WO2017094635A1 - 水中探査システム - Google Patents
水中探査システム Download PDFInfo
- Publication number
- WO2017094635A1 WO2017094635A1 PCT/JP2016/085089 JP2016085089W WO2017094635A1 WO 2017094635 A1 WO2017094635 A1 WO 2017094635A1 JP 2016085089 W JP2016085089 W JP 2016085089W WO 2017094635 A1 WO2017094635 A1 WO 2017094635A1
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- WIPO (PCT)
- Prior art keywords
- underwater
- antenna
- underwater exploration
- unit
- multicopter
- Prior art date
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/48—Means for searching for underwater objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B22/00—Buoys
- B63B22/04—Fixations or other anchoring arrangements
- B63B22/08—Fixations or other anchoring arrangements having means to release or urge to the surface a buoy on submergence thereof, e.g. to mark location of a sunken object
- B63B22/12—Fixations or other anchoring arrangements having means to release or urge to the surface a buoy on submergence thereof, e.g. to mark location of a sunken object the surfacing of the buoy being assisted by a gas released or generated on submergence of the buoy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C9/00—Life-saving in water
- B63C9/01—Air-sea rescue devices, i.e. equipment carried by, and capable of being dropped from, an aircraft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/001—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
- B64C39/024—Aircraft not otherwise provided for characterised by special use of the remote controlled vehicle type, i.e. RPV
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U60/00—Undercarriages
- B64U60/10—Undercarriages specially adapted for use on water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2203/00—Communication means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2211/00—Applications
- B63B2211/02—Oceanography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
- B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
- B63G8/001—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations
- B63G2008/002—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations unmanned
- B63G2008/005—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations unmanned remotely controlled
- B63G2008/007—Underwater vessels adapted for special purposes, e.g. unmanned underwater vessels; Equipment specially adapted therefor, e.g. docking stations unmanned remotely controlled by means of a physical link to a base, e.g. wire, cable or umbilical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C27/00—Rotorcraft; Rotors peculiar thereto
- B64C27/04—Helicopters
- B64C27/08—Helicopters with two or more rotors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
- B64U10/13—Flying platforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
- B64U10/13—Flying platforms
- B64U10/14—Flying platforms with four distinct rotor axes, e.g. quadcopters
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
- B64U10/13—Flying platforms
- B64U10/16—Flying platforms with five or more distinct rotor axes, e.g. octocopters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
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- B64U2101/60—UAVs specially adapted for particular uses or applications for transporting passengers; for transporting goods other than weapons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U2201/00—UAVs characterised by their flight controls
- B64U2201/10—UAVs characterised by their flight controls autonomous, i.e. by navigating independently from ground or air stations, e.g. by using inertial navigation systems [INS]
Definitions
- the present invention relates to an underwater exploration system, and more particularly to an underwater exploration system that drops and collects an underwater vehicle capable of wireless communication with an unmanned aerial vehicle.
- UAVs unmanned aerial vehicles
- industrial unmanned helicopters have been expensive and difficult to obtain, and they require skill in maneuvering in order to fly stably.
- performance and cost of airframe parts such as acceleration sensors and angular velocity sensors have been improved, and many of the control operations of the airframe have been automated, and the operability has been dramatically improved. From such a background, the application of a small multi-copter to various missions in a wide range of fields is now being tried, not only for hobby purposes.
- Patent Document 1 discloses an underwater vehicle remote control system that performs wireless communication between the underwater vehicle 1 and the command unit 2.
- the underwater vehicle remote control system includes a relay unit 4 floated on the water surface by a floating body 41, an antenna 43 that is supported on the water surface by the relay unit 4 and performs wireless communication with the command unit 2, and the relay unit 4 and the optical cable 3. It consists of the underwater vehicle 1 connected by.
- the wireless communication between the underwater vehicle 1 and the command unit 2 is realized by the relay unit 4 converting and relaying the optical signal and the radio signal.
- the problem to be solved by the present invention is that the transmission and reception of signals with the underwater vehicle can be performed by wireless communication, and the underwater vehicle is transported to and collected from the survey point. Is to provide an underwater exploration system that can change survey points quickly.
- an underwater exploration system includes a floating member that has a first antenna and supports the first antenna on a water surface, and an underwater vehicle that is connected to the first antenna through a signal line.
