CN211180184U

CN211180184U - Mechanical rotation microwave radar and movable platform

Info

Publication number: CN211180184U
Application number: CN201921885374.0U
Authority: CN
Inventors: 张文康; 黄稀荻; 李胜良
Original assignee: SZ DJI Technology Co Ltd
Current assignee: SZ DJI Technology Co Ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-08-04
Anticipated expiration: 2029-11-04

Abstract

The utility model provides a rotatory microwave radar of machinery and movable platform, rotatory microwave radar of machinery includes base (310), antenna module (320), actuating mechanism (330), signal processing circuit (340), signal transmission circuit (350), drive control circuit (360) and mount pad (370), the mount pad includes first pedestal (371), second pedestal (372) and lid (373), first pedestal is used for fixing actuating mechanism's organism on the base, the second pedestal is used for covering the rotating part who establishes actuating mechanism, and is used for fixed antenna module and signal processing circuit, the lid is covered and is established on the second pedestal; the base, the first seat body, the body of the driving mechanism, the second seat body and the cover body jointly form a closed electromagnetic shielding space, and the signal transmission circuit and the driving control circuit are contained in the electromagnetic shielding space, so that the effective shielding of the internal circuit system of the mechanical rotating microwave radar is realized.

Description

Mechanical rotation microwave radar and movable platform

Technical Field

The utility model relates to a radar field especially relates to a rotatory microwave radar of machinery and movable platform.

Background

In the detection and ranging application fields of unmanned aircrafts, unmanned automobiles and other industries, the millimeter wave radar is widely applied due to the advantages of high detection precision, long detection distance, high environment tolerance and the like. The detection coverage angle of the mechanical rotation scanning radar in the millimeter wave radar is wide, and the overall cost is low, so that the millimeter wave radar has greater competitive advantage. However, inside the existing mechanical rotation scanning millimeter wave radar, the rotor and the stator realize 360-degree rotation through wireless power supply and wireless communication, and the defects that the shielding effect of an internal circuit system is poor, so that the external interference is strong, the external interference is easy to cause, and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rotatory microwave radar of machinery and movable platform.

Specifically, the utility model discloses a realize through following technical scheme:

according to the utility model discloses a first aspect provides a rotatory microwave radar of machinery, rotatory microwave radar of machinery includes:

a base;

an antenna assembly disposed above the base, the antenna assembly for transmitting and receiving microwave signals, and the antenna assembly being rotatable about an axis of rotation relative to the base;

the rotating part of the driving mechanism is fixedly connected with the antenna assembly so as to drive the antenna assembly to rotate around the rotating shaft;

the signal processing circuit is used for processing the microwave signal received by the antenna assembly;

the signal transmission circuit is used for transmitting the microwave signal processed by the signal processing circuit to external equipment; and

the drive control circuit is used for driving the drive mechanism to rotate and supplying power to the antenna assembly, the signal processing circuit and the signal transmission circuit; and

the mounting seat comprises a first seat body, a second seat body and a cover body, wherein the first seat body is used for fixing the machine body of the driving mechanism on the base, the second seat body is used for covering the rotating part and fixing the antenna assembly and the signal processing circuit, and the cover body is covered on the second seat body;

the base, the first seat body, the body of the driving mechanism, the second seat body and the cover body together form a closed electromagnetic shielding space, and the signal transmission circuit and the driving control circuit are accommodated in the electromagnetic shielding space.

Optionally, the driving mechanism is an external rotor motor, the external rotor motor includes a rotating shaft, a rotor shell sleeved at one end of the rotating shaft near the top, and a stator shell sleeved at one end of the rotating shaft near the bottom, the machine body of the driving mechanism includes the rotor shell and the stator shell, and the rotor shell is rotatably connected to the top of the stator shell;

the rotating part comprises the rotating shaft and the rotor shell, the rotor shell drives the antenna assembly to rotate together, the stator shell is fixedly connected to the base through the first base body, and the second base body is fixedly connected to the rotor shell.

Optionally, the second base is connected to the cover and the rotor shell in an abutting manner, respectively, so as to seal the rotating shaft in the electromagnetic shielding space.

Optionally, the antenna assembly and the signal processing circuit, the signal processing circuit and the signal transmission circuit, and the drive control circuit and the driving mechanism are respectively flexibly connected through an FPC connecting line, and the FPC connecting line is attached to a side wall of the corresponding circuit.

Optionally, one end of the FPC connecting wire, which is connected to the corresponding circuit, is fixed to the side wall of the corresponding circuit through a compression structure; and/or the presence of a gas in the gas,

and an electromagnetic shielding film is arranged on the surface of the FPC connecting wire.

Optionally, the antenna assembly and the signal processing circuit are enclosed to form a cover, and the cover is disposed on the second base and is fixedly connected to the second base.

Optionally, the antenna assembly comprises a radio frequency board and a height-fixed radar board;

the radio frequency board and the signal processing circuit are oppositely arranged on two sides of the mounting seat, and the radio frequency board is approximately parallel to the signal processing circuit;

the height-fixed radar board is clamped between the radio frequency board and the signal processing circuit and is arranged above the second seat body.

Optionally, the FPC connecting lines include a first FPC connecting line for connecting the radio frequency board and the signal processing circuit, and a second FPC connecting line for connecting the height-determining radar board and the signal processing circuit;

wherein the first FPC connecting line is approximately parallel to the height-fixed radar board, and the first FPC connecting line is positioned at the end part of the same side of the radio frequency board and the signal processing circuit.

Optionally, the second seat body is provided with a fixing hole, one end of the second FPC connecting line is connected to the height-fixing radar board, and the other end of the second FPC connecting line is connected to the signal processing circuit after penetrating through the fixing hole.

