Rotary radar and unmanned aerial vehicle

Abstract

The utility model discloses a rotary radar and an unmanned aerial vehicle. The rotation radar comprises a rotation driving member; the antenna assembly is connected with the rotation driving piece, and the rotation driving piece is used for driving the antenna assembly to rotate; one of the light emitting component and the light receiving component is mounted on the antenna component and rotates along with the antenna component, and the other one of the light emitting component and the light receiving component is fixedly arranged relative to the fixed part of the rotation driving component; and the light emitting component and the light receiving component are arranged in a way that the light receiving component can receive a synchronous light signal emitted by the light emitting component when the antenna component rotates to any angle. According to the rotary radar, one-way transmission of the synchronizing signal is realized in the form of the optical signal by using the optical transmitting component and the optical receiving component, a slip ring can be replaced, the manufacturing cost of the rotary radar is reduced, the problem that the slip ring is sensitive to vibration is avoided, the optical signal transmission is stable, and the reliability of the rotary radar is improved. And the transmission stability of the synchronizing signal in the rotary radar is improved.

Description

Technical Field

[0001] The present application relates to the field of radar, and in particular to a rotating radar and a UAV. Background Art

[0002] A rotating radar mounted on a drone requires internal signal transmission from the rotating side to the fixed side, or vice versa. For example, the rotating radar requires time to process and transmit data. When the drone controller acquires radar data from the rotating radar, it needs to know the actual acquisition time of the corresponding frame of data. Therefore, a time synchronization signal is required between the rotating radar and the drone controller.

[0003] In rotating radars, the antenna assembly is a rotating component. In related art, slip rings are used to transmit synchronous signals between the rotating antenna assembly and a relatively fixed component. However, slip rings are expensive and sensitive to vibration. Utility Model Content

[0004] The present application provides a rotating radar and a UAV, which can stably realize the unidirectional transmission of the synchronization signal of the rotating radar at a lower cost.

[0005] In a first aspect, an embodiment of the present application provides a rotating radar, comprising: a rotating driving member; an antenna assembly connected to the rotating driving member, the rotating driving member being used to drive the antenna assembly to rotate; a light emitting assembly and a light receiving member, wherein one of the light emitting assembly and the light receiving member is installed on the antenna assembly and rotates with the antenna assembly, and the other is fixed relative to the fixed part of the rotating driving member, and the light emitting assembly and the light receiving member are arranged so that when the antenna assembly rotates to any angle, the light receiving member can receive the synchronous light signal emitted by the light emitting assembly.

[0006] According to the aforementioned embodiment of the first aspect of the present application, the optical receiving element is installed on the antenna assembly and electrically connected to the antenna assembly, and the antenna assembly is configured to synchronize the sampling timing with the synchronization optical signal when the optical receiving element receives the synchronization optical signal.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the rotating driving member includes a driving portion installed on the driving base, and a spacing groove surrounding the outer periphery of the rotating driving member is provided between the driving portion and the driving base. The rotating radar also includes: an adapter circuit board installed on the driving base, and the light emitting component is located on the adapter circuit board and in the spacing groove.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the light emitting assembly includes a plurality of light emitting elements, and the plurality of light emitting elements are arranged around the periphery of the rotating driving element.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the light emitting surface of each light emitting element is arranged away from the central axis of the rotating driving element.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the rotating radar further includes: a control circuit board, the adapter circuit board is connected to the control circuit board via a floating connector, and the control circuit board can control the optical emitting component to emit the synchronous optical signal.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the antenna assembly includes an antenna bracket and an antenna circuit board, the antenna bracket is connected to the rotating driving member, the antenna circuit board is installed on the antenna bracket, and the light receiving element is installed on the antenna circuit board.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the antenna circuit board includes an external leakage portion extending outward relative to the antenna bracket, and the light receiving element is located in the external leakage portion.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the light emitting component is an infrared light emitting component, and the light receiving element is an infrared light receiving element.

[0014] In a second aspect, an embodiment of the present application provides a drone, comprising: a fuselage; and a rotating radar according to any of the aforementioned embodiments of the first aspect of the present application, wherein the rotating radar is installed on the fuselage.

