KR102671199B1 - Bird Collision Prevention System - Google Patents

Abstract

A bird collision prevention system for protecting birds from a support and a rotating body supported on the support and rotating is at least one rotatably installed on the support, a plurality of cameras capable of filming the aircraft approaching the rotating body, and a support. An audio output unit is rotatably installed to output repelling sounds, including natural enemy sounds, toward the aircraft, and stores bird images to distinguish whether the aircraft is a bird. Based on the images received from multiple cameras, it stores the bird image and determines whether it is a bird or not. It determines the type of bird and, if it is determined to be a specific bird, includes a control unit that controls the voice output unit so that a repelling sound is output toward the specific bird so that it leaves the area of the support body and the rotation area of the rotating body.

Description

Bird Collision Prevention System

The present invention relates to a bird collision prevention system, and more specifically, to a bird collision prevention system that can prevent birds from colliding with the support and rotor of a wind power generator during flight.

Recently, wind power generators have been increasing as an alternative energy source. These wind power generators are installed in areas where there is a lot of wind, and the number of birds, such as migratory birds, colliding with the support and rotor of wind power generators while following food or flying for various purposes is increasing. In some cases, the rotating body of a wind power generator may collide directly without realizing that it is rotating, and as the rotating body rotates, a vortex is generated, and the number of cases where the current collides with the support body due to the vortex is increasing.

However, due to the lack of measures to prevent bird collisions while installing wind power generators, bird damage is becoming more serious.
(Prior art literature)
Registered Patent No. 10-2003610 Moving object extermination device with variable sound wave and light generation structure

Therefore, the purpose of the present invention is to provide a bird collision prevention system for protecting birds from a support and a rotating body supported by the support.

A bird collision prevention system for protecting birds from a support and a rotating body supported on the support according to the present invention to achieve the above object, at least one of which is rotatably installed on the support, and is accessible to the rotating body. A plurality of cameras capable of photographing the aircraft; an audio output unit rotatably installed on the support to output a repelling sound including a natural enemy sound toward the aircraft; And storing a bird image to distinguish whether the aircraft is a bird, determining whether the aircraft is a bird and the type of bird based on the captured images received from the plurality of cameras, and if it is determined to be a specific bird, fight the bird toward the specific bird. It includes a control unit that controls the sound output unit so that sound is output and leaves the area of the support body and the rotation area of the rotating body. The surroundings of the support and the rotating body are monitored with multiple cameras, and when the aircraft is detected to be moving towards the support and rotating body, it is determined whether the flying object is a bird. If it is a bird, the type of bird is identified, and the identified specific bird is targeted and repelled. By outputting a sound, it is possible to prevent a collision by causing a specific bird to move and fly beyond the area of the support body and the rotation area of the rotating body.

Here, it is preferable to further include a camera rotation drive unit that rotates at least one of the plurality of cameras with respect to the support, so that images can be captured by tracking a moving aircraft or a specific bird.

And when the audio output unit is installed to be rotated and driven together with at least one of the plurality of cameras by the camera rotation drive unit, if it is determined to be a specific bird, it tracks the flying object and the specific bird while filming and quickly transmits the repelling sound to the specific bird. Since it can be printed, it is desirable because it can reduce bird collision damage.

Here, the audio output unit is provided in plurality, and further includes an audio output rotation drive unit that rotates at least one of the plurality of audio output units with respect to the support, so that the repelling sound is accurately converted to a specific bird while tracking the flying object and a specific bird. Since it can be printed, it is desirable because it can reduce damage from birds colliding with the support and rotating body.

In addition, the control unit controls the audio output rotation drive unit so that the audio output unit is rotated according to the specific moving bird so that the audio output unit can be directed to the specific bird, so that the repelling sound can be accurately output to the specific bird, which is preferable.

Here, if the plurality of audio output units include a directional audio output unit and a non-directional audio output unit, it is preferable to output repelling sounds in various ways so that a specific bird can move and fly away from the area of the support and the rotation area of the rotating body. .

In addition, the control unit increases the size of the repelling sound significantly as the specific birds approach the support and the rotating body, so that the specific birds can escape from the area of the support and the rotating area of the rotating body.

