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, the rotation driving piece is used for driving the antenna assembly to rotate, and the antenna assembly is provided with a first light-transmitting channel and a second light-transmitting channel; the first grating sensor and the second grating sensor are installed on the antenna assembly, the first grating sensor comprises a first light emitting tube and a first light receiving tube, first light emitted by the first light emitting tube irradiates the first light receiving tube through the grating code disc, and the second grating sensor comprises a second light emitting tube and a second light receiving tube; second light emitted by the second light emitting tube irradiates the second light receiving tube through the grating code disc, the first light emitting tube and the first light receiving tube are arranged on the outer sides of the two opposite ends of the first light transmitting channel respectively, and the second light emitting tube and the second light receiving tube are arranged on the outer sides of the two opposite ends of the second light transmitting channel respectively. According to the rotation radar, the reliability of positioning and sensing the rotation angle of the antenna assembly 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 needs to know its own rotation angle to determine the direction of the detected object. In related technologies, rotating radars include two sets of grating sensors, each of which plays a separate role in determining the rotation angle.

[0003] However, when two sets of grating sensors are placed adjacent to each other, it is easy for the optical signals to interfere with each other, making it easy for the rotating radar to make misjudgments when determining the rotation angle. Utility Model Content

[0004] The present application provides a rotating radar and a drone, which improve the reliability of the rotating radar when determining the rotation angle.

[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, the antenna assembly being provided with a first light-transmitting channel and a second light-transmitting channel; a first grating sensor and a second grating sensor being installed on the antenna assembly, the first grating sensor comprising a first light-emitting tube and a first light-receiving tube, the first light emitted by the first light-emitting tube passing through a grating code disk and irradiating the first light-receiving tube, the second grating sensor comprising a second light-emitting tube and a second light-receiving tube, the second light emitted by the second light-emitting tube passing through the grating code disk and irradiating the second light-receiving tube, the first light-emitting tube and the first light-receiving tube being respectively arranged on the outsides of the opposite ends of the first light-transmitting channel, and the second light-emitting tube and the second light-receiving tube being respectively arranged on the outsides of the opposite ends of the second light-transmitting channel.

[0006] According to the aforementioned implementation of the first aspect of the present application, the first grating sensor cooperates with the grating code disk for angle detection; the second grating sensor cooperates with the grating code disk for zero point detection.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, the grating code disk is provided with a first opening and a ring-arranged grating structure, the first light emitted by the first light emitting tube passes through the grating structure and shines toward the first light receiving tube for angle detection, and when the antenna assembly 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 for zero point detection.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the first light-transmitting channel and the second light-transmitting channel are arranged side by side and parallel to each other.

[0009] According to any of the foregoing embodiments of the first aspect of the present application, the antenna assembly includes a shielding portion, which is arranged between the first light emitting tube and the first light receiving tube, and between the second light emitting tube and the second light receiving tube, and the first light-transmitting channel and the second light-transmitting channel are arranged in the shielding portion.

[0010] According to any of the foregoing 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 drive member, the antenna circuit board is installed on the antenna bracket, the shielding portion is located on the antenna bracket, and the first light-transmitting channel and the second light-transmitting channel are formed by the antenna circuit board and the shielding portion.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, a cavity is provided on a surface of the antenna bracket facing the antenna circuit board, the antenna circuit board includes an exposed portion extending outward relative to the antenna bracket, one of the first light emitting tube and the first light receiving tube is located in the cavity, and the other is located in the exposed portion, and one of the second light emitting tube and the second light receiving tube is located in the cavity, and the other is located in the exposed portion.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the first light receiving tube and the second light receiving tube are located in the cavity.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, a first groove and a second groove are provided on the side of the shielding portion facing the antenna circuit board, the inner wall of the first groove and the antenna circuit board are combined to form the first light-transmitting channel, and the inner wall of the second groove and the antenna circuit board are combined to form the second light-transmitting channel.

[0014] 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.

[0015] 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.

