JP6635626B1 - A method to attach a sensor that detects carbon dioxide to the drone, search for points with high concentration, and send that information to mobile terminals such as smartphones - Google Patents

Abstract

Provided is a method that has less restrictions on use, easily grasps position information of a human who has been buried by a disaster, and enables an efficient rescue operation. A method for finding a place of a person who has been buried alive due to a landslide or a collapse of a building, the system comprising a drone 10 including a carbon dioxide sensor 13 for detecting and measuring carbon dioxide. , The step of flying a drone, the step of detecting the concentration of human breathing with a carbon dioxide sensor, the step of specifying the position information of the detected place, and the step of transmitting the information to the portable terminal 70 thereafter. , And [Selection diagram] Fig. 1

Description

  The present invention relates to a method for attaching a sensor for sensing carbon dioxide to a drone, searching for a point with a high concentration, and transmitting the information to a portable terminal such as a smartphone.

  When a human is buried alive, it is said that the survival rate of the human in that state decreases as time elapses after the burying, and in particular, sharply decreases after 72 hours since the burying. Therefore, when a disaster such as a landslide or a building collapse occurs and a human is buried alive, it is necessary to find and rescue the human as soon as possible.

  Further, Patent Documents 1 and 2 below disclose that when a human becomes buried by the above-mentioned disaster or the like, the position of a device worn by the human or a portable terminal carried by the person can be specified from the outside. There has been disclosed a technology capable of easily specifying the location of a living buried person by grasping the position. According to such a technique, the place of a living buried person can be specified more quickly, so that the work to rescue such a person can be started earlier.

JP-A-11-30674 JP 2007-13413 A

  However, it is not easy for ordinary people who are not experts in rescue operations to search and rescue buried human beings, so they have to wait for the rescue team to arrive. In some cases, a considerable amount of time has passed since the time of the disaster, when rescue was started by searching for and finding humans buried alive at the disaster site.

  In addition, the techniques disclosed in Patent Documents 1 and 2 cannot be used when a buried person does not wear a predetermined device or does not carry a predetermined portable terminal. There are restrictions.

The present invention has been made in view of the above circumstances, has few restrictions on use, and is capable of easily grasping the position information of a human who has been buried alive by a disaster and efficiently performing a rescue operation. an object of the present invention is to provide a how to.

Therefore, the inventor of the invention according to the present application pays attention to carbon dioxide emitted by humans by respiration, and by sensing it, when the rescue team arrives at the stricken area, rescues the place of the buried person. I figured out a way to inform the squad. By the way, it is said that a person's daily respiratory volume is inhaling and exhaling 10 m ³ of air. At the extreme, assume that all oxygen in the air is carbon dioxide. Since the proportion of oxygen in the air is about 20%, it is calculated that 20% of 10 m ³ , that is, 2 m ³ is carbon dioxide. If you emit carbon dioxide as much as this, the buried person cannot move, so it is assumed that carbon dioxide accumulates there. Then, using a commercially available carbon dioxide sensor, it can be inferred that if there is any increase in the concentration of carbon dioxide, there may be a person there.

In the present invention, a method for finding a place of a person who has been buried alive due to a landslide or a collapse of a building, wherein a drone including a receiving device for receiving a positioning signal and a plurality of propellers is viewed in a vertical direction. At the lower end of the center surrounded by multiple propellers, a process where a carbon dioxide sensor used for detecting and measuring carbon dioxide is fixed, and a drone with the carbon dioxide sensor fixed to the disaster area a flight step of flying the near surface and fly in flight step, thereby detecting the carbon dioxide concentration to the extent that the carbon dioxide sensor human is breathing, the location of the drone obtained when detecting the carbon dioxide, reception and specifying, based on the positioning signal device receives the position information regarding the position of the drone identified in this step, the mobile terminal receives, mobile end Characterized in that it comprises a and a step of displaying on the display unit.

In the above method, the step of securing the receiving device on top of the central portion, further wherein the flight process transmits an operation signal from the controller to the drone may skip in accordance with an operation signal drone. Further , in the above method, the position information may be transmitted to a plurality of mobile terminals. Still further, in the above method, the step of calculating the carbon dioxide concentration from the carbon dioxide detected by the drone, associating the carbon dioxide concentration data with the positional information, and including the carbon dioxide concentration data for each location in the affected area A step of creating the concentration data, and a step of transmitting the carbon dioxide concentration data to the mobile terminal, and displaying the data on the map or aerial photograph on the display unit as a heat map that visualizes and expresses the strength of the carbon dioxide concentration data. May be further included.

