KR102404602B1 - All-round camera and aerial weather observation system including the same - Google Patents

Abstract

The present invention relates to an all-sky camera and an aerial weather observation system including the same. In order to solve the above problems, an aerial weather observation system according to the present invention includes a plurality of all-sky cameras and an observation server, wherein the plurality of all-sky cameras set a time based on a GPS signal, and perform aerial weather observation In order to perform the steps of photographing an all-season image of the sky, and matching the photographing date and time information at which the all-season image and the all-season image were taken, and transmitting it to the observation server, the observation server collects from each of the plurality of all-sky cameras A step of analyzing the aerial weather may be performed using the all-sky image and the photographing date and time information.

Description

ALL-ROUND CAMERA AND AERIAL WEATHER OBSERVATION SYSTEM INCLUDING THE SAME

The present invention relates to an all-sky camera used for weather observation, and an aerial weather observation system using the same.

For the safety and economical operation of aircraft, technology to collect and provide weather information is very important. In particular, in the take-off and landing phase of an aircraft, visibility, cloud height, wind direction, wind speed, precipitation, temperature, etc. are important meteorological factors in terms of the effect on aviation.

These meteorological elements can be obtained by analyzing the sky image taken. All-sky images are generally taken through an All-Sky Camera equipped with a fish-eye lens. The fisheye lens is an ultra-wide-angle lens with a dead angle of more than 180°. It has a viewing angle that can capture all directions of the hemisphere, so it can take a wide range of rapidly changing sky and clouds.

On the other hand, Republic of Korea Patent No. 10-0893556 (aerial photography device) uses a photographing device equipped with various sensors (wind speed sensor, precipitation sensor, temperature and humidity sensor, and fog sensor) to take an all-sky image, A method of analyzing and providing weather information is proposed.

However, although this method is effective for shooting all-sky images even in the case of poor visibility such as fog, it captures the entire sky over the airport, and provides essential information in the take-off and landing phase of an aircraft, such as cloud height and cloud volume. There are limitations in the accurate measurement of

Furthermore, when shooting the sky using an all-sky camera or aerial photography device under direct sunlight, the CCD (Charge Coupled Device) device may be exposed to direct sunlight for a long time, resulting in shortened lifespan and damage, and the captured image is It may not be usable due to saturation by light. In addition, there is a problem in that almost no image is captured when the illuminance of the sky is too low when observing at night.

Accordingly, for the safe take-off and landing of aircraft, there is still a need for an all-sky camera and an aerial observation server capable of capturing an all-sky image without time constraint and providing accurate cloud height and cloud volume.

An object of the present invention is to provide an aviation weather observation system that performs aerial weather observation for safe and economical airplane operation.

In particular, it is an object of the present invention to provide an aerial weather observation system capable of accurately calculating cloud height and cloud volume, which are essential elements for smooth airplane operation.

Furthermore, the present invention is to provide an all-sky camera and an aerial weather observation system capable of 24-hour aerial weather observation without being affected by time and weather. Specifically, the present invention is to provide an all-sky camera and an aerial weather observation system capable of capturing a clear all-season image even at night when illumination is low, rain or snowfall, and capable of accurately calculating cloud height and cloud volume.

Furthermore, an object of the present invention is to provide an aerial weather observation system capable of collecting data independently of an all-sky camera and analyzing an all-sky image.

In order to solve the above problems, the control method of the aerial weather observation system according to the present invention includes the steps of receiving an all-sky image of the sky captured by each of a plurality of all-sky cameras and shooting date and time information matched to the all-sky image, the photographing Selecting at least a part of the received all-season image based on the date and time information, and calculating at least one of the cloud height and the amount of clouds included in the all-season image based on the selected all-season image and the photographing date and time information may be generated based on a reference time of each of the plurality of all-sky cameras synchronized with each other.

Furthermore, the aerial weather observation system according to the present invention includes a plurality of all-sky cameras and an observation server, wherein the plurality of all-sky cameras include a photographing unit for photographing an all-sky image of the sky from each of the plurality of all-sky cameras, the photographed and a controller configured to match and store the photographing date and time information on which the all-season image was captured to the all-season image, and a communication unit configured to transmit the all-season image matched with the photographing date and time information to the observation server, wherein the observation server matches the all-season image Based on the captured shooting date and time information, select at least a part of the all-sky images received from each of the plurality of all-sky cameras, and based on the selected image, the cloud height and amount of clouds included in the all-sky image and calculating at least one of the photographing date and time information, and may be generated based on a reference time of each of the plurality of all-sky cameras synchronized with each other.

As described above, the plurality of all-sky cameras according to the present invention may synchronize a reference time with each other based on time information included in a GPS signal. Accordingly, the plurality of all-sky cameras according to the present invention can share the same absolute reference time without any special manipulation by the user, even if they are located at a long distance.

Furthermore, the aerial weather observation system according to the present invention may select an all-sky image taken at the same time based on an absolute time reference. Therefore, since the aerial weather observation system according to the present invention calculates the cloud height and cloud amount from the all-sky image taken at the same time point, it is possible to accurately calculate the cloud height and cloud amount even when there is movement of the cloud.

Furthermore, airlines, airplane pilots, etc. can perform safe and economical flight by receiving the accurately calculated cloud height and cloud volume from the aviation weather observation system according to the present invention.

Furthermore, in the aerial weather observation system according to the present invention, the shutter speed and exposure time of the camera are adjusted according to the ambient illuminance, so that it is possible to take all-sky images even at night when the illuminance is low. Therefore, since the aviation weather observation system according to the present invention can observe aerial weather at night, it provides 24-hour aviation weather information so that the aircraft can safely operate without time restrictions.

In particular, the aerial weather observation system according to the present invention can take a clear all-season image even in adverse weather conditions such as rain or snow by photographing an all-season image based on the illuminance values received from two illuminance sensors.

Furthermore, the all-day camera according to the present invention arranges a heating unit around the lens protection unit that protects the fisheye lens (ex: the lower part of the lens protection unit), and foreign substances (ex: hail ), etc.) may be provided with an all-round camera that can be removed. Accordingly, the aerial weather observation system according to the present invention can perform aviation weather prediction without being restricted by weather.

Furthermore, the all-sky camera according to the present invention transmits the photographed all-sky image to the observation server according to the communication means, so that the observation server can be installed at a location independent of the all-sky camera. Accordingly, the observation server according to the present invention may receive all-season images from a plurality of all-season cameras disposed in a wide range of places to make comprehensive aerial weather prediction.

1 is a conceptual diagram for explaining the arrangement of an all-sky camera in an airport according to the present invention.
Figure 2 is a conceptual diagram for explaining the installation table on which the all-sky camera according to the present invention is installed.
3 is a conceptual diagram illustrating an aerial weather observation system according to the present invention.
4A and 4B are conceptual diagrams for explaining a plurality of all-season cameras that take an all-season image.
5a and 5b are conceptual views for explaining the structure of the all-sky camera according to the present invention.
7A and 7B are conceptual views for explaining a method for controlling an all-sky camera according to the present invention.
8A and 8B are conceptual diagrams for explaining the whole image data according to the present invention.
9 is a conceptual diagram for explaining a method of selecting an all-sky image for cloud height and cloud amount calculation in the observation server according to the present invention.
10 is a conceptual diagram for explaining a method for selecting an all-sky camera in the observation server according to the present invention.
11 is a conceptual diagram for explaining aerial weather observation data generated by the observation server according to the present invention.

Hereinafter, the embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but the same or similar components will be given the same reference numbers regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "part" for components used in the following description are given or mixed in consideration of only the ease of writing the specification, and do not have distinct meanings or roles by themselves. In addition, in describing the embodiments disclosed in the present specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed herein is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention , should be understood to include equivalents or substitutes.

Terms including an ordinal number such as 1st, 2nd, etc. may be used to describe various elements, but the elements are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as “comprises” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

The present invention relates to an all-sky camera used for aerial weather observation and an aerial weather observation system using the all-sky camera.

