RFID-navigation-assisted precision landing device for unmanned aerial vehicle

Abstract

An RFID-navigation-assisted precision landing device for an unmanned aerial vehicle. The RFID-navigation-assisted precision landing device comprises an unmanned aerial vehicle mounting frame (1), wherein a storage battery (2) is provided on the top of the unmanned aerial vehicle mounting frame (1); a plurality of groups of connecting brackets (3) are fixedly connected to the unmanned aerial vehicle mounting frame (1); propeller blades (4) are provided on the connecting brackets (3); an integrated transmitter (5) is mounted in the unmanned aerial vehicle mounting frame (1); the bottom of the unmanned aerial vehicle mounting frame (1) comes into contact with a support platform (6); the support platform (6) is fixedly mounted on a landing platform (7); the landing platform (7) is in contact with the ground; an RFID transmitter is mounted in the landing platform (7); a driving assembly is provided in the landing platform (7); expansion assemblies are fixedly connected to the periphery of the landing platform (7); the driving assembly is configured to control the expansion assemblies to expand; and the expansion assemblies are configured to adjust the landing area of the support platform (6). The device can flexibly adjust the landing area of the support platform (6) on the basis of a landing environment, thereby enhancing the adaptability of the system, and reducing risks during the landing of an unmanned aerial vehicle; and the device is easy to mount and maintain, thereby having good practicability and reliability.

Description

An unmanned aerial vehicle precision landing device based on RFID navigation assistance TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle precision landing device based on RFID navigation assistance. BACKGROUND

[0002] An unmanned aerial vehicle refers to a non-crewed aircraft that is controlled by wireless remote control equipment and self-provided program control devices, or is completely or intermittently operated by a vehicle-mounted computer. Unmanned aerial vehicles can be divided into military and civilian applications. In military applications, unmanned aerial vehicles are divided into reconnaissance aircraft and target aircraft. In civilian applications, unmanned aerial vehicles are applied in aerial photography, agriculture, plant protection, micro-selfie, express delivery, disaster rescue, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting, power line inspection, disaster relief, film shooting, romance creation, etc., greatly expanding the purposes of unmanned aerial vehicles. Developed countries are also actively expanding the application of unmanned aerial vehicles in various industries.

[0003] In the prior art, a Chinese patent document with the patent number CN115649462A proposes an unmanned aerial vehicle precision landing system and method, which includes an unmanned aerial vehicle and a landing platform. The landing platform is arranged on a horizontal motion device and can rotate in the horizontal direction. The horizontal motion device can drive the landing platform to move horizontally. The landing platform and the unmanned aerial vehicle are both provided with communication modules to enable communication between them. The unmanned aerial vehicle precision landing system further includes an infrared identification device, which includes an infrared emitter arranged near the landing platform and an infrared receiver arranged on the unmanned aerial vehicle. Through bidirectional identification of the landing platform and the unmanned aerial vehicle, the landing accuracy of the unmanned aerial vehicle is improved, and the landing safety of the unmanned aerial vehicle is ensured. However, in actual use, the above-mentioned solution cannot achieve air hovering and flight attitude correction without relying on high-definition camera background manual remote control in over-the-horizon self-cruise. Moreover, the existing landing platform cannot change the landing area, so when the landing conditions are poor, the unmanned aerial vehicle cannot achieve precise landing. Therefore, the present application discloses an unmanned aerial vehicle precision landing device based on RFID navigation assistance to improve the stability and safety of unmanned aerial vehicle landing. SUMMARY

[0004] (I) Technical problems solved

[0005] To overcome the shortcomings of the prior art, the present application provides an unmanned aerial vehicle precision landing device based on RFID navigation assistance, which has the advantages of being able to adjust the landing area flexibly according to the landing environment, and solves the problem of not being able to achieve precise landing of the unmanned aerial vehicle when the landing conditions are poor.

