Acquisition device and information collection system

Abstract

To provide a technology that can remotely acquire detection information in environments where at least one of power supply equipment and network equipment is not present or is vulnerable.SOLUTION: In an acquisition device 10, a power reception unit 12 receives power transmitted wirelessly from an unmanned mobile vehicle 30. A sensor 18 operates with power received by the power reception unit 12 and acquires detection information. A transmission unit 22 operates with power received by the power reception unit 12 and transmits data based on the detection information acquired by the sensor 18 to the unmanned mobile vehicle 30 wirelessly.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an acquisition device and an information collection system that acquires detection information from a sensor. [Background technology]

[0002] In recent years, water meters, gas meters, etc. have been replaced with smart meters, and meters can be read remotely. In recent years, it has been reported that the above-mentioned method is effective for preventing the spread of the disease (for example, see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2016 / 027612 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to use smart meters, power supply equipment and network equipment are required. However, in depopulated areas, in the mountains, in mines, etc., at least one of the power supply facilities and network facilities is Network facilities, whether wireless or wired, may be unavailable or vulnerable. It is a facility for connecting to a network such as the Internet.

[0005] The object of the present invention is to provide a system for controlling a power supply system in which at least one of a power supply facility and a network facility does not exist or is not provided. The purpose of the present invention is to provide a technology that can remotely obtain detection information in vulnerable environments. [Means for solving the problem]

[0006] In order to solve the above problems, an acquisition device according to an embodiment of the present invention is a device for acquiring information wirelessly transmitted from an unmanned vehicle. The power receiving unit receives the power transmitted from the power receiving unit, and the power receiving unit operates using the power received by the power receiving unit and acquires detection information. The power receiving unit operates using the power received by the sensor and detects the data based on the information acquired by the sensor. and a transmitting unit that wirelessly transmits the data to the unmanned moving body.

[0007] Another aspect of the present invention is an information collection system. The information collection system includes an acquisition device and The acquisition device receives power wirelessly transmitted from the unmanned mobile body. a power receiving unit that receives power from the power receiving unit, a sensor that operates using the power received by the power receiving unit and obtains detection information; It operates using received power and transmits data based on detection information acquired by sensors to unmanned vehicles. The unmanned mobile object has a power transmitting unit that transmits power wirelessly to the power receiving unit. and a receiving unit that receives the data transmitted from the transmitting unit.

[0008] Any combination of the above components and the expression of the present invention may be used as a method, an apparatus, a system, a recording medium, Conversions between the body, computer program, etc. are also valid aspects of the present invention. be. Effect of the Invention

[0009] According to the present invention, a power supply facility and / or a network facility are not present or can remotely obtain detection information in vulnerable environments. [Brief description of the drawings]

[0010] [Figure 1] 1 is a perspective view showing a schematic configuration of an information collecting system according to a first embodiment. [Diagram 2] FIG. 2 is a schematic top view of the meter of FIG. 1. [Diagram 3] FIG. 2 is a schematic side view of the acquisition device and meter of FIG. 1. [Figure 4]FIG. 2 is a diagram illustrating a functional configuration of the information collecting system of FIG. [Diagram 5] 2 is a flowchart showing the process of the acquisition device of FIG. 1. [Figure 6] FIG. 11 is a perspective view showing a schematic configuration of an information collecting system according to a second embodiment. [Figure 7] FIG. 7 is a schematic bottom view of the container of FIG. 6. [Figure 8] FIG. 7 is a schematic top view of the acquisition device of FIG. 6. [Figure 9] 7 is a perspective view showing a state in which a container in the information collection system of FIG. 6 is lowered and placed on an acquisition device. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] (First embodiment) FIG. 1 is a perspective view showing a schematic configuration of an information collecting system 1 according to the first embodiment. The information collection system 1 collects information on the amount of water usage from each of a plurality of water meters. The information collection system 1 includes an acquisition device 10 and an unmanned vehicle 30.

[0012] The acquisition device 10 is attached to a water meter 62 in advance. The acquisition device 10 is installed in each of the data acquisition devices 62, and the information collection system 1 includes a plurality of acquisition devices 10. 1 shows one of the multiple acquisition devices 10.

[0013] 2 is a schematic top view of the meter 62 of FIG. 1. The meter 62 is connected to the water pipe 60. The amount of water used is measured by a mechanical analyser, and the measured amount of water used is displayed on the display unit 64 in numerical form. It is a log meter.

