Distributed photovoltaic panel high-power intelligent laser cleaning unmanned aerial vehicle

Abstract

A distributed photovoltaic panel high-power intelligent laser cleaning unmanned aerial vehicle relates to the field of unmanned aerial vehicle cleaning and comprises an unmanned aerial vehicle body, an airborne laser, a nozzle base, a lens group, a cable and a roadbed laser generator and power supply. The roadbed laser generator and power supply is fixed on the ground, is connected with the unmanned aerial vehicle body through a cable, and is used for transmitting high-power laser to the unmanned aerial vehicle and providing power; the unmanned aerial vehicle body carries an airborne laser and is connected to the laser nozzle through a nozzle base and a lens group; the unmanned aerial vehicle body is provided with a two-degree-of-freedom holder mechanism which is used for driving the laser nozzle to rotate in a two-dimensional plane; an airborne camera is installed at the front end of the unmanned aerial vehicle body and used for recognizing stains on the surface of the photovoltaic panel in real time. The load of the unmanned aerial vehicle is greatly reduced, the endurance is improved, and the operation time is prolonged. Non-contact laser cleaning is adopted, and by controlling the laser energy density and the scanning mode, dirt can be removed, damage to a base material can be avoided, and the device is particularly suitable for cleaning operation of photovoltaic panels.

Description

Technical Field

[0001] The present invention relates to the field of drone cleaning, and in particular to a distributed photovoltaic panel high-power intelligent laser cleaning drone. Background Art

[0002] Laser cleaning technology refers to a process in which high-energy laser beams are used to irradiate the surface of a workpiece, causing dirt, rust or coating on the surface to evaporate or peel off instantly, thereby quickly and effectively removing surface attachments or surface coatings on the cleaning object, thereby achieving a clean process.

[0003] The type of dust on photovoltaic panels varies depending on the actual environment. Using other dust removal methods to completely remove dust requires developing different cleaning plans, which consumes more time and resources and is costly. Laser cleaning, on the other hand, can avoid incomplete cleaning due to different types of dust and is more environmentally friendly. However, existing drone laser cleaning of photovoltaic panels usually works by low-power laser irradiation, that is, a small laser generator is mounted on the drone, and the stains are removed by laser irradiation. This method of using a small laser generator onboard the drone to generate laser for cleaning has its drawbacks. Since laser generators are generally large in mass and the laser power generated by the laser generator is too low, this cleaning method has the problem of not being able to thoroughly clean due to the low laser power and the drone being unable to operate for long periods of time due to its heavy load. Summary of the Invention

[0004] The present invention aims to address the existing problems of insufficient laser power for thorough cleaning and the inability of drones to operate for extended periods due to excessive loads, by providing a high-power, intelligent laser cleaning drone for distributed photovoltaic panels. The present invention incorporates a roadbed laser generator and power supply external to the drone, significantly reducing the drone's load while improving its endurance and extending its operating time. The drone utilizes non-contact laser cleaning technology, which effectively removes surface dirt while avoiding damage to the substrate by controlling the laser energy density and scanning pattern. This makes it particularly suitable for cleaning photovoltaic panels.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] Distributed photovoltaic panel high-power intelligent laser cleaning drone, including drone body, airborne laser, nozzle base and lens group, cables, roadbed laser generator and power supply;

[0007] The roadbed laser generator and power supply is fixed to the ground and connected to the UAV body via the cable. The cable includes an optical fiber and a power line for transmitting high-power laser to the UAV and providing power.

[0008] The UAV body is equipped with an airborne laser, which is connected to the laser nozzle through a nozzle base and a lens assembly;

[0009] The drone body is provided with a dual-degree-of-freedom pan-tilt mechanism, including pan-tilt motor 1 and pan-tilt motor 2, which cooperate to drive the laser nozzle to rotate in a two-dimensional plane through a pan-tilt bracket;

[0010] An airborne camera is installed at the front end of the drone body for real-time identification of stains on the surface of the photovoltaic panel.

[0011] The airborne laser serves as a pre-cleaning unit, with a power lower than that of the roadbed laser generator, and is used to perform preliminary cleaning of stains before high-power laser cleaning.

