KR20220144938A - System and method for mapping mating calls of animals using aerial sound capturing device and computer program for the same - Google Patents

Abstract

The present invention relates to a system for mapping a biological breeding sound. The system for mapping a biological breeding sound comprises: an aerial sound collecting device including a sound collecting device for recording a breeding sound of a target organism and a location detecting unit and capable of flying over a target area in which the target organism is distributed; and a controlling device receiving sound information recorded by the sound collecting device and location information of the aerial sound collecting device measured by the location detecting unit from the aerial sound collecting device and generating a breeding sound map by mapping the breeding sound of the target organism included in the sound information with the location information. According to the system for mapping a biological breeding sound, it is possible to objectify a result of natural ecology survey and turn the same into spatial information by mapping a range of action and habitat of the target organism, such as anurans, wherein there is no choice but to rely on sound to confirm presence or absence of living organisms. Accordingly, the biological breeding sound mapping system can be used for conservation biological design, such as urban development for biological habitat conservation and ecological restoration.

Description

SYSTEM AND METHOD FOR MAPPING MATING CALLS OF ANIMALS USING AERIAL SOUND CAPTURING DEVICE AND COMPUTER PROGRAM FOR THE SAME

The embodiments relate to a biological breeding sound mapping system and method and a computer program therefor. More specifically, the embodiments detect mating calls of a target organism, such as amphibians, using an aerial acoustic capture device such as a drone, and map the detected breeding sound with location information to obtain the results of a natural ecology survey. It is about spatial information technology.

As awareness of biodiversity conservation increases, various legal and institutional arrangements are being prepared for the conservation of habitats such as endangered species. In order to protect the habitats of endangered species, it is necessary to search for the habitats of the species in advance. range can be selected.

On the other hand, tasteless amphibians such as frogfish and golden frogs frequently appear in state-led development activities such as residential land, industrial complexes, and roads. Accordingly, in the case of amphibians, the habitat of the individual is mainly checked through mating calls during the breeding season, but there is a limitation in that the space where the breeding activity takes place cannot be specified even if the presence or absence of the habitat is confirmed by the sound.

Due to this limitation, in the case of organisms that rely on sound to check whether or not the living organism is inhabited by sound, such as amphibians, it is difficult to select the approximate location of the area where the breeding sound is generated even if the habitat survey is conducted by a related expert. It is possible, but there is no way to spatially specify the exact habitat.

Laid-open Patent Publication No. 10-2018-0085099

According to an aspect of the present invention for solving the problems of the prior art, by measuring and mapping the mating calls of a target organism such as a microamphibious using an aerial sound capture device such as a drone, the target It is possible to provide a biological breeding sound mapping system and method capable of spatially specifying a habitat of an organism, and a computer program for the same.

A biological breeding sound mapping system according to an aspect of the present invention includes a sound collecting device and a location detection unit for recording breeding sounds of a target organism, and aerial sound collection capable of flying over a target area in which the target organism is distributed Device; and receiving the sound information recorded by the sound collecting device and the location information of the aerial sound collecting device measured by the location detection unit from the aerial sound collecting device, and the reproduction sound of the target organism included in the sound information and a control device configured to generate a breed tone map by mapping the .

In one embodiment, the aerial sound harvesting device includes a driving unit configured to raise or lower the sound collecting device.

In an embodiment, the control device is further configured to extract, from the sound information, a breeding sound of the target organism by detecting an acoustic signal defined by a combination of a preset repetition period and a preset frequency range.

In an embodiment, the control device is further configured to generate the breeding sound map by synchronizing the intensity of the breeding sound of the target organism with the location information based on time information.

The biological breeding sound mapping system according to an embodiment further includes a control device configured to transmit route information of a target area in which the target organism is distributed to the aerial acoustic sampling device by communicating with the aerial acoustic sampling device.

