On-water floating device

Abstract

To provide an on-water floating device capable of supplying power to the movable body moving in the air, on water, and underwater while avoiding the damage due to contact.SOLUTION: An on-water floating device supplies the generated power by solar cells 2 to a water surface drone 8 via a magnetic field resonance feeding plate 7a and a power receiving plate 9 of a ship side magnetic field resonance type in a non-contact state with a float 1a as the water surface drone 8 approaches a buoy 1. This results in that the power can be supplied to the water surface drone 8 moving over the water while avoiding the damage due to contact.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a floating water device that floats on the water, such as a navigational beacon installed in a harbor or the like, and supplies power to an approaching mobile object. [Background technology]

[0002] BACKGROUND ART Conventionally, marine buoys (floating devices on water) described in Patent Document 1 are known as navigational aids installed in ports and harbors, for example. This system stores electricity generated by solar cells, wave power generators, etc. in a battery and uses this electricity to power the sign's lights, etc., allowing the sign to continuously emit light regardless of weather conditions. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-237823 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in recent years, there has been a growing need to continuously monitor the ocean surface over a wide area using electric drones and other devices. On the other hand, aerial drones (unmanned aerial vehicles) flying through the air must return to a charging station on land for charging every few minutes or hours due to weight restrictions on the batteries they carry, which poses the challenge of not being able to conduct long-term surveillance flights.

[0005] Therefore, as a result of intensive research, the inventors have discovered that the above-mentioned problems can be solved by using an underwater floating body device that floats on the water as a power supply station that supplies power to moving bodies that move in the air, on the water surface, or underwater. Furthermore, when power is supplied, there is a risk that the moving body may come into contact with the water-borne floating body device, causing damage to each other. Therefore, it was discovered that a non-contact method of power supply to the moving body would be sufficient, and this led to the completion of this invention.

[0006] The present invention has been made in consideration of these problems, and aims to provide an underwater floating device that can supply power to moving bodies moving in the air, on the water, or underwater while avoiding damage due to contact. [Means for solving the problem]

[0007] The invention described in claim 1 is a water floating body device characterized by comprising a floating body that floats on the water surface, a solar cell provided on the floating body, and a non-contact power supply unit that supplies power to a moving body close to the floating body.

[0008] The location of the water-based floating device is arbitrary. For example, it may be the sea, a river, a lake, etc. The type of floating body itself is arbitrary. For example, it may be a water sign that floats on the water surface, a floating wind power generation device, a fish pen, etc. Alternatively, it may be a water landing type aerial drone that is in a water-based landing state. The type of solar cell is not limited, and for example, various silicon solar cells, various compound solar cells, various organic solar cells, perovskite solar cells, quantum dot solar cells, etc. can be used.

[0009] Among these, silicon-based solar cells include single-crystal silicon type, polycrystalline silicon type, microcrystalline silicon type, amorphous silicon type, thin-film silicon type, hybrid type (HIT type), multi-junction type (tandem type), spherical silicon type, and field-effect type. Compound solar cells include InGaAs solar cells, GaAs solar cells, CIS (chalcopyrite) solar cells, CIGS solar cells, CZTS (Cu2ZnSnS4) solar cells, and CdTe / CdS solar cells. Examples of organic solar cells include dye-sensitized solar cells and organic thin-film solar cells.

[0010] The type of moving object is arbitrary, and for example, various types of aircraft, ships, submarines, etc. may be used. There are no limitations on the type of contactless power supply unit. For example, it is possible to use an electromagnetic induction method (conventional type) that sends power from a primary coil to a secondary coil through magnetic flux, an electromagnetic induction method (magnetic resonance type) that uses two coils with a resonant frequency to transmit power by utilizing resonance, an electric field coupling method that uses electrostatic capacitive coupling to excite voltage by an electric field, an electromagnetic wave method (microwave) that transmits energy wirelessly via microwaves, or an electromagnetic wave method (laser) that transmits energy using a laser.

[0011] The invention described in claim 2 is the above-water floating device described in claim 1, characterized in that the floating body is one of an underwater marker that displays navigational markers on ships, a floating wind power generation device that floats on the water surface to generate wind power, or an aquatic pond that floats on the water surface to cultivate aquatic plants and animals.

[0012] Furthermore, the invention described in claim 3 is a powered waterborne floating body device described in claim 1 or claim 2, characterized in that the moving body is either an electric waterborne drone (autonomous driving ship robot), an aerial drone (unmanned aerial vehicle), or an underwater drone (small unmanned submersible).

