Device for accurate positioning of return flight of unmanned aerial vehicle at night

Abstract

The utility model relates to the technical field of unmanned aerial vehicle auxiliary equipment, in particular to a device for accurate positioning of return flight of an unmanned aerial vehicle at night, which comprises a positioning plate and a display driving device which are in wired connection, and a driving control assembly comprises an MCU (Microprogrammed Control Unit) main control unit, a return flight sign image storage unit and a return flight sign image display driving unit; image data transmitted from an upper computer is received based on an MCU main control unit, the MCU main control unit can analyze the image data and store the image data in a homeward voyage sign image storage unit, and the homeward voyage sign image storage unit adopts an EMMC as a storage medium and can store various different homeward voyage sign images at one time. The method is suitable for homeward voyage identification of different unmanned aerial vehicles; and the display driving equipment drives the display screen on the positioning plate through the return mark image display driving unit.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle auxiliary equipment, in particular to a device for accurate positioning of a returning unmanned aerial vehicle at night. Background Art

[0002] The key technology commonly used for drones to return to home is global positioning and navigation technology. Drones are usually equipped with global positioning systems and inertial measurement units. During the automatic return of drones, the drone first needs to determine its own position and return route. The drone can return home through the latitude and longitude information provided by the global positioning system. Since the positioning accuracy of the civil global positioning system is 10 meters, and can reach 1 meter under good conditions, accurate positioning cannot be achieved in some applications that require precise positioning, so a method is needed to assist the drone in accurately positioning and landing after returning.

[0003] The traditional auxiliary positioning method uses a positioning plate with a positioning image printed on it. The camera on the drone recognizes the image on the positioning plate for positioning. In nighttime use, this device is usually self-luminous or guided by the drone's lighting to identify the device and land. However, in reality, the visibility of drones is poor during nighttime flight. It is impossible to observe the trajectory and status of the drone visually, and thus it is impossible to accurately drive the drone to land. Since the positioning image is printed on the positioning plate, the positioning image is usually in a single mode and the image cannot be easily changed.

[0004] In view of this, the utility model provides a device for accurately positioning a returning unmanned aerial vehicle at night. Utility Model Content

[0005] The purpose of the utility model is to provide a device for accurately positioning a returning unmanned aerial vehicle at night, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for accurate positioning of a nighttime UAV return flight, comprising a positioning board and a display driving device connected by wire, wherein the display driving device can drive a display screen in the center of the positioning board to display a navigation image;

[0007] The positioning plate comprises a rollable panel arranged on a bottom layer, and a display screen and a magnetic component are mounted on the rollable panel;

[0008] The display driving device includes a power supply component and a drive control component fixed in the housing and sealed and fixed by an upper cover plate. The power supply component supplies power to the drive control component.

[0009] The drive control component includes an MCU main control unit, a return mark image storage unit, and a return mark image display drive unit; based on the MCU main control unit receiving image data transmitted from the host computer, the MCU main control unit can parse the image data and store the image data in the return mark image storage unit. The return mark image storage unit uses EMMC as a storage medium and can store a variety of different return mark images at one time, which is suitable for return identification of different drones; the display drive device drives the display screen on the positioning board through the return mark image display drive unit.

[0010] As a preferred embodiment of the utility model, the rollable panel is a flexible rubber pad, the rollable panel is a regular square, a display screen is installed in the center of the rollable panel; the magnetic components are fixed at the four corners of the positioning plate.

[0011] As a preferred implementation manner of the present invention, the display screen adopts a flexible and rollable AMOLED screen.

[0012] As a preferred implementation of the utility model, the display driving device is connected to the display screen via a driving FPC line, and the driving FPC line of the display screen is attached to the upper part of the rollable panel.

[0013] As a preferred embodiment of the utility model, the magnetic component includes a magnet, which forms a magnetic sensing area with the Hall sensors on the four cantilevers of the drone.

[0014] As a preferred embodiment of the utility model, the drive control component includes a power management unit, which implements the charging management function of the power supply component. The PMIC chip in the power management unit is powered by the power supply component and converts the power into the voltage required by each unit in the drive control component. When the display driver device is not connected to the positioning board or the host computer, the display driver device is in sleep mode to maintain the power supply of the system.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is a drone return positioning device that comprehensively uses methods such as images and magnetic fields to display the navigation image stored in the display driver device on the display screen of the positioning board. When the drone lands, it can recognize the image on the positioning board and simultaneously measure the magnetic field data of the positioning board through the Hall sensors on the four cantilevers for precise positioning.