[0006] (II) Technical solutions

[0007] To achieve the above object, the present application provides the following technical scheme: A kind of unmanned aerial vehicle precision landing device based on RFID navigation auxiliary, including unmanned aerial vehicle mounting frame, the top of the unmanned aerial vehicle mounting frame is equipped with battery, multiple groups of connecting frames are fixedly connected on the unmanned aerial vehicle mounting frame, spiral fan blade is equipped on the connecting frame, integrated transmitter is installed in the unmanned aerial vehicle mounting frame, the bottom of the unmanned aerial vehicle mounting frame is in contact with support platform, the support platform is fixedly installed on landing platform, the landing platform is in contact with ground, RFID transmitter is installed in the landing platform, drive assembly is equipped in the landing platform;The periphery of the landing platform is fixedly connected with expansion assembly;The drive assembly is used to control the expansion assembly expansion;The expansion assembly is used to adjust the landing area of the support platform.

[0008] Preferably, the drive assembly includes a rotating rod rotatably connected to the bottom of the landing platform, a reciprocating threaded groove is formed in the rotating rod, a drive fan is fixedly connected to the top of the rotating rod, the air inlet of the drive fan is upwardly formed, a rotating disc is threadedly sleeved on the rotating rod, a set of limit plates are fixedly connected to the top and bottom of the rotating rod.

[0009] Preferably, the expansion assembly includes a fixed platform fixedly connected to the landing platform, an extension platform is slidably connected in the fixed platform, a set of first connecting plates are fixedly connected to the bottom of the extension platform, connecting arms are rotatably connected to the inner wall of the first connecting plates, the connecting arms are rotatably connected through a rotating shaft, one end of the connecting arms is fixedly connected to a connecting rod, the connecting rod is rotatably connected to the inner wall of a second connecting plate, and the second connecting plate is fixedly connected to the landing platform.

[0010] Preferably, four sets of lifting rods are fixedly connected to the rotating disc, one end of the lifting rods is in arc structure, and a limit rod is fixedly connected to the lifting rods.

[0011] Preferably, four sets of sliding grooves are formed in the inner wall of the landing platform, lifting platforms are slidably connected in the sliding grooves, limit blocks are fixedly connected to the two sides of the lifting platforms, and the limit blocks are matched with the sliding grooves.

[0012] Preferably, a limit groove is formed in one side of the lifting platform, the lifting platform is in trapezoidal shape with wide top and narrow bottom, and the lifting rods are matched with the limit groove.

[0013] Preferably, an air guide opening is formed in the top of the support platform, the air guide opening is located at the center of the top of the support platform, the air guide opening is in horn shape with one side opening, and the bottom of the air guide opening is matched with the drive fan.

[0014] Preferably, the drive fan is located at the center of the support platform.

[0015] Preferably, the bottom of one end of the extension table is fixedly connected with a contact plate, and the contact plate is in contact with one end of the lifting table.

[0016] Preferably, a plurality of friction grooves are formed in the top surface of the extension table.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the present application provides an unmanned aerial vehicle precision landing device based on RFID navigation assistance, which has the following beneficial effects:

[0019] 1. The integrated transmitter installed on the unmanned aerial vehicle communicates with the RFID transmitter in the landing platform to realize precise positioning of the unmanned aerial vehicle. When the unmanned aerial vehicle approaches the landing platform, the RFID system (Radio Frequency Identification, RFID) provides real-time position data to guide the unmanned aerial vehicle to gradually adjust the flight attitude and position. During landing, the driving assembly controls the expansion of the expansion assembly to adjust the landing area of the support platform, ensuring stable landing of the unmanned aerial vehicle in different environments; the use of RFID technology realizes precise landing of the unmanned aerial vehicle, effectively improves the landing precision and safety, the expansion assembly can flexibly adjust the landing area of the support platform according to the landing environment, enhances the adaptability of the system, reduces the risk of unmanned aerial vehicle landing, is easy to install and maintain, and has good practicality and reliability

[0020] 2. The unmanned aerial vehicle precision landing device based on RFID navigation assistance, when the spiral fan blade approaches the support platform, that is, when the unmanned aerial vehicle lands, the driving fan is blown by the wind force of the spiral fan blade. When the driving fan rotates, it can synchronously drive the rotating rod to rotate in the landing platform. When the rotating rod rotates, the reciprocating screw groove formed on the rotating rod can make the rotating disc move on the rotating rod, realizing precise lifting adjustment of the rotating disc and the lifting rod connected thereto, improving the stability and precision of the landing device. At the same time, the setting of the limiting plate effectively prevents the rotating disc from exceeding the set range, ensuring the safe operation of the system. The arc structure and limiting rod of the lifting rod make the device more stable and reliable during operation, further improving the stability and safety of the unmanned aerial vehicle during landing.