[0013] Furthermore, the invention described in claim 4 is the water floating body device described in claim 1 or claim 2, characterized in that the solar cell is a cylindrical object erected on the floating body main body.

[0014] The invention described in claim 5 is a water floating body device described in claim 4, characterized in that the solar cells include inner solar cells arranged around the inner surface of a cylindrical plate erected on the floating body body, and outer solar cells arranged around the outer surface of the cylindrical plate.

[0015] The invention described in claim 6 is a water floating body device described in claim 1 or claim 2, characterized in that the mobile body is an electric aerial drone and the solar cell is provided at the top of the floating body main body.

[0016] The invention described in claim 7 is the water floating body device described in claim 1 or claim 2, characterized in that the non-contact power supply unit is provided around the outer circumferential surface of the floating body main body. The non-contact power supply unit may be provided over the entire outer circumferential surface of the floating body body, or over a part of it.

[0017] The invention described in claim 8 is a water floating device described in claim 1, characterized in that it comprises an underwater marking unit that displays navigational markers to ships, a solar power generation system having the solar cell, an underwater environment measurement system having an underwater environment measurement unit that measures the underwater environment, and a communication system. [Effects of the Invention]

[0018] According to the invention described in claim 1, when a moving body approaches the floating body from the sky, above the water, or underwater, electricity generated by the solar cells of the floating body is supplied to the moving body in a non-contact manner via the non-contact power supply unit. This makes it possible to supply power to moving objects in the air, on water, or underwater while avoiding damage due to contact.

[0019] In particular, according to the invention described in claim 3, when an electric aerial drone, an electric surface drone, or an electric underwater drone approaches the floating body, electricity generated by the solar cell is supplied to the corresponding drone in a non-contact manner via the non-contact power supply unit. This will enable drones to travel long distances using a floating device on the water surface as a charging station.

[0020] According to the invention described in claim 4, cylindrical objects erected on the floating body are used as solar cells. For example, by placing cylindrical solar cells on the supports of the floating body, sunlight is constantly irradiated during the day, making it possible to generate a large amount of electricity using solar cells. Furthermore, cylindrical solar cells are less affected by wind pressure than flat solar cells, so the floating body sways less on the water.

[0021] According to the invention described in claim 5, inner solar cells are provided around the inner surface of a cylindrical plate erected on the floating body, and outer solar cells are provided around the outer surface of the cylindrical plate. Therefore, it is possible to obtain higher electric power by utilizing both the inner peripheral solar cells and the outer peripheral solar cells.

[0022] Furthermore, according to the invention described in claim 6, a solar cell is provided at the top of the floating body where there are generally fewer obstacles around, so that aerial drones that land on this top or are hovering can be safely powered in a non-contact manner.

[0023] Furthermore, according to the invention described in claim 7, the non-contact power supply unit is provided around the outer peripheral surface of the floating body, so that non-contact power supply can be performed regardless of the direction from which the moving body approaches the floating body.

[0024] According to the invention of claim 8, the underwater environment measuring system includes an underwater beacon unit, a solar power generation system, an underwater environment measuring system having an underwater environment measuring unit, and a communication system. This allows the floating device to function not only as a power supply station, but also as a network relay center for wide-area monitoring. [Brief explanation of the drawings]

