and may be formed in various shapes such as a rectangular parallelepiped.

The buffer body 220 is coupled to the lower portion of the buffer support 210, a buffer through-hole 221 is formed in the center. The inner diameter of the buffer through hole 221 is different from the buffer coupling hole 211 in that no thread is formed.

The buffer body 220 is formed in a rectangular parallelepiped shape, and made of a material having elasticity to prevent shock or vibration from being transmitted from the aircraft P to the ground camera 120.

The buffer cover 230 is coupled to cover the lower surface of the buffer body 220, the buffer head hole 231 is formed in the center. Like the buffer through-hole 221, the thread is not formed in the inner diameter of the buffer head hole 231.

The buffer cover 230 is formed to have a cross-section of the 'c' shape corresponding to the shape of the lower surface of the buffer body 220. The shock absorbing cover 230 prevents the shock absorbing body 220 from being easily contacted with the outside.

In other words, the buffer cover 230 is made of a material having a relatively high hardness than the buffer body 220. The buffer cover 230 may be made of various materials such as plastic or metal of high hardness.

As described above, the buffer body 220 performs a function of buffering external vibrations or shocks. When the buffer body 220 has a too high hardness, the shock absorbing body unit 220 hardly performs a shock absorbing function. Can be. That is, it is very difficult to satisfy both performances at once.

In the present invention, by improving the problem, the buffer body portion 220 is made of a material that is as smooth and elastic as possible to maximize the cushioning function, the buffer cover portion 230 is made of a material of high hardness to prevent wear, Both functions can be satisfied at the same time.

The buffer bolt 240 is fastened to the buffer coupling hole 211 through the buffer head hole 231 and the buffer through-hole 221, the buffer cover 230, the buffer body 220 and the buffer support 210 )) Into one.

Specifically, the buffer bolt 240 has the same diameter as the buffer coupling hole 211 and has the same diameter as the bolt screw portion 241, threaded through the outer peripheral surface, the buffer through-hole 221 and the thread is not formed on the outer peripheral surface It includes a bolt head portion 243 having the same diameter as the bolt through portion 242 and the buffer head hole 231, the thread is not formed on the outer peripheral surface.

The length of the bolt through portion 242 is formed to be the same as the height of the buffer through-hole 221, the buffer body 220 by the buffer bolt 240 can be maintained in hardness without being pressed. In addition, the length of the bolt head portion 243 is formed to be equal to the height of the buffer head hole 231 so that the bolt head portion 243 does not protrude out of the buffer head hole 231.

6 is a view showing the internal appearance of the buffer body according to an embodiment of the present invention.

As shown, the buffer body portion 220 is formed in a rectangular parallelepiped shape as a whole, and a pair of permanent magnet plates 222 are coupled to both sides. Preferably, the buffer cover portion 230 coupled to the lower portion of the buffer body portion 220 is made of magnetic material such as metal. The buffer cover 230 may be naturally seated on the lower surface of the buffer body 220 by the permanent magnet plate 222, and may have a fixed force to some extent.

Specifically, the buffer body 220 is an elastic portion 223 disposed to be orthogonal to the pair of permanent magnet plates 222, the first reinforcing portion 224, the first reinforcing portion disposed on the lower surface of the elastic portion parallel to the elastic portion A second reinforcing part 225 disposed on the lower surface of the reinforcing part to be parallel to the first reinforcing part may include a coating part 226 disposed on the lower surface of the second reinforcing part to be parallel to the second reinforcing part.

The elastic portion 223 is to give an elastic force to the buffer body portion 220 as a whole to enable a buffering action. The elastic part 223 is 10 to 15 parts by weight of thermoplastic polyether ester elastomer (TPEE), azodicarbonamide (100 parts by weight of a polymer formed by polymerizing 20 to 30 parts by weight of vinyl acetate monomer based on 100 parts by weight of ethylene) It is preferred to include 8 to 10 parts by weight of azodicarbonamide) and 4 to 5 parts by weight of glyoxal.

If the vinyl acetate monomer constituting the polymer is less than 20 parts by weight, the crystallinity is excessively high and the hardness of the elastic part is too high. If the vinyl acetate monomer is more than 30 parts by weight, the flexibility is too high, and the elastic part may not be in place and may be slid and folded. Can be.

The thermoplastic polyether ester elastomer (TPEE) adds hardness to the elastic part. If the thermoplastic polyether ester elastomer is less than 10 parts by weight, the effect of reinforcing the hardness is insignificant. If the thermoplastic polyether ester elastomer is more than 15 parts by weight, the melt There is a problem that the index is lowered and the workability is lowered.

Azodicarbonamide (azodicarbonamide) is to impart an additional elastic force to the elastic portion, and when the azodicarbonamide is less than 8 parts by weight, the effect of adding elastic force is insignificant; Is not enough to make price competitiveness worse.

Glyoxal is azodicarbonamide that traps gas generated above a certain temperature and imparts high temperature viscoelasticity to the elastic part. If glyoxal is less than 4 parts by weight, the mechanical properties of the elastic part may be insufficient. If it is more than the weight part, the foaming pressure may be excessively large, causing the elastic part to burst.

The first reinforcing part 224 is disposed on the lower surface of the elastic part 223 to prevent the elastic part from being torn and broken. The first reinforcing part 224 is made of a net shape so that the elastic part is not easily torn even when a force is applied to any part of the elastic part.