Here, it further includes a mobile aircraft equipped with a mobile camera capable of photographing the aircraft, and the control unit approaches the aircraft when it is difficult to determine whether it is a bird based on the captured images received from the plurality of cameras. If the mobile aircraft and the mobile camera are controlled to take pictures, it is preferable to accurately determine whether the moving aircraft is a bird or a specific bird.

And the mobile aircraft is further equipped with a mobile voice output unit that outputs a repelling sound including a natural enemy sound toward the specific bird, and the control unit is configured to cause the specific bird to be activated by the repelling sound output from the audio output unit. When the specific bird does not leave the area of the support and the rotation area of the rotating body, the specific bird can move to a path that leaves the area of the support and the rotating area of the rotating body, while outputting the repelling sound to approach the specific bird. By controlling the mobile aircraft and the mobile sound output unit, the mobile aircraft can approach specific birds and output a repelling sound, and can easily induce specific birds to escape from the area of the support and the rotation area of the rotating body, which is preferable.

Here, the control unit greatly increases the size of the repelling sound as the mobile aircraft approaches the specific bird, and outputs the repelling sound in various ways as the mobile aircraft approaches the specific bird, so that the specific bird moves to the area and circle of the support. It is desirable to be able to move and fly outside of the overall rotation area.

According to the present invention, the surroundings of the support and the rotating body are monitored with a plurality of cameras, and when it is determined that the flying body is moving to the supporting and rotating body, it is determined whether the flying body is a bird, and if it is a bird, the type of bird is determined, and the identified specific By outputting a repelling sound toward the birds, it is possible to prevent collisions by causing certain birds to move and fly beyond the area of the support and the rotation area of the rotor, which has the effect of protecting the birds.

1 is an exemplary diagram of a bird collision prevention system according to the present invention.
Figure 2 is a plan view in which the direction of bird movement is changed to left and right by the bird collision prevention system.
Figure 3 is a side view showing the bird movement direction being changed up and down by the bird collision prevention system.
Figure 4 is a left and right rotation operation diagram of the camera and audio output unit.
Figure 5 is a diagram showing the vertical rotation operation of the camera and audio output unit.
Figure 6 is an example diagram of a directional and non-directional audio output unit.
Figure 7 is an example of volume control according to the distance of a specific bird.
Figure 8 is an example diagram of a mobile aircraft.
Figure 9 is an example of photographing a specific bird and outputting a repelling sound from a mobile aircraft.
Figure 10 is a control block diagram.
Figure 11 is an example diagram showing the outline of a bird.
Figure 12 is an example diagram showing the outline of a drone.
Figure 13 is an example diagram comparing the bending points among the outline lines of a bird and a drone.
Figure 14 is an example diagram comparing the outline lines of birds and drones.
Figure 15 is an example diagram showing temporal changes in the shape of birds and airplanes.

Hereinafter, the bird collision prevention system 1 according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

Figure 1 is an illustration of a bird collision prevention system (1) according to the present invention, Figure 2 is a plan view in which the direction of bird movement is changed to the left and right by the bird collision prevention system (1), and Figure 3 is a bird collision prevention system (1). It is an example side view of the bird movement direction being changed up and down by the system 1, Figure 4 is a left and right rotation operation diagram of the camera 10 and the audio output unit 20, and Figure 5 is a diagram showing the camera 10 and the audio output. Figure 6 is a diagram showing the vertical rotation operation of the unit 20, Figure 6 is an example of the directional and non-directional audio output units 21 and 22, Figure 7 is an example of volume control according to the distance of a specific bird, and Figure 8 is a movement diagram. This is an exemplary diagram of the flying vehicle 60. FIG. 9 is an exemplary diagram of photographing a specific bird and outputting a repelling sound from the mobile air vehicle 60, and FIG. 10 is a control block diagram.

The bird collision prevention system (1) consists of a support body (2), which is a wind turbine, and a rotating body (3) supported and rotated by the support body (2). Birds (4) approaching are connected to the support body (2) and the rotating body (3). It is an invention that aims to protect people from crashing and dying.

The bird collision prevention system (1) includes a camera (10), an audio output unit (20), a camera rotation unit (30), an audio output rotation unit (40), an optical output unit (50), a mobile aircraft (60), and a communication unit ( 70), a display unit 72, a user input unit 74, and a control unit 80.