[0021] 3. The unmanned aerial vehicle precision landing device based on RFID navigation assistance, by sliding the lifting rod in the limiting groove, so when the rotating disc drives the lifting rod to rise and fall, through the trapezoidal shape of the lifting platform, it can synchronously push the lifting platform to slide in the sliding groove, and when the lifting platform slides, it can drive the contact plate to move synchronously, when the contact plate moves, it can drive the extension platform to slide in the fixed platform, through the deflection guide between the connecting arm and the rotating shaft, it can separate the extension platform from the fixed platform, thereby increasing the area of the support platform surface, so as to realize flexible adjustment of the support platform area and improve the stability of the unmanned aerial vehicle landing.

[0022] 4. The unmanned aerial vehicle precision landing device based on RFID navigation assistance, when the unmanned aerial vehicle contacts the surface of the extension platform, under the action of gravity of the unmanned aerial vehicle, the extension platform can remain separated from the fixed platform, when the unmanned aerial vehicle separates from the surface of the extension platform, under the action of gravity, the limiting groove can drive the lifting rod to move, thereby realizing the approach of the fixed platform and the extension platform, so as to change the area of the support platform and improve the overall stability of the device, which is compact in structure, easy to operate, has good practicability and reliability.

[0023] 5. The unmanned aerial vehicle precision landing device based on RFID navigation assistance, by rotating the driving fan, air flow is introduced into the air inlet, and through the horn-shaped opening structure, air flow is effectively guided and concentrated, which enhances the auxiliary effect of air flow on unmanned aerial vehicle landing and improves the stability in the landing process, thereby improving the stability and precision of the unmanned aerial vehicle in the landing process, the horn-shaped air inlet design helps to optimize the air flow path, reduce vortex and air flow disturbance, further improve the precision of unmanned aerial vehicle landing, and improve the safety and precision of unmanned aerial vehicle landing.

[0024] 6. The unmanned aerial vehicle precision landing device based on RFID navigation assistance, by embedding the 2.4G frequency RFID (Radio Frequency Identification, RFID) into the chip in the integrated transmitter by writing the code, when the RFID transmitter in the landing platform emits the corresponding radio frequency signal, the integrated transmitter receives the corresponding radio frequency signal, the AI intelligent automatically identifies the priority to accept the radio frequency signal, the radio frequency sector signal will guide the aircraft to align the ID address (based on the network number information communication system platform user network information communication number) to slowly land, the maximum distance of sector expansion is 200 meters, and the low-altitude national regulation limit height is 120 meters, the sector signal is smaller as it is closer to the RFID transmitter range, and it can reach millimeter level precision when landing in the radio frequency center, and the GPS precision error is 20cm-100cm, especially in the super-visual distance of about 50cm, it is difficult to achieve precise landing without relying on high-definition camera self-patrol conditions, therefore, the above operation can realize the precise guidance of the unmanned aerial vehicle landing, and improve the precision of the unmanned aerial vehicle landing. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 is a schematic diagram of the three-dimensional structure of the present application;

[0026] Fig. 2 is a schematic diagram of the three-dimensional structure of the unmanned aerial vehicle mounting frame of the present application;

[0027] Fig. 3 is a schematic diagram of the three-dimensional structure of the top of the landing platform of the present application;

[0028] Fig. 4 is a schematic diagram of the three-dimensional structure of the extension platform of the present application;

[0029] Fig. 5 is a schematic diagram of the three-dimensional structure of the inside of the landing platform of the present application;

[0030] Fig. 6 is a schematic diagram of the three-dimensional structure of the connecting arm of the present application;

[0031] Fig. 7 is a schematic diagram of the three-dimensional structure of the landing platform of the present application;

[0032] Fig. 8 is an enlarged view of A in Fig. 7 of the present application;

[0033] Fig. 9 is a schematic diagram of the three-dimensional structure of the air outlet of the present application;

[0034] Fig. 10 is a schematic diagram of the principle flowchart of the RFID navigation assisted unmanned aerial vehicle of the present application.

