Method for detecting photovoltaic cell panel by unmanned aerial vehicle

Abstract

The invention discloses a method for detecting a photovoltaic cell panel by an unmanned aerial vehicle. The method comprises the following steps: calculating an installation angle of a photovoltaic panel; scanning the photovoltaic panel; performing perspective correction on the photovoltaic panel; performing image splicing and block numbering; and performing defect detection. In the step of photovoltaic panel scanning, the optical axes of the visible light camera and the infrared camera are inclined by an angle A of the photovoltaic panel to photograph the photovoltaic panel; the perspective correction of the photovoltaic panel is to convert the scanned inclined plane graph through a perspective transformation formula, and then obtain a front view image of the photovoltaic panel; the image splicing and block numbering are to splice the corrected images and then carry out block numbering, so that defect detection statistics can be conveniently carried out on a photovoltaic panel area; and the defect detection is to perform preprocessing and defect detection on the pictures subjected to block numbering. According to the invention, the reliability of the monitoring result is improved, the use of manpower and material resources is reduced, the cost effectiveness is improved, the external fault of the photovoltaic cell panel can be detected, and the invisible fault in the photovoltaic cell panel can also be detected.

Description

technical field [0001] The invention relates to a detection method based on an unmanned aerial vehicle, in particular to a method for detecting a photovoltaic cell panel by an unmanned aerial vehicle. Background technique [0002] Solar energy (solar energy) refers to the thermal radiation energy of the sun (see the three ways of thermal energy transmission: radiation), and its main performance is the sun's rays that are often said. In modern times, it is generally used to generate electricity or provide energy for water heaters. Since the birth of life on earth, it has mainly lived on the heat radiation energy provided by the sun. Since ancient times, humans have also known to use sunlight to dry objects and use it as a method of making food, such as making salt and drying salted fish. With fossil fuels decreasing day by day, solar energy has become an important part of human energy use and is constantly being developed. There are two ways to use solar energy: phototherma...

AI Technical Summary

Problems solved by technology

Although the above diagnostic methods can detect the faults of the photovoltaic system to a certain extent, there are still some shortcomings, such as: based on mathematical model method, it is difficult to establish a model and has large limitations; based on intelligent detection method, it depends on prior knowledge; The method is greatly disturbed by the environment; the method based on the monitoring system is only suitable for large-scale photovoltaic systems, the cost is high, and the internal faults of the system cannot be detected

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