CN215340324U

CN215340324U - Rotary radar and unmanned aerial vehicle

Info

Publication number: CN215340324U
Application number: CN202121215526.3U
Authority: CN
Inventors: 康振华
Original assignee: Guangzhou Xaircraft Technology Co Ltd
Current assignee: Guangzhou Xaircraft Technology Co Ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-12-28
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses a rotary radar and an unmanned aerial vehicle, wherein the rotary radar comprises a fixed plate, a rotating plate and a wireless power supply assembly, the wireless power supply assembly comprises a transmitting coil and a receiving coil, the transmitting coil is arranged on the fixed plate, the receiving coil is arranged on the rotating plate, the transmitting coil is opposite to the receiving coil in position, the rotating plate is provided with a first side face close to the fixed plate, the receiving coil is arranged in the central area of the first side face, a first coding area is arranged outside the receiving coil, a first antenna is arranged inside the first coding area, a second coding area is arranged outside the transmitting coil, a second antenna is arranged inside the second coding area, one of the first coding area and the second coding area is provided with a code disc, and the other of the first coding area and the second coding area is provided with an optical encoder corresponding to the code disc. The rotary radar has the advantages of simple structure and high wireless power supply efficiency.

Description

Rotary radar and unmanned aerial vehicle

Technical Field

The utility model relates to the technical field of radars, in particular to a rotary radar and an unmanned aerial vehicle comprising the same.

Background

Radar is a device that uses radio methods to find an object and determine its spatial location. Electromagnetic waves transmitted by the radar irradiate a target and receive echoes of the target, so that information such as the distance from the target to an electromagnetic wave transmitting point, the distance change rate (radial speed), the azimuth, the altitude and the like is obtained.

Generally set up rotatory radar on the unmanned aerial vehicle, rotatory radar includes the fixed plate and for the rotatory rotor plate of fixed plate, the rotor plate is connected with the motor, rotates under the drive of motor, the rotor plate drives radar subassembly (antenna panel promptly) and rotates together, is provided with wireless power supply receiving coil on the rotor plate, is provided with wireless power supply transmitting coil on the fixed plate, two coil cooperations realize supplying power to radar subassembly (antenna panel promptly) etc..

At present, the rotary radar usually further includes a coding component for detecting the rotation speed of the rotary radar and a communication antenna for communication between the rotary radar and the drone, and these components, if installed between two plates (a rotating plate and a fixed plate), may compress the area of the coil to reduce the power supply efficiency, and if installed outside the two plates, may cause the structure to be complicated and even increase the volume of the radar.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: the rotary radar and the unmanned aerial vehicle are simple in structure and high in wireless power supply efficiency.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in a first aspect, a rotary radar is provided, comprising a fixed plate, a rotating plate and a wireless power supply assembly, the wireless power supply assembly comprises a transmitting coil and a receiving coil, the transmitting coil is arranged on the fixing plate, the receiving coil is arranged on the rotating plate, the transmitting coil is opposite to the receiving coil, the rotating plate has a first side surface close to the fixing plate, the receiving coil is disposed in a central region of the first side surface, a first coding area is arranged outside the receiving coil in an annular mode, a first antenna is arranged in the first coding area, a second coding region is arranged outside the transmitting coil in an annular mode, a second antenna is arranged in the second coding region, one of the first encoding region and the second encoding region is provided with a code wheel, and the other of the first encoding region and the second encoding region is provided with an optical encoder corresponding to the code wheel.

As a preferable scheme of the rotary radar, a magnetism isolating sheet is arranged between the receiving coil and the rotating plate; and/or the presence of a gas in the gas,

and a magnetic shielding sheet is arranged between the transmitting coil and the fixing plate.

As a preferable scheme of the rotary radar, the sum of the thicknesses of the receiving coil and the magnetism isolating sheet is B1, and B1 is more than or equal to 1mm and less than or equal to 2 mm; and/or the presence of a gas in the gas,

the sum of the thicknesses of the transmitting coil and the magnetism isolating sheet is B2, and B2 is more than or equal to 1mm and less than or equal to 2 mm.

As a preferable mode of the rotary radar, a distance between the receiving coil and the transmitting coil is not more than 3 mm.

As a preferred solution of the rotary radar, the distance between the receiving coil and the transmitting coil is 2 mm.

