An unmanned aerial vehicle wireless charging system based on photovoltaic power generation

Abstract

This invention discloses a wireless charging system for unmanned aerial vehicles (UAVs) based on photovoltaic power generation, comprising: a support base, a landing platform, a landing assembly, and a power supply assembly. The landing platform is movably connected to the support base. The landing assembly includes an electromagnetic adsorption component and a wireless charging module. The electromagnetic adsorption component is connected to the landing platform and is used to magnetically adsorb the rotorcraft UAV. The wireless charging module is connected to the electromagnetic adsorption component and is used to supply power to the rotorcraft UAV. The power supply assembly includes at least one photovoltaic panel and an energy storage battery. The photovoltaic panel is connected to the landing platform. The energy storage battery is electrically connected to the photovoltaic panel and the wireless charging module, used to temporarily store the electrical energy converted by the photovoltaic panel and supply power to the wireless charging module. This invention effectively solves the problem that most UAV wireless charging platforms rely on external power grids for power supply and cannot be deployed in water transport scenarios without power grid coverage, resulting in poor applicability of the charging platform.

Description

Technical Field

[0001] This invention relates to the field of logistics drone technology, and more specifically to a wireless charging system for drones based on photovoltaic power generation. Background Technology

[0002] With the deepening of the intelligent and green transformation of water transport logistics, rotary-wing drones are widely used for material distribution and emergency rescue between port container yards, inland river terminals, ocean-going vessels and islands.

[0003] To overcome the inherent drawbacks of short flight time and limited battery energy density in rotary-wing drones, autonomous charging stations using electrical contact can achieve high power transmission efficiency under specific landing postures. For example, Chinese invention patent CN114043890A, entitled "A Wireless Charging Cabin for Drones and a Column-Mounted Wireless Charging Cabin for Drones," includes: a cabin body, a landing pad mounted on the cabin body, and a pair of doors mounted on the top of the cabin body. The doors are movably connected to the cabin body via connectors. An electric drive mechanism drives the connectors to move, thereby opening and closing the pair of doors in opposite directions. When the doors are closed, the doors and the landing pad form a cavity for accommodating drones. A wireless charging transmitting coil is located below the landing pad for wirelessly charging drones parked on the landing pad. This device, through the above structural design, achieves automated opening and closing of the doors, making it more intelligent, and the wireless charging cabin charges drones wirelessly, making the charging method safer and more convenient.

[0004] However, most of the aforementioned platforms rely on external power grids for power supply and cannot be deployed in water transport scenarios without power grid coverage, resulting in poor applicability. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a wireless charging system for drones based on photovoltaic power generation. This solves the technical problem that existing wireless charging platforms for drones mostly rely on external power grids for power supply and cannot be deployed in water transport scenarios without power grid coverage, resulting in poor applicability of the charging platform.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: This invention provides a wireless charging system for unmanned aerial vehicles (UAVs) based on photovoltaic power generation, comprising: Support base; A landing platform is movably connected to the support base; A landing assembly includes an electromagnetic adsorption component and a wireless charging module. The electromagnetic adsorption component is connected to the landing platform for magnetically adsorbing the rotorcraft drone, and the wireless charging module is connected to the electromagnetic adsorption component for supplying power to the rotorcraft drone. The power supply component includes at least one photovoltaic panel and an energy storage battery. The photovoltaic panel is connected to the landing platform, and the energy storage battery is electrically connected to the photovoltaic panel and the wireless charging module to temporarily store the electrical energy converted by the photovoltaic panel and supply power to the wireless charging module.

[0007] In some embodiments, the energy supply component comprises a plurality of photovoltaic panels, which are arranged along the circumferential direction of the electromagnetic adsorption member and are all connected to the landing platform, and are all electrically connected to the energy storage battery.

[0008] In some embodiments, the photovoltaic-based drone wireless charging system further includes a buffer component, which is disposed between the landing platform and the electromagnetic adsorption component and is connected to both the landing platform and the electromagnetic adsorption component. The buffer component is capable of generating a restoring force that automatically resets the electromagnetic adsorption component after it moves close to the landing platform.