[0035] In the figure: 1, unmanned aerial vehicle mounting rack; 2, battery; 3, connecting frame; 4, helical fan blade; 5, integrated transmitter; 6, support table; 7, landing platform; 8, rotating rod; 9, driving fan; 10, rotating disc; 11, lifting rod; 12, limiting rod; 13, sliding groove; 14, lifting platform; 15, limiting block; 16, limiting groove; 17, fixed table; 18, extension table; 19, first connecting plate; 20, connecting arm; 21, rotating shaft; 22, connecting rod; 23, second connecting plate; 24, contact plate; 25, air guide opening. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0037] As introduced in the background, the existing problems in the prior art, in order to solve the above technical problems, the present application provides a kind of unmanned aerial vehicle precision landing device based on RFID navigation assistance.

[0038] In a typical embodiment of the present application, as shown in Figures 1-10, a kind of unmanned aerial vehicle precision landing device based on RFID navigation assistance, including unmanned aerial vehicle mounting rack 1, the top of unmanned aerial vehicle mounting rack 1 is equipped with battery 2, unmanned aerial vehicle mounting rack 1 is fixedly connected with multiple groups of connecting frame 3, connecting frame 3 is equipped with helical fan blade 4, integrated transmitter 5 is installed in unmanned aerial vehicle mounting rack 1, the bottom of unmanned aerial vehicle mounting rack 1 contacts with support table 6, support table 6 is fixedly installed on landing platform 7, landing platform 7 contacts with the ground, RFID transmitter is installed in landing platform 7, landing platform 7 is equipped with driving assembly; landing platform 7 is fixedly connected with expansion assembly around, driving assembly is used to control expansion assembly expansion; expansion assembly is used to adjust the landing area of support table 6;

[0039] The integrated transmitter 5 installed on the unmanned aerial vehicle communicates with the RFID transmitter in the landing platform 7 to realize accurate positioning of the unmanned aerial vehicle. When the unmanned aerial vehicle approaches the landing platform 7, the RFID (Radio Frequency Identification, RFID) system provides real-time position data to guide the unmanned aerial vehicle to gradually adjust the flight attitude and position. During the landing process, the driving assembly controls the expansion of the expansion assembly to adjust the landing area of the support platform 6, so that the unmanned aerial vehicle can stably land in different environments. The use of RFID technology realizes accurate landing of the unmanned aerial vehicle, effectively improves the landing accuracy and safety, and the expansion assembly can flexibly adjust the landing area of the support platform 6 according to the landing environment, enhances the adaptability of the system, reduces the risk of unmanned aerial vehicle landing, is easy to install and maintain, and has good practicality and reliability.

[0040] As a preferred embodiment in the present embodiment, referring to Figures 5, 7-9, the driving assembly includes a rotating rod 8 rotatably connected to the bottom of the landing platform 7, a reciprocating threaded groove is formed in the rotating rod 8, a driving fan 9 is fixedly connected to the top of the rotating rod 8, the air inlet of the driving fan 9 is upwardly formed, a rotating disc 10 is threadedly sleeved on the rotating rod 8, a set of limiting plates are fixedly connected to the top and bottom of the rotating rod 8, respectively; four groups of lifting rods 11 are fixedly connected to the rotating disc 10, one end of the lifting rod 11 is in an arc structure, and a limiting rod 12 is fixedly connected to the lifting rod 11;

[0041] When the spiral fan blade 4 approaches the support platform 6, it is the unmanned aerial vehicle landing, the wind of the spiral fan blade 4 drives the driving fan 9, when the driving fan 9 rotates, it can synchronously drive the rotating rod 8 to rotate in the landing platform 7, and then when the rotating rod 8 rotates, the rotating disc 10 can move on the rotating rod 8 by the reciprocating threaded groove formed in the rotating rod 8, realizing accurate lifting adjustment of the rotating disc 10 and the lifting rods 11 connected thereto, improving the stability and accuracy of the landing device, and the limiting plates effectively prevent the rotating disc 10 from exceeding the set range, ensuring the safe operation of the system. The arc structure of the lifting rod 11 and the limiting rod 12 make the device more stable and reliable during operation, further improving the stability and safety of the unmanned aerial vehicle during landing.

