SMART LIGHTING: ONE MORE STEP TOWARDS HEALTH AND SUSTAINABILITY.
THE COMPANY SETGA HAS DEVELOPED A TECHNOLOGY BASED ON SMART LIGHTING THAT ALLOWS IT TO ADAPT TO THE CIRCADIAN RHYTHM OF CITIZENS.
A smart city is committed to its inhabitants’ welfare. It takes into account a CO2-free transport and a type of lighting that does not affect the users’ health. The new cities are already here, and smart public lighting deployments will reach total energy savings of USD $15 billion for cities by 2023, according to Juniper Research.
TOWARDS HEALTHY LIGHTING
Good lighting for sustainable cities is the goal of agents and companies in the sector. Artificial light is composed of visible light and ultraviolet (UV) and infrared (IR) radiation, and there is concern about the effect of some LED lights on the circadian regulation processes and associated systemic diseases.
In response to this situation, and in order to achieve a more efficient and healthy light for all, concepts such as Human Centric Lighting arise, adapted to our needs to reach the maximum quality of light and lighting at all times. The objective: to create lighting projects designed to optimize or improve some aspect of human behavior. So, Human Centric Lighting is already applied indoors and outdoors.
LIGHT AND THE CIRCADIAN SYSTEM, ENTIRELY CONNECTED
Light is the main synchronizer of the circadian system. The National Institute of General Medical Sciences explains that circadian rhythms are physical, mental and behavioral changes that follow a daily cycle, and that respond mainly to light and darkness in an organism’s environment. Sleeping at night and being awake during the day is an example of a circadian rhythm related to light.
To maintain good health, the circadian system must work properly. That the day be day, and the night be night, which involves making an adequate use of lighting, both indoors and outdoors. This is established by the Delegation in Galicia of the Spanish Lighting Committee, which emphasizes that a healthy lighting should seek to recover day-night contrast, increasing the first and decreasing the second.
In order to achieve healthy lighting, when remodeling old outdoor lighting installations or to proceed with new installations, it is important that the new lighting creates no negative effects on the circadian system. The CEI (Spanish Lighting Committee) recommends using light sources with low blue light content or variable systems that allow to lower the color temperature and the level of lighting during late night and reaching the lowest possible levels in night hours.
Setga has long adapted to these measures, creating lighting projects that take into account the effects of light on human physiology. We know that we need the same lighting, but with different tones for each hour of the day, and Setga achieves these nuances in the street lighting of cities without having to change the lighting of the streetlamps. The Galician company has created a technology, Circadionic, that adapts to the circadian rhythm of citizens.
Thus, on autumn-winter evenings, when it gets dark around 5:30 pm, the LED Circadionic technology will take the color temperature to a neutral level above 4200 kelvin (white light), “in order to maintain the activity in commercial streets and boost sales”, explain the executives. As of 8:30 pm, when citizens return home and melatonin segregation begins, “the color temperature will be reduced to warmer color temperatures between 2700-3000 kelvin.”
This system is based on the mono-optical compaction of biodynamic white, “to adapt the color temperature of the lights to the circadian rhythm of the citizens, maintaining an IRC >80 and high energy efficiency.” This added to photometrics adapted to each need, “which improves the comfort and public health of the entire society in the transition to nighttime,” they remarked.
News piece taken from www.smart-lighting.es