[0009] In some embodiments, the buffer assembly includes at least one buffer member, the buffer member including a fixed body and an elastic part, the fixed body being connected to the landing platform, and one end of the elastic part being connected to the fixed body and the other end being connected to the electromagnetic adsorption member.

[0010] In some embodiments, the number of buffers is four, and the four elastic portions are evenly distributed on the four periphery of the electromagnetic adsorption member.

[0011] In some embodiments, the buffer assembly further includes at least two dampers, each damper having a fixed end and a telescopic end, the fixed end of the damper being hinged to the landing platform and the telescopic end being hinged to the electromagnetic adsorption member.

[0012] In some embodiments, the number of dampers in the buffer assembly is four, and the four dampers are evenly distributed at the four corners of the electromagnetic adsorption component.

[0013] In some embodiments, the photovoltaic-based drone wireless charging system further includes a drive assembly, which includes a rotating body, a first drive member, and a second drive member. The rotating body is disposed between the support base and the landing platform. The first drive member is connected to both the rotating body and the landing platform and is used to drive the landing platform to rotate relative to the rotating body about an axis in a first direction. The second drive member is connected to the support base and the rotating body and is used to drive the landing platform and the rotating body to rotate relative to the support base about an axis in a second direction, wherein the second direction is perpendicular to the first direction.

[0014] In some embodiments, the photovoltaic-based drone wireless charging system further includes two vision acquisition devices, which are distributed on both sides of the landing platform and connected to the landing platform. The two vision acquisition devices are electrically connected to the first drive unit and the second drive unit, respectively.

[0015] In some embodiments, the two vision acquisition devices are electrically connected to the plurality of dampers respectively.

[0016] Compared with existing technologies, the beneficial effects of the photovoltaic-based drone wireless charging system provided by this invention include: a landing platform is movably mounted on the support base; an electromagnetic adsorption component is connected to the landing platform for magnetically adsorbing the rotorcraft drone; a wireless charging module is connected to the electromagnetic adsorption component for supplying power to the rotorcraft drone; and at least one photovoltaic panel is connected to the landing platform for converting solar energy into electrical energy. The converted electrical energy is temporarily stored in an energy storage battery and used to supply power to the wireless charging module. Compared with existing technologies, by simultaneously setting the electromagnetic adsorption component, the wireless charging module, and the photovoltaic panel on the landing platform, the drone is fixed using the electromagnetic adsorption component, and then the solar energy is converted into electrical energy by the photovoltaic panel and then used to charge the drone via the wireless charging module. This not only enables wireless charging of the drone, but also eliminates the need for external power grid supply. This solves the technical problem in existing technologies where drone wireless charging platforms mostly rely on external power grid supply and cannot be deployed in water transport scenarios without power grid coverage, resulting in poor applicability of the charging platform. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a wireless charging system for unmanned aerial vehicles based on photovoltaic power generation, provided in an embodiment of the present invention; Figure 2 This is a schematic diagram from another perspective of a photovoltaic power generation-based wireless charging system for unmanned aerial vehicles provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of a wireless charging system for unmanned aerial vehicles based on photovoltaic power generation, provided in another embodiment of the present invention; Figure 4 This is a schematic diagram of the electrical connection of a drone wireless charging system based on photovoltaic power generation, provided in an embodiment of the present invention; Figure 5 A schematic diagram of an adaptive matching method for damping force and excitation current provided in an embodiment of the present invention; Figure 6 This is a flowchart of a spot detection and beam-tracking closed-loop control strategy provided in an embodiment of the present invention; Figure 7 A unified scheduling flowchart of a multi-source monitoring and control center provided in an embodiment of the present invention; Figure 8This is a flowchart illustrating the operation of a photovoltaic power generation-based wireless charging system for unmanned aerial vehicles (UAVs) according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: Support base 100; landing platform 200; landing assembly 300; electromagnetic adsorption component 310; wireless charging module 320; power supply component 400; photovoltaic panel 410; energy storage battery 420; control center 500; buffer assembly 600; buffer component 610; damper 620; drive assembly 700; rotating body 710; first drive component 720; second drive component 730; vision acquisition component 800. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] To address the technical problem that most drone wireless charging platforms rely on external power grids and cannot be deployed in water transport scenarios without power grid coverage, resulting in poor applicability of the charging platforms, this invention provides a drone wireless charging system based on photovoltaic power generation. This system simultaneously installs an electromagnetic adsorption component 310, a wireless charging module 320, and a photovoltaic panel 410 on a landing platform 200. The electromagnetic adsorption component 310 secures the drone, and the photovoltaic panel 410 converts solar energy into electrical energy, which is then used to charge the drone via the wireless charging module 320. This not only enables wireless charging of the drone but also eliminates the need for an external power grid.