A control device for biological reproduction sound mapping according to an aspect of the present invention includes a first device configured to receive sound information recorded by the aerial acoustic sampling device from an aerial acoustic sampling device capable of flying over a target area in which a target organism is distributed. 1 receiver; a second receiver configured to receive location information of the aerial acoustic sampling device from the aerial acoustic sampling device; a sound processing unit configured to extract a breeding sound of the target organism included in the sound information; and a map generator configured to generate a breeding sound map by mapping the breeding sounds of the target organism with the location information.

In an embodiment, the sound processing unit may include: a noise removing unit configured to remove a preset noise signal from the sound information; and a detector configured to extract the breeding sound of the target organism by detecting an acoustic signal defined by a combination of a preset repetition period and a preset frequency range from the acoustic information from which the noise signal is removed.

In an embodiment, the map generator is further configured to generate the breeding sound map in the form of a heatmap in which the intensity of the breeding sound of the target organism is synchronized with the location information based on time information.

In an embodiment, the map generator is further configured to generate the heat map by linearly interpolating the intensity of the propagation sound projected to each position on a two-dimensional plane corresponding to the target area.

A biological breeding sound mapping method according to an aspect of the present invention comprises: receiving, by a control device, acoustic information recorded by the aerial acoustic sampling device from an aerial acoustic sampling device flying over a target area in which a target organism is distributed ; receiving, by the control device, location information of the aerial acoustic sampling device from the aerial acoustic sampling device; extracting, by the control device, a breeding sound of the target organism from the sound information; and generating, by the control device, a breeding sound map by mapping the breeding sounds of the target organism with the location information.

In an embodiment, the extracting of the breeding sound of the target organism includes, by the control device, detecting an acoustic signal defined by a combination of a preset repetition period and a preset frequency range from the acoustic information. .

In an embodiment, the generating of the breeding sound map includes generating, by the control device, a heat map in which the intensity of the breeding sound of the target organism is synchronized with the location information based on time information.

The computer program according to an embodiment is for executing the biological reproduction sound mapping method according to the above-described embodiments in combination with hardware, and may be stored in a computer-readable recording medium.

According to the biological breeding sound mapping system and method according to an aspect of the present invention, aerial sound capture such as drones, etc. for the behavioral rights and habitats of target organisms such as amphibians, which have no choice but to check the presence or absence of living organisms depending on sound By mapping using a device, there is an advantage in that it is possible to objectify and spatialize the results of natural ecology surveys.

By using the breeding sound mapping system and method, the habitat of the target organism can be spatially specified, so it is possible to provide a data-based decision-making tool for environmental disputes that occur in various development activities, and to overcome the conventional uncertainty. It has the advantage of being able to materialize and objectify the ecological survey it depends on. Therefore, the breeding sound mapping system and method can be reflected in land use planning and design, etc., and can be utilized for conservation biological design such as urban development and ecological restoration for the conservation of biological habitats.

1 is a conceptual diagram illustrating the configuration of a biological breeding sound mapping system according to an embodiment.
FIG. 2 is a block diagram illustrating the configuration of an aerial sound collection device of a biological breeding sound mapping system according to an exemplary embodiment.
3 is a flowchart illustrating each step of a method for mapping biological breed sounds according to an embodiment.
4A to 4I are graphs illustrating breeding sounds measured by a biological breeding sound mapping method according to an exemplary embodiment.
5 is a conceptual diagram for explaining a sound processing process by a biological reproduction sound mapping method according to an embodiment.
6 is an image illustrating an exemplary breeding sound map generated by the biological breeding sound mapping method according to an embodiment.

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

1 is a conceptual diagram illustrating the configuration of a biological breeding sound mapping system according to an embodiment.

Referring to FIG. 1 , the biological breeding sound mapping system according to the present embodiment includes an aerial sound collection device 1 and a control device 3 . The aerial sound collection device 1 is a small unmanned aerial vehicle capable of flying in the air, such as a drone, and is configured to record sound including mating calls of a target organism while flying over the target area 100 . . For sound recording, the aerial sound collecting device 1 includes a sound collecting device 10 capable of recording sound, such as a polar directional microphone. In addition, the aerial sound collection apparatus 1 may acquire location information of the aerial acoustic collection apparatus 1 using a GPS module installed therein.