“Aviation weather” means the weather conditions related to the safe flight, take-off, landing and economical operation of aircraft, and includes fog in the vicinity of the airfield, air flow in the route, wind direction, wind speed, and cloudiness. , cloud height (altitude at the bottom of the cloud), atmospheric pressure, temperature, visibility, and the like. In particular, for safe flight, accurate cloud height and cloud volume information are required. Therefore, for convenience of explanation, the process of observing (calculating, measuring) cloud height and cloud volume using an all-sky camera will be described as an example below, but in the present invention, observing (calculating, measuring) cloud height and cloud volume is not aeronautical meteorology. can be understood as observing (analyzing).

The all-sky camera 100 according to the present invention is used to collect and provide aviation weather information for the safe operation of an aircraft. Hereinafter, an aerial weather observation system using the all-sky camera 100 and the all-sky camera according to the present invention together with the drawings will be described in detail.

1 is a conceptual diagram for explaining the arrangement of an all-sky camera in an airport according to the present invention. Figure 2 is a conceptual diagram for explaining the installation table on which the all-sky camera according to the present invention is installed, Figure 3 is a conceptual diagram for explaining the aerial weather observation system according to the present invention, Figures 4a and 4b are a plurality of shooting all-sky images is a conceptual diagram for explaining the omnidirectional camera of, FIGS. 5a and 5b are conceptual diagrams for explaining the structure of the omnidirectional camera according to the present invention, and FIGS. 7a and 7b are conceptual diagrams for explaining the control method of the omnidirectional camera according to the present invention 8A and 8B are conceptual diagrams for explaining all-sky image data according to the present invention, and FIG. 9 is a conceptual diagram for explaining a method of selecting an all-sky image for cloud height and cloud amount calculation in the observation server according to the present invention. , FIG. 10 is a conceptual diagram for explaining a method of selecting an all-sky camera in the observation server according to the present invention, and FIG. 11 is a conceptual diagram for explaining aerial weather observation data generated by the observation server according to the present invention.

As shown in FIG. 1 , the all-sky camera 100 according to the present invention is disposed at the airport 1 to photograph the sky. For example, a first all-over camera 100a is disposed in front of the first airport terminal 1a, a second all-over camera 100b is disposed in front of the second airport terminal 1b, and the first airport terminal 1a and In the vicinity of the runways 1c and 1d existing between the second airport terminals 1b, the third all-sky camera 100c and the fourth all-sky camera 100d may be disposed. A plurality of all-sky cameras 100a, 100b, 100c, 100d disposed in the entire area of the airport 1 can take a wide range of the sky through a fish eye lens at their respective positions. However, this is only an example for convenience of explanation, and one all-sky camera 100 may be installed in the airport 1, etc., and when a plurality of cameras are installed, the number is not limited.

On the other hand, the all-sky camera 100 captures the all-sky study, including the cloud state of the whole sky, the horizon, and the like, and the image of the sky photographed through the all-sky camera 100 is called “all sky image” in the present invention.

By applying the stereo camera principle to the all-sky images taken from the plurality of all-sky cameras 100, it is possible to accurately measure the height of the cloud, that is, the cloud height and the amount of clouds by observing a target (cloud) at one point.

Specifically, when trying to calculate the cloud height and cloud volume observed through the two all-sky cameras 100, the triangulation method can be used. Furthermore, when clouds are simultaneously photographed with three all-sky cameras 100 rather than two all-sky cameras 100 to calculate cloud height and cloud volume, measurement of cloud height and cloud volume is relatively more accurate than when two all-sky cameras 100 are used. This is possible. That is, the more the number of all-sky cameras 100 photographing a region of the sky, the more accurate cloud height and cloud volume can be calculated. Therefore, it may be preferable to arrange a plurality of all-sky cameras 100 for accurate cloud height measurement.

As such, the all-sky camera 100 disposed in the airport may be disposed with a separation distance (S). For example, the first all-day camera 100a disposed in front of the first airport terminal 1a and the second all-day camera 100b disposed in front of the second airport terminal 1b may have a separation distance of about 2.5 km. (Actually, the 1st and 2nd airport terminals are located about 2.5km apart).

On the other hand, the all-sky camera 100 according to the present invention may be disposed on the installation table 200, as shown in FIG.

The installation platform 200 is fixedly installed on the ground 2a of the airport or the concrete block 2b of the ground, and the all-sky camera 100 is disposed on the installation platform 200, without damaging structures such as the runway of the airport, It is possible to simply and easily place (or remove) the omnidirectional camera 100 .

The mounting table 200 may include a bottom surface 210 , a pillar 220 , a pedestal 230 , a distribution board 240 , and a branch wire 250 .

The bottom surface 210 is in contact with the ground (2a) or the concrete block (2b) and may serve to support other components of the installation table (200). The bottom surface 210 may be fixed to the concrete block 2b by assembling an anchor 211 or the like.

The pillar 220 is formed to extend from the bottom surface 210 to a predetermined height, and serves to connect the bottom surface 210 and the support 230 such that the support 230 is located at a predetermined height from the bottom surface 210 . can do.

The pedestal 230 may serve as a pedestal on which the all-sky camera 100 is placed. The all-sky camera 100 is disposed on the pedestal 230, and may be disposed at a location separated by a predetermined height from the ground 2a. By disposing the all-sky camera 100 at a certain height from the ground 2a, it is possible to prevent the view of the all-sky camera 100 from being blocked from obstacles existing within a certain height from the ground.

Furthermore, the distribution board 240 is disposed on one area or the bottom surface 210 of the pillar 220 , and may serve to supply and distribute power to the all-sky camera 100 .

In this way, by arranging the all-sky camera 100 in the airport using the installation table 200, the all-sky camera 100 can be easily and quickly disposed without damaging the structure of the airport. However, the all-sky camera 100 does not necessarily have to be disposed on the installation table 200, and may be disposed directly on the ground (or concrete block) in the airport. Therefore, hereinafter, for convenience of explanation, the omni-sky camera 100 will be described as being disposed in the airport without a separate reference to the installation platform 200 , but this means that the omni-sky camera 100 is installed on the installation table 200 . It may include the case of placement.

On the other hand, as shown in FIG. 3 , the aerial weather observation system according to the present invention may include a plurality of all-sky cameras 100 and an observation server 300 .

The observation server 300 may receive all-sky images and photographing date and time information from the plurality of all-sky cameras 100 , and analyze the all-sky images to calculate cloud heights and cloud amounts.

Here, “shooting date and time information” is generated based on the reference time of each of the plurality of all-season cameras 100 synchronized with each other, and the shooting date (ex: April 21, 2021) when the all-sky camera 100 took the all-season image and shooting time (ex: 07:55:10).

Hereinafter, for convenience of explanation, the plurality of all-day cameras 100 will be referred to as a first all-day camera and a second all-day camera. Furthermore, i) the first all-season image taken by the first all-day camera, the first all-season image, and the photographing date and time information related to the first all-season image are named as the first photographing date and time information, ii) the all-season image captured by the second all-season camera The second all-season image and the photographing date and time information of the second all-season image are called second photographing date and time information.

Meanwhile, the observation server 300 may calculate the cloud height and the cloud amount by using the all-sky image received from the all-sky camera 100 . The observation server 300 may calculate cloud height and cloud volume by using a single all-sky image, but it is more accurate Cloud height and cloud volume can be derived.

To this end, the observation server 300 may calculate cloud height and cloud volume by matching all sky images captured at the same point at the same time by the plurality of all-sky cameras 100 . For example, as shown in FIG. 4A , if the first all-season image photographed by the first all-day camera 100a and the second all-season image photographed by the second all-season camera 100b were taken at the same time point, observation The server 300 may calculate cloud height and cloud volume by analyzing the same region 4 equally included in the first and second all-sky images.

On the other hand, as described above, since the plurality of all-sky cameras 100 are disposed with a distance from each other, if there is even a slight difference in the time set between the plurality of all-sky cameras 100, the cloud height calculated from the photographed all-sky image And the error range of cloudiness is widened.