[0014] FIG. 3 is a schematic side view of the acquisition device 10 and meter 62 of FIG. The meter 62 includes a housing 24 and a fixing member 28. The fixing member 28 is provided along the edge of the meter 62. The fixing member 28 may be any material, such as an adhesive, a pressure sensitive adhesive, etc. , a member fixed by a screw, etc. In this way, the existing meter 62 can be installed without replacing it. The acquisition device 10 is easily attached.

[0015] The acquisition device 10 is capable of capturing an image of the display unit 64 of the meter 62. 0 operates using power supplied from the unmanned vehicle 30.

[0016] The fixing member 28 substantially seals the space between the housing 24 and the meter 62. The display unit 64 of the meter 62 is less susceptible to water droplets and dirt, and the acquisition device 10 is attached to the meter 62. After installation, there is no need to clean the display unit 64 periodically, and the image on the display unit 64 can be captured clearly. can.

[0017] The meter 62 is a mechanical meter that measures the amount or flow rate of a fluid or gas. The meter may be a gas meter or the like, not limited to a water meter, and may be installed in a plant such as a factory. The meter 62 is not limited to a meter that directly displays a numerical value, but may be a meter that indicates It may also be one that indicates the numerical value using a needle.

[0018] Returning to FIG. 1, the unmanned moving body 30 is, for example, an unmanned flying body such as a drone. Depending on the location where the vehicle 10 is installed, the unmanned vehicle 30 may be an unmanned vehicle, a ship-type robot, or an underwater robot. The unmanned vehicle 30 may be a robot or the like. The unmanned vehicle 30 may be remotely controlled by a human operator via wireless communication. Alternatively, the vehicle may be autonomous, or a combination of both. The body 30 stores the position information of the multiple acquisition devices 10 in advance, and the stored position information and G The location information derived by the PS and surrounding images taken by a camera (not shown) are also used. Based on this, it moves autonomously using well-known technology.

[0019] When the unmanned mobile unit 30 reads a plurality of meters 62, the acquisition device of each meter 62 The robot moves to the location of each acquisition device 10 in order to collect information from each acquisition device 10. The unmanned vehicle 30 can also be called an information collecting device. The unmanned vehicle 30 approaches the target acquisition device 10. Or, the robot lands on the top surface 24a of the housing 24 of the acquisition device 10 and strikes the acquisition device 10. The acquisition device 10 uses wireless power supply to acquire the display 64 of the meter 62. The data of the amount of water used obtained from the image is received from the acquisition device 10, and the received data is stored. The unmanned vehicle 30 that has received the data takes off and moves toward the next acquisition device 10. do.

[0020] The acquisition device 10 has a mark 26 disposed on the top surface of the housing 24. The mark 26 is The purpose of this is to adjust the position of the human moving object 30 relative to the power receiving unit 12, and it may be of any shape. , for example, a square of several centimeters on each side.

[0021] When the unmanned vehicle 30 approaches or lands on the acquisition device 10, the acquisition device 10 acquires the image captured by the camera. The position of the device 10 relative to the power receiving unit 12 is adjusted based on the image of the mark 26. For example, The unmanned vehicle 30 derives the number of pixels and the position of the mark 26 in the captured image, and The distance to the acquisition device 10 is calculated based on the number of pixels, and the plane is calculated based on the position of the mark 26 in the image. This allows the positional relationship between the unmanned vehicle 30 and the power receiving unit 12 to be adjusted. The unmanned vehicle 30 can detect the location of the acquisition device 10 based on the mark 26 in the captured image. All that is required is to derive the distance, and information other than the number of pixels (image size), such as brightness, color, and blur shape, is also available. The distance may be derived using the information.

[0022] The unmanned vehicle 30 collects data from a predetermined number of acquisition devices 10 and then operates the vehicle. The aircraft moves to a designated location, such as a base where operators or workers are waiting. The operator or worker acquires the numerical data stored in the unmanned vehicle 30.

