Photovoltaic power plants are exposed to complex environments such as sun exposure, rain, sandstorms, and humidity all year round. There are numerous thermal hazards such as component hot spots, loose MC4 connectors causing heat generation, cable overload in combiner boxes, heating of inverter power devices, and poor grounding of brackets. This type of fault initially manifests as a small local temperature difference that cannot be recognized by the naked eye. If left unchecked for a long time, it can cause component burnout, line short circuits, and in severe cases, power plant fires, resulting in huge equipment property losses and power generation revenue losses. Traditional ordinary temperature measuring guns can only measure temperature at a single point and cannot visually present temperature distribution. Low end infrared devices have insufficient resolution and poor ability to capture small temperature differences, resulting in frequent missed detections and misjudgments, making it difficult to meet the preventive operation and maintenance needs of large-scale power plants. Suzhou Laikesi New Energy Technology Co., Ltd. (LAILX) is deeply involved in the field of photovoltaic safety testing. It has launched the LX-F200 handheld infrared thermal imaging device, which is equipped with a 640 × 480 high-definition infrared detector, 0.05 ℃ high-sensitivity temperature difference recognition, and photovoltaic exclusive temperature measurement algorithm. The integrated handheld portable design enables quick troubleshooting of thermal faults in components, electrical equipment, and cables in one stop, making it a universal safety testing tool for photovoltaic operation and maintenance, power inspection, and industrial equipment temperature measurement. Compact, portable, precise imaging

The LX-F200 is equipped with a high-end non cooled infrared focal plane detector in the industry, with infrared pixels of 640 × 480 and a total of 307200 temperature measurement points. Compared with the 320 × 240 basic model, the imaging clarity is four times higher, and it can fully display the subtle temperature gradient changes of photovoltaic modules, accurately capture the small temperature difference of 0.05 ℃, and even the hidden dangers such as small heat spots inside the module, abnormal temperature rise at a few tenths of a degree of wiring terminal, and local aging and heating of cables can be clearly imaged, achieving "one eye positioning and precise quantification" of fault points. The temperature measurement range of the device supports dual level intelligent switching, with a basic range covering -20 ℃ to 120 ℃, suitable for temperature measurement of photovoltaic modules, wiring terminals, and brackets at room temperature; High temperature range from 0 ℃ to 650 ℃, capable of detecting high-temperature electrical equipment such as inverters, transformers, and distribution cabinets, catering to both photovoltaic scenarios and general industrial temperature measurement needs. The temperature measurement accuracy is stably controlled at ± 2 ℃ or ± 2% reading (whichever is larger), and the temperature measurement data has reliable quantitative reference value. The operation and maintenance personnel can judge the severity level of the fault based on the temperature difference, distinguish between minor poor contact and high-risk overheating faults, and plan maintenance priorities reasonably.

Specially optimized multiple core functions for photovoltaic detection scenarios, significantly improving the efficiency of fault diagnosis. The device is equipped with MAGICTHERM image detail enhancement algorithm, which optimizes the display effect of thermal image edges and low temperature difference areas. It can still clearly distinguish temperature boundaries under strong light, backlight, and long-distance shooting conditions. Outdoor noon strong light inspection does not require shading auxiliary equipment. Equipped with full screen temperature rise automatic calculation function, the system automatically calculates the highest temperature, lowest temperature, average temperature, and maximum temperature rise within the screen, automatically marks the over temperature points, and does not require manual temperature measurement. The scanning time of a single photovoltaic array is compressed to tens of seconds. Built in photovoltaic dedicated color palette mode, adapted to the thermal imaging observation habits of photovoltaic modules, highlighting high-temperature hot spot areas, quickly distinguishing between normal power generation areas and fault heating areas; Simultaneously supporting multiple measurement modes such as isotherm, center point temperature measurement, regional temperature measurement, and temperature difference comparison, to meet the requirements of fault depth analysis. The device is equipped with a built-in GPS positioning module, which automatically records the geographical coordinates of the fault location by taking thermal imaging photos. Maintenance personnel can quickly reach the fault area based on the positioning, reducing the time and cost of searching for the fault location in the power station.