[0016] The display driver device can be connected to the host computer, import images through the host computer, and store the images in the return mark storage unit in the display driver device. When the display driver device is connected to the positioning board, the display driver device can display the images stored in the display driver device on the display screen of the positioning board. The display screen is bent and stored with the rubber pad, and can also display any image, which is more flexible than the traditional positioning board with fixed printed return images. The recognition effect of the drone can be improved by setting parameters such as display brightness and contrast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of the return positioning device in the reel state of the utility model;

[0018] Figure 2 This is a structural diagram of the return-to-home positioning device of the utility model in the unfolded state;

[0019] Figure 3 It is an exploded structural diagram of the display driving device of the utility model;

[0020] Figure 4 This is a system structure diagram of the display driving device of the utility model;

[0021] Figure 5 This is the structural diagram of the positioning plate of the utility model;

[0022] In the figure: 100, positioning plate; 101, rollable panel; 102, display screen; 103, magnetic component; 104, drive FPC line; 2, display drive device; 201, housing; 202, power supply component; 203, drive control component; 204, upper cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example 1

[0027] See also Figure 1-5 The utility model provides a technical solution: a device for accurate positioning of a nighttime UAV return flight, comprising a positioning board 1 and a display driving device 2 connected by wires, wherein the display driving device 2 can drive a display screen 102 in the center of the positioning board 1 to display a navigation image, and can adjust parameters such as the brightness and contrast of the image to improve the recognition effect of the UAV; wherein:

[0028] The positioning plate 1 is a rollable panel 101 with a display screen 102 and a magnetic component 103;

[0029] like Figure 5 As shown, the positioning plate 1 is mainly composed of three parts. The bottom layer is a rollable panel 101 with a thickness of about 3 mm. The rollable panel 101 is a flexible rubber pad. The rollable panel 101 is a square with a thickness of about 3 mm and a length and width of 40 cm. Four magnetic components 103 are fixed at the four corners of the positioning plate 1. The display screen 102 adopts a flexible rollable AMOLED screen with a length and width of 25 cm. The positioning plate 1 has two structural states, such as Figure 2 The figure shows the positioning plate in the unfolded state when in use. Figure 1 The positioning plate is shown in its curled-up storage state when not in use.

[0030] The driving FPC line 104 of the display screen is attached to the upper part of the flexible rubber pad. The driving FPC line 104 can connect the display driving device 2 and the display screen 102, so that the display screen 102 can display the return sign image under the drive of the display driving device 2. The display screen 102 is an AMOLED display screen. The AMOLED display screen has a wide color gamut, the colors look more diverse, and can restore more real colors. The contrast of the displayed image can be effectively improved, which is beneficial to the image recognition of the drone. The AMOLED display screen has lower energy consumption. The display driving device 2 can drive the AMOLED display screen for a long time and can be driven continuously for up to 24 hours.

[0031] Four magnetic components 103 are fixed at the four corners of the positioning plate. When the drone lands, the Hall sensors on the four cantilevers of the drone will change their positions in the magnetic fields of the four magnetic components due to displacement, which will cause the output current of the Hall sensors on the cantilevers of the drone to change, thereby calculating the precise relative position of the drone relative to the positioning plate and guiding the drone to gradually approach the positioning plate to land.

[0032] The display driving device 2 includes a driving control component 203 and a chargeable and dischargeable power supply component 202;

[0033] Specifically and exemplarily, the display driver device 2 can be connected to a host computer, and the required navigation image can be imported into the return annotation storage unit inside the display driver device 2 through the host computer, and the power supply component 202 inside the display driver device 2 can be charged through the USB interface of the host computer or an external charging device. The display driver device 2 is connected to the display screen 102 on the positioning board 1 through a wire, so as to display a specific navigation image imported from the host computer.

[0034] This embodiment provides a positioning board 1 with a display screen that can display different navigation images and a display driving device 2, which integrates image display and recognition technology, magnetic field measurement and positioning technology to assist the accurate positioning of the UAV when returning.

[0035] Display driver devices such as Figure 3 As shown, the display driving device 2 includes a power supply component 202 and a driving control component 203 fixed in a housing 201, and sealed and fixed using an upper cover plate 204. The power supply component 202 supplies power to the driving control component 203.

