CN115409760A - System and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology - Google Patents

Abstract

The invention discloses a photovoltaic solar panel hot spot detection system and method based on an unmanned aerial vehicle aerial photography technology. The unmanned aerial vehicle comprises a system control module, an unmanned aerial vehicle automatic task module and a digital aerial camera module; the digital aerial camera module comprises an infrared camera and an aerial camera; the ground end comprises a video processing module which is connected with the digital aerial photography module. The method is characterized by comprising the following steps: planning a UAV flight path, setting a temperature threshold of an infrared camera, flying perpendicular to the photovoltaic solar panel, aerial-shooting by the infrared camera, downloading an infrared video to a ground-side video server in real time, and meanwhile judging whether the temperature of the photovoltaic solar panel is larger than or equal to a preset temperature value or not; if so, marking the latitude and longitude of the hot spot, the detection time and other information on the corresponding video image position. According to the invention, the hot spot of the photovoltaic solar panel can be repaired in time.

Description

System and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology

technical field

The present invention relates to the fields of UAV application, visual recognition/pattern recognition technology, and hot spot detection technology, and in particular to a system and method for hot spot detection of photovoltaic solar panels based on UAV aerial photography technology.

Background technique

The English abbreviation included in the present invention is as follows:

UAV: Unmanned Aerial Vehicles

IMU: Inertial measurement unit Inertial measurement unit

GPS: Global Positioning System Global Positioning System

UCS: UAV Control System UAV Control System

GCS: Ground Control Station ground control station

DEM: Digital Elevation Model digital elevation model

DOM: Digital Orthophoto Map digital orthophoto map

DSM: Digital Surface Model digital surface model

During the long-term use of photovoltaic solar panels, it is inevitable that there will be shelters such as bird excrement, floating soil, and fallen leaves, which form shadows on photovoltaic solar panels. Due to the existence of partial shading, the current and voltage of some cells in the photovoltaic solar panel have changed. As a result, the product of the local current and voltage of the photovoltaic solar panel increases, and the local temperature of the photovoltaic solar panel rises. This phenomenon is called "hot spot". The occurrence of hot spot phenomenon has certain damage to photovoltaic solar panels, so it is necessary to detect photovoltaic solar panels with hot spot phenomenon in time through patrol inspection. At present, most photovoltaic solar panels are manually inspected, and the workload of manual inspection is relatively large, and the inspection efficiency is also low, so that hot spot detection of photovoltaic solar panels cannot be carried out in a timely and effective manner.

In response to the above problems, many improvements have been made in the prior art. For example, the Chinese patent application No. 201710046412.2 discloses a method and system for hot spot detection of photovoltaic modules. The image acquisition device installed on the drone collects photovoltaic A plurality of images of photovoltaic modules in the area to be inspected in the power station, the above images at least include infrared images; the image processing device acquires the above images, performs image stitching on the above images, obtains a panoramic image of the area to be inspected, and performs thermal processing on the above panoramic images spot detection, get the detection result. The image of the photovoltaic module of the photovoltaic power station is collected by the image acquisition device on the UAV, that is, the UAV is used to inspect the photovoltaic power station, and then the image of the photovoltaic module is processed by image processing technology to complete the hot spot detection. However, the invention patent requires splicing images, and it is likely that real-time detection cannot be achieved.

Contents of the invention

In order to overcome the defects in the prior art, the present invention provides a system and method for hot spot detection of photovoltaic solar panels based on unmanned aerial vehicle technology, so as to timely understand the hot spots generated by photovoltaic solar panels and repair them in time.

A system and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology, the system includes a drone management system and a ground terminal.

The unmanned aerial vehicle management system is responsible for the mission assignment and logistics work of the unmanned aerial vehicle, including the unmanned aerial vehicle.

The ground terminal includes a video processing module, a control module and a communication module.

Further, the unmanned aerial vehicle includes a system control module, an unmanned aerial vehicle automatic mission module, a digital aerial camera module and a communication module; The communication modules are connected to each other.

Further, the system control module receives the control commands and data sent by the ground terminal (such as the ground mobile terminal), and outputs control commands to the UAV actuator after calculation and processing.

Further, the UAV automatic task module automatically generates various flight routes for the UAV, and in addition, the UAV can also be manually controlled.

Further, the digital aerial camera module includes an infrared camera and an aerial camera.

Further, the communication module is responsible for the wireless communication between the UAV and the ground terminal, for example, the real-time transmission of the aerial video/picture of the UAV to the ground terminal, and the flight control instructions of the ground terminal are sent to the UAV in real time. System control module, etc.

Further, the video processing module receives in real time the infrared video of the photovoltaic solar panel and other videos used as visual control delivered by the digital aerial photography module.

Further, the control module is responsible for the control of the entire flight process of the UAV, such as take-off, air flight, mission execution, and return recovery. This module can be deployed or not deployed according to the actual situation.

Further, the communication module is responsible for wireless communication between the ground terminal and the drone, for example, the ground terminal receives the aerial video/picture of the drone in real time, and sends flight control instructions to the system control module of the drone, etc. .

