KR102136309B1 - Wireless power transmitter for flight and method for controlling thereof - Google Patents

Abstract

In the present invention, the power transmission apparatus receives an antenna array, a communication unit that receives received power information from a vehicle, and a wave for location detection from the vehicle through the antenna array, and increases the received power of the location detection wave received by each patch antenna. Provided is a wireless power transmitter for a vehicle that includes a control unit for determining a distance and a beam width of a vehicle in comparison with a preset received power size and controlling to emit a power transmission wave according to the determined distance and beam width.
According to the present invention, it is possible to reduce the energy and time required according to the movement of the charging station because the vehicle that needs power supply does not need to move to the charging station at a specific location for charging.

Description

Wireless power transmission device for aircraft and its control method {WIRELESS POWER TRANSMITTER FOR FLIGHT AND METHOD FOR CONTROLLING THEREOF}

The present invention relates to a wireless power transmission apparatus for a vehicle and a control method thereof, and more particularly, to a wireless power transmission apparatus for a vehicle and a control method thereof that can supply power required for the vehicle from the ground by using electromagnetic waves.

With the recent development of information and communication technology, various services are provided through information and communication devices anytime, anywhere, and as devices that implement these services, the spread of mobile devices such as smartphones and notebook computers increases, and naturally, long-term use of the mobile devices There is a demand for power supply. In supplying power to such portable devices, the user has the inconvenience of charging the battery by commercial power every time. In particular, as IoT power generation and smart factories increase in use as smart sensors in the fourth industry, technologies to supply power to mobile devices and smart sensors using wireless power transmission that combines IT and energy technologies are emerging.

Wireless power transmission technology is classified into magnetic induction method, magnetic resonance method, magnetic field sensor method and radio wave reception method. The radio wave receiving method may be used for relatively long-distance power transmission by receiving electric power by converting radio waves emitted through a transmitter antenna into direct current using a rectifier circuit.

The drone is a vehicle that can be controlled by radio waves by a remote control device on the ground, and includes cameras, sensors, and communication systems, and is used in various fields such as leisure, surveillance, and industrial use.

Disclosed is a charging station for charging an unmanned aerial vehicle of Korean Patent Registration No. 10-1803917 in connection with a technology capable of transmitting power to the drone. The prior art controls the user to automatically move to the charging station by receiving a response to the radio waves, rather than moving to the charging station by adjusting the vehicle. However, the prior art does not disclose a configuration for efficiently transmitting wireless power by grasping the position of the air vehicle in the space when the air vehicle is depleted during flight, and moving to a charging station every time. .

Therefore, if power is required for the vehicle, it is possible to supply wireless power by tracking the location of the vehicle without needing to move to a charging station in a specific location. In determining the location of the vehicle, it is possible to quickly determine the location while preventing power consumption. There is a need for a wireless power transmitter for a vehicle and a control method therefor.

Republic of Korea Registered Patent Publication No. 10-1803917 (2017.12.04)

The present invention was devised to solve the above-mentioned problems, and the object of the present invention is for an aircraft capable of supplying wireless power by tracking the location of the vehicle without having to move to a charging station at a specific location when power is required for the vehicle. It is to provide a wireless power transmission apparatus and a control method thereof.

In order to solve the above problems, the wireless power transmitter for a vehicle according to an embodiment of the present invention is an antenna array, a communication unit for receiving received power information from the vehicle, and a preset irradiation to determine the position of the vehicle through the antenna array Each scanning wave is radiated in the direction, and the received power size transmitted from the vehicle receiving each scanning wave is compared with a preset received power size to determine the distance and beam width of the vehicle, and according to the determined distance and beam width. It may include a control unit for controlling to radiate the power transmission wave.

In order to solve the above problems, the wireless power transmitter for a vehicle according to an embodiment of the present invention receives an antenna array, a communication unit for receiving received power information from the vehicle, and a wave for position detection from the vehicle through the antenna array, respectively A control unit for determining the distance and beam width of the vehicle by comparing the received power size of the position detection wave received by the patch antenna with a preset received power size, and controlling to emit a power transmission wave according to the determined distance and beam width It can contain.

According to the present invention as described above, it is possible to reduce the energy and time required according to the movement of the charging station because the vehicle that needs power supply does not need to move to the charging station at a specific location for charging. Therefore, it is possible to increase the flight efficiency by being able to continuously perform the task assigned to the vehicle without being disconnected by charging.

