JP2020092643A - Unmanned flight device, unmanned flight system, and unmanned flight device control system - Google Patents

Abstract

To efficiently drive out harmful animals from premises.SOLUTION: A drone 1 in an unmanned flight system S includes: an image acquisition part for acquiring an image capturing the inside of a predetermined region R; an animal recognition part for recognizing an animal A in the region R based on the captured image; a retreating position specification part for specifying a retreating position P associated with the region R; and a flight control part for flying the drone 1 or another drone so as to guide the animal A toward the retreating position P. The drone 1 may be flown in accordance with an instruction received from a control server 2.SELECTED DRAWING: Figure 1

Description

The present invention relates to an unmanned aerial vehicle, an unmanned aerial vehicle system, and an unmanned aerial vehicle control system for driving away an animal that has invaded a predetermined area.

2. Description of the Related Art In recent years, in order to suppress damage to sites such as farmlands caused by harmful animals such as birds and beasts, the development of technology for driving away harmful animals using an unmanned aerial vehicle (drone) has been advanced. Patent Document 1 discloses a system in which a detection unit installed on the outer periphery of a farmland area detects a pest and a drone drives the detected pest out of the farmland area.

JP, 2008-50503, A

If a drone randomly tracks a pest, it is inefficient as it moves around the premises, which can cause additional damage. For example, if a drone enters a farmland while tracking a pest, the farmland will be destroyed.

Therefore, the present invention has been made in view of these points, and an object thereof is to provide an unmanned flight device, an unmanned flight system, and an unmanned flight device control system that can effectively drive off harmful animals from the site. ..

The unmanned aerial vehicle of the first aspect of the present invention is an unmanned aerial vehicle, wherein an image acquisition unit that acquires a captured image of an image of a predetermined area, An animal recognition unit that recognizes an animal, a retreat position specifying unit that specifies a retreat position associated with the predetermined area, and the unmanned flight device or another unmanned flight device so as to guide the animal toward the retreat position. And a flight control unit for flying.

The animal recognition unit may recognize the animal in the captured image by comparing the captured image with a feature amount stored in advance in a storage unit.

In the captured image, the animal recognition unit inputs the captured image to a machine learning model that outputs information indicating whether the animal is recognized in the captured image by inputting the captured image. May be recognized.

The unmanned aerial device, based on the relationship between the position of the unmanned aerial device, the position of the animal, and the evacuation position, at least one of a substance, electricity, sound and light that the animal avoids, or the You may further have the generation part which generate|occur|produces at least 1 of the substance which attracts an animal, electricity, a sound, and light.

The evacuation position specifying unit may specify a position at which the animal has entered the predetermined area as the evacuation position.

The retreat position identification unit identifies a position where the animal has entered the first region of the predetermined region as the retreat position, and the flight control unit is configured such that the flight control unit includes the animal in the predetermined region rather than the first region. The unmanned aerial vehicle or the other unmanned aerial vehicle may be caused to fly so as to guide the animal toward the evacuation position on condition that the vehicle has entered the second area inside.

The unmanned aerial device further has a storage unit that stores in advance a plurality of candidate positions associated with the predetermined area, the evacuation position specifying unit, based on the position of the animal, among the plurality of candidate positions. Any one of the candidate positions may be specified as the exit position.

The evacuation position specifying unit may specify, as the evacuation position, a candidate position that is closest to the position of the animal among the plurality of candidate positions.

The retreat position specifying unit, while the unmanned flight device or the other unmanned flight device is flying to guide the animal toward the retreat position, the retreat position, the position of the animal Based on the above, the position may be changed to any one of the plurality of candidate positions.

An unmanned flight system according to a second aspect of the present invention includes a first unmanned flight device and a second unmanned flight device, wherein the first unmanned flight device acquires an image of a captured image of a predetermined area. An acquisition unit, an animal recognition unit that recognizes an animal in the predetermined area based on the captured image, a retreat position specifying unit that specifies a retreat position associated with the predetermined area, and the retreat position of the animal. A transmitting unit for transmitting an instruction to fly so as to guide the vehicle toward the vehicle, the second unmanned aerial vehicle receiving unit receiving the instruction from the first unmanned aerial vehicle, and the receiving unit. A flight control unit that causes the second unmanned aerial vehicle to fly in accordance with the instruction received by.

When recognizing a plurality of the animals, the animal recognition unit of the first unmanned flight device determines any one of the plurality of animals as a target animal, and the transmission unit of the first unmanned flight device. Transmits the instruction including the position of the target animal, and the receiving unit of the second unmanned flying device receives the instruction including the position of the target animal from the first unmanned flying device, The flight control unit of the unmanned flight device flies the second unmanned flight device to guide the target animal toward the evacuation position based on the relationship between the position of the target animal and the evacuation position. Good.

The unmanned flight system includes at least two second unmanned flight devices, wherein the transmitter of the first unmanned flight device is configured to fly to the one second unmanned flight device to follow the animal. The instruction may be transmitted to the second unmanned aerial vehicle, together with the instruction, to transmit the instruction to fly to attract the animal.

An unmanned flight device control system according to a third aspect of the present invention includes an information processing device and an unmanned flight device, and the information processing device includes an image acquisition unit that acquires a captured image of a predetermined region, An animal recognition unit that recognizes an animal in the predetermined region based on the captured image, a retreat position specifying unit that identifies a retreat position associated with the predetermined region, and guides the animal toward the retreat position. A transmitting unit that transmits an instruction to fly so that the unmanned flight device receives the instruction from the information processing device; and the unmanned flying device according to the instruction received by the receiving unit. And a flight control unit for flying the flying device.