[0016] According to an embodiment of the present application, the rotating radar comprises a first light-transmitting channel and a second light-transmitting channel. The rotating radar includes a first grating sensor and a second grating sensor mounted on the antenna assembly. The first grating sensor comprises a first light-emitting tube and a first light-receiving tube, while the second grating sensor comprises a second light-emitting tube and a second light-receiving tube. The first and second grating sensors each perform their respective functions, enabling the rotating radar to locate and sense the rotation angle of the antenna assembly. The first and second light-emitting tubes are positioned outside opposite ends of the first light-transmitting channel, while the second and second light-receiving tubes are positioned outside opposite ends of the second light-transmitting channel. Therefore, the first grating sensor transmits light through the first light-transmitting channel, while the second grating sensor transmits light through the second light-transmitting channel. The separate first and second light-transmitting channels reduce light interference between the first and second grating sensors. Placing the first and second grating sensors in close proximity also reduces the risk of false triggering and false sensing, improves the reliability of the antenna assembly's rotation angle positioning and sensing, and ensures compact installation of the sensor components within the rotating radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the rotating radar of the present application;

[0019] Figure 2 This is a three-dimensional exploded schematic diagram of an embodiment of the rotating radar of the present application;

[0020] Figure 3 This is a bottom-up schematic diagram of the antenna assembly and grating code disk in one embodiment of the rotating radar of the present application;

[0021] Figure 4 This is a cross-sectional schematic diagram of an antenna assembly in one embodiment of the rotating radar of the present application;

[0022] Figure 5 This is a schematic exploded perspective view of an antenna assembly in an embodiment of the rotating radar of the present application;

[0023] Figure 6 for Figure 5 A partial enlarged schematic diagram of area B in the middle.

[0024] Description of reference numerals:

[0025] 100-rotating radar;

[0026] 110 - Rotational driving member;

[0027] 120 - antenna assembly; T1 - first light-transmitting channel; T2 - second light-transmitting channel; 121 - antenna bracket; P1 - shielding portion; P11 - first groove; P12 - second groove; C1 - cavity; 122 - antenna circuit board; 1221 - exposed portion;

[0028] 130 - first grating sensor; 131 - first light emitting tube; 132 - first light receiving tube;

[0029] 140 - second grating sensor; 141 - second light emitting tube; 142 - second light receiving tube;

[0030] 150 - grating code disk; 151 - first opening; 152 - grating structure;

[0031] 160-base.

[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 of an embodiment of a rotating radar according to the present application. The rotating radar 100 includes a rotational driver 110, an antenna assembly 120, a first grating sensor 130, and a second grating sensor 140. The antenna assembly 120 is connected to the rotational driver 110, which is used to drive the antenna assembly 120 in rotation.

[0037] Figure 3 、 Figure 4 They are respectively a bottom view schematic diagram and a cross-sectional schematic diagram of the antenna assembly and the grating code disk in one embodiment of the rotating radar of the present application, wherein Figure 3 The AA line shows Figure 4 The antenna assembly 120 is provided with a first light-transmitting channel T1 and a second light-transmitting channel T2. The first grating sensor 130 and the second light-transmitting sensor 140 are mounted on the antenna assembly 120. The first grating sensor 130 includes a first light-emitting tube 131 and a first light-receiving tube 132. The first light ray emitted by the first light-emitting tube 131 passes through the grating code disk 150 and is directed toward the first light-receiving tube 132. The second grating sensor 140 includes a second light-emitting tube 141 and a second light-receiving tube 142. The second light ray emitted by the second light-emitting tube 141 passes through the grating code disk 150 and is directed toward the second light-receiving tube 142. The first light-emitting tube 131 and the first light-receiving tube 132 are respectively disposed on opposite ends of the first light-transmitting channel T1. The second light-emitting tube 141 and the second light-receiving tube 142 are respectively disposed on opposite ends of the second light-transmitting channel T2.

