WO2021212633A1 - Unmanned aerial vehicle undercarriage, and unmanned aerial vehicle - Google Patents

Abstract

An unmanned aerial vehicle undercarriage, and an unmanned aerial vehicle. The unmanned aerial vehicle undercarriage comprises an undercarriage body and a reader antenna; the reader antenna is arranged in the undercarriage body; the undercarriage body is provided with an opening allowing a feeder line to pass through. According to the unmanned aerial vehicle undercarriage, the technical problems that time and labor are wasted, the appearance is not attractive, and the reader antenna is prone to damage resulting from the reader antenna needing to be suspended on site before inspection of the unmanned aerial vehicle can be solved.

Description

UAV landing gear and UAV

Cross-references to related applications

This application is based on a Chinese patent application with an application number of 202010324497.8 and an application date of April 23, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application by reference.

Technical field

This application relates to the technical field of drone inspections, in particular to an unmanned aerial vehicle landing gear and an unmanned aerial vehicle.

Background technique

With the development of RFID (Radio Frequency Identification) technology and the increasing requirements of various industries for efficient and convenient work, RFID has been more and more used. Nowadays, various industries generally use RFID technology to inventory items To improve work efficiency. However, in industries such as electric power and large-scale warehousing, due to the wide distribution of assets and the more complex distribution environment, if the conventional manual RFID operation method is still used for inventory, it will not only be time-consuming and laborious, but also pose security risks.

In order to solve the above problems, currently in the power industry, drone inspection technology is used-electronic tags are attached to each object to be inspected, the drone carries a reader, and the reader antenna uses a pan/tilt The hanging method is hoisted under the drone. When the drone is above the object to be inspected, the corresponding electronic tag information can be read, so as to efficiently perform high-efficiency on assets or items with a large number, a wide distribution, or a complex distribution environment. Inspection.

However, due to the large size of the reader/writer antenna, it needs to be installed on site before the inspection, and the installation process is complicated, which undoubtedly consumes a certain amount of manpower and material resources. In addition, the reader/writer antenna exposed to the outside is not only unsightly, but also easily damaged by collision with foreign objects.

Summary of the invention

In view of this, the purpose of this application is to propose a drone landing gear and a drone to solve the time-consuming, laborious, unsightly, and easy-to-damage problems caused by the need to hoist the reader/writer antenna on site before the drone inspection. Technical issues.

In order to achieve the above-mentioned purpose, the technical solution of this application is realized as follows:

An unmanned aerial vehicle landing gear includes: a landing gear body and a reader-writer antenna; the reader-writer antenna is arranged in the landing gear body; the landing gear body is provided with an opening through which a feeder can pass.

Further, the landing gear body includes: a left frame, a right frame, and a crossbar; the left frame includes a left longitudinal rod; the right frame includes a right longitudinal rod; the crossbar connects the left longitudinal rod with The right vertical rod; the reader antenna includes: two pairs of dipole antennas; a pair of dipole antennas are arranged in the left vertical rod, and the other pair of dipole antennas are arranged in the right vertical rod; two pairs of dipole antennas The sub-antennas are connected by two conductors, and the conductors are arranged in the cross bar; the distance between the left vertical bar and the right vertical bar is not greater than 1/the wavelength of the antenna composed of the two pairs of dipole antennas 2.

Preferably, the distance between the left vertical rod and the right vertical rod is equal to 1/2 of the antenna wavelength formed by the two pairs of dipole antennas.

Further, the landing gear body includes: a left frame body and a right frame body; the left frame body includes a first left longitudinal rod and a second left longitudinal rod; the right frame body includes a first right longitudinal rod and a second left longitudinal rod. Right vertical rod; the second left vertical rod and the second right vertical rod are connected by a first cross rod; the reader antenna includes: a first dipole antenna and a second dipole antenna; The first dipole antenna is arranged in the second left vertical rod, the second dipole antenna is arranged in the second right vertical rod; the first dipole antenna and the second dipole antenna pass through two The first conductor is connected, and the first conductor is arranged in the first crossbar; the distance between the second left vertical rod and the second right vertical rod is not greater than the first dipole antenna and the Said second dipole antenna is composed of 1/2 of the antenna wavelength.

Preferably, the distance between the second left vertical rod and the second right vertical rod is equal to 1/2 of the antenna wavelength formed by the first dipole antenna and the second dipole antenna.

Preferably, the reader/writer antenna is provided in the landing gear body by injection molding.