[0023] FIG. 4 shows a functional configuration of the information collecting system 1 shown in FIG. 1. The acquisition device 10 includes a power receiving unit 12, The vehicle includes a power storage unit 14, a power supply unit 16, a sensor 18, a CPU 20, and a transmission unit 22. The body 30 includes a control unit 32, a battery 34, a switch unit 36, a power transmission unit 38, a receiving unit 40, and a CP The unmanned vehicle 30 has a driving unit U42 and a memory unit 44. The battery 34 may be used both as a power supply battery for the information collection system 1 and as a power supply battery for the information collection system 1. Alternatively, the battery may be stored as a separate battery.

[0024] In the unmanned vehicle 30, the control unit 32 controls the motor (not shown) and the like using well-known technology. The battery 34 controls the drive of the control unit 32, the receiver 33, and the movement of the unmanned vehicle 30. The battery 34 supplies power to the power supply 40, the CPU 42, the memory unit 44, the motor, etc. When the switch 36 is in a conductive state, the battery 34 supplies power to the power transmission unit 38. When the switch unit 36 ​​is in a non-conductive state, the power supply to the power transmission unit 38 is cut off. 6 is, for example, an electronic switch, which is turned on or off according to the control of the CPU 42. The CPU 42 switches to the state when the unmanned vehicle 30 and the acquisition device 10 are in a predetermined positional relationship. When the switch 36 is turned on, or when the pilot gives an instruction by radio, do.

[0025] The power transmission unit 38 wirelessly transmits the power supplied from the battery 34. The standard for wireless power transmission is There is no particular limitation, and the device may be compliant with the Qi standard, for example. The distance between the power receiving unit 38 and the power receiving unit 12 and the positional deviation in the planar direction must be within a few centimeters. The human moving object 30 lands on the acquisition device 10 so that the power transmitting unit 38 and the power receiving unit 12 face each other. It is preferable to maintain the positional relationship between the power transmitting unit 38 and the power receiving unit 12 such that power can be transmitted. If possible, it is not necessary to land. The wireless power transmission method is electromagnetic induction, magnetic resonance, and electromagnetic waves. The electromagnetic wave radiation method may be, for example, microwave power supply.

[0026] In the acquisition device 10, the power receiving unit 12 receives the power wirelessly transmitted from the power transmitting unit 38. The power storage unit 14 is, for example, a capacitor or a battery. The power supply unit 16 stores the power supplied from the power receiving unit 12. When the power (Wh) stored in the power storage unit 14 reaches a predetermined threshold, the power storage unit 14 is The sensor 18, the CPU 20, and the transmission unit 22 are The power receiving unit 12 operates with the power received. The threshold value is set by the sensor 18, the CPU 20, and the transmission unit 22 to execute the series of processes described below. The power supply unit 16 can be configured to transmit power for a predetermined period of time (for example, The charging may be completed after the elapse of the time (1 minute). The power storage unit 14 executes a series of processes described below. The power supply unit 16 has a predetermined capacity (Wh) that can store electricity when the power storage unit 14 is fully charged. In this case, charging may be completed.

[0027] When power is supplied to the CPU 20, the CPU 20 starts up and transmits information indicating that charging is complete to the transmitting unit 22. The transmission unit 22 transmits information indicating the completion of charging to the unmanned vehicle 30. The communication standard is particularly Including but not limited to Bluetooth® or Bluetooth Low The standard may be a short-range wireless communication standard such as Bluetooth Low Energy (hereinafter referred to as BLE).

[0028] In the unmanned vehicle 30, the receiving unit 40 receives the information indicating the completion of charging transmitted from the transmitting unit 22. The CPU 42 receives the information indicating the completion of charging and outputs the information to the CPU 42. When power is supplied, the switch unit 36 ​​is controlled to a non-conductive state to stop power transmission. This can save electricity for Teri 34.

[0029] In the acquisition device 10, the CPU 20 starts up and starts the sensor 18, which is an image sensor. The sensor 18 is disposed opposite the display unit 64 of the meter 62. The sensor 18 acquires an image of the display section 64 of the meter 62 in response to an instruction from the CPU 20. The acquired image data is then supplied to the CPU 20. This image corresponds to the detection information.

[0030] The CPU 20 performs image analysis based on the image data supplied from the sensor 18, and outputs the meter The numerical value displayed on the display unit 64 of the number 62 is identified. The numerical value is identified by using a known technique. For example, the character recognition model may be generated by machine learning. In this case, the acquisition device 10 can also be called an edge AI (Artificial Intelligence) camera.

