ENERGY
INTELLIGENT BUILDING AUTOMA
Andreas Schneider, Executive VP and
Installation and parallel operation of
hundreds of wireless components in
Co-Founder, EnOcean GmbH
restricted spaces is straightforward. To
exclude transmission errors, a telegram is
ntelligent building automation is the installed without cables thereby completely randomly repeated twice in the space of
I
key to green buildings, cutting the eliminating maintenance work such as about 30 milliseconds. Each EnOcean
costs of operation and purchases, as battery replacement. The amount of module comes with a unique 32-bit
well as substantially reducing the energy obtained in this way is enough to identification number to exclude any
energy consumed in buildings. In send a wireless signal, and turn on a light possibility of overlap with other wireless
addition, wireless switches and sensors for instance. switches. The range is up to 30 meters
enabled by EnOcean greatly simplify the Furthermore, EnOcean technology inside buildings and 300 meters in the
cabling of a building. At the same time offers the greatest installation flexibility open.
they make enhanced flexibility because no because no new cabling is needed if
new cabling needs to be routed if future alterations are planned. The sensors MORE COMFORT FOR ABERDEEN
alterations are made. With little effort and can be installed in locations for optimal HEADQUARTERS OF ACERGY
without damaging walls, EnOcean- use with minimal effort, without causing One example of the use of EnOcean
enabled products can be attached where damage and can be removed easily, if technology is the office of Acergy. The ‘self
they are of optimum benefit and just as required. powered’ switches from MK Electric’s has
easily removed again. EnOcean technology is characterized recently been harnessed to provide local
by efficient energy converters, ultra-low- switching for the central vacuum system at
HARVESTING POWER FROM power electronic circuitry and a reliable the Aberdeen headquarters of Acergy, an
SURROUNDING ENERGY wireless protocol. The wireless signal is offshore oil and gas engineering
EnOcean develops maintenance-free transmitted in the 868 MHz or 315 MHz company.
wireless sensor technology for use in frequency band, meaning it fits into a The novel application came about
buildings and industrial installations. The broad range of products worldwide. The when the company’s cleaners found that it
wireless components harvest tiny amounts telegrams are just one millisecond long, was hard to remove the suction hose from
of energy from their surrounding which is approximately one hundred times wall outlets connected to the central
environment – linear motion, light or shorter than the signal of a conventional vacuum system – in effect a giant built-in
differences in temperature – and can be wireless switch. hoovering system. Back pressure in the
system made removing the hose difficult
and the only way the cleaners could
remedy the problem was by walking back
to the plant room and turning off the
system.
Not only was this inefficient and time
consuming, it was also tiring for the
cleaners who at times were walking
distances of up to 85 metres to the plant
room to either switch the vacuuming unit
on or off.
The solution was arrived at thanks to
some lateral thinking by consultants
CCPD, who used echo’s installation
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SUSTAINABLE FM | NOVEMBER/DECEMBER 2009
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