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 bracket is connected with the rotation driving piece, and the rotation driving piece is used for driving the antenna bracket to rotate; the antenna circuit board is installed on the antenna support, the antenna circuit board is provided with a first groove, and the first groove is recessed inwards from the edge of the antenna circuit board in the radial direction of the rotation axis; at least part of the grating code disc is located in the first groove; the first grating sensor comprises a first light transmitting tube and a first light receiving tube which are installed on the antenna circuit board, the first light transmitting tube and the first light receiving tube are arranged on the two sides of the first groove respectively, and first light emitted by the first light transmitting tube irradiates the first light receiving tube through the grating coded disc. According to the rotary radar, the first light transmitting tube and the first light receiving tube of the first grating sensor can be directly installed on the antenna circuit board, the difficulty of the manufacturing process of the rotary radar is reduced, and the cost is reduced.

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 installed on a drone needs to know its own rotation angle to determine the direction of the detected object. In related technologies, rotating radars include a grating sensor and a grating code disk. The grating sensor is a photoelectric sensor that works together to determine the rotation angle.

[0003] In related technologies, since the antenna circuit board of the rotating radar needs to be set vertically to the plane where the grating code disk is located, the light emitting tube and light receiving tube of the grating sensor need intermediate adapters to achieve electrical connection with the circuit board, which makes the manufacturing process of the rotating radar more complicated. Utility Model Content

[0004] The present application provides a rotating radar and a UAV, which can directly install the first light emitting tube and the first light receiving tube of the first grating sensor on the antenna circuit board, thereby reducing the difficulty of the rotating radar manufacturing process and reducing the cost.

[0005] In the first aspect, an embodiment of the present application provides a rotating radar, which includes: a rotating driving member; an antenna bracket, connected to the rotating driving member, and the rotating driving member is used to drive the antenna bracket to rotate; an antenna circuit board, installed on the antenna bracket, the antenna circuit board having a first groove, the first groove being recessed radially inward from the edge of the antenna circuit board along the rotation axis; a grating code disk, at least partially located in the first groove; a first grating sensor, including a first light emitting tube and a first light receiving tube installed on the antenna circuit board, wherein the first light emitting tube and the first light receiving tube are respectively arranged on both sides of the first groove, and the first light emitted by the first light emitting tube passes through the grating code disk and shines on the first light receiving tube.

[0006] According to the aforementioned embodiment of the first aspect of the present application, the antenna circuit board includes a main body and an extension portion extending from the main body along the direction of the rotation axis, the extension portion is located on one side of the rotation axis, and the first groove is provided on the extension portion.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the protruding portion includes a first part and a second part connected to each other, the first part is covered by the antenna bracket, the second part is exposed from the antenna bracket, and the first groove is provided in the second part.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the antenna bracket includes a first supporting portion covering the main body and a balancing portion connected to the first supporting portion, and the position of the balancing portion is symmetrical with the position of the protruding portion of the antenna circuit board about the rotation axis.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the grating code disk is provided with a ring-arranged grating structure and a first opening, and the first light emitted by the first light emitting tube passes through the grating structure and shines toward the first light receiving tube. The rotating radar also includes: a second grating sensor, including a second light emitting tube and a second light receiving tube installed on the antenna circuit board, wherein the second light emitting tube and the second light receiving tube are respectively arranged on both sides of the first groove, and when the antenna bracket rotates to a preset position, the second light emitted by the second light emitting tube passes through the first opening and shines toward the second light receiving tube.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the first opening is located at the inner peripheral edge or the outer peripheral edge of the grating code disk.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, the first light emitting tube and the second light emitting tube are side emitting structures, and their bottoms are installed on the antenna circuit board; the first light receiving tube and the second light receiving tube are side receiving structures, and their bottoms are installed on the antenna circuit board.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the rotating radar further includes: a base, the base including a support column extending parallel to the rotation axis, and the grating code disk is mounted on the support column.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, the grating code disk is provided with a ring-shaped arranged grating structure and a connecting hole, and the grating code disk is mounted on the support column through the connecting hole, wherein the connecting hole and the grating structure are respectively located on circles of different radii on the grating code disk, so that the portion of the grating code disk provided with the grating structure is suspended in the first groove.