[0025] [Figure 1] FIG. 2 is a front view showing the power supply state of the water floating device according to the first embodiment of the present invention to the water drone. [Figure 2] 1 is a block diagram showing a power supply system of an underwater floating body device according to a first embodiment of the present invention. [Figure 3] 1 is a schematic plan view showing a power supply state to an underwater drone of the underwater floating body device according to Example 1 of the present invention. FIG. [Figure 4] FIG. 10 is a schematic plan view showing another form of the water floating body device according to Example 1 of the present invention, which has a hexagonal floating body main body and shows the state of power supply to the water drone. [Figure 5] FIG. 10 is a schematic plan view of another form of the water floating body device according to the first embodiment of the present invention, in which solar cells are arranged in a square and a circle when viewed from above. [Figure 6] FIG. 10 is a front view including a partial vertical cross-sectional view of yet another form of the water floating body device according to the first embodiment of the present invention, which has solar cells with an inner and outer double cylindrical structure. [Figure 7] FIG. 10 is a front view including a partial vertical cross section showing yet another form of the water floating body device according to the first embodiment of the present invention, in which a non-contact power supply unit is provided on the top of the device. [Figure 8] FIG. 1 is an enlarged front view of a water landing type aerial drone used in a water floating device according to a first embodiment of the present invention. [Figure 9] FIG. 1 is a front view showing the power supply state from the water floating device according to Example 1 of the present invention to a water landing type aerial drone. [Figure 10] FIG. 9 is a schematic front view showing the state in which the water landing type aerial drone shown in FIG. 8 is used to supply power to an underwater drone. [Figure 11] FIG. 10 is a block diagram of a marine marker system using a waterborne floating device according to a second embodiment of the present invention. [Figure 12] FIG. 10 is a block diagram of a solar cell system using an underwater floating body device according to a second embodiment of the present invention. [Figure 13] FIG. 10 is a configuration diagram of an entire system including a marine marking system using a waterborne floating device according to a second embodiment of the present invention and other systems. [Figure 14] FIG. 10 is a perspective view showing a state in which the water floating body device according to the third embodiment of the present invention is in use. DETAILED DESCRIPTION OF THE INVENTION

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings. [Example]

[0027] In Fig. 1, a buoy (floating device) 1 is floating on the sea surface 11. The buoy 1 is equipped with a float (floating body) 1a that has the buoyancy to keep the buoy 1 afloat, a solar cell 2 on the top surface of the float 1a, a support 3 for attaching a navigational marker 4, the navigational marker 4 for informing an electric surface drone (ship) 8 or the like sailing near the buoy 1 of the position of the buoy 1, and an antenna 5 for communicating with a base station, drone, surface drone 8, etc. (not shown).

[0028] A power supply plate fixing plate 7 is fixed to the float 1a by a connecting arm 6. A magnetic resonance type power supply plate (non-contact power supply unit) 7a is installed on the power supply plate fixing plate 7 to supply power to a surface drone 8 and an aerial drone (described later) that can land on the water surface.

[0029] An underwater pole 1b equipped with built-in sensors for measuring water temperature, BOD, tide level, etc. is fixed to the underside of the float 1a. The bottom of the underwater pole 1b is connected to an anchor 1d installed on the seabed 10 by a fixing cable 1c or chain (rope) 1e to prevent the buoy 1 from being carried away by the water current. Of these, the fixing cable 1c is fastened to the underwater pole 1b itself with an elastic fastener so as to prevent damage to the sensors attached to the underwater pole 1b or the power cables and communication cables arranged on the surface of the underwater pole 1b due to water currents, etc.

[0030] The magnetic field resonance type power supply plate 7a is a plate-shaped terminal for supplying power to the surface drone 8 and other drones described later, and is provided with a resonance coil. It also contains an element that functions as a capacitor to form a resonance circuit. The power supply coil is waterproof against seawater, freshwater, and the like.

[0031] One way to power the surface drone 8 or other drones at sea is to use a wired power supply device with a connector, but there is a high possibility that charging problems will occur due to corrosion of the connector metal caused by salt water, etc. Therefore, a waterproof, contactless power supply device whose power supply part will not corrode even when exposed to seawater, etc., is more suitable.

[0032] There are several types of contactless power supply devices, including the electromagnetic induction type used in transformers, the magnetic field resonance type, the electric field coupling type using a capacitor, and the radio wave reception type that uses microwaves as a medium. At sea, the buoy 1 is constantly swaying due to the wind and waves. For this reason, it is important to be able to supply stable power even if the relative positions and distances between the power supply plate and the power receiving plate are slightly off. The magnetic field resonance type is the most suitable contactless power supply method for this purpose.

[0033] The magnetic resonance method is capable of supplying power even when the transmission distance is several meters, and can also supply power in bad weather when the sea is rough. The outer diameter of the float 1a is generally about 1.5 to 3 meters so as not to interfere with ships sailing through the water, and if solar cells were installed on the horizontal surface of the float 1a, they would not be able to provide the necessary power for power supply. For this reason, cylindrical solar cells 2 are installed on the top surface of the float 1a to increase the area that receives sunlight. This ensures power for both functioning as a navigational aid and for supplying power to the surface drone 8 and other drones.