[0038] According to the rotating radar 100 of the embodiment of the present application, the antenna assembly 120 is provided with a first light-transmitting channel T1 and a second light-transmitting channel T2. The rotating radar 100 includes a first grating sensor 130 and a second grating sensor 140 mounted on the antenna assembly 120. The first grating sensor 130 includes a first light-emitting tube 131 and a first light-receiving tube 132, and the second grating sensor 140 includes a second light-emitting tube 141 and a second light-receiving tube 142. The first grating sensor 130 and the second grating sensor 140 respectively play their respective roles, and are used to enable the rotating radar 100 to locate and sense the rotation angle of the antenna assembly 120. The first light-emitting tube 131 and the first light-receiving tube 132 are respectively arranged on the outside of the opposite ends of the first light-transmitting channel T1, and the second light-emitting tube 141 and the second light-receiving tube 142 are respectively arranged on the outside of the opposite ends of the second light-transmitting channel T2. Therefore, the first grating sensor 130 transmits light through the first light-transmitting channel T1, and the second grating sensor 140 transmits light through the second light-transmitting channel T2. The separate first light-transmitting channel T1 and the second light-transmitting channel T2 can reduce the interference of light between the first grating sensor 130 and the second grating sensor 140, so that the first grating sensor 130 and the second grating sensor 140 are arranged adjacent to each other at a close distance, which can also reduce the risk of false triggering and false sensing, improve the reliability of the rotation angle positioning and perception of the antenna assembly 120, and ensure the compactness of the installation of the sensor components in the rotating radar 100.

[0039] In some embodiments, the rotating radar 100 further includes a base 160 , and the rotation driving member 110 is mounted on the base 160 . The grating code disk 150 can be mounted on the base 160 .

[0040] In some embodiments, 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. The combination of angle detection and zero-point detection allows accurate positioning of the rotation angle of the antenna assembly 120. Zero-point detection allows the antenna assembly 120 to reset itself with each rotation, reducing cumulative errors.

[0041] like Figure 3 In some embodiments, the grating code disk 150 is provided with a first opening 151 and a ring-shaped grating structure 152. The grating structure 152 includes a plurality of ring-shaped through holes, and the sizes of the plurality of through holes and the intervals between adjacent through holes are the same.

[0042] 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 120 rotates, the through holes of the grating structure 152 and the blocking areas between the through holes 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.

[0043] When antenna assembly 120 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 antenna assembly 120 rotates to a position other than the initial preset position, grating code disk 150 blocks the second light beam. Each time antenna assembly 120 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 rotation angle of antenna assembly 120.

[0044] like Figure 4 In some embodiments, the first light-transmitting channel T1 and the second light-transmitting channel T2 are arranged side by side and parallel to each other. On the one hand, the side-by-side arrangement of the first light-transmitting channel T1 and the second light-transmitting channel T2 allows for a more compact arrangement of the first grating sensor 130 and the second grating sensor 140. On the other hand, the parallel arrangement of the first light-transmitting channel T1 and the second light-transmitting channel T2 can further reduce interference between the first light-transmitting channel T1 and the second light-transmitting channel T2, further improving the reliability of the rotation angle positioning and sensing of the antenna assembly 120.

[0045] 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 further reduces interference between the first and second photoelectric sensors 130 and 140.

[0046] Figure 5This is a three-dimensional exploded schematic diagram of the antenna assembly in one embodiment of the rotating radar of the present application. Figure 6 for Figure 5 A partial enlarged schematic diagram of area B in the middle.

[0047] In some embodiments, the antenna assembly 120 includes a shielding portion P1 disposed between the first light emitting tube 131 and the first light receiving tube 132, and between the second light emitting tube 141 and the second light receiving tube 142. The first light transmitting channel T1 and the second light transmitting channel T2 are disposed in the shielding portion P1.

[0048] The shielding portion P1 is a light-shielding structure, so that when the rotating radar 100 is in operation, the first light emitted by the first light emitting tube 131 will be blocked by the shielding portion P1 and can only pass through the first light-transmitting channel T1, and the second light emitted by the second light emitting tube 141 will be blocked by the shielding portion P1 and can only pass through the second light-transmitting channel T2, thereby reducing interference when the first light receiving tube 132 and the second light receiving tube 142 receive light respectively.

[0049] In some embodiments, the antenna assembly 120 includes an antenna support 121 and an antenna circuit board 122. The antenna support 121 is connected to the rotational drive member 110, and the antenna circuit board 122 is mounted on the antenna support 121. The antenna circuit board 122 is arranged with an antenna array. A shielding portion P1 is located on the antenna support 121, and a first light-transmitting channel T1 and a second light-transmitting channel T2 are formed by the antenna circuit board 122 and the shielding portion P1.