[0021] Please see Figure 1 , Figure 2 , Figure 1 This is a schematic diagram of a photovoltaic-based wireless charging system for unmanned aerial vehicles (UAVs) according to an embodiment of the present invention. The photovoltaic-based wireless charging system includes a support base 100, a landing platform 200, a landing assembly 300, and a power supply assembly 400. The landing platform 200 is movably connected to the support base 100. The landing assembly 300 includes an electromagnetic adsorption component 310 and a wireless charging module 320. The electromagnetic adsorption component 310 is connected to the landing platform 200 and is used to magnetically adsorb a rotorcraft UAV. The wireless charging module 320 is connected to the electromagnetic adsorption component 310 and is used to supply power to the rotorcraft UAV. The power supply assembly 400 includes at least one photovoltaic panel 410 and an energy storage battery 420. The photovoltaic panel 410 is connected to the landing platform 200. The energy storage battery 420 is electrically connected to the photovoltaic panel 410 and the wireless charging module 320 and is used to temporarily store the electrical energy converted by the photovoltaic panel 410 and supply power to the wireless charging module 320.

[0022] In this device, compared with the prior art, by simultaneously setting an electromagnetic adsorption component 310, a wireless charging module 320, and a photovoltaic panel 410 on the landing platform 200, the drone is fixed by the electromagnetic adsorption component 310, and the solar energy is converted into electrical energy by the photovoltaic panel 410 and then charged by the wireless charging module 320. This not only enables wireless charging of the drone, but also eliminates the need for external power grid supply. This solves the technical problem in the prior art where most drone wireless charging platforms rely on external power grid supply and cannot be deployed in water transport scenarios without power grid coverage, resulting in poor applicability of the charging platform.

[0023] Furthermore, both the support base 100 and the landing platform 200 are common and readily available profiles on the market. The support base 100 is hollow inside for cable routing, and the dimensions of the landing platform 200 are selected reasonably according to the specific situation, which will not be elaborated here.

[0024] Furthermore, the drone here is a common and readily available rotary-wing drone on the market, and the rotary-wing drone is equipped with a wireless charging module that enables wireless power transmission. This is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0025] In some embodiments, the electromagnetic adsorption component 310 is composed of multiple sets of annular electromagnets, which are arranged concentrically. When the electromagnets are energized, they can magnetically adsorb the drone. The transmitting coil of the wireless charging module 320 is embedded in the center of the multiple sets of annular electromagnets, and the upper surface of the transmitting coil is on the same horizontal plane as the upper surface of the electromagnets. This wireless charging module 320 is a conventional configuration known to those skilled in the art and will not be described in detail here.

[0026] Furthermore, the landing assembly 300 includes a housing that covers the electromagnetic adsorption component 310 and the wireless charging module 320, and is detachably connected to the landing platform 200 to protect the electromagnetic adsorption component 310 and the wireless charging module 320. This is a conventional arrangement known to those skilled in the art and will not be described in detail here.

[0027] In addition, in some embodiments, the photovoltaic panel 410 is a commercially available and readily procurable solar photovoltaic panel 410, which can convert solar energy into electrical energy. This is a conventional setting known to those skilled in the art and will not be described in detail here.

[0028] Further, the energy storage battery 420 here is a commonly available and easily procurable lithium iron phosphate battery or ternary lithium battery on the market, capable of charging and discharging. The energy storage battery 420 is disposed below the support base 100, and the interior of the support base 100 is hollow for wiring, so as to realize electrical conduction between the energy storage battery 420 and devices such as the photovoltaic panel 410, the electromagnetic adsorption member 310, and the wireless charging module 320. This is a conventional arrangement well known to those skilled in the art, and will not be elaborated herein.