As a preferable scheme of the rotary radar, the rotary plate is a PCB plate, and the first antenna is a PCB on-board antenna; and/or the presence of a gas in the gas,

the fixed plate is a PCB, and the second antenna is a PCB onboard antenna.

As a preferred scheme of the rotary radar, the rotary plate is a PCB, the first antenna is a copper sheet, the code disc is an ink layer printed on the first antenna by silk screen, the ink layer includes a first ink layer and a second ink layer, the first ink layer and the second ink layer are alternately arranged along the annular direction of the first coding region, and the first ink layer and the second ink layer are different in color.

As a preferable mode of the rotary radar, the first ink layer is black, and the second ink layer is white.

As a preferred scheme of the rotary radar, the rotary plate is a PCB, the first antenna is a copper sheet, the code disc is an ink layer printed on the first antenna by silk screen, the color of the ink layer is different from that of the copper sheet, hollowed-out areas are arranged on the ink layer at equal intervals along the annular direction of the first coding area, and the copper sheet at the hollowed-out areas is exposed.

As a preferable scheme of the rotary radar, the rotating plate has a second side surface deviating from the fixed plate, the second side surface is connected with the rotating shaft of the motor through a connecting frame, the connecting frame is connected with the rotating plate through a fastening piece, and the fastening piece is arranged on one side of the first coding region away from the receiving coil at intervals.

As a preferable scheme of the rotary radar, a stepped hole is formed in the rotary plate, the stepped hole includes a first hole and a second hole which are communicated with each other, the diameter of the first hole is larger than that of the second hole, the first hole is close to the fixing plate, the fastening member is a fastening screw, and a nut of the fastening screw is at least partially located in the first hole.

In a second aspect, an unmanned aerial vehicle is provided, comprising a fuselage, wherein the rotary radar is arranged on the fuselage.

The embodiment of the utility model has the beneficial effects that: through setting up transmitting coil and receiving coil respectively in the central zone of fixed plate and rotor plate, can increase the area of coil when not increasing the area of fixed plate and rotor plate, wireless power supply's efficiency has been promoted, and the layout mode of rotatory radar has been changed, overlap antenna and code area position, can realize the position multiplexing, and then make the coil have bigger area, and do not additionally increase the structural complexity or the volume of radar, thereby promote wireless power supply's efficiency.

Drawings

The utility model is explained in more detail below with reference to the figures and examples.

Fig. 1 is a schematic cross-sectional view of a rotary radar according to an embodiment of the present invention.

Fig. 2 is a partially cross-sectional schematic view of a rotary radar according to an embodiment of the present invention.

FIG. 3 is a bottom view of the combination of the rotating plate, the receiving coil and the code wheel according to one embodiment of the present invention.

FIG. 4 is a bottom view of a rotating plate, a receiving coil and a code wheel in combination according to another embodiment of the present invention.

Fig. 5 is a schematic top view of a fixing plate, a transmitting coil, a second antenna and an optical encoder according to an embodiment of the present invention.

FIG. 6 is a cross-sectional view of a combination of a rotating plate, a receiving coil, a code wheel and a connecting frame according to yet another embodiment of the present invention.

In the figure:

1. a fixing plate; 101. a third side; 102. a second coding region; 103. a fourth side;

2. a rotating plate; 201. a first side surface; 202. a first coding region; 203. a second side surface; 204. a stepped bore; 2041. a first hole; 2042. a second hole;

3. a transmitting coil; 4. a receiving coil; 5. a first antenna; 6. a second antenna;

7. code disc; 701. an ink layer; 7011. a first ink layer; 7012. a second ink layer; 702. a hollow-out area;

8. an optical encoder; 9. a magnetic shield sheet; 10. a connecting frame; 11. fastening screws; 12. a motor; 13. a radar plate; 14. a housing.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, an embodiment of the present invention provides a rotary radar, which may be applied to equipment such as a motor vehicle, a ship, and an aircraft, and is used to detect a position of the equipment and obstacles around the equipment, so as to ensure that the equipment can accurately avoid the obstacles. The utility model is exemplified by being used on an unmanned aerial vehicle (namely an unmanned aerial vehicle), and the unmanned aerial vehicle can realize accurate positioning and obstacle avoidance through the rotary radar in the flight process.