[0036] like Figure 4 The drive control component 203 shown includes a power management unit, which implements the charging management function of the power supply component 202. The PMIC chip in the power management unit is powered by the power supply component 202 and converts the power into various voltages required by each unit in the drive control component 203. When the display driver device 2 is not connected to the positioning board 1 or the host computer, the display driver device 2 is in sleep mode to maintain the power supply of the system with the lowest power consumption.

[0037] In addition to the charging management unit, the display driving device 2 also includes an MCU main control unit, a return mark image storage unit, and a return mark image display driving unit. The MCU main control unit can receive image data transmitted from the host computer, and the MCU main control unit can parse data in formats such as JPG and PNG, and store these image data in the return mark image storage unit. The return mark image storage unit uses EMMC as a storage medium, and can store a variety of different return mark images at one time, which is suitable for different drone return identification. The display driving device 2 drives the AMOLED display screen 102 on the positioning board 1 through the return mark image display driving unit. The MCU main control unit reads the image data in the return mark image storage unit and displays the image data on the display screen 102 on the positioning board 1. When operating the drone at night, in the case of insufficient light, the display screen on the positioning board can emit light by itself and display a high-contrast navigation image. The drone can easily obtain the calibration image displayed on the positioning board through the camera, and accurately calculate the landing position by measuring the magnetic field of the positioning board, so as to ensure the accurate landing of the drone at night.

[0038] Specifically, this embodiment provides a device for the precise positioning of the drone's return at night. Four magnets are fixed on the positioning plate 1. When the drone returns, it can achieve precise positioning and return by combining image recognition and magnetic field positioning. When the drone returns to the vicinity of the auxiliary positioning device through the global positioning system, the drone turns on the image recognition positioning method to make fine adjustments for the return. When the drone approaches the positioning device, the Hall sensor on the drone's cantilever can measure the magnetic field on the positioning device, calculate the distance and posture between the drone and the positioning device, thereby achieving centimeter-level positioning of the drone, guiding the drone to further perform precise positioning, and thus guiding the drone to land.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for accurate positioning of a drone returning home at night, characterized in that: It comprises a positioning board (1) and a display driving device (2) connected by wire, wherein the display driving device (2) can drive a display screen (102) at the center of the positioning board (1) to display a navigation image; The positioning plate (1) comprises a rollable panel (101) arranged on a bottom layer, and a display screen (102) and a magnetic component (103) are mounted on the rollable panel (101); The display driving device (2) comprises a power supply component (202) and a driving control component (203) fixed in a housing (201), and sealed and fixed using an upper cover plate (204), wherein the power supply component (202) supplies power to the driving control component (203); The drive control component (203) comprises an MCU main control unit, a return mark image storage unit, and a return mark image display drive unit; based on the MCU main control unit receiving image data transmitted from the host computer, the MCU main control unit can parse the image data and store the image data in the return mark image storage unit; the return mark image storage unit uses EMMC as a storage medium and can store a variety of different return mark images at one time, which is suitable for return identification of different drones; the display drive device (2) drives the display screen (102) on the positioning board (1) through the return mark image display drive unit.

2. The device for accurate positioning of a nighttime UAV return flight according to claim 1, characterized in that: The rollable panel (101) is a flexible rubber pad, the rollable panel (101) is in the shape of a square, a display screen (102) is installed in the center of the rollable panel (101), and the magnetic components (103) are fixed at the four corners of the positioning plate (1).

3. The device for accurate positioning of a nighttime UAV return flight according to claim 1, characterized in that: The display screen (102) adopts a flexible and rollable AMOLED screen.

4. The device for accurate positioning of a nighttime UAV return flight according to claim 1, characterized in that: The display driving device (2) is connected to the display screen (102) via a driving FPC line (104), and the driving FPC line (104) of the display screen is attached to the upper part of the rollable panel (101).

5. The device for accurate positioning of a nighttime UAV return flight according to claim 1, characterized in that: The magnetic component (103) comprises a magnet, and forms a magnetic sensing area with the Hall sensors on the four cantilevers of the drone.

6. The device for accurate positioning of a nighttime UAV return flight according to claim 1, characterized in that: The drive control component (203) includes a power management unit, which implements the charging management function of the power supply component (202). The PMIC chip in the power management unit is powered by the power supply component (202) and converts the power into the voltage required by each unit in the drive control component (203). When the display drive device (2) is not connected to the positioning board (1) or the host computer, the display drive device (2) is in a sleep mode to maintain the power supply of the system.

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