[0029] In addition, in some embodiments, a DC fuse, an MPPT / PWM charge controller, a DC circuit breaker, and the like are further disposed between the photovoltaic panel 410 and the energy storage battery 420, which are used to cooperatively realize the conversion of solar energy into electric energy. This is a conventional arrangement well known to those skilled in the art, and will not be elaborated herein.

[0030] In addition, in some embodiments, the photovoltaic power generation-based unmanned aerial vehicle wireless charging system further includes a control center 500. The control center 500 is a commonly available and easily procurable controller on the market, which utilizes the coaxial adsorption effect of the target and the electromagnet to automatically achieve physical alignment between the transmitting coil and the receiving coil after landing. After detecting that the adsorption and locking are completed, the control center 500 automatically starts the wireless charging protocol to perform constant-current or constant-voltage charging on the unmanned aerial vehicle battery through electromagnetic induction, without manual plugging and unplugging, which will not be elaborated herein.

[0031] In this embodiment, as shown in Figures 1 to 3 , the number of the photovoltaic panels 410 in the power supply assembly 400 is multiple. The multiple photovoltaic panels 410 are arranged along the circumferential direction of the electromagnetic adsorption member 310, are all connected to the landing platform 200, and are all electrically connected to the energy storage battery 420.

[0032] By arranging the multiple photovoltaic panels 410, the power supply voltage of the wireless charging module 320 can be effectively guaranteed.

[0033] The multiple photovoltaic panels 410 are arranged in the circumferential direction of the electromagnetic adsorption member 310, which can reasonably and efficiently utilize the space of the landing platform 200, and is not only aesthetic in shape but also high in power generation efficiency.

[0034] In addition, in some embodiments, the multiple photovoltaic panels 410 are distributed in a "square" shape, and the electromagnetic adsorption member 310 and the wireless charging module 320 are located at the center of the multiple photovoltaic panels 410.

[0035] In one of the embodiments, as shown in Figure 3As shown, the drone wireless charging system based on photovoltaic power generation also includes a buffer component 600. The buffer component 600 is disposed between the landing platform 200 and the electromagnetic adsorption component 310, and is connected to both the landing platform 200 and the electromagnetic adsorption component 310. The buffer component 600 can generate a restoring force that pushes the electromagnetic adsorption component 310 close to the landing platform 200 and then automatically resets it.

[0036] By setting up the buffer component 600, the impact force during drone landing can be effectively mitigated, preventing damage to the drone or charging system.

[0037] In one embodiment, such as Figure 3 As shown, the buffer assembly 600 includes at least one buffer member 610. The buffer member 610 includes a fixed body and an elastic part. The fixed body is connected to the landing platform 200, and one end of the elastic part is connected to the fixed body and the other end is connected to the electromagnetic adsorption member 310.

[0038] By setting up a buffer structure consisting of an elastic part and a fixed body, a stable and effective damping or buffering effect can be provided for the landing platform 200 and electromagnetic adsorption.

[0039] Furthermore, the elastic component here is a spring, elastic block, or spring sheet that is common and readily available in the market. This is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0040] In one embodiment, such as Figure 3 As shown, there are four buffer members 610, and the four elastic parts are evenly distributed on the four sides of the electromagnetic adsorption member 310.

[0041] By providing four elastic parts on the four sides of the electromagnetic adsorption component 310, the impact force can be evenly distributed across multiple elastic parts, ensuring stability and balance under impact.

[0042] Furthermore, the four buffers 610 are divided into two groups, with the two buffers 610 in each group arranged opposite each other.

[0043] In one embodiment, such as Figure 3 As shown, the buffer assembly 600 also includes at least two dampers 620, each having a fixed end and a telescopic end. The fixed end of the damper 620 is hinged to the landing platform 200, and the telescopic end is hinged to the electromagnetic adsorption component 310.