According to the present invention, there is an effect that the harmful beast can be effectively driven off from the site.

It is a schematic diagram of the unmanned flight system which concerns on 1st Embodiment. It is a block diagram of the unmanned flight system concerning a 1st embodiment. It is a figure which shows the captured image which the image acquisition part acquired. It is a schematic diagram which shows the 1st method in which a retreat position specific|specification part pinpoints a retreat position. It is a schematic diagram which shows the 2nd method in which a retreat position specific|specification part specifies a retreat position. It is a schematic diagram which shows the flight path of a drone. It is a sequence diagram of the unmanned flight device control method which concerns on 1st Embodiment. It is a block diagram of the unmanned flight system concerning the modification of a 1st embodiment. It is a schematic diagram of the method by which the drone which concerns on the modification of 1st Embodiment guides an animal toward an evacuation position. It is a block diagram of the unmanned flight system concerning a 2nd embodiment. It is a schematic diagram of the method with which the main drone and the sub drone which concern on 2nd Embodiment guide an animal toward an evacuation position. It is a sequence diagram of the unmanned flight device control method which concerns on 2nd Embodiment.

(First embodiment)
[Outline of unmanned flight system S]
FIG. 1 is a schematic diagram of an unmanned flight system S according to this embodiment. The unmanned flight system S (unmanned flight device control system) includes a drone 1, a control server 2, an imaging device 3, and a communication terminal 4. The unmanned flight system S may include a plurality of drones 1. In addition, the unmanned flight system S may include devices such as other servers and terminals.

The drone 1 is an unmanned flight device that flies in the air based on the information received from the control server 2 and drives away the animal A, which is an exclusion target, from a predetermined area R. The drone 1 normally stays at a predetermined station ST and flies when it receives a flight instruction from the control server 2.

Further, the drone 1 generates a substance, electricity, sound, light or the like that repels or attracts the animal A in flight in order to drive the animal A away from the region R. The animal A is a pest to be excluded, such as a deer, boar, monkey, or bird. The drone 1 includes a computer that controls its own flight. The drone 1 can communicate with the control server 2.

The control server 2 is a computer (information processing device) that receives a captured image captured by the image capturing device 3 and transmits a flight instruction determined based on the received captured image to the drone 1. The control server 2 also transmits to the communication terminal 4 a notification indicating that the animal A has entered the area R and that the animal A has been driven out of the area R. The control server 2 can communicate with the drone 1, the imaging device 3, and the communication terminal 4.

The imaging device 3 is a camera that images the inside of the region R. The image pickup device 3 includes an image pickup element such as a CCD (Charge Coupled Device) sensor or a CMOS (Complementary Metal Oxide Semiconductor) sensor. A plurality of imaging devices 3 are arranged at a plurality of positions along the outer periphery of the region R so that the animal A that has entered the region R can be imaged. The imaging device 3 may image a predetermined one imaging range, or may change the direction of the lens and image a plurality of imaging ranges. The captured image captured by the imaging device 3 may be a visible light image or an infrared image. The imaging device 3 transmits the captured image captured to the control server 2. The imaging device 3 can communicate with the control server 2.

The communication terminal 4 is a computer held by the user. The user may be the administrator or provider of the unmanned flight system S, or the owner of the area R. The communication terminal 4 is, for example, a personal computer, a mobile terminal such as a smartphone or a tablet terminal. The communication terminal 4 displays information indicating the notification received from the control server 2 on a display unit such as a liquid crystal display, or causes a sound generation unit such as a speaker to generate a sound indicating the notification received from the control server 2. The communication terminal 4 can communicate with the control server 2.

The drone 1 acquires its own position using GPS (Global Positioning System), a beacon, or the like, and flies so as to guide the animal A invading the area R toward a retreat position P associated with the area R. .. As will be described later, the retreat position P is a position where the animal A has entered the region R or a position closest to the animal A among a plurality of predefined candidate positions. The plurality of candidate positions are positions that are candidates for the exit position P. As a result, the drone 1 can move the animal A from the area R efficiently because it can move the animal A to the retreat position P where the animal A can easily go out instead of chasing the animal A into the dark clouds. it can.

[Configuration of unmanned flight system S]
FIG. 2 is a block diagram of the unmanned flight system S according to this embodiment. In FIG. 2, arrows indicate main data flows, and there may be data flows not shown in FIG. In FIG. 2, each block does not have a hardware (device) unit configuration but a functional unit configuration. As such, the blocks shown in FIG. 2 may be implemented within a single device or may be implemented separately within multiple devices. Data transfer between blocks may be performed via any means such as a data bus, a network, and a portable storage medium.

The drone 1 has a control unit 11, a storage unit 12, an imaging unit 13, and a generation unit 14. The controller 11 includes a receiver 111 and a flight controller 112.

The image capturing unit 13 is a camera that captures an image during the flight of the drone 1. The image pickup unit 13 includes an image pickup device such as a CCD sensor or a CMOS sensor. The captured image captured by the image capturing unit 13 may be a visible light image or an infrared image. The image capturing unit 13 inputs the captured imaged image to the control unit 11.