In addition, the position of the vehicle can be grasped using the minimum power through the position detection wave, and wireless power can be continuously supplied to the vehicle by using the vehicle operation information received from the remote control device when the vehicle moves.

1 is a block diagram of a wireless power transmitter for a vehicle, a vehicle, and a control device according to an embodiment of the present invention.
2 is a block diagram for explaining a transmission/reception processing unit of a wireless power transmission apparatus according to an embodiment of the present invention.
3 is a block diagram of a wireless power vehicle according to an embodiment of the present invention.
4A to 4D are conceptual diagrams and flowcharts for explaining a process of finding an aircraft by minimizing an irradiation range during scanning according to an embodiment of the present invention.
5 is a conceptual diagram showing the number and beam width of a power transmission wave according to the number and location of a vehicle according to an embodiment of the present invention.
6 is a conceptual diagram for explaining a process of controlling the irradiation range and number of scanning waves by using the center distance information for a plurality of aircraft according to an embodiment of the present invention.
7 is a conceptual diagram for continuously transmitting wireless power to a vehicle through a location tracking server that tracks the location of the vehicle according to an embodiment of the present invention.
8 is a view illustrating a radiation pattern in which beam width and size of a power transmission wave are changed according to size and phase control of a signal supplied to each patch antenna according to an embodiment of the present invention.
9 is an exemplary view of a driver for changing the direction of an antenna array according to the movement of an aircraft according to an embodiment of the present invention.
10 is a conceptual diagram for grasping the center position of an aircraft using a scanning wave according to an embodiment of the present invention.

The present invention can be applied to various transformations and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention and methods for achieving them will be clarified with reference to embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms. In the following examples, terms such as first and second are not used in a limiting sense, but for the purpose of distinguishing one component from other components. Also, a singular expression includes a plural expression unless the context clearly indicates otherwise. In addition, terms such as include or have means that a feature or component described in the specification exists, and does not preclude the possibility of adding one or more other features or components in advance. In addition, in the drawings, the size of components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to what is shown.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same or corresponding components will be given the same reference numerals when describing with reference to the drawings, and redundant description thereof will be omitted. .

1 is a block diagram of a wireless power transmitter for a vehicle, a vehicle, and a control device according to an embodiment of the present invention.

As shown in FIG. 1, the wireless power transmitter 100 is composed of a plurality of patch antennas to generate power for a predetermined scanning wave or power transmission wave, the antenna array 130, and power to the vehicle 200 in a predetermined position. It may include a control unit 110 for controlling the generation of the power transmission wave to transmit.

The antenna array 130 may be formed of various antenna structures and shapes for emitting electromagnetic waves in a form in which a plurality of patches are arranged in various directions. The transmission/reception processing unit 120 adjusts at least one or more of the size, phase, and operation of the signal supplied to each patch of the antenna array 130 under the control of the control unit 110 to determine a predetermined size and direction. And a power transmission wave having a beam width. The operation status indicates whether or not a signal is supplied to an antenna patch. For example, when a signal is not supplied to a corresponding antenna patch, the patch does not emit any signal. Here, the power transmission wave is defined as an electromagnetic wave for finally transmitting power to the vehicle 200 in a predetermined position, and in order to determine the location of the vehicle 200, the entire patch of the antenna array or a part of the patch (antenna group) It is distinct from scanning waves emitted through. The scanning wave has a preset beam width and size under the control of the control unit 110, sequentially in the range of -180° to +180°, or in a preset irradiation order or within a direction range determined by the position detection wave. By changing the irradiation range (angle) of, the power of the scanning wave can be transmitted to the vehicle. The power transmission wave or the scanning wave may be made by a beamforming technique that controls to be generated by mutual reinforcement and interference of electromagnetic waves emitted from each patch of the antenna array 130 (see FIG. 8). Beamforming technology according to various types of antenna structures and changes in impedance may be made by various known methods, and the present invention is not limited to a specific beamforming technology.