[0042] As a preferred embodiment in the embodiment, with reference to Figures 3, 4 and 6, the expansion assembly comprises a fixed platform 17 fixedly connected to the landing platform 7, an extension platform 18 slidingly connected in the fixed platform 17, a group of first connecting plates 19 fixedly connected to the bottom of the extension platform 18, connecting arms 20 rotatably connected to the inner wall of the first connecting plates 19, the connecting arms 20 being rotatably connected through a rotating shaft 21, one end of the connecting arms 20 being fixedly connected to a connecting rod 22, the connecting rod 22 being rotatably connected to the inner wall of a second connecting plate 23, the second connecting plate 23 being fixedly connected to the landing platform 7; four groups of sliding grooves 13 are formed in the inner wall of the landing platform 7, a lifting platform 14 is slidingly connected in the sliding grooves 13, limit blocks 15 are fixedly connected to the two sides of the lifting platform 14, the limit blocks 15 being matched with the sliding grooves 13; a limit groove 16 is formed in one side of the lifting platform 14, the lifting platform 14 being a trapezoid with the upper part being wider and the lower part being narrower, the lifting rod 11 being matched with the limit groove 16; a contact plate 24 is fixedly connected to the bottom of one end of the extension platform 18, the contact plate 24 being in contact with one end of the lifting platform 14; a plurality of friction grooves are formed in the top surface of the extension platform 18;

[0043] By sliding the lifting rod 11 in the limit groove 16, when the rotating disc 10 drives the lifting rod 11 to lift, the lifting platform 14 is a trapezoid with the upper part being wider and the lower part being narrower, so as to synchronously push the lifting platform 14 to slide in the sliding groove 13, when the lifting platform 14 slides, the contact plate 24 is synchronously moved, when the contact plate 24 moves, the extension platform 18 is slidingly moved in the fixed platform 17, through the deflection between the connecting arms 20 and the rotating shaft 21, the extension platform 18 is separated from the fixed platform 17, so as to increase the area of the surface of the support platform 6, thereby realizing the flexible adjustment of the area of the support platform 6 and improving the stability when the unmanned aerial vehicle lands;

[0044] When the unmanned aerial vehicle is in contact with the surface of the extension platform 18, under the action of the gravity of the unmanned aerial vehicle, the extension platform 18 is kept in the state of being separated from the fixed platform 17, when the unmanned aerial vehicle is separated from the surface of the extension platform 18, under the action of the gravity, the lifting rod 11 is moved through the limit groove 16, so as to realize the approach of the fixed platform 17 and the extension platform 18, thereby completing the change of the area of the support platform 6, improving the overall stability of the device, and having compact structure, simple operation, good practicability and reliability.

[0045] As a preferred embodiment in the embodiment, referring to Figures 3, 4 and 9, the top of the support table 6 is provided with an air guide opening 25, which is located at the center of the top of the support table 6 and has a horn shape opening to one side, the bottom of the air guide opening 25 is matched with the driving fan 9, and the driving fan 9 is located at the center of the support table 6; through the rotation of the driving fan 9, the airflow is introduced into the air guide opening 25 and effectively guided and concentrated through the horn-shaped opening structure, thereby enhancing the auxiliary effect of the airflow on the landing of the unmanned aerial vehicle and improving the stability in the landing process, so as to improve the stability and precision of the unmanned aerial vehicle in the landing process, and the horn-shaped air guide opening 25 helps to optimize the airflow path, reduce vortex and airflow disturbance, and further improve the precision of the unmanned aerial vehicle landing and the safety and precision of the unmanned aerial vehicle landing.

