Studies On UAV-borne Visible Infrared Photovoltaic Modules Hotsopt Detection System

With the vigorous development of photovoltaic power plants at home and abroad,the maintenance of photovoltaic modules is very important.The hot spot problem of photovoltaic panels,as the main cause of photovoltaic modules,will require huge amounts of maintenance.Aiming at the problems of high cost and low efficiency of traditional hot spot detection methods,this paper proposes a relatively new hot spot detection technology solution equipped with visible and infrared coaxial dual cameras and using a dual-axis stable platform to realize staring imaging of stop and stop.Among them,the dual-axis stable platform pendulum staring imaging technology is based on the optical machine scanning and stable platform control technology that the research team has accumulated for many years,and has developed an efficient unmanned airborne photovoltaic panel hot spot detection inspection method.By using this technical solution to obtain images,and then combined with the infrared visible image composite judgment method,it can efficiently and conveniently complete the hot spot detection task of photovoltaic panels.In this paper,a set of photovoltaic panel hot spot detection system with multi-rotor unmanned aerial vehicle as carrier,coaxial visible light camera and infrared camera as payload is developed.The system indirectly calls the new PTZ built-in control algorithm to realize the key technology of high-efficiency hot spot inspection—large field of view staring imaging.The system integrates PTZ control,image acquisition,storage,GPS data acquisition and recording function modules.After multiple joint tuning and experiments to eliminate the faults one by one,the system is enough to meet the needs of photovoltaic panel hot spot detection tasks.The results of this paper are as follows:(1)Research and analyze various types of photovoltaic panel hot spot detection technology.Based on the current situation of the photovoltaic industry and the development of electronic science and technology,a novel novel dual camera equipped with visible and infrared coaxial cameras and the use of dual axis stabilization are proposed for the first time.The platform implements a hot spot detection technology solution for swing staring imaging.(2)In-depth research and summary introduced the photo-mechanical scanning and stabilization platform control technology accumulated by the research team for many years,and inspired by this,a large field of view “swing-stop” scanning area array gaze imaging based on the “stable pan / tilt” design was introduced.Technical solutions.(3)According to the design goals of the system,and based on the horizontal comparison of the technical parameters of various commercial products,this article selects suitable system components and develops a set of unmanned airborne visible infrared dual-channel hot spot detection systems.The indirect call of the built-in control algorithm of the platform realizes the large field of view staring imaging function.(4)Performed static joint tuning,dynamic joint tuning,and quasi-scene flight experiments on the developed system,and checked and improved system failures one by one.Finally,a photovoltaic power plant flight test was performed,and a visible infrared image sufficient to meet the needs of the photovoltaic panel hot spot detection task was obtained..(5)Image registration of visible and infrared images was performed to demonstrate the feasibility of conventional image registration methods based on SIFT and RANSAC.Finally,parallel light tubes were used to complete the registration of pixels in the visible infrared dual-channel image..