- a communication device having a second antenna capable of transmitting and receiving radio signals to and from the first antenna, and an unmanned aircraft that carries the underwater search unit and drops it on the water surface. Then.
- the communication device can wirelessly communicate with the underwater vehicle through the first antenna. Furthermore, since the underwater vehicle is quickly transported to the survey point by the unmanned aircraft, the battery power and time of the underwater vehicle can be concentrated on the underwater survey, and the survey efficiency can be improved.
- the unmanned aerial vehicle includes a plurality of rotor blades and a control unit that controls flight by the plurality of rotor blades.
- Rotating wing aircraft can flexibly change moving speed and change direction. This makes it easy to drop the underwater vehicle accurately at the survey point and to collect it. In addition, by letting the unmanned aircraft fly autonomously by the control unit, it is possible to further improve the efficiency of dropping and collecting the underwater vehicle.
- the floating member expands when the floating member lands, and the first antenna is in a communicable state.
- the floating member before expansion is folded so as to wrap the underwater vehicle.
- the first antenna after landing on the underwater exploration unit stands up from the floating member, and the unmanned aircraft can hang a recovery member that captures the first antenna from its fuselage.
- the first antenna has a strength capable of supporting the weight of the underwater exploration unit.
- the unmanned aerial vehicle has a collecting member that captures the first antenna, and the first antenna has a strength capable of supporting the weight of the underwater exploration unit, thereby facilitating the collection of the underwater exploration unit.
- the underwater exploration unit has means for transmitting the current position information of the underwater exploration unit, and the unmanned aircraft can automatically approach the underwater exploration unit based on the current position information. Is preferred.
- the underwater exploration unit can transmit its current position information, it is possible to automate the collection of the underwater exploration unit by an unmanned aerial vehicle.
- a buffer facility in which the underwater exploration unit collected by the unmanned aerial vehicle is dropped.
- transmission / reception of signals with the underwater vehicle can be performed by wireless communication, and transportation of the underwater vehicle to the investigation point and its recovery, Furthermore, it becomes possible to change survey points quickly.
- the underwater exploration system is a system that transports and drops an underwater vehicle from a land to a predetermined survey point on the sea by a wireless aircraft, and captures an underwater state at the survey point.
- a place where the underwater exploration system of the present invention can be used for example, a sea, a lake, a river, a reservoir, a water tank, a pool, and the like are conceivable. However, any place where water (liquid) is stored may be used. It can be used.
- FIG. 1 is a schematic diagram illustrating a state in which the underwater exploration system S according to the present embodiment is photographed under the sea.
- the underwater exploration system S is mainly configured by a multicopter M (unmanned aerial vehicle), an underwater exploration unit I, a command station C (communication device), and a recovery pool P (buffer facility).
- the underwater exploration unit I includes a first antenna 310, a buoy 300 (a floating member) that supports the first antenna 310 on the sea surface, and an underwater vehicle 200 connected to the first antenna 310 by a signal line 201.
- the command station C includes a second antenna 410 that can transmit and receive radio signals to and from the first antenna 310, and transmits a steering instruction to the underwater vehicle 200 by wireless communication via the first antenna 310.
- the underwater vehicle 200 receives underwater video and still image data captured by the underwater camera 260 and displays them on a display device (not shown).
- the multicopter M is a takeoff and landing field of the multicopter M (in the present embodiment, the takeoff and landing field of the multicopter M is also referred to as the command station C in the following description).
- a transportation means for dropping and collecting the underwater exploration unit I is also referred to as the command station C in the following description.
- FIG. 2 is a block diagram showing a functional configuration of the multicopter M according to the present embodiment.
- the multicopter M includes a flight controller FC (control unit), a plurality of rotors R (rotary blades), an ESC 153 (Electric Speed Controller) arranged for each rotor R, and a wireless transceiver that performs wireless communication with a pilot's control terminal 171. 172 and a battery 180 serving as a power supply source are provided in a housing 190.
- Each rotor R is composed of a motor 151 which is a DC motor and a blade 152 attached to the output shaft thereof.
- the ESC 153 is connected to the motor 151 of the rotor R and is a device that rotates the motor 151 at a speed instructed by the flight controller FC.
- the multicopter M in this embodiment is a quadcopter on which four rotors R are mounted.