[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 the rotating radar of the embodiment of the present application, the antenna circuit board has a first groove that is recessed radially inward from the edge of the antenna circuit board along the axis of rotation. At least a portion of the grating code disk is located within the first groove. The recessed direction of the first groove is parallel to the grating code disk. The first grating sensor includes a first light emitting tube and a first light receiving tube mounted on the antenna circuit board, wherein the first light emitting tube and the first light receiving tube are located on either side of the first groove. The first light emitted by the first light emitting tube passes through the grating code disk and shines onto the first light receiving tube, thereby enabling the rotating radar to sense the rotation angle of the antenna circuit board. Because the grating code disk passes through the first groove of the antenna circuit board, a portion of the antenna circuit board structure is present on both sides of the grating code disk. The first light emitting tube and the first light receiving tube located on either side of the grating code disk can be directly mounted on the antenna circuit board. The first light emitting tube and the first light receiving tube no longer require intermediate adapters to be mounted on the antenna circuit board, thereby reducing the difficulty and cost of the rotating radar manufacturing process. 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 bottom-up schematic diagram of the antenna bracket, antenna circuit board, and grating code disk in one embodiment of the rotating radar of the present application;

[0020] Figure 4 This is a cross-sectional schematic diagram of an antenna bracket, an antenna circuit board, and a grating code disk in an embodiment of the rotating radar of the present application;

[0021] Figure 5 This is a structural diagram of the antenna circuit board in an embodiment of the rotating radar of the present application;

[0022] Figure 6 This is a structural diagram of the antenna bracket in an embodiment of the rotating radar of the present application;

[0023] Figure 7 This is a structural diagram of the antenna circuit board in an alternative embodiment of the rotating radar of the present application.

[0024] Description of reference numerals:

[0025] 100-rotating radar;

[0026] 121 - antenna bracket; 121a - first supporting portion; 121c - balancing portion; 121b - second supporting portion; G2 - second groove;

[0027] 122 - antenna circuit board; G1 - first groove; 122a - main body; 122b - extension; P1 - first part; P2 - second part;

[0028] 150 - grating code disk; 151 - first opening; 152 - grating structure; 153 - connection hole;

[0029] 130 - first grating sensor; 131 - first light emitting tube; 132 - first light receiving tube;

[0030] 140 - second grating sensor; 141 - second light emitting tube; 142 - second light receiving tube;

[0031] 160-base; 161-support column.

[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 figures are a perspective schematic diagram and an exploded perspective schematic diagram, respectively, of an embodiment of a rotating radar according to the present application. The rotating radar 100 includes a rotational driver 110, an antenna bracket 121, an antenna circuit board 122, a grating code disk 150, and a first grating sensor 130. The antenna bracket 121 is connected to the rotational driver 110, which drives the antenna bracket 121 in rotation. The antenna circuit board 122 is mounted on the antenna bracket 121.

[0037] Figure 3 、 Figure 4 They are respectively a bottom view schematic diagram and a cross-sectional schematic diagram of the antenna bracket, antenna circuit board and grating code disk in one embodiment of the rotating radar of the present application, wherein Figure 3 The AA line shows Figure 4 The location where the cross section is taken. Figure 5 This is a schematic diagram of the structure of the antenna circuit board in one embodiment of the rotating radar of this application. The antenna circuit board 122 has a first groove G1, which is recessed radially inward from the edge of the antenna circuit board 122 along the axis of rotation. The grating code disk 150 is at least partially located within the first groove G1.

[0038] The first optical grating sensor 130 includes a first light emitting diode 131 and a first light receiving diode 132 mounted on the antenna circuit board 122. The first light emitting diode 131 and the first light receiving diode 132 are located on either side of the first groove G1. A first light beam emitted by the first light emitting diode 131 passes through the optical grating code disk 150 and is directed toward the first light receiving diode 132.

