WO2019061387A1

WO2019061387A1 - Unmanned aerial vehicle safe landing apparatus

Info

Publication number: WO2019061387A1
Application number: PCT/CN2017/104728
Authority: WO
Inventors: 林燕凤
Original assignee: 林燕凤
Priority date: 2017-09-30
Filing date: 2017-09-30
Publication date: 2019-04-04

Abstract

An unmanned aerial vehicle safe landing apparatus, comprising a controller (1), a distance sensing apparatus (2), a speed sensing apparatus (5), a landing buffer apparatus (3), and a landing protection apparatus (4), a signal input interface of the controller (1) being electrically connected to a signal output interface of the distance sensing apparatus (2) and the speed sensing apparatus (5), and the landing buffer apparatus (3) and the landing protection apparatus (4) being electrically connected to the controller (1). The present unmanned aerial vehicle safe landing apparatus ensures that the unmanned aerial vehicle lands without being affected by the terrain and the weather, and is safe and reliable, and also ensures that the unmanned aerial vehicle is not subject to the impact of mechanical stress during the landing process, protecting the fuselage, and thereby having practical value.

Description

Unmanned aerial vehicle safety landing device

Technical field

The invention belongs to the technical field of drone landing, and particularly relates to a drone safe landing device.

Background technique

The drone, referred to as the "unmanned aerial vehicle", is a non-manned aircraft operated by radio remote control equipment and its own program control device. From the technical point of view, it can be divided into: unmanned fixed-wing aircraft, unmanned vertical take-off and landing aircraft, unmanned airships, unmanned helicopters, unmanned parachute aircraft, and so on.

The traditional drone landing methods include landing gear landing, parachute landing, air cushion landing and intercepting net recycling. Among them, the landing gear skating landing cost is high, only suitable for large drones, landing due to drones due to drone speed Faster, in the moment of landing, it is easy to generate mechanical impulse, which makes the drone damage. The trap recovery device is more complicated, the calculation accuracy is higher, the operation is difficult, and the air cushion landing buffer capacity is limited, which is only suitable for small drones.

For landing methods such as parachute landing, air cushion landing and intercepting net recycling, the common point is that the drones need remote control of the ground personnel to complete the landing, but in some mountains or cities with bad weather or complex terrain, no It is very likely that the man-machine will not receive the remote control signal, resulting in serious consequences of the "explosion machine landing".

Summary of the invention

It is an object of the present invention to provide a drone safe landing device that addresses the problems set forth above in the background art.

To achieve the above object, the present invention provides the following technical solution: a UAV safe landing device, including a controller, a distance sensing device, a speed sensing device, a landing buffer device, and a fall protection device, the controller input signal interface The interface is electrically connected to the distance sensing device and the speed sensing device output signal, and the landing buffer device and the fall protection device are electrically connected to the controller.

Preferably, the controller is internally embedded with a control module, and the control chip of the control module is an STM32 type single chip microcomputer.

Preferably, the landing buffer device comprises a fixing frame and a parachute placing frame, wherein the upper surface of the fixing frame is provided with a hoop, a side plate, a large spring and a motor from left to right, and the right side surface of the side plate is provided with a chute. And the upper end of the sliding slot is provided with a limiting block, the top end of the large spring is provided with a slanted rectangular strip, the output end of the motor is fixedly connected with the bracket, the top end of the bracket is provided with a disc, and the disc is embedded therein There is a sliding through hole, a round rod is arranged in the middle of the bracket, and the round rod is in contact with the inclined rectangular strip, and a fixed through hole is embedded in the bottom of the parachute placing frame, and a parachute is arranged on the surface of the parachute placing frame. A slider is disposed on a side of the parachute placement frame, and the parachute placement frame is slidably coupled to the side panel through the slider.

Preferably, the distance sensing device and the speed sensing device are embedded with an optical signal receiver and an optical signal transmission Device.

Preferably, the fall protection device comprises an induced draft fan, and an air bag is connected to the output end of the induced draft fan, and the air bag is embedded in the elastic sleeve, and the elastic sleeve is disposed along an outer edge of the bottom of the drone.

The technical effects and advantages of the present invention: the drone safe landing device controls the activation of the landing buffer device and the landing protection device by distance information and speed information transmitted by the distance sensing device and the speed sensing device. The invention makes the drone fall without being affected by the terrain and the weather, and is safe and reliable. On the other hand, the drone is protected from mechanical stress during the landing process, and the utility model has the practical value.

DRAWINGS

Figure 1 is a schematic view of the overall connection of the present invention;

2 is a schematic view of a landing buffer device of the present invention;

Figure 3 is a schematic view of the landing protection device of the present invention;

Figure 4 is a schematic view of the apparatus of the present invention.