Further, the infrared camera is responsible for taking aerial photos of photovoltaic solar panels, and downloading infrared video to the ground end in real time; meanwhile, detecting the temperature of photovoltaic solar panels.

Further, the aerial camera is responsible for visual control.

Furthermore, by using a mobile terminal or computer, through the video server, you can browse information such as the location of the hot spot on the photovoltaic solar panel and the detection time, and notify relevant personnel in time to repair it.

A system and method for hot spot detection of photovoltaic solar panels based on unmanned aerial vehicle technology, the method is characterized in that it includes the following steps:

(1) Plan UAV flight path;

(2) Set the temperature threshold of the infrared camera;

(3) Fly perpendicular to the photovoltaic solar panel;

(4) Infrared camera aerial photography and real-time download to the ground-side video server, while judging whether the temperature of the photovoltaic solar panel is ≥ the preset temperature value

(5) If so, the infrared camera will mark the latitude, longitude, and detection time of the hot spot on the corresponding image position.

Ground-end terminals, such as mobile terminals and computers, can access the video server through the wireless network, and timely query the location of the thermal shift of the photovoltaic solar panel (expressed in longitude and latitude) and detection time information for timely repair.

A system and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology, including drones and ground terminals. The unmanned aerial vehicle includes a system control module, an automatic mission module of the unmanned aerial vehicle, and a digital aerial photography module; the digital aerial photography module includes an infrared camera and an aerial camera; the ground terminal includes a video processing module, and the The digital aerial camera module is connected. The method is characterized in that it includes the steps of: planning the flight path of the UAV, setting the temperature threshold of the infrared camera, flying perpendicular to the photovoltaic solar panel, taking the aerial photography of the infrared camera and downloading the infrared video to the ground-side video server in real time, and simultaneously judging the photovoltaic solar energy Whether the plate temperature is greater than or equal to the preset temperature value; if so, mark the latitude and longitude of the hot spot on the corresponding video image position, as well as the detection time and other information. Through the invention, the thermal shift of the photovoltaic solar panel can be repaired in time.

Description of drawings

Fig. 1 is a schematic framework diagram of the system and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology according to the present invention.

Fig. 2 is a schematic diagram of module functions of the system and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology according to the present invention.

Fig. 3 is a schematic flow chart of the system and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology according to the present invention.

Detailed ways

Below is further detailed description of the present invention according to accompanying drawing and example:

Fig. 1 is a schematic framework diagram of the system and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology according to the present invention. The system includes a UAV management system 150 and a ground terminal 160 .

The UAV management system 150 is responsible for the assignment and logistics of the UAV 170 , including the UAV 170 .

The ground terminal 160 includes a video server 160 .

Fig. 2 is a schematic diagram of module functions of the system and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology according to the present invention.

The unmanned aerial vehicle 170 includes a system control module 110, an unmanned aerial vehicle automatic task module 120, a digital aerial camera module 130 and a communication module 140; The camera module 130 and the communication module 140 are connected to each other.

The ground terminal 160 includes a video processing module 210 , a control module 208 and a communication module 140 .

Further, the system control module 110 receives the control commands and data sent by the ground terminal (such as the ground mobile terminal), and outputs control commands to the UAV executive mechanism after calculation and processing.

Further, the UAV automatic mission module 120 automatically generates various flight routes for the UAV, and in addition, the UAV can also be manually controlled.

Further, the digital aerial camera module 130 (or aerial camera 171 ) includes an infrared camera 175 and an aerial camera 180 .

Further, the communication module 140 is responsible for the wireless communication between the drone and the ground terminal, for example, the real-time transmission of the infrared video/picture taken by the drone to the ground terminal, and the flight control instructions of the ground terminal are sent to the unmanned terminal in real time. The system control module of the machine, etc.

Further, the video processing module 210 receives in real time the infrared video of the photovoltaic solar panel and other videos for visual control sent by the digital aerial photography module 130 .

Further, the control module 208 is responsible for controlling the entire flight process of the UAV, such as take-off, air flight, mission execution, and return recovery. This module can be deployed or not deployed according to the actual situation.

Further, the communication module 140 is responsible for wireless communication between the ground terminal 160 and the drone, for example, the ground terminal 160 receives the aerial infrared video/picture and other videos of the drone in real time, and sends flight control instructions to the drone. Man-machine system control module, etc.

Further, the infrared camera 175 is responsible for taking aerial photos of photovoltaic solar panels, and downloading infrared video to the ground end in real time; meanwhile, detecting the temperature of photovoltaic solar panels.

Further, the aerial camera 180 is responsible for visual control.

Further, by using a mobile terminal or a computer, through the video server, you can browse hot spots and other locations on the photovoltaic solar panel, and notify relevant personnel in time to repair them.

Fig. 3 is a schematic flow chart of the system and method for hot spot detection of photovoltaic solar panels based on drone aerial photography technology according to the present invention. The method is characterized in that it comprises the steps of:

(1) Planning UAV flight path 311

(2) Set the temperature threshold of the infrared camera 321

(3) Fly 331 perpendicular to the photovoltaic solar panel

(4) Infrared camera aerial photography and real-time download to the ground video server, while judging whether the temperature of the photovoltaic solar panel is ≥ preset temperature value 341

(5) If yes, the infrared camera marks information 351 such as the latitude, longitude, and detection time of the hot spot on the corresponding image position.

