KR20210044389A - Drone stadium system capable of transmitting wireless power using camera - Google Patents

Abstract

The present invention provides a wireless power transmission available drone arena system using a camera image, which comprises: a distance sensor for measuring a distance from a floor of an arena; an antenna array composed of a plurality of patch antennas to generate reception and transmission of a power line; and a control unit controlling generation of reference reception and transmission of the power line according to the measured distance from the distance sensor to transmit power to a drone in an arena. According to the present invention, wireless power is transmitted to the drone participating in a game, thereby fundamentally preventing replacement and operational failure due to battery consumption during a predetermined game period by performing continuous charging in the game.

Description

A drone stadium system capable of wireless power transmission using camera images {DRONE STADIUM SYSTEM CAPABLE OF TRANSMITTING WIRELESS POWER USING CAMERA}

The present invention relates to a drone stadium system capable of wireless power transmission, and more particularly, to a drone stadium system using a camera image capable of transmitting wireless power to a drone participating in a game using a camera image.

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 portable devices such as smartphones and notebook computers is increasing, and the use of the mobile devices for a long time is naturally avoided. There is a demand for power supply for this. In supplying power to such a portable device, the user is inconvenient in having to charge the battery using a commercial power source every time. In particular, with the development of IoT as the fourth industry and the increasing use of smart sensors in smart factories, technologies are emerging to supply power to portable devices and smart sensors using wireless power transmission that combines IT and energy technologies.

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 reception method is a method of receiving power by converting radio waves radiated through a transmitter antenna into direct current using a rectifier circuit, and may be used for relatively long-distance power transmission.

Drones can be controlled by radio waves by remote control devices on the ground, and include cameras, sensors, and communication systems, and are used in various fields such as leisure, surveillance, and industrial use.

Meanwhile, drones have recently expanded into the field of sports and entertainment, and drone soccer is active. In drone soccer, a goal is recognized when the drone passes through a circular goal located about 3m from the ground, and the game time is generally composed of 3 sets of 3 minutes each. Since the drone ball used for drone soccer must be surrounded by a protective frame surrounding the outside of the drone, it is used in a soccer game in a heavier state than the drone itself. There is an inconvenience of having to replace it with a drone.

As a prior art related to the drone stadium, there is a game system using a drone of Korean Patent Publication No. 10-2018-0025792. The prior art includes a stadium structure, a reference gymbold drone provided to be able to fly inside the stadium structure, and the reference gymball drone provided to be able to fly on one side and the other side of the stadium structure, respectively, based on the reference gymbold drone. A gimbal drone consisting of a gimbol drone and a gimbol drone on the other side that collides with a drone and moves the reference gimbol drone, and a through hole through which the reference gimbol drone passes are formed on one side and the other side of the stadium A control unit that calculates a score for passing the reference gymbold drone through the through hole of the goalpost frame based on the detection signal of the goal post frame that is the goal post frame, and It is made including.

However, the prior art only discloses a configuration related to score acquisition when the reference gymbold drone touches the screen or passes through the goal frame, but does not disclose a configuration that solves the problem caused by the power consumption of the drone during a soccer game. .

Therefore, it is necessary to develop a drone stadium system to solve the inconvenience of replacement or inoperability due to battery consumption during the game by transmitting wireless power to drones participating in the game.

1. Republic of Korea Patent Publication No. 10-2018-0025792 (2018.03.09)

The present invention was conceived to solve the above-described problem, and an object of the present invention is to solve the inoperability due to battery consumption during the game or inconvenience caused by replacement by transmitting wireless power to the drone participating in the game. It is to provide a drone stadium system capable of transmitting wireless power that can transmit wireless power to drones participating in the program.

In order to solve the above problems, a drone stadium system capable of wireless power transmission using a camera image according to an embodiment of the present invention comprises a distance sensor for measuring the distance to the stadium floor, and an antenna that generates power transmission waves. It may include a control unit that controls the generation of the reference power transmission wave according to the distance measured from the distance sensor so as to transmit power to the array and the drone 200 in the stadium.

According to an aspect of an embodiment of the present invention, a camera capable of photographing a drone in a stadium is further included, and the control unit determines the location of the drone through an image matrix in which an image photographed from the camera is matched with the size of the stadium floor. It is characterized by that.

According to one aspect of an embodiment of the present invention, the control unit is characterized in that the control unit determines the location of the drone by receiving the drone location information received from the remote control device of the drone.

According to an aspect of an embodiment of the present invention, the control unit determines that a drone group is a drone group when there are more than a preset number of drones in a predetermined area using the drone location, and the group power is in the area containing the drone group. It is characterized in that the control to generate and radiate a transmission wave.