In the figure: 1 controller, 2 distance sensing device, 3 landing buffer device, 4 landing protection device, 5 speed sensing device, 6 fixing frame, 7 bracket, 8 large springs, 9 discs, 10 motors, 11 rings , 12 side panels, 13 parachutes, 14 parachute placement frames, 15 airbags, 16 elastic sleeves, 17 induced draft fans.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The present invention provides a drone safe landing device as shown in FIGS. 1-4, comprising a controller 1, a distance sensing device 2, a speed sensing device 5, a landing buffer device 3, and a fall protection device 4, The controller 1 is internally embedded with a control module, and the control chip of the control module is an STM32 type single chip microcomputer. The landing buffer device 3 includes a fixing frame 6 and a parachute placing frame 14, and the upper surface of the fixing frame 6 is from left to right. The iron ring 11, the side plate 12, the large spring 8 and the motor 10 are provided. The right side surface of the side plate 12 is provided with a sliding slot, and the top end of the sliding slot is provided with a limiting block, and the top end of the large spring 8 is provided with an inclined rectangle. The output end of the motor 10 is fixedly connected to the bracket 7 , the top end of the bracket 7 is provided with a disc 9 , and the disc 9 is embedded with a sliding through hole, and the middle portion of the bracket 7 is provided with a round rod, and The round bar is in contact with the inclined rectangular strip. The bottom of the parachute placing frame 14 is embedded with a fixed through hole. The surface of the parachute placing frame 14 is provided with a parachute 13 , and the side of the parachute placing frame 14 is provided with a slider. The parachute placement frame 14 is slidably coupled to the side panel 12 by a slider. The input signal interface of the controller 1 is electrically connected to the output signal interface of the distance sensing device 2 and the speed sensing device 5, and the drop buffer device 3 and the fall protection device 4 are electrically connected to the controller 1, and the distance sensing device 2 and embedded in the speed sensing device 5 An optical signal receiver and an optical signal transmitter are provided. The fall protection device 4 includes an induced draft fan 17 . The output end of the induced draft fan 17 is connected with an air bag 15 , and the air bag 15 is embedded in the elastic sleeve 16 . The sleeve 16 is placed along the outer edge of the bottom of the drone.

Working principle: During the whole flight of the drone, the controller 1 falls into "sleep", and the controller 1 only receives the information from the distance sensing device 2 and the speed sensing device 5, when the distance sensing device 2 When the controller 5 transmits information closer to the "ground", the controller 1 is awakened to check the rotational speed of the UAV power motor transmitted by the speed sensing device 5, and when the rotational speed is the normal flight speed, the controller 1 does not operate. This means that the "ground" at this time may be a high-rise building or a mountain or the like; when the rotational speed transmitted by the speed sensing device 5 is low, the controller 1 is also awakened, and the distance information transmitted from the distance sensing device 2 is checked. If the distance is too large, the controller 1 does not move and enters the sleep mode, which means that the drone is doing some turning and lowering actions.

The device adopts double insurance mode to avoid malfunction. When the speed of the power motor in the drone is low and close to the bottom surface, the controller 1 operates, firstly controlling the rotation of the motor 10 in the drop buffer device 3, and the motor 10 will rotate. When the bracket 7 is rotated, the middle round rod of the bracket 7 will rotate along the inclined rectangular strip at the top of the large spring 8, thereby compressing the large spring 8, and the sliding through hole provided in the disc 9 at the top of the bracket 7 will be placed with the bottom of the parachute frame 14. Corresponding to the fixed through hole, the parachute 13 is pre-inflated so as to be better deployed to cushion, and as the motor 10 continues to rotate, the large spring 8 is released, thereby flying the parachute 13 on the surface of the parachute placing frame 14 The two ends of the parachute 13 are hooked on the ring 11, and the parachute placing frame 14 is left in the landing buffer device under the action of the slider provided on the side of the parachute and the limiting block provided on the side of the side plate 12. Inside.

After the landing buffer device 3 is operated, the controller 1 analyzes the distance information transmitted from the distance sensing device 2. When the distance information transmitted from the distance sensing device 2 is 1 meter, the controller 1 controls the landing protection device 4 to operate, and the induced draft fan 17 is activated, the air bag 15 originally placed in the elastic sleeve 16 is inflated, the elastic sleeve 16 will be extruded, and the elastic sleeve 16 is disposed along the outer edge of the lower portion of the drone, so the air bag 15 will effectively serve the entire drone. The protection is up.

It should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, although the present invention has been described in detail with reference to the foregoing embodiments, Modifications may be made to the technical solutions described in the foregoing embodiments, or equivalent modifications may be made to some of the technical features, and any modifications, equivalent substitutions, improvements, etc., which are made within the spirit and principles of the present invention, should be included in Within the scope of protection of the present invention.

Claims

A drone safe landing device comprises a controller (1), a distance sensing device (2), a speed sensing device (5), a landing buffer device (3) and a landing protection device (4), characterized in that: The controller (1) input signal interface is electrically connected to the distance sensing device (2) and the speed sensing device (5) output signal interface, the landing buffer device (3) and the fall protection device (4) and control The device (1) is electrically connected.
The unmanned aerial vehicle safety landing device according to claim 1, wherein the controller (1) is internally embedded with a control module, and the control chip of the control module is an STM32 type single chip microcomputer.
A drone safe landing device according to claim 1, characterized in that the landing gear (3) comprises a fixing frame (6) and a parachute placing frame (14), the fixing frame (6) The surface is provided with a hoop (11), a side plate (12), a large spring (8) and a motor (10) from left to right, and the right side surface of the side plate (12) is provided with a chute, and the chute is The top end is provided with a limiting block, the top end of the large spring (8) is provided with a slanted rectangular strip, the output end of the motor (10) is fixedly connected with the bracket (7), and the top end of the bracket (7) is provided with a disc (9). And a sliding through hole is embedded in the disc (9), a round rod is arranged in a middle portion of the bracket (7), and the round rod is in contact with the inclined rectangular strip, and the lower bottom of the parachute placing frame (14) is embedded A fixed through hole is provided, and a parachute (13) is disposed on a surface of the parachute placing frame (14), a slider is disposed on a side of the parachute placing frame (14), and the parachute placing frame (14) passes through the sliding block and the side plate (12) Sliding connection.
The unmanned aerial vehicle safety landing device according to claim 1, characterized in that the distance sensing device (2) and the speed sensing device (5) are embedded with an optical signal receiver and an optical signal transmitter.
A drone safe landing device according to claim 1, characterized in that the fall protection device (4) comprises an induced draft fan (17), and an airbag (15) is connected to the output end of the induced draft fan (17). The air bag (15) is embedded in the elastic sleeve (16), and the elastic sleeve (16) is disposed along the outer edge of the bottom of the drone.