According to the method of the present invention, by flying a drone to the affected area and acquiring information on the presence or absence and concentration of carbon dioxide for each place, the place of a living buried person is a place with a high concentration of carbon dioxide Can be easily identified. Therefore, the method of the present invention can be executed even when there is a person who has been buried, and even when such a person does not wear a predetermined device or does not carry a predetermined portable terminal. It is possible to easily search for people who have become sick even if they are ordinary people, so it is possible to start search activities even before the rescue team arrives, and, as a result, people who are alive and buried can be found earlier. Can be rescued. In addition, according to the method of the present invention, the location information of the place where the concentration of carbon dioxide is high in the stricken area is transmitted to the portable terminal. Can be easily and reliably transmitted, and the rescue operation can be performed more efficiently based on such information .

FIG. 1 is a diagram illustrating an example of a configuration of a system used in a method according to a first embodiment. FIG. 2 is a diagram illustrating a part of the configuration of the drone in FIG. 1. 5 is a flowchart illustrating a method according to the present invention. It is a figure for explaining how to fly the drone concerning the present invention. It is a figure showing an example of the composition of the system used for the method concerning a 2nd embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to this. Further, in the drawings, the scale is appropriately changed and expressed, for example, by describing a part of the embodiment in a larger or emphasized manner in order to explain the embodiment. The method of the embodiment described below is a method for finding a place of a person who has been buried alive by a landslide or a collapse of a building. More specifically, there is a method in which a sensor for sensing carbon dioxide is attached to the drone, a point where the concentration of carbon dioxide is high is searched for, and the position information and information on the carbon dioxide concentration are sent to a portable terminal (such as a smartphone). In this method, a point having a high concentration of carbon dioxide is detected, and the point is specified as a place where a person who has been buried alive is present.

<First embodiment>
FIG. 1 is a diagram illustrating an example of a configuration of a system 1 used in the method according to the first embodiment. As shown in FIG. 1, the system 1 includes a drone 10, a controller 20, a plurality of artificial satellites 30a and 30b, a network 40, an information processing device 50, an information storage device 60, and a portable terminal 70. Be composed. In FIG. 1, the drone 10 is shown as a side view when viewed from the horizontal direction. The drone 10 has a drone body 11, a receiving device 12, a carbon dioxide sensor 13, and a data processing device 14.

  The drone body 11 includes a central portion 11a, four arms 11b, 11c, 11d, 11e extending radially from the central portion 11a in four directions, and two arms provided at a lower portion of the central portion 11a. It has legs 11f and 11g. Propellers 11P are respectively mounted on the upper ends of the distal ends of the arms 11f and the like. The drone body 11 includes a controller signal receiving unit (not shown) that receives an operation signal transmitted from the controller 20, a drone body control unit (not shown) that controls the movement of each unit of the drone body 11 based on the operation signal, And a camera as shown.

  The receiving device 12 includes a receiving unit 12A (see FIG. 2) that periodically (for example, every second) receives a positioning signal from a plurality of artificial satellites 30a and the like. The receiving unit 12A is provided with, for example, a number corresponding to the number of artificial satellites 30 that simultaneously receive the positioning signal in the receiving device 12. The receiving device 12 is attached and fixed to, for example, an upper part of a central portion 11a of the drone main body 11 as viewed in a vertical direction.

The carbon dioxide sensor 13 is a sensor provided for the purpose of detecting and measuring carbon dioxide (CO ₂ ), and has a CO ₂ detection unit 13A (see FIG. 2) capable of detecting carbon dioxide. The CO ₂ detection unit 13A is capable of detecting carbon dioxide at a concentration at which humans are breathing. The carbon dioxide sensor 13 is attached and fixed to, for example, a lower part of the central portion 11a of the drone body 11 as viewed in the vertical direction, and can be used for detecting carbon dioxide immediately below the drone body 11 and measuring its concentration. It is possible.

  FIG. 2 is a diagram showing a part of the configuration of the drone 10 of FIG. As shown in FIG. 2, the data processing device 14 has a processing unit 14A and a storage unit 14B. The data processing device 14 includes, for example, a single-board computer (for example, a Raspberry Pi) equipped with a CPU (Central Processing Unit) for performing arithmetic processing on a single business card-sized board and a virtual memory.