[0012] In the dual-degree-of-freedom pan-tilt mechanism, pan-tilt motor 1 drives the laser nozzle to rotate in the horizontal plane to cover the horizontal area, and pan-tilt motor 2 drives the laser nozzle to rotate in the vertical plane to cover the longitudinal area, and the two movement directions are perpendicular to each other.

[0013] The nozzle base and the lens group are built with a precision lens system for focusing the laser beam to the target stain area.

[0014] The present invention also includes an intelligent control system that dynamically adjusts the scanning angle of the laser nozzle, the output power and the scanning speed of the roadbed laser generator according to the stain distribution data collected by the onboard camera.

[0015] The intelligent control system configuration includes: 1) generating a cleaning strategy based on the stain area and thickness; 2) real-time monitoring of cleaning residue and dynamic adjustment of laser power; 3) associating with the drone's battery status and triggering automatic return when the battery level falls below a threshold.

[0016] The drone body integrates an environmental perception and obstacle avoidance module, and autonomously plans the flight path based on the onboard camera data.

[0017] The cable is a composite cable, wherein the optical fiber transmits the laser generated by the roadbed laser generator, and the power line is used to transmit electrical energy.

[0018] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0019] The drone laser cleaning equipment of the present invention uses a high-power laser generated by a road-based laser generator to clean solar photovoltaic panels, effectively solving the problem of incomplete cleaning caused by insufficient laser power in traditional laser cleaning drones. At the same time, the drone of the present invention places the road-based laser generator on the ground and connects it to the drone via optical fiber, which greatly reduces the load of the drone, thereby extending the operating time and operating range of the drone and improving operating efficiency. In addition, the drone is equipped with an airborne laser, and its good flexibility and high precision make the drone perform well in preliminary cleaning and edge refinement, further improving the overall cleaning effect. The drone of the present invention also introduces an intelligent control system, which can intelligently adjust the output power of the laser and the cleaning strategy according to the degree and distribution of stains on the surface of the photovoltaic panel, to achieve efficient and accurate cleaning, avoid energy waste and damage to the surface of the photovoltaic panel; and the intelligent control system also monitors the parameters such as the flight status and power status of the drone in real time to ensure the safety and continuity of the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the structural diagrams of the present invention;

[0021] Figure 2 This is the second structural diagram of the present invention;

[0022] Figure 3 Schematic diagram of the operation of the UAV of the present invention.

[0023] Figure 1: UAV body, 2: airborne laser, 3: nozzle base and lens group, 4: cable, 5: roadbed laser generator and power supply, 6: gimbal motor 2, 7: airborne camera, 8: gimbal bracket, 9: upper loading plate, 10: lower loading plate, 11: gimbal motor 1, 12: laser nozzle. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Example 1

[0026] See also Figures 1-3 The distributed photovoltaic panel high-power intelligent laser cleaning drone of this embodiment includes a drone body (1), an airborne laser (2), a nozzle base and lens group (3), a cable (4), and a roadbed laser generator and power supply (5);

[0027] The roadbed laser generator and power supply (5) is fixed to the ground and connected to the UAV body (1) via the cable (4), wherein the cable (4) comprises an optical fiber and a power line, and is used to transmit high-power laser light to the UAV and provide power. Specifically, the cable (4) is a composite cable, wherein the optical fiber transmits the laser light generated by the roadbed laser generator and power supply (5), and the power line transmits electrical energy.

[0028] The drone body (1) carries an airborne laser (2), and the airborne laser (2) is connected to a laser nozzle (12) via a nozzle base and a lens group (3), and the laser beam is accurately guided via the nozzle base and the lens group (3);

[0029] The UAV body (1) is provided with a dual-degree-of-freedom pan-tilt mechanism, comprising a pan-tilt motor 1 (11) and a pan-tilt motor 2 (6), which cooperate to drive the laser nozzle (12) to rotate in a two-dimensional plane through a pan-tilt bracket (8);

[0030] An onboard camera (7) is installed at the front end of the drone body (1) for real-time identification of stains on the surface of the photovoltaic panel.

[0031] The airborne laser (2) serves as a pre-cleaning unit, has a power lower than that of the roadbed laser generator, and is used to preliminarily clean stains on the surface of the photovoltaic panel before high-power laser cleaning.