Although the aerial sound collection device 1 is shown in the form of a quadcopter in FIG. 1, the device shape of the aerial acoustic collection device 1 is not limited thereto, and the aerial acoustic collection device 1 follows a set path. It may have any type of device capable of recording sound generated near the ground surface with the sound collecting device 10 while flying along.

In the present specification, a target organism refers to a target organism that needs to identify a habitation region using a breeding sound, and may be, for example, a tasteless amphibian such as a ferret and a gold frog, but is not limited thereto. In addition, in the present specification, the target area 100 refers to a spatial range of a target to determine whether a target organism inhabits and/or a habitat location of the target organism.

The control device 3 receives the acoustic information recorded by the aerial acoustic sampling device 1 and the location information of the aerial acoustic sampling device 1, and uses the received acoustic information and the location information to make a breeding sound of the target organism. It can be spatialized on the map. To this end, the control device 3 may receive sound information and location information from the aerial sound collection device 1 through a wired connection or a recording medium. Alternatively, the control device 3 may receive one or more of the acoustic information and the location information from the aerial acoustic capture device 1 in a communication method through a wired and/or wireless network.

In one embodiment, the bioreproductive sound mapping system further comprises a steering device (2). The control device 2 is a device for a user to remotely operate the operation including the flight of the airborne sound collection device 1 . To this end, the steering device 2 may be configured to be able to communicate with the aerial sound harvesting device 1 via a wired and/or wireless network. For example, the manipulator 2 may transmit path information of the target area 100 in which the target organism is distributed to the airborne sound collecting apparatus 1 .

In an embodiment, the route information may include a location and/or an aerial photograph of the target area 100 . To this end, the manipulator 2 may receive an aerial photograph of the target area 100 from the external map data server 4 and transmit it to the aerial sound capture apparatus 1 . Alternatively, the aerial photograph of the target area 100 may be received from the map data server 4 by the control device 3 and then transmitted to the aerial acoustic capture device 1 and/or the control device 2 .

A communication method between the aerial sound collection device 1, the control device 2, the control device 3, and the map data server 4 in the biological breeding sound mapping system according to the embodiments is performed through a wired and/or wireless network. It may include all communication methods through which objects and objects can network, and is not limited to wired communication, wireless communication, 3G, 4G, or other methods.

For example, a wired and/or wireless network between the aerial acoustic capture device 1 , the steering device 2 , the control device 3 and the map data server 4 may be a LAN (Local Area Network), MAN (Metropolitan Area Network) Network), GSM (Global System for Mobile Network), EDGE (Enhanced Data GSM Environment), HSDPA (High Speed Downlink Packet Access), W-CDMA (Wideband Code Division Multiple Access), CDMA (Code Division Multiple Access), TDMA ( Time Division Multiple Access), Bluetooth, Zigbee, Wi-Fi, VoIP (Voice over Internet Protocol), LTE Advanced, IEEE802.16m, WirelessMAN-Advanced, HSPA+, 3GPP Long Term Evolution (LTE), Mobile WiMAX (IEEE 802.16e), UMB (formerly EV-DO Rev. C), Flash-OFDM, iBurst and MBWA (IEEE 802.20) systems, HIPERMAN, Beam-Division Multiple Access (BDMA), Wi-MAX (World Interoperability for Microwave Access) and may refer to a communication network using one or more communication methods selected from the group consisting of ultrasonic communication, but is not limited thereto.

In one embodiment, the control device 3 includes a first receiving unit 31 , a second receiving unit 32 , a sound processing unit 35 , and a map generating unit 36 . Also, in an embodiment, the control device 3 may further include a transmission unit 33 . Further, in one embodiment, the control device 3 may further include a storage unit 34 .