For example, it is assumed that the time of the first all-time camera is set 1 second earlier than the second all-time camera. In this case, the first all-day image taken from the first all-day camera at 15:00:00 and the second all-season image photographed from the second all-day camera at 15:00:00 are taken at the same 15:00:00 It has date and time information, but the shooting time has an error of 1 second. Since the average speed of clouds is about 25Km/h to about 50Km/h, the first all-sky image and the second all-sky image captured with an error of 1 second are images of clouds existing at different locations.

Therefore, since it is difficult for the observation server 300 to calculate the exact cloud height and amount through the first all-sky image and the second all-sky image having a time error, a plurality of all-sky cameras 100 take the all-sky image at the same time. that is most important Furthermore, in order to shoot an all-season image at the same time, the plurality of all-day cameras 100 must be set for the same time based on the same reference.

To this end, the all-sky camera 100 according to the present invention may receive the GPS time information from the artificial satellite 3 to set the time.

Here, “time information” may mean a time operated by a GPS satellite group. Since the GPS time information does not take the rotation of the earth into account, it is an absolute time in which periodic corrections such as leap seconds are not inserted, unlike Coordinated Universal Time (UTC). Therefore, the omni-celestial camera 100 according to the present invention receives GPS time information from the artificial satellite 3 and sets the time, so that the omni-celestial cameras 100 located at a distance can have the same time based on the absolute time. .

Accordingly, if the photographing date and time information received from the plurality of all-sky cameras 100 are identical to each other, the observation server 300 may determine that the all-sky image captured at the corresponding time was captured at the same time.

On the other hand, the observation server 300 according to the present invention may calculate the cloud height and the cloud amount by using four all-sky cameras 100 as shown in FIG. 4B in order to improve the accuracy of calculating the cloud height and the cloud amount.

Specifically, the first all-encompassing camera 100a to the fourth all-sky camera 100d may be disposed at the vertex positions of the diamond. In this case, the observation server 300 includes i) first to fourth all-sky images captured at the same time by the first all-sky camera 100a to the fourth all-sky camera 100d, respectively, and ii) the first all-sky camera. Accurate cloud height and cloud volume can be calculated using the separation distances S1, S2 ... S6 between (100a) to the fourth all-sky camera 100d.

As such, in order for the observation server 300 to calculate the exact cloud height and amount of clouds, i) a clear all-sky image and ii) information on the shooting date and time at which the all-sky image was captured is required.

Hereinafter, in order to calculate the exact cloud height and amount of clouds in the observation server 300, the structure and control method of the all-sky camera 100 so that a plurality of all-sky cameras 100 can take a clear all-sky image at the same time. Let's take a look at

As shown in FIG. 5A , the all-sky camera 100 may include a body 110 , a photographing unit 120 , and a GPS receiver 111 .

A photographing unit 120 capable of photographing an all-sky image is provided inside the main body 110 , and the lens 121 and the aperture 122 of the photographing unit 120 may be exposed on the upper portion of the main body 110 .

Here, the photographing unit 120 is an optical system capable of photographing the entire sky, and may include a lens 121 , an aperture 122 , and an internal illuminance sensor 123 (a second illuminance sensor). For example, the photographing unit 120 may be a Digital Single Lens Reflex (SLR).

The lens 121 collects light to form an image on the film (sensor), and a standard lens, a wide-angle lens, a micro lens, a telephoto lens, a zoom lens, a prime lens, etc. can be used. It is preferable to use a fish-eye lens.

The aperture 122 may serve to adjust the amount of light entering through the lens 121 .

On the other hand, the GPS receiver 111 is for receiving a signal transmitted from the artificial satellite. The all-sky camera 100 according to the present invention can set the time of the control unit 150 using a signal sent from an artificial satellite, so that a plurality of all-sky cameras 100 have the same reference time. Through this, the observation server 300 that has received the plurality of all-sky images from the plurality of all-sky cameras 100 can calculate the cloud height and cloud amount very accurately and efficiently by using the all sky images captured at the same time point. More specific details will be described later.

On the other hand, since the all-sky camera 100 is generally disposed outdoors to take an all-day image, there is a very high possibility that foreign substances (ex: snow, fogging, etc.) are attached to the lens 121 . In this case, the all-sky camera 100 cannot take a clear all-sky image due to foreign substances, and the observation server 300 that receives the unclear all-sky image from the all-sky camera 100 may not be able to accurately calculate cloud height and cloud volume.

In order to prevent this, the all-sky camera 100 according to the present invention may further include a lens protection unit 112 that protects the lens 121 from the outside.

Specifically, the lens protection unit 112 is configured to protect the lens 121, the diaphragm 122, and the internal illuminance sensor 123 (the second illuminance sensor) from the outside. (123, the second illuminance sensor) is made to cover, and may be formed of a material such as glass or acryl so that light can pass through the lens protection unit 112 to be transmitted to the lens 121 . For example, the lens protection unit 112 may have the same diameter as the lens 121 , may be formed of a glass material, and may be a hemispherical dome with an empty interior.

Furthermore, the all-sky camera 100 may further include a heating unit 113 . Meanwhile, the heat generating unit 113 used herein is referred to as a heat generating unit, but may perform both heat generation and endothermic heat.

The heat generating unit 113 may transfer heat to the lens protecting unit 112 . Specifically, the heating unit 113 includes i) a heater (including all heaters using infrared rays, dry bulbs, electric stoves, etc.), ii) lamps (infrared rays, light emitting diodes (LEDs), low pressure sodium, filaments, mercury, All lamps using argon, etc.), iii) heating wires (including all heating wires using New Jiro, silicon, carbon, etc.), iv) carbon compositions, etc. may be composed of a heating element.

Furthermore, the heating unit 113 may be located in one area of the lens protecting unit 112 to transfer heat to the lens protecting unit 112 . Specifically, the heating unit 113 is disposed in i) around the lens protection unit 112 , ii) under the lens protection unit 112 or in the lens protection unit 112 , to transfer heat to the lens protection unit 112 . plays a role The heat transferred from the heating unit 113 may serve to evaporate the fogging (a phenomenon in which water vapor forms water droplets due to a temperature difference between inside and outside) or accumulated snow in the lens protection unit 112 .

In FIG. 5B , the heating part 113 is shown as being disposed under the lens protection part 112 (the lower part of the hemispherical lens protection part 112 ), but the heating part 113 is heated to the lens protection part 112 . It can be placed anywhere, as long as it can transmit .

That is, the heating unit 113 may serve to remove the fog and accumulated snow on the lens protection unit 112 , so that the all-sky camera 100 acquires a clear all-sky image.

Meanwhile, the all-sky camera 100 may further include an illuminance sensor 114 .

The illuminance sensor 114 is a sensor that measures the brightness around the all-sky camera 100 . The degree of opening and closing of the aperture 122, ISO sensitivity, etc. (shooting conditions) are adjusted according to the brightness around the all-sky camera 100 detected through the illuminance sensor 114, and the all-sky camera 100 is clear in both day and night image can be obtained.

The illuminance sensor 114 is preferably disposed above the body 110 in order to measure the amount of light entering through the lens 121 , but is not limited thereto.

Meanwhile, as described above, the photographing unit 120 may include an internal illuminance sensor 123 for photographing separately from the illuminance sensor 114 provided in the main body 110 . For example, the internal illuminance sensor 123 for photographing may mean the illuminance sensor 123 provided in the DSLR itself.

Hereinafter, in order to avoid confusion of terms, the illuminance sensor 114 provided in the body 110 is used interchangeably with “illuminance sensor”, “first illuminance sensor”, “first sensor” and “external illuminance sensor” and give the same identification number as the illuminance sensor 114 provided in the main body 110 .

Furthermore, the illuminance sensor 123 provided in the photographing unit 120 is named “second illuminance sensor”, “second sensor” and “internal illuminance sensor”, and the illuminance sensor 123 provided in the photographing unit 120 . ) to be given.