The control unit 110 may use antenna control information previously stored in the memory 150 so that the scanning wave or the power transmission wave transmits wireless power to a specific point. The antenna control information is control information for the size, phase, and operation of a signal supplied to each patch of each antenna array to generate a scanning wave or a power transmission wave by interference and reinforcement of electromagnetic waves radiated from each patch antenna. It can be understood as beamforming information for. In addition, the antenna control information may include received power distance information for a reference power size capable of determining a distance compared to received power transmitted from a vehicle that has received a scanning wave or a power transmission wave. For example, the control unit 110 may include first scanning waves, second scanning waves to n-th scanning waves formed by sequentially changing an irradiation angle with a preset beam width and size in order to determine the direction of the aircraft 200 somewhere in space. Can be sent to the vehicle. In this case, the vehicle 200 may transmit each received power information received by the first scanning wave, the second scanning wave, or the nth scanning wave to the power transmission device 100 through the communication unit 240. The power transmission apparatus 100 sequentially radiates each of the first scanning wave, the second scanning wave to the n-th scanning wave in a range of -180° to +180°, for example, with a reference power size of 40 mW, as shown in Table 1 below. It is assumed that received power information is received from the vehicle 200.

Irradiation angle Transmitted from the vehicle
Receiving power (mW) Antenna control information (memory) Distance(m) Receiving power (mW) 1st scanning wave -180° 0 One 18.52 .
.
.
Below the preset reference value (10mW)
2

15.57 K-1 scanning wave -10° 13.56 3 10.53 K-th scanning wave 0° 15.26 4 5.84 K+1 scanning wave +10° 14.05 5 3.25 .
.
.
Below the preset reference value (10mW)
6
2.15
Nth scanning wave +180° 0 7 1.12

Referring to Table 1, the control unit 110 has a received power of 15.57 mW for the maximum value of received power received from the vehicle (15.26 mW) and a reference power size of 40 mW from preset antenna control information. It can be judged that the distance is 2m. At the same time, the control unit 110 may determine the irradiation angle of -10° to +10° of the scanning waves of K-1, K, and K+1 that are equal to or greater than a preset received power reference value (10 mW) as beam width information. Therefore, the control unit 110 that grasps the distance, beam width, and direction (the direction is already determined by the scanning wave) of the vehicle by the scanning wave is preset to generate a power transmission wave having a distance of 2 m and a beam width of -10° to +10°. The transmission/reception processor 120 may be controlled according to the antenna control information to transmit power transmission waves through the antenna array to the vehicle 200 in the determined position.

The vehicle 200 may be a drone or an aircraft that can be adjusted by radio waves by the remote controller 300 on the ground. 3 is a block diagram of a wireless power vehicle according to an embodiment of the present invention.

1 and 3, the vehicle 200 is a power receiving antenna 230 for receiving a scanning wave or a power transmission wave, a power conversion unit for rectifying the received scanning wave or power transmission wave and converting it into direct current ( 220), the charging unit 201 for charging the converted DC and the charging control, generating the received power information of a scanning wave or a power transmission wave and then controlling to transmit to the power transmission device 100 through the communication unit 240 It includes a control unit 210.

The control unit 210 monitors the power information charged in the charging unit 201, and if the charging power is less than or equal to a preset minimum power, determines that charging is necessary, generates a position detection wave, and transmits power through the communication unit 240 (100). The location detection wave may be in the same frequency band as the power transmission wave or may be formed in a separate communication channel frequency band, and may include wireless charging request information. The position detection wave has a size and phase, and a preset reference radiation power can be set, and the preset reference radiation power is used by the power transmission device 100 to determine the distance of the vehicle according to the received power of the position detection wave. In order to be able to be included in the antenna control information stored in advance in the memory 150. The vehicle 200 includes a switching unit 260 for forming a transmission path between the communication unit 240 and the power receiving antenna 230 to transmit the position detection wave to the antenna array 130 through the power receiving antenna 230. It can contain. When receiving the power transmission wave, the switching unit 260 may be formed of a circulator capable of connecting the power receiving antenna 230 and the power conversion unit 2220 under the control of the control unit 210. . When the location detection wave is radiated through the antenna (not shown) of the communication unit 240 or when radiated through the power receiving antenna 230, the antenna array 130 of the power transmission device and the antenna of the communication unit 140 (not shown) City). When the position detection wave is radiated through the power receiving antenna 230 through the switching unit 260 and input to the antenna array 130, more accurate power than when radiated through the antenna (not shown) of the communication unit 240 Wireless power transmission efficiency can be increased by detecting the position of the receiving antenna 230 by the power transmission device 100.