The generation unit 14 includes a mechanism that generates at least one of a substance, electricity, sound, and light that an animal repels or attracts an animal according to a control signal input from the control unit 11. The substances, electricity, sound, and light generated by the generation unit 14 act on the sensory nerves of the animal to be repelled by or attract the animal.

The substance is a substance that the animal repels or attracts, and is emitted toward the animal by the generation unit 14. For example, a substance that repels deer is a substance containing a pepper component, and a substance that attracts a deer is a substance containing an alfalfa component. Electricity is discharged toward the animal by the generator 14. The sound is a sound having a predetermined frequency and intensity and is output to the animal by the generation unit 14. The light is light having a predetermined frequency and intensity, and is output to the animal by the generation unit 14. For example, the electricity, sound, and light that the animal repels are electricity, sound, and light having a predetermined intensity or higher, and the electricity, sound, and light that attract the animal are perceivable by the animal and have a intensity lower than the predetermined intensity. Electricity, sound and light.

The storage unit 12 is a storage medium including a ROM (Read Only Memory), a RAM (Random Access Memory), a hard disk drive, and the like. The storage unit 12 stores a program executed by the control unit 11 in advance. The storage unit 12 may be provided outside the drone 1, and in that case, data may be exchanged with the control unit 11 via the network.

The control unit 11 is a processor such as a CPU (Central Processing Unit), and functions as the reception unit 111 and the flight control unit 112 by executing the program stored in the storage unit 12. At least a part of the function of the control unit 11 may be executed by an electric circuit. Further, at least a part of the functions of the control unit 11 may be executed by a program executed via the network.

The control server 2 has a control unit 21 and a storage unit 22. The control unit 21 includes an image acquisition unit 211, an animal recognition unit 212, an exit position identification unit 213, and a transmission unit 214. The storage unit 22 has a recognition information storage unit 221 and a candidate position storage unit 222.

The storage unit 22 is a storage medium including a ROM, a RAM, a hard disk drive and the like. The storage unit 22 stores a program executed by the control unit 21 in advance. The storage unit 22 may be provided outside the control server 2, and in that case, data may be exchanged with the control unit 21 via the network.

The recognition information storage unit 221 stores recognition information (for example, a feature amount or a machine learning model) for recognizing an animal shown in a captured image. The candidate position storage unit 222 stores a plurality of candidate positions that are candidates for the exit position P in association with the region R. The recognition information storage unit 221 and the candidate position storage unit 222 may each be a storage area on the storage unit 22, or may be a database configured on the storage unit 22.

The control unit 21 is a processor such as a CPU, for example, and functions as the image acquisition unit 211, the animal recognition unit 212, the exit position identification unit 213, and the transmission unit 214 by executing the program stored in the storage unit 22. At least a part of the function of the control unit 21 may be performed by an electric circuit. Further, at least a part of the functions of the control unit 21 may be executed by a program executed via the network.

The unmanned flight system S according to this embodiment is not limited to the specific configuration shown in FIG. The drone 1 and the control server 2 are not limited to one device, respectively, and may be configured by connecting two or more physically separated devices by wire or wirelessly.

[Explanation of unmanned flight device control method]
An unmanned flight device control method executed by the unmanned flight system S according to this embodiment will be described below. Each of the plurality of imaging devices 3 repeatedly captures a predetermined imaging range within the region R at predetermined time intervals, and transmits the images to the control server 2.

In the control server 2, the image acquisition unit 211 receives and acquires the captured image transmitted by the imaging device 3. The image acquisition unit 211 may receive and acquire a captured image captured by the imaging unit 13 of the drone 1, instead of or in addition to the captured image transmitted by the imaging device 3.

FIG. 3 is a diagram showing the captured image IM acquired by the image acquisition unit 211. The animal recognition unit 212 recognizes the exclusion target animal A in the region R based on the captured image IM acquired by the image acquisition unit 211.

For example, the animal recognition unit 212 recognizes the animal A in the captured image IM using the feature amount of the captured image IM. In this case, the recognition information storage unit 221 stores the feature amount of the animal A to be excluded as recognition information in advance. The recognition information storage unit 221 may store the feature amounts of the plurality of types of animals A to be excluded in association with the types of the animals A. The feature amount is a value representing a feature for recognizing the animal A in the captured image IM. The feature amount may be the brightness distribution of the image of the animal A (template image). Alternatively, the feature amount may be a value (SIFT feature amount, HOG feature amount, or the like) calculated from the brightness values of a plurality of pixels of the image of the animal A according to a predetermined rule.

The animal recognition unit 212 acquires the feature amount from the recognition information storage unit 221. The animal recognition unit 212 calculates the feature amount at each position in the captured image IM acquired by the image acquisition unit 211 using the same method as the feature amount stored in the recognition information storage unit 221. Then, the animal recognition unit 212 compares the feature amount acquired from the recognition information storage unit 221 with the feature amount calculated at each position in the captured image IM, and calculates the degree of similarity.

When the similarity calculated at any position in the captured image IM satisfies a predetermined condition (for example, when the similarity is equal to or more than a predetermined value), the animal recognizing unit 212 determines that the animal A at the position in the captured image IM. Recognize. The animal recognition unit 212 does not recognize the animal A in the captured image IM when the similarity calculated at any position in the captured image IM does not satisfy the predetermined condition.

When the recognition information storage unit 221 stores the feature amounts of a plurality of types of animals A, the animal recognition unit 212 repeats the recognition process for each type of animal A. When the animal recognition unit 212 recognizes one animal A in the captured image IM, the recognition process may be ended at that point, or the recognition process may be continued so that a plurality of animals A can be recognized. ..