[0034] The buoy 1 is equipped with a battery that stores the electricity generated by the solar cell 2, and an AC converter for powering the surface drone 8 and other drones. Figure 1 shows a schematic diagram of power being supplied to a surface drone 8. The surface drone 8 is positioned parallel to a ship-side magnetic resonance type power receiving plate (non-contact power supply unit) 9, while maintaining a certain distance from the magnetic resonance type power supply plate 7a installed on the buoy 1.

[0035] The position of the surface drone 8 is controlled so that the relative distance between the power supply and receiving plates 7a, 9 is maintained at a distance of several centimeters to several tens of centimeters. In this state, when an AC current corresponding to the resonant frequency is applied to the magnetic field resonance type power supply plate 7a on the buoy 1 side, a resonant current is generated in the ship-side magnetic field resonance type power receiving plate 9, which has the same resonant frequency characteristics, and the resonant current is supplied to the ship side as power.

[0036] In FIG. 2, the area surrounded by the two-dot chain line indicates the configuration of the main equipment built into the buoy-side power supply device 49 and the ship / drone-side power receiving device 50. The power generated by the solar cell 2 installed on the buoy 1 is stored in the battery 51. The power stored in the battery 51 is converted into AC by the AC converter 52, and is then converted into a required resonant frequency by the power supply device 53, and is supplied to the power supply side resonant coil 55 as a resonant current 54.

[0037] A capacitor 56 for generating a resonant frequency is formed on the power circuit of the supply-side resonant coil 55. The ship / drone-side receiving device 50 is equipped with a power-receiving-side resonant coil 58 having the same resonance characteristics as the power-supply-side resonant coil 55, and a capacitor 56 for generating a resonant frequency is formed on the circuit.

[0038] When a resonant current 54 is supplied to the power supplying resonant coil 55, the power supplying resonant coil 55 enters a resonant state, generating strong magnetic field resonance. At this time, a resonant current 59 is induced by the magnetic field resonance in the power receiving resonant coil 58, which has the same resonance characteristics. The magnetic field resonance generated by the resonant coils 55, 58 has a stronger magnetic field strength per area than the magnetic field generated by normal electromagnetic induction, so it is possible to induce power in the other resonant coil 58 even if there is a distance between the resonant coils 55, 58. The ship / drone side power receiving device 50 has a built-in system that rectifies the received resonant current 59 using a rectifier 60 and charges a battery 62 using a charger 61.

[0039] Figure 3 shows the relative positions of the float 1a, the magnetic field resonance type power supply plate 7a, the connecting arm 6 supporting the magnetic field resonance type power supply plate 7a, the surface drone 8 to be powered, and the ship-side magnetic field resonance type power receiving plate 9 installed on the surface drone 8, as viewed from above the buoy 1.

[0040] The power supply plate fixing plate 7 is firmly held by a connecting arm 6 on the side of the buoy 1. A cable for supplying AC current to the resonance coil 55 of the magnetic field resonance type power supply plate 7a is built into the connecting arm 6. The built-in cable is a shielded cable whose outer periphery is electrically shielded, and is designed to suppress the generation of electromagnetic noise to the outside.

[0041] When supplying power to the surface drone 8, the magnetic resonance type power supply plate 7a and the ship-side magnetic resonance type power receiving plate 9 supply power while maintaining a constant distance, as shown in Figure 3. In rough weather, etc., it is difficult to accurately maintain the distance between the power supply plate 7a and the power receiving plate 9 due to the action of ocean waves, so although not shown in the figure, a mechanism is built in that measures the distance using a distance sensor built into the power supply plate fixing plate 7 and changes the current flowing through the resonance coil 55 of the magnetic resonance type power supply plate 7a depending on the distance, so that power can always be supplied within a predetermined range.

[0042] FIG. 4 shows a case where a polygonal flat plate is installed on the outer periphery of the float 1a, and magnetic field resonance type power supply plates 7a are installed on the respective planes of the polygon. The surface drone 8 receives power from one of the magnetic resonance type power supply plates 7a installed on a polygonal flat plate. At sea, due to the effects of waves, wind, and currents, it is difficult to keep the buoy 1 facing in a fixed direction at all times, so placing the power supply plate 7a on a polygonal flat plate has the advantage of making it easier to secure the position of the surface drone 8 when powering. Another advantage is that, depending on the size of the surface drone 8, it is easier to power multiple surface drones 8 simultaneously.