[0044] By setting at least two dampers 620, a smooth support force can be provided for the drone landing.

[0045] Furthermore, the cooperative structure between at least two dampers 620 can actively adjust the angle between the electromagnetic adsorption component 310 and the landing platform 200 to meet the landing of the UAV at the optimal angle, thereby effectively ensuring the smooth landing of the UAV.

[0046] In one embodiment, such as Figure 3 As shown, the buffer assembly 600 contains four dampers 620, which are evenly distributed at the four corners of the electromagnetic adsorption component 310.

[0047] By setting four dampers 620 at the four corners of the electromagnetic adsorption component 310, the tilt adjustment of the electromagnetic adsorption component 310 relative to the landing platform 200 at multiple different angles can be achieved.

[0048] Furthermore, the fixed end and telescopic end of the damper 620 are rotatably connected to the landing platform 200 or the electromagnetic adsorption component 310 via hinge seats.

[0049] In some embodiments, the damper 620 is a commercially available and readily procurable magnetorheological damper 620, which is a conventional configuration known to those skilled in the art and will not be described further here.

[0050] In one embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the drone wireless charging system based on photovoltaic power generation also includes a drive component 700. The drive component 700 includes a rotating body 710, a first drive member 720, and a second drive member 730. The rotating body 710 is disposed between the support base 100 and the landing platform 200. The first drive member 720 is connected to both the rotating body 710 and the landing platform 200, and is used to drive the landing platform 200 to rotate relative to the rotating body 710 about a first direction as an axis. The second drive member 730 is connected to the support base 100 and the rotating body 710, and is used to drive the landing platform 200 and the rotating body 710 to rotate relative to the support base 100 about a second direction as an axis, and the second direction is perpendicular to the first direction.

[0051] Here, the first driving component 720 and the second driving component 730 are respectively connected to the landing platform 200, the rotating body 710 and the support base 100. The first driving component 720 drives the landing platform 200 to rotate relative to the rotating body 710 around the first axis, and the second driving component 730 drives the landing platform 200 and the rotating body 710 to rotate relative to the support base 100 around the second axis, so that the photovoltaic panel 410 on the landing platform 200 can rotate at different tilt angles and rotate around its own axis.

[0052] Furthermore, the first direction here is the X-axis or Y-axis in a Cartesian coordinate system, and the second direction is the Z-axis in a Cartesian coordinate system, which will not be elaborated further here.

[0053] In one embodiment, such as Figure 1 , Figure 2 As shown, the feature is that the drone wireless charging system based on photovoltaic power generation also includes two visual acquisition units 800. The two visual acquisition units 800 are distributed on both sides of the landing platform 200 and are both connected to the landing platform 200. The two visual acquisition units 800 are electrically connected to the first driving unit 720 and the second driving unit 730, respectively.

[0054] By electrically connecting the two visual acquisition units 800 to the first driving unit 720 and the second driving unit 730 respectively, the position information of sunlight can be acquired, and the tilt angle or rotation angle of the photovoltaic panel 410 relative to the position of the sunlight can be dynamically adjusted based on the acquired information.

[0055] Furthermore, the visual acquisition device 800 here is a common and readily available camera on the market, which is a conventional setting known to those skilled in the art and will not be described in detail here.

[0056] In one embodiment, such as Figure 4 As shown, the two vision acquisition units 800 are electrically connected to multiple dampers 620 respectively.

[0057] The visual acquisition unit 800, in conjunction with the damper 620, can improve the accuracy of drone capture.

[0058] In some embodiments, at least two independent cameras are installed around the multi-functional landing platform and photovoltaic panel 410: the first camera is installed on one side of the platform edge, with its optical axis pointing obliquely downwards toward the center area of ​​the landing platform 200, for acquiring real-time images of the drone during landing, identifying the drone model, and measuring the landing speed and attitude; the second camera is installed on the opposite side of the platform edge, with its optical axis pointing obliquely upwards toward the sky, for acquiring sky images containing sunlight spots, which will not be described in detail here.