Preferably, the opening is provided at a position on the landing gear body opposite to the feed port of the reader/writer antenna.

Further, the feed port of the reader/writer antenna is welded with an open wire or a feeder connector, and the feeder is connected to the feed port of the reader/writer antenna through the open wire or the feeder connector.

The landing gear of the UAV provided in this application has the reader antenna directly arranged in the landing gear body, and the landing gear body is provided with an opening for the feeder to pass through. Therefore, before the UAV performs RFID inspection, Only need to connect the reader antenna to the reader port through the feeder, without the need to carry out complicated antenna installation operations, which can greatly simplify the work process and improve the work efficiency. At the same time, the reader/writer antenna is hidden in the landing gear body, so that the reader/writer antenna and the landing gear body are integrated, which can effectively solve the technical problem of unsightly and easy damage caused by the existing antenna being exposed to the outside.

Another purpose of this application is to propose an unmanned aerial vehicle, which can solve the technical problems of time-consuming, laborious, unsightly, and easy to damage caused by the need to hoist the reader/writer antenna on site before the drone inspection.

In order to achieve the above-mentioned purpose, the technical solution of this application is realized as follows:

An unmanned aerial vehicle includes: an unmanned aerial vehicle body and any one of the above-mentioned unmanned aerial vehicle landing gear; the unmanned aerial vehicle body and the unmanned aerial vehicle landing gear are detachably connected.

Further, the drone further includes: a metal plate or a metal mesh; the metal plate or the metal mesh is arranged between the drone body and the reader/writer antenna.

The advantages of the UAV and the above-mentioned UAV landing gear are the same as those of the prior art, which will not be repeated here.

Other features and advantages of the present application will be described in detail in the following specific embodiments.

Description of the drawings

The drawings constituting a part of the application are used to provide a further understanding of the application, and the exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

FIG. 1 is a schematic structural diagram of Embodiment 1 of the landing gear of an unmanned aerial vehicle described in this application;

FIG. 2 is a schematic structural diagram of Embodiment 2 of the landing gear of an unmanned aerial vehicle described in this application;

FIG. 3 is a schematic structural diagram of Embodiment 1 of the unmanned aerial vehicle described in this application;

4 is a schematic structural diagram of Embodiment 2 of the drone described in this application;

5 is a plane radiation pattern diagram when the distance between two pairs of dipole antennas is half a wavelength in an embodiment of the application;

Fig. 6 is a plane radiation pattern after adding a metal plate or metal mesh between the drone body and the reader/writer antenna on the basis of Fig. 5.

Description of Reference Signs

11-left frame 12-right frame 13-crossbar 14-first crossbar

15-Second Cross Bar 16-Third Cross Bar 110-Left Vertical Bar 120-Right Vertical Bar

21, 22- A pair of dipole antennas arranged in the left vertical rod 110

23, 24-A pair of dipole antennas installed in the right vertical rod 120

25, 26- Two conductors arranged in the crossbar 13

111-The first left vertical bar 112-The second left vertical bar

121-The first right vertical bar 122-The second right vertical bar

31, 32-the first dipole antenna 33, 34-the second dipole antenna

35, 36-the first conductor

Detailed ways

The specific implementation manners of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementations described here are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application.

The drone landing gear and the drone provided by the embodiments of the application are shown in Figures 1 to 4, and include: a landing gear body and a reader-writer antenna, wherein the reader-writer antenna is arranged in the landing gear body, and the landing gear The landing gear body is provided with an opening for the feeder to pass through. The feeder is used to connect the reader antenna to the reader. Specifically, one end of the feeder is connected to the feed port of the reader antenna, and the other end of the feeder is connected to the input/output port of the reader to receive the antenna. The signal is transmitted to the reader or the output data of the reader is transmitted to the antenna for transmission.

FIG. 1 is a schematic structural diagram of Embodiment 1 of the drone landing gear described in this application, and FIG. 3 is a schematic structural diagram of Embodiment 1 of the drone described in this application. In this embodiment, the landing gear body includes: a left frame body 11, a right frame body 12, and a cross bar 13. Among them, the left frame body 11 includes a left vertical rod 110 and a left inclined rod, and the right frame body 12 includes a right vertical rod 120 and a right inclined rod. Both the left inclined rod and the right inclined rod are inclined outward from top to bottom, and the left frame body 11 and the right frame 12 are symmetrical about the central axis of the drone. The horizontal rod 13 connects the left vertical rod 110 and the right vertical rod 120. Preferably, the left vertical rod 110 and the right vertical rod 120 are parallel to each other, and the horizontal rod 13 is perpendicular to the left vertical rod 110 and the right vertical rod 120. The cross bar 13 divides the left vertical bar 110 into a front left vertical bar and a rear left vertical bar, and divides the right vertical bar 120 into a front right vertical bar and a rear right vertical bar.