[0043] In Fig. 5, the left diagram shows a case where flat solar cells 12 are arranged on a float 1a leaning around a support 3. The right diagram shows a case where cylindrical solar cells 13 are arranged concentrically with the support 3 on a flute 1a. The cylindrical solar cell 13 shown on the right has the advantage that the amount of power generated varies little because the light-receiving area of ​​the solar cell 13 remains the same even if the sunlight 16 at sunrise and sunlight 16a at sunset, shown by the dashed lines, change over time.

[0044] When the flat solar cell 12 is hit head-on by the wind as shown in the figure, the force F15 due to wind pressure 14 has a larger drag coefficient than the cylindrical solar cell 13 shown on the right (the same applies to solar cell 2 in Figure 1), so a larger force acts even at the same wind speed. If the force F15 due to wind pressure 14 is large, the swing angle of the top of the support pole 3 becomes large, which is undesirable as it causes the navigation light as a navigation aid to swing. Therefore, the cylindrical solar cell 13 is more suitable.

[0045] FIG. 6 shows one means for maximizing the power generation capacity of the solar cells installed on the float 1 a of the buoy 1 . In Figure 6, a cylindrical plate 2d with drain holes 2c is installed on a float 1a. Inside solar cells 2b with a cylindrical curved surface are attached to the entire surface of the cylindrical plate 2d. Outside solar cells 2a with a cylindrical curved surface are attached to the entire surface of the outside.

[0046] A support solar cell 3a with a cylindrical curved surface is attached to the entire circumference of the support pole 3 attached to the center of the float 1a. When sunlight is irradiated onto the buoy 1 at an incidence angle A, the sunlight indicated by the dashed dotted line is irradiated onto the outer solar cell 2a, the inner solar cell 2b, and the support solar cell 3a, respectively, and electricity is generated in each of the solar cells 2a, 2b, and 3a. Although it depends on the sunlight incidence angle, when compared with the same float diameter D, it is possible to generate approximately twice the amount of electricity as the solar cell 2 with the structure of Example 1 shown in Figure 1, making it possible to charge a large amount of electricity into the battery built into the buoy 1.

[0047] FIG. 7 shows a case where a power supply device is provided above the antenna 5a. In FIG. 7, a power supply device is attached to the top of the antenna 5a, which is an inverted cone-shaped structure with an aerial drone power supply plate 7b attached to the top surface of the structure. The power supply plate 7b is a magnetic field resonance type power supply plate 7a, which allows an aerial drone 17 flying in the air to land on the aerial drone power supply plate 7b to be powered, or to be powered while floating in the air (see Figure 8).

[0048] Although not shown, a magnetic field resonance type power receiving plate 7a is attached to the underside of the aerial drone 17, allowing it to receive power while it is landed or floating in the air. When the buoy 1 sways due to strong winds or other factors, it is difficult for the aerial drone 17 to land, so power is supplied while it is hovering in the air. The magnetic resonance power supply method is suitable because it can supply power over a distance of several tens of centimeters to several meters. When the buoy 1 sways, the magnetic resonance power receiving plate 7a also sways, so the aerial drone 17 receiving power controls its flight left and right in synchronization with the swaying of the buoy 1. This makes it possible to supply power to the aerial drone 17 flying in the air even in rough weather.

[0049] Figure 8 shows the structure of a sea landing drone. 8, the aerial drone 17 is composed of a drone-side float 18 for ensuring its own buoyancy when landing on the sea, a main body 17c incorporating a control device for controlling power and attitude, a battery, etc., a propeller 17b for flying in the air, and an electric motor 17a for driving the propeller 17b. A magnetic resonance type power receiving plate (non-contact power supply unit) 19 is attached to the side of the drone-side float 18. The drone-side float 18 is held to the main body 17c by a long connecting arm 17e.

[0050] A cable is laid inside the connecting arm 17e to store the power received from the magnetic resonance type power receiving plate 19 in the battery of the main body 17c. A descending sensor for underwater measurement and the like are housed in the lower part of the main body 17c.

[0051] When landing on the sea, the aerial drone 17 receives power stored in the buoy 1 via the magnetic resonance type power receiving plate 19. This eliminates the need to return to land within the flight time limit to charge the onboard battery, and makes it possible to receive the power required for flight directly from the buoy 1 floating offshore. As a result, it is possible to save battery power that was previously consumed for round trips between land and the observation point, and it becomes possible for the drone to fly in the monitoring area for a long period of time. In addition, reference numeral 17d in FIG. 8 denotes a load supported on the lower part of the main body 17c.

