Giuseppe Gustinetti
BLLT
Impianto di illuminazione urbana con
sensori di controllo di BLLT / Urban lighting
system with BLLT control sensors
Key Account Manager Street Lighting
& Public Administration
What is meant by "intelligent lighting"?
A lamp that knows when to switch on or off,
that regulates the luminous flux based on
external parameters and signals a fault for rapid
intervention. For us, this definition is not enough.
For us, a truly intelligent lamp must be a point of
access to a wider communication network, which
can convey heterogeneous information, the basis
of advanced services for citizens, with the
guarantee of covering the whole urban territory
and the geolocation of information. To know
what is happening on the territory, but also when
and where, with the aim of analysing this
information and planning appropriate actions.
And surely the absence of wiring, i.e. wireless
communication, guarantees immediacy of
integration and savings in infrastructure costs.
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• The third aspect, which I personally consider
essential, is what a good and intelligent lighting
can do in terms of comfort, safety, aggregative
and, therefore, therapeutic capability. Peacefully
living well-equipped spaces, illuminated and
safe, reduces the level of stress and increases
the moments or opportunities for gathering.
This is applicable, and should indeed become
a standard, also to schools, offices etc.
Obviously, the supporting sensors make its
operation very dynamic and functional to the
weather, light, and presence conditions.
It is addressed by making available to other
services, other than just lighting, the
network inevitably offered by the connected
street lamps. The type of connection does not
provide large bandwidths for transmitting data,
and for this reason it is necessary to make
it clear and to say that not everything we call
today Smart City can run over the street lighting
network. We can talk about sensors: brightness,
presence, underpass flooding, meter reading,
and environment sensors, etc. In a word,
everything that does not need a large
bandwidth. Images, complex management
of sensor networks, traffic management, waste
management and so on: they all need
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dedicated and different structures, because
the size of the data and their reading frequency,
among other factors, cannot be supported
by a network created for lighting control, which,
although dynamic or adaptive (TAI and FAI),
does not have a large bandwidth. It is obvious
that lighting and its urban network connect
the city and its areas, and if we were able
to design them to become pathways for events,
gatherings, and safety, we would be able
to enhance their features.
Very much so. As I explained before, the
characteristics of the lighting fixtures today
are able to offer very important reductions in
light pollution. If we add the use of Adaptive
Light, namely the automatic reduction of light
according to well-established parameters due
to the reduction in traffic and the change in
climatic conditions, we would obtain even more
important results in terms of savings and light
pollution. It must be said that many calls for
tenders today involve the use of Adaptive Light.
The positive impact on the environment is its
logical consequence, due to energy savings
and the reduction of light pollution.
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Antonio Ialeggio
GEOLUMEN
When it comes to LED urban lighting, it is
obvious to speak of the versatility of the
technology. LEDs provide certain variable
characteristics that certainly play an active
role in the design of urban spaces, whether
they are "historical centres" or suburbs. Not
only the extreme adaptability, in terms of
shape and size, of LEDs to highly
heterogeneous "lamp body" models, but also
the colour temperature and the multi-colour
(RGB) feature are elements that make it
possible to differentiate the effects of artificial
lighting. Having an interconnected lighting
system, with the possibility of acting on
individual light points and modifying the
colour and intensity parameters, of
programming switching on and off, of
identifying ad hoc light points for particular
chromatic effects, is not only possible,
but should be mandatory.
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The regulations on the matter govern the
use of the reduction of the luminous flux
and also the type of fixture that must avoid
light dispersion (the so-called full cut-off).
New technologies are emerging, especially
thanks to the remote interaction with the single
light point, such as the possibility of changing
the colour temperature of the LED plates.
So, you can start with a temperature of 4,000K,
and slowly go to a warmer temperature of
2,700K at midnight, making the variation
imperceptible. This is to limit the blue
component in the spectrum of light emitted
by LEDs, reducing as much as possible the light
pollution and disturbances that this component
generates to flora and fauna at night.
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Raffaele Villa
LEF HOLDING S.r.l.
Sales Manager ICT & Smart City & IoT
The possibility to use open and interoperable
technologies that combine environmental
sensors allows the Smart platform to interact
according to the type of environment by
automatically activating the best scenario for that
very occasion. The light thus becomes a tool to
offer, at all times, the appropriate supply of
illumination in relation to what happens and to
how people and objects move within the city,
maybe from one urban context to another that
can be completely different. Through this Smart
network the city communicates "its needs" in real
time, and the lighting, together with other
sensors and actuators, will adjust, offering the
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There are three features that we need to
boost, improve and/or, if you want, defend.
• The enhancement of real estate, historical, and
architectural assets, through the production of
light that brings out the naturalness of colours,
shapes, and shadows: the new LEDs are now
able to offer incredible chromatic performances,
and their dynamic management through
point-to-point or group control systems
increase their performance.
• The defence, promotion, and protection
of those areas such as parks, parking lots or
peripheral areas; in fact, the lighting and
control solutions available today allow us to
make marginalized, dangerous, or abandoned
areas safe and usable. Here too, a Smart
Lighting that responds to the presence and
movement of people and that amplifies in
intensity if the conditions of usability or safety
of the area change, combined with video
surveillance systems, is truly capable of
substantially modifying the current state
of affairs of many urban areas.