- the number of rotors R is not limited to four, and the required flight stability and allowable cost are achieved. Accordingly, the rotor R can be appropriately changed from two helicopters to eight octocopters and a multicopter having more rotors.
- the flight controller FC includes a control device 110 that is a microcontroller.
- the control device 110 includes a CPU 111 that is a central processing unit, a memory 112 that is a storage device such as a ROM and a RAM, and a PWM controller 113 that controls the rotational speed and rotational speed of each motor 151 via the ESC 153.
- the flight controller FC further includes a flight control sensor group 130 and a GPS receiver 140 (hereinafter also referred to as “sensors”), which are connected to the control device 110.
- the flight control sensor group 130 of the multicopter M in this embodiment includes an acceleration sensor, an angular velocity sensor, an atmospheric pressure sensor (altitude sensor), and a geomagnetic sensor (orientation sensor).
- the control device 110 can acquire position information of the own aircraft including the latitude and longitude of the aircraft, the altitude, and the azimuth angle of the nose, in addition to the tilt and rotation of the aircraft, using these sensors and the like.
- the multicopter M in this embodiment is assumed to acquire the flight altitude using a barometric sensor, but in addition to the barometric sensor, measurement using various methods such as infrared, ultrasonic, or laser is also possible. It is also possible to obtain altitude by pointing the distance sensor toward the ground surface or the sea surface.
- the memory 112 of the control device 110 stores a flight control program FCP, which is a program in which a flight control algorithm for controlling the attitude and basic flight operation of the multicopter M during flight is stored.
- the flight control program FCP adjusts the rotational speed and rotational speed of each rotor R based on the current position acquired from the sensor or the like according to the instructions of the pilot (control terminal 171), and corrects the attitude and position disturbance of the aircraft. While flying the multicopter M.
- the pilot of the multicopter M may be manually operated by the operator using the control terminal 171, or parameters such as latitude / longitude, altitude, flight route, etc. are registered in advance in the flight control program FCP to the destination. You may fly autonomously (hereinafter, such autonomous flight is referred to as “autopilot”).
- An electric winch 161 around which a wire 162 is wound is attached to the lower surface of the multicopter M.
- the winch 161 (and the wire 162) is a device that suspends the underwater exploration unit I from the multicopter M, whereby the multicopter M can carry and drop the underwater exploration unit I.
- the winch 161 is connected to a power supply line from the battery 180 and a signal line to the control device 110, and the winch 161 extends and winds the wire 162, and from the wire 162 in accordance with an instruction from the control device 110.
- the underwater exploration unit I is cut.
- the attachment 162a connected to the underwater exploration unit I is detachably connected to the tip of the wire 162.
- the winch 161 can cut the attachment 162a at any time.
- the cutting method of the attachment 162a from the winch 161 is not particularly limited.
- a structure in which the attachment 162a is electronically separated by superimposing lines can be considered.
- the attachment 162a is not an essential configuration.
- a disposable string capable of supporting the weight of the underwater exploration unit I is used as the wire 162, and the winch 161 drops the underwater exploration unit I by cutting the string. It is good.
- the “unmanned aircraft” in the present invention is not limited to the rotary wing aircraft.
- a fixed wing aircraft can be used as the unmanned aerial vehicle of the present invention as long as it is a skilled pilot or an aircraft capable of highly accurate autopilot control.
- FIG. 3 is a block diagram showing a functional configuration of the underwater vehicle 200 according to the present embodiment.
- the underwater vehicle 200 mainly integrates the operations of the underwater camera 260 for photographing the sea, a plurality of screw propellers 252 that are thrust sources of the underwater vehicle 200 in the sea, the screw propellers 252 and the underwater camera 260.
- a control device 210 to be managed, a signal line 201 that connects the control device 210 and the first antenna 310, and a battery 280 that supplies power to these are arranged in the housing 290.
- the control device 210 of the underwater vehicle 200 includes a CPU 211 that is a central processing unit, a memory 212 that is a storage device such as a ROM and a RAM, and a PWM controller that controls the rotation speed and rotation speed of each motor 251 via the ESC 253. 213.
- the memory 212 of the control device 210 stores a propulsion control program PCP for controlling the shooting direction and basic navigation operation of the underwater vehicle 200 in the sea.
- the propulsion control program PCP adjusts the rotational speed and rotational speed of each screw propeller 252 in accordance with an instruction from the command station C (second antenna 410) received via the first antenna 310, and moves the hull and the shooting direction. Make changes.