Meanwhile, the all-sky camera 100 may further include a communication antenna 115 .

The communication antenna 115 is i) between the omnidirectional camera 100 and the observation server 300, ii) between the omnidirectional camera 100 and other omnidirectional cameras 100, iii) between the omnidirectional camera 100 and the external server. For smooth communication, it is a device that transmits or receives radio waves. The communication antenna 115 is not necessarily a necessary configuration. Accordingly, the user can configure the all-sky camera 100 by selecting the communication antenna 115 as needed.

In this way, the lens 121 and the aperture 122 of the photographing unit 120 are exposed outside the main body 110 of the all-sky camera 100 according to the present invention, and the GPS receiver 111 and the lens protection unit 112 are exposed. , at least one of the heating unit 113 , the illuminance sensor 114 and the communication antenna 115 may be attached thereto.

Hereinafter, the internal structure of the all-sky camera 100 will be described.

As shown in FIG. 5B , the all-sky camera 100 may include at least one of a photographing unit 120 , a time synchronization unit 130 , a communication unit 140 , a power supply unit 150 , and a control unit 160 .

As described above, the photographing unit 120 is an optical system capable of photographing the entire sky, and may include a lens 121 , an aperture 122 , and a second illuminance sensor 123 . For example, the photographing unit 120 may be a Digital Single Lens Reflex (SLR).

Furthermore, among the above components, the time synchronization unit 130 may set (synchronize) the time of the control unit 140 using GPS time information among signals received from the artificial satellite 3 through the GPS receiver 111 . have.

Here, “time information” may mean the time operated by the GPS satellite group, as described above. Since the GPS time information does not take the rotation of the earth into account, it is an absolute time in which periodic corrections such as leap seconds are not inserted, unlike Coordinated Universal Time (UTC). Therefore, the omni-celestial camera 100 according to the present invention receives GPS time information from the artificial satellite 3 and sets the time, so that the omni-celestial cameras 100 located at a distance can have the same time based on the absolute time. .

The communication unit 140 may be configured to communicate with at least one of the observation server 300 , another all-sky camera 100 , and an external server (not shown). The communication unit 140 may include one or more modules for connecting the all-sky camera 100 to one or more communication networks or communication networks. The communication unit 140 may include at least one of a mobile communication module, a wireless Internet module, and a short-range communication module. For example, the communication unit 140 may include an LTE router.

Furthermore, the power supply unit 150 may supply driving power (or operating power) to the all-sky camera 100 .

The power supply unit 150 receives at least one of external power or internal power under the control of the control unit 160 and supplies power to each component included in the all-sky camera 100 .

The power supply unit 150 may include a built-in battery or a replaceable battery, or a rectifier that converts supplied external alternating current (AC) power into direct current (DC) power.

The control unit 160 may control the overall configuration included in the all-sky camera 100 . Specifically, the controller 160 may control the degree of opening and closing of the diaphragm 122 of the photographing unit 120 and the shutter speed based on the illuminance value measured by the illuminance sensor 114 .

Furthermore, the control unit 160 matches the entire image generated through the shooting of the shooting unit 120 with the shooting date and time information and stores it in a storage unit (not shown), and there is a preset period or a request from the observation server 300 . In this case, the communication unit 140 may be controlled so that the all-sky image and the shooting date and time information are transmitted to the observation server 300 .

Meanwhile, the all-sky camera 100 according to the present invention may further include a heating control unit 170 .

The heating control unit 170 may control ON/OFF of the heating unit 113 . The heating control unit 170 determines that it is necessary to turn on/off the heating unit 113 in i) every preset period, ii) when there is a request for on/off of the heating unit 113 from the observation server 300 , iii) when it is determined that the on/off of the heating unit 113 is necessary On/off (supply and cut off current) of the heating unit 113 can be controlled.

In relation to the case in which it is determined that on/off of the heating unit 113 is necessary in iii) above, the heating control unit 170 includes an illuminance value measured through the illuminance sensor 114 and an illuminance value of the whole image taken based on the illuminance value. When the brightness information does not match, it is determined that foreign substances (fogging, snow, etc.) are present in the lens protection unit 112 , and the heating unit 113 may be turned on.

Furthermore, when the illuminance value measured through the illuminance sensor 114 and the brightness information of the all-sky image taken based on the illuminance value match, the heat control unit 170 may store foreign substances (fogging, snow etc.) is determined to exist, and the heating unit 113 may be turned on (Off).

Here, “brightness information of the all-sky image” may be understood as the illuminance of light incident through the lens 121 .

On the other hand, the heating control unit 170 is a configuration that performs one function of the control unit 160 (controlling the heating unit), and may be included in the control unit 160 . Therefore, in the following description, the heating control unit 170 and the control unit 160 are not divided, and the control unit 160 is unified.

Meanwhile, the all-sky camera 100 according to the present invention may further include a hub 180 and a storage unit (not shown).

The hub 180 may be understood as a communication device having a switching function used as a tangential device of a terminal when constructing a local area network.

The storage unit (not shown) stores i) information supporting various functions of the all-sky camera 100, ii) information collected from the GPS receiver 111 and the illuminance sensor 114, and iii) other information related to all-season images. Save.

The storage unit (not shown) is a plurality of application programs (application program or application) driven by the all-sky camera 100, firmware (firmware), various information for the operation of the remote control module 100, control messages , can store control codes.

At least some of the application programs may be downloaded from an external server through the communication unit 140 . In addition, at least some of these applications may exist on the all-sky camera 100 from the time of shipment.

On the other hand, the application program, stored in the omnidirectional camera 100, installed on the omnidirectional camera 100, the control unit 160 may be driven to perform the operation (or function) of the omnidirectional camera (100).

Furthermore, the storage unit (not shown) may store iii) the whole image. In this case, the storage unit (not shown) may be a component included in the photographing unit 120 . For example, the whole image may be stored in a memory included in the DSLR.

However, hereinafter, for convenience of explanation, the memory included in the photographing unit 120 is not separately divided, i) information supporting various functions of the all-sky camera 100, ii) GPS receiver 111, and illuminance sensor The information collected from (114) and iii) all images will be described as being stored in the storage unit (not shown).

Hereinafter, based on the structure and configuration of the all-sky camera 100, a method for the all-sky camera 100 to acquire an all-sky image and a method for the observation server 300 to analyze aerial weather information using the all-sky image will be described in detail. to be explained as

First, in the all-sky camera 100 according to the present invention, a process of receiving a GPS signal from the artificial satellite 3 may be performed. That is, the GSP receiver 111 of the all-sky camera 100 may receive a GPS signal.

The GPS signal may include GPS time information.

Here, “GPS time information” may mean a time operated in a GPS satellite group, as described above. Since the GPS time information does not take the rotation of the Earth into account, it is an absolute time in which periodic corrections such as leap seconds are not inserted, unlike Coordinated Universal Time (UTC). Accordingly, the omni-celestial camera 100 according to the present invention receives GPS time information from the artificial satellite 3 and sets the time, so that the omni-celestial cameras 100 located at a distance have the same time based on the absolute time. . In this specification, "GPS time information" is used interchangeably with "time information".

In the all-day camera 100 according to the present invention, based on the GPS time information included in the GPS signal, a process of synchronizing the reference times of each of the plurality of all-day cameras 100 with each other may be performed.

Specifically, the time synchronizer 130 may extract GSP time information from the GPS signal and set the time of the controller 160 based on the GPS time information. For example, when the time of the controller 160 is set to April 2021 21:07:55 seconds 02 seconds, and the GPS time information is April 2021 21:07:55 seconds 00 seconds, the time synchronization unit 130 ) may set the time of the controller 160 to April 2021 21:07:55 seconds 00 seconds.

Furthermore, in the all-sky camera 100 according to the present invention, a process of photographing an all-sky image of the sky for aerial weather observation may be performed. That is, the photographing unit 120 may photograph the whole image.

“All-cheon image” may mean an image or image that is taken for all-cheon study, including the cloud state of the whole sky, the horizon, and the like. The all-sky image may include a sky area corresponding to the viewing angle of the lens 121 of the all-sky camera 100 at the location where the all-sky camera 100 is disposed.