[0052] Figure 9 shows the case of powering an aerial drone. In Figure 9, a magnetic resonance type power supply plate 7a is installed on the buoy 1 to supply power to a water-landing aerial drone 17, and a magnetic resonance type power receiving plate 19 is attached to the side of the drone-side float 18 of the surface drone 8. When the drone-side float 18 of the aerial drone 17 approaches within a preset distance from the magnetic resonance type power supply plate 7a, a signal (not shown) transmitted from the aerial drone 17 is detected, indicating that the aerial drone 17 is the target to be powered, and power supply from the magnetic resonance type power supply plate 7a begins. The power supply current is controlled so that an optimal charging state is maintained according to the distance and swing state between the magnetic resonance type power supply plate 7a and the magnetic resonance type power receiving plate 19.

[0053] Because the water landing type aerial drone 17 has a larger vertical swing compared to the buoy 1 due to its weight, the height of the drone-side float 18 is adjusted so that the magnetic resonance type power receiving plate 19 does not deviate from the range where the power supply plate 7 is installed, even if there is a swing. When charging of the aerial drone 17 is complete, a charging completion signal is sent from the aerial drone 17 to the buoy 1, and the charging process is completed. The charging process is performed in the same way for the surface drone 8.

[0054] In FIG. 10, a measurement and communication device 45 is suspended from the bottom of a hovering aerial drone 17 by a cable 44 and submerged in the sea. Although not shown, the measurement and communication device 45 has a magnetic resonance type power supply plate attached to its outer periphery for supplying power to the underwater drone 47 . An underwater drone 47 that moves underwater is located near the measurement and communication device 45. The underwater drone 47 has a built-in underwater drone communication device 47a for mutual communication with the measurement and communication device 45. In addition, although not shown, a magnetic resonance type power receiving plate is provided for supplying power from the measurement and communication device 45.

[0055] In order for the underwater drone 47 to move underwater for a long period of time, it needs to be equipped with a large-capacity battery. However, if a power supply battery is installed in the aerial drone 17 that flies in the air and powers the underwater drone 47 after it arrives at a designated sea area, the underwater drone 47 does not need to be equipped with a large battery, making it possible to make it smaller and more economical.

[0056] In addition, various measurement data measured by the underwater drone 47 is transmitted to the measurement and communication device 45 by the drone communication device 47a, and is then transmitted in a timely manner from the communication antenna 46 of the aerial drone 17 floating in the air to a base station on land. The underwater drone communication device 47a of the underwater drone 47 is equipped with an ultrasonic communication device suitable for communication underwater.

[0057] The underwater drone 47 equipped with a power receiving device waits in a predetermined sea area where power receiving work will be performed, communicates with the measurement and communication device 45 for confirmation, and performs charging and data communication work in proximity to the measurement and communication device 45. This eliminates the need for the underwater drone 47 to travel back and forth to a predetermined point to charge the battery, making it possible to perform measurements underwater for long periods of time.

[0058] Next, a marine marking system using a waterborne floating device according to a second embodiment of the present invention will be described with reference to FIGS. In Figure 11, the marine marking system 20 includes a navigational aid section (surface marking section) 21, a solar power generation system 22, a marine environment measurement system 23, a marine monitoring system 23a that monitors the sea area using data obtained from the marine environment measurement system 23 and other systems, a drone / ship power supply system 24, and a communication system 25.

[0059] The navigational aid unit 21 is provided with a light for informing ships passing by the marine beacon of its location and a control device for controlling the illumination of the light. The solar power generation system 22 is provided with a circuit for charging a battery with electricity generated by a solar cell installed on the buoy 1. The battery is a small, waterproof lithium-ion secondary battery with a large charging capacity. The lithium-ion secondary battery is capable of high-speed charging and discharging, and has a built-in charging and discharging system that can supply a current larger than the normal charging current when powering drones such as drones 8, 17, and 27 in a short period of time.

[0060] The marine environment measurement system 23 is equipped with cameras and measuring instruments for measuring the outside air temperature, wind speed, and air pressure as well as the water temperature, salinity, BOD concentration, current speed, and wave height, as needed, and has the ability to measure required data continuously or at predetermined time intervals. Based on this data, the ocean monitoring system 23a monitors, for example, the approach of schools of fish and the occurrence of red tides.