[0046] As a preferred embodiment in the embodiment, referring to Figure 10, the 2.4G frequency RFID (Radio Frequency Identification, RFID) is written into the chip in the integrated transmitter 5 as a code, when the corresponding radio frequency signal is transmitted by the RFID transmitter in the landing table 7, the corresponding radio frequency signal is received by the integrated transmitter 5, the AI intelligent automatically identifies and gives priority to receiving the radio frequency signal, the radio frequency fan-shaped signal will guide the aircraft to slowly land in the ID address (user network information communication number based on the network number information communication system platform) in the landing table 7, the maximum distance of the fan-shaped expansion is 200 meters, and the low-altitude national regulation limit height is 120 meters, the fan-shaped signal is smaller as it is closer to the RFID transmitter range, and can reach millimeter-level precision when landing in the radio frequency center, while the GPS precision error is 20cm-100cm, especially in the over-the-horizon of about 50cm, it is difficult to achieve precise landing without relying on high-definition camera self-cruise, therefore, the above operation can realize accurate guidance of the unmanned aerial vehicle landing and improve the precision of the unmanned aerial vehicle landing.

[0047] The working principle of the application is as follows: when the helical fan blade 4 is close to the support table 6, that is, when the unmanned aerial vehicle is landing, the helical fan blade 4 blows the driving fan 9 by wind power, when the driving fan 9 rotates, it can synchronously drive the rotating rod 8 to rotate in the landing table 7, and when the rotating rod 8 rotates, the rotating disc 10 can move on the rotating rod 8 through the reciprocating thread groove formed on the rotating rod 8, so as to realize the precise lifting adjustment of the rotating disc 10 and the lifting rod 11 connected thereto, improve the stability and precision of the landing device, and the setting of the limiting plate effectively prevents the rotating disc 10 from exceeding the set range, ensures the safe operation of the system, and the arc structure of the lifting rod 11 and the limiting rod 12 make the device more stable and reliable in the working process, further improve the stability and safety of the unmanned aerial vehicle in the landing process.

[0048] The lifting rod 11 slides in the limiting groove 16, so when the rotating disc 10 drives the lifting rod 11 to lift, the lifting platform 14 can synchronously push the lifting platform 14 to slide in the sliding groove 13, and when the lifting platform 14 slides, the contact plate 24 can be synchronously moved, and when the contact plate 24 moves, the extension platform 18 can slide in the fixed platform 17, and through the deflection guide between the connecting arm 20 and the rotating shaft 21, the extension platform 18 can be separated from the fixed platform 17, so that the area of the supporting platform 6 is increased, and the stability of the unmanned aerial vehicle during landing is improved; when the unmanned aerial vehicle contacts the surface of the extension platform 18, the extension platform 18 can be kept separated from the fixed platform 17 under the action of gravity of the unmanned aerial vehicle, and when the unmanned aerial vehicle separates from the surface of the extension platform 18, the lifting rod 11 can be driven to move through the limiting groove 16 under the action of gravity, so that the fixed platform 17 and the extension platform 18 are close to each other, and the area of the supporting platform 6 is changed, the overall stability of the device is improved, the structure is compact, the operation is simple, and the device has good practicability and reliability.

[0049] Through the rotation of the driving fan 9, the airflow is introduced into the air guide 25, and the airflow is effectively guided and concentrated through the trumpet-shaped opening structure, so that the auxiliary effect of the airflow on the landing of the unmanned aerial vehicle is enhanced, and the stability during landing is improved, so that the stability and precision of the unmanned aerial vehicle during landing are improved, and the trumpet-shaped air guide 25 is designed to help optimize the airflow path, reduce vortex and airflow disturbance, and further improve the precision of the unmanned aerial vehicle landing, and improve the safety and precision of the unmanned aerial vehicle landing.

[0050] By embedding the 2.4G RFID code into the chip of the unmanned aerial vehicle, when the RFID transmitter in the landing platform 7 emits a corresponding radio frequency signal, the integrated transmitter 5 receives the corresponding radio frequency signal, the AI intelligent automatically identifies the priority of receiving the radio frequency signal, and the radio frequency fan-shaped signal will guide the aircraft to land slowly to the ID address, and the maximum distance of the fan-shaped expansion is 200 meters, and the low-altitude national regulation limit height is 120 meters, the fan-shaped signal is smaller as it approaches the RFID transmitter range, and can reach millimeter-level precision when landing to the radio frequency center, and the GPS precision error is 20cm-100cm, especially in the super-visual distance of about 50cm, it is difficult to realize precise landing without relying on high-definition camera self-cruise, therefore, through the above operation, the precise guidance of the unmanned aerial vehicle landing can be realized, and the precision of the unmanned aerial vehicle landing is improved.