Meanwhile, the controller 160 may control the photographing unit 120 so that i) when there is a request for capturing an all-season image from the observation server 300 , or ii) an all-season image is captured every preset period. The preset period may be set through the observation server 300, but is not limited thereto.

Specifically, when there is a request for capturing an all-season image from the observation server 300 , the controller 160 may control the photographing unit 120 to capture an all-season image even when a preset period does not arrive. Thereafter, the control unit 160 may control the photographing unit 120 to shoot the all-season image when a preset period is reached based on the point in time at which the all-season image was captured before the observation server 300 requests to take the all-season image. .

For example, the control unit 160 may control the photographing unit 120 so that an all-sky image is captured every 10 seconds, and the observation server 300 2 seconds after the photographing unit 120 captures the all-sky image. When there is a request for capturing an all-season image from , the control unit 160 may control the photographing unit 120 to capture an all-season image regardless of whether a period of 10 seconds has been reached. In this case, the control unit 160 controls the observation server 300 at a point in time 10 seconds have elapsed from before the point of time when the all-season image was taken according to the request of the observation server 300 (that is, 8 seconds from the point of time when the all-season image was taken according to the request for taking the all-season image). at the time point), the photographing unit 120 may be controlled to photograph the whole image.

That is, the all-season camera 100 according to the present invention can not only time-series analysis of changes in aviation weather by periodically taking all-season images, but also selectively acquire all-season images at a necessary point in time, so it is very sensitive to changes in aviation weather.

Furthermore, the control unit 160 may match the all-sky image and the photographing date and time information with each other and store it in the storage unit. In this case, the controller 160 may record (eg: time stamp) the shooting date and time information on the whole image and store it in a storage unit to be stored.

Here, “shooting date and time information” is generated based on the reference time of each of the plurality of all-season cameras 100 synchronized with each other, and the shooting date (ex: April 21, 2021) when the all-sky camera 100 took the all-season image and shooting time (ex: 07:55:10).

Furthermore, the controller 160 may match the information related to the all-time image and the all-time camera and store it in the storage unit.

Here, the information related to the omni-camera may be at least one of i) an identification number of the omni-camera and ii) location information of the omni-camera.

For example, in the first all-day camera 100a installed in front of the first airport terminal 1a of FIG. 1, the identification number (no. At least one of them may be matched and stored.

On the other hand, in the all-sky camera 100 according to the present invention, the process of transmitting the all-sky image and shooting date and time information to the observation server 300 may be performed. That is, the communication unit 140 may transmit the all-sky image and shooting date and time information to the observation server 300 .

Furthermore, the communication unit 140 may transmit information (identification information and location information) related to the all-sky camera 100 to the observation server 300 together with the all-sky image.

Hereinafter, for convenience of explanation, i) all-weather image, ii) shooting date and time information, and iii) all-weather camera-related information, iv) shooting conditions (aperture opening/closing degree, ISO sensitivity, shooting speed, number of shots), v) shooting Let the illuminance value set in the condition be named “all-weather image data”.

The control unit 160 may control the communication unit 140 to transmit the all-cheon image data stored in the storage unit to the observation server 300 every preset period.

In this case, the preset period may be set to be relatively longer than the period set to capture the all-season image. For example, the control unit 160 may control the capturing unit 120 to shoot an all-season image every 10 seconds, and control the communication unit 160 to transmit all-season image data to the observation server 300 every 60 seconds. have.

Hereinafter, a method for the observation server 300 to calculate cloud height and cloud volume based on the all-sky image received from each of the plurality of all-sky cameras 100 will be described in detail.

In the control method of the aerial weather observation system according to the present invention, i) a process of receiving an all-sky image of the sky captured by each of the plurality of all-sky cameras 100 and ii) a photographing date and time information matched to the all-sky image may be performed ( S610).

Specifically, the observation server 300 may receive from the plurality of all-season cameras 100, at each predetermined period, the all-season image and shooting date and time information photographed by each of the plurality of all-season cameras 100 . That is, the observation server 300 receives the first all-season image and the first photographing date and time information from the first all-season camera 100a, and receives the second all-season image and the second photographing date and time information from the second all-season camera 100b. can do.

The observation server 300 may further receive all-season image data from the plurality of all-season cameras 100 .

The observation server 300 may match i) all-season image, ii) shooting date and time information, and iii) all-season image data received from each of the plurality of all-season cameras 100 and store it in the storage unit of the observation server 300 .

Here, the storage unit of the observation server 300 may include i) a WEB server, ii) a data processing server, iii) a DB server, and iv) a storage server.

Meanwhile, in the method for controlling an aerial weather observation system according to the present invention, a process of selecting at least some of the received all-sky images based on the shooting date and time information may be performed (S620). Furthermore, in the control method of the aerial weather observation system, the process of calculating the cloud height and amount of clouds included in the all-sky image based on the selected all-sky image may be performed (S630).

Specifically, the observation server 300 may select an all-sky image matched with photographing date and time information defining a specific point in time to calculate cloud height and cloud volume. That is, the observation server 300 may calculate the cloud height and amount of clouds included in the all-sky image by selecting and comparing the all-sky images having the same photographing date and time information.

In this case, the selected omnidirectional images may be captured by different omnidirectional cameras 100 and may include the same area (same object).

As an example, as shown in FIG. 4A , the first all-sky image captured by the first all-sky camera 100a and the second all-sky image captured by the second all-sky camera 100b are the same area 4 of the sky contains The observation server 300 selects and compares the all-season images having the same shooting date and time information (ex: April 21, 2021 07:55:10 seconds) among the plurality of first all-season images and the plurality of second all-season images, Cloud height (5) and cloud volume can be calculated.

Meanwhile, the observation server 300 may use the separation distance S between the plurality of all-sky cameras 100 when calculating the cloud height and cloud amount.

To this end, the observation server 300 may calculate the separation distance S based on the location information of the plurality of all-sky cameras 100 . For example, the observation server 300 may calculate cloud height and cloud volume by applying the separation distance S between the plurality of all-sky cameras 100 to triangulation as a parameter.

To this end, the observation server 300 may match the once calculated separation distance S with a plurality of all-sky cameras and store it in the storage unit of the observation server 300 .

Furthermore, the observation server 300 may calculate the amount of clouds by using the RGB color of the all-sky image. Specifically, the observation server 300 may remove the shielding in the image from the RGB image of the all-cloud image, and classify the all-environment image according to the GBR pixel distribution. Thereafter, the observation server 300 may calculate the amount of clouds by using the cloud pixels included in the all-sky image.

Furthermore, the observation server 300 may calculate the cloud height and cloud volume included in the all-sky image by the observation model generated through machine learning.

However, the method of calculating the cloud height and cloud amount is an example, and is not limited thereto.

Furthermore, the observation server 300 may use all-sky images captured by a plurality of all-sky cameras 100 for more accurate cloud height and cloud volume calculation. In this case, the whole image may be an even number (two, four, etc.), but does not necessarily have to be an even number.

As an example, the observation server 300, as shown in Fig. 4b, when the all-sky images taken by the four all-sky cameras 100 all include the same area of the sky, the four all-sky cameras 100 are Cloud height and cloud volume can be calculated using the all-sky image taken at the same time point.

Furthermore, the observation server 300 may match and store a plurality of all-sky cameras 100 with each other. Here, the matched plurality of all-sky cameras 100 may mean all-sky cameras 100 that transmit the all-sky images used for calculating cloud height and cloud volume.

That is, after the observation server 300 matches the all-sky cameras 100 that photograph the same area, the cloud height and cloud volume calculation are repeated over time using the all-sky image of the matched all-sky camera 100. , it is possible to shorten the time for calculating cloud height and cloud volume.

In the above, the process of calculating the cloud height and amount of clouds by capturing an all-sky image after setting the time based on the GPS signal in the plurality of all-sky cameras 100 and collecting the all-sky image in the observation server 300 has been described.