Optionally, the radio frequency board and the height-fixed radar board are respectively and fixedly connected to the second base through a support board, and the radio frequency board is substantially parallel to the corresponding support board and the height-fixed radar board is substantially parallel to the corresponding support board;

the edges of the radio frequency board and the height-fixed radar board are respectively provided with a first conductive part, a first contact part capable of conducting electricity is arranged at the corresponding position of the supporting board, the shape of the first contact part is matched with that of the conductive part, and the first contact part is used for being connected with the first conductive part;

the first contact part comprises a first side part and a first open slot formed by the first side part in an enclosing mode, a first flexible conductive structure is filled in the first open slot, and the first flexible conductive structure is in contact with the first side part;

when the radio frequency board and the height-fixed radar board are fixedly connected with the corresponding supporting boards respectively, the first contact part covers the first conductive part, and the first conductive part is in sealing contact with the first contact part through the first flexible conductive structure.

Optionally, the first flexible conductive structure is a conductive adhesive structure; and/or the presence of a gas in the gas,

the first conductive part is in extrusion fit with the first flexible conductive structure; and/or the presence of a gas in the gas,

the first conductive part is a conductive layer or a ground layer of the radio frequency board and the height-fixed radar board; and/or the presence of a gas in the gas,

the first flexible conductive structure is provided with an accommodating groove, and when the radio frequency board and the height-fixed radar board are respectively and fixedly connected with the corresponding supporting plates, the first conductive part is accommodated in the accommodating groove.

Optionally, the signal transmission circuit comprises an RX control board for communication connection with the signal processing circuit and an RX antenna board for communication connection with the drive control circuit and capable of communicating with an external device, the RX antenna board is connected with the RX control board through a signal line;

the RX control board is clamped and fixed between the second base and the cover, and the RX antenna board is fixed at the bottom of the rotating component.

Optionally, the rotating member includes a hollow rotating shaft, and the signal line is accommodated in a hollow space of the rotating shaft.

Optionally, an edge of one side of the cover body facing the RX control board and/or an edge of one side of the second base body facing the RX control board are/is provided with a second contact portion capable of conducting electricity, a second conductive portion is provided at a corresponding position of the RX control board, the second contact portion is matched with the second conductive portion in shape, and the second contact portion is used for being connected with the second conductive portion;

the second contact part comprises a second side part and a second open slot formed by the second side part in an enclosing mode, a second flexible conductive structure is filled in the second open slot, and the second flexible conductive structure is in contact with the second side part;

when the RX control board is fixedly connected to the cover and/or the second base, the second contact portion covers the second conductive portion, and the second conductive portion is in sealing contact with the second contact portion through the second flexible conductive structure.

Optionally, the FPC connecting line includes a third FPC connecting line, one end of the third FPC connecting line is connected to the signal processing circuit, and the other end of the third FPC connecting line passes through a gap at a joint of the cover and the RX control board and is then connected to the RX control board, and the cover can press the third FPC connecting line on the RX control board.

Optionally, the driving control circuit includes a TX control board and a TX power supply board, wherein the TX control board is fixedly connected to the body of the driving part;

the base is provided with an accommodating space, the TX power supply board is accommodated in the accommodating space, and the TX power supply board can be electrically connected with an external power supply;

the FPC connecting line comprises a fourth FPC connecting line and a fifth FPC connecting line, one end of the fourth FPC connecting line is connected with the control end of the driving mechanism and/or the sensor on the driving mechanism, and the other end of the fourth FPC connecting line is connected with the TX control panel;

and the TX control board is connected with the TX power supply board through a fifth FPC connecting wire.

Optionally, the first base body and the base are respectively provided with a through hole, and the fifth FPC connection line passes through the through hole and then is connected to the TX power supply board.

Optionally, the through hole and the fifth FPC connection line are sealed by a metal sealing layer.

Optionally, the mechanical rotation microwave radar further comprises a transmitting coil and a receiving coil housed in the electromagnetic shielding space;

the transmitting coil is accommodated in the accommodating space and arranged on one side, facing the driving mechanism, of the TX power supply board, and the transmitting coil is connected with the TX power supply board so as to supply power to the transmitting coil through the TX power supply board;

the receiving coil is fixed at the bottom of the rotating part and is arranged at an interval with the transmitting coil;

the receive coil cooperates with the transmit coil to power the antenna assembly, the signal processing circuitry, the signal transmission circuitry, and the TX control board.

Optionally, the surfaces of the transmitting coil and the receiving coil are provided with electromagnetic wave absorbing layers.

Optionally, the body of the driving mechanism, the first seat, the second seat, the cover, and the base are of metal structures.

Optionally, the connection surface of the first base and the base is processed by laser etching.

According to a second aspect of the present invention, there is provided a movable platform, comprising a frame, a control system and the mechanical rotary microwave radar of the first aspect of the present invention;

the mechanical rotation microwave radar is arranged on the rack and is in communication connection with the control system.

Optionally, the movable platform is an unmanned vehicle, or an unmanned aerial vehicle.

According to the embodiment of the utility model provides a technical scheme forms an inclosed electromagnetic shield space through base, first pedestal, actuating mechanism's organism, second pedestal and lid jointly, accepts in continuous electromagnetic shield space signal transmission circuit and drive control circuit etc. to external disturbance strong and easily receive external disturbance's structure, realizes mechanical rotation microwave radar internal circuit system's effective shielding.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive effort.

FIG. 1 is a schematic cross-sectional view of a mechanically rotating microwave radar according to an exemplary embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged view of portion C of FIG. 1;

FIG. 5 is an enlarged view of detail D of FIG. 1;

fig. 6 is an enlarged view of a portion E of fig. 1;

fig. 7 is a schematic perspective view of a mechanical rotary microwave radar according to an exemplary embodiment of the present invention;

fig. 8 is a block diagram of a mechanical rotary microwave radar according to an exemplary embodiment of the present invention;

fig. 9 is a schematic structural diagram of a movable platform according to an exemplary embodiment of the present invention.