- the control device 210 transmits an image captured by the underwater camera 260 to the second antenna 410 (command station C) via the first antenna 310 in real time.
- the underwater vehicle 200 further includes an attitude control sensor group 230 including an acceleration sensor and an angular velocity sensor.
- the propulsion control program PCP automatically corrects the posture disturbance of the underwater vehicle 200 based on the information acquired from the posture control sensor group 230, and continues to maintain the shooting direction specified by the command station C.
- the underwater vehicle 200 in the present embodiment desirably includes the attitude control sensor group 230 and the attitude correction function in order to stabilize the imaging direction because of its nature of imaging underwater images.
- the attitude control sensor group 230 and the attitude correction function may be omitted when there is no particular hindrance to the control or when the attitude of the underwater vehicle 200 does not affect the quality of the collected information.
- the underwater vehicle 200 in the present embodiment is configured to be capable of not only changing the attitude (shooting direction) in the sea but also moving the hull (moving the shooting position) by self-propelling. It is also possible to make a configuration in which only the change is possible, and the hull is moved by being transported by the multicopter M each time. On the other hand, it is also possible to register the operation of the underwater vehicle 200 at the survey point in advance in the propulsion control program PCP and automatically perform a regular survey. Furthermore, the underwater vehicle 200 according to the present embodiment is configured to perform posture control and propulsion direction control by adjusting the propulsive force of the plurality of screw propellers 252 as in the multicopter M. The propulsion control may be performed using a fixed screw propeller and rudder.
- the underwater vehicle 200 has a mission of underwater shooting at the survey point and transmission of the shot data to the command station C, but information collected by the underwater vehicle 200 at the survey point includes this.
- the information is not limited and may be other information as long as it can be detected by a sensor or the like.
- the underwater vehicle 200 in the present embodiment can navigate independently from the buoy 300 within the range of the signal line 201, but the underwater vehicle 200 is integrated with the buoy 300, and from the sea surface to the sea. It is good also as a structure which image
- the buoy 300 is a bag-like body that expands by being filled with gas and floats on the sea surface due to its buoyancy.
- the buoy 300 before being dropped onto the sea surface is in an unexpanded state not filled with gas, and is folded so as to wrap the underwater vehicle 200 inside.
- the buoy 300 is transported together with the underwater vehicle 200 to the survey point on the sea by the multicopter M, dropped into the sea surface and landed, and automatically filled with gas to be in an expanded state.
- the buoy 300 that wraps the underwater vehicle 200 acts as a buffer member for the underwater vehicle 200 when the underwater exploration unit I lands. If necessary, a cushioning material may be separately arranged between the folded buoy 300 and the underwater vehicle 200 inside thereof.
- a known automatic expansion mechanism can be used as a mechanism for expanding the buoy 300 at the time of landing.
- a mechanism for example, a gas cylinder lock mechanism in which liquefied gas (such as carbon dioxide or a mixed gas of carbon dioxide and nitrogen gas) is sealed, a component that dissolves with a liquid such as water is used.
- the structure is such that the lock mechanism is released when the parts are melted by water landing and the bag-like body is filled with gas, or the lock mechanism of the gas cylinder is electronically released using a sensor that detects water wetting and so on.
- the outer shape of the expanded buoy 300 in the present embodiment is a flat spherical shape. Therefore, even when the underwater vehicle 200 is placed on the buoy 300 when the buoy 300 expands on the sea surface, the underwater vehicle 200 falls into the sea without being stabilized in position.
- the underwater vehicle 200 that has fallen into the sea pulls the buoy 300 by the signal line 201 by its own weight, and corrects the upper and lower surfaces of the buoy 300 to the original arrangement. Thereby, the upper and lower surfaces of the buoy 300 are kept constant when floating, and the first antenna 310 supported by the buoy 300 can always be disposed above the sea surface.
- the “floating member” in the present invention is not limited to the form of the buoy 300, and other floating members may be used as long as they can float on the water surface while supporting the first antenna.
- the automatic expansion mechanism of the buoy 300 is not an essential configuration, and a floating member that has been expanded from the beginning may be used as long as it does not interfere with loading into the multicopter M or transportation.