Ergonomic handheld integrated design suitable for long-term outdoor inspection operations. The whole machine adopts an anti slip rubber gun style grip, which can be easily held and operated with one hand. The body is lightweight, and there is no obvious fatigue feeling after continuous handheld inspection for several hours; Equipped with a 3.5-inch high-definition high brightness touch display screen, visible in strong outdoor light, paired with physical function buttons, and can be operated smoothly even with protective gloves. The overall protection level of the machine is IP65, waterproof, dustproof, and anti drop. It can withstand outdoor rainfall, dust, and high-altitude drops and bumps, and is suitable for various harsh operation and maintenance environments such as mountains, deserts, and rooftops. Equipped with a large capacity rechargeable lithium battery, it can continuously measure temperature and take photos for more than eight hours when fully charged, meeting the needs of all day power station inspections; The side of the body is equipped with a Type-C fast charging interface, which can be recharged by an on-site power bank for emergency use. There is no need to worry about battery life when operating in remote areas without commercial power plants. The local storage space can store tens of thousands of thermal imaging images, support real-time video recording, and the suspected fault area can be recorded throughout the entire process for easy analysis of the cause of the fault in later review.

The intelligent data storage and report export system improves the digital management process of operation and maintenance. The thermal imaging images captured automatically synchronize and store temperature values, shooting time, GPS coordinates, and device parameters, supporting local image classification retrieval and batch export; The supporting PC professional analysis software can import thermal imaging files in bulk, automatically count all over temperature fault points in the power station, generate fault distribution heat maps, visually display high fault areas, and assist the operation and maintenance team in optimizing regular inspection routes. The software supports one click export of PDF detection reports, including thermal imaging raw images, temperature data tables, fault risk assessment, maintenance and rectification suggestions, which can be directly used for operation and maintenance ledgers, project safety acceptance archives. The device supports WIFI wireless image transmission, and real-time synchronized images are captured and sent to tablets and computers. On site management personnel can view the fault situation synchronously, issue maintenance instructions remotely, and improve the efficiency of operation and maintenance collaboration.

The safety protection design is adapted to the testing specifications for high-voltage photovoltaic electrical equipment. The equipment body is fully insulated and has no exposed metal conductive parts, eliminating the risk of electric shock when detecting high-voltage combiner boxes and inverters at close range; The lens is equipped with a detachable protective cover to prevent scratches and damage during transportation and storage, thereby extending the service life of the equipment. The equipment has laser assisted positioning function, and the infrared image temperature measurement points correspond one-to-one with the laser points. When shooting from a distance at high altitude, the temperature measurement area is accurately locked to avoid misjudgment of the temperature measurement points on the image and actual faults.
At present, the LX-F200 handheld infrared thermal imaging device has been widely used in the operation and maintenance departments of major new energy enterprises, power maintenance units, third-party photovoltaic safety testing institutions, and electrical inspection projects in industrial and commercial parks in China. A large number of operation and maintenance projects have proven that relying on high-definition infrared resolution and high-sensitivity temperature difference recognition capability, equipment can detect more than 85% of early thermal hazards in advance, effectively avoiding major safety accidents such as component burnout and fires, significantly reducing the cost of maintenance and replacement of power station equipment, and improving overall power generation revenue.

In the context of the continuous expansion of photovoltaic stock operation and maintenance scale and the increasingly strict supervision of power plant safety production, thermal imaging preventive inspection has become an essential process for standardized operation and maintenance. The Suzhou LAILX LX-F200 handheld infrared thermal imaging camera breaks the high price monopoly of imported thermal imaging cameras with domestically produced core detection hardware, customized photovoltaic scene functions, and high cost-effectiveness advantages, providing lightweight, high-precision, and intelligent thermal safety detection solutions for the photovoltaic and power industries. In the future, Lexus will continue to iterate the AI thermal fault automatic recognition function, link EL and IV detection equipment to build an integrated photovoltaic detection system, and comprehensively safeguard the long-term safe and stable operation of photovoltaic power plants.

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