Reference numerals:

100: a frame; 110: a body; 120: a foot rest; 130: a horn; 200: a control system; 300: mechanically rotating the microwave radar; 310: a base; 320: an antenna assembly; 321: a radio frequency board; 322: a height-fixed radar plate; 330: a drive mechanism; 331: a rotating shaft; 332: a rotor case; 333: a stator housing; 340: a signal processing circuit; 350: a signal transmission circuit; 351: an RX control board; 352: an RX antenna board; 360: a drive control circuit; 361: a TX control board; 362: a TX power supply board; 370: a mounting seat; 371: a first seat body; 372: a second seat body; 373: a cover body; 380: an FPC connecting wire; 381: a first FPC connection line; 382: a second FPC connection line; 383: a third FPC connecting line; 384: a fourth FPC connecting line; 385: a fifth FPC connecting line; 390: a support plate; 3100: a signal line; 3200: a transmitting coil; 3300: and a receiving coil.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

The mechanical rotation microwave radar and the movable platform of the present invention will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1, an embodiment of the present invention provides a mechanical rotation microwave radar, where the mechanical rotation microwave radar 300 may include a base 310, an antenna assembly 320, a driving mechanism 330, a signal processing circuit 340, a signal transmission circuit 350, a driving control circuit 360, and a mounting base 370. Wherein the antenna assembly 320 is disposed above the base 310, the antenna assembly 320 is configured to transmit and receive microwave signals, and the antenna assembly 320 is rotatable about an axis of rotation relative to the base 310. In this embodiment, the rotating shaft may be a virtual shaft or a real shaft. When the rotation axis is a solid axis, the antenna assembly 320 rotates relative to the rotation axis, or the antenna assembly 320 rotates along with the rotation axis. The driving mechanism 330 of the present embodiment is disposed on the base 310, and the rotating component of the driving mechanism 330 is fixedly connected to the antenna assembly 320 to drive the antenna assembly 320 to rotate around the rotating shaft.

Further, referring to fig. 8, the antenna assembly 320 and the signal transmission circuit 350 are respectively in communication with the signal processing circuit 340, in this embodiment, the signal processing circuit 340 is configured to process the microwave signal received by the antenna assembly 320, and the signal transmission circuit 350 is configured to transmit the microwave signal processed by the signal processing circuit 340 to an external device. Further, the driving control circuit 360 of the present embodiment is used for driving the driving mechanism 330 to rotate, and the driving control circuit 360 can supply power to the antenna assembly 320, the signal processing circuit 340 and the signal transmission circuit 350.

The mounting base 370 of the present embodiment includes a first base 371, a second base 372 and a cover 372, wherein the first base 371 is used for fixing the body of the driving mechanism 330 on the base 310, the second base 372 is used for covering the rotating component, the second base 372 is used for fixing the antenna assembly 320 and the signal processing circuit 340, and the cover 372 is covered on the second base 372. In this embodiment, the base 310, the first seat 371, the body of the driving mechanism 330, the second seat 372 and the cover 372 form a closed electromagnetic shielding space, and the signal transmission circuit 350 and the driving control circuit 360 are accommodated in the electromagnetic shielding space.

The utility model discloses rotatory microwave radar 300 of machinery forms an inclosed electromagnetic shield space through the organism of base 310, first pedestal 371, actuating mechanism 330, second pedestal 372 and lid 372 jointly, accepts in continuous electromagnetic shield space signal transmission circuit 350 and drive control circuit 360 etc. strong to external disturbance and the structure that easily receives external disturbance, realizes the effective shielding of the rotatory microwave radar 300 internal circuit system of machinery.

For example, in one embodiment, the driving mechanism 330 is an external rotor motor, please refer to fig. 1 again, the external rotor motor includes a rotating shaft 331, a rotor shell 332 sleeved on one end of the rotating shaft 331 near the top, and a stator shell 333 sleeved on one end of the rotating shaft 331 near the bottom, a body of the driving mechanism 330 includes the rotor shell 332 and the stator shell 333, and the rotor shell 332 is rotatably connected to the top of the stator shell 333. In this embodiment, the rotating shaft 331 rotates to rotate the rotor housing 332, and the stator housing 333 is stationary. The rotating component of this embodiment includes a rotating shaft 331 and a rotor case 332, the rotor case 332 drives the antenna assembly 320 to rotate together, the stator case 333 is fixedly connected to the base 310 through a first base 371, and a second base 372 is fixedly connected to the rotor case 332. In this embodiment, the first base 371 is a stator support, and the second base 372 is a rotor support.

For example, the first seat 371 is a circular ring structure, the first seat 371 covers the base 310, and referring to fig. 1 and fig. 6, one end of the first seat 371 abuts against the base 310, and the other end abuts against the stator casing 333. Further, the first housing 371 is fixedly connected to the base 310 and the stator housing 333 through a fixing member, such as a screw, so that the first housing 371 is stably connected to the base 310 and the stator housing 333.

For example, referring to fig. 2 and 4, the second base 372 is connected to the cover 372 and the rotor housing 332 in an abutting manner, so as to seal the rotating shaft 331 in the electromagnetic shielding space. Specifically, the cover 372 and the rotor case 332 abut against both sides of the second base 372, and when the rotation shaft 331 is a hollow rotation shaft, the structure can prevent electromagnetic leakage from the hollow space of the rotation shaft 331. Further, the second housing 372 and the cover 372 and the rotor case 332 may be fixedly connected by a fixing member, such as a screw, so that the second housing 372 and the cover 372 and the rotor case 332 are stably connected.