[0039] According to the rotating radar 100 of the embodiment of the present application, the antenna circuit board 122 has a first groove G1, which is recessed radially inward from the edge of the antenna circuit board 122 along the axis of rotation. At least a portion of the grating code disk 150 is located in the first groove G1. The recessed direction of the first groove G1 is parallel to the grating code disk 150. The first grating sensor 130 includes a first light emitting tube 131 and a first light receiving tube 132 mounted on the antenna circuit board 122, wherein the first light emitting tube 131 and the first light receiving tube 132 are respectively arranged on both sides of the first groove G1. The first light emitted by the first light emitting tube 131 passes through the grating code disk 150 and shines on the first light receiving tube 132, thereby enabling the rotating radar 100 to sense the rotation angle of the antenna circuit board 122. Since the grating code disk 150 passes through the first groove G1 of the antenna circuit board 122, a portion of the antenna circuit board 122 structure is present on both sides of the grating code disk 150. The first light emitting tube 131 and the first light receiving tube 132 arranged on both sides of the grating code disk 150 can be directly installed on the antenna circuit board 122. The first light emitting tube 131 and the first light receiving tube 132 no longer require intermediate adapters to be installed on the antenna circuit board 122, thereby reducing the difficulty of the manufacturing process of the rotating radar 100 and reducing costs.

[0040] In some embodiments, the antenna circuit board 122 includes a main body 122a and an extension 122b extending from the main body 122a along the rotation axis. The extension 122b is located on one side of the rotation axis, and the first groove G1 is provided in the extension 122b. The main body 122a is arranged with an antenna array.

[0041] In some embodiments, the first groove G1 is recessed inward from the outer edge of the protruding portion 122 b away from the rotation axis.

[0042] In the above embodiment, the antenna circuit board 122 includes an overhang 122b extending from the main body 122a along the rotation axis. This allows the antenna circuit board 122 to effectively cooperate with the grating code disk 150 by only requiring a single first groove G1. This further simplifies the structure of the rotating radar 100 and makes it more compact. In this case, the antenna circuit board 122 has the overhang 122b on one side, while the other side has no other structural components that would obstruct rotation. The first groove G1 does not occupy the regular area of ​​the main body 122a of the antenna circuit board 122, thus facilitating the layout of other key functional components on the antenna circuit board 122, such as the antenna array.

[0043] In some embodiments, the extension 122b includes a first portion P1 and a second portion P2 that are interconnected. The first portion P1 is covered by the antenna bracket 121. The second portion P2 is exposed from the antenna bracket 121. A first groove G1 is provided in the second portion P2. In the above embodiment, the first portion P1 of the extension 122b is still covered by the antenna bracket 121, exposing the second portion P2 outside the antenna bracket 121. In some embodiments, the area of ​​the second portion P2 can be smaller, smaller than that of the first portion P1, so that the smaller second portion P2 of the antenna circuit board 122 is exposed. The first groove G1 is provided in the second portion P2 to facilitate cooperation with the grating code disk 150. The antenna bracket 121 can provide support and fixation for the majority of the antenna circuit board 122, making the antenna circuit board 122 of the rotating radar 100 more structurally stable during rotation.

[0044] Figure 6 This is a schematic diagram of the structure of the antenna bracket in one embodiment of the rotating radar of the present application. In some embodiments, the antenna bracket 121 includes a first support portion 121a covering the main body portion 122a and a balancing portion 121c connected to the first support portion 121a. The balancing portion 121c is positioned symmetrically with the overhanging portion 122b of the antenna circuit board 122 about the rotation axis.

[0045] Optionally, the antenna support 121 further includes a second supporting portion 121 b connected to the first supporting portion 121 a , and the second supporting portion 121 b and the balancing portion 121 c are symmetrically arranged within the antenna support 121 .

[0046] The second supporting portion 121 b may be the first portion P1 covering the protruding portion 122 b.

[0047] The balancing portion 121c serves as a counterweight for the overhanging portion 122b of the antenna circuit board 122, ensuring that the resulting antenna assembly, formed by combining the antenna bracket 121 and the antenna circuit board 122, exhibits improved dynamic balance when rotating about its axis of rotation. If the antenna bracket 121 lacks the second support portion 121b, the weight of the balancing portion 121c is equivalent to the weight of the overhanging portion 122b of the antenna circuit board 122. If the antenna bracket 121 includes the second support portion 121b, the weight of the balancing portion 121c is equivalent to the combined weight of the overhanging portion 122b of the antenna circuit board 122 and the second support portion 121b.

