Solar-powered LED

The purpose of this work is to illustrate and describe the trend of the latest technological innovations and new IoT-based devices used in solar powered LED lighting systems, in order to achieve energy savings, low maintenance costs and offer services additional to users. or community.

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The technological advancements of recent years have enabled the use of LED technology in many general lighting applications, from homes to commercial spaces or outdoors. LED lighting is expected to reduce your energy consumption by 15% in 2020 to 40% in 2030; In this context, solar powered LED lighting systems make a significant contribution to energy savings, along with significant benefits for the environment and health. The latest innovations in nanotechnology and quantum physics have the potential to greatly increase the electrical energy obtained from solar panels to power any portable device. In addition, the spread of the Internet of Things (IoT) and the wide use of smartphones and related applications allow wireless control and piloting of LED lighting systems, which can also be equipped with integrated sensors, thus creating new functions. better energy management and new services for smart cities. Finally, systems made up of connected lighting devices could become data collection platforms that, using renewable energy, allow even greater energy savings related to lighting and in general to electrical systems in buildings or smart cities.

Light-emitting diode (LED) plays a key role in energy saving and environmental protection in the lighting industry. LED lights are up to 80% more efficient than traditional lighting sources, such as fluorescent and incandescent lamps. Unlike these that create light with filaments and gases encased in a glass bulb, LEDs or organic light-emitting diodes (OLEDs), commonly known as solid-state lighting devices (SSL), are made up of semiconductors or materials. polymers that convert electricity into light. LEDs have been around for 50 years, but until the early 2000s they were only used in electronic devices as light indicators (Vitta et al., 2012). The technological advancements of the last two decades have allowed LEDs to be used first in signaling devices, such as traffic lights and exit signs, then in some limited lighting applications, such as flashlights, and now for many general lighting applications, from the homes. to commercial spaces to outdoor lighting (Visconti et al., 2011, 2012), (Costantini et al., 2011). Solid state lighting is used in a variety of lighting applications because it offers many benefits such as:  Long life: LEDs can provide 50,000 hours or more of life, which can reduce maintenance costs (compared to a light bulb incandescent lasts about 1000 hours).  Energy savings – White LED lighting systems provide triple or higher luminous efficacy (lumen / watt) than incandescent lamps. Colored LEDs are particularly beneficial for colored lighting applications because no optical filters are required.

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