In this embodiment, the body of the driving mechanism 330, the first seat 371, the second seat 372, the cover 372 and the base 310 are metal structures, wherein the body of the driving mechanism 330, the first seat 371, the second seat 372, the cover 372 and the base 310 can be metal structures made of the same material or different materials, for example, the body of the driving mechanism 330, the first seat 371, the second seat 372, the cover 372 and the base 310 are made of aluminum alloy, and the body of the driving mechanism 330, the first seat 371, the second seat 372, the cover 372 and the base 310 form a metal shielding cover together, thereby achieving effective shielding of the internal circuit system of the radar.

The surface of the metal structure has an oxide layer due to oxidation, and the existence of the oxide layer leads to poor contact conduction effect between the metal structures, so that the connection surface (as shown in fig. 2) of the first base body 371 and the base 310 can be processed by laser etching to enhance the conduction between the first base body 371 and the base 310, thereby improving the electromagnetic shielding effect of the metal shielding case; it should be understood that the connection surface between the first base 371 and the stator casing 333, the connection surface between the second base 372 and the rotor casing 332, and the connection surface between the second base 372 and the cover 372 may also be processed by laser etching to enhance the electrical conductivity, so as to improve the electromagnetic shielding effect of the metal shielding case.

In addition, in the existing radar design, because the connection of an internal circuit system is mostly connected by adopting an electronic cable, the occupied space of the electronic cable is larger, the effective utilization rate of the internal space of the radar is reduced, and the difficulty of miniaturization and light weight of the radar is increased. In this regard, the antenna assembly 320 and the signal processing Circuit 340, the signal processing Circuit 340 and the signal transmission Circuit 350, and the driving control Circuit 360 and the driving mechanism 330 according to the embodiment of the present invention are respectively flexibly connected through the FPC connecting line 380(FPC english-generic: Flexible Printed Circuit), and the internal wiring of the mechanical rotation microwave radar 300 is made compact by adopting the Flexible connection of the FPC connecting line 380. Moreover, the FPC connection line 380 is attached to the side wall of the corresponding circuit, so that the internal wiring of the mechanical rotation microwave radar 300 is further made compact.

The shape of the FPC connecting line 380 may be designed as required, and in order to increase the compactness of the structure and to reduce the volume of the mechanical rotation microwave radar 300, the FPC connecting line 380 may be optionally a sheet-like structure.

Further, in order to ensure that the FPC connection line 380 is stably connected to the corresponding circuit and prevent a communication failure caused by unstable connection of the FPC connection line 380, in some embodiments, one end of the FPC connection line 380, which is connected to the corresponding circuit, is fixed on a sidewall of the corresponding circuit by a pressing structure. The compacting structure may include additional added compacting structures, such as a tablet; the compacting structure may also comprise a frame of the mechanically rotating microwave radar 300, the type of compacting structure being determined in particular by the structure surrounding the corresponding circuit. In addition, the surface of the FPC connection line 380 may also be provided with an electromagnetic shielding film, which improves the electromagnetic shielding effect of the mechanical rotation microwave radar 300.

The antenna element 320 and the signal processing circuit 340 of this embodiment form a cover body in an enclosing manner, the cover body is disposed on the second base 372, and the cover body is fixedly connected to the second base 372. Referring to fig. 1 and 7, the antenna assembly 320 may include a radio frequency board 321 and a height-fixed radar board 322, where the height-fixed radar board 322 is used to measure the height of a structure (such as a movable platform) carrying the mechanical rotation microwave radar 300 from the ground or an obstacle below the structure, the radio frequency board 321 is an antenna board of the mechanical rotation microwave radar 300, and the radio frequency board 321 is provided with a transmitting antenna, a receiving antenna, a radio frequency signal processing circuit 340, and the like. In this embodiment, the rf board 321 and the signal processing circuit 340 are disposed opposite to each other on two sides of the mounting base 370, and the rf board 321 is substantially parallel to the signal processing circuit 340. The height-fixed radar board 322 is sandwiched between the radio frequency board 321 and the signal processing circuit 340, and the height-fixed radar board 322 is disposed above the second base 372. The signal processing circuit 340, the radio frequency board 321 and the height-fixed radar board 322 together form the enclosure. Optionally, the signal processing circuit 340, the rf board 321 and the fixed-height radar board 322 are respectively connected to the second base 372.

Referring to fig. 1, the FPC connection line 380 includes a first FPC connection line 381 and a second FPC connection line 382, wherein the first FPC connection line 381 is used for connecting the radio frequency board 321 and the signal processing circuit 340, and the second FPC connection line 382 is used for connecting the height-fixing radar board 322 and the signal processing circuit 340. Referring to fig. 7, the first FPC connecting line 381 is substantially parallel to the height-fixing radar board 322, which is advantageous for the compact design of the structure. Moreover, the first FPC connecting line 381 is located at the end of the same side of the rf board 321 and the signal processing circuit 340, so as to prevent the first FPC connecting line 381 from generating electromagnetic interference with the rf circuit module of the rf board 321 and the height-fixed radar board 322.

One end of the first FPC connection line 381 and the second FPC connection line 382 connected to the signal processing circuit 340 are pressed and fixed on the signal processing circuit 340 by a pressing sheet.

Further optionally, the second base 372 is provided with a fixing hole, one end of the second FPC connecting line 382 is connected to the height-fixed radar board 322, and the other end of the second FPC connecting line 382 is connected to the signal processing circuit 340 after penetrating through the fixing hole, and the second FPC connecting line 382 is fixed by pressing through the fixing hole on the second base 372.

Referring to fig. 1 and 5, the rf board 321 and the elevation-determining radar board 322 are respectively fixedly connected to the second base 372 through a supporting board 390. Optionally, one end of the first FPC connection line 381 connected to the radio frequency board 321 and one end of the second FPC connection line 382 connected to the height-fixed radar board 322 are respectively pressed and fixed by the corresponding support plate 390. Optionally, the rf board 321 is substantially parallel to the corresponding support board 390 and the elevation radar board 322 is substantially parallel to the corresponding support board 390.

