BSEE SMART BUILDINGS
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uProlojik’s Lightmatrix system was supplied to London secure storage facility, The Armitage. As well as the open protocol nature of the Dali PoE system, which allows future entry to any contractor needing to make changes, the auto‐addressable functionality of Lightmatrix removes the need for management to involve an IT contractor to readdress any luminaire that is changed.
POWER OVER ETHERNET Perfectly poised for the challenge
Power over Ethernet (PoE) lighting controls are no longer a new idea. As one of the first out of the starting gates to bring PoE to the UK market, Prolojik is now striding out of the early adopter phase and the Internet of Things (IoT) is trickling out of the specialist technology domain and into the consumer arena. Mark Vincent, Commercial Director, Prolojik, reports.
n 2015, it was estimated that there over one billion square feet was being illuminated by PoE lighting globally. As we contribute a further 200,000 square feet to this total with the largest European PoE lighting installation to date, we can confidently say that PoE lighting has been accepted into the M&E contractor’s tool kit.
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The joy of Power over Ethernet lighting lies in its flexibility to meet a wide range of needs. While the principles of PoE lighting are the same across all solutions, the precise installation can vary. The simplest division lies in whether PoE is implemented as an extension of the IT network, or not. In the majority of PoE lighting systems currently available in the UK, each luminaire is assigned its own internet protocol (IP) address and becomes a point on the IT network. This presents exciting possibilities in an IoT world but it does present drawbacks. The many thousands of IP addresses required for the lighting infrastructure of a large building increase the risk of ‘back door’ entry to the building’s network. The system architecture may become unwieldy to control and maintain, and will certainly require management by a skilled IT team.
Our own approach is different, currently unique in the UK and delivered via our Lightmatrix system. We separate the communication of power and data; reaping the benefits of Ethernet to deliver up to 60W, while data is carried via Dali standard network cabling. Only a single IP address is required per switch stack, greatly reducing the network security risk of PoE lighting.
Dali network
This streamlined networking approach also allows lighting control to remain in the mechanical and electrical (M&E) sphere and under the day to day control of the facilities
management team, because it is part of the Dali network.
Our Lightmatrix system was recently supplied to prime London secure storage facility, The Armitage, which
now enjoys a simplified maintenance outlook. As well as the open protocol nature of the Dali PoE system which allows future entry to any contractor needing to make changes, the auto- addressable functionality of Lightmatrix removes the need for The Armitage management to involve an IT contractor to readdress any luminaire that is changed.
Power over Ethernet lighting presents advantages at every stage of the process, from specification and installation to the user experience of the building occupant.
For building control specifiers, the space-saving aspect of PoE lighting controls can be a deal maker. As PoE controls are not reliant on electrical wiring or large distribution boards, much of the traditional final circuit and associated containment are not required. For our work at The Armitage, our Lightmatrix PoE lighting control system was specified for its ability to make best use of a particularly low ceiling void throughout the site. For developers and building management, the cost saving potential of Power over Ethernet lighting is hard to argue with. Analysis undertaken by the professional team of an early Lightmatrix application has shown that PoE can deliver capital cost savings of up to 30% in a typical commercial building, compared to a mains wired lighting system.
Plug and play
The reduced requirement for costly copper wiring and the simplified ‘plug and play’ installation process which minimises the involvement of electrical contractors, all contribute to an efficient commissioning process. Our analysis has also shown that a PoE LED lighting system in flight can produce energy savings up to 11% compared to a 240V LED system, and up to 37% compared to T5 fluorescent tubes. The intelligent power distribution capability of PoE means that power is only supplied once a luminaire has confirmed its requirements. In practice, this reduces power loss in cables and minimises heat gain, cutting the need for cooling.
32 BUILDING SERVICES & ENVIRONMENTAL ENGINEER SEPTEMBER 2017
With the end user in mind, Power over Ethernet lighting creates new opportunities to design human-centric spaces. Through custom software, such as Prolojik’s Perspective, lighting control can be integrated with other building systems to provide a seamless experience.
At The Armitage, for example, the use of our Lightmatrix PoE system allowed for integration with both the secure door entry system and the on site CCTV. The use of a door fob to gain entry to the building could instruct the lighting system to illuminate the required storage unit and the precise unique route to its location. At the same time, the CCTV system could begin recording those spaces, instead of recording hours of unnecessary footage of empty spaces, taking up valuable data storage.
Occupants’ needs
As the wellbeing of building occupants becomes an increasingly prominent issue, Power over Ethernet lighting solutions offer the best tools yet to deliver dynamic lighting systems to meet occupants’ needs. As we move beyond simple responses, such as diffusers for fluorescent tube lamps to reduce glare, the data connectivity of PoE lighting permits the integration of multi-function sensors to create an adaptive system able to respond to presence/absence, availability of natural light, and temperature within the space. At its best, PoE can deliver bio- adaptive lighting to complement users’ circadian rhythms, an approach known to support alertness, productivity, health and wellbeing.
The pace of change in lighting has accelerated in recent years and shows no sign of abating. The demands made of lighting systems continue to evolve, to reduce the electrical installation dependency on raw materials like copper; minimise the installation space required; and ensure the end user is at the heart of design – all challenges that Power over Ethernet is perfectly poised to meet.
www.prolojik.com VISIT OUR WEBSITE:
www.bsee.co.uk ‘ For building
control specifiers, the space‐saving aspect of PoE lighting controls can be a deal maker. As PoE controls are not reliant on electrical wiring or large distribution boards, much of the traditional final circuit and associated containment are not required.
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