According to an aspect of an embodiment of the present invention, a plurality of antenna arrays may be installed on the top of the stadium according to the size of the stadium, and the control unit controls each antenna array to divide the space of the stadium and radiate a reference power transmission wave. Characterized in that.

According to the present invention as described above, by transmitting wireless power to a drone participating in a game, it is possible to fundamentally prevent inoperability and replacement due to battery consumption during a predetermined game time by continuously charging during the game.

Therefore, players who participate in drone soccer can freely enjoy drone soccer without anxiety about battery consumption, and as the battery problem disappears, the current drone soccer game time is increased so that spectators can also watch the vivid drone soccer game where the game is not ending. I can.

1A and 1B are schematic diagrams of a drone stadium system capable of transmitting wireless power according to an embodiment of the present invention.
2 is a block diagram illustrating 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 transmission apparatus for a drone, a drone, and a control apparatus according to an embodiment of the present invention.
4 is a schematic diagram illustrating wireless power transmission according to a drone group detection according to an embodiment of the present invention.
5 is a flowchart illustrating a wireless power transmission process to a drone stadium according to an embodiment of the present invention.
6 is a conceptual diagram illustrating a process of determining a location of a drone through a camera image matrix according to an embodiment of the present invention.

The detailed description below is merely an example, and merely illustrates an embodiment of the present invention. In addition, the principles and concepts of the present invention are provided for the purpose of being most useful and easy to explain.

Accordingly, it is not intended to provide a detailed structure more than necessary for a basic understanding of the present invention, as well as various forms that can be implemented in the substance of the present invention by those of ordinary skill in the drawings are exemplified through the drawings.

Hereinafter, the configuration and operation of a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1A and 1B are schematic diagrams of a drone stadium system capable of transmitting wireless power according to an embodiment of the present invention.

Referring to FIG. 1A, a drone stadium system 1000 capable of transmitting wireless power using a camera image includes a distance sensor 150 for measuring a distance to the stadium floor, a game space 1 for drone soccer, and the game space ( In 1), it includes a wireless power transmitter 100 capable of transmitting wireless power to a drone in competition.

The wireless power transmitter 100 is located in the upper center of the game space 1 and may measure altitude information between the wireless power transmitter and the floor when initially set. The wireless power transmitter 100 may supply wireless power to the drone 200 moving on the charging area CA1 by setting a charging area CA1 for transmitting wireless power according to altitude information. The configuration of the wireless power transmitter 100 will be described in detail with reference to FIG. 2. When a drone group is detected using beamforming, the wireless power transmitter 100 may transmit wireless power to a group space CA2 in which the drone group is located.

Referring to FIG. 1B, the wireless power transmitter 100 is divided into two parts based on the center of the stadium, and each antenna array divides the charging area into two areas (CA1a, CA1b) according to the measured altitude information. Thus, it can transmit wireless power to the drone. Since the two areas CA1a and CA1b are areas with low frequency of movement of drones in the central area, efficient wireless power transmission can be performed by intensively setting a charging area for wireless power transmission in an area with a circular goalpost. Here, the charging area (CA1, CA1a, CA1b) and the group space (CA2) in which the drone group is located can also be understood as a radiation range of a power transmission wave for transmitting wireless power from the wireless power transmitter 100 to the drone. have. In FIGS. 1A and 1B, one or two antenna arrays in the game space are described as the wireless transmission device 100, but the present invention is not limited thereto, and has a plurality of antenna arrays that can transmit wireless power to the game space. It would be natural that a wireless transmission device could be deployed.

Hereinafter, the wireless power transmission apparatus 100 will be described, and wireless power transmission capable of maximizing wireless power transmission efficiency according to the detection of a drone group will be described.

2 is a block diagram illustrating 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 amplifying unit 124, an attenuator 123, a phase shifter 122, and a first control unit 121.

The transmission/reception processing unit 120 may be formed in plural to control the phase and magnitude of the signal supplied to each of the patches 131 to 131n, and the control unit 110 is for controlling each transmission/reception processing unit 120, respectively. It may include a first control unit 121 to an n-th control unit 121n. The control unit 110 receives the size and/or phase information for each patch according to the antenna control information preset for the distance (altitude) and the vertical direction to the stadium floor by the distance sensor 150. 121) to the n-th control unit 121n to generate a power transmission wave for wireless power transmission in the charging area CA1.

The power source 101 includes a phase locked loop (PLL) for maintaining a constant frequency of a signal, a power amplifier, an inverter, a power divider, etc. to each transmit/receive processing unit 120 with a predetermined frequency, Power with phase and magnitude can be supplied.

The transmission/reception processing unit 120 may further include a reception power detection unit 125 capable of detecting the magnitude and phase of the power transmission wave supplied to the patch antennas 131 to 131n. The received power detection unit 125 may be formed of a coupler, and the detected power transmission wave may be input to the control unit 110 through the first control unit 121.