Then, the animal recognizing unit 212 outputs the recognition result indicating whether or not the animal A is recognized in the captured image IM, in association with the position of the recognized animal A. The recognition result may include the type of the recognized animal A. The position of the animal A is, for example, the position of the imaging device 3 or the drone 1 that has captured the captured image IM.

As another method, for example, the animal recognition unit 212 recognizes the animal A in the captured image IM using a machine learning model. In this case, the recognition information storage unit 221 stores a machine learning model for recognizing the exclusion target animal A in advance as recognition information. The machine learning model inputs a captured image and outputs a recognition result indicating whether or not the animal A is recognized in the captured image IM.

The machine learning model is generated in advance by executing a known machine learning method using a captured image including the animal A and a captured image not including the animal A, and is stored in the recognition information storage unit 221. It For example, as a machine learning method, a computer calculates a specified feature amount (SIFT feature amount, HOG feature amount, etc.) in each captured image, and uses a decision tree or SVM (Support Vector Machine) that uses the calculated feature amount. By executing the learning algorithm of 1., a machine learning model capable of classifying a captured image including the animal A and a captured image not including the animal A is generated.

Alternatively, the machine learning model may be generated by deep learning. In deep learning, the computer includes a captured image containing the animal A and the animal A by repeatedly performing a convolution process for extracting the feature amount from the captured image and a pooling process for narrowing down the extracted feature amount. A machine learning model that can classify captured images that are not captured is generated.

The animal recognition unit 212 acquires a machine learning model from the recognition information storage unit 221. The animal recognition unit 212 inputs the captured image IM to the machine learning model acquired from the recognition information storage unit 221, thereby determining whether or not the animal A is recognized in the captured image IM output from the machine learning model (that is, the captured image IM. A recognition result indicating whether or not the image IM includes the animal A) is acquired.

Then, the animal recognizing unit 212 outputs the recognition result indicating whether or not the animal A is recognized in the captured image IM, in association with the position of the recognized animal A. The recognition result may include the type of the recognized animal A. The position of the animal A is, for example, the position of the imaging device 3 or the drone 1 that has captured the captured image IM.

The animal recognition unit 212 is not limited to the specific method described above, and may use another method capable of recognizing the animal A based on the captured image IM. When the animal A is recognized in the plurality of captured images IM captured by the plurality of image capturing devices 3 at the same time in the common image capturing range, the retreat position specifying unit 213 determines the retreat position specifying unit 213 based on the positions of the plurality of image capturing devices 3. Then, the position of the animal A may be calculated. For example, the evacuation position specifying unit 213 acquires the center point (center of gravity or the like) of the positions of the plurality of imaging devices 3 as the position of the animal A.

When the recognition result output by the animal recognition unit 212 indicates that the animal A has been recognized in the captured image, the exit position identification unit 213 identifies the animal A based on the position of the animal A recognized by the animal recognition unit 212. The retreat position P to be moved to is specified. The exit position P is represented by latitude and longitude, for example. The evacuation position identification unit 213 identifies the evacuation position P by the following first method or second method, for example.

FIG. 4 is a schematic diagram showing a first method for the retreat position identification unit 213 to identify the retreat position P. In the first method, the retreat position specifying unit 213 acquires the position of the animal A first recognized by the animal recognizing unit 212 as the position where the animal A has entered the region R. Then, the retreat position identification unit 213 identifies the position where the animal A has entered the region R as the retreat position P.

According to the first method, since the retreat position specifying unit 213 sets the position where the animal A originally invades the area R as the retreat position P, the place where the animal A cannot enter such as a river or a cliff, that is, the animal A A place where it is difficult to move out is not set as the move-out position P. Therefore, the drone 1 can guide the animal A to the retreat position P where the animal A can easily go out and swiftly drive it away.

FIG. 5 is a schematic diagram showing a second method in which the retreat position identifying unit 213 identifies the retreat position P. In the second method, the candidate position storage unit 222 stores in advance a plurality of candidate positions P1 that are candidates for the exit position P in association with the region R. The candidate position P1 is set, for example, in a beast road where the animal A is easy to go out, and is not set in the vicinity of a place such as an agricultural land that is not desired to be destroyed.

The exit position identification unit 213 acquires from the candidate position storage unit 222 a plurality of candidate positions P1 associated with the region R in which the captured image is captured. Then, the retreat position identification unit 213 identifies, as the retreat position P, one candidate position P1 closest to the position of the animal A first recognized by the animal recognition unit 212 among the plurality of candidate positions P1. Alternatively, the evacuation position specifying unit 213 may select the evacuation position P from the plurality of candidate positions P1 according to other conditions (the date and time when the animal A was recognized, the type of the animal A, etc.).

According to the second method, the retreat position specifying unit 213 sets any of the plurality of pre-defined candidate positions P1 as the retreat position P, so that the place where the animal A such as a river or a cliff cannot enter, that is, the animal A Does not set a location where it is difficult for the person to leave to the exit position P. Therefore, the drone 1 can guide the animal A to the retreat position P where the animal A can easily go out and swiftly drive it away. In addition, by not setting the candidate position P1 near a place that is not desired to be destroyed, such as farmland, damage that can occur when the drone 1 guides the animal A can be suppressed.