The processing unit 14A has a position specifying unit 14a. The position specifying unit 14a specifies the position of the drone 10 by calculating the position based on the plurality of positioning signals received by the receiving unit 12A, and creates position data of the drone 10. The processing unit 14A has a CO ₂ concentration data creating unit 14b. The CO ₂ concentration data creation unit 14b calculates (measures) the carbon dioxide concentration based on the signal regarding the carbon dioxide detected by the CO ₂ detection unit 13A, and creates the carbon dioxide concentration data. Further, the processing unit 14A can transmit the position data and the carbon dioxide concentration data to the information processing device 50 or the information storage device 60 connected to the network 40.

The storage unit 14B can store position data and carbon dioxide concentration data. The storage unit 14B can also store data temporarily generated in the course of the processing of the processing unit 14A. The storage unit 14B, such as program 14p for executing the processing of process as well as the CO ₂ concentration data creating unit 14b of the position specifying unit 14a described above is stored.

  Returning to FIG. 1, the controller 20 is used to remotely control the drone body 11. The controller 20 has, for example, a pair of left and right sticks 20a and 20b that protrude from the surface and move so as to fall at a shallow angle, convert a user's operation amount into an electric signal, and convert the converted signal into a radio wave. From the transmitting unit 20c to the controller signal receiving unit. Wireless technology is used to transmit the operation signal from the controller 20 to the controller signal receiving unit. The transmission of the operation signal from the controller 20 to the controller signal receiving unit may be performed by wire instead of wirelessly. In this case, the drone 10 is used while being connected to the controller 20 by a communication cable.

  The plurality of artificial satellites 30a and the like are satellites used in a GPS (Global Positioning System), and each emit a positioning signal. The network 40 is a configuration of an information communication network, and is, for example, the Internet. The information processing device 50 includes an arithmetic processing unit such as a CPU, receives the position data and the carbon dioxide concentration data transmitted from the data processing device 14, associates (associates) these data, and associates the data with the location of the disaster area. Create carbon dioxide concentration data for each position. The information storage device 60 is an information storage medium such as a hard disk, for example, and stores the carbon dioxide concentration data for each position created by the information processing device 50. The mobile terminal 70 is a mobile information terminal such as a smartphone or a tablet. The mobile terminal 70 includes, for example, a display unit 70a (for example, a display such as a liquid crystal display or an organic EL display), a processing unit (not shown), and a storage unit (not shown). The mobile terminal 70 can display the carbon dioxide concentration data for each position created by the information processing device 50 on the display unit.

  Subsequently, a method for finding a place of a buried person according to the present embodiment will be described. FIG. 3 is a flowchart illustrating a method according to the present invention. The method according to the present embodiment will be described with reference to the flowchart of FIG. 3 and other drawings as appropriate.

  Although the method according to the present embodiment is assumed to be performed by a general person who is not a rescue worker and is not a person familiar with the handling of rescue activity tools, a rescue worker or the like may perform the method. This is the same for other embodiments described later.

  When a disaster such as a landslide or a building collapse occurs and a person is buried alive, first, as shown in FIG. 3, the drone body 11 is prepared (step S01). The drone body 11 prepared here may be a general drone for aerial photography, spraying of agricultural chemicals, and the like. In addition, a controller 20 for remotely controlling the drone body 11 is provided together with the drone body 11.

  Next, the function of acquiring position information (position information acquisition function) is fixed to the drone body 11 (step S02). In this step, a receiving device 12 that periodically receives positioning signals from a plurality of artificial satellites 30 is fixed to the drone body 11. As described above, the receiving device 12 is attached to, for example, the upper part of the central portion of the drone body 11 viewed in the vertical direction. The fixing of the receiving device 12 is performed by various fixing methods such as screwing.

  Further, the carbon dioxide sensor 13 is fixed to the drone body 11 (Step S03). In this step, the carbon dioxide sensor 13 is attached and fixed to the lower part of the central portion 11a of the drone body 11 viewed in the vertical direction. Also, this step is performed using various fixing methods such as screwing, for example, as in step S02. Note that the process of step S03 is not limited to being performed after step S02, and may be performed before step S02 or simultaneously with step S02.

  By the processes of steps S01 to S03, a receiving device 12 having a function of acquiring position information or topographical information, and a carbon dioxide sensor 13 capable of detecting carbon dioxide having a concentration at which humans are breathing are mounted. A drone 10 is prepared.

  Subsequently, the drone 10 is skipped by the controller 20 (step S04). In this step, the user operates the controller 20 to fly the drone 10. Here, the user places the drone 10 near, for example, a place where the person H is supposed to be buried or a place where the person H may be buried as shown in FIG. To near the surface of the place). At this time, the user may operate the controller 20 while looking at the drone 10 or may watch the image taken by the camera of the drone 10 in almost real time, or may use the position data of the drone 10 You may go while checking.