[0061] Furthermore, in the management of fish ponds, etc., described below, water temperature, BOD concentration, and oxygen concentration in the water are important for the daily management of fish growth environments. The drone / vessel power supply system 24 is equipped with a function to supply power to the surface drone 8, aerial drone 17, and underwater drone 47 from the magnetic resonance type power supply plate 7a, although not shown. It also has a sensor to confirm that these drones 8, 17, and 27 are power targets, and is equipped with a mutual communication function with the powered target to start power supply and stop power supply when the drone is fully charged.

[0062] In addition to the communication function for controlling the systems 21, 22, 23, 23a, and 24, the communication system 25 is also provided with a function for mutual communication with base stations on land, etc., and with the navigating surface drone 8, aerial drone 17, and underwater drone 47. This allows the system to function not only as a power supply station but also as a network relay center for wide-area monitoring.

[0063] 12, the solar power generation system 20 installed on the buoy 1 has separate power systems for the solar cell 26a for the marker and the solar cell 26 for charging the drones 8, 17, 27, etc. Because the marker lights must be on at all times even in bad weather, the power system is separate and a battery with ample capacity is added to prevent a power shortage for the marker lights in the event of an unforeseen event.

[0064] A dedicated charge control device 27a is connected to the beacon solar cell 26a, and controls the current when charging the navigational marker light battery 28. The navigational marker light battery 28 stores enough power to light the lights of the navigational marker unit 21 even when it rains continuously for about a week and there is no sunshine. A charging terminal is attached so that the battery can be charged from an external source when the remaining amount of stored power becomes low.

[0065] A navigational aid light control device is connected to the battery for the navigational aid light, and controls the illumination intensity, flashing, and fault detection of the navigational aid light 30. Electricity for charging drones 8, 17, 27, etc. is generated by solar cells 26, and is charged via a charge / discharge control device 27 into a marine environment data measurement battery 35 and a drone / ship charging battery 31, respectively.

[0066] The measurement scanner 36 controls the measurements of the various measurement sensors connected thereto, and transmits the measurement data to an external base station or the like via a communication device 37 . A charging target detection device 32 is connected to a charging battery 31 for drones, ships, etc., to detect whether or not the object is a charging target when power is supplied. Power is supplied to the charging target 34 from the magnetic field resonance type power supply plate 7a via a power supply control device 33.

[0067] Next, with reference to FIG. 13, an overall drone power supply system including the marine marking system according to the second embodiment of the present invention and other systems will be described. 13, a floating wind power generation facility 41 floats on the ocean surface in the same way as a buoy 1, and is moored to the seabed with an anchor or the like. A power supply device 41a having a magnetic resonance type power supply plate is provided on the pillar of the floating wind power generation facility 41, and like the buoy 1, it is possible to supply power to an inspection aerial drone 17 and the like. This means that workers can visually monitor and inspect the floating wind power generation facility 41 using a remote drone from the coast when necessary, without having to land directly on the facility.

[0068] In addition, by installing a power supply device 42a at a pier 42 or the like located on the coast, an aerial drone 17 in flight can be powered by the nearest power supply station, making it possible to fly multiple aerial drones 17 simultaneously and monitor a wide area. Other configurations, actions, and effects can be inferred from the first embodiment, and therefore will not be described here.

[0069] Next, a water floating device according to a third embodiment of the present invention will be described with reference to FIG. In Figure 14, the fish pen (floating device) 63 of Example 3 includes a net 63a for cultivating farmed fish 64, a floating board 65 floating on the water surface to hold the net 63a, a solar cell 66 installed on the upper surface of the floating board 65, a pier 67 connected to the floating board 65, a power supply device 68 for an aerial drone installed on the pier 67, and a power supply device 69 for an underwater drone.

[0070] The floating board 65 is made of a flexible material so that it can follow the waves on the water surface, and is made up of many fan-shaped sectors connected together so that they can swing. The solar cell 66 is a thin-film solar cell such as a flexible perovskite solar cell. The surface of this solar cell is tightly sealed with a transparent waterproof sheet to prevent corrosion of the solar cell even in salt water. The protection sheet is strong enough that it will not be damaged even if workers walk over it, allowing the floating board 65, which is normally used for work purposes, to function as a power generation facility.