The vehicle 200 further includes a sensor unit 250 that generates GPS information, altitude information, angular velocity information, and acceleration information, and the sensor unit 250 includes a GPS sensor, an altitude sensor, a gyro sensor, a linear sensor, and an acceleration sensor. And a number of sensors. The control unit 210 of the vehicle 200 processes the GPS information, altitude information, angular velocity information, and acceleration information to obtain location information including the velocity, direction, and tilt of the vehicle in the current space through the communication unit 240. It can be transmitted to the remote control device 300

The remote control device 300 receives flight operation information according to the operation of the operation unit 330 and the operation unit 330 for receiving operation commands such as ascending, descending, rotating, and moving the vehicle 200 through the joystick or navigation stick. It may include a control unit 310 to generate and control to transmit the vehicle operation information to the vehicle 200. The control unit 310 of the remote control device 300 may control the vehicle operation information to be transmitted to the power transmission device 100 in real time, and the power transmission device 100 uses the received vehicle operation information to control the vehicle ( The location and movement of 200) can be quickly identified. For example, the control unit 110 of the power transmission device 100 determines that the vehicle is moving when the reception power according to the scanning wave or the power transmission wave or the location detection wave is changed, and determines that the vehicle is moving and receives the operation information of the vehicle It is possible to control the driver 400 to change the direction of the antenna array to continuously transmit wireless power to the vehicle or to receive a position detection wave. 9 is an exemplary view of a driving unit that changes the direction of an antenna array according to the movement of an aircraft according to an embodiment of the present invention, the driving unit 400 is a horizontal rotation unit 310 connected to one side of the antenna array 130 and The horizontal rotation part 310 may be formed of a vertical rotation part 320 connected to the horizontal rotation part 310. The control unit 110 can accurately follow the position change according to the movement of the vehicle 200 by controlling the horizontal rotating unit 310 and the vertical rotating unit 320 according to the vehicle operation information transmitted from the remote control device 300.

2 is a block diagram for explaining a transmission/reception processing unit of a wireless power transmission apparatus according to an embodiment of the present invention.

Referring to FIG. 2, the transmission/reception processing unit 120 may include an amplification unit 124, an attenuator 123, a phase shifter 122, and a first control unit 121.

Transceiver processing unit 120 may be made of a plurality of to control the phase and magnitude of the signal supplied to each patch (131 ~ 131n), the control unit 110 for controlling each of the transmitting and receiving processing unit 120 The first control unit 121 to the nth control unit 121n may be included. The control unit 110 is applied to each patch according to the antenna control information set in advance with respect to the distance, beam width, and direction (the direction is already determined by the scanning wave) of the vehicle determined by the received power information transmitted from the vehicle 200. The size and/or phase information for the transmission may be transmitted to the first control unit 121 to the nth control unit 121n to generate a power transmission wave for wireless power transmission.

The power source 101 includes a phase locked loop (PLL), a power amplifier, an inverter, and a power divider to maintain a constant frequency of a signal. It is possible to supply power having phase and magnitude.

On the other hand, the transmitting and receiving processing unit 120 detects the size and phase of the power transmission wave finally supplied to the patch antennas 131 to 131n or receives the location detecting wave transmitted from the vehicle through each patch antenna 131 to 131n. The power detection unit 125 may be further included. The received power detection unit 125 may be formed of a coupler, and the detected power transmission wave or position detection wave may be input to the control unit 110 through the first control unit 121. Here, the position detection wave may be generated by the vehicle 200 and input to the antenna array 130 of the power transmission device 100 through the power reception antenna.

Therefore, the power transmission apparatus 100 can efficiently transmit the maximum power to the vehicle by determining the location of the vehicle using the received power information transmitted from the vehicle receiving the scanning wave and controlling beamforming according to the preset antenna control information. have. In addition, the power transmission apparatus 100 determines that there is an obstacle in the irradiation angle (direction) at which reception power lower than the reference value of the preset reception power is received by the scanning wave, and determines that there is an obstacle and transmits power so that the power transmission wave is not radiated in the corresponding direction. The beam width of the wave can be controlled. Hereinafter, various embodiments using the position detection wave will be described in detail with reference to FIGS. 4A to 7B to prevent power consumption and to quickly determine the position in determining the position of the vehicle for wireless power transmission.