An electromagnetic shielding structure may be designed between the rf board 321 and the outer edge of the corresponding supporting board 390 (i.e., the supporting board 390 where the rf board 321 is fixed on the second base 372), so as to shield the rf circuit module (such as the transmitting antenna, the receiving antenna, and the rf signal processing circuit 340) on the rf board 321. An electromagnetic shielding structure may also be designed between the height-fixed radar board 322 and the outer edge of the corresponding support plate 390 (i.e., the support plate 390 where the height-fixed radar board 322 is fixed on the second base 372), so as to shield the cavity of the rf circuit module on the height-fixed radar board 322.

Specifically, the edges of the radio frequency board 321 and the height-fixed radar board 322 are respectively provided with a first conductive part, optionally, the first conductive part is a conductive layer or a ground layer of the radio frequency board 321 and the height-fixed radar board 322, and the first conductive part may be configured as a conductive layer or a ground layer as required. Accordingly, the corresponding position of the support plate 390 is provided with a first contact portion capable of conducting electricity, that is, a position on the support plate 390 opposite to the first conductive portion is provided with a first contact portion. The first contact portion can be formed on the support plate 390 in different manners, for example, in some examples, the first contact portion is integrally formed with the support plate 390 without additional welding or assembling, and the support plate 390 has good consistency with the first contact portion. In other examples, the first contact portion is assembled with the support plate 390, for example, the first contact portion may be hermetically connected to the support plate 390 by a screw connection, a snap connection, or an adhesive, to facilitate independent machining of the first contact portion and the support plate 390.

In this embodiment, the first contact portion is matched with the shape of the conductive portion, so that the first contact portion can better seal the first conductive portion, thereby forming an electromagnetic shield at the edges of the rf board 321 and the height-determining radar board 322. Note that, matching the shape of the first contact portion and the first conductive portion may refer to: the shape of the first contact portion is completely the same as the shape of the first conductive portion, or the shape of the first contact portion is substantially the same as the shape of the first conductive portion.

Also, the first contact portion of the present embodiment is used to connect with the first conductive portion. Optionally, the first contact portion includes a first side portion and a first slot surrounded by the first side portion. It is understood that the structure of the first contact portion is not limited to the structural form of the first side portion and the first slot, and other structures can be designed.

The first flexible conductive structure is filled in the first slot of the embodiment, and the first flexible conductive structure is in contact with the first side portion. In this embodiment, when the radio frequency board 321 and the height-fixed radar board 322 are respectively and fixedly connected to the corresponding supporting board 390, the first contact portion covers the first conductive portion, and the first conductive portion is in sealing contact with the first contact portion through the first flexible conductive structure, the first conductive portion is in sealing contact with the first contact portion by using the first flexible conductive structure, the first flexible conductive structure is deformed by compression, so that the first conductive portion is firmly contacted with the first contact portion, and the first conductive portion is contacted with the first contact portion for conduction, thereby realizing metal isolation between the radio frequency board 321 and the height-fixed radar board 322 and the outside, and controlling mutual influence between the radio frequency board 321 and the height-fixed radar board 322 and an external electric field, a magnetic field and an electromagnetic wave; meanwhile, the first conductive parts on the radio frequency board 321 and the height-fixed radar board 322 are in contact with the first contact part through the first flexible conductive structure, and heat generated in the working process of the radio frequency board 321 and the height-fixed radar board 322 can be led out through the first flexible conductive structure and the first contact part, so that the function of radiating the radio frequency board 321 and the height-fixed radar board 322 is realized.

In some examples, the first side portion is a continuous structure, i.e., the first side portion is a complete and uninterrupted structure, thereby ensuring that the first flexible conductive structure is uniform and complete. In yet other examples, the first side portion includes a plurality of segments, and adjacent segments of the first side portion are spaced apart. Compared with the continuous first side part, the segmented first side part can have gaps between the adjacent segments of the first side part, for example, the first side part is arranged into a multi-segment type, the corner part of the continuous first side part can be removed, so that the shape of the first contact part formed by splicing the segments of the first side part is approximately the same as that of the first conductive part, and the design omits the step of filling the first flexible conductive structure in the corner part, so that the filling process of the first flexible conductive structure can be simplified.

The shape of the first slot can be selected according to the requirement, and the first slot of the present embodiment can be cylindrical, U-shaped or V-shaped, or other shapes. In addition, the size of the first slot can be designed according to requirements.

The first flexible conductive structure of this embodiment is conductive adhesive structure, can adopt the gluing machine to form conductive adhesive structure in first fluting, and automatic gluing mode realizes that the process is simple, and can ensure that conductive adhesive structure's homogeneity is good. It is understood that the first flexible conductive structure is not limited to the conductive adhesive material, and may be other flexible conductive materials.

Optionally, the first conductive part is in press fit with the first flexible conductive structure, so that the contact between the first conductive part and the first contact part is ensured to be firmer.

In some embodiments, the first flexible conductive structure is provided with a receiving groove, and when the rf board 321 and the height-determined radar board 322 are respectively and fixedly connected to the corresponding supporting board 390, the first conductive part is received in the receiving groove. The accommodating groove is formed in the first flexible conductive structure, so that the first conductive part is convenient to fix, and the first conductive part and the first contact part are more firm in contact. Wherein the depth of the receiving groove can be set as desired, for example, in some embodiments, the depth of the receiving groove is 0.6mm ± 0.05mm, such as 0.6 mm. In addition, the shape of the receiving groove can be set according to the requirement, for example, the receiving groove can be cylindrical, U-shaped or V-shaped or other shapes. It will be appreciated that the first conductive portion may be secured to the first flexible conductive structure by other means.