Referring to fig. 1 and 2, the rotary radar comprises a housing 14, a fixed plate 1 is arranged in the housing 14, a rotary plate 2 is arranged above the fixed plate 1, the rotary plate 2 is located in the housing 14, the rotary plate 2 is driven by a motor 12 to rotate relative to the fixed plate 1 and the housing 14, wireless power supply assemblies are arranged on the fixed plate 1 and the rotary plate 2, the motor 12 drives the rotary plate 2 to rotate relative to the fixed plate 1, a radar plate 13 is arranged on the rotary plate 2, and the rotary plate 2 can drive the radar plate 13 to rotate together. The electric energy of the power supply in the unmanned aerial vehicle is supplied to the radar plate 13 of the rotary radar through the wireless power supply assembly, so that the influence of a wired power supply mode on the rotation of the rotary radar can be effectively avoided.

The wireless power supply assembly comprises a transmitting coil 3 and a receiving coil 4, wherein the transmitting coil 3 is arranged on the fixing plate 1, the receiving coil 4 is arranged on the rotating plate 2, and the transmitting coil 3 is opposite to the receiving coil 4. The transmitter coil 3 and the receiver coil 4 are identical in shape and volume. Preferably, the transmitting coil 3 is directly opposite to the receiving coil 4. In other embodiments, the transmitting coil 3 and the receiving coil 4 may be partially overlapped, and wireless power supply can be realized in several ways.

As shown in fig. 2, the rotary plate 2 has a first side 201 close to the fixed plate 1 and a second side 203 facing away from the fixed plate 1, the receiver coil 4 is arranged in a central region of the first side 201, the receiver coil 4 is provided with a first code area 202 in an outer ring shape, the first code area 202 is provided with a first antenna 5, the transmitter coil 3 is provided with a second code area 102 in an outer ring shape, the second code area 102 is provided with a second antenna 6, one of the first code area 202 and the second code area 102 is provided with a code wheel 7, and the other of the first code area 202 and the second code area 102 is provided with an optical encoder 8 corresponding to the code wheel 7. In the present embodiment, the transmission coil 3 and the reception coil 4 are both circular, and the centers thereof coincide with the center of the rotating plate 2. Through setting up transmitting coil 3 and receiving coil 4 respectively at the central zone of fixed plate 1 and rotor plate 2, can increase the area of coil when not increasing the area of fixed plate 1 and rotor plate 2, wireless power supply's efficiency has been promoted, and the layout mode of rotatory radar has been changed, overlap antenna and coding region position, can realize the position multiplexing, and then make the coil have bigger area, and do not additionally increase the structural complexity or the volume of radar, thereby promote wireless power supply's efficiency.

In one embodiment, as shown in fig. 6, the second side 203 of the rotating plate 2 is connected to the rotating shaft of the motor 12 through the connecting frame 10, and the connecting frame 10 is connected to the rotating plate 2 through the fastening members spaced apart from the first coding region 202 on the side away from the receiving coil 4. By arranging the connecting frame 10 and arranging the position of the fastening piece at the outer ring of the first coding region 202, the connecting position of the rotating plate 2 and the rotating shaft of the motor 12 can be prevented from occupying the space of the coil, the coding region and the like.

In this embodiment, the rotating plate 2 is provided with a stepped hole 204, the stepped hole 204 includes a first hole 2041 and a second hole 2042 which are communicated with each other, a diameter of the first hole 2041 is greater than a diameter of the second hole 2042, the first hole 2041 is close to the fixing plate 1, the fastening member is a fastening screw 11, and a nut of the fastening screw 11 is at least partially located in the first hole 2041. The step hole 204 can partially or completely hide the nut of the fastening screw 11, and can position the fixing position of the fastening screw 11, so that the fastening screw 11 can be accurately installed, and in addition, the partially or completely hidden nut can reduce the exposed size of the fastening screw 11, so that the distance between the fixing plate 1 and the rotating plate 2 can be reduced, and the efficiency of wireless power supply can be improved after the distance between the fixing plate 1 and the rotating plate 2 is reduced.

Of course, the connection frame 10 and the rotary plate 2 are not limited to the connection using the fastening member, and the connection frame 10 and the rotary plate 2 may be connected using an adhesive, a snap, or the like.