[0015] According to an embodiment of the present application, a rotating radar comprises a rotating drive element for driving the rotation of an antenna assembly. The rotating radar further comprises an optical transmitter and an optical receiver. One of the optical transmitter and the optical receiver is mounted on the antenna assembly and rotates with the antenna assembly, while the other is fixed relative to the fixed portion of the rotating drive element. The optical transmitter and the optical receiver are configured so that the optical receiver can receive a synchronization optical signal emitted by the optical transmitter when the antenna assembly rotates to any angle. When the optical transmitter emits a synchronization optical signal, the optical receiver can receive the synchronization optical signal when the antenna assembly rotates to any angle, thereby achieving unidirectional transmission of the synchronization signal from the fixed side to the rotating side of the rotating radar, or from the rotating side to the fixed side of the rotating radar. The rotating radar of the embodiment of the present application utilizes the optical transmitter and the optical receiver to achieve unidirectional transmission of the synchronization signal in the form of an optical signal, which can replace slip rings, reduce the high manufacturing cost of the rotating radar, and avoid the problem of slip rings being sensitive to vibration. The optical signal transmission is stable, thereby improving the transmission stability of the synchronization signal in the rotating radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the rotating radar of the present application;

[0018] Figure 2 This is a three-dimensional exploded schematic diagram of an embodiment of the rotating radar of the present application;

[0019] Figure 3 This is a three-dimensional schematic diagram of an embodiment of the rotating radar of the present application, with some structures hidden;

[0020] Figure 4 This is a top view of an embodiment of the rotating radar of the present application, with some structures hidden;

[0021] Figure 5 This is a schematic exploded perspective view of an antenna assembly in an embodiment of the rotating radar of the present application.

[0022] Description of reference numerals:

[0023] 100-rotating radar;

[0024] 110 - rotating drive member; 111 - driving base; 112 - driving part; G1 - spacing groove;

[0025] 120 - antenna assembly; 121 - antenna bracket; 122 - antenna circuit board; 122a - external leakage portion;

[0026] 130-light emitting assembly; 131-light emitting element;

[0027] 140-light receiving element;

[0028] 150-base;

[0029] 160-adapter circuit board;

[0030] 170-control circuit board;

[0031] 180-Floating connector.

[0032] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0036] Figure 1 、 Figure 2 The rotating radar 100 includes a rotation driving component 110 , an antenna assembly 120 , a light emitting component 130 , and a light receiving component 140 .

[0037] Antenna assembly 120 is connected to a rotary drive member 110, which is used to drive the rotation of antenna assembly 120. One of optical transmitter 130 and optical receiver 140 is mounted on antenna assembly 120 and rotates with it, while the other is fixed relative to the fixed portion of rotary drive member 110. Optical transmitter 130 and optical receiver 140 are configured so that optical receiver 140 can receive the synchronous optical signal emitted by optical transmitter 130 at any angle of rotation of antenna assembly 120.

[0038] According to the rotating radar 100 of the embodiment of the present application, the rotational drive member 110 is used to drive the rotation of the antenna assembly 120. The rotating radar 100 also includes a light emitting assembly 130 and a light receiving assembly 140. One of the light emitting assembly 130 and the light receiving assembly 140 is mounted on the antenna assembly 120 and rotates with the antenna assembly 120, while the other is fixed relative to the fixed portion of the rotational drive member 110. The light emitting assembly 130 and the light receiving assembly 140 are configured so that the light receiving assembly 140 can receive the synchronization light signal emitted by the light emitting assembly 130 at any angle of rotation of the antenna assembly 120. When the synchronization light signal is emitted by the light emitting assembly 130, the light receiving assembly 140 can receive the synchronization light signal at any angle of rotation of the antenna assembly 120, thereby achieving unidirectional transmission of the synchronization signal from the fixed side to the rotating side of the rotating radar 100, or from the rotating side to the fixed side of the rotating radar 100. The rotating radar 100 of the embodiment of the present application utilizes the optical transmitting assembly 130 and the optical receiving element 140 to implement unidirectional transmission of synchronization signals in the form of optical signals. This can replace slip rings, reduce the high manufacturing cost of the rotating radar 100, and avoid the problem of slip rings being sensitive to vibration. The optical signal transmission is stable, thereby improving the transmission stability of the synchronization signal in the rotating radar 100.

[0039] In some embodiments, the light emitting component 130 is a visible light emitting component, and the light receiving component 140 is a corresponding visible light receiving component.

[0040] In some embodiments, the light emitting component 130 is an infrared light emitting component, and the light receiving component 140 is an infrared light receiving component.

[0041] In some embodiments, the optical receiver 140 is mounted on and electrically connected to the antenna assembly 120 , and the antenna assembly 120 is configured to synchronize sampling timing with the synchronization optical signal when the optical receiver 140 receives the synchronization optical signal.

[0042] The light emitting assembly 130 can be controlled to illuminate and extinguish, and the synchronous light signal can be set to a preset light-on and extinguishing switching mode. In one example, the synchronous light signal is set so that the light emitting assembly 130 switches from extinguishing to emitting light at the target time and switches back to extinguishing instantly, that is, it flashes once at the target time. Because the distance between the light emitting assembly 130 and the light receiving element 140 in the rotating radar 100 is much smaller than the propagation distance of light per unit time, the time when the light receiving element 140 receives the above-mentioned flash moment is almost equal to the target time. The antenna assembly 120 can synchronize the timing of the radar sampling corresponding to the time when the light receiving element 140 receives the flash moment with the target time.