Terminals on the ground, such as mobile terminals and computers, can access the video server through the wireless network, and timely query the location of the hot shift of photovoltaic solar panels (expressed in longitude and latitude) and detection time information, so as to make timely repairs and reduce losses.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the implementation scope of the present invention; all equivalent changes and modifications made according to the present invention are considered to be covered by the patent scope of the present invention.

Claims (16)

1. The invention provides a system and a method for detecting hot spots of a photovoltaic solar panel based on an unmanned aerial vehicle aerial photography technology.

2. The unmanned aerial vehicle aerial photography based photovoltaic solar panel hot spot detection system and method of claim 1, the unmanned aerial vehicle management system responsible for flight mission assignment and logistics of unmanned aerial vehicles, including unmanned aerial vehicles.

3. The unmanned aerial vehicle aerial photography technology-based photovoltaic solar panel hot spot detection system and method of claim 1, the ground end comprising a video processing module, a control module, and a communication module.

4. The system and method for unmanned aerial vehicle aerial photography based photovoltaic solar panel hot spot detection as claimed in claim 2, the unmanned aerial vehicle comprising a system control module, an unmanned aerial vehicle automatic task module, a digital aerial vehicle module and a communication module; and the system control module is respectively connected with the unmanned aerial vehicle automatic task module, the digital aerial camera module and the communication module.

5. The unmanned aerial vehicle aerial photography technology-based photovoltaic solar panel hot spot detection system and method of claim 1, the ground end comprising a video processing module, a control module, and a communication module.

6. The system and the method for detecting the hot spot of the photovoltaic solar panel based on the unmanned aerial vehicle aerial photography technology as claimed in claim 4, wherein the system control module receives the control command and the data sent by the ground terminal (such as a ground mobile terminal), and outputs the control command to the unmanned aerial vehicle actuator after calculation processing.

7. The UAV based aerial photography PV solar panel hotspot detection system and method of claim 4, wherein the UAV automatic mission module automatically generates various flight paths for the UAV, and further wherein the UAV may be manually operated.

8. The unmanned aerial vehicle aerial photography based photovoltaic solar panel hot spot detection system and method of claim 4, the digital aerial camera module comprising an infrared camera, an aerial camera.

9. The system and method for unmanned aerial vehicle aerial photography based photovoltaic solar panel hot spot detection as claimed in claim 4, wherein the communication module is responsible for wireless communication between the unmanned aerial vehicle and the ground end, for example, real-time transmission of aerial video/pictures of the unmanned aerial vehicle to the ground end, real-time transmission of flight control instructions of the ground end to a system control module of the unmanned aerial vehicle, and the like.

10. The unmanned aerial vehicle aerial photography based photovoltaic solar panel hot spot detection system and method as claimed in claim 3, wherein the video processing module receives in real time the infrared video of the photovoltaic solar panel and other video as visual control sent by the digital aerial photography module.

11. The system and the method for detecting the hot spot of the photovoltaic solar panel based on the unmanned aerial vehicle aerial photography technology as claimed in claim 3, wherein the control module is responsible for controlling the whole flight process of the unmanned aerial vehicle such as takeoff, air flight, task execution, return recovery and the like, and the module can be selectively deployed or undeployed according to actual conditions.

12. The system and method for unmanned aerial vehicle aerial photography based photovoltaic solar panel hot spot detection as claimed in claim 3, the communication module is responsible for wireless communication between the ground end and the unmanned aerial vehicle, for example, the ground end receives aerial video/pictures of the unmanned aerial vehicle in real time, and sends flight control instructions to the system control module of the unmanned aerial vehicle, and the like.

13. The unmanned aerial vehicle aerial photography based photovoltaic solar panel hot spot detection system and method of claim 8, the infrared camera responsible for aerial photography of the photovoltaic solar panel and downloading the infrared video to the ground end in real time; meanwhile, the temperature of the photovoltaic solar panel is detected.

14. The unmanned aerial vehicle aerial photography based photovoltaic solar panel hot spot detection system and method of claim 8, the aerial camera responsible for vision control.

15. The unmanned aerial vehicle aerial photography technology based photovoltaic solar panel hot spot detection system and method of claim 8, the method comprising the steps of:

(1) Planning UAV flight path

(2) Setting temperature threshold of infrared camera

(3) Perpendicular to the flight of photovoltaic solar panels

(4) The infrared camera takes aerial photographs and downloads the aerial photographs to the ground-end video server in real time, and meanwhile, whether the temperature of the photovoltaic solar panel is larger than or equal to a preset temperature value or not is judged

(5) If so, the infrared camera marks the latitude, longitude, detection time and other information of the hot spot on the corresponding image position.

16. The drone-based aerial photography photovoltaic solar panel hotspot detection system and method of claim 15, the ground-end terminals, such as mobile terminals and computers, can access the video server through the wireless network, query the location of the hot spot of the photovoltaic solar panel (in terms of longitude and latitude) and detection time information in time for timely remediation.

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