A plurality of cameras 10 are provided, and at least one is rotatably installed on the support body 2 and can capture an aircraft approaching the rotating body 3. The camera 10 may include a first camera (not shown), a second camera (not shown), a third camera (not shown), and a support pillar 14. The number of cameras 10 is not limited, and the number may be increased as needed.

The first camera (not shown), the second camera (not shown), and the third camera (not shown) are supported on the support 2 and can be installed at different positions, and at least one is rotatable on the support 2. Can be installed. The first camera (not shown), the second camera (not shown), and the third camera (not shown) may be installed in different positions depending on the height of the support 2 and may be installed in positions in different directions. there is. This can make it easy to detect birds 4 approaching from the up, down, left, and right directions of the support body 2 and the rotating body 3.

The support pillar 14 is rotatably installed while being supported by the support body 2, and can rotatably support the camera 10. Accordingly, the camera 10 can rotate with respect to the support body 2. The support pillar 14 may rotatably support the audio output unit 20. In addition, when the support pillar 14 rotates with respect to the support body 2, the camera 10 and the audio output unit 20 may be supported so that they can rotate simultaneously.

The sound output unit 20 is rotatably installed with respect to the support 2 and can output a repelling sound including a natural enemy sound toward the flying vehicle. The audio output unit 20 may be provided in plural and may be comprised of a directional audio output unit 21 and a non-directional audio output unit 22. A plurality of audio output units 20 may be provided, and may be installed on the support pillar 14 together with the camera 10 and rotated simultaneously. The voice output unit 20 can output the voice loudly or at a low volume, and can periodically adjust the intensity to output the voice. The audio output unit 20 may be installed to be rotationally driven together with at least one of the plurality of cameras 10 by the camera rotation driving unit 30.

The directional sound output unit 21 may be a concentrated directional speaker capable of outputting repellent sound intensively in a narrow range of areas at a distance.

The non-directional audio output unit 22 can output audio while spreading through a general speaker.

The camera rotation driving unit 30 can drive at least one of the plurality of cameras 10 to rotate with respect to the support body 2. The camera rotation drive unit 30 may rotate the support pillar 14 horizontally or the camera 10 may rotate vertically with respect to the support pillar 14. The camera rotation drive unit 30 may include a camera connection shaft 31 and a camera rotation motor 32 connected to the support pillar 14. The camera connection shaft 31 is connected at the top and bottom or left and right of the support pillar 14 and may also be connected to the camera 10. As a result, the support pillar 14 can rotate horizontally with respect to the support body 2, and the camera 10 can rotate vertically in the vertical direction with respect to the support pillar 14.

The audio output rotation driving unit 40 can rotate at least one of the plurality of audio output units 20 with respect to the support body 2. The audio output rotation drive unit 40 may be rotatably connected to the support pillar 14 while being connected to the audio output unit 20. The audio output rotation drive unit 40 may be configured to rotate the support pillar 14 horizontally or to rotate the audio output unit 20 vertically with respect to the support pillar 14. If the camera 10 and the audio output unit 20 are installed on the same support pillar 14, they can quickly and accurately output audio toward a specific bird 4.

Like the audio output unit 20, the light output unit 50 can output light toward the bird 4 so that it escapes the area of the support body 2 and the rotation area of the rotating body 3. The optical output unit 50 is provided to adjust the intensity of light and output it.

The mobile aircraft 60 may be prepared as a drone, and includes a mobile camera 61, a mobile audio output unit 62, a mobile communication unit 63, wings 64, a mobile drive motor 65, and a mobile control unit 66. and a mobile body 67.

The mobile camera 61 is supported on the mobile body 67, which will be described later, and can take pictures of the flying object.

The mobile sound output unit 62 can output a repelling sound including a natural enemy sound toward a specific bird 4.

The mobile camera 61 and the mobile audio output unit 62 may be configured to play the same role as the camera 10 and the audio output unit.

The mobile communication unit 63 can transmit and receive data with an external device. The mobile communication unit 63 can transmit images captured by the mobile camera 61 to the control unit 80, which will be described later, and can receive a control signal from the control unit 80.

The wings 64 can be rotated by a mobile drive motor 65, which will be described later, so that the mobile aircraft 60 can fly.

The movement control unit 66 can control the flight of the mobile aircraft 60, control the mobile camera 61 to photograph a specific bird 4, and shoot a natural enemy toward the specific bird 4. It can be controlled to output a repelling sound including.