[0059] Furthermore, this application extracts the center coordinates of the light spot through an image processing algorithm. The two cameras are respectively connected to different image input ports of the control center 500, with independent power supply and independent triggering, without the need for time-division multiplexing. In this embodiment, an independent current drive circuit is connected to the control center 500 to achieve independent adjustment.

[0060] Furthermore, in some embodiments, the control center 500 stores a mapping table of drone models and masses. When the first camera identifies the drone model, the control center 500 directly reads the standard mass m of that model from the mapping table. At the same time, it calculates the average vertical velocity v of the drone in the range of height from 1m to 0.2m using continuous frame images and calculates the estimated impact kinetic energy Eest=0.5×m×v².

[0061] Based on the estimated impact kinetic energy, the control center 500 obtains the preset current I of the magnetorheological damper 620 by referring to a table. pre The current is output 50ms to 100ms before the drone contacts the platform, so that the magnetorheological fluid can establish its basic viscosity in advance.

[0062] Furthermore, the damper 620 is internally equipped with a force sensor. During the buffering process after the UAV contacts the platform, the force sensor detects the compressive reaction force in real time. The control center 500 uses a PID algorithm to adjust the current in a closed loop, so that the actual buffer deceleration curve tracks the preset ideal deceleration curve. This open-loop preset plus closed-loop correction strategy ensures both millisecond-level response speed and improves buffering accuracy.

[0063] Furthermore, in some embodiments, in this invention, such as Figure 5 As shown, the control center 500 calculates the required total damping force F based on the estimated impact kinetic energy, combined with the platform's own structural equivalent mass and the expected buffer stroke. d .

[0064] Based on this, the excitation current I of each magnetorheological damper 620 is determined by one of the following two methods: First, establish a mapping relationship table between damping force and current, and obtain the current value by looking up the table; Second, use a PID algorithm to adjust the current in a closed loop so that the compression speed in the actual buffering process is consistent with the preset ideal speed curve. At the moment when the UAV contacts the platform, the control center 500 immediately outputs a command to the current drive circuit of each damper 620 so that the damper 620 can quickly establish a matching damping force to achieve a soft landing effect.

[0065] In some embodiments of the present invention, the landing platform 200 is supported and connected by a three-axis rotating support. This three-axis rotating support includes a horizontal azimuth rotation axis, a pitch angle rotation axis, and a roll rotation axis, each driven by a stepper motor. The azimuth axis allows for horizontal rotation within a ±180° range, the pitch axis allows for tilt adjustment within a ±90° range, and the roll axis is used to compensate for lateral tilt deviations of the photovoltaic panel 410. This three-axis rotating support is a conventional configuration known to those skilled in the art and will not be described further here.

[0066] Furthermore, in some embodiments, in this invention, such as Figure 1 , Figure 2As shown, the second camera captures images of the sky region containing the sun in real time, and the control center 500 uses the maximum brightness threshold segmentation algorithm or the Hough circle detection algorithm to extract the center coordinates of the sunspot.

[0067] Further, the pixel offsets Δu and Δv relative to the image center are calculated. Based on the camera calibration parameters, the pixel offsets are converted into angle deviations Δθ and Δφ. The control center 500 runs the PID controller, calculates the pulse count and rotation direction of each stepper motor based on the angle deviation, and drives the three-axis rotating support to move, so that the normal of the photovoltaic panel 410 gradually aligns with the direction of the sun.

[0068] When the angular deviation is less than the preset threshold, the control center 500 stops the tracking action to save energy; when the deviation exceeds the threshold again, the tracking is restarted; in cloudy or nighttime conditions, when the camera cannot detect the light spot, the system automatically enters sleep mode.

[0069] Furthermore, in some embodiments, in this invention, such as Figure 6 As shown, the control center 500, as the core decision-making unit of the entire platform, runs a unified scheduling program. The main loop of this program includes the following steps: Step A, polling the image data of the first and second cameras; Step B, determining whether there is a drone landing request signal; if so, prioritizing the execution of the drone landing control process (visual recognition, kinetic energy estimation, damping preset, landing monitoring, adsorption locking, and wireless charging); Step C, if there is no landing task, executing the light-tracking control process (spot detection, angle deviation calculation, PID control, and motor drive); Step D, detecting the drone's charging status, and when the battery level reaches a preset threshold, the control center 500 issues an unlocking and release command; through the above time-division multiplexing or priority scheduling strategy, efficient coordination between the drone landing and light-tracking power generation tasks is achieved.

