Lighting
‘Lights can be dimmed to match the exact lighting requirements for designated areas’
From page 25... Many rail companies are therefore
turning to new lighting technologies, with the main emphasis currently on LEDs. Previously used only for applications that did not need a high lux level, new advances mean that LEDs are now suitable for general use. The cost for installing a whole new LED system can be huge though and the savings in particular areas might not always be great. The development of wireless control
and monitoring systems, however, has meant that existing outdoor lights can now be dimmed to provide savings without having to install LEDs. This is done by adding a small antenna to the lamp head, plugged into the electronic ballast. Where LED lighting is in place, this lighting solution can also be installed alongside to provide maximum savings. Lights can be dimmed to match the
exact lighting requirements needed for particular areas, managing lighting effectively according to its location. This ensures there is no glare, no light trespass, no direct up light, no harsh shadows and no steep transitions from light to dark, making sure the security lighting rules are met. Using the philosophy: ‘the correct light at the correct time’, wireless street lighting systems allow total control rather than over-lighting areas and wasting energy whilst potentially causing a security risk.
As well as ensuring the correct quality of light is achieved for security on railway lines, wireless monitoring and control systems are also ideal for outside railway stations, both on the trackside and roadside. These systems can be controlled so that lights are dimmed at times when trains are not as likely to be going in and out of the station, but can be brought back to full light when people start gathering at the station for an oncoming train. As well as helping to reduce energy, this ensures security through CCTV, while maintaining safety through the use of good quality lighting for the benefit of passengers waiting at stations. The use of wireless control and
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monitoring systems is a big step forward, both in terms of ensuring the lighting is of the best quality to maximise
security and reducing carbon emissions and keeping maintenance costs down. Railway lighting managers can control lights individually, in groups, or as a whole throughout the infrastructure, from their computer, laptop, tablet or mobile phone.
Michael McDonnell is the business development director at Harvard Engineering. Harvard won both a Queen’s Award in Innovation and the Innovation award at the 2011 National Business Awards for its LeafNut wireless monitoring and control system Visit:
www.harvardeng.com
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