[0050] In the above embodiment, the antenna circuit board 122 and the shielding portion P1 are enclosed to form a first light-transmitting channel T1 and a second light-transmitting channel T2, so that one side of the first light-transmitting channel T1 and the second light-transmitting channel T2 are close to the surface of the antenna circuit board 122. On the one hand, the compactness of the structure of the antenna assembly 120 is ensured, and on the other hand, the surface of the antenna circuit board 122 can be used as a reference plane to facilitate the alignment of the first grating sensor 130, the second grating sensor 140 and the first light-transmitting channel T1 and the second light-transmitting channel T2.

[0051] In some embodiments, a cavity C1 is defined on a surface of the antenna support 121 facing the antenna circuit board 122 , and the antenna circuit board 122 includes an exposed portion 1221 extending outwardly relative to the antenna support 121 .

[0052] One of the first light emitting tube 131 and the first light receiving tube 132 is located in the cavity C1 , and the other is located in the exposed portion 1221 .

[0053] One of the second light emitting tube 141 and the second light receiving tube 142 is located in the cavity C1 , and the other is located in the exposed portion 1221 .

[0054] In the above embodiment, one of the first light emitting tube 131 and the first light receiving tube 132 is located in the cavity C1, and one of the second light emitting tube 141 and the second light receiving tube 142 is located in the cavity C1, so that at least a portion of the first grating sensor 130 and at least a portion of the second grating sensor 140 are located in the cavity C1 and are protected by the antenna bracket 121 and the antenna circuit board 122.

[0055] In the above embodiment, the first light receiving tube 132 and the second light receiving tube 142 are located in the cavity C1. The first light emitting tube 131 and the second light emitting tube 141 are located in the exposed portion 1221. Because the first light receiving tube 132 and the second light receiving tube 142 are located in the relatively dark cavity C1, the effect of ambient light on the light sensing of the first light receiving tube 132 and the second light receiving tube 142 is reduced, thereby improving the accuracy of light sensing by the first light receiving tube 132 and the second light receiving tube 142.

[0056] In the above embodiment, a first groove P11 and a second groove P12 are provided on the side of the shielding portion P1 facing the antenna circuit board 122. The inner wall of the first groove P11 and the antenna circuit board 122 are combined to form a first light-transmitting channel T1, and the inner wall of the second groove P12 and the antenna circuit board 122 are combined to form a second light-transmitting channel T2.

[0057] In the above embodiment, the first groove P11 and the second groove P12 of the shielding portion P1 and the antenna circuit board 122 enclose the first light-transmitting channel T1 and the second light-transmitting channel T2, wherein the first groove P11 and the second groove P12 are easy to form in the shielding portion P1, thereby reducing the process difficulty of forming the first light-transmitting channel T1 and the second light-transmitting channel T2 in the rotating radar 100, and facilitating reducing the manufacturing cost of the rotating radar 100.

[0058] 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 intermediate components for installation, further improving the compactness of the structure.

[0059] 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 .

[0060] An embodiment of the present application also provides an unmanned aerial vehicle (UAV) comprising an airframe and a rotating radar 100 according to any of the aforementioned embodiments, the rotating radar 100 being mounted on the airframe. The rotating radar 100 comprises a rotational drive 110, an antenna assembly 120, a first grating sensor 130, and a second grating sensor 140. The antenna assembly 120 is connected to the rotational drive 110, which is used to drive the antenna assembly 120 in rotation. The antenna assembly 120 is provided with a first light-transmitting channel T1 and a second light-transmitting channel T2. The first grating sensor 130 and the second grating sensor 140 are mounted on the antenna assembly 120. The first grating sensor 130 comprises a first light-emitting diode 131 and a first light-receiving diode 132. The first light beam emitted by the first light-emitting diode 131 passes through a grating code disk 150 and is directed toward the first light-receiving diode 132. The second grating sensor 140 comprises a second light-emitting diode 141 and a second light-receiving diode 142. The second light beam emitted by the second light-emitting diode 141 passes through the grating code disk 150 and is directed toward the second light-receiving diode 142. The first light emitting tube 131 and the first light receiving tube 132 are respectively disposed outside the opposite ends of the first light-transmitting channel T1. The second light emitting tube 141 and the second light receiving tube 142 are respectively disposed outside the opposite ends of the second light-transmitting channel T2.