- the first antenna 310 is a rod-like body whose base end is coupled to the buoy 300 and stands up when the buoy 300 is floating. Since the first antenna 310 in this embodiment is not provided with a mechanism for adjusting the angle in the circumferential direction, an omnidirectional antenna is used, but stable transmission and reception of radio signals with the command station C is possible. Any type of antenna can be used as long as the antenna can be used.
- a flange 311 that is not related to transmission / reception of radio waves extends in the horizontal direction from the outer peripheral surface of the first antenna 310.
- the hook 311 is mutually engaged with the attachment 162a of the wire 162 of the multicopter M, so that the multicopter M can lift the underwater exploration unit I.
- the 1st antenna 310 (and collar part 311) in this embodiment has the intensity which can support the weight of underwater exploration unit I.
- the command station C includes a second antenna 410 capable of transmitting and receiving radio signals to and from the first antenna 310.
- the command station C transmits a steering instruction to the underwater vehicle 200 through wireless communication via the first antenna 310, This is a facility that receives the underwater video and still image data taken by the underwater camera 260 by the middle traveling body 200 and displays it on a display device (not shown).
- the second antenna 410 in this embodiment is a directional antenna that can adjust the radiation direction of radio waves, but is not limited to this, and is an antenna that can stably transmit and receive radio signals to and from the first antenna 310. There is no limitation on the type.
- the collection pool P is a water tank in which water is stored.
- the underwater exploration unit I collected by the multicopter M is dropped into the collection pool P.
- the water stored in the collection pool P acts as a buffer material when the underwater exploration unit I is dropped, making it possible to collect the underwater exploration unit I more safely.
- the “buffer facility” of the present invention is not limited to the form of the collection pool P, and may be an air cushion or the like.
- the buffer equipment of the present invention is not an essential configuration, and the command station C may simply lower the descent speed of the multicopter M and land the recovered underwater vehicle 200 gently on the ground.
- FIG. 4 is a schematic diagram showing how the multicopter M transports the underwater exploration unit I to the survey point and drops it.
- the underwater vehicle 200 In the underwater exploration unit I before dropping into the survey point, the underwater vehicle 200 is wrapped inside the buoy 300 that is in an unexpanded state, and the first antenna 310 is also tilted inside the buoy 300. At this time, the underwater vehicle 200 is not activated, and therefore the first antenna 310 is in a communication disabled state.
- the underwater exploration unit I of the present embodiment is easily folded and transported to the multicopter M because the volume of the underwater exploration unit I before being dropped is convoluted. Further, since the first antenna 310 is in a communication disabled state until landing on the sea surface, malfunction of the underwater vehicle 200 during transportation is prevented.
- the method of starting the underwater vehicle 200 (first antenna 310) after dropping is not particularly limited.
- the normally open push that is energized when the underwater vehicle 200 is released from the buoy 300 is used.
- a method using a button switch a method of detecting the landing of the underwater vehicle 200 (the method of detecting the landing is the same as the method of the automatic expansion mechanism of the buoy 300) and starting energization, or starting with a timer May be. If malfunction of the underwater vehicle 200 during transportation and waste of the battery 280 are not a problem, naturally, the underwater vehicle 200 (first antenna 310) is loaded in advance when the underwater exploration unit I is loaded into the multicopter M. May be activated.
- the underwater exploration unit I When conducting the survey, first, the underwater exploration unit I is connected to the attachment 162a of the wire 162 manually at the command station C. Thereafter, the multicopter M is made to fly to the investigation point by autopilot (or by manual control using a control terminal 171 not shown). When the multicopter M arrives vertically above the survey point, the multicopter M is hovered on the spot, and the altitude of the multicopter M is lowered within a safe range without touching the sea surface. When the multicopter M descends to a predetermined altitude, the multicopter M automatically disconnects the attachment 162a (or manually using the control terminal 171). Thereby, the underwater exploration unit I is dropped on the sea surface.
- FIG. 5 is a schematic diagram showing a state in which the multicopter M finishes dropping the underwater exploration unit I and returns to the command station C. After the underwater exploration unit I is dropped, the multicopter M returns to the command station C by autopilot (or by manual control using the control terminal 171).
- the buoy 300 In the underwater exploration unit I dropped on the sea surface, the buoy 300 automatically expands, so that the underwater vehicle 200 is submerged in the sea and the first antenna 310 stands up. At this time, the underwater vehicle 200 is activated, and the first antenna 310 becomes communicable.