Each unit included in the control device 3 of the biological reproduction sound mapping system according to the embodiments may be entirely hardware, or may have aspects that are partly hardware and partly software. For example, each of the units 31-36 included in the control device 3 may collectively refer to hardware and related software for processing and/or transmitting and receiving data of a specific format and content in an electronic communication method. As used herein, terms such as “unit”, “module”, “device”, “terminal”, “server” or “system” are intended to refer to a combination of hardware and software driven by the hardware. For example, the hardware may be a data processing device including a CPU or other processor. In addition, software driven by hardware may refer to a running process, an object, an executable file, a thread of execution, a program, and the like.

In addition, each element constituting the control device 3 of the biological reproduction sound mapping system is not necessarily intended to refer to separate devices physically separated from each other. That is, the first receiving unit 31 , the second receiving unit 32 , the transmitting unit 33 , the storage unit 34 , the sound processing unit 35 , and the drafting generating unit 36 of FIG. 1 are the control device 3 . It is only functionally classified according to the operation performed by the hardware constituting the hardware, and each part does not necessarily have to be provided independently of each other. Of course, depending on the embodiment, at least one of the above-described units may be implemented as separate devices physically separated from each other.

The first receiver 31 may receive sound information recorded by the aerial sound collection device 31 . In addition, the second receiver 32 may receive the location information of the aerial sound collecting device 1 . The division of the first receiving unit 31 and the second receiving unit 32 is for explaining the function performed by the control device 3 , and the respective units 31 and 32 are not necessarily separate devices to be distinguished from each other. . The first receiving unit 31 and the second receiving unit 32 are connected to the aerial sound collecting device 1 by wire or by reading a recording medium containing the information recorded by the aerial sound collecting device 1 to obtain acoustic information and location information. can receive However, in another embodiment, the first receiving unit 31 and/or the second receiving unit 32 may receive information from the aerial sound collecting device 1 through a network communication method.

In an embodiment, the control device 3 may receive map information such as an aerial photograph of at least a partial area of the target area 100 from the map data server 4 , and store it in the storage unit 34 . Also in one embodiment, the transmitting unit 33 of the control device 3 transmits the above-described map information to the aerial sound collection device 1 and/or the control device 2, thereby capturing aerial acoustics based on the map information. It is also possible to define the path of the device 1 .

The sound processing unit 35 may extract a breeding sound of a target organism, such as amphibians, from the sound information received by the first receiving unit 31 . To this end, in an embodiment, the sound processing unit 35 may include a noise removing unit 351 and a detecting unit 352 . The noise removing unit 351 is configured to remove flight noise, such as background noise or a rotor sound of the aerial sound trapping device 1, from the acoustic information recorded by the sound collecting device 10 of the aerial acoustic trapping device 1 . can The detector 352 extracts the breeding sound of the target organism by detecting an acoustic pattern in which a sound having a frequency in a preset range is repeated every preset period from the sound information from which the noise has been removed by the noise removing part 351 . can do.

The map generating unit 36 maps the breeding sound of the target organism extracted by the sound processing unit 35 and the positional information of the aerial acoustic trapping device 1 received by the second receiving unit 32 to each other to map the breeding sound. can create For example, the breeding sound map may be a heatmap in which the intensity of the breeding sound of the target organism is synchronized with location information based on time information. In addition, the map generator 36 projects the intensity of the breeding sound on the two-dimensional plane corresponding to the target area 100 based on the synchronized location information, but for positions that do not match the breeding sound, adjacent positions matched with the breeding sound It is also possible to generate a heat map through linear interpolation using the propagation intensity of . However, the form of the breeding sound map that can be generated by the map generating unit 36 is not limited thereto.

FIG. 2 is a block diagram illustrating the configuration of an aerial sound collection device of a biological breeding sound mapping system according to an exemplary embodiment.