Therefore, the power transmission device 100 forms a power transmission wave to radiate to the charging area according to the height of the stadium through the distance sensor, or determines the position of the drone and determines whether a drone group is formed, and beamforming according to the preset antenna control information. The maximum power can be efficiently transmitted to the drone by controlling it.

3 is a block diagram of a wireless power transmission apparatus, a drone, and a control apparatus according to an embodiment of the present invention.

As shown in FIG. 3, the wireless power transmitter 100 includes a distance sensor 150 for measuring the distance to the stadium floor, an antenna array 130 for generating a power transmission wave composed of a plurality of patch antennas, and in the stadium. It may include a control unit 110 that controls the generation of the power transmission wave to transmit power to the drone 200 in the presence.

The antenna array 130 may have various antenna structures and shapes for radiating electromagnetic waves in a manner in which a plurality of patches are arranged in various directions. The transmission/reception processing unit 120 adjusts at least one or two or more of the size, phase, and operation status of a signal supplied to each patch of the antenna array 130 under the control of the control unit 110 to provide a predetermined size and direction. And it is possible to generate a power transmission wave having a beam width. Here, the power transmission wave is defined as an electromagnetic wave for transmitting power to the drone 200 in the stadium.

The power transmission wave is a reference power transmission wave (CA1, CA1a, CA1b) capable of transmitting wireless power to the entire moving range of the drone in the stadium according to the reference distance when the wireless power transmission device is set by the distance sensor 150. And a group power transmission wave (CA2) capable of transmitting wireless power to an area in which the drone group is located when the location of the drone is determined and the number of drones at the location is greater than or equal to a preset number.

Regarding the position determination of the drone in the stadium, the drone stadium system 1000 capable of transmitting wireless power using a camera image may further include a camera 50 capable of photographing a drone in the stadium. The controller 110 of the wireless power transmission apparatus 100 may determine the location of the drone through an image matrix obtained by matching the image captured by the camera 50 with the size of the stadium floor. 6 is a conceptual diagram illustrating a process of determining a location of a drone through a camera image matrix according to an embodiment of the present invention in connection with determining the location of a drone through a camera image. Referring to FIG. 6, the radiation range X of the power transmission device 100 and the image range X of the camera 50 may be adjusted to match. For example, the radiation range (X) of the power transmission device 100 is controlled by controlling the magnitude and phase of the electromagnetic wave radiated through the antenna array, and moving the camera 50 up, down, left and right in a preset state, through zooming in or zooming out. It can be adjusted to have the same image range (X) as the radiation range (X). The image range X may be set to have a predetermined height from the ground so as to acquire images of all electronic devices located indoors. The image acquired from the camera 50 is partitioned within the horizontal (X) and vertical (Y) image ranges, and the partitioned area is an image having respective coordinate values (X1Y1, X1Y2,......X8Y8). It can be made up of a matrix. Meanwhile, each of the coordinate values (X1Y1, X1Y2, ...X8Y8) of the image matrix is each patch of the antenna array to generate a group power transmission wave 510 set in advance according to the corresponding coordinate value. It may be matched with the antenna 131 or the antenna groups A1, A2, A3, and A4 made up of a plurality of patch antennas. The controller 110 determines that X2Y3, X4Y4, X3Y4 and X3Y6 are drone groups in the image matrix 500 in the video matrix 500, and generates and radiates a group power transmission wave to the drone group. Can be controlled.

4 is a schematic diagram showing wireless power transmission according to the detection of a drone group according to an embodiment of the present invention. Referring to FIG. 4, the attacker's drone around the goal post 2 in the stadium is prevented from passing through the goal post 2. Defender drones 200 are located and the game is often played. Therefore, the wireless power transmitter 100, which confirmed the position of the drone 200 acquired from the camera 50, in the stadium through the image matrix (see Fig. 6), is determined to be a drone group because three drones are gathered. And, it is possible to increase the wireless power efficiency by generating and radiating the group power transmission wave (CA2) at the corresponding location. This is because the group power transmission wave CA2 has a narrower radiation range than the reference power transmission wave CA1, and thus wireless power having higher energy can be transmitted.

The control unit 110 may use antenna control information previously stored in a memory so as to transmit wireless power according to the reference power transmission wave and the group power transmission wave. The antenna control information is control information on the magnitude, phase, and operation of signals supplied to each patch of each antenna array, and beamforming to generate power transmission waves by interference and reinforcement of electromagnetic waves radiated from each patch antenna. Can be understood as information. The wireless power transmission apparatus 100 may be formed by a beamforming technique that controls the reference power transmission wave and the group power transmission wave to be generated by mutual reinforcement and interference of electromagnetic waves radiated from each patch of the antenna array 130. Beamforming techniques according to various types of antenna structures and changes in impedance may be performed by various known methods, and the present invention is not limited to a specific beamforming technique.