[0048] like Figure 3In some embodiments, the grating code disk 150 includes a ring-shaped grating structure 152 and a first opening 151. In some embodiments, the grating structure 152 includes a plurality of ring-shaped through holes, with the sizes of the through holes and the spacing between adjacent through holes being the same. The first light emitted by the first light emitting tube 131 passes through the grating structure 152 and is directed toward the first light receiving tube 132.

[0049] like Figures 1 to 5 In some embodiments, the rotating radar 100 further includes a second photoelectric sensor 140. The second photoelectric sensor 140 includes a second light emitting diode 141 and a second light receiving diode 142 mounted on the antenna circuit board 122. The second light emitting diode 141 and the second light receiving diode 142 are located on either side of the first groove G1. When the antenna bracket 121 rotates to a predetermined position, a second light beam emitted by the second light emitting diode 141 passes through the first opening 151 and is directed toward the second light receiving diode 142.

[0050] The first grating sensor 130 cooperates with the grating code disk 150 for angle detection. The second grating sensor 140 cooperates with the grating code disk 150 for zero point detection. By coordinating angle detection and zero point detection, the rotation angle of the antenna assembly can be accurately located.

[0051] The first light emitted by the first light emitting tube 131 passes through the grating structure 152 and is directed to the first light receiving tube 132 for angle detection. As the antenna assembly rotates, the through holes and the blocking areas between the through holes in the grating structure 152 alternately allow the first light to pass through and block it. The first light receiving tube 132 counts the intermittent first light rays received and matches the count data with the rotation angle to determine the rotation angle.

[0052] When the antenna assembly rotates to a preset position, a second light beam emitted by second light emitting tube 141 passes through first opening 151 and strikes second light receiving tube 142 for zero-point detection. When the antenna assembly rotates to a position other than the initial preset position, grating code disk 150 blocks the second light beam. Each time the antenna assembly rotates to a preset position, the second light beam passes through first opening 151 and strikes second light receiving tube 142. This preset position corresponds to the zero-point position, thus enabling zero-point detection of the antenna assembly's rotation angle.

[0053] In some embodiments, the first opening 151 is located at the inner or outer edge of the grating code disk 150, so that the first opening 151 has a recessed structure, which facilitates the processing of the first opening 151. In this embodiment, the first opening 151 is located at the inner edge of the grating code disk 150. In other embodiments, the first opening 151 may also be located at the outer edge of the grating code disk 150.

[0054] In some embodiments, the first light emitting tube 131 and the second light emitting tube 141 are side emitting structures and their bottoms are mounted on the antenna circuit board 122 ; the first light receiving tube 132 and the second light receiving tube 142 are side receiving structures and their bottoms are mounted on the antenna circuit board 122 .

[0055] In this embodiment, the first light emitting tube 131 and the second light emitting tube 141 have a side-emitting structure and are bottom-mounted on the antenna circuit board 122. The first light receiving tube 132 and the second light receiving tube 142 have a side-receiving structure and are bottom-mounted on the antenna circuit board 122. By adopting the first light emitting tube 131 and the second light emitting tube 141 with a side-emitting structure and the first light receiving tube 132 and the second light receiving tube 142 with a side-receiving structure, the first light emitting tube 131, the second light emitting tube 141, the first light receiving tube 132, and the second light receiving tube 142 can be directly mounted on the antenna circuit board 122, eliminating the need for an intermediate adapter for installation, further improving the compactness of the structure.

[0056] In some embodiments, the first and second light emitting diodes 131 and 141 are infrared light emitting diodes, and the first and second light receiving diodes 132 and 142 are infrared light receiving diodes. In other embodiments, the first and second light emitting diodes 131 and 141 may also emit other types of light, with the first light receiving diode 132 sensing the same type of light as the light emitted by the first light emitting diode 131, and the second light receiving diode 142 sensing the same type of light as the light emitted by the second light emitting diode 141. For example, the first and second light emitting diodes 131 and 141 may be visible light emitting diodes, and the first and second light receiving diodes 132 and 142 may be visible light receiving diodes. In some embodiments, the first and second light emitting diodes 131 and 141 emit different types of light, for example, one of the first and second light emitting diodes 131 and 141 may be an infrared light emitting diode and the other a visible light receiving diode. This reduces interference between the first and second photoelectric sensors 130 and 140.