The present invention provides various methods for obtaining an all-sky image with a clear object in order to analyze not only accurate cloud height and cloud volume calculation, but also aviation meteorological factors necessary for safe aircraft operation. Hereinafter, a method of controlling the all-day camera 100 to obtain a high-quality all-season image will be described.

The aerial weather observation system according to the present invention may set the shooting conditions of each of the plurality of all-sky cameras 100 by using the ambient illuminance of each of the plurality of all-sky cameras 100 .

In this case, the shooting condition is a setting item necessary for shooting an all-sky image, and may include at least one of i) the degree of opening and closing of the aperture 122, ii) ISO sensitivity, iii) shooting speed, and vi) the number of shots. .

On the other hand, the aerial weather observation system according to the present invention, as described above, includes a first illuminance sensor 114 attached to the outside of the main body 110 and a second illuminance sensor 123 included in the photographing unit 120 . can do.

The photographing unit 120 may be disposed inside the body 110 , and the lens protecting unit 112 may cover the lens 121 , the aperture 122 , and the second illuminance sensor 123 .

According to the structure of the all-sky camera 100 , the second illuminance sensor 123 included in the photographing unit 120 measures the intensity of light passing through the lens protection unit 112 . That is, the illuminance value of the second illuminance sensor 123 may have an error with the illuminance value around the all-sky camera 100 .

Therefore, the aerial weather observation system according to the present invention preferentially considers the illuminance value measured by the first illuminance sensor 114 attached to the outside of the main body 110, and each You can set shooting conditions.

Specifically, in the aerial weather observation system according to the present invention, when the illuminance value of the first illuminance sensor 114 is large, the degree of opening of the diaphragm is relatively small, and when the illuminance value is small, the degree of opening of the diaphragm is relatively large. can do. Through this, the all-sky camera 100 according to the present invention can acquire an all-sky image that can be used for aerial weather observation both during the day and at night.

Meanwhile, such shooting condition setting may be set in at least one of i) the controller 160 of the all-sky camera 100 , ii) the observation server 300 , and iii) an external remote terminal. That is, in the aerial weather observation system according to the present invention, setting the shooting conditions may be performed by the subject performing steps i) to iii) according to circumstances. However, hereinafter, for convenience of explanation, it will be described as an example of setting the shooting condition in the control unit 160 of the all-sky camera 100, but in this example, the observation server 300 or an external remote terminal is used as the performing subject. It can also be applied if

On the other hand, the first illuminance sensor 114 according to the present invention is attached to the outside of the main body 110, in the weather such as rain or snow, it may be foggy or snow accumulation. The lens protection unit 112 includes a heating unit 113 to remove fogging or snow accumulation, but the first illuminance sensor 114 does not have a separate heating unit to remove fogging or snow accumulation. difficult. In addition, since the all-sky camera 100 is disposed outdoors, it is vulnerable to foreign substances (dust, yellow sand) and the like.

In this case, a problem occurs in that the first illuminance sensor 114 cannot measure an accurate illuminance value due to foreign substances, and the control unit 160 sets the shooting condition of the imaging unit 120 based on the erroneously measured illuminance value. do. Accordingly, the photographing unit 120 captures an all-sky image according to an inaccurate photographing condition. In order to solve this problem, the aerial weather observation system according to the present invention sets the shooting conditions in consideration of both the first illuminance sensor 114 and the second illuminance sensor 123 . It will be described in detail together with FIGS. 7A and 7B.

First, the controller 160 may receive the illuminance value from the first illuminance sensor 114 and calculate the change amount of the illuminance value per unit time of the first illuminance sensor 114 ( S711 ).

Here, “the amount of change in the illuminance value of the first illuminance sensor 114 per unit time” may mean the illuminance value changed during a preset unit time.

The control unit 160 selects any one illuminance value from among the illuminance value of the first illuminance sensor 114 and the illuminance value of the second illuminance sensor 123 based on the change amount, and captures the selected illuminance value in an all-sky image You can set the shooting conditions for

Specifically, the controller 160 may determine whether the amount of change in the illuminance value per unit time of the first illuminance sensor 114 exceeds (or exceeds) a preset value (S712).

If the amount of change in the illuminance value of the first illuminance sensor 114 does not exceed (or exceed) a preset value, the controller 160 determines that there is no abnormality in the first illuminance sensor 114 and the first illuminance sensor ( 114) can be selected to set the shooting conditions (S713).

On the other hand, when the amount of change in the illuminance value of the first illuminance sensor 114 exceeds (or exceeds) a preset value, the controller 160 determines that an abnormality has occurred in the first illuminance sensor 114 and determines that the second illuminance An illuminance value of the sensor 123 may be received (S714).

Furthermore, the controller 160 may select the received illuminance value of the second illuminance sensor 123 and set it as a shooting condition for capturing an all-sky image (S715). In this case, the controller 160 protects the lens from the illuminance value of the second illuminance sensor 123 in consideration of the fact that the illuminance value of the second illuminance sensor 123 is the intensity of the light passing through the lens protection unit 112 . A corrected illuminance value corrected by the intensity of the light before passage of the unit 112 may be calculated, and shooting conditions may be set using the corrected illuminance value.

As an example, it is assumed that there is a clear day and snow falls between 1:00 PM and 2:00 PM. On a clear day, the amount of change of the first illuminance sensor 114 from 1:00 PM to 2:00 PM may be little or relatively small. In this case, the controller 160 may determine that the first illuminance sensor 114 operates normally and set the shooting condition using the illuminance value of the first illuminance sensor 114 . On the other hand, when it snows, the intensity of light incident on the first illuminance sensor 114 decreases due to the accumulated snow, and thus the amount of change in the illuminance value of the first illuminance sensor 114 may be relatively large. In this case, the controller 160 may determine that the first illuminance sensor 114 operates abnormally and set the shooting condition using the illuminance value of the second illuminance sensor 123 .

Furthermore, while setting the shooting conditions using the illuminance value of the second illuminance sensor 123 , the controller 160 determines that the first illuminance sensor 114 changes less than (or less than) a preset value. The shooting condition may be reset using the illuminance value of the illuminance sensor 114 . For example, the situation may be the same as when the snow accumulated on the first illuminance sensor 114 melts.

On the other hand, the aerial weather observation system 100 according to the present invention compares the illuminance value of the first illuminance sensor 114 with the illuminance value of the second illuminance sensor 123, and uses any one illuminance value to determine the shooting conditions. can be set.

First, the controller 160 receives the illuminance value of the first illuminance sensor 114 and the illuminance value of the second illuminance sensor 123 , and the illuminance value of the first illuminance sensor 114 and the second illuminance sensor 123 . It is possible to calculate a difference value (hereinafter referred to as a difference value) between the illuminance values (S721).

Furthermore, based on the difference value, the controller 160 selects any one illuminance value from among the illuminance value of the first illuminance sensor 114 and the illuminance value of the second illuminance sensor 123 , and applies the selected illuminance value. You can set the shooting conditions for video shooting.

Specifically, the controller 160 may determine whether the difference value exceeds (or exceeds) a preset value (S722).

If the difference value does not exceed (or exceed) a preset value, the controller 160 determines that both the first illuminance sensor 114 and the second illuminance sensor 123 are operating normally, It is possible to select an illuminance value of the illuminance sensor 114 and set a shooting condition for it (S723).

On the other hand, when the difference value exceeds (or exceeds) a preset value, the controller 160 determines that at least one of the first illuminance sensor 114 and the second illuminance sensor 123 is operating abnormally. Then, any one of the illuminance value of the first illuminance sensor 114 and the illuminance value of the second illuminance sensor 123 may be selected ( S724 ).

Specifically, the control unit 160 may select any one of the illuminance value of the illuminance value of the first illuminance sensor 114 and the illuminance value of the second illuminance sensor 123 based on whether power is supplied to the heating unit 113 . have.