Under the premise that the landing gear body has the above structure, the reader-writer antenna includes two pairs of dipole antennas integrated with the landing gear body. One pair of dipole antennas 21 and 22 are arranged in the left vertical rod 110 of the left frame 11, and the other pair of dipole antennas 23 and 24 are arranged in the right vertical rod 120 of the right frame 12. The two pairs of dipole antennas are connected by two conductors 25, 26, and the two conductors 25, 26 are arranged in the cross bar 13. Specifically, the antenna 21 is installed in the front left vertical pole, the antenna 22 is installed in the rear left vertical pole, the antenna 23 is installed in the front right vertical pole, and the antenna 24 is installed in the rear right vertical pole. The antennas 21, 22, 23, and 24 have the same length, and the antennas 21, 22 form a pair of dipole antennas, and the antennas 23, 24 form another pair of dipole antennas. One end of the antenna 21 and one end of the antenna 23 are connected by a wire 25, and one end of the antenna 22 and one end of the antenna 24 are connected by a wire 26, and the wires 25 and 26 are parallel to each other in the cross bar 13. In order to meet the working performance of the antenna, the distance between the left vertical rod 110 and the right vertical rod 120 is not greater than 1/2 of the antenna wavelength composed of the two pairs of dipole antennas 21, 22 and 23, 24, that is, the two pairs are The distance between the pole antennas 21, 22 and 23, 24 is not more than 1/2 of the wavelength of the antenna composed of the two pairs of dipole antennas 21, 22 and 23, 24. The distance between the two pairs of dipole antennas 21, 22 and 23, 24 is the length of the wire 25 or the wire 26.

In this embodiment, when the current directions of the two pairs of dipole antennas 21, 22 and 23, 24 are the same, the side-fire characteristic is formed, as shown in FIG. 5, and the two pairs of dipole antennas 21, 22 and 23, 24 When the distance between the two pairs of dipole antennas 21, 22 and 23, 24 is equal to 1/2 of the antenna wavelength, the gain of the antenna reaches the maximum and the antenna radiates to the ground.

Based on the structure of the drone landing gear of the above-mentioned embodiment 1, when it is applied to the drone and connected to the drone body for inspection, the reader/writer antenna located in the landing gear body can easily read The electronic tag information under the drone and pasted on the object to be inspected. In this embodiment, the drone body and the drone landing gear are detachably connected.

FIG. 2 is a schematic structural diagram of the second embodiment of the drone landing gear described in this application, and FIG. 4 is a schematic structural diagram of the second embodiment of the drone landing gear described in this application. In this embodiment, the landing gear body includes a left frame body 11 and a right frame body 12, and the left frame body 11 and the right frame body 12 are symmetrical about the central axis of the drone. The left frame 11 includes a first left vertical rod 111 and a second left vertical rod 112. The first left vertical rod 111 is connected to the drone body through a first left inclined rod, and the second left vertical rod 112 passes through a second left vertical rod. The oblique rod is connected with the first left oblique rod. The right frame 12 includes a first right vertical rod 121 and a second right vertical rod 122. The first right vertical rod 121 is connected to the drone body through a first right inclined rod, and the second right vertical rod 122 is connected through a second right inclined rod. It is connected with the first right diagonal rod, and the second left vertical rod 112 and the second right vertical rod 122 are connected by the first crossbar 14. The first left oblique rod and the first right oblique rod both incline from top to bottom outwards, and the second left oblique rod and the second right oblique rod both incline from top to bottom inward. That is, on the basis of the landing gear body described in the first embodiment, two longitudinal rods are added in the inner direction of the landing gear body. The reason for this setting is that when the drone is large, the first left vertical rod 111 and the first right vertical rod 121 need to be set far apart so that the drone can land smoothly, the first left vertical rod The distance between 111 and the first right vertical rod 121 cannot meet the spacing requirements of the two pairs of dipole antennas. At this time, two additional vertical rods need to be added to make the distance between the two newly added vertical rods meet the requirements of the two pairs of dipole antennas. The antenna spacing requirement is 1/2 of the antenna wavelength composed of two pairs of dipole antennas. Preferably, the first left vertical rod 111, the second left vertical rod 112, the first right vertical rod 121 and the second right vertical rod 122 are parallel to each other, and the first horizontal rod 14 is perpendicular to the second left vertical rod 112 and The second right vertical rod 122. As in the first embodiment, the first crossbar 14 equally divides the second left vertical rod 112 into a front second left vertical rod and a rear second left vertical rod, and divides the second right vertical rod 122 into a front second right vertical rod. Longitudinal rod and rear second right vertical rod.