In one embodiment, as shown in fig. 2 and 3, the rotating plate 2 is a PCB, the second side 203 of the rotating plate 2 is provided with components, the code wheel 7 is arranged on the rotating plate 2, and correspondingly, the optical encoder 8 is arranged on the fixing plate 1. The first antenna 5 is a PCB board-mounted antenna, specifically, the first antenna 5 is a copper sheet, the code wheel 7 is an ink layer 701 printed on the first antenna 5 by silk screen printing, the ink layer 701 includes a first ink layer 7011 and a second ink layer 7012, the first ink layer 7011 and the second ink layer 7012 are alternately arranged along the annular direction of the first coding region 202, and the first ink layer 7011 and the second ink layer 7012 are different in color. By setting the first antenna 5 as a copper sheet PCB on-board antenna, not only is the signal receiving and sending effects good, but also the silk-screen printing of the code disc 7 can be met, so that the first antenna 5 and the code disc 7 can be positioned in the same area, and the respective functions of the first antenna 5 and the code disc 7 are not influenced, namely, the code disc 7 silk-screened on the first antenna 5 cannot influence the signal transmission of the first antenna 5, and the flat-plate-shaped first antenna 5 can also ensure the arrangement of the code disc 7; by setting the colors of the first ink layer 7011 and the second ink layer 7012 to be different, the position of the code wheel 7 can be detected by the optical encoder 8.

In this embodiment, the first ink layer 7011 is black, and the second ink layer 7012 is white. The contrast ratio of the black color and the white color is higher, so that the sensing sensitivity of the reflective optical encoder can be effectively improved.

In other embodiments, the code wheel 7 is not limited to be silk-screened by using inks of different colors, but may also be silk-screened directly by using an ink of one color on the rotating plate 2, and the copper layer of the first antenna 5 is exposed by windowing, and only the color of the first antenna 5 is different from the color of the ink layer 701. Specifically, as shown in fig. 2 and 4, the code wheel 7 is an ink layer 701 printed on the first antenna 5 by silk screen printing, the color of the ink layer 701 is different from that of the copper sheet, the ink layer 701 is provided with hollow-out areas 702 at equal intervals along the annular direction of the first coding area 202, and the copper sheet at the hollow-out areas 702 is exposed.

In one embodiment, as shown in fig. 2 and 5, the fixing plate 1 is a PCB, the second antenna 6 is a PCB board-mounted antenna, and optionally, the second antenna 6 is a copper plate fixed on the PCB, and the second antenna 6 is a PCB board-mounted antenna such as a copper plate, and in combination with the plate-shaped first antenna 5, the distance between the fixing plate 1 and the rotating plate 2 can be greatly shortened, thereby improving the efficiency of wireless power supply.

In the present exemplary embodiment, the fastening plate 1 has a third side 101 and a fourth side 103 which are arranged opposite to each other, wherein the transmitting coil 3 is arranged on the third side 101, and the components of the fastening plate 1 are arranged on the fourth side 103.

The components and parts of the fixed plate 1 and the rotating plate 2 are selectively arranged on the back side, so that the space of the back side surfaces of the fixed plate 1 and the rotating plate 2 can be reasonably utilized, the layout space of the third side surface 101 of the fixed plate 1 and the first side surface 201 of the rotating plate 2 is increased, more coils can be arranged, and the area of the coils can be larger.

In one embodiment, a magnetic shielding sheet 9 is disposed between the receiving coil 4 and the rotating plate 2. By arranging the magnetism isolating sheet 9, the magnetic induction lines of the receiving coil 4 can be prevented from penetrating through the rotating plate 2 to influence the normal use of components on the back side (the second side 203) of the rotating plate 2, namely the interference of the receiving coil 4 can be reduced.

A magnetic shielding sheet 9 is also arranged between the transmitting coil 3 and the fixing plate 1. Through setting up magnetism isolating sheet 9, can prevent that transmitting coil 3's magnetic induction line from passing fixed plate 1 and influencing fixed plate 1 dorsal part (being fourth side 103) components and parts normal use, can reduce transmitting coil 3's interference.

In the embodiment, the sum of the thicknesses of the receiving coil 4 and the magnetism-isolating piece 9 is B1, the thickness of the B1 is more than or equal to 1mm and less than or equal to 2mm, the sum of the thicknesses of the transmitting coil 3 and the magnetism-isolating piece 9 is B2, and the thickness of the B2 is more than or equal to 1mm and less than or equal to 2 mm.