The mobile body 67 can support the above components at the center of the mobile aircraft 60.

The communication unit 70 can transmit and receive data with an external device.

The display unit 72 can display images received from the camera 10 and the mobile camera 61.

The user input unit 74 may be composed of a mouse, keyboard, touch panel, motion recognition, voice recognition, etc. through which user commands can be input.

The control unit 80 stores a bird image to distinguish whether the aircraft is a bird, and determines whether it is a bird and the type of bird based on the captured images received from the plurality of cameras 10. If it is determined to be a specific bird 4, the control unit 80 stores the bird image to determine whether the aircraft is a bird. The voice output unit 20 can be controlled so that a repelling sound is output toward a specific bird 4 so that it escapes the area of the support body 2 and the rotation area of the rotating body 3.

The control unit 80 can control the voice output rotation drive unit 40 to rotate along the moving specific bird 4 so that the voice output unit 20 can be directed to the specific bird 4.

The control unit 80 can greatly increase the size of the repelling sound as the specific bird 4 approaches the support body 2 and the rotating body 3.

When it is difficult to determine whether a bird is present based on the captured images received from the plurality of cameras 10, the control unit 80 may control the mobile aircraft 60 and the mobile camera 61 to approach the aircraft and take pictures.

If the specific bird 4 does not leave the area of the support 2 and the rotation area of the rotating body 3 according to the repelling sound output from the voice output unit 20, the control unit 80 controls the specific bird 4 to fly to the support. Control the mobile aircraft 60 and the mobile voice output unit 62 to approach a specific bird (4) while outputting a repelling sound so that it can move to a movement path outside the area of (2) and the rotation area of the rotating body (3). can do.

The control unit 80 can greatly increase the size of the repelling sound as the mobile aircraft 60 approaches a specific bird 4.

Figure 2 is a plan view in which the direction of bird movement is changed to left and right by the bird collision prevention system 1.

Figure 2 (a) The support body (2) and the rotating body (3) are arranged, the bird collision prevention system (1) is supported and installed on the support body (2), and the flying vehicle (bird, 4) is connected to the support body (2). It is moving toward the rotating body (3).

Figure 2 (b) The bird collision prevention system 1 determines that the flying vehicle (bird, 4) is a bird, and controls the voice output unit 20 to output a voice toward the flying vehicle (bird, 4). ) is shown to move beyond the left side of the area (A) of the rotating body (3).

Figure 3 is an exemplary side view in which the direction of bird movement is changed up and down by the bird collision prevention system 1.

Figure 3 (a) The support body (2) and the rotating body (3) are arranged, the bird collision prevention system (1) is supported and installed on the support body (2), and the flying vehicle (bird, 4) is connected to the support body (2). It is moving toward the rotating body (3).

Figure 3 (b) The bird collision prevention system 1 determines that the flying vehicle (bird, 4) is a bird, and controls the voice output unit 20 to output a voice toward the flying vehicle (bird, 4). ) is shown to move beyond the upper area (A) of the rotating body (3).

Figure 4 is a left and right rotation operation diagram of the camera 10 and the audio output unit 20.

Figure 4 (a) The camera 10 is rotatably connected to the left side of the support pillar 14 by the camera connection shaft 31, and the audio output unit 20 is connected to the right side of the support pillar 14 to output audio. It is rotatably connected by a secondary connection shaft (41). In addition, the support pillar 14 is installed on the support body 2 so that it can rotate horizontally.

Figure 4 (b) shows that the support pillar 14 rotates counterclockwise by driving the camera rotation motor 32.

Figure 5 is a diagram showing the vertical rotation operation of the camera 10 and the audio output unit 20.

Figure 5 (a) The camera 10 is rotatably connected to the left side of the support pillar 14 by the camera connection shaft 31, and the audio output unit 20 is connected to the right side of the support pillar 14 to output audio. It is rotatably connected by a secondary connection shaft (41). In addition, the support pillar 14 is installed on the support body 2 so that it can rotate horizontally.

Figure 5 (b) shows that the camera 1 and the audio output unit 20 rotate clockwise by driving the camera rotation motor 32 and the audio output rotation motor 42.