On the premise that the landing gear body has the above structure, the reader antenna includes: a first dipole antenna 31, 32 and a second dipole antenna 33, 34. Among them, the first dipole antennas 31 and 32 are arranged in the second left vertical rod 112, and the second dipole antennas 33 and 34 are arranged in the second right vertical rod 122. The first dipole antenna 31, 32 and the second dipole antenna 33, 34 are connected by two first conductors 35, 36, and the first conductors 35, 36 are arranged in the first cross bar 14. Specifically, the antenna 31 is installed in the front second left vertical pole, the antenna 32 is installed in the rear second left vertical pole, the antenna 33 is installed in the front second right vertical pole, and the antenna 34 is installed in the rear second vertical pole. In the right vertical bar. The antennas 31, 32, 33, and 34 have the same length, and the antennas 31, 32 form a first dipole antenna, and the antennas 33, 34 form a second dipole antenna. One end of the antenna 31 and one end of the antenna 33 are connected by a wire 35, and one end of the antenna 32 and one end of the antenna 34 are connected by a wire 36, and the wires 35 and 36 are parallel to each other in the cross bar 14. In order to satisfy the working performance of the antenna, the distance between the second left vertical rod 112 and the second right vertical rod 122 shall not be greater than the antenna wavelength composed of the first dipole antenna 31, 32 and the second dipole antenna 33, 34 That is, the distance between the first dipole antenna 31, 32 and the second dipole antenna 33, 34 is not greater than the first dipole antenna 31, 32 and the second dipole antenna 33, The antenna composed of 34 is 1/2 of the wavelength. The distance between the first and second dipole antennas is the length of the wire 35 or the wire 36.

In order to maximize the gain of the antenna and obtain the best antenna performance, preferably, the distance between the second left vertical rod 112 and the second right vertical rod 122 is equal to the first dipole antenna 31, 32 and the second dipole antenna. The sub-antennas 33 and 34 are composed of 1/2 of the wavelength of the antenna.

It should be noted that the above-mentioned first left vertical rod 111 and the first right vertical rod 121 are located at the same height to stably support the drone body; the second left vertical rod 112 and the second right vertical rod 122 are located at the same height to The antenna installed therein has better performance. However, the second left vertical rod 112 and the second right vertical rod 122 may not be at the same height as the first left vertical rod 111 and the first right vertical rod 121, and the second left vertical rod 112 and the second right vertical rod 122 may be higher than The first left vertical rod 111 and the first right vertical rod 121. Preferably, the first left vertical rod 111, the second left vertical rod 112, the first right vertical rod 121, and the second right vertical rod 122 are located at the same height, that is, on the same plane.

Further, multiple sets of antennas can be provided in the above-mentioned landing gear body. The multiple sets of antennas are respectively connected to different reader/writer ports through corresponding feeders, and the reader/writer ports are obtained by polling under the control of the control circuit. Data transmitted by multiple antennas. Specifically, the reader/writer antenna in this embodiment further includes a third dipole antenna arranged in the first left vertical rod 111. The first left vertical rod 111 and the second left vertical rod 112 are also connected by a second horizontal rod 15. The second horizontal rod 15 divides the first left vertical rod 111 into equal parts, and the second horizontal rod 15 is perpendicular to the first left vertical rod. The vertical rod 111 and the two antennas of the third dipole antenna are respectively arranged in the first left vertical rod after being equally divided. Preferably, the second crossbar 15 and the first crossbar 14 are located on the same straight line. The third dipole antenna and the first dipole antennas 31, 32 are connected by two second conductors, and the second conductors are arranged in parallel in the second crossbar 15 (not shown in the above characteristic drawings). In order to satisfy the working performance of the antenna, the distance between the first left vertical rod 111 and the second left vertical rod 112 is not greater than 1/the wavelength of the antenna composed of the third dipole antenna and the first dipole antenna 31, 32 2. Preferably, the distance between the first left vertical rod 111 and the second left vertical rod 112 is equal to 1/2 of the antenna wavelength formed by the third dipole antenna and the first dipole antennas 31, 32. That is, the distance between the third dipole antenna and the first dipole antenna 31, 32 is equal to 1/2 of the wavelength of the antenna formed by the third dipole antenna and the first dipole antenna 31, 32.