Preferably, the sum of the thicknesses of the receiving coil 4 and the magnetic shield 9 is B1, and the sum of the thicknesses of the transmitting coil 3 and the magnetic shield 9 is B2, which are both 1.5 mm.

In the present embodiment, the distance between the receiving coil 4 and the transmitting coil 3 is not more than 3 mm. Preferably, the distance between the receiving coil 4 and the transmitting coil 3 is 2 mm.

In addition, the width of the first encoding area 202 is 8.5mm, in which area the first antenna 5 is placed.

The embodiment of the utility model also provides an unmanned aerial vehicle which comprises a body, wherein the body is provided with the rotary radar of any embodiment, and the structure of the rotary radar is not described in detail herein.

A power supply is arranged in the machine body and is connected with the fixing plate 1 through a lead, the electrified transmitting coil 3 transmits electromagnetic waves, the receiving coil 4 on the rotating plate 2 receives the electromagnetic waves and then converts the electromagnetic waves into electric energy, and the electric energy drives the motor 12 to start rotation.

In the description herein, references to the term "an embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that may be understood by those skilled in the art.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. A rotary radar comprises a fixed plate, a rotating plate and a wireless power supply assembly, wherein the wireless power supply assembly comprises a transmitting coil and a receiving coil, the transmitting coil is arranged on the fixed plate, the receiving coil is arranged on the rotating plate, the transmitting coil and the receiving coil are opposite in position, characterized in that the rotating plate has a first side surface close to the fixed plate, the receiving coil is arranged in the central area of the first side surface, a first coding area is arranged outside the receiving coil in an annular mode, a first antenna is arranged in the first coding area, a second coding region is arranged outside the transmitting coil in an annular mode, a second antenna is arranged in the second coding region, one of the first encoding region and the second encoding region is provided with a code wheel, and the other of the first encoding region and the second encoding region is provided with an optical encoder corresponding to the code wheel.

2. The rotary radar of claim 1, wherein a magnetic shield is disposed between the receiving coil and the rotating plate; and/or the presence of a gas in the gas,

3. The rotary radar of claim 2, wherein the sum of the thicknesses of the receiver coil and the magnetic shield is B1, 1mm ≦ B1 ≦ 2 mm; and/or the presence of a gas in the gas,

4. The rotary radar of claim 1, wherein a distance between the receive coil and the transmit coil is no greater than 3 mm.

5. The rotary radar of claim 4, wherein the distance between the receive coil and the transmit coil is 2 mm.

6. The rotary radar of any one of claims 1 to 5, wherein the rotating plate is a PCB board and the first antenna is a PCB board-mounted antenna; and/or the presence of a gas in the gas,

the fixed plate is a PCB, and the second antenna is a PCB onboard antenna.

7. The rotary radar of any one of claims 1 to 5, wherein the rotary plate is a PCB, the first antenna is a copper sheet, the code wheel is an ink layer silk-screened on the first antenna, the ink layer comprises a first ink layer and a second ink layer, the first ink layer and the second ink layer are alternately arranged along the annular direction of the first coding region, and the first ink layer and the second ink layer are different in color.

8. The rotary radar of claim 7, wherein the first ink layer is black and the second ink layer is white in color.

9. The rotary radar according to any one of claims 1 to 5, wherein the rotary plate is a PCB (printed Circuit Board), the first antenna is a copper sheet, the code disc is an ink layer silk-screened on the first antenna, the color of the ink layer is different from that of the copper sheet, hollowed-out areas are arranged on the ink layer at equal intervals along the annular direction of the first coding area, and the copper sheet at the hollowed-out areas is exposed.

10. The rotary radar of any one of claims 1 to 5, wherein the rotating plate has a second side facing away from the fixed plate, the second side being connected to the motor shaft by a connecting bracket, the connecting bracket being connected to the rotating plate by a fastener, the fastener being spaced apart on a side of the first code region remote from the receiving coil.

11. The rotary radar of claim 10, wherein the rotary plate defines a stepped bore, the stepped bore includes a first bore and a second bore that are in communication, a diameter of the first bore is greater than a diameter of the second bore, the first bore is adjacent to the fixed plate, the fastening member is a fastening screw, and a nut of the fastening screw is at least partially disposed within the first bore.

12. An unmanned aerial vehicle comprising a fuselage, wherein a rotary radar according to any one of claims 1 to 11 is provided on the fuselage.