Here, the camera 1 and the audio output unit 20 may be arranged to be rotated simultaneously by either the camera rotation motor 32 or the audio output rotation motor 42.

Figure 6 is an example diagram of directional and non-directional audio output units 21 and 22.

Figure 6 (a) The directional sound output unit 21 is provided as a concentrated directional speaker and can output the sound of repelling intensively in a narrow area at a distance.

Figure 6 (b) The non-directional voice output unit 22 is provided as a general speaker and can output voice while spreading rather than focusing.

Figure 7 is an example of volume control according to the distance of a specific bird (4).

Figure 7 (a) When a specific bird (4) is found and is at a long distance from the support body (2) and the rotating body (3), a small sound (50 db) can be output as a repelling sound. Here, the directional sound output unit 21 ) can be used to output audio.

Figure 7 (b) When a specific bird (4) approaches the support (2) and the rotating body (3) than Figure 7 (a), a repelling sound (100 db) louder than Figure 7 (a) is output. Here, audio can be output using the non-directional audio output unit 22. Alternatively, a repelling sound can be output toward a specific bird (4) using both the directional audio output unit 21 and the non-directional audio output unit 22.

Figure 9 is an example of photographing a specific bird and outputting a repelling sound from the mobile aircraft 60.

If it is difficult to determine whether a bird is a bird based on the captured images received from a plurality of cameras 10, the mobile aircraft 60 can be moved and photographed so that it can be determined whether the aircraft is a bird 4 or not. If the aircraft is determined to be a specific bird (4), the audio output unit 40 and the mobile audio output unit 62 output a repelling sound toward the specific bird (4). Here, the mobile aircraft 60 may further include a moving tube output unit, and can output a sparkling light along with a sound to make it escape from the area of the support body 2 and the area of the rotating body 3.

Figure 11 is an example diagram showing the outline of a bird.

First, in order to detect birds using images captured by the camera 10, it is necessary to exclude objects other than birds from objects flying in the sky. Generally, there are birds, drones, and airplanes, so if you look at the differences between birds and drones and the differences between birds and airplanes, you will be able to identify only birds among birds, drones, and airplanes. Detecting moving objects can use common background/foreground separation algorithms.

Figure 11 (a) It can be seen that the bird's external appearance is mainly formed in the shape of a head, wings, and tail.

In Figure 11 (b), it can be seen that the silhouette of the bird's appearance is relatively simple.

Figure 12 is an example diagram showing the outline of a drone.

Figure 12 (a) Compared to birds, drones can be seen to have a significantly more complex structure.

Figure 12 (b) The silhouette of the drone has a complex appearance, and many thin, branch-shaped bars are observed, confirming the complex appearance.

Figure 13 is an example diagram comparing the bending points among the outline lines of a bird and a drone.

In the silhouettes in Figure 13 (a) and Figure 11 (b), the bending points where the outline is bent more than 90 degrees can be compared, and the bird has 9 bending points.

In the silhouette in Figure 13 (b) and Figure 12 (b), it is confirmed that there are 20 bending points where the outline is bent more than 90 degrees, which is more than twice as many as that of birds.

Figure 14 is an example diagram comparing the outline lines of birds and drones.

Figure 14 (a) The bird's outline connects the body and wings with almost no thin parts, and the ratio of the outline length to the object area is small.

Figure 14 (b) The outline of the drone connects the body and wings, and has many thin parts, that is, wings and wing supports, and the ratio of the outline length to the object area is significantly larger than that of birds.

Figure 15 is an example diagram showing temporal changes in the shape of birds and airplanes.

Due to the nature of the camera 10, the distance to the object cannot be determined, so it is not possible to distinguish between a large distant object (airplane) and a nearby small object (bird) by size. And since the outline shape is similar, it is actually difficult to distinguish them by outline characteristics like drones. However, the two can be distinguished by using the difference that an airplane is a hard solid object and a bird is an organism with flexible joints.

In order to observe a bird's flapping wings, it is necessary to observe the temporal shape change of the object in successive frames, which can be easily implemented using template matching. While airplanes move continuously in one direction, birds can change direction at any time. Using this, you can distinguish between birds and airplanes.

Figure 15 (a) If the change in direction of movement is large over time, it can be judged to be a tidal current. Additionally, if the shape of an object changes more than a certain amount (threshold) within a few seconds, it can be judged to be a bird.