Further, in the second method, the retreat position specifying unit 213 may change the retreat position P based on the positions of the plurality of candidate positions P1 and the animal A while the drone 1 is guiding the animal A. .. In this case, for example, the animal recognition unit 212 recognizes the animal A in the captured images captured by the imaging device 3 or the imaging unit 13 of the drone 1 arranged in the region R at a predetermined time interval, so that the current state of the animal A is detected. Get the position.

Then, the retreat position identification unit 213 identifies one of the plurality of candidate positions P1 that is closest to the current position of the animal A as the retreat position P. With such a configuration, when the drone 1 moves away from the retreat position P while guiding the animal A, the retreat position specifying unit 213 changes the closer candidate position P1 to the retreat position P, The drone 1 can easily guide the animal A to the exit position P.

The transmitting unit 214 transmits to the drone 1 a flight instruction for flying so as to guide the animal A toward the retreat position P identified by the retreat position identifying unit 213. The flight instruction indicates, for example, the position of the animal A output by the animal recognition unit 212, the retreat position P identified by the retreat position identifying unit 213, and the guidance method (following the animal A or attracting the animal A). The transmission unit 214 may transmit different flight instructions to the plurality of drones 1.

In the drone 1, the receiving unit 111 receives the flight instruction transmitted by the control server 2. The flight controller 112 controls the flight of the drone 1 so as to guide the animal A toward the exit position P based on the relationship between the position of the animal A and the exit position P indicated by the flight instruction received by the receiver 111. To do.

The drone 1 guides the animal A toward the retreat position P by following the animal A or by flying so as to attract the animal A according to the guide method indicated by the flight instruction. FIG. 6A is a schematic diagram showing the flight path of the drone 1 when flying to follow the animal A. In this case, the drone 1 flies so as to approach the animal A while the animal A is between the drone 1 and the retreat position P.

FIG. 6B is a schematic diagram showing the flight path of the drone 1 when flying so as to attract the animal A. In this case, the drone 1 flies away from the animal A while the drone 1 is flying between the retreat position P and the animal A.

While the flight control unit 112 is flying the drone 1, the generating unit 14 can avoid the animal A or attract the animal A in order to guide the animal A toward the retreat position P. , At least one of a substance, electricity, sound and light.

Based on the relationship between the position of the drone 1, the position of the animal A, and the retreat position P, the generation unit 14 attracts at least one of the substance, electricity, sound, and light that the animal A repels, or the animal A. At least one of a substance, electricity, sound, or light may be generated. That is, when the animal A is between the drone 1 and the retreat position P as shown in FIG. 6A, the generating unit 14 generates a substance, electricity, sound or light that the animal A repels. When the drone 1 is flying between the retreat position P and the animal A as shown in FIG. 6B, the generating unit 14 generates a substance, electricity, sound or light that attracts the animal A. In this way, the generation unit 14 generates a substance, electricity, sound, or light that the animal A repels or attracts the animal A, so that the drone 1 can effectively dispel the animal A from the region R.

In parallel with the drone 1 guiding the animal A toward the exit position P, the transmission unit 214 of the control server 2 transmits a predetermined notification to the communication terminal 4. For example, the transmission unit 214 may transmit a notification to the communication terminal 4 when the animal recognition unit 212 recognizes the animal A in the captured image.

Further, the transmission unit 214 may transmit a notification to the communication terminal 4 when the drone 1 drives away the animal A from the area R. Further, the transmission unit 214 notifies the communication terminal 4 when the drone 1 has not driven away the animal A from the region R even after a predetermined time has elapsed since the animal recognition unit 212 recognized the animal A in the captured image. May be sent. In this case, the animal recognition unit 212 determines whether or not the animal A can be recognized in the captured images captured by the imaging device 3 or the imaging unit 13 of the drone 1 arranged in the region R at predetermined time intervals. It is determined from R whether the animal A has been driven away.

According to the notification received from the control server 2, the communication terminal 4 causes the speaker to generate a predetermined sound or displays a message on the display unit. Accordingly, the user of the communication terminal 4 can easily know that the animal A has entered the area R, that the animal A has been or has been driven away from the area R.

Further, the transmission unit 214 transmits information indicating the guidance situation of the animal A by the drone 1 (for example, the current positions of the drone 1 and the animal A) and the generation situation of the substance, electricity, sound or light by the generation unit 14 of the drone 1 (for example, generation). Information indicating the time and the remaining amount of substance and electricity may be transmitted to the communication terminal 4. The communication terminal 4 displays the information received from the control server 2 on the display unit. Thereby, the user of the communication terminal 4 can know the situation of the drone 1 at any time.

FIG. 7 is a sequence diagram of the unmanned flight device control method according to the present embodiment. In the control server 2, the image acquisition unit 211 receives and acquires the captured image transmitted by the imaging device 3 (S11). The image acquisition unit 211 may receive and acquire a captured image captured by the imaging unit 13 of the drone 1, instead of or in addition to the captured image transmitted by the imaging device 3. The animal recognition unit 212 recognizes the exclusion target animal A in the region R based on the captured image acquired by the image acquisition unit 211 (S12).

When the recognition result output by the animal recognition unit 212 indicates that the animal A has been recognized in the captured image, the exit position identification unit 213 identifies the animal A based on the position of the animal A recognized by the animal recognition unit 212. The retreat position P to be moved to is specified (S13). The transmitter 214 transmits to the drone 1 a flight instruction for flying to guide the animal A toward the retreat position P identified by the retreat position identifying unit 213 (S14).