- FIG. 6 is a schematic diagram showing a state where the multicopter M heads for recovery of the underwater exploration unit I after the survey is completed.
- the command station C manually attaches the underwater exploration unit I collection attachment 162a to the multicopter M.
- the multicopter M is caused to fly by autopilot (or by manual operation using the operation terminal 171) toward the investigation point.
- the multicopter M approaches the vicinity of the survey point, the multicopter M lowers the attachment 162 a to the altitude of the flange 311 of the first antenna 310.
- the attachment 162a and the buttocks 311 can be engaged by manual control by visual observation. If these distances are long, an FPV (First Person View) system is provided separately at the command station C and the multicopter M, so that the lower image captured by the camera of the multicopter M can be visually checked and manually operated. The attachment 162a and the collar 311 can be engaged.
- FPV First Person View
- the underwater exploration unit I it is possible to automate the collection of the underwater exploration unit I by separately providing a means for transmitting the current position information in the underwater exploration unit I.
- a configuration in which a GPS receiver is separately provided in the first antenna 310 or the buoy 300 and the current position information acquired by the GPS receiver is transmitted from the first antenna 310 to the command station C can be considered.
- the current position information received by the command station C is transferred to the multicopter M via the control terminal 171.
- the multicopter M automatically engages the attachment 162a and the collar 311 while monitoring the current position of the underwater exploration unit I based on such information.
- the current position information may be transmitted directly from the underwater exploration unit I to the multicopter M.
- a high-intensity light source flashing at 15 fps or less is arranged on the first antenna 310 or the buoy 300, and this is photographed with a visible light camera separately mounted on the multicopter M to identify the current position of the underwater exploration unit I It is also possible to do.
- information about 15 bps can be transmitted to the multicopter M and the command station C by operating the blinking pattern of the light source and using it as a Morse code.
- Such a communication function is considered to be effective, for example, when specifying one unit to be collected from a plurality of underwater exploration units I.
- FIG. 7 is a schematic diagram showing a state where the multicopter M after capturing the underwater exploration unit I flies to the collection pool P.
- the multicopter M that has succeeded in engaging the attachment 162a and the heel part 311 winds up the wire 162 and suspends the underwater exploration unit I by an autopilot (or by manual operation using the operation terminal 171). Head to P.
- the multicopter M moves to the next survey point instead of the collection pool P.
- the underwater exploration unit I in the present embodiment can collect the underwater exploration unit I by such a method because the first antenna 310 has a strength capable of supporting the weight of the underwater exploration unit I. ing.
- the underwater vehicle 200 includes a winding mechanism for the signal line 201, it is desirable to wind the signal line 201 before the recovery of the underwater exploration unit I.
- the multicopter M When the multicopter M arrives vertically above the collection pool P, the multicopter M hovers on the spot and descends to an altitude that the underwater vehicle 200 sinks into the collection pool P. Thereafter, the multicopter M automatically cuts the attachment 162a from the wire 162 (or manually using the control terminal 171). As a result, the underwater exploration unit I is dropped into the collection pool P. When the underwater vehicle 200 dropped into the collection pool P is lifted from the collection pool P, the underwater vehicle 200 can be maneuvered to the end of the collection pool P, or simply drawn by using a stick or the like. good.
- the multicopter M that dropped the underwater exploration unit I into the collection pool P returns to the command station C by autopilot (or by manual operation using the operation terminal 171).