Referring again to fig. 1, signal transmission circuitry 350 may include an RX control board 351(RX english full: receive) and an RX antenna board 352, wherein RX control board 351 is configured to be communicatively coupled to signal processing circuitry 340, RX antenna board 352 is configured to be communicatively coupled to drive control circuitry 360, and RX antenna board 352 is capable of communicating with an external device (e.g., a mobile platform). The RX antenna board 352 and the RX control board 351 of the present embodiment are connected by a signal line 3100, and optionally, the rotating component includes a hollow rotating shaft 331, and the signal line 3100 is accommodated in the hollow space of the rotating shaft 331, so that the design structure is more compact; of course, the RX antenna board 352 and the RX control board 351 may also be communicatively connected based on a wireless communication manner (e.g., wifi).

In this embodiment, the RX control board 351 is sandwiched and fixed between the second base 372 and the cover 372, and the RX antenna board 352 is fixed at the bottom of the rotating component, and optionally, the RX antenna board 352 is fixed at one end of the rotating shaft 331 near the bottom, in this embodiment, the rotating shaft 331 rotates, and the RX antenna board 352 is stationary.

Referring to fig. 1 again, the FPC connection line 380 may include a third FPC connection line 383, one end of the third FPC connection line 383 is connected to the signal processing circuit 340, and the other end of the third FPC connection line 383 passes through a gap at a connection position of the cover 372 and the RX control board 351 and is connected to the RX control board 351. The cover 372 can press the third FPC connection line 383 onto the RX control board 351, that is, the cover 372 presses and fixes the third FPC connection line 383. Optionally, one end of the third FPC connecting line 383, which is connected to the signal processing circuit 340, is pressed and fixed by a pressing sheet. The third FPC connection line 383 of the present embodiment is attached to the second base 372 to reduce the space occupancy.

An electromagnetic shielding structure may be designed between the cover 372 and the RX control board 351 and/or between the second base 372 and the RX control board 351 to shield the RX control board 351 from a cavity. Referring to fig. 3, the edge of the side of the cover body 372 facing the RX control board 351 and/or the edge of the side of the second base body 372 facing the RX control board 351 are provided with second contact portions capable of conducting electricity, and the second contact portions can be formed on the cover body 372 and/or the second base body 372 by different methods. In other examples, the second contact portion is assembled with the cover 372 and/or the second seat 372, for example, the second contact portion can be hermetically connected with the cover 372 and/or the second seat 372 by a screw connection, a snap connection, or an adhesive, which facilitates independent processing of the second contact portion and the cover 372 and/or the second seat 372. Accordingly, the corresponding position of the RX control board 351 (the edge of the RX control board 351 facing the cover 372 and/or the edge of the RX control board 351 facing the second seat 372) is provided with a second conductive part, optionally, the second conductive part is a conductive layer or a ground layer of the RX control board 351, and the second conductive part can be provided as a conductive layer or a ground layer as required.

In this embodiment, the second contact portion is matched with the shape of the second conductive portion, so that the second contact portion can better seal the second conductive portion, thereby forming an electromagnetic shield at the edge of the RX control board 351. Note that, matching the shape of the second contact portion with the shape of the second conductive portion may refer to: the shape of the second contact portion is completely the same as the shape of the second conductive portion, or the shape of the second contact portion is substantially the same as the shape of the second conductive portion.

The second contact portion of the present embodiment is used to connect with the second conductive portion. Optionally, the second contact portion includes a second side portion and a second slot surrounded by the second side portion. It is understood that the structure of the second contact portion is not limited to the structural form of the second side portion and the second slot, and other structures can be designed.

The second flexible conductive structure is filled in the second slot of the embodiment, and the second flexible conductive structure is in contact with the second side portion. In this embodiment, when the RX control board 351 is fixedly connected to the cover 372 and/or the second base 372, the second contact portion covers the second conductive portion, and the second conductive portion is in sealed contact with the second contact portion through the second flexible conductive structure, the second flexible conductive structure is used to make the second conductive portion in sealed contact with the second contact portion, the second flexible conductive structure is deformed by pressure, so that the second conductive portion is firmly contacted with the second contact portion, and the second conductive portion is contacted with the second contact portion for conduction, thereby realizing metal isolation between the RX control board 351 and the outside, and controlling mutual influence of an electric field, a magnetic field, and electromagnetic waves between the RX control board 351 and the outside; meanwhile, a second conductive part on the RX control board 351 is in contact with the second contact part through the second flexible conductive structure, and heat generated in the working process of the RX control board 351 can be led out through the second flexible conductive structure and the second contact part, so that the function of radiating the RX control board 351 is realized.

The structure of the second conductive portion is similar to that of the first conductive portion, the structure of the second contact portion is similar to that of the first contact portion, and the matching manner of the second conductive portion and the second contact portion is similar to that of the first conductive portion and the first contact portion.

Referring to fig. 1 again, the driving control circuit 360 may include a TX control board 361(TX english full name: transport, chinese full name: transmission) and a TX power supply board 362, wherein the TX control board 361 is fixedly connected to the body of the driving mechanism 330, and optionally, the TX control board 361 is fixedly connected to the rotor housing 332. Further, the base 310 is provided with an accommodating space, the TX power supply board 362 is accommodated in the accommodating space, and the TX power supply board 362 can be electrically connected with an external power supply, so that power supply to the mechanical rotation microwave radar 300 is realized through the TX power supply board 362.