In the drone 1, the receiving unit 111 receives the flight instruction transmitted by the control server 2. The flight controller 112 controls the flight of the drone 1 so as to guide the animal A toward the exit position P based on the relationship between the position of the animal A and the exit position P indicated by the flight instruction received by the receiver 111. Perform (S15).

While the flight control unit 112 is flying the drone 1, the generating unit 14 can avoid the animal A or attract the animal A in order to guide the animal A toward the retreat position P. , At least one of substance, electricity, sound and light is generated (S16).

[Effect of Embodiment]
According to the unmanned flight system S according to the present embodiment, the drone 1 directs the animal A toward the retreat position P where the animal A enters the region R or the retreat position P selected from the predefined candidate positions P1. The animal A easily exits from the region R in order to guide the animal. Therefore, the drone 1 can prevent the animal A from moving around in the region R, and can quickly dispel the animal A from the region R. As a result, the site can be made less likely to be damaged while the drone 1 drives away the harmful beast.

[First Modification]
In the unmanned flight system S shown in FIG. 2, the control server 2 recognizes the animal and specifies the retreat position, but even if the drone 1 recognizes the animal and specifies the retreat position and performs flight control of itself. Good. FIG. 8 is a block diagram of an unmanned flight system S according to this modification. The unmanned flight system S according to this modification differs from the unmanned flight system S shown in FIG. 2 in that the control server 2 is not included.

The control unit 11 of the drone 1 according to the present modified example functions as the image acquisition unit 211, the animal recognition unit 212, the exit position identification unit 213, the transmission unit 214, and the flight control unit 112 described above. The storage unit 12 of the drone 1 according to this modification includes the above-described recognition information storage unit 221 and candidate position storage unit 222.

According to this modification, the drone 1 recognizes the animal and specifies the exit position without communicating with the control server 2 and controls its own flight. Therefore, in an environment where it is difficult to maintain a communication environment such as in the mountains. Can also work.

[Second Modification]
When the animal A invades the site, the drone 1 drives away the animal A to the site in the method shown in FIG. 4, but the drone 1 may drive the animal A away from the site. FIG. 9 is a schematic diagram of a method in which the drone 1 according to the present modification guides the animal A toward the retreat position P. In this modification, the region R includes an outer region R1 (first region) and an inner region R2 (second region) inside the outer region R1. The inner area R2 is an area which is a condition under which the drone 1 starts a flight for driving away the animal A. The outer region R1 is a region for the drone 1 to set the retreat position P of the animal A (that is, a condition for the drone 1 to finish the flight for driving away the animal A). A plurality of imaging devices 3 are arranged at a plurality of positions along the outer circumferences of the outer region R1 and the inner region R2.

First, the animal recognition unit 212 recognizes the animal A in the captured image captured by the image capturing device 3 arranged along the outer region R1 or the image capturing unit 13 of the drone 1 flying near the outer region R1. When the animal recognition unit 212 recognizes the animal A, the retreat position specifying unit 213 specifies the position where the animal A has entered the outer region R1 as the retreat position P. At this point, the transmission unit 214 does not transmit the flight instruction to the drone 1.

Next, the animal recognition unit 212 recognizes the animal A in the captured image captured by the image capturing device 3 arranged along the inner region R2 or the image capturing unit 13 of the drone 1 flying near the inner region R2. When the animal recognition unit 212 recognizes the animal A, the transmission unit 214 gives the drone 1 a flight instruction for flying to guide the animal A toward the retreat position P identified by the retreat position identification unit 213. Send. That is, the transmission unit 214 causes the drone 1 to start flying so as to guide the animal A toward the retreat position P where the animal A has entered the outer region R1 on condition that the animal A has entered the inner region R2.

Then, in the drone 1, the receiving unit 111 receives the flight instruction transmitted by the control server 2. The flight controller 112 controls the flight of the drone 1 so as to guide the animal A toward the exit position P based on the relationship between the position of the animal A and the exit position P indicated by the flight instruction received by the receiver 111. To do.

With such a configuration, the drone 1 guides the animal A that has entered the inner region R2 until it exits from the outer region R1 outside the inner region R2. Therefore, the drone 1 can drive the animal A away from the inner region R2 and prevent the animal from entering the inner region R2 again.

(Second embodiment)
In the unmanned flight system S according to the present embodiment, the plurality of drones 1 cooperate to drive the animal A away from the area R. Below, the points different from the first embodiment will be mainly described. FIG. 10 is a block diagram of the unmanned flight system S according to this embodiment. The unmanned flight system S according to the present embodiment does not include the control server 2 as compared with the unmanned flight system S shown in FIG. 2 and is a main drone 1A that is two types of drones 1 (first unmanned flight device). And a sub drone 1B (second unmanned aerial vehicle). The unmanned flight system S may include a plurality of sub drones 1B.

The control unit 11 of the main drone 1A functions as the image acquisition unit 211, the animal recognition unit 212, the exit position identification unit 213, and the transmission unit 214 described in the first embodiment. The storage unit 12 of the main drone 1A has the recognition information storage unit 221 and the candidate position storage unit 222 described in the first embodiment. The control unit 11 of the sub drone 1B functions as the reception unit 111 and the flight control unit 112 described in the first embodiment.