4A to D are conceptual diagrams and flowcharts for explaining a process of finding a vehicle by minimizing an irradiation range during scanning according to an embodiment of the present invention.

Referring to Figures 4a and 4d, the power transmission device 100 is an antenna for detecting the position of the radiation emitted from the vehicle without the need to first emit the scanning wave for determining the position of the vehicle 200 in Figures 1 and 2 described above By receiving through the array 130, it is possible to accurately grasp the position of the power receiving antenna 230. Therefore, the power transmission device 100 does not need to consume power according to the emission of the scanning wave, and rapidly detects the power size of the position detection wave input to the antenna group consisting of at least one or more patches, thereby rapidly receiving the power reception antenna 230 ) Can be determined.

First, the power transmission device 100 maintains a state of waiting for reception of the position detection wave (S401). When it is determined that wireless charging is necessary, the vehicle 200 radiates a position detection wave through the power receiving antenna 230, and each antenna group of the antenna array in a path of W1, W2, W3, W4, W5 ( A1, A2, A3, A4). For explanation, the position detection waves are indicated as W1 to W5, but it is natural that the position detection waves are input to each patch antenna constituting the antenna array. Here, the antenna groups A1, A2, A3, and A4 may be preset in a direction in which power transmission waves are to be radiated in advance according to antenna control information preset in the memory. When the reception power of the position detection wave inputted through the reception power detection unit 125 is greater than a preset reference power, the wireless transmission device 100 sequentially operates the antenna groups A1, A2, A3 and A4. By controlling, it is possible to detect the received power size for each antenna group (A1, A2, A3, A4) (S402). The wireless transmission apparatus 100 continuously compares the magnitude, phase, and detection time information of the received power for each detected antenna group (A1, A2, A3, A4), and the antenna group having the largest received power of the position detection wave ( A2) can be determined and compared with preset antenna control information to determine a direction to emit the power transmission wave. Meanwhile, the wireless transmission apparatus 100 determines the distance of the power receiving antenna by using the maximum received power size of the position detection wave received by the plurality of patch antennas in the determined antenna group A2 and distance information according to the preset radiation power. It can be (S403). Next, the wireless transmission apparatus 100 forms a power transmission wave B according to the direction and distance determined through a plurality of patch antennas formed of the antenna group A2 to rapidly power the power reception antenna of the vehicle 200. It may be transmitted (S404).

4B, even when the direction and distance of the power receiving antenna 230 are determined by S401, S402, and S403 of FIGS. 4B (A) and 4C, the wireless transmission device 100 may receive a more accurate power receiving antenna 230 In order to determine the direction of ), scanning waves b1, b2, b3, b4, and b5 having a limited irradiation range may be generated and radiated by the entire patch antenna or the antenna group A2. 4B (B) and 4D, the wireless transmission device 100 is connected to the antenna group A2 without having to scan to change the irradiation angle of the scanning wave in the entire range of -180° to +180°. In this way, the scanning waves b1, b2, b3, b4, and b5 are radiated only in a limited irradiation range specified in advance, and the received power received from the vehicle can be used to more accurately reset the direction and distance of the power transmission wave. . Thereafter, the wireless transmission apparatus 100 may rapidly transmit power to the power reception antenna 230 by forming a power transmission wave through the antenna arrays according to the reset irradiation direction, beam width, and distance (S409). In FIGS. 4A to 4D, one vehicle has been described, but the present invention is not limited thereto, and wireless power transmission is possible for two or more vehicles at the same time, and this will be described with reference to FIGS. 5 and 6.

5 is a conceptual diagram showing the number and beam width of a power transmission wave according to the number and location of a vehicle according to an embodiment of the present invention, and FIG. 6 is center distance information for a plurality of aircraft according to an embodiment of the present invention A conceptual diagram for explaining the process of controlling the irradiation range and number of scanning waves using.

Referring to FIG. 5, even when the direction and distance of the vehicle 200 are determined by S401, S402, and S403 of FIG. 4C, the wireless transmission device 100 may receive power antennas 230 of a plurality of vehicles 200a and 200b. ) To determine the direction for simultaneous transmission, multiple scanning waves (b) having a limited irradiation range can be generated and radiated by the entire patch antenna or the antenna group (A2). The wireless transmission apparatus 100 determines the beam width information and adjusts the beam width of the power transmission wave B by using the received power received from each of the plurality of aircraft 200a and 200b by each scanning wave, so that one of the plurality of aircraft is controlled. It can transmit the power transmission wave of (see Fig. 5 (a)), or two power transmission waves having different paths (see Fig. 5 (b)).