[0031] The CPU 20 causes the transmission unit 22 to transmit the specified numerical data. The numerical data of the measurement is accompanied by identification information to identify the meter62 that obtained the numerical value. The transmission unit 22 transmits the numerical data with the identification information attached to the unmanned vehicle 30. Since it transmits numerical data, it uses a low-power communication method such as BLE, which is suitable for small-volume data communication. reliability standards are available.

[0032] These processes of the CPU 20 are executed by a program that runs on the CPU 20. The CPU 20 corresponds to a processing unit.

[0033] In the unmanned vehicle 30, the receiving unit 40 receives the numerical data transmitted from the transmitting unit 22. The CPU 42 receives the numerical data output from the receiving unit 40. The numerical data is stored in the memory unit 44. These processes of the CPU 42 are performed on the CPU 42. This is performed by a program that operates

[0034] Next, the overall operation of the acquisition device 10 having the above configuration will be described. 1 is a flowchart showing the process of the acquisition device 10. This process is performed when the unmanned moving body 30 This is executed when it approaches 0 or lands and starts transmitting power.

[0035] The power receiving unit 12 starts receiving power wirelessly (S12). If power equal to or greater than a threshold is secured, If the power is equal to or greater than the threshold (S12, Y), the process returns to S12. The power supply unit 16 supplies power to the peripheral circuits such as the sensor 18 (S14). The unmanned vehicle 30 is notified of the completion of charging (S16), and the sensor 18 displays the An image is acquired (S18), and the CPU 20 starts to identify the value of the meter 62 in the image. (S20). If the identification is not completed (N in S22), return to S22. If the identification is completed, (Y in S22), the transmission unit 22 transmits the numerical data to the unmanned vehicle 30 (S24), and End the process.

[0036] According to this embodiment, the acquisition device 1 is powered by wireless transmission from the unmanned vehicle 30. 0 acquires an image of meter 62 and the numerical value indicated by meter 62 is derived from the image. is transmitted to the unmanned vehicle 30, so that at least one of the power supply equipment and the network equipment Meter 62 values ​​can be obtained remotely in non-existent or vulnerable environments.

[0037] In addition, since the acquisition device 10 can be attached to the existing meter 62, there is no need to replace the meter 62. It is not necessary to install a power supply system, and it can easily accommodate various meters. There is no need to install new network equipment. Therefore, the information collection system 1 is easy to introduce. The cost of the information collection system 1 can also be reduced.

[0038] In addition, even in depopulated areas where multiple meters 62 are scattered far apart, a person can read the meters every time. This reduces the time and labor required to go around the meters 62 and read the values, and also reduces costs. When reading the value of 62, some people may not read the decimal point, resulting in variation. Therefore, the accuracy of the data as a whole may be reduced. Since the accuracy of the values ​​obtained is constant, it is easy to improve the accuracy of the data as a whole.

[0039] As a comparative example, the value on the display of an existing water meter, etc. is measured by an unmanned mobile camera. Although a technology that can read the current is considered, the meter display is provided with a cover to prevent water droplets and dirt from getting on it. When the lid is closed, it is not easy for an unmanned vehicle to open it. If there is no water droplets or dirt, it may be difficult to read the values. In this embodiment, the display unit 64 of the meter 62 is covered by the housing 24 and the fixing member 28. Since water droplets and dirt are less likely to adhere to the display 64, it is easy to obtain accurate readings on the display 64.

[0040] (Second embodiment) In the second embodiment, the acquisition device 10 is attached to a buoy floating on the sea and collects hydrogen ions from seawater. The second embodiment differs from the first embodiment in that detection information such as the ON concentration (pH) is acquired. The following description will focus on the differences from the first embodiment.

[0041] FIG. 6 is a perspective view showing a schematic configuration of the information collection system 1 according to the second embodiment. The device 10 is mounted on a floating buoy 70 on the ocean. Sensors that detect information about the surrounding environment, such as pH sensors, salinity sensors, and temperature sensors. In the illustrated example, the sensor The sensor 18 is a sensor that acquires information about seawater. The sensor 18 is suspended from a housing 24 and positioned in the sea. In the case of the sensor 18 for detecting air temperature, humidity, wind speed, etc., it is located in the air. The acquisition device 10 is installed on each of the buoys 70. The information collection system 1 includes a plurality of acquisition devices. 6 shows one of the multiple acquisition devices 10.