[0070] Furthermore, the control center 500 runs a real-time operating system and sets up two tasks: a light-tracking control task (low priority) and a drone landing control task (high priority).

[0071] When no drones are approaching, the light-tracking control task is executed periodically: reading the image from the second camera, calculating the light spot offset, and driving the three-axis rotary support stepper motor to align the photovoltaic panel 410 with the sun; when the first camera detects that a drone has entered within 5m of the platform, the control center 500 generates an interrupt signal, suspends the light-tracking control task, and immediately executes the landing control task (including model identification, speed measurement, damping preset, locking, and charging).

[0072] After the drone completes charging and takes off, the control center 500 automatically resumes its beam tracking control mission. This scheduling method ensures that landing safety always takes precedence over power generation efficiency, and requires no additional hardware.

[0073] To better understand this invention, the following is combined with... Figures 1 to 7 The technical solution of the present invention will be described in detail below: A landing platform 200 is movably mounted on the support base 100. An electromagnetic adsorption component 310 is connected to the landing platform 200 for magnetically adsorbing a rotary-wing drone. A wireless charging module 320 is connected to the electromagnetic adsorption component 310 for powering the rotary-wing drone. At least one photovoltaic panel 410 is connected to the landing platform 200 for converting solar energy into electrical energy. The converted electrical energy is temporarily stored in an energy storage battery 420 and used to power the wireless charging module 320. Compared with the prior art, by simultaneously setting the electromagnetic adsorption component 310, the wireless charging module 320, and the photovoltaic panel 410 on the landing platform 200, the drone is fixed by the electromagnetic adsorption component 310, and the solar energy is converted into electrical energy by the photovoltaic panel 410 and then used to charge the drone via the wireless charging module 320. This not only enables wireless charging of the drone, but also eliminates the need for an external power grid to provide power.

[0074] This invention can store the electrical energy generated by the photovoltaic panel 410 in the platform's built-in energy storage battery 420, providing working power for various modules of the platform (control center 500, camera, electromagnet, damper 620 drive circuit, wireless charging transmitter), and can also provide charging services for multiple drone flights. Compared with existing charging pile solutions that rely on external power grids, this invention does not require any external power access and can be independently deployed in areas without power grid coverage, such as ocean-going vessels, uninhabited islands, and remote inland river docks. It fundamentally solves the energy supply problem in drone delivery and significantly expands the application scope of drones in water transport logistics.

[0075] Furthermore, by acquiring the drone's mass and landing speed through visual recognition, the impact kinetic energy is estimated in real time, and the excitation current of the magnetorheological damper 620 is adjusted within milliseconds to precisely match the damping force with the impact kinetic energy. Compared with traditional passive buffering methods such as rubber pads or springs, this invention can reduce the peak overload transmitted to the drone landing gear by more than 50%, achieving a consistent and smooth soft landing experience, avoiding elastic oscillations or secondary rebounds of the fuselage, effectively extending the service life of the drone's airframe and landing gear, and reducing operation and maintenance costs.

[0076] Furthermore, by installing two cameras on each side of the platform to perform drone identification / speed measurement and sunspot detection tasks respectively, the two cameras work independently without time-division multiplexing, thus avoiding an increase in algorithm complexity. Compared with independently configured sensors, the integrated solution of this invention reduces the number of hardware components, lowers the total system cost, and simplifies the installation and calibration process.

[0077] Furthermore, the control center 500 centrally schedules both the drone landing and solar power generation tasks. The control center 500 monitors drone landing requests in real time. When there is no landing task, the system prioritizes solar power control to fully utilize the sunlight period to charge the energy storage battery 420. When a drone is detected approaching, the control center 500 immediately interrupts or suspends the solar power tracking action, prioritizing computing resources for drone visual recognition, kinetic energy estimation, and damping preset to ensure landing safety. After the drone lands and completes charging, the system automatically resumes the solar power tracking function. This achieves seamless switching between the two functions and avoids task conflicts or resource competition.