[0071] The power generated by the solar cell 66 is charged into a battery built into the pier 67. The charged power is supplied to the required drones 8 and 17 via a magnetic resonance type power supply plate, as in the first embodiment, via an aerial drone power supply device 68 and a surface drone power supply device 69, both of which are installed at the other end of the pier 67. The main tasks in farming fish 64 are monitoring the health of the fish and feeding them, but by remotely monitoring the health of the fish from the air using an aerial drone 17 and using a surface drone 8 for feeding, most of the work can be automated without humans having to go to the fish pens each time, which has great economic benefits. Other configurations, actions, and effects can be inferred from the first and second embodiments, and therefore will not be described here. [Explanation of symbols]

[0072] 1. Buoy (floating device) 1a Float (floating body) 1b Underwater pole 1c fixed cable 1d anchor 1e Chain (Rope) 2. Solar cells 2a Outer solar cell 2b Inner solar cell 2c Drain hole 2d Circumferential Plate 3 pillars 3a solar cell for pole 4 Navigation aids 5 Antennas 5a Antenna 6 Connecting Arm 7 Power supply plate fixing plate 7a Magnetic resonance type power supply plate 7b Power supply plate for aerial drones 8. Water Drone 9. Ship-side magnetic resonance type power receiving plate 10 Undersea 11 sea level 12 Flat solar cell 13 Cylindrical solar cell 14 Wind direction 15 Wind pressure force F 16 Sunrise sunlight 16a Sunlight at sunset 17. Aerial Drones 17a Electric motor 17b Propeller 17c body 17d Load 17e Connecting arm 18 Drone side float 19 Magnetic resonance type receiving plate 20 Marine Marking System 21 Navigation Aids Department (Water Beacons Department) 22 Solar power generation system 23 Marine Environment Measurement System 23a Maritime Surveillance System 24 Power supply systems for drones, ships, etc. 25. Communication Systems 26 Solar Cells 26a Solar cell for marker light 27 Charge / discharge control device 27a Charging control device 28 Batteries for navigational aid lights 29 Navigational Aids Light Control Device 30 Navigation beacon light 31 Charging batteries for drones, ships, etc. 32 Charging object detection device 33 Power supply control device 34 Power supply object 35 Battery for measuring marine environmental data 36 Measurement scanner 36a Surveillance camera 37 Communication equipment 38 Drone Measurement Scanner 39 Base station 41 Floating wind power generation facility 41a Power supply equipment 42 Pier 42a Power supply equipment 43 Lighthouse 43a Power supply equipment 44 Cable 45 Measurement and communication equipment 46 Drone communication antenna 47 Underwater Drone 47a Underwater drone communication device 48 sea level 49 Buoy side power supply device 50 Ship / drone power receiving device 51 Solar Cell 52 AC converter 53 Power supply equipment 54 Resonant current 55 Power supply resonance coil 56 Capacitor 57 Capacitor 58 Receiving side resonance coil 59 Resonant current 60 Rectifier 61 Charger 62 Battery 63 Fish Tank 63a Net 64 Farmed fish 65 Floating board 66 Solar Cells 67 Pier 68 Aerial drone power supply device 69 Power supply device for water drones A angle of incidence D Float outer diameter

Claims

1. A floating body that floats on the water surface; a solar cell provided on the floating body; and a non-contact power supply unit that supplies power to a moving body in the vicinity of the floating body main body.

2. The floating body of the water according to claim 1, characterized in that the floating body is one of a floating beacon for displaying navigational markers on ships, a floating wind power generation device that floats on the water surface to generate wind power, and an aquatic pond that floats on the water surface to cultivate aquatic plants and animals.

3. The powered water floating device according to claim 1 or claim 2, characterized in that the moving body is either an electrically powered water drone, an aerial drone, or an underwater drone.

4. 3. The water floating device according to claim 1, wherein the solar cell is a cylindrical object erected on the floating body.

5. The water floating body device described in claim 4, characterized in that the solar cells include inner solar cells arranged around the inner surface of a cylindrical plate erected on the floating body body, and outer solar cells arranged around the outer surface of the cylindrical plate.

6. The moving object is an electric aerial drone, 3. The water floating device according to claim 1, wherein the solar cell is provided on the top of the floating body.

7. 3. The water floating body device according to claim 1, wherein the non-contact power supply unit is provided around the outer circumferential surface of the floating body main body.

8. 2. The waterborne floating device according to claim 1, characterized in that it comprises an underwater marking unit that displays navigational markers to ships, a solar power generation system having the solar cell, an underwater environment measurement system having an underwater environment measurement unit that measures the underwater environment, and a communication system.

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