[0057] In some embodiments, the rotating radar 100 further includes a base 160. The base 160 includes support columns 161 extending parallel to the rotation axis. The grating code disk 150 is mounted on the support columns 161. In some embodiments, there are multiple support columns 161 to stably fix the grating code disk 150.

[0058] like Figure 3In some embodiments, the grating code disk 150 includes a ring-shaped grating structure 152 and a connecting hole 153. The grating code disk 150 is mounted on the support column 161 through the connecting hole 153. In some embodiments, the connection between the grating code disk 150 and the support column 161 is achieved by fasteners passing through the connecting hole 153 and fastening to the support column 161.

[0059] In this embodiment, the connection holes 153 and the grating structure 152 are located on circumferences of different radii on the grating code disk 150, allowing the portion of the grating code disk 150 where the grating structure 152 is located to remain suspended within the first groove G1. Therefore, when the antenna bracket 121 and antenna circuit board 122 rotate, the grating code disk 150 remains suspended within the first groove G1. There is no structural interference between the rotating antenna bracket 121 and antenna circuit board 122 and other non-rotating components, ensuring smooth rotation.

[0060] In some embodiments, a second groove G2 is defined on an edge of the antenna bracket 121 facing the base 160 , the rotary driving member 110 partially extends into the second groove G2 , and the grating code disk 150 is disposed around the rotary driving member 110 .

[0061] Although not shown in the figures, in some embodiments, the rotating radar 100 may further include a housing, which covers the antenna bracket 121 and the antenna circuit board 122 .

[0062] In the above embodiment, the antenna circuit board 122 includes a main portion 122a and an overhanging portion 122b extending from the main portion 122a along the rotation axis. The overhanging portion 122b is located on one side of the rotation axis, and the first groove G1 is provided in the overhanging portion 122b. In other embodiments, the antenna circuit board 122 may not include the overhanging portion 122b.

[0063] Figure 7 This is a schematic diagram of the structure of the antenna circuit board in an alternative embodiment of the rotating radar of the present application. In one alternative embodiment, the outer contour of the antenna circuit board 122 is a regular shape, such as a rectangle. The antenna circuit board 122 has a first groove G1, which is recessed radially inward from the edge of the antenna circuit board 122 along the axis of rotation. In this alternative embodiment, the first grooves G1 are arranged in pairs, recessed radially inward from both side edges of the antenna circuit board 122 along the axis of rotation. The paired first grooves G1 are symmetrically arranged on the antenna circuit board 122. The grating code disk 150 is disposed through the paired first grooves G1.

[0064] In an alternative embodiment, the first light emitting tube 131 and the first light receiving tube 132 included in the first grating sensor 130 can be arranged on both sides of one of the first grooves G1, and the first light emitted by the first light emitting tube 131 passes through the grating code disk 150 and shines on the first light receiving tube 132.

[0065] Since the grating code disk 150 passes through the first groove G1 of the antenna circuit board 122, a portion of the antenna circuit board 122 is present on both sides of the grating code disk 150. The first light emitting tube 131 and the first light receiving tube 132 provided on both sides of the grating code disk 150 can be directly mounted on the antenna circuit board 122. The first light emitting tube 131 and the first light receiving tube 132 can be mounted on the antenna circuit board 122 without an intermediate adapter, thereby reducing the difficulty of the manufacturing process of the rotating radar 100 and reducing the cost.

[0066] An embodiment of the present application further provides a drone, which includes a fuselage and the rotating radar 100 of any of the aforementioned embodiments, wherein the rotating radar 100 is installed on the fuselage.

[0067] The rotating radar 100 includes a rotary drive 110, an antenna bracket 121, an antenna circuit board 122, a grating code disk 150, and a first grating sensor 130. The antenna bracket 121 is connected to the rotary drive 110, which drives the antenna bracket 121 in rotation. The antenna circuit board 122 is mounted on the antenna bracket 121. The antenna circuit board 122 has a first groove G1, which is recessed radially inward from the edge of the antenna circuit board 122 along the axis of rotation. The grating code disk 150 is at least partially located within the first groove G1. The first grating sensor 130 includes a first light emitting diode 131 and a first light receiving diode 132, which are mounted on the antenna circuit board 122. The first light emitting diode 131 and the first light receiving diode 132 are located on either side of the first groove G1. The first light emitted by the first light emitting diode 131 passes through the grating code disk 150 and is directed to the first light receiving diode 132.