Referring to (a) of FIG. 6, when the center distance information between the vehicles is not transmitted, the wireless transmission apparatus 100 scans a plurality of beams sequentially changing the beam irradiation angle in the range of -180° to +180°. When scanning through (b1 to b6), there is a problem that not only does it consume a lot of power, but it also takes a long scanning time.

Referring to (b) of FIG. 6, a plurality of air vehicles 200a and 200b calculate distances between air vehicles through communication, and generate center distance information 291 using the calculated distances to transmit power 100 Can be transferred to. Therefore, when the wireless transmission apparatus 100 receives the received power information and the center distance information from the first vehicle 200a receiving the radiated b2 scanning wave by radiating a scanning wave of b1 and moving by a preset irradiation angle, It can be determined that only the second vehicle 200b is located at a distance from the first vehicle 200a by a center distance. Therefore, the wireless transmission apparatus 100 uses the center distance information, and the subsequent scanning range centers on the first vehicle 200a without the need to radiate the scanning waves of b3, b4, b5, and b6 of FIG. 6(a). As a result, the received power information can be quickly received from the second vehicle 200b by radiating only the scanning wave b7 newly set to the irradiation distance at a position that is a distance away from the center distance. Referring to (c) of FIG. 6, the location of the two vehicles is determined by radiating only the minimum scanning wave using the center distance and the beam width is adjusted accordingly to minimize power consumption and rapidly transmit wireless power to multiple vehicles at the same time. It can emit power transmission waves that can.

7 is a conceptual diagram for continuously transmitting wireless power to a vehicle through a location tracking server that tracks the location of the vehicle according to an embodiment of the present invention.

Referring to FIG. 7, the wireless transmission device may include a plurality of wireless transmission devices 100a, 100b... 100n, and may further include a location tracking server 500. The location tracking server 500 uses the operation information, GPS information, altitude information, angular velocity information, and acceleration information from the remote control device 300 to control the flight of the vehicle, and the location of the vehicle including the moving speed and the moving direction of the vehicle. Information can be generated. The location tracking server 500 is connected to the remote control device 300 and a plurality of wireless transmission devices 100a, 100b... 100n through the network 10, and a plurality of wireless transmission devices 100a, 100b... 100n), the wireless power transmission range of the corresponding wireless transmission device may be set in advance. For example, when any one of the wireless transmission devices 100a receives reception power transmitted from a vehicle by a scanning wave or a power transmission wave, or detects reception power by a location detection wave, all the received powers are preset. If it is smaller than the received power size, the flight information indicating that the vehicle 200 has deviated from the wireless power transmission range may be transmitted to the location tracking server 500. The location tracking server 500 receiving the departure information from any one wireless transmission device 100a is another wireless power transmission device capable of wireless power transmission according to the current position of the vehicle by using a preset wireless power transmission range The (100b) may be determined, and the location information of the vehicle may be transmitted to the determined wireless power transmission apparatus 100b. Therefore, the wireless power transmission device continuously generates and manages the position information of the flying vehicle in real time by the location tracking server, and another wireless power transmission device capable of wireless power transmission even if the flying vehicle is out of the wireless power transmission range. Through the wireless power transmission can be made continuously.

10 is a conceptual diagram for grasping the center position of an aircraft using a scanning wave according to an embodiment of the present invention.

Referring to FIG. 10, the wireless transmission apparatus 100 transmits wireless power by accurately determining the center position of the aircraft by radiating by forming a circular scanning wave (S) on the aircraft at a predetermined position by preset antenna control information Efficiency can be maximized. For example, referring to (a) of FIG. 10, when the received power size transmitted from the vehicle 200 by the circular scanning wave S is smaller than the preset reference power size at points B and D, the controller 110 ) Is determined not to be the center of the vehicle, and after moving the circular scanning wave to the right, it can be compared and compared with the magnitude of the received power transmitted from the vehicle again. 10(b), if the received power of B and D is larger than a preset reference power size by the moved circular scanning wave, the controller 100 determines that it is the center of the vehicle, and scans at this time. It can be determined that the direction of the wave is the direction for emitting the power transmission wave. Therefore, the control unit can increase the efficiency of the wireless power transmission by radiating a power transmission wave capable of accurately transmitting the wireless power to the center of the vehicle by using the determined direction and the distance of the moving object according to the received power size.