1 and 2 , the aerial sound collecting device 1 may include a sound collecting device 10 and a location detecting unit 14 . The sound collecting device 10 is a device for recording the breeding sound of a target organism near the ground in the aerial sound collecting device 1 in flight like a polar directional microphone installed in the direction of the ground. The sound information recorded by the sound collecting device 10 may be stored in the aerial sound collecting device 1 and/or transmitted to the control device.

The location detection unit 14 is a part for acquiring location information of the aerial sound capture device 1 like a GPS module. For example, the location detection unit 14 acquires the location information of the aerial acoustic sampling device 1 at a preset period (eg, 0.1 second) and stores it in the aerial acoustic sampling device 1 and/or the control device can be sent to

In an embodiment, the aerial sound collection device 1 may further include a communication unit 15 . The communication unit 15 may receive the operation information for the flight of the aerial sound collection device 1 from the control device 2 through a wireless and/or wired network. At this time, the aerial sound capture device 1 includes a photographing unit 13 for photographing image information around the aerial acoustic capture device 1 so that the user can perform flight manipulations wirelessly while looking at the surroundings of the aerial acoustic capture device 1 . ) may be further included. Also, the communication unit 15 may transmit image information captured by the photographing unit 13 to the control device 2 .

In an embodiment, the communication unit 15 may receive route information for defining the flight target area 100 of the aerial sound capture device 1 from the control device 2 or the control device 3 . In this case, the route information may include a location and/or an aerial photograph of the target area 100 .

In one embodiment, the aerial sound collection device 1 may further include a flight control unit 12 . The flight control unit 12 may automatically control the flight of the aerial sound collection device 1 according to the route information received through the communication unit 15 . For example, when route information defining the target area 100 is received through the communication unit 15 , the flight control unit 12 may cause the aerial sound collection device 1 to pass over each point in the target area 100 . It is possible to automatically control the flight of the aerial sound collection device 1 by defining a movement line in the form of a grid or the like. However, this is an example, and in another embodiment, the route information may be configured to specifically define the movement line itself of the aerial sound collection device 1 rather than the target area 100 .

In one embodiment, the aerial sound collecting device 1 may include a driving unit 11 configured to selectively raise or lower the sound collecting device 10 . For example, the driving unit 11 may include a mechanism capable of adjusting the height of the sound collecting device 10 coupled to the end of the wire rope while winding or unwinding the wire rope. However, this is exemplary, and in another embodiment, the driving unit 11 may be a device configured to raise or lower the sound collecting device 10 through other different mechanisms not described herein.

In an embodiment, when it is possible to raise or lower the sound collecting device 10 by the driving unit 11 , the driving of the sound collecting device 10 may be combined with flight control of the aerial sound collecting device 1 . For example, while flying in a state in which the sound collecting device 10 is raised as far as possible toward the body of the aerial sound collecting device 1 in normal times, when it reaches the target area 100 where the sound is to be recorded, the sound is collected by the driving unit 11 . By lowering the device 10 in the downward direction of the aerial sound collecting device 1 , the sound collecting device 10 may be used to record the breeding sound of the target organism generated in the target area 100 .

Also, in an embodiment, the driving of the sound collecting device 10 by the driving unit 11 may be performed based on analysis of the sound recorded by the sound collecting device 10 . For example, in a normal state in which the aerial sound collection device 1 is flying in the target area 100 , first, the sound collection device 10 is raised to the maximum toward the body of the aerial acoustic collection device 1 or the sound collection device 10 ), but the sound is recorded in a partially lowered state, but in this state, the intensity of the sound signal in the preset frequency range (that is, the breeding sound frequency) in the sound recorded in the sound collecting device 10 is greater than or equal to the preset threshold threshold value The region in which the corresponding acoustic signal is measured with the above intensity may be determined as the region of interest 200 .