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Abstract
Description
図1は本実施形態にかかる水中探査システムSにより海中を撮影する様子を示す模式図である。水中探査システムSは、主に、マルチコプターM(無人航空機)、水中探査ユニットI、指令局C(通信装置)、および回収プールP(緩衝設備)により構成されている。
図2は本実施形態にかかるマルチコプターMの機能構成を示すブロック図である。マルチコプターMは、フライトコントローラFC(制御部)、複数のローターR(回転翼)、ローターRごとに配置されたESC153(Electric Speed Controller)、操縦者の操縦端末171と無線通信を行う無線送受信器172、および電力供給源であるバッテリー180が筐体190に配設されることにより構成されている。
図3は本実施形態にかかる水中航走体200の機能構成を示すブロック図である。水中航走体200は、主に、海中を撮影する水中カメラ260、海中における水中航走体200の推力源である複数のスクリュープロペラ252、各スクリュープロペラ252や水中カメラ260の動作を一元的に管理する制御装置210、制御装置210と第1アンテナ310とを接続する信号線201、およびこれらに電力を供給するバッテリー280が筐体290に配設されることにより構成されている。
ブイ300は内部にガスが充填されることで膨張し、その浮力により海面を浮遊する袋状体である。海面への投下前のブイ300は、ガスが充填されていない非膨張状態にあり、内側に水中航走体200を包むように折り畳まれている。ブイ300は、マルチコプターMにより水中航走体200とともに海上の調査地点に運搬され、海面に投下され着水することで自動的にガスが充填されて膨張状態となる。水中航走体200を包むブイ300は、水中探査ユニットIの着水時における水中航走体200の緩衝部材として作用する。必要に応じて、折り畳まれたブイ300と、その内側の水中航走体200との間に別途緩衝材を配置してもよい。
第1アンテナ310は、その基端部がブイ300に結合されており、ブイ300の浮遊時において上方へと起立する棒状体である。本実施形態における第1アンテナ310には、その周方向の角度を調節する機構が設けられていないため、無指向性のアンテナが用いられているが、指令局Cとの無線信号の送受信を安定して行うことができるアンテナであればその種類は問わない。
指令局Cは、第1アンテナ310と無線信号を送受信可能な第2アンテナ410を備えており、第1アンテナ310を介して無線通信により水中航走体200への操縦指示を送信するとともに、水中航走体200がその水中カメラ260で撮影した海中の映像や静止画像のデータを受信して、図示しない表示装置に表示する設備である。
回収プールPは水が溜められた水槽である。マルチコプターMが回収した水中探査ユニットIは回収プールPに投下される。回収プールPに溜められた水は水中探査ユニットIの投下時における緩衝材として作用し、水中探査ユニットIをより安全に回収することを可能としている。本発明の「緩衝設備」は回収プールPの形態には限定されず、エアークッションなどでもよい。また、本発明の緩衝設備は必須の構成ではなく、指令局Cにおいて単にマルチコプターMの降下速度を落とし、回収した水中航走体200をゆるやかに地上に着陸させてもよい。
以下、図4乃至図7を用いて、マルチコプターMが水中探査ユニットIを調査地点へ運搬して投下する動作、および調査終了後の水中探査ユニットIを回収する動作について説明する。
Claims (7)
- 第1アンテナを有し該第1アンテナを水面上に支持する浮き部材と、該第1アンテナと信号線で接続された水中航走体と、を備える水中探査ユニットと、
前記第1アンテナと無線信号を送受信可能な第2アンテナを有する通信装置と、
前記水中探査ユニットを運搬し水面に投下する無人航空機と、を備えることを特徴とする水中探査システム。 - 前記無人航空機は、複数の回転翼と、該複数の回転翼による飛行を制御する制御部と、を有することを特徴とする請求項1に記載の水中探査システム。
- 前記浮き部材は着水により膨張し、前記第1アンテナが通信可能状態になることを特徴とする請求項1または請求項2に記載の水中探査システム。
- 膨張前の前記浮き部材は、前記水中航走体を内側に包むように折り畳まれていることを特徴とする請求項3に記載の水中探査システム。
- 前記水中探査ユニットの着水後における前記第1アンテナは、前記浮き部材から上方に起立しており、
前記無人航空機は、その機体から、前記第1アンテナを捕捉する回収部材を垂下可能であり、
前記第1アンテナは前記水中探査ユニットの重量を支持可能な強度を有していることを特徴とする請求項1または請求項2に記載の水中探査システム。 - 前記水中探査ユニットは、該水中探査ユニットの現在位置情報の発信手段を有しており、
前記無人航空機は、前記現在位置情報に基づいて前記水中探査ユニットに自動的に接近可能であることを特徴とする請求項1または請求項2に記載の水中探査システム。 - 前記無人航空機が回収した前記水中探査ユニットが投下される緩衝設備をさらに備えることを特徴とする請求項1または請求項2に記載の水中探査システム。
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US15/780,652 US10683069B2 (en) | 2015-12-01 | 2016-11-28 | Underwater exploration system |
AU2016362648A AU2016362648B2 (en) | 2015-12-01 | 2016-11-28 | Underwater exploration system |
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