[0061] According to an embodiment of the present application, a drone includes a rotating radar 100, wherein the antenna assembly 120 of the rotating radar 100 is provided with a first light-transmitting channel T1 and a second light-transmitting channel T2. The rotating radar 100 includes a first grating sensor 130 and a second grating sensor 140 mounted on the antenna assembly 120. The first grating sensor 130 includes a first light-emitting tube 131 and a first light-receiving tube 132, and the second grating sensor 140 includes a second light-emitting tube 141 and a second light-receiving tube 142. The first grating sensor 130 and the second grating sensor 140 each perform their respective functions to enable the rotating radar 100 to locate and sense the rotation angle of the antenna assembly 120. The first light-emitting tube 131 and the first light-receiving tube 132 are respectively disposed on opposite ends of the first light-transmitting channel T1, and the second light-emitting tube 141 and the second light-receiving tube 142 are respectively disposed on opposite ends of the second light-transmitting channel T2. Therefore, the first grating sensor 130 transmits light through the first light-transmitting channel T1, and the second grating sensor 140 transmits light through the second light-transmitting channel T2. The separate first light-transmitting channel T1 and the second light-transmitting channel T2 can reduce the interference of light between the first grating sensor 130 and the second grating sensor 140, so that the first grating sensor 130 and the second grating sensor 140 are arranged adjacent to each other at a close distance, which can also reduce the risk of false triggering and false sensing, improve the reliability of the rotation angle positioning and perception of the antenna assembly 120, and ensure the compactness of the installation of the sensor components 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, and the antenna assembly is provided with a first light-transmitting channel and a second light-transmitting channel; A first grating sensor and a second grating sensor are installed on the antenna assembly. The first grating sensor includes a first light emitting tube and a first light receiving tube. The first light emitted by the first light emitting tube passes through the grating code disk and shines toward the first light receiving tube. The second grating sensor includes a second light emitting tube and a second light receiving tube. The second light emitted by the second light emitting tube passes through the grating code disk and shines toward the second light receiving tube. The first light emitting tube and the first light receiving tube are respectively arranged on the outside of the opposite ends of the first light-transmitting channel, and the second light emitting tube and the second light receiving tube are respectively arranged on the outside of the opposite ends of the second light-transmitting channel.

2. The rotating radar according to claim 1, characterized in that The first grating sensor cooperates with the grating code disk for angle detection; the second grating sensor cooperates with the grating code disk for zero point detection.

3. The rotating radar according to claim 2, characterized in that The grating code disk is provided with a first opening and a ring-shaped grating structure. The first light emitted by the first light emitting tube passes through the grating structure and is directed to the first light receiving tube for angle detection. When the antenna assembly 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 for zero point detection.

4. The rotating radar according to claim 1, wherein The first light-transmitting channel and the second light-transmitting channel are arranged side by side and parallel to each other.

5. The rotating radar according to claim 1, wherein: The antenna assembly includes a shielding portion, which is arranged between the first light emitting tube and the first light receiving tube, and between the second light emitting tube and the second light receiving tube. The first light-transmitting channel and the second light-transmitting channel are arranged in the shielding portion.

6. The rotating radar according to claim 5, characterized in that The antenna assembly includes an antenna bracket and an antenna circuit board. The antenna bracket is connected to the rotating drive component. The antenna circuit board is installed on the antenna bracket. The shielding portion is located on the antenna bracket. The first light-transmitting channel and the second light-transmitting channel are formed by the antenna circuit board and the shielding portion.

7. The rotating radar according to claim 6, characterized in that A cavity is provided on a surface of one side of the antenna bracket facing the antenna circuit board, and the antenna circuit board includes an exposed portion extending outward relative to the antenna bracket. One of the first light emitting tube and the first light receiving tube is located in the cavity, and the other is located in the exposed portion. One of the second light emitting tube and the second light receiving tube is located in the cavity, and the other is located in the exposed portion.

8. The rotating radar according to claim 7, characterized in that The first light receiving tube and the second light receiving tube are located in the cavity.

9. The rotating radar according to claim 6, characterized in that The shielding portion is provided with a first groove and a second groove on the side facing the antenna circuit board. The inner wall of the first groove and the antenna circuit board form the first light-transmitting channel, and the inner wall of the second groove and the antenna circuit board form the second light-transmitting channel.

10. The rotating radar according to claim 6, 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.

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

Images