Next, through the flight control unit 12 of the aerial acoustic sampling device 1, the aerial acoustic sampling device 1 flies over the target area 100 and then repeatedly flies only the region of interest 200 again, or / It is also possible to control the flight of the airborne acoustic capture device 1 to perform a precision flight with respect to the region of interest 200 . Precision flight refers to allowing the aerial acoustic sampling device 1 to fly at a lower altitude and/or at a lower speed than when flying over another area of the target area 100 other than the area of interest 200 . At this time, when the aerial sound collecting device 1 flies precisely over the region of interest 200 , the driving unit 11 is configured to record the sound at a height closer to the ground surface than the normal state. ) can be lowered.

3 is a flowchart illustrating each step of a method for mapping biological breed sounds according to an embodiment. Hereinafter, for convenience of explanation, a method for mapping biological breeding sounds according to the present embodiment will be described with reference to FIGS. 1 and 3 .

First, the user may transmit route information related to the target area 100 for detecting the breeding sound of the target organism to the aerial sound collection device 1 ( S1 ). For example, the user may transmit route information to the aerial acoustic sampling device 1 by using the control device 2 for remotely controlling the aerial acoustic sampling device 1 . In this case, the route information refers to information defining a location of the target area 100 or defining an area or a movement line in which the aerial sound collecting device 1 will fly within the target area 100 . In an embodiment, the route information may include an aerial photograph of at least a portion of the target area 100 . In addition, such an aerial photograph may be received from the map data server 4 and transmitted to the aerial acoustic capture device 1 .

The aerial sound collecting device 1 may record sounds generated on the ground using the sound collecting device 10 while automatically flying according to the received route information. In addition, the aerial acoustic sampling apparatus 1 may periodically acquire the location information of the aerial acoustic sampling apparatus 1 by using a location detector such as a GPS module. For example, the location information of the aerial sound collecting device 1 may be collected through the GPS module at a 0.1 second cycle, but the present invention is not limited thereto.

Next, the control device 3 may receive sound information recorded by the aerial sound collection device 1 using the sound collection device 10 from the aerial acoustic collection device 1 ( S2 ). In addition, the control device 3 may receive the location information of the aerial sound collection device 1 (S3). Transmission of acoustic information and location information is recorded by connecting the aerial acoustic sampling device 1 and the control device 3 by wire or using the aerial acoustic sampling device 1 in a state in which the aerial acoustic sampling device 1 has finished flying. A medium (eg, a USB disk, etc.) may be connected to the control device 3 through a wired connection, for example. However, this is only an example, and in another embodiment, the control device 3 may receive acoustic information and location information from the aerial acoustic sampling device 1 in real time or periodically using communication through a wired and/or wireless network. have.

Next, the control device 3 may process the received acoustic information to extract a breeding sound of a target organism, such as an amphibians, from the acoustic information. Specifically, the control device 3 may remove a noise signal such as a background noise or a flight noise such as a rotor sound of the aerial acoustic capture device 1 from the acoustic information (S4). The removal of the noise signal may be performed based on a known or to be developed noise filtering technique, such as removing a signal of a predetermined specific frequency range, and is not limited to a specific method.

Next, the control device 3 may extract the breeding sound of the target organism by detecting an acoustic pattern corresponding to the breeding sound of the target organism from the noise-removed acoustic information ( S5 ). In this case, the acoustic pattern corresponding to the breeding sound of the target organism may mean an acoustic signal defined through a combination of a preset frequency range and a preset repetition period.

4A to 4I are graphs showing the breeding sounds measured by the biological breeding sound mapping method according to an embodiment, respectively, a frog, a tree frog, a toad, a true frog, a northern mountain frog, a Suwon tree frog, a gold frog, a Korean frog, and a bull. The frog's breeding sound is shown in a time-vs-frequency graph.