FIG. 11 is a schematic diagram of a method in which the main drone 1A and the sub drone 1B according to the present embodiment guide the animal A toward the retreat position P. First, in the main drone 1A, the imaging unit 13 repeatedly captures images at predetermined time intervals while the main drone 1A is flying in the region R. The image acquisition unit 211 acquires the captured image captured by the imaging unit 13. Since the main drone 1A captures an image using the imaging unit 13 while flying, it is easy to accurately capture the position of the animal A. The image acquisition unit 211 may acquire a captured image captured by the image capturing device 3 arranged along the outer periphery of the region R.

The animal recognition unit 212 uses the method described in the first embodiment to recognize the exclusion target animal A in the region R based on the captured image acquired by the image acquisition unit 211. When a plurality of animals A are recognized in the captured image, the animal recognition unit 212 determines any one (for example, an individual closest to the main drone 1A) as the exclusion target animal A (target animal). The animal recognition unit 212 outputs a recognition result indicating whether or not the animal A is recognized in the captured image in association with the recognized position of the animal A. The position of the animal A is, for example, the position of the main drone 1A capturing the captured image.

If the recognition result output by the animal recognition unit 212 indicates that the exclusion target animal A has been recognized in the captured image, the exit position identification unit 213 uses the method described in the first embodiment, and The withdrawal position P to which the user is directed is specified.

The transmitting unit 214 transmits, to the sub drone 1B, a flight instruction for flying so as to guide the animal A toward the retreat position P identified by the retreat position identifying unit 213. That is, the transmission unit 214 is a flight control unit that controls the flight of the sub drone 1B that is another drone. The flight instruction indicates, for example, the position of the animal A output by the animal recognition unit 212, the retreat position P identified by the retreat position identifying unit 213, and the guidance method (following the animal A or attracting the animal A). The transmission unit 214 may transmit different flight instructions to the plurality of sub drones 1B. In this way, the main drone 1A recognizes the animal and specifies the exit position without communicating with the control server 2 and directly transmits the flight instruction to the sub drone 1B. Therefore, it is difficult to maintain the communication environment like in the mountains. Can also be used in.

In the sub drone 1B, the receiving unit 111 receives the flight instruction transmitted by the main drone 1A. The flight control unit 112 controls the sub drone 1B to fly so as to guide the animal A toward the evacuation position P based on the relationship between the position of the animal A and the evacuation position P indicated by the flight instruction received by the reception unit 111. I do.

The sub-drone 1B guides the animal A toward the retreat position P by following the animal A or by flying so as to attract the animal A according to the guide method indicated by the flight instruction.

While the flight control unit 112 of the sub-drone 1B is flying the sub-drone 1B, the generating unit 14 of the sub-drone 1B guides the animal A toward the retreat position P so that the animal A repels or Generates at least one of a substance, electricity, sound and light capable of attracting the animal A.

As illustrated in FIG. 11, the sub drone 1B that has received the flight instruction to follow the animal A flies so as to approach the animal A while the animal A is between the sub drone 1B and the retreat position P. The sub-drone 1B that has received the flight instruction to attract the animal A flies away from the animal A while the sub-drone 1B is flying between the retreat position P and the animal A. In this way, the plurality of sub drones 1B fly so as to sandwich the animal A, whereby the animal A can be efficiently guided toward the retreat position P.

FIG. 12 is a sequence diagram of the unmanned flight device control method according to the present embodiment. In the main drone 1A, the image acquisition unit 211 acquires the captured image captured by the imaging unit 13 (S21). The animal recognition unit 212 recognizes the exclusion target animal A in the region R based on the captured image acquired by the image acquisition unit 211 (S22).

When the recognition result output by the animal recognition unit 212 indicates that the animal A has been recognized in the captured image, the exit position identification unit 213 identifies the animal A based on the position of the animal A recognized by the animal recognition unit 212. The retreat position P to be moved to is specified (S23). The transmission unit 214 transmits, to the sub drone 1B, a flight instruction for flying to guide the animal A toward the retreat position P identified by the retreat position identification unit 213 (S24).

In the sub drone 1B, the receiving unit 111 receives the flight instruction transmitted by the main drone 1A. The flight control unit 112 controls the sub drone 1B to fly so as to guide the animal A toward the evacuation position P based on the relationship between the position of the animal A and the evacuation position P indicated by the flight instruction received by the reception unit 111. Is performed (S25).

While the flight control unit 112 of the sub-drone 1B is flying the sub-drone 1B, the generating unit 14 of the sub-drone 1B guides the animal A toward the retreat position P so that the animal A repels or At least one of a substance, electricity, sound, and light capable of attracting the animal A is generated (S26).

[Effect of Embodiment]
According to the unmanned flight system S according to the present embodiment, while the main drone 1A captures the animal A, the sub drone 1B guides the animal A to the retreat position P according to the flight instruction received from the main drone 1A. Therefore, the main drone 1A and the sub drone 1B can efficiently guide the animal A to the retreat position P.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes are possible within the scope of the gist thereof. is there. For example, the specific embodiment of the distribution/integration of the device is not limited to the above-described embodiment, and all or a part thereof may be functionally or physically distributed/integrated in arbitrary units to be configured. You can Further, a new embodiment that occurs due to an arbitrary combination of a plurality of embodiments is also included in the embodiment of the present invention. The effect of the new embodiment produced by the combination has the effect of the original embodiment.