The second reinforcing portion 225 is disposed on the lower surface of the first reinforcing portion 224 to allow the elastic portion to move flexibly. The second reinforcing portion 225 is formed of a fabric containing glass fiber or carbon fiber.

The coating part 226 is disposed on a lower surface of the second reinforcing part 225 and includes a buffer body part 220 including an elastic part 223, a first reinforcing part 224, and a second reinforcing part 225. Function to protect

The coating part 226 preferably includes 25 to 40 parts by weight of styrene resin, 10 to 25 parts by weight of vinyl resin, and 20 to 30 parts by weight of paraffin based on 100 parts by weight of polyurethane, and prevents the elastic part from getting wet with water. In addition to the waterproof function may be provided with a wear-resistant function to prevent the elastic portion is worn.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those who have the knowledge of.

100: camera unit 110: camera case 111: opening hole
112: extension 113: receiving sensor 114: binding body
115: stop groove 116: stop 120: ground camera
130: cylinder 131: pressing portion 132: ultrasonic launcher
140: camera opening and closing part 141: camera spring 142: opening and closing hole
143: moving unit 150: camera base 151: pivot hole
160 laser device 200 buffer unit 210 buffer support unit
211: buffer coupling hole 220: buffer body portion 221: buffer through hole
222: permanent magnet plate 223: elastic portion 224: first reinforcing portion
225: second reinforcing portion 226: coating portion 230: buffer cover
231: buffer head hole 240: buffer bolt 241: bolt screw portion
242: bolt through portion 243: bolt head portion 300: control unit
310: GPS module 320: Position recognition module 330: Edit module
340: memory 350: stop module 360: camera drive module

Claims (1)

A camera unit installed on the bottom of the aircraft and having a built-in ground camera to shoot a feature; And a controller embedded in the aircraft and controlling the operation of the ground camera. Including,
The camera unit,
A camera base coupled to the lower part of the aircraft and having a hemispherical pivot hole formed therein; A spherical binding member accommodated in the pivot hole so as to be rotatable forward, backward, left and right; An extension part extending below the binding body; A camera case coupled to the lower portion of the extension and having an empty interior; A buffer unit mounted on one side of the inner upper surface of the camera case; A ground camera coupled to the lower portion of the buffer part and photographing the ground; A cylinder coupled to the other side of the inner upper surface of the camera case and movable up and down; And a camera opening / closing unit coupled to the inside of the camera case via a camera spring and movable left and right; Including,
The camera base is coupled to a stop portion which is selectively inserted into a plurality of stop grooves formed on an upper portion of the binding body to temporarily stop the binding body. The machine is installed, and a plurality of receiving sensors are mounted on the side of the extension unit to receive and detect the laser irradiated from the laser machine,
An opening is formed in the lower part of the camera case to expose the ground camera to the outside, the camera opening and closing portion is formed in the opening and closing hole which is spaced apart from the opening and selectively opening and overlapping with the movement of the camera opening and closing portion of the cylinder The inverted triangle is formed in the side portion, the end of the camera opening and closing portion is formed in the triangle-shaped moving portion corresponding to the pressing portion, the lower end of the cylinder is coupled to the ultrasonic launcher,
As the cylinder is moved downward, the pressing part is moved to the left side by pressing the moving part, and the camera opening and closing part overcomes the elastic force of the camera spring and is moved to the left side so that the opening and closing hole is overlapped with the opening hole. The pressing part no longer presses the moving part, and the camera opening and closing part moves to the right side by the elastic force of the camera spring, and the opening / closing hole is spaced apart to the right from the opening hole.
The control unit,
GPS module for measuring and calculating the current GPS position coordinates while communicating with the satellite; A position recognition module that checks the altitude and the horizontal state of the aircraft while the altitude meter and the horizontal sensor are interlocked with the aircraft, and controls the operation of the ground camera according to the identified altitude and the horizontal state; An editing module which connects the aerial photographing images captured by the ground cameras to images corresponding to neighboring regions, edits the aerial photographing images, and links the position coordinates checked by the GPS module to the synthesized aerial photographing images; A memory for storing the captured aerial photograph image and the synthesized aerial photograph image; A stop module for interlocking with the GPS module and checking whether the aircraft is adjacent to the corresponding location of the registered location information, and temporarily stopping the ground camera when the aircraft is adjacent to the corresponding location; And a camera driving module configured to determine whether to drive the ground camera by comparing the inflection angle of the extension calculated by the light receiving position of the reception sensor with the measured tilt value of the aircraft. Including,
The buffer part,
A buffer support part coupled to an inner upper surface of the camera case and having a buffer coupling hole formed with a thread; A cushioning body portion coupled to a lower portion of the buffer support portion and having a rectangular parallelepiped shape in which a buffer through hole is formed; A buffer cover portion coupled to cover the lower surface of the buffer body portion and having a buffer head hole formed therein; And a buffer bolt that is fastened to the buffer coupling hole through the buffer head hole and the buffer through hole and connects the buffer cover portion, the buffer body portion, and the buffer support portion into one. Including;
The buffer bolt,
A bolt screw part having the same diameter as the buffer coupling hole and having a thread formed on an outer circumferential surface thereof; A bolt through portion having the same diameter as the buffer through hole and having no thread formed on its outer circumferential surface; And a bolt head portion having the same diameter as that of the buffer head hole and in which no thread is formed on the outer circumferential surface thereof. Aerial shooting system that can minimize the shooting error rate for the concealed feature, characterized in that it comprises a.

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