Referring to FIG. 4A , the breeding sound of a ferret has a form in which a sound having a frequency range (f ₁ ) of about 0 to about 4 kHz is repeated with a period (t ₁ ) of about 0.2 to 0.3 seconds (s). On the other hand, referring to Figure 4b, the breeding sound of a tree frog is a sound having a frequency range (f ₂ ) of about 0 to 12 kHz is repeated with a period (t ₂ ) of about 0.3 to 0.4 seconds (s). have As described above, the breeding sound of the target organism has a characteristic in which a sound in a specific frequency range is repeated at a specific period, and thus the sound pattern of the breeding sound can be defined through a combination of the frequency range and the repetition period. Also, as shown in FIGS. 4A to 4I , it can be seen that the acoustic pattern of the breeding sound is different for each species.

Embodiments of the present invention are configured to extract the breeding sound of a target organism by detecting an acoustic signal defined by a combination of a preset frequency range and a preset repetition period in the collected acoustic information.

Although not shown in the drawings, the repetition period between each signal in the acoustic pattern of the breeding sound of the target organism may not necessarily be constant. For example, the acoustic pattern of a breeding sound is such that the interval t ₁ between the first and second sounds, the interval t ₂ between the second and third sounds, etc., for a total of n sounds and n- between them It may be defined by one time interval (t ₁ , t ₂ , ... t _n-1 ) (n is an arbitrary natural number).

Referring back to FIGS. 1 and 3 , the control device 3 may synchronize the breeding sound of the target organism extracted as described above with the location information of the aerial acoustic capture device 1 ( S6 ). At this time, synchronizing the breeding sound with the location information means that the breeding sounds measured at the same time based on the time information are matched with the location information of the aerial sound capture device acquired at the same time, so that each breeding sound is located at a certain position. It may mean a process of specifying whether or not it has been detected.

5 is a conceptual diagram for explaining a sound processing process by a biological reproduction sound mapping method according to an embodiment.

Referring to FIG. 5 , the location information 51 obtained by using the GPS module in the aerial sound capture device includes longitude and latitude, and the location information 51 includes the date, time, etc., at which the location information was acquired. information is matched. The control device removes noise such as background noise from the original data 52 of the acoustic information recorded by the aerial acoustic capture device, and synchronizes the noise-removed acoustic information 53 with the location information 51 based on the time information. can The data frame 54 including the synchronized sound information and the location information may include the sound data 535 synchronized to the location information based on time information together with location information such as longitude and latitude.

In the embodiment shown in Fig. 5, the acoustic data 535 synchronized with the location information has the form of the intensity of the propagation sound expressed in decibels (dB), but this is an example, and in another embodiment, it is extracted as a numerical value in another different form Alternatively, it is also possible to use processed sound data.

Referring back to FIGS. 1 and 3 , the control device 3 may generate a breeding sound map of the target organism by using the breeding sound of the target organism synchronized with the location information ( S7 ). For example, the breeding sound map may be a heat map indicating the intensity of breeding sounds measured at each location of the target area 100 .

6 is an image illustrating an exemplary breeding sound map generated by the biological breeding sound mapping method according to an embodiment. As shown in FIG. 6 , the breeding sound map generated by the biological breeding sound mapping method according to the embodiments indicates the strength of the breeding sound detected in the corresponding region at the position where the breeding sound of the target organism is detected in the target region. It may have the form of a displayed heat map.

In an embodiment, the control device of the biological breeding sound mapping device may generate a heat map using a linear interpolation method using each position at which a breeding sound is detected and the intensity of a breeding sound detected at each position in generating the breeding sound map. . The location information obtained by the aerial acoustic capture device is not completely continuous, and the location information may be intermittent information measured at a preset period (eg, 0.1 second). In this case, if each location information is matched with a breeding sound based on time, the breeding sounds may also be discontinuous in space.

Accordingly, in one embodiment, the control device projects the location information of the aerial sound collection device on a two-dimensional plane corresponding to the target area, but intermittently interpolates the intensity of the propagation sound of each location projected on the two-dimensional plane to each intermittent location. Breeding tones can be mapped in such a way that the values of breeding sounds in adjacent areas corresponding to points between information are determined. However, this is an example, and in another embodiment, the control device may generate a propagation sound map only from the measured values without the aforementioned linear interpolation process.