The drone 1 and the processor of the control server 2 are the main components of the steps (processes) included in the unmanned aerial vehicle control method shown in FIGS. That is, the processors of the drone 1 and the control server 2 read a program for executing the unmanned flight device control method shown in FIGS. 7 and 12 from the storage unit and execute the program to control each unit of the unmanned flight system S. In this way, the unmanned aerial vehicle control method shown in FIGS. The steps included in the unmanned flight device control method shown in FIGS. 7 and 12 may be partially omitted, the order between the steps may be changed, and a plurality of steps may be performed in parallel.

S Unmanned Flight System 1 Drone 1A Main Drone 1B Sub Drone 11 Control Unit 111 Reception Unit 112 Flight Control Unit 14 Generation Unit 2 Control Server 21 Control Unit 211 Image Acquisition Unit 212 Animal Recognition Unit 213 Evacuation Position Specification Unit 214 Transmission Unit 22 Storage Unit 221 recognition information storage unit 222 candidate position storage unit A animal IM captured image P exit position P1 candidate position R region R1 outside region R2 inside region

Claims (13)

An unmanned aerial vehicle,
An image acquisition unit that acquires a captured image obtained by imaging the inside of a predetermined area,
An animal recognition unit that recognizes an animal in the predetermined area based on the captured image,
An evacuation position specifying unit that specifies an evacuation position associated with the predetermined area,
A flight controller for flying the unmanned aerial vehicle or other unmanned aerial vehicle so as to guide the animal toward the retreat position;
Unmanned aerial vehicle with. The unmanned flight device according to claim 1, wherein the animal recognition unit recognizes the animal in the captured image by comparing the captured image with a characteristic amount stored in advance in a storage unit. In the captured image, the animal recognition unit inputs the captured image to a machine learning model that outputs information indicating whether the animal is recognized in the captured image by inputting the captured image. The unmanned aerial vehicle of claim 1, wherein the unmanned aerial vehicle recognizes the animal. Based on the relationship between the position of the unmanned aerial vehicle, the position of the animal, and the evacuation position, at least one of a substance repelled by the animal, electricity, sound and light, or a substance that attracts the animal, The unmanned flight device according to any one of claims 1 to 3, further comprising a generator that generates at least one of electricity, sound, and light. The unmanned flight device according to any one of claims 1 to 4, wherein the retreat position identification unit identifies a position at which the animal has entered the predetermined area as the retreat position. The retreat position specifying unit specifies a position where the animal has entered the first region of the predetermined region as the retreat position,
The flight control unit is configured to guide the animal toward the retreat position on the condition that the animal has invaded a second area inside the first area of the predetermined area. Alternatively, the unmanned aerial vehicle according to claim 5, which causes the other unmanned aerial vehicle to fly. A storage unit that stores in advance a plurality of candidate positions associated with the predetermined area,
The unmanned person according to any one of claims 1 to 5, wherein the exit position identification unit identifies any one of the plurality of candidate positions as the exit position based on the position of the animal. Flight equipment. The unmanned flight device according to claim 7, wherein the retreat position identification unit identifies a candidate position closest to the position of the animal among the plurality of candidate positions as the retreat position. The retreat position specifying unit, while the unmanned flight device or the other unmanned flight device is flying to guide the animal toward the retreat position, the retreat position, the position of the animal The unmanned aerial vehicle according to claim 7 or 8, which changes to any one of the plurality of candidate positions based on the plurality of candidate positions. A first unmanned aerial vehicle and a second unmanned aerial vehicle,
The first unmanned aerial vehicle is
An image acquisition unit that acquires a captured image obtained by imaging the inside of a predetermined area,
An animal recognition unit that recognizes an animal in the predetermined area based on the captured image,
An evacuation position specifying unit that specifies an evacuation position associated with the predetermined area,
A transmitting unit for transmitting an instruction to fly the animal so as to guide the animal toward the evacuation position;
Have
The second unmanned aerial vehicle is
A receiver for receiving the instruction from the first unmanned aerial vehicle,
A flight control unit for flying the second unmanned aerial vehicle according to the instruction received by the receiving unit;
Having an unmanned flight system. The animal recognition unit of the first unmanned flying device, when recognizing a plurality of the animals, determines any one of the plurality of animals as a target animal,
The transmitter of the first unmanned aerial vehicle transmits the instruction including the position of the target animal,
The receiving unit of the second unmanned aerial vehicle receives the instruction including the position of the target animal from the first unmanned aerial vehicle,
The flight control unit of the second unmanned aerial vehicle controls the second unmanned aerial vehicle so as to guide the target animal toward the evacuation position based on the relationship between the position of the target animal and the evacuation position. The unmanned flight system of claim 10, which is caused to fly. Including at least two of the second unmanned aerial vehicles,
The transmitter of the first unmanned aerial vehicle transmits the instruction to fly to follow the animal to one of the second unmanned aerial vehicles, and the second unmanned aerial vehicle to the second unmanned aerial vehicle. 12. An unmanned flight system according to claim 10 or 11, which transmits the instructions for flying to attract animals. Including an information processing device and an unmanned flight device,
The information processing device,
An image acquisition unit that acquires a captured image obtained by imaging the inside of a predetermined area,
An animal recognition unit that recognizes an animal in the predetermined area based on the captured image,
An evacuation position specifying unit that specifies an evacuation position associated with the predetermined area,
A transmitting unit for transmitting an instruction to fly the animal so as to guide the animal toward the evacuation position;
Have
The unmanned aerial vehicle is
A receiver for receiving the instruction from the information processing device,
A flight controller for flying the unmanned aerial vehicle according to the instruction received by the receiver;
An unmanned aerial vehicle control system.

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