[0068] According to an embodiment of the present application, the drone includes a rotating radar 100, and the antenna circuit board 122 of the rotating radar 100 has a first groove G1, which is recessed radially inward from the edge of the antenna circuit board 122 along the axis of rotation. At least a portion of the grating code disk 150 of the rotating radar 100 is located in the first groove G1. The recessed direction of the first groove G1 is parallel to the grating code disk 150. The first grating sensor 130 includes a first light emitting tube 131 and a first light receiving tube 132 installed on the antenna circuit board 122, wherein the first light emitting tube 131 and the first light receiving tube 132 are respectively arranged on both sides of the first groove G1. The first light emitted by the first light emitting tube 131 passes through the grating code disk 150 and shines on the first light receiving tube 132, thereby enabling the rotating radar 100 to sense the rotation angle of the antenna circuit board 122. Since the grating code disk 150 passes through the first groove G1 of the antenna circuit board 122, a portion of the antenna circuit board 122 structure is present on both sides of the grating code disk 150. The first light emitting tube 131 and the first light receiving tube 132 arranged on both sides of the grating code disk 150 can be directly installed on the antenna circuit board 122. The first light emitting tube 131 and the first light receiving tube 132 no longer require intermediate adapters to be installed on the antenna circuit board 122, thereby reducing the difficulty of the manufacturing process of the rotating radar 100 and reducing costs.

[0069] 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 bracket connected to the rotation driving member, wherein the rotation driving member is used to drive the antenna bracket to rotate; An antenna circuit board is mounted on the antenna bracket, wherein the antenna circuit board has a first groove, and the first groove is recessed inward from an edge of the antenna circuit board along the radial direction of the rotation axis; a grating code disk, at least partially located in the first groove; The first grating sensor includes a first light emitting tube and a first light receiving tube installed on the antenna circuit board, wherein the first light emitting tube and the first light receiving tube are arranged on both sides of the first groove, and the first light emitted by the first light emitting tube passes through the grating code disk and shines towards the first light receiving tube.

2. The rotating radar according to claim 1, characterized in that The antenna circuit board includes a main body and an overhanging portion extending from the main body along the direction of the rotation axis. The overhanging portion is located on one side of the rotation axis, and the first groove is provided in the overhanging portion.

3. The rotating radar according to claim 2, characterized in that The protruding portion includes a first part and a second part connected to each other, the first part is covered by the antenna bracket, the second part is exposed from the antenna bracket, and the first groove is provided in the second part.

4. The rotating radar according to claim 2, characterized in that The antenna bracket includes a first supporting portion covering the main body and a balancing portion connected to the first supporting portion. The balancing portion and the extending portion of the antenna circuit board are symmetrically arranged with respect to the rotation axis.

5. The rotating radar according to claim 1, wherein: The grating code disk is provided with a ring-shaped grating structure and a first opening. The first light emitted by the first light emitting tube passes through the grating structure and is directed to the first light receiving tube. The rotating radar further includes: The second grating sensor includes a second light emitting tube and a second light receiving tube installed on the antenna circuit board, wherein the second light emitting tube and the second light receiving tube are respectively arranged on both sides of the first groove. When the antenna bracket rotates to a preset position, the second light emitted by the second light emitting tube passes through the first opening and shines onto the second light receiving tube.

6. The rotating radar according to claim 5, characterized in that The first opening is located at the inner peripheral edge or the outer peripheral edge of the grating code disk.

7. The rotating radar according to claim 5, characterized in that The first light emitting tube and the second light emitting tube are side emitting structures, and their bottoms are mounted on the antenna circuit board. The first light receiving tube and the second light receiving tube are side receiving structures, and their bottoms are mounted on the antenna circuit board.

8. The rotating radar according to claim 1, wherein: Also includes: The base includes a support column extending parallel to the rotation axis, and the grating code disk is installed on the support column.

9. The rotating radar according to claim 8, characterized in that The grating code disk is provided with a ring-shaped grating structure and a connecting hole, and the grating code disk is mounted on the supporting column through the connecting hole. The connecting holes and the grating structure are respectively located on circles with different radii on the grating code disk, so that a portion of the grating code disk provided with the grating structure is suspended in the first groove.

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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