[0078] This application, through the aforementioned system, can solve the technical problem in the prior art where the wireless charging platforms for drones mostly rely on external power grids for power supply and cannot be deployed in water transport scenarios without power grid coverage, thus resulting in poor applicability of the charging platforms.

[0079] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A wireless charging system for unmanned aerial vehicles (UAVs) based on photovoltaic power generation, characterized in that, include: Support base; A landing platform is movably connected to the support base; The landing assembly includes an electromagnetic adsorption component and a wireless charging module. The electromagnetic adsorption component is connected to the landing platform and is used to magnetically adsorb the rotorcraft drone. The wireless charging module is connected to the electromagnetic adsorption component and is used to supply power to the rotorcraft drone. as well as The power supply component includes at least one photovoltaic panel and an energy storage battery. The photovoltaic panel is connected to the landing platform, and the energy storage battery is electrically connected to the photovoltaic panel and the wireless charging module to temporarily store the electrical energy converted by the photovoltaic panel and supply power to the wireless charging module.

2. The wireless charging system for unmanned aerial vehicles based on photovoltaic power generation according to claim 1, characterized in that, The energy supply component comprises multiple photovoltaic panels, which are arranged along the circumference of the electromagnetic adsorption component and are all connected to the landing platform. Furthermore, all of the photovoltaic panels are electrically connected to the energy storage battery.

3. The wireless charging system for unmanned aerial vehicles based on photovoltaic power generation according to claim 1, characterized in that, The photovoltaic-based drone wireless charging system also includes a buffer component, which is disposed between the landing platform and the electromagnetic adsorption component and is connected to both the landing platform and the electromagnetic adsorption component. The buffer component can generate a restoring force that pushes the electromagnetic adsorption component close to the landing platform and then automatically resets it.

4. The wireless charging system for unmanned aerial vehicles based on photovoltaic power generation according to claim 3, characterized in that, The buffer assembly includes at least one buffer member, which includes a fixed body and an elastic part. The fixed body is connected to the landing platform, and one end of the elastic part is connected to the fixed body and the other end is connected to the electromagnetic adsorption member.

5. The wireless charging system for unmanned aerial vehicles based on photovoltaic power generation according to claim 4, characterized in that, The number of buffer components is four, and the four elastic parts are evenly distributed on the four sides of the electromagnetic adsorption component.

6. The wireless charging system for unmanned aerial vehicles based on photovoltaic power generation according to claim 4, characterized in that, The buffer assembly further includes at least two dampers, each having a fixed end and a telescopic end. The fixed end of the damper is hinged to the landing platform, and the telescopic end is hinged to the electromagnetic adsorption component.

7. The wireless charging system for unmanned aerial vehicles based on photovoltaic power generation according to claim 6, characterized in that, The buffer assembly contains four dampers, which are evenly distributed at the four corners of the electromagnetic adsorption component.

8. The wireless charging system for unmanned aerial vehicles based on photovoltaic power generation according to claim 7, characterized in that, The photovoltaic-based drone wireless charging system further includes a drive assembly, which comprises a rotating body, a first drive member, and a second drive member. The rotating body is disposed between the support base and the landing platform. The first drive member is connected to both the rotating body and the landing platform and is used to drive the landing platform to rotate relative to the rotating body about an axis in a first direction. The second drive member is connected to the support base and the rotating body and is used to drive the landing platform and the rotating body to rotate relative to the support base about an axis in a second direction, wherein the second direction is perpendicular to the first direction.

9. The wireless charging system for unmanned aerial vehicles based on photovoltaic power generation according to claim 8, characterized in that, The photovoltaic-based drone wireless charging system also includes two vision acquisition units, which are distributed on both sides of the landing platform and connected to the landing platform. The two vision acquisition units are electrically connected to the first drive unit and the second drive unit, respectively.

10. The unmanned aerial vehicle wireless charging system based on photovoltaic power generation according to claim 9, characterized in that, The two vision acquisition devices are electrically connected to the multiple dampers respectively.

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