On the basis of the above two groups of antennas, a third group of antennas can be further provided in this embodiment. Specifically, the reader/writer antenna further includes a fourth dipole antenna arranged in the first right vertical rod 121. The first right vertical bar 121 and the second right vertical bar 122 are also connected by a third cross bar 16. The third cross bar 16 equally divides the first right vertical bar 121, and the third cross bar 16 is perpendicular to the first right vertical bar. The vertical rod 121 and the two antennas of the fourth dipole antenna are respectively arranged in the first right vertical rod 121 after being equally divided. Preferably, the third crossbar 16 is located on the same straight line as the first crossbar 14 and the second crossbar 15. The fourth dipole antenna and the second dipole antennas 33 and 34 are connected by two third conductors, and the third conductors are arranged in the third crossbar 16 in parallel. In order to satisfy the working performance of the antenna, the distance between the first right vertical rod 121 and the second right vertical rod 122 shall not be greater than 1/the wavelength of the antenna composed of the fourth dipole antenna and the second dipole antenna 33, 34. 2. Preferably, the distance between the first right vertical rod 121 and the second right vertical rod 122 is equal to 1/2 of the antenna wavelength formed by the fourth dipole antenna and the second dipole antenna 33, 34. That is, the distance between the fourth dipole antenna and the second dipole antenna 33, 34 is equal to 1/2 of the wavelength of the antenna composed of the fourth dipole antenna and the second dipole antenna 33, 34.

In this embodiment, a pair of dipole antennas in the first left vertical rod 111 and a pair of dipole antennas in the second right vertical rod 122 can also be combined to form a set of reader-writer antennas according to actual needs, or The pair of dipole antennas in the two left vertical rods 112 and the pair of dipole antennas in the first right vertical rod 121 form a set of reader-writer antennas. The specific composition method is the same as the above method, and will not be repeated here.

Based on the structure of the drone landing gear in the second embodiment above, when it is applied to a larger drone and connected to the larger drone body for inspection, the reader/writer antenna located in the landing gear body It can easily read the information of the electronic tag located under the drone and pasted on the object to be inspected, and can realize the simultaneous operation of multiple groups of antennas. The reader port can poll the information of each group of antennas. In this embodiment, the drone body and the drone landing gear are detachably connected.

Regarding the first and second embodiments above, the reader/writer antennas can be set in the landing gear body by injection molding. In addition, the landing gear body can also be composed of hollow pipes. In this way, the reader/writer antenna can also be directly fixed and placed in the hollow pipe. The above method enables the reader-writer antenna to be integrated with the landing gear body, and the landing gear with the reader-writer antenna can be obtained at the factory. The material of the landing gear body can be made of ductile plastic.

For the convenience of wiring, the opening provided on the landing gear body for the feeder line to pass through is arranged on the landing gear body at a position opposite to the feed port of the reader antenna. Further, an open wire or feeder connector is welded at the feed port of the reader antenna, and the feeder is connected to the feed port of the reader antenna through the open wire or feeder connector. For the first embodiment above, the feed ports of the reader antenna are located in the middle of the wires 25 and 26, and both feed ports are connected to one end of the feeder, and the other end of the feeder is connected to the reader port. Regarding the second embodiment above, the determination of the position of the feed port of each group of antennas in the multiple groups of antennas and the connection manner to the reader/writer port are similar to those of the first embodiment, and will not be repeated here.

As shown in Figures 3 and 4, this application also provides an unmanned aerial vehicle. Removable connection between the landing gear.

It is necessary to improve the performance of the antenna in certain application scenarios when the drone is inspected. At this time, it can be between the drone body and the drone landing gear (that is, between the drone body and the reader antenna ) Add a metal plate or metal mesh as a signal reflection device to increase the gain of the antenna. The metal plate or metal mesh is preferably parallel to the plane where the reader/writer antenna is located. The plane radiation pattern of the antenna after the reflection device is added is shown in Figure 6.