Returning to FIG. 3, following step S04, carbon dioxide is detected (step S05). In this step, the CO ₂ detection unit 13A detects carbon dioxide near the surface (near the ground surface) of, for example, earth and sand or a collapsed building. Here, CO ₂ detection unit 13A, carbon dioxide may be detected only when the predetermined amount or more, for example, CO ₂ detector 13A is a human or a concentration of a degree that is breathing The detection may be performed only in the case. The CO ₂ detection unit 13A detects carbon dioxide and is used for measuring the amount and concentration of carbon dioxide. The data on the carbon dioxide acquired by the CO ₂ detection unit 13A is transmitted to the CO ₂ concentration data creation unit 14b as a signal on the carbon dioxide. The CO ₂ concentration data creating unit 14b calculates carbon dioxide concentration based on a signal related to carbon dioxide detected by the CO ₂ detecting unit 13A, and creates carbon dioxide concentration data. The processing of the CO ₂ concentration data creation unit 14b is executed based on, for example, the program 14p stored in the storage unit 14B. Since the presence or absence of the detection of carbon dioxide and the measurement value of carbon dioxide change according to the height from the ground surface, these data are, for example, from the ground surface to the measurement position in the CO ₂ concentration data creation unit 14b. May be obtained, and the height information may be appropriately adjusted based on the height information.

  At the same time as step S05, the detection location is specified (step S06). In the step S06, the position specifying unit 14a calculates position based on the plurality of positioning signals received by the receiving unit 12A, creates position data, and specifies the position of the drone 10. The processing of the position specifying unit 14a is executed based on, for example, the program 14p stored in the storage unit 14B.

The processing of the position specifying unit 14a and the processing of the CO ₂ concentration information creating unit 14b are performed in synchronization. That is, the signal relating to the carbon dioxide concentration and the positioning signal are obtained at substantially the same time. Then, the carbon dioxide concentration data and the position data are created at the same time and stored in the storage unit 14B. Further, the processing of the position specifying unit 14a and the processing of the CO ₂ concentration information creating unit 14b are performed at a timing synchronized with the above-described positioning signal and are performed periodically. Note that the timing of the process of the process and the CO ₂ concentration information creation section 14b of the position specifying unit 14a can be arbitrarily set, for example, may be the process at a desired timing of the user is performed.

  A set of the carbon dioxide concentration data and the position data processed at the same time is transmitted from the drone 10 to the information processing device 50 via the network 40, and is accumulated in the order of time. The transmission of the set of data from the drone 10 to the network 40 is performed by wireless technology.

  Subsequently, carbon dioxide concentration data for each location is created (step S07). In this process, the information processing device 50 associates (associates) these data based on a set of data including the carbon dioxide concentration data and the position data, and creates the carbon dioxide concentration data for each position of the affected area. Is done. The carbon dioxide concentration data at each position created in this way is, for example, a heat map that visually displays and displays the strength of the carbon dioxide concentration measured for each measurement location on a map or aerial photograph data, It may be data in which measured numerical values are arranged on a measurement place.

  Subsequently, the carbon dioxide concentration data for each location is transmitted to the portable terminal 70 (Step S08). In this step, the carbon dioxide concentration data is transmitted from the information processing device 50 to the portable terminal 70 via the network 40.

  The carbon dioxide concentration data for each location is transmitted to a plurality of mobile terminals 70. As a result, the acquired information of the point where the concentration of carbon dioxide is high can be shared with the portable terminal of another person, and as a result, the carbon dioxide concentration data for each place can be quickly transmitted to a plurality of persons. it can. Note that the carbon dioxide concentration data for each location is not limited to being transmitted to a plurality of portable terminals 70, and may be transmitted to only one portable terminal 70. The transmission of the carbon dioxide concentration data to the mobile terminal 70 is automatically performed, but may be performed in response to a request from the mobile terminal 70.

  Subsequently, the portable terminal 70 displays the carbon dioxide concentration data for each location (step S09). In this step, the display unit of the portable terminal 70 displays, for example, a heat map that visualizes and displays the intensity of the carbon dioxide concentration measured for each measurement location on the map data, data in which measured numerical values are arranged on a map, and the like. Is displayed. Thus, the user or the rescue squad arriving later can easily grasp the place where the concentration of carbon dioxide is high simply by looking at the display unit of the portable terminal 70, and the person H in the living state (see FIG. 4) This makes it easier to find where you are. Further, the rescue squad can efficiently perform a rescue operation based on the display.