[0032] In the dual-degree-of-freedom pan-tilt mechanism, pan-tilt motor 1 (11) drives the laser nozzle (12) to rotate in a horizontal plane to cover a horizontal area, and pan-tilt motor 2 (6) drives the laser nozzle (12) to rotate in a vertical plane to cover a longitudinal area, and the two movement directions are perpendicular to each other.

[0033] The nozzle base and the lens group (3) are built with a precision lens system for focusing the laser beam onto the target stain area.

[0034] In this embodiment, the road-based laser generator and the airborne laser are connected in parallel using dual optical paths to achieve connection with the nozzle base and lens group (3) of the same group. Specifically, a fiber coupler is installed at the optical fiber terminal of the cable (4) to merge the two laser paths into one optical fiber, which is then transmitted to the nozzle base; switching between different lasers is achieved through a mechanical switching mechanism, which is a movable reflective prism at the front end of the lens group. When the airborne laser is required, the reflector moves away to allow the airborne laser to pass directly; when the road-based laser is required, the reflector cuts in to reflect the light path output by the road-based laser fiber into the lens group, while also blocking the entry of the airborne laser.

[0035] The working principle of the present invention is as follows:

[0036] The airborne laser (2) accurately guides the laser beam through the nozzle base and the lens group (3), ensuring that the laser can be efficiently focused on the target photovoltaic panel surface. The cable (4) serves as a connecting bridge, tightly connecting the drone body (1) with the external roadbed laser generator and power supply (5). The external fixed roadbed laser generator not only provides high-power laser energy, but also greatly reduces the load of the drone and extends the operation time of the drone. The top of the drone body (1) is installed with the pan-tilt motor 2 (6) and the pan-tilt bracket (8), which together support the upper loading plate (9), and the upper loading plate (9) is fixed with the airborne camera (7) and the laser nozzle (12). The laser nozzle (12) can realize flexible rotation in a two-dimensional plane under the coordinated drive of the pan-tilt motor 1 (11) and the pan-tilt motor 2 (6), ensuring that the laser beam can cover and accurately clean every corner of the photovoltaic panel. The lower loading plate (10) is used to stabilize the overall structure of the drone and enhance flight stability. Figure 3 When the drone is performing operations, when the onboard camera (7) identifies stains on the photovoltaic panel, the control system is immediately activated and begins to analyze the operation plan based on the identified stains. When cleaning begins, the onboard laser (2) is pre-activated to perform preliminary cleaning of the stains in preparation for subsequent high-power laser cleaning; then, the high-power laser generated by the roadbed laser generator is transmitted to the nozzle base and lens group (3) through the optical fiber, and accurately emitted through the laser nozzle (12). The pan-tilt motor 1 (11) and pan-tilt motor 2 (6) adjust the angle and scanning speed of the laser nozzle (12) according to the preset program or real-time image recognition results to ensure that the laser beam evenly and efficiently covers the entire area to be cleaned. At the same time, the onboard camera (7) continuously transmits recognition data and monitors the operation process in real time to ensure the safety and continuity of the operation.

[0037] Example 2

[0038] This embodiment further includes an intelligent control system based on the embodiment 1, which dynamically adjusts the scanning angle of the laser nozzle (12), the output power of the roadbed laser generator and the scanning speed according to the stain distribution data collected by the airborne camera (7).

[0039] The intelligent control system is configured to: 1) generate a cleaning strategy based on the stain area and thickness; 2) monitor the cleaning residue in real time and dynamically adjust the laser power; and 3) associate it with the drone's battery status and trigger automatic return when the battery level falls below a threshold.

[0040] The drone body (1) integrates an environmental perception and obstacle avoidance module, and autonomously plans a flight path in combination with data from an onboard camera (7), thereby enabling autonomous planning of safe flight in complex and changeable outdoor environments.