[0042] The unmanned vehicle 30 moves to the position of each acquisition device 10 in order and acquires the image of each acquisition device. Information is collected from the device 10 .

[0043] The unmanned vehicle 30 includes a storage section 50 and a hanging member 52 in addition to the configuration of the first embodiment. and a lifting drive unit 54.

[0044] The housing 50 houses the power transmission unit 38. The hanging member 52 is a flexible wire or The lifting drive unit 54 is a rope-like member such as a chain or the like that suspends the storage unit 50. The storage section 50 is raised by winding up the hanging member 52, and the storage section 50 is raised by unwinding the hanging member 52. Although not shown, a cable for supplying power to the power transmission unit 38 in the storage unit 50 is inserted. The cable is connected to the body of the unmanned vehicle 30 along the hanging member 52 .

[0045] FIG. 7 is a schematic bottom view of the storage unit 50 of FIG. The lower surface 50a has three electromagnets 54a, 54b, and 54c arranged thereon. The electromagnets 54b and 54c are arranged around the power transmission unit 38 without overlapping the power transmission unit 38. The number of a, 54b, and 54c is not particularly limited, but it is preferable that the number is more than one. However, the cables for supplying power to the electromagnets 54a, 54b, and 54c are connected to the suspension member 5 2 is connected to the main body of the unmanned vehicle 30.

[0046] 8 is a schematic top view of the acquisition device 10 of FIG. The magnetic member 80 further includes three magnetic members 80a, 80b, and 80c, the number of which is equal to the number of magnetic members 54b, 54c. The members 80a, 80b, and 80c are arranged around the power receiving unit 12 without overlapping the power receiving unit 12. Each of the magnetic members 80a, 80b, and 80c is attached to the upper surface 24a of the acquisition device 10 in a receiving section 5. When the power transmission unit 38 and the power receiving unit 12 face each other, the electromagnets 54a, 54b, and 54c The electromagnet 54a is disposed in a position facing the corresponding one of the magnetic members 80a. The electromagnet 54b faces the magnetic member 80b, and the electromagnet 54c faces the magnetic member 8 The magnetic members 80a, 80b, and 80c are magnets or magnetic bodies.

[0047] FIG. 9 shows the information collection system 1 of FIG. 6 in which the container 50 is lowered and the acquisition device 10 is placed above the container 50. The CPU 42 of the unmanned vehicle 30 is attached to the unmanned vehicle 30. When the acquisition device 10 is in a predetermined positional relationship as shown in FIG. 6, or when the operator wirelessly When an instruction is received from the user, the lifting / lowering drive unit 54 is controlled to lower the storage unit 50 and the battery 34 Electric power is supplied to the electromagnets 54a, 54b, and 54c to generate magnetic force, and the storage unit 50 is obtained. Place it on the upper surface 24a of the device 10.

[0048] Magnetic attraction forces between the electromagnets 54a, 54b, and 54c and the magnetic members 80a, 80b, and 80c As a result, the electromagnet 54a and the magnetic member 80a are attracted to each other, and the electromagnet 54b and the magnetic member 8 0b is attracted, and the electromagnet 54c and the magnetic member 80c are easily attracted to each other. This makes it easier for the power transmitting unit 38 and the power receiving unit 12 to overlap accurately.

[0049] When the container 50 is placed on the upper surface 24a of the acquisition device 10 or when the operator When an instruction is received from the wireless device, the lifting drive unit 54 is stopped. It is preferable to stop the lift drive unit 54 in the lifted state.

[0050] The buoy 70 sways due to the influence of wind or waves, and the unmanned mobile body 30 is also affected by the wind. It is difficult for the human moving object 30 to land on the acquisition device 10. Even in such a case, The power transmitting unit 38 is controlled to receive power so that the positional relationship between the power transmitting unit 38 and the power receiving unit 12 is maintained in a positional relationship that allows power transmission. Since the power supply can be fixed to the unit 12 by overlapping it, the power supply can be stable. Even if at least one of them sways, the slack hanging member 52 and the magnetic attraction force will keep the feed. This can prevent the positional relationship between the power supply unit 38 and the power receiving unit 12 from changing.

[0051] Therefore, it is possible to remotely obtain environmental information at sea where there are no power supply facilities or network facilities. can be obtained.