  According to such a method of the first embodiment, the location of the living buried person H can be changed by flying the drone 10 to the affected area and acquiring information on the presence or absence and concentration of carbon dioxide at each location. It can be easily identified as a place where the concentration of carbon is high. Therefore, according to the method of the present invention, the method can be performed even when the buried person H does not wear a predetermined device or does not carry a predetermined portable terminal, and can be a general person. However, since it is possible to easily perform a search operation for a buried person, the search operation can be started even before the rescue squad arrives. can do. In addition, according to the method of the first embodiment, the location information of the place where the concentration of carbon dioxide is high in the stricken area is transmitted to the portable terminal 70. Position information can be easily and surely transmitted, and the rescue operation can be performed more efficiently based on such information.

<Second embodiment>
Next, a method according to the second embodiment will be described. In the description of the method according to the second embodiment, differences from the method according to the first embodiment described above will be mainly described.

FIG. 5 is a diagram illustrating an example of a system 2 used in the method according to the second embodiment. In the figure, components that are the same as or equivalent to those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted or simplified. As shown in FIG. 5, the system 2 includes a drone 10, a controller 20, a plurality of artificial satellites 30a and 30b, and a portable terminal 70. The network 40 of the system 1, the information processing device 50, And the information storage device 60 is not provided. In the system 2, the data processing device 14 has a configuration corresponding to the information processing device 50 and the information storage device 60. That is, in the system 2, in addition to the configuration of the position specifying unit 14a and the CO ₂ concentration data creating unit 14b, the processing unit 14A further associates the position data and the carbon dioxide concentration data with each other, and It has an arithmetic processing unit (not shown) for creating carbon concentration data. In the system 2, the storage unit 14B has a capacity to store carbon dioxide concentration data.

  Subsequently, a method according to the second embodiment will be described. The method according to the present embodiment has the same steps S01 to S09 as the first embodiment. However, the step of creating the carbon dioxide concentration data for each location in step S07 is not performed by the information processing apparatus, but is performed by the processing unit 14A of the drone 10. This processing is executed based on, for example, the program 14p stored in the storage unit 14B. In the data transmission step of step S08, the data is not transmitted from the information storage device to the mobile terminal 70 via the network 40, but is transmitted from the drone 10 to the mobile terminal 70. This transmission is performed based on, for example, the program 14p stored in the storage unit 14B.

  According to the method according to the second embodiment described above, the same effects as those of the method according to the above-described first embodiment can be obtained.

<Third embodiment>
Subsequently, a method according to the third embodiment will be described. The system used in the method according to the third embodiment can be executed in the system 2 described above. In the following description of the method according to the third embodiment, differences from the method according to the above-described second embodiment will be mainly described.

  The method according to the present embodiment includes the same steps as steps S01 and steps S03 to S09 shown in FIG. On the other hand, the method according to the present embodiment is different from the method according to the second embodiment in not having step S02.

  In the method according to the present embodiment, a camera is attached to the lower part of the center portion of the drone main body 11 when viewed from the vertical direction, and the drone is blown while the camera is directed vertically downward. At this time, the camera and the carbon dioxide sensor 13 may be arranged so that the carbon dioxide sensor is reflected in a part of the image acquired by the camera.

  In steps S05 and S06, an image (still image or moving image) taken by the camera at the same time as the detection of carbon dioxide by the carbon dioxide sensor 13 is obtained. Then, the data relating to the amount and concentration of carbon dioxide is associated with (corresponds to) the image of the camera acquired simultaneously with the acquisition of this data. As a result, data on the presence or absence and concentration of carbon dioxide in the vicinity of the ground surface at a position vertically below the center portion of the image of the camera is generated. Then, in the steps S08 and S09, this data is transmitted to the portable terminal 70. On the display unit of the portable terminal 70, for example, data such as the concentration of carbon dioxide at that time is displayed together with the image of the camera. From this image, the user can grasp the concentration of carbon dioxide at the position of the central part of the image of the camera.

  According to the method according to the third embodiment described above, the same effects as those of the methods according to the above-described first and second embodiments can be obtained. Further, according to the present embodiment, the concentration of carbon dioxide is displayed on the display unit of the portable terminal 70 in association with the image of the site of the stricken area after the occurrence of the disaster. For this reason, the user can see the location where the concentration of carbon dioxide is high by looking at such a display. As a result, the user can find out the position of the person H in the living state and at the same time, the appearance of the position through the image of the camera. (Site conditions) can be ascertained. If a characteristic image such as a fallen tree or a boulder appears in the camera image when the concentration of carbon dioxide is high, the rescue squad can go to the landmark.