In the above, the present invention has been described in detail through representative embodiments, but those skilled in the art to which the present invention pertains can make various modifications within the limits without departing from the scope of the present invention. Will understand.

Therefore, the scope of rights of the present invention should not be limited to the described embodiments, and should be determined not only by the claims to be described later, but also by the claims and equivalents.

100: power transmission device 101: power source
110, 210, 310: control unit 120: transmission and reception processing unit
122: phase shifter 123: attenuator
124: amplification section 125: receiving power detection section
130: antenna array 131: patch antenna
140,240,340: Communication unit 150: Memory
200: Aircraft 230: Power receiving antenna
250: sensor unit 201: charging unit
300: remote adjustment device 330: operation unit
400: driving part
1000: wireless power transmission and reception system

Claims (10)

In the wireless power transmission device for aircraft,
Antenna array,
Communication unit that receives the received power information from the aircraft,
A driving unit including a horizontal rotating unit connected to one side of the antenna array and a vertical rotating unit connected to the horizontal rotating unit, and
In order to determine the position of the vehicle through the antenna array, each scanning wave is radiated in a preset irradiation direction, and the received power transmitted from the vehicle receiving each scanning wave is compared with a preset received power size, and It includes a control unit for determining the distance and beam width, and controls to emit a power transmission wave according to the determined distance and beam width,
The communication unit receives the vehicle operation information from the remote control device for controlling the vehicle from the ground,
The control unit controls the horizontal rotation unit and the vertical rotation unit of the driving unit to change the direction of the antenna array according to the operation information of the vehicle and determine that the vehicle is moving when the received power transmitted from the vehicle changes. Wireless power transmitter.

delete According to claim 1,
The received power information further includes center distance information between at least two aircraft,
The controller uses the center distance information to control the irradiation range and number of scanning waves.
The method of claim 3,
Further comprising a position tracking server for generating the position information of the vehicle including the moving speed and direction of the vehicle using the operation information, GPS information, altitude information, angular velocity information and acceleration information received from the control device,
When all received power sizes received from the vehicle are smaller than a preset received power size, the control unit transmits departure information indicating that the aircraft has deviated from the wireless power transmission range to the location tracking server,
The management server receiving the departure information transmits wireless power transmission for the vehicle, characterized in that it transmits the location information of the aircraft to another wireless power transmission device for transmitting wireless power to the vehicle using the location information of the vehicle. Device.
In the wireless power transmission device for aircraft,
Antenna array,
Communication unit that receives the received power information from the aircraft,
A driving unit including a horizontal rotating unit connected to one side of the antenna array and a vertical rotating unit connected to the horizontal rotating unit, and
Receive a position detection wave from the vehicle through the antenna array, compare the received power size of the location detection wave received by each patch antenna with a preset received power size, determine the distance and beam width of the vehicle, and determine the It includes a control unit for controlling to emit a power transmission wave according to the distance and beam width,
The communication unit receives the vehicle operation information from a remote control device that controls the vehicle from the ground,
The control unit controls the horizontal rotation unit and the vertical rotation unit of the driving unit to change the direction of the antenna array according to the operation information of the vehicle and determine that the vehicle is moving when the received power transmitted from the vehicle changes. Wireless power transmitter.
The method of claim 5,
The antenna array forms at least two or more antenna groups composed of a plurality of patch antennas,
The control unit determines the antenna group having the largest received power of the location detection wave, and controls the antenna group to generate a power transmission wave in a predetermined direction to the determined antenna group.
The method of claim 5 or 6,
The control unit is a wireless power transmission apparatus characterized in that the electromagnetic waves are radiated from each patch antenna with a time delay according to a difference in time at which the position detection wave is received at each patch antenna.
The method of claim 6,
The control unit
A wireless power transmission apparatus characterized by radiating a scanning wave within a predetermined direction range to the determined antenna group and resetting the direction and distance of the power transmission wave by using the received power received from the vehicle.
The method of claim 5,
The received power information further includes center distance information between at least two aircraft,
The controller uses the center distance information to control the irradiation range and number of scanning waves.
delete

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