[0051] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A precision landing device for unmanned aerial vehicles based on RFID navigation assistance, comprising a drone mounting frame (1), wherein a battery (2) is provided on the top of the drone mounting frame (1), and multiple sets of connecting frames (3) are fixedly connected to the drone mounting frame (1), wherein the connecting frames (3) are provided with spiral fan blades (4), characterized in that: The unmanned plane mounting rack (1) is provided with an integrated transmitter (5), the bottom of the unmanned plane mounting rack (1) is in contact with a support table (6), the support table (6) is fixedly installed on a landing platform (7), the landing platform (7) is in contact with the ground, the landing platform (7) is provided with an RFID transmitter, and the landing platform (7) is provided with a driving assembly; the periphery of the landing platform (7) is fixedly connected with an expansion assembly. The driving assembly is used for controlling the expansion of the expansion assembly. The expansion assembly is used for adjusting the landing area of the support table (6).

2. The precision landing apparatus for unmanned aerial vehicles based on RFID navigation assistance of claim 1, wherein: The driving assembly comprises a rotating rod (8) rotatably connected to the bottom of the landing platform (7), a reciprocating threaded groove is formed in the rotating rod (8), the top of the rotating rod (8) is fixedly connected with a driving fan (9), the air inlet of the driving fan (9) is upwardly formed, the rotating rod (8) is threadedly sleeved with a rotating disc (10), and a group of limiting plates are fixedly connected to the top and the bottom of the rotating rod (8).

3. The precision landing apparatus for unmanned aerial vehicles based on RFID navigation assistance of claim 2, wherein: The expansion assembly comprises a fixed table (17) fixedly connected to the landing platform (7), the fixed table (17) is slidably connected with an extension table (18), the bottom of the extension table (18) is fixedly connected with a group of first connecting plates (19), the inner wall of the first connecting plate (19) is rotatably connected with a connecting arm (20), the connecting arms (20) are rotatably connected through a rotating shaft (21), one end of the connecting arm (20) is fixedly connected to a connecting rod (22), the connecting rod (22) is rotatably connected to the inner wall of a second connecting plate (23), and the second connecting plate (23) is fixedly connected to the landing platform (7).

4. The precision landing apparatus for unmanned aerial vehicles based on RFID navigation assistance of claim 3, wherein: Four groups of lifting rods (11) are fixedly connected to the rotating disc (10), one end of the lifting rod (11) is in an arc structure, and a limiting rod (12) is fixedly connected to the lifting rod (11).

5. The precision landing apparatus for unmanned aerial vehicles based on RFID navigation assistance of claim 4, wherein: Four groups of sliding grooves (13) are formed in the inner wall of the landing platform (7), a lifting table (14) is slidably connected in the sliding groove (13), limiting blocks (15) are fixedly connected to the two sides of the lifting table (14), and the limiting blocks (15) are matched with the sliding grooves (13).

6. The precision landing apparatus for unmanned aerial vehicles based on RFID navigation assistance of claim 5, wherein: One side of the lifting table (14) is provided with a limiting groove (16), the lifting table (14) is in a trapezoidal shape with a wide top and a narrow bottom, and the lifting rod (11) is matched with the limiting groove (16).

7. The precision landing apparatus for unmanned aerial vehicles based on RFID navigation assistance of claim 2, wherein: The top of the support table (6) is provided with an air inlet (25), the air inlet (25) is located at the center of the top of the support table (6), the air inlet (25) is in a horn shape with an opening to one side, and the bottom of the air inlet (25) is matched with the driving fan (9).

8. The precision landing apparatus for unmanned aerial vehicles based on RFID navigation assistance of claim 7, wherein: The driving fan (9) is located at the center of the support table (6).

9. The precision landing apparatus for unmanned aerial vehicles based on RFID navigation assistance of claim 5, wherein: One end of the bottom of the extension table (18) is fixedly connected with a contact plate (24), and the contact plate (24) is in contact with one end of the lifting table (14).

10. The precision landing apparatus for unmanned aerial vehicles based on RFID navigation assistance of claim 9, wherein: A plurality of friction grooves are formed in the top surface of the extension table (18).

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