[0043] In some embodiments, the rotating radar 100 further includes a base 150, to which the rotational drive element 110 is mounted, and the antenna assembly 120 rotates relative to the base 150. Optionally, the antenna assembly 120 receives wireless power via a wireless power supply assembly. For example, the wireless power supply assembly includes a power supply coil and an induction coil. The power supply coil is mounted on the base 150, and the induction coil is mounted on the antenna assembly 120. The induction coil and the power supply coil are coupled to receive power.

[0044] Figure 3 A three-dimensional schematic diagram of an embodiment of a rotating radar of this application is shown, with some structures omitted. In some embodiments, the rotating drive member 110 includes a drive base 111 and a drive unit 112 mounted on the drive base 111. The drive base 111 can be mounted on a base 150. The drive unit 112 is used to drive the antenna assembly 120 to rotate. A spacing groove G1 is defined between the drive unit 112 and the drive base 111, surrounding the outer circumference of the rotating drive member 110. The rotating radar 100 also includes an adapter circuit board 160. The adapter circuit board 160 is mounted on the drive base 111, and the optical transmission assembly 130 is located on the adapter circuit board 160 and within the spacing groove G1.

[0045] In the above embodiment, the adapter circuit board 160 is installed on the driving base 111, and the light emitting component 130 is located on the adapter circuit board 160 and in the spacing groove G1. On the one hand, the adapter circuit board 160 can provide stable light emission control and power supply for the light emitting component 130. On the other hand, the structure of the rotating radar 100 is made compact, avoiding the installation of the light emitting component 130 in the rotating radar 100 from occupying too large a volume.

[0046] Figure 4 In some embodiments, the light emitting assembly 130 includes a plurality of light emitting elements 131 , which are arranged around the periphery of the rotating drive element 110 .

[0047] When the light emitting assembly 130 is an infrared light emitting assembly, the plurality of light emitting elements 131 are infrared light emitting elements.

[0048] In some embodiments, the light emitting element 131 is a light emitting tube. In some embodiments, each light emitting element 131 is a wide-angle light emitting tube. By arranging multiple light emitting elements 131 around the periphery of the rotating drive element 110, it is possible to ensure that the light receiving element 140 can receive sufficient light at any angle of rotation of the antenna assembly 120, thereby ensuring the transmission stability of the synchronization optical signal.

[0049] In some embodiments, the light-emitting surface of each light-emitting element 131 is disposed away from the central axis of the rotary drive member 110. In some embodiments, the light-receiving element 140 is mounted on the antenna assembly 120 and is located on the outer periphery of the rotary drive member 110. In this embodiment, the light-emitting surface of the light-emitting element 131 is disposed away from the central axis of the rotary drive member 110, so that the light emitted by the light-emitting element 131 can illuminate the light-receiving element 140.

[0050] In some embodiments, the rotating radar 100 further includes a control circuit board 170. The adapter circuit board 160 is connected to the control circuit board 170 via a floating connector 180. The control circuit board 170 can control the optical transmission assembly 130 to transmit a synchronous optical signal.

[0051] In this embodiment, the adapter circuit board 160 is electrically connected to the control circuit board 170, and the optical emission component 130 is electrically connected to the adapter circuit board 160. The first synchronization electrical signal can be transmitted between the control circuit board 170, the adapter circuit board 160, and the optical emission component 130. The optical emission component 130 emits light according to the first synchronization electrical signal to generate a corresponding synchronization optical signal.

[0052] In some embodiments, the control circuit board 170 is in communication with a controller of the drone (eg, a flight controller).

[0053] In some embodiments, the rotating radar 100 further includes a base 150 , and the control circuit board 170 and the adapter circuit board 160 are mounted on the base 150 .

[0054] Figure 5 This is a schematic exploded perspective view of the antenna assembly 120 in one embodiment of the rotating radar 100 of the present application. In some embodiments, the antenna assembly 120 includes an antenna bracket 121 and an antenna circuit board 122. The antenna bracket 121 is connected to the rotation drive 110. The antenna circuit board 122 is mounted on the antenna bracket 121. The light receiving element 140 is mounted on the antenna circuit board 122. The antenna array is arranged on the antenna circuit board 122.

[0055] The optical receiver 140 is mounted on and electrically connected to the antenna circuit board 122. After receiving the synchronization optical signal, the optical receiver 140 generates a second synchronization electrical signal corresponding to the synchronization optical signal and transmits the second synchronization electrical signal to the antenna circuit board 122.

[0056] In some embodiments, the antenna circuit board 122 includes an external leakage portion 122 a extending outward relative to the antenna support 121 , and the light receiving element 140 is located in the external leakage portion 122 a .