Further, referring to fig. 1 again, the FPC connection line 380 may further include a fourth FPC connection line 384 and a fifth FPC connection line 384, wherein one end of the fourth FPC connection line 384 is connected to the control end of the driving mechanism 330 and/or the sensor on the driving mechanism 330, the other end of the fourth FPC connection line 384 is connected to the TX control board 361, the TX control board 361 can control the driving mechanism 330 to rotate through the fourth FPC connection line 384, and can obtain the operating parameters of the driving mechanism 330 collected by the sensor on the driving mechanism 330 through the fourth FPC connection line 384. Optionally, the driving mechanism 330 is a three-phase motor, the control end of the driving mechanism 330 is a three-phase control end of the three-phase motor, and the TX control board 361 transmits a control signal to the three-phase control end through a fourth FPC connection 384, so that the three-phase motor is powered on to rotate; alternatively, the sensor is an angle detection sensor, such as a hall sensor, the TX control board 361 obtains the rotation speed of the rotating component of the driving mechanism 330 detected by the angle detection sensor through the fourth FPC connection 384, and further adjusts the control signal sent by the TX control board 361 to the driving mechanism 330 according to the rotation speed, so as to form a closed-loop control of the driving mechanism 330.

The TX control board 361 and the TX power supply board 362 are connected by a fifth FPC connection line 384. Optionally, the first holder 371 and the base 310 are respectively provided with a through hole, the fifth FPC connection line 384 sequentially passes through the through hole of the first holder 371 and the through hole of the base 310 and then is connected to the TX power supply board 362, and the fifth FPC connection line 384 is pressed and fixed through the through holes of the first holder 371 and the base 310. Further optionally, the through hole and the fifth FPC connection line 384 are sealed by a metal sealing layer, which may be a copper foil layer, preventing electromagnetic signals from leaking from the through hole.

Further, the portion of the second base 372 for fixing the signal processing circuit 340 abuts against the outer sidewall of the first base 371, and the fifth FPC connecting wire 384 is sandwiched between the portion of the second base 372 for fixing the signal processing circuit 340 and the outer sidewall of the first base 371. This kind of wiring mode has rationally utilized the clearance between second pedestal 372 and first pedestal 371, does not occupy the exterior space of structure, has improved the space utilization of mechanical rotation microwave radar 300 to reduce the whole external diameter of mechanical rotation microwave radar 300.

The mechanical rotation microwave radar 300 of the present embodiment is powered based on a wireless power supply manner to realize 360-degree rotation. Referring to fig. 1, mechanical rotary microwave radar 300 may further include a transmitting coil 3200 and a receiving coil 3300, where transmitting coil 3200 and receiving coil 3300 are both accommodated in the electromagnetic shielding space. Wherein, the transmitting coil 3200 is accommodated in the accommodating space, and the transmitting coil 3200 is provided at a side of the TX power supply board 362 facing the driving mechanism 330, and the transmitting coil 3200 is connected to the TX power supply board 362 to supply power to the transmitting coil 3200 through the TX power supply board 362. Further, the receiving coil 3300 is fixed to the bottom of the rotating member, and the receiving coil 3300 is provided at an interval from the transmitting coil 3200. In this embodiment, the receiving coil 3300 cooperates with the transmitting coil 3200 to supply power to the antenna assembly 320, the signal processing circuit 340, the signal transmission circuit 350, and the TX control board 361.

In this embodiment, the transmitting coil 3200 is connected to an external power source through the TX power board 362, a direct current of the external power source is converted into an alternating current through the TX power board 362, and a frequency of the current is adjusted by the TX power board 362, thereby adjusting an electromagnetic field transmitted by the transmitting coil 3200. The TX power supply board 362 supplies power to the driving mechanism 330 via the TX control board 361.

Further, the receiving coil 3300 is connected to the RX control board 351, the signal processing circuit 340, and the antenna assembly 320 via the RX antenna board 352, and alternating current is converted into direct current by the RX antenna board 352, so that the RX control board 351, the signal processing circuit 340, and the antenna assembly 320 are supplied with power. Optionally, the RX antenna board 352 includes a rectifying circuit. Optionally, the power supply path comprises: external power supply- > TX power supply board 362- > transmitting coil 3200- > receiving coil 3300- > RX antenna board 352- > signal line 3100- > RX control board 351- > signal processing circuit 340- > antenna assembly 320.

Optionally, the surfaces of the transmitting coil 3200 and the receiving coil 3300 are provided with electromagnetic wave absorbing layers to prevent radiation interference leakage caused by wireless power supply.

Referring to fig. 8 and 9, an embodiment of the present invention further provides a movable platform, which may include a frame 100, a control system 200, and a mechanical rotation microwave radar 300, wherein the structure, function, working principle, and effect of the mechanical rotation microwave radar 300 may be described in the embodiments, and are not repeated herein.

In this embodiment, the mechanical rotation microwave radar 300 is disposed on the rack 100, and optionally, the base 310 of the mechanical rotation microwave radar 300 is detachably connected to the rack 100, for example, the base 310 is detachably connected to the rack 100 by using quick-release connection methods such as a buckle, a threaded connection, and a quick-release connection member.

Also, the mechanical rotation microwave radar 300 is communicatively connected to the control system 200, and specifically, the RX antenna board 352 of the mechanical rotation microwave radar 300 is communicatively connected to the control system 200. Illustratively, the control system 200 of the present embodiment includes a flight controller, and the RX antenna board 352 of the mechanical rotation microwave radar 300 is in communication connection with the flight controller to send the detected obstacle information to the flight controller, and the flight controller can control the flight of the unmanned aerial vehicle according to the received obstacle information, so as to implement obstacle avoidance of the unmanned aerial vehicle.

Optionally, the movable platform is an unmanned vehicle, or an unmanned aerial vehicle. Wherein, unmanned vehicles includes unmanned aerial vehicle.