As described above, the heating unit 113 is located in one area of the lens protection unit 112 to transfer heat to the lens protection unit 112 , and the lens protection unit 112 includes the first and illuminance sensors ( 114 ) and the second illuminance sensor 123 may be formed to cover only the second illuminance sensor 123 .

The heating unit 113 transfers heat to the lens protection unit 112 by the power supplied when the lens protection unit 112 is fogged or snow is accumulated, so that the lens protection unit 112 is fogged or fogged. It can remove accumulated snow.

The heat generating unit 113 may prevent the second illuminance sensor 123 from blocking the incident light by the fogging or accumulating snow on the lens protecting unit 112 even in rainy or snowy weather.

However, the first illuminance sensor 114 is not covered with a blocking film such as the lens protector 112 in order to measure an accurate illuminance value around the all-sky camera 100 , and does not include the heating unit 113 .

That is, when it rains or it snows, the illuminance value of the second illuminance sensor 123 is closer to the actual illuminance value around the all-sky camera 100 than the illuminance value of the first illuminance sensor 114. there may be

Accordingly, when power is supplied to the heating unit 113 in a state in which the difference value exceeds a preset value, the control unit 160 selects the illuminance value of the second illuminance sensor 123 and selects the illuminance value of the heating unit 113 . When power is not supplied to the , the illuminance value of the first illuminance sensor 114 may be selected.

Furthermore, the controller 160 may set a shooting condition by using the selected illuminance value (S725).

As such, the all-sky camera 100 according to the present invention takes an all-sky image under the shooting conditions in consideration of both the illuminance value of the first illuminance sensor 114 and the illuminance value of the second illuminance sensor 123, so a clear and clear all-sky image can be filmed.

On the other hand, the protective lens unit 112 according to the present invention has a heating unit 113 is disposed. The control unit 160 uses the heating unit 113 to evaporate the fogging or accumulated snow on the protective lens unit 112 to prevent an unclear all-sky image from being taken due to foreign substances accumulated in the protective lens unit 112 . can do.

Specifically, in the all-sky camera 100 , a process of controlling the power supplied to the heating unit 113 based on the heating control signal may be performed. That is, the control unit 160 may supply power to the heat generating unit 113 , adjust the amount of supplied power, or cut off the supplied power based on the heating control signal.

The observation server 300 may transmit a fever control signal to the all-sky camera 100 when it is determined that the all-sky image is not taken normally (eg: when the subject is not clear, the sky is not photographed, etc.).

Specifically, the observation server 300 may extract any one of sharpness and brightness from the whole image. The observation server 300 uses the all-sky camera 100 in at least one of i) the case where the extracted sharpness does not satisfy the preset sharpness, and ii) the case where the extracted brightness does not satisfy the preset brightness. A heating control signal for requesting power supply to 113 may be transmitted.

Furthermore, the observation server 300 supplies the heating unit 113 to the all-sky camera 100 when i) the extracted sharpness satisfies the preset sharpness, ii) the extracted brightness satisfies the preset brightness. It is possible to transmit a heating control signal requesting power off.

Furthermore, the observation server 300 may transmit a fever control signal to the all-sky camera 100 based on the user's input. That is, when the user determines that foreign substances (fogging, snow, etc.) exist in the lens protection unit 112 of the all-sky camera 100 through the all-sky image, the heating unit of the all-sky camera 100 through the observation server 300 ( 113) can be controlled on and off.

When the control unit 160 receives the heating control signal through the communication unit 140 , the control unit 160 may control the power supplied to the heating unit 113 based on the heating control signal.

Hereinafter, together with FIGS. 8A, 8B, 9 and 10 , a process for calculating cloud height and cloud volume by the aerial weather observation system according to the present invention will be described in more detail.

The all-season camera 100 may photograph an all-season image at every preset period, match information related to photographing an all-season image with the all-season image, and store it in the storage unit.

Information related to all-weather video shooting includes: i) shooting date and time information and ii) all-weather camera-related information (identification number and location information), iii) shooting conditions (aperture opening/closing degree, ISO sensitivity, shooting speed and number of shots), iv ) may include the illuminance value set in the shooting conditions. In the present invention, it has been described above that i) to iv) and the whole image are named “all image data”.

The all-season camera 100 may transmit the all-sky image data stored in the storage unit to the observation server 300 when there is a preset period (a period relatively longer than the period set for photographing) or a request from the observation server 300 . .

For example, FIG. 8A is the first all-season image data collected by the first all-day camera 100a of FIG. 4A , and FIG. 8B is the second all-season image data collected by the second all-day camera 100b of FIG. 4A .

As shown in FIGS. 8a and 8b, the first all-time image data and the second all-season image data include: i) shooting date information (811, 812, 821, 822), ii) identification numbers of the all-day camera (813, 823) , iii) location information of all-weather cameras (814, 824), iv) illuminance values (815, 825), v) ISO sensitivity (816, 826), vi) aperture opening/closing degree (817, 827), vii) shooting cycle ( 813, 823).

Through the all-sky image data of FIGS. 8A and 8B , the first all-day camera 100a took an all-sky image every 10 seconds in the morning of April 21, 2021, and the second all-sky camera 100b was It can be seen that on the morning of the 21st, the whole stream image was taken with a cycle of 20 seconds. That is, the photographing period of the first all-day camera 100a and the second all-day camera 100b is different from each other. Such a photographing period may be set based on the illuminance value or may be set by a user.

On the other hand, the observation server 300 stores the all-season image data received from the all-season camera 100 in the storage unit, compares the shooting date and time information of the all-season image data (811, 812, 821, 822), and at the same time You can select a full-scale image of a point.

For example, as shown in FIGS. 8A and 8B , the observation server 300 is i) on April 21, 2012 at 07:55:20 (hereinafter the first time point, 810a, 820a), the first full sky The camera 100a and the second all-time camera 100b take a full-scale image, ii) the first all-day camera 100a on April 21, 2012 at 07:55:40 (hereinafter the second time point, 810b, 820b) ) and the second all-day camera 100b may determine that the photographed all-season image.

Based on this, as shown in FIG. 9 , the observation server 300 calculates cloud height and cloud volume by i) comparing the first all-sky image 910a and the second all-sky image 920a captured at the first time point, and , ii) The cloud height and cloud volume may be calculated by comparing the first all-sky image 910b and the second all-sky image 920b captured at the second time point.

Meanwhile, the observation server 300 may calculate the height of clouds included in the all-sky image by selecting and comparing the all-sky images captured in the same area. The observation server 300 may select the all-sky camera 100 to photograph the same area based on the location and shooting conditions of the all-sky camera 100 . Furthermore, the user may select the all-sky camera 100 photographing the same area. To this end, the observation server 300 may receive a user's selection through the input unit.

On the other hand, as shown in FIG. 10 , when the observation server 300 intends to calculate the cloud height and amount of clouds 1011 existing in the first sky area 1010 , the first By selecting and comparing the all-sky image and the second all-sky image of the second all-sky camera 100b, the cloud height and amount of clouds 1011 existing in the first sky area 1010 may be calculated. Furthermore, when the observation server 300 intends to calculate the cloud height and amount of clouds 1021 existing in the second sky area 1020, the second all-sky image of the second all-sky camera 100b and the third all-sky camera ( By selecting and comparing the third all-sky image of 100c), the cloud height and cloud volume of the clouds 1021 existing in the second sky region 1020 may be calculated.

As described above, the observation server 300 may analyze the all-sky image to perform aerial weather observation including calculation of cloud height and cloud volume. Furthermore, the observation server 300 may generate aerial weather observation data (hereinafter, observation data) based on the analyzed aerial weather observation content. Hereinafter, the observation data generated by the observation server 300 will be described.

The observation server 300 may generate observation data 1100 using the analyzed cloud height and cloud volume, and may provide it to a meteorological agency, a control room, an airline, an airplane pilot, and the like.

To this end, the control method of the aerial weather observation system according to the present invention includes observation data 1100 including at least one of i) a selected all-sky image, ii) photographing date and time information, iii) calculated cloud height, and iv) calculated cloud volume. , and the process of transmitting the observation data 1100 to the external terminal so that the observation data 1100) is output from the external terminal may proceed.