[0041] Specifically, when the drone goes to the photovoltaic panel for operation, the intelligent control system will receive the data identified by the onboard camera (7) and perform path planning and flight obstacle avoidance. When the drone starts real-time cleaning, the onboard camera (7) transmits the identified photovoltaic panel stain data back to the intelligent control system, which analyzes the area and thickness of the stain on the photovoltaic panel and formulates a cleaning plan. After formulating the plan, the laser nozzle covers the cleaning area by controlling the pan-tilt motor 1 (11) and pan-tilt motor 2 (6). For the stains on the same photovoltaic panel, the intelligent control system will also analyze the residual degree in real time and adjust the output laser intensity by controlling the roadbed laser generator to ensure energy-saving and efficient cleaning operations. The intelligent control system is also connected to the drone battery. When the drone battery is low, it will alarm and automatically return to the home position to prevent the drone from suffering additional losses due to insufficient power, thereby ensuring the continuity and safety of the operation.

[0042] This invention utilizes laser cleaning technology to effectively remove different types of dust from photovoltaic panels, saving cleaning costs. The invention also places the roadbed laser generator externally on the ground. While providing high-power laser light, it also prevents the drone from being overloaded and unable to operate for extended periods when cleaning the photovoltaic panels. The external roadbed laser generator also provides high-power laser light, which is transmitted to the drone via a cable and then conducted to the laser nozzle by the nozzle base and lens assembly, ultimately cleaning the photovoltaic panel surface. This solves the problem of conventional laser cleaning drones being underpowered and unable to thoroughly clean, making cleaning operations efficient and stable.

Claims

1. Distributed photovoltaic panel high-power intelligent laser cleaning drone, characterized by: The invention comprises an unmanned aerial vehicle (UAV) body, an airborne laser, a nozzle base and lens group, a cable, and a roadbed laser generator and power supply. The roadbed laser generator and power supply is fixed to the ground and connected to the UAV body via the cable. The cable comprises an optical fiber and a power cord for transmitting high-power laser to the UAV and providing power. The UAV body is equipped with an airborne laser, which is connected to the laser nozzle via the nozzle base and the lens group. The UAV body is provided with a dual-degree-of-freedom pan-tilt mechanism, comprising a pan-tilt motor 1 and a pan-tilt motor 2, which cooperate to drive the laser nozzle to rotate in a two-dimensional plane via a pan-tilt bracket. An airborne camera is installed at the front end of the UAV body for real-time identification of stains on the surface of the photovoltaic panel.

2. The distributed photovoltaic panel high-power intelligent laser cleaning drone according to claim 1, characterized in that: The airborne laser serves as a pre-cleaning unit, with a power lower than that of the roadbed laser generator, and is used to perform preliminary cleaning of stains before high-power laser cleaning.

3. The distributed photovoltaic panel high-power intelligent laser cleaning drone according to claim 1, characterized in that: In the dual-degree-of-freedom pan-tilt mechanism, pan-tilt motor 1 drives the laser nozzle to rotate in the horizontal plane to cover the horizontal area, and pan-tilt motor 2 drives the laser nozzle to rotate in the vertical plane to cover the longitudinal area, and the two movement directions are perpendicular to each other.

4. The distributed photovoltaic panel high-power intelligent laser cleaning drone according to claim 1, characterized in that: The nozzle base and the lens group are built with a precision lens system for focusing the laser beam to the target stain area.

5. The distributed photovoltaic panel high-power intelligent laser cleaning drone according to claim 1, characterized in that: It also includes an intelligent control system that dynamically adjusts the scanning angle of the laser nozzle, the output power of the roadbed laser generator and the scanning speed based on the stain distribution data collected by the onboard camera.

6. The distributed photovoltaic panel high-power intelligent laser cleaning drone according to claim 5, characterized in that: The intelligent control system configuration includes: 1) generating a cleaning strategy based on the stain area and thickness; 2) real-time monitoring of cleaning residue and dynamic adjustment of laser power; 3) associating with the drone's battery status and triggering automatic return when the battery level falls below a threshold.

7. The distributed photovoltaic panel high-power intelligent laser cleaning drone according to claim 1, characterized in that: The drone body integrates an environmental perception and obstacle avoidance module, and autonomously plans the flight path based on the onboard camera data.

8. The distributed photovoltaic panel high-power intelligent laser cleaning drone according to claim 1, characterized in that: The cable is a composite cable, wherein the optical fiber transmits the laser generated by the roadbed laser generator, and the power line is used to transmit electrical energy.

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