The operation by the biological reproduction sound mapping method according to the embodiments described above may be at least partially implemented as a computer program and recorded in a computer-readable recording medium. A computer-readable recording medium in which a program for implementing an operation by the biological reproduction sound mapping method according to the embodiments is recorded and includes all types of recording devices in which computer-readable data is stored. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage device. In addition, the computer-readable recording medium may be distributed in network-connected computer systems, and the computer-readable code may be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the present embodiment may be easily understood by those skilled in the art to which the present embodiment belongs.

Although the present invention as described above has been described with reference to the embodiments shown in the drawings, it will be understood that these are merely exemplary, and that various modifications and variations of the embodiments are possible therefrom by those of ordinary skill in the art. However, such modifications should be considered to be within the technical protection scope of the present invention. Accordingly, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

Claims (13)

an aerial sound collection device comprising a sound collecting device and a location detector for recording the breeding sound of a target organism, and capable of flying over a target area in which the target organism is distributed; and
The sound information recorded by the sound collecting device and the location information of the aerial sound collecting device measured by the location detector are received from the aerial sound collecting device, and the reproduction sound of the target organism included in the sound information is received. and a control device configured to generate a breeding sound map by mapping with the location information.
According to claim 1,
and the aerial sound collecting device includes a driving unit configured to raise or lower the sound collecting device.
According to claim 1,
The control device is further configured to extract the breeding sound of the target organism by detecting, from the acoustic information, an acoustic signal defined by a combination of a preset repetition period and a preset frequency range.
According to claim 1,
The control device is further configured to generate the breeding sound map by synchronizing the intensity of the breeding sound of the target organism with the location information based on time information.
According to claim 1,
and a control device configured to transmit route information of a target area in which the target organism is distributed to the aerial acoustic sampling device by communicating with the aerial acoustic sampling device.
a first receiving unit configured to receive sound information recorded by the aerial acoustic sampling device from an aerial acoustic sampling device capable of flying over a target area in which a target organism is distributed;
a second receiver configured to receive location information of the aerial acoustic sampling device from the aerial acoustic sampling device;
a sound processing unit configured to extract a breeding sound of the target organism included in the sound information; and
and a map generator configured to generate a breeding sound map by mapping the breeding sounds of the target organism with the location information.
7. The method of claim 6,
The sound processing unit,
a noise removing unit configured to remove a preset noise signal from the sound information; and
and a detection unit configured to extract the breeding sound of the target organism by detecting an acoustic signal defined by a combination of a preset repetition period and a preset frequency range from the acoustic information from which the noise signal has been removed. control device for
7. The method of claim 6,
The map generator is further configured to generate the breeding sound map in the form of a heat map in which the intensity of the breeding sound of the target organism is synchronized with the location information based on time information.
9. The method of claim 8,
The map generator is further configured to generate the heat map by linearly interpolating the intensity of the propagation sound projected to each position on the two-dimensional plane corresponding to the target area.
receiving, by a control device, acoustic information recorded by the aerial acoustic sampling device from an aerial acoustic sampling device flying over a target area in which a target organism is distributed;
receiving, by the control device, location information of the aerial acoustic sampling device from the aerial acoustic sampling device;
extracting, by the control device, a breeding sound of the target organism from the sound information; and
and generating, by the control device, a breeding sound map by mapping the breeding sounds of the target organism with the location information.
11. The method of claim 10,
The step of extracting the breeding sound of the target organism includes, by the control device, detecting an acoustic signal defined by a combination of a preset repetition period and a preset frequency range from the acoustic information. .
11. The method of claim 10,
The generating of the breeding sound map includes generating, by the control device, a heat map in which the intensity of the breeding sound of the target organism is synchronized with the location information based on time information.
A computer program stored in a computer-readable recording medium in combination with hardware to execute the biological reproduction sound mapping method according to any one of claims 10 to 12.

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