[0057] In this embodiment, the antenna circuit board 122 includes an external leakage portion 122a extending outward relative to the antenna bracket 121, and the light receiving element 140 is located in the external leakage portion 122a, so that when the optical transmitting component 130 emits a synchronization light signal, the light receiving element 140 is not blocked by other objects and can receive the synchronization light signal in a timely manner.

[0058] Although not shown in the figures, in some embodiments, the rotating radar 100 may further include a housing, where the housing covers the antenna assembly 120 .

[0059] The present application also provides a drone comprising a fuselage and a rotating radar 100 according to any of the aforementioned embodiments, wherein the rotating radar 100 is mounted on the fuselage. The rotating radar 100 comprises a rotation driver 110, an antenna assembly 120, a light emitting assembly 130, and a light receiving assembly 140.

[0060] Antenna assembly 120 is connected to a rotary drive member 110, which is used to drive the rotation of antenna assembly 120. One of optical transmitter 130 and optical receiver 140 is mounted on antenna assembly 120 and rotates with it, while the other is fixed relative to the fixed portion of rotary drive member 110. Optical transmitter 130 and optical receiver 140 are configured so that optical receiver 140 can receive the synchronous optical signal emitted by optical transmitter 130 at any angle of rotation of antenna assembly 120.

[0061] According to an embodiment of the present application, a drone includes a rotating radar 100, which includes a light emitting assembly 130 and a light receiving element 140. One of light emitting assembly 130 and light receiving element 140 is mounted on an antenna assembly 120 and rotates with the antenna assembly 120, while the other is fixed relative to a fixed portion of a rotation driver 110. Light emitting assembly 130 and light receiving element 140 are configured so that light receiving element 140 can receive a synchronization light signal emitted by light emitting assembly 130 when antenna assembly 120 rotates to any angle. When light emitting assembly 130 emits a synchronization light signal, light receiving element 140 can receive the synchronization light signal regardless of the rotation angle of antenna assembly 120, thereby enabling unidirectional transmission of the synchronization signal from the fixed side to the rotating side of rotating radar 100, or vice versa. The rotating radar 100 of the embodiment of the present application utilizes the optical transmitting assembly 130 and the optical receiving element 140 to implement unidirectional transmission of synchronization signals in the form of optical signals. This can replace slip rings, reduce the high manufacturing cost of the rotating radar 100, and avoid the problem of slip rings being sensitive to vibration. The optical signal transmission is stable, thereby improving the transmission stability of the synchronization signal in the rotating radar 100.

[0062] The above description is only a preferred embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present application.

Claims

1. A rotating radar, characterized in that: include: Rotating drive member; an antenna assembly connected to the rotation driving member, wherein the rotation driving member is used to drive the antenna assembly to rotate; An optical emitting component and an optical receiving component, one of which is installed on the antenna component and rotates with the antenna component, and the other is fixed relative to the fixed part of the rotating drive component. The optical emitting component and the optical receiving component are arranged so that when the antenna component is rotated to any angle, the optical receiving component can receive the synchronous optical signal emitted by the optical emitting component.

2. The rotating radar according to claim 1, characterized in that The light receiving element is mounted on the antenna assembly and electrically connected to the antenna assembly. The antenna assembly is configured to synchronize sampling timing with the synchronization optical signal when the light receiving element receives the synchronization optical signal.

3. The rotating radar according to claim 1, wherein The rotating driving member includes a driving base and a driving portion mounted on the driving base, wherein a spacing groove surrounding the outer circumference of the rotating driving member is provided between the driving portion and the driving base, and the rotating radar further includes: The adapter circuit board is installed on the driving base, and the light emitting component is located on the adapter circuit board and in the spacing groove.

4. The rotating radar according to claim 3, characterized in that The light emitting assembly includes a plurality of light emitting elements, and the plurality of light emitting elements are arranged around the outer circumference of the rotation driving element.

5. The rotating radar according to claim 4, characterized in that The light emitting surface of each light emitting element is arranged away from the central axis of the rotation driving element.

6. The rotating radar according to claim 3, characterized in that Also includes: The control circuit board is connected to the adapter circuit board via a floating connector, and the control circuit board can control the optical transmission component to transmit the synchronous optical signal.

7. The rotating radar according to claim 1, wherein: The antenna assembly includes an antenna bracket and an antenna circuit board. The antenna bracket is connected to the rotation driving component. The antenna circuit board is installed on the antenna bracket. The light receiving component is installed on the antenna circuit board.

8. The rotating radar according to claim 7, characterized in that The antenna circuit board includes an external leakage portion extending outward relative to the antenna bracket, and the light receiving element is located in the external leakage portion.

9. The rotating radar according to claim 1, wherein: The light emitting component is an infrared light emitting component, and the light receiving element is an infrared light receiving element.

10. A drone, characterized in that: include: body; as well as The rotating radar according to any one of claims 1 to 9, wherein the rotating radar is mounted on the fuselage.

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