<Fourth embodiment>
Subsequently, a method according to the fourth embodiment will be described. The method according to the fourth embodiment includes the respective steps of step S01 and steps S03 to S09 shown in FIG. 3, as in the other embodiments described above. Therefore, the method according to the present embodiment will be described mainly on the differences from the method of the above-described embodiment.

  In the method of the present embodiment, the flight route of the drone 10 is set in advance before the step of flying the drone 10 in step S04. The flight path of the drone 10 is set so as to pass above (near the ground surface) a place where the person H is supposed to be buried or a place where the person H may be buried. . The time at which the drone 10 passes through the route set in this way is set in advance. That is, prior to the flight of the drone 10, the position (location) of the drone 10 and its time for each time are set, and flight plan information having the information on the position and time of the drone 10 is created. At this time, the flight route of the drone 10 is set based on, for example, GPS and map information. This flight plan information is stored in the storage unit 14B of the drone 10, for example, in a program state.

  In the step of flying the drone 10 in step S04, the drone 10 flies by automatic control. In this step, the drone 10 may fly by manual operation of the user according to the flight plan information.

Subsequently, the carbon dioxide sensing step of step S05, while flying on the basis of the flight plan information drone 10, as well as create a CO ₂ concentration data is detected carbon dioxide in the same manner as the above embodiment, detects the carbon dioxide Get time information. In the step of specifying the detection location in step S06, the position of the drone 10 at the time when the carbon dioxide is detected is specified from the flight plan information. As described above, in the present embodiment, the detection location of carbon dioxide is specified based on both the flight plan information and the information on the detection time of carbon dioxide. In addition, in order to confirm that the drone 10 is flying on a predetermined route accurately at a predetermined time according to the flight plan information, position information based on the positioning information from the artificial satellite 30 may be acquired together.

  Steps S07 to S09 performed after step S06 are the same as the steps in the other embodiments described above.

  According to the method according to the fourth embodiment described above, the same effects as those of the methods according to the other embodiments described above can be obtained.

  As described above, the embodiments of the present invention have been described. However, the technical scope of the present invention is not limited to the above-described embodiments, and can be changed without departing from the functions and uses of each configuration. For example, the above-described carbon dioxide sensor 13 and data processing device 14 may be integrated as a carbon dioxide concentration measurement device that measures the concentration of carbon dioxide. In this case, in such a carbon dioxide concentration measuring device, the carbon dioxide concentration data may be obtained at the same time as the carbon dioxide concentration is measured. Also, some of the steps of the above method may be omitted. Further, some steps of the above embodiment may be replaced with steps of another embodiment.

H ... people
13. Carbon dioxide sensor
10 Drone 20 Controller 70 Mobile terminal

Claims (4)

A method for finding places of people who were buried alive by landslides and collapsed buildings,
For a drone including a receiving device for receiving a positioning signal and a plurality of propellers, the lower end of a central portion surrounded by the plurality of propellers for detecting and measuring carbon dioxide is provided in a vertical direction. a step of the carbon dioxide sensor is fixed to be,
A flight step of flying the near surface to fly the drone the carbon dioxide sensor is fixed to the affected areas,
In the flight step, together with the carbon dioxide sensor for detecting the carbon dioxide concentration to the extent that humans are breathing, a position of the drone when detecting the carbon dioxide positioning signal the receiving device receives and specifying, based on,
A step in which the mobile terminal receives position information on the position of the drone specified in the step, and displays the information on a display unit of the mobile terminal ,
A method comprising : Fixing the receiving device to the upper portion of the central portion , further comprising:
The flight step, transmits an operation signal from the controller to the drone method of claim 1, wherein the to flight the drone in accordance with the operation signal. The method according to claim 1, wherein the location information is transmitted to a plurality of the mobile terminals . Calculating the carbon dioxide concentration from the carbon dioxide detected by the drone,
Correlating the data of the carbon dioxide concentration and the position information, a step of creating carbon dioxide concentration data including data of the carbon dioxide concentration for each location of the disaster area,
Transmitting the carbon dioxide concentration data to the portable terminal, and displaying on the display unit a heat map that visualizes and expresses the strength of the carbon dioxide concentration data together with map or aerial photograph data;
The method according to any one of claims 1 to 3, further comprising:

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