The landing gear of the drone and the drone provided in this application, because the reader antenna is directly arranged in the landing gear body, and the landing gear body is provided with an opening for the feeder to pass through, so RFID is performed on the drone Before the inspection, it is only necessary to connect the reader antenna to the reader port through the feeder, and no more complicated antenna installation operations are required, which can greatly simplify the work process and improve the work efficiency. At the same time, the reader/writer antenna is hidden in the landing gear body, so that the reader/writer antenna and the landing gear body are integrated, which can effectively solve the technical problem of unsightly and easy damage caused by the existing antenna being exposed to the outside.

The optional implementation manners of the embodiments of the present application are described in detail above with reference to the accompanying drawings. However, the embodiments of the present application are not limited to the specific details in the above-mentioned implementation manners. Various simple modifications are made to the technical solution of, and these simple modifications all fall within the protection scope of the embodiments of the present application.

In addition, it should be noted that the various specific technical features described in the foregoing specific embodiments can be combined in any suitable manner, provided that there is no contradiction. In order to avoid unnecessary repetition, various possible combinations are not described separately in the embodiments of the present application. The foregoing various possible combinations, as long as they do not violate the ideas of the embodiments of the present application, should also be regarded as the contents disclosed in the embodiments of the present application.

Claims (8)

1. An unmanned aerial vehicle landing gear, comprising: a landing gear body and a reader-writer antenna; the reader-writer antenna is arranged in the landing gear body; the landing gear body is provided with an opening through which a feeder can pass; The opening is arranged on the landing gear body at a position opposite to the feed port of the reader antenna; the feed port of the reader antenna is welded with an open line or a feeder connector, and the feeder passes The opening line or the feed line connector is connected to the feed port of the reader/writer antenna.
2. The drone landing gear according to claim 1, wherein the landing gear body comprises: a left frame (11), a right frame (12), a crossbar (13); the left frame (11) It includes a left vertical rod (110); the right frame (12) includes a right vertical rod (120); the cross rod (13) connects the left vertical rod (110) and the right vertical rod (120); the read/write The antenna includes: two pairs of dipole antennas (21, 22; 23, 24); a pair of dipole antennas (21, 22) are arranged in the left vertical rod (110), and the other pair of dipole antennas (23, 24) set in the right vertical rod (120); two pairs of dipole antennas (21, 22; 23, 24) are connected by two conductors (25, 26), and the two conductors (25, 26) Set in the crossbar (13); the distance between the left vertical rod (110) and the right vertical rod (120) is not greater than the two pairs of dipole antennas (21, 22; 23, 24) The antenna is composed of 1/2 of the wavelength.
3. The drone landing gear according to claim 2, wherein the distance between the left longitudinal rod (110) and the right longitudinal rod (120) is equal to the two pairs of dipole antennas (21, 22; 23) , 24) 1/2 of the antenna wavelength.
4. The drone landing gear according to claim 1, wherein the landing gear body comprises: a left frame (11), a right frame (12); the left frame (11) includes a first left longitudinal rod (111) and a second left vertical rod (112); the right frame body (12) includes a first right vertical rod (121) and a second right vertical rod (122); the second left vertical rod (112) It is connected to the second right vertical rod (122) through a first cross rod (14); the reader antenna includes: a first dipole antenna (31, 32) and a second dipole antenna ( 33, 34); the first dipole antenna (31, 32) is arranged in the second left vertical rod (112), and the second dipole antenna (33, 34) is arranged in the first In the two right vertical rods (122); the first dipole antenna (31, 32) and the second dipole antenna (33, 34) are connected by two first conductors (35, 36), and The two first conductors (35, 36) are arranged in the first crossbar (14); the distance between the second left vertical rod (112) and the second right vertical rod (122) It is not greater than 1/2 of the wavelength of the antenna composed of the first dipole antenna (31, 32) and the second dipole antenna (33, 34).
5. The drone landing gear according to claim 4, wherein the distance between the second left longitudinal rod (112) and the second right longitudinal rod (122) is equal to the first dipole antenna ( 31, 32) and the second dipole antenna (33, 34) composed of 1/2 of the antenna wavelength.
6. The drone landing gear according to claim 1, wherein the reader/writer antenna is provided in the landing gear body by injection molding.
7. An unmanned aerial vehicle, comprising: an unmanned aerial vehicle body and an unmanned aerial vehicle landing gear according to any one of claims 1-6; the unmanned aerial vehicle body and the unmanned aerial vehicle Removable connection between the landing gear.
8. The drone according to claim 7, wherein the drone further comprises: a metal plate or a metal mesh; the metal plate or the metal mesh is disposed on the drone body and the reader Between the antennas.

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