Specifically, the observation data 1100 is, as shown in FIG. 11, i) location information 1110 where the all-weather camera is arranged, ii) weather information 1120, iii) an all-season photo 1130 taken by the all-weather camera, iv) photographing date and time information, v) location information 1140 for which cloud height and cloud volume are calculated, vi) calculated cloud amount 1150, vii) calculated cloud height 1160, and the like.

Meteorological offices, control rooms, airlines, airplane pilots, etc. can perform safe and economical flight by intuitively recognizing information necessary for airplane operation using the observation data 1100 provided by the present invention.

As described above, the plurality of all-sky cameras according to the present invention may synchronize a reference time with each other based on time information included in a GPS signal. Accordingly, the plurality of all-sky cameras according to the present invention can share the same absolute reference time without any special manipulation by the user, even if they are located at a long distance.

Furthermore, the aerial weather observation system according to the present invention may select an all-sky image taken at the same time based on an absolute time reference. Therefore, since the aerial weather observation system according to the present invention calculates the cloud height and cloud volume from the all-sky image taken at the same time point, it is possible to accurately calculate the cloud height and cloud volume even when there is movement of the cloud.

Furthermore, airlines, airplane pilots, etc. can perform safe and economical flight by receiving the accurately calculated cloud height and cloud volume from the aviation weather observation system according to the present invention.

Furthermore, in the aerial weather observation system according to the present invention, the shutter speed and exposure time of the camera are adjusted according to the ambient illuminance, so that it is possible to take all-sky images even at night when the illuminance is low. Therefore, since the aviation weather observation system according to the present invention can observe aerial weather at night, it provides 24-hour aviation weather information so that the aircraft can safely operate without time restrictions.

In particular, the aerial weather observation system according to the present invention can take a clear all-season image even in adverse weather conditions such as rain or snow by taking an all-season image based on the illuminance values received from two illuminance sensors.

Furthermore, the all-day camera according to the present invention arranges the heating unit 113 around the fish-eye lens to remove foreign substances (ex: hail, etc.) that block the view of the fish-eye lens during rain or snowfall. can provide Accordingly, the aerial weather observation system according to the present invention can perform aviation weather prediction without being restricted by weather.

Furthermore, the all-sky camera according to the present invention transmits the photographed all-sky image to the observation server according to the communication means, so that the observation server can be installed at a location independent of the all-sky camera. Accordingly, the observation server according to the present invention may receive all-season images from a plurality of all-season cameras disposed in a wide range of places to make comprehensive aerial weather prediction.

Meanwhile, the present invention described above may be implemented as a program that is executed by one or more processes in a computer and can be stored in a computer-readable medium (or recording medium).

Furthermore, the present invention as seen above can be implemented as computer-readable codes or instructions on a medium in which a program is recorded. That is, the present invention may be provided in the form of a program.

Meanwhile, the computer-readable medium includes all types of recording devices in which data readable by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. There is this.

Furthermore, the computer-readable medium may be a server or a cloud storage that includes a storage and that an electronic device can access through communication. In this case, the computer may download the program according to the present invention from a server or cloud storage through wired or wireless communication.

Furthermore, in the present invention, the computer described above is an electronic device equipped with a processor, that is, a CPU (Central Processing Unit, Central Processing Unit), and there is no particular limitation on the type thereof.

On the other hand, the above detailed description should not be construed as restrictive in all aspects, but should be considered as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention.

Claims (10)

A method for controlling an aerial weather observation system having a plurality of all-sky cameras and an observation server, the method comprising:
Receiving a GPS signal through a GPS receiver included in each of the plurality of all-sky cameras;
synchronizing the reference time of each of the plurality of omni-cameras with the GPS time information based on the GPS time information according to the absolute time reference included in the GPS signal;
receiving an all-sky image of the sky captured by each of the plurality of all-weather cameras synchronized with each other with the GPS time information and shooting date information according to the GPS time information matched to the all-season image;
selecting a plurality of all-time images having the same photographing date and time information from among the all-day images captured by the plurality of all-time cameras based on the photographing date and time information; and
Based on the separation distance between the selected plurality of all-season images and at least two different all-season cameras that have captured the selected plurality of all-season images, cloud height and amount of clouds included in the selected plurality of all-season images ) A control method of an aerial weather observation system comprising the step of calculating at least one of. delete According to claim 1,
The method of controlling an aerial weather observation system, characterized in that each of the plurality of selected all-season images is an all-season image matched with photographing date and time information defining a specific time point. 4. The method of claim 3,
receiving an illuminance value of the first sensor;
calculating a change amount per unit time of the illuminance value of the first sensor;
selecting one of the illuminance value of the first sensor and the illuminance value of the second sensor based on the change amount; and
The control method of the aerial weather observation system further comprising the step of setting the selected illuminance value as a shooting condition for taking the all-sky image. 5. The method of claim 4,
The step of selecting the illuminance value comprises:
determining whether the change amount exceeds a preset value; and
As a result of the determination, if the amount of change does not exceed a preset value, the illuminance value of the first sensor is selected,
and selecting the illuminance value of the second sensor when the change amount exceeds a preset value as a result of determination. 4. The method of claim 3,
receiving the illuminance value of the first sensor and the illuminance value of the second sensor;
calculating a difference value between the illuminance value of the first sensor and the illuminance value of the second sensor; and
selecting one of the illuminance value of the first sensor and the illuminance value of the second sensor based on the difference value; and
The control method of the aerial weather observation system further comprising the step of setting the selected illuminance value as a shooting condition for taking the all-sky image. 7. The method of claim 6,
The step of selecting the illuminance value comprises:
determining whether the difference value exceeds a preset value; and
As a result of the determination, if the difference value does not exceed a preset value, the illuminance value of the first sensor is selected,
As a result of the determination, if the difference value exceeds a preset value, selecting any one of the illuminance value of the first sensor and the illuminance value of the second sensor based on whether power is supplied to the heating unit Control method of an aerial weather observation system, characterized in that. 8. The method of claim 7,
The heating part,
It is located in one area of the lens protection unit to transfer heat to the lens protection unit,
The lens protection unit is formed to cover only the second sensor among the first and second sensors,
In the state that the difference value exceeds a preset value,
When power is supplied to the heating unit, select the illuminance value of the second sensor,
When the power is not supplied to the heating unit, the control method of the air weather observation system, characterized in that the selection of the illuminance value of the first sensor. 4. The method of claim 3,
Generate observation data including at least one of the selected plurality of all-sky images, the shooting date and time information, the calculated cloud height, and the calculated cloud amount, and transmit the observation data to the external terminal so that the observation data is output from the external terminal Control method of an aerial weather observation system, characterized in that it further comprises the step of transmitting. An aerial weather observation system having a plurality of all-sky cameras and an observation server, comprising:
The plurality of all-sky cameras,
a photographing unit for photographing an all-sky image of the sky from each of the plurality of all-sky cameras;
a GPS receiver for receiving a GPS signal including GPS time information according to an absolute time reference;
Based on the GPS time information included in the GPS signal, the reference time of each of the plurality of all-season cameras is synchronized with the GPS time information, and the GPS time information at which the all-season image is captured is added to the photographed all-season image. a control unit for matching and storing the shooting date and time information; and
and a communication unit configured to transmit an all-season image matched with the shooting date and time information to the observation server,
The observation server,
receiving an all-sky image of the sky photographed by each of the plurality of all-weather cameras synchronized with each other with the GPS time information and shooting date information according to the GPS time information matched to the all-season image,
Selecting a plurality of all-season images having the same photographing date and time information from among the all-season images captured by the plurality of all-day cameras based on the photographing date and time information matched to the all-season image,
Cloud height and amount of clouds included in the selected plurality of all-sky images and the selected plurality of all-sky images based on the separation distance between at least two different all-sky cameras that have photographed the selected plurality of all-season images Air weather observation system, characterized in that for calculating at least one of.

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