Figure 15 (b) Thresholds are set for changes in shape and direction of movement over time, and if they exceed these limits, they can be judged as birds or airplanes.

The bird collision prevention system (1) for protecting birds (4) from the support (2) and the rotating body (3) supported and rotated by the support (2) includes the support (2) with a plurality of cameras (10). When monitoring the surroundings of the rotating body (3) and detecting that the flying body is moving to the support body (2) and the rotating body (3), it is determined whether the flying body is a bird, and if it is a bird (4), the type of bird is determined, By outputting a repelling sound toward the identified specific bird (4), the specific bird (4) can move and fly beyond the area of the support body (2) and the rotation area of the rotating body (3), thereby preventing a collision.

1: Bird collision prevention system 2: Support body
3: Rotating body 4: Algae
10: Camera 11: First camera
12: Second camera 13: Third camera
14: Support pillar
20: audio output unit 21: directional audio output unit
22: Non-directional audio output unit
30: Camera rotation drive part 31: Camera connection axis
32: Camera rotation motor
40: Voice output rotation drive unit 41: Voice output unit connection shaft
42: Voice output rotation motor
50: Optical output unit
60: Mobile aircraft 61: Mobile camera
62: mobile voice output unit 63: mobile communication unit
64: Wing 65: Movement drive motor
66: movement control unit 67: movement body
70: Communication unit 72: Display unit
74: User input unit
80: control unit

Claims (10)

In the bird collision prevention system for protecting birds from a support and a rotating body supported by the support,
A plurality of cameras, at least one of which is rotatably installed on the support, capable of photographing an aircraft approaching the rotating body;
an audio output unit rotatably installed on the support to output a repelling sound including a natural enemy sound toward the aircraft; and
Stores a bird image to distinguish whether the aircraft is a bird, determines whether it is a bird and the type of bird based on the captured images received from the plurality of cameras, and if it is determined to be a specific bird, makes the repelling sound toward the specific bird. It includes a control unit that controls the audio output unit so that the sound is output and leaves the area of the support and the rotation area of the rotating body,
The control unit,
Compare the bending point among the outline lines of the bird and the drone and the ratio of the length of the outline to the object area of the bird and the drone to determine which of the birds and the drone is the flying object,
A bird collision prevention system that sets thresholds for changes in shape and direction of movement over time and determines that an object is a bird when its shape changes more than the threshold.
According to claim 1,
A bird collision prevention system further comprising a camera rotation driving unit that rotates at least one of the plurality of cameras with respect to the support.
According to clause 2,
A bird collision prevention system wherein the audio output unit is installed to rotate with at least one of the plurality of cameras by the camera rotation driving unit.
According to claim 1,
The bird collision prevention system includes a plurality of audio output units, and further includes an audio output rotation drive unit that rotates at least one of the plurality of audio output units with respect to the support.
According to clause 4,
The control unit,
A bird collision prevention system that controls the voice output rotation drive unit so that the voice output unit rotates along the specific moving bird so that the voice output unit faces the specific bird.
According to claim 1,
A bird collision prevention system wherein the plurality of audio output units includes a directional audio output unit and a non-directional audio output unit.
According to claim 1,
The control unit,
A bird collision prevention system that significantly increases the size of the repelling sound as the specific bird approaches the support and the rotating body.
According to claim 1,
It further includes a mobile aircraft equipped with a mobile camera capable of photographing the aircraft,
The control unit,
A bird collision prevention system that controls the mobile aircraft and the mobile camera to approach the aircraft and take pictures when it is difficult to determine whether there are birds based on the captured images received from the plurality of cameras.
According to clause 8,
The mobile aircraft is further equipped with a mobile sound output unit that outputs a repelling sound including a natural enemy sound toward the specific bird,
The control unit,
When the specific bird does not leave the area of the support and the rotation area of the rotating body by the repelling sound output from the voice output unit, the movement path by which the specific bird leaves the area of the support and the rotating area of the rotating body A bird collision prevention system that controls the mobile aircraft and the mobile voice output unit to approach the specific bird while outputting the repelling sound so that it can move to.
According to clause 9,
The control unit,
A bird collision prevention system that significantly increases the size of the repelling sound as the mobile aircraft approaches the specific bird.