Taking the movable platform as an unmanned aerial vehicle as an example, please refer to fig. 9, the frame 100 may include a main body 110 and foot rests 120 connected to two sides of the bottom of the main body 110. Further, the rack 100 may further include a horn 130 coupled to both sides of the body 110. Alternatively, the mechanically rotating microwave radar 300 is fixedly attached to the foot rest 120. Of course, the mechanical rotation microwave radar 300 can also be fixedly connected to the body 110 or the arm 130.

Unmanned aerial vehicle can be for taking photo by plane unmanned aerial vehicle, plant protection unmanned aerial vehicle, electric power patrol and examine unmanned aerial vehicle or the unmanned aerial vehicle of other functions. Additionally, unmanned aerial vehicle can be many rotor unmanned aerial vehicle, also can be fixed wing unmanned aerial vehicle, and is exemplary, for many rotor unmanned aerial vehicle between the people, like four rotor unmanned aerial vehicle or eight rotor unmanned aerial vehicle. The end of the horn 130 remote from the fuselage 110 may be connected to a propeller (not shown) to provide flight power for the drone.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mechanical rotary microwave radar, comprising:

a base;

2. The mechanical rotary microwave radar as recited in claim 1, wherein the driving mechanism is an external rotor motor, the external rotor motor includes a rotating shaft, a rotor shell sleeved on an end of the rotating shaft near a top portion, and a stator shell sleeved on an end of the rotating shaft near a bottom portion, the body of the driving mechanism includes the rotor shell and the stator shell, and the rotor shell is rotatably connected to a top portion of the stator shell;

3. The mechanical rotary microwave radar of claim 2, wherein the second housing is in abutting connection with the cover and the rotor housing, respectively, to seal the rotating shaft within the electromagnetic shielding space.

4. The mechanical rotary microwave radar of claim 1, wherein the antenna assembly and the signal processing circuit, the signal processing circuit and the signal transmission circuit, and the driving control circuit and the driving mechanism are flexibly connected through an FPC connecting line, and the FPC connecting line is attached to a side wall of the corresponding circuit.

5. The mechanical rotation microwave radar of claim 4, wherein one end of the FPC connecting wire connected with the corresponding circuit is fixed on a side wall of the corresponding circuit through a compression structure; and/or the presence of a gas in the gas,

6. The mechanical rotary microwave radar of claim 4, wherein the antenna assembly and the signal processing circuit are enclosed to form a housing, and the housing is disposed on the second base and fixedly connected to the second base.

7. Mechanical rotary microwave radar according to claim 4 or 6, characterized in that said antenna assembly comprises a radiofrequency board and a height-defining radar board;

8. The mechanical rotary microwave radar of claim 7, wherein the FPC connection lines include a first FPC connection line for connecting the radio frequency board and the signal processing circuit and a second FPC connection line for connecting the level radar board and the signal processing circuit;

9. The mechanical rotation microwave radar as claimed in claim 8, wherein the second base has a fixing hole, and one end of the second FPC connecting line is connected to the height-fixed radar board, and the other end of the second FPC connecting line is connected to the signal processing circuit after passing through the fixing hole.

10. The mechanical rotary microwave radar of claim 7, wherein the radio frequency board and the elevation radar board are fixedly connected to the second base through a support board, respectively, and the radio frequency board is substantially parallel to the corresponding support board and the elevation radar board is substantially parallel to the corresponding support board;

11. The mechanical rotary microwave radar of claim 10, wherein the first flexible conductive structure is a conductive gel structure; and/or the presence of a gas in the gas,

12. The mechanical rotary microwave radar of claim 4, wherein the signal transmission circuit includes an RX control board for communicative connection with the signal processing circuit and an RX antenna board for communicative connection with the drive control circuit and capable of communicating with an external device, the RX antenna board being connected to the RX control board by a signal line;

13. The mechanical rotary microwave radar of claim 12, wherein the rotating member includes a hollow rotating shaft, and the signal line is received in a hollow space of the rotating shaft.

14. The mechanical rotary microwave radar of claim 12, wherein an edge of a side of the cover facing the RX control board and/or an edge of a side of the second housing facing the RX control board is provided with a second contact portion capable of conducting electricity, a corresponding position of the RX control board is provided with a second conductive portion, the second contact portion matches with a shape of the second conductive portion, and the second contact portion is used for being connected with the second conductive portion;

15. The mechanical rotation microwave radar of claim 12, wherein the FPC connection line includes a third FPC connection line, one end of the third FPC connection line is connected to the signal processing circuit, and the other end of the third FPC connection line is connected to the RX control board after passing through a gap at a connection of the cover and the RX control board, and the cover can press the third FPC connection line on the RX control board.

16. The mechanical rotary microwave radar of claim 12, wherein the driving control circuit comprises a TX control board and a TX power supply board, wherein the TX control board is fixedly connected with the body of the driving mechanism;

17. The mechanical rotary microwave radar as claimed in claim 16, wherein the first base and the base are respectively provided with a through hole, and the fifth FPC connecting line passes through the through holes and then is connected to the TX power supply board.

18. The mechanical rotary microwave radar of claim 17, wherein the through hole and the fifth FPC connection line are sealed by a metal sealing layer.

19. The mechanical rotary microwave radar of claim 16 further comprising a transmit coil and a receive coil housed within the electromagnetic shielding space;

20. The mechanical rotary microwave radar of claim 19, wherein the surfaces of the transmitter coil and the receiver coil are provided with electromagnetic wave absorbing layers.

21. The mechanical rotary microwave radar of claim 1, wherein the body of the driving mechanism, the first seat, the second seat, the cover, and the base are metal structures.

22. The mechanical rotary microwave radar of claim 21, wherein a joint surface of the first base and the base is processed by laser etching.

23. A movable platform comprising a frame, a control system and a mechanically rotating microwave radar according to any one of claims 1 to 22;

24. The movable platform of claim 23, wherein the movable platform is an unmanned vehicle or an unmanned aerial vehicle.