[0052] When the unmanned vehicle 30 receives data from the acquisition device 10, the CPU 42 controls the electromagnet 54 The power supply to the receiving portions 54a, 54b, and 54c is stopped, and the lifting drive portion 54 is caused to lift the receiving portion 50.

[0053] The receiving unit 40 of the unmanned vehicle 30 may also be housed in the housing unit 50.

[0054] The present invention has been described above based on the embodiments. The embodiments are merely examples, and each of the structures The fact that various modifications are possible in the combination of components and each treatment process, and that such modifications It will be understood by those skilled in the art that such modifications are also within the scope of the present invention.

[0055] For example, in the first embodiment, the acquisition device 10 acquires numerical data based on an image, and The acquisition device 10 transmits the numerical data acquired by the sensor 18 to the unmanned vehicle 30. Identification information may be attached to the image data and transmitted to the unmanned vehicle 30. In this case, the image data The CPU 42 of the unmanned vehicle 30 may be a Numerical data may be obtained by performing image analysis while the moving object 30 is flying. After the mobile unit 30 arrives at a predetermined location such as a base, the image data is transferred to a computer. The computer may perform image analysis to obtain numerical data, or the computer may perform image analysis to obtain numerical data. The operator or worker may read the numerical values ​​from the multiple images displayed without analyzing the data. In the modified example, the processing of the CPU 20 of the acquisition device 10 can be simplified, and the cost of the acquisition device 10 can be reduced. can.

[0056] In the first embodiment, the sensor 18 does not capture an image of the meter 62, but instead uses existing mechanical The sensor 18 is incorporated into the meter 62 by modifying or replacing the meter 62 of the sensor The acquisition device 18 may directly acquire the value of the meter 62 as the detected information. This can improve the degree of freedom in the configuration of the acquisition device 10. It can also simplify the processing of the CPU 20 of the acquisition device 10. can.

[0057] In the first embodiment, the unmanned vehicle 30 of the second embodiment may be used. In the modified example, even if the unmanned moving body 30 cannot land on the acquisition device 10 due to the influence of the wind, , and can supply power stably.

[0058] In the first embodiment, the sensor 18 is replaced with an image sensor. A temperature sensor, a humidity sensor, or the like that detects environmental information around the device may also be used. The sensor 10 may be installed at a meteorological observation point where a Stevenson screen or the like is installed. In an environment where at least one of the power supply equipment and the network equipment does not exist or is weak ,Environmental information can be obtained remotely.

[0059] The power transmitting unit 38 and the power receiving unit 12 can transmit data over a longer distance than the Qi standard by using microwaves or the like. If the unmanned vehicle 30 is configured to be able to supply power within a distance of about several meters, Power transmission and data reception may be performed when the user approaches the acquisition device 10 within a certain distance. In this case, the unmanned mobile body 30 of the first embodiment may be used in the second embodiment as well. In this modified example, landing of the unmanned vehicle 30 and highly accurate position control are not required, so that the vehicle can be launched in a shorter time. Data can be collected between [Explanation of symbols]

[0060] 1... information collection system, 10... acquisition device, 12... power receiving unit, 18... sensor, 22... transmission unit, 24... housing, 26... mark, 28... fixing member, 30... unmanned mobile body, 38... power transmission unit, 40... Receiving unit, 50...accommodating unit, 50a...lower surface, 52...member, 54a, 54b, 54c...electromagnets, 62: meter; 64: display unit; 80a, 80b, 80c: magnetic members.

Claims

1. A sensor for acquiring detection information; a transmission unit that wirelessly transmits data based on the detection information acquired by the sensor to the unmanned moving object; a housing that houses the sensor and the transmitter; a fixing member for fixing the housing to the meter, The sensor is an image sensor that acquires an image of a display portion of the meter as the detection information. An acquisition device comprising:

2. An acquisition device, a power receiving unit that receives power wirelessly transmitted from the unmanned moving body; The unmanned moving body includes a power transmission unit that wirelessly transmits power, a housing unit that houses the power transmission unit, an electromagnet disposed on a lower surface of the housing unit, and a hanging member that hangs the housing unit, The acquisition device includes: a magnetic member disposed at a position facing the electromagnet when the power transmitting unit and the power receiving unit face each other, An acquisition device comprising:

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