Referring back to FIG. 3, the drone 200 includes a power receiving antenna 230 that receives a power transmission wave, a power conversion unit 220 that rectifies the received scanning wave or power transmission wave and converts it to DC, and the converted It includes a charging unit 201 for charging direct current and a control unit 210 for controlling charging, generating received power information of a power transmission wave, and then transmitting the received power information to the power transmission device 100 through the communication unit 240.

The control unit 210 monitors the power information charged in the charging unit 201, and when the charging power is less than the preset minimum power, determines that charging is necessary, and transmits the charging request information to the power transmission device 100 through the communication unit 240. ).

The drone 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. It may include at least one or more sensors such as. The controller 210 of the drone 200 processes the GPS information, altitude information, angular velocity information, and acceleration information, and transmits location information including the speed, direction, and inclination of the drone in the current space to the ground through the communication unit 240. It can be transmitted to the remote control device 300 of.

The remote control device 300 includes an operation unit 330 receiving operation commands such as ascending, lowering, rotating, and moving the drone 200 through a joystick or a navigation stick, and the drone operation information according to the operation of the operation unit 330. It may include a control unit 310 that generates and controls the drone operation information to be transmitted to the drone 200. The control unit 310 of the remote control device 300 can control the drone operation information to be transmitted to the power transmission device 100 in real time, and the power transmission device 100 is the drone 200 of the received drone operation information. When it is determined that the drone is located in the current stadium using the location information of and it is determined that more than a preset number of drones are gathered to form a group, a group power transmission wave can be generated and radiated at the corresponding location. For example, the power transmission device 100 uses drone operation information including the location information of the drone to continuously determine whether a drone is in a group, and generates a group power transmission wave and radiates it to a corresponding location, thereby transmitting wirelessly to the drone. It is possible to increase the power transmission efficiency.

5 is a flowchart illustrating a wireless power transmission process to a drone stadium according to an embodiment of the present invention.

Referring to FIG. 5, the wireless power transmitter measures the distance to the stadium floor by a distance sensor (S51), generates charging area information according to the distance measured in the vertical direction (S53), and provides wireless power to the charging area. Generates and radiates a reference power transmission wave capable of transmitting (S55). Subsequently, if the drones are gathered more than a preset number during the game by continuously using images of drones in the stadium or receiving drone location information received from the drone's remote control device, it is determined as a drone group (S57). , The group power transmission wave is generated and radiated according to the positions of the drones included in the drone group (S59).

Accordingly, in the present invention, the drone can be charged through wireless power even during the game, so that the game can be played for a longer time, so that the spectator can watch the exciting game in which the game is not stopped.

In the above, the present invention has been described in detail through exemplary embodiments, but those of ordinary skill in the art to which the present invention pertains have found that various modifications can be made to the above-described embodiments without departing from the scope of the present invention. I will understand.

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

1: Match space 50: Camera
100: power transmission device 101: power source
110,210: control unit 120: transmission/reception processing unit
122: phase shifter 123: attenuator
124: amplification unit 125: received power detection unit
130: antenna array 131: patch antenna
140,240,340: Ministry of Communications
200: drone 230: power receiving antenna
250: sensor unit 201: charging unit
300: remote control device 330: control unit
500: Video Matrix 1000: Drone Arena System

Claims (5)

Distance sensor to measure the distance to the stadium floor,
An antenna array consisting of a plurality of patch antennas and generating power transmission waves
A drone stadium system capable of wireless power transmission using a camera image comprising a control unit for controlling generation of a reference power transmission wave according to a distance measured from the distance sensor to transmit power to a drone in the stadium.
The method of claim 1,
It further includes a camera that can shoot drones in the stadium,
The controller is a drone stadium system capable of transmitting wireless power using a camera image, characterized in that the control unit determines the location of the drone through an image matrix obtained by matching the image captured from the camera with the size of the stadium floor.
The method of claim 1,
The controller is a drone stadium system capable of transmitting wireless power using a camera image, characterized in that the control unit determines the location of the drone by receiving the drone location information received from a remote control device of the drone.
The method according to claim 2 or 3,
The controller determines that a drone group is a drone group when there are more than a preset number of drones in a predetermined area using the drone location, and controls to generate and radiate a group power transmission wave in the area including the drone group. A drone stadium system capable of wireless power transmission using camera images.
The method of claim 1,
A plurality of antenna arrays may be installed on the top of the stadium according to the size of the stadium,
The controller is a drone stadium system capable of transmitting wireless power using a camera image, characterized in that the control unit controls each antenna array to divide the space of the stadium to emit a reference power transmission wave.

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