LeafNut - Harvard Technology

THE CONTROL SYSTEM
FOR STREET LIGHTING
Overview
LeafNut is a wireless control and monitoring system for street and outdoor
lighting, which provides users with the ability to make savings by reducing
carbon emissions and lowering energy usage.
The system uses WiMAC protocol Central Management System (CMS)
technology to remotely manage and control the output of individual lighting
points, using a combination of GPRS and radio frequency.
Each lighting point can be dimmed using automatic profiles to match the
specific requirements of the surrounding area throughout the night. At the
users command, such as in the event of an emergency, lighting points can
be brought back up to full brightness at the touch of a button, from either a
computer, laptop, tablet or smartphone.
Every lighting point within the inventory is remotely monitored, with any
faults being reported to the specified user(s) via scheduled email. Reports
detailing the energy usage of each light, or a particular group of lights, are
also available.
So far, LeafNut has been successfully installed by over 100 organisations
monitoring over 400,000 light points across the world and is used to realise
significant cost savings and reductions in carbon emissions.
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WHY ADOPT A CMS SYSTEM?
1.
Energy Savings – Streetlighting can account for up to 40% of a local
authority’s energy bill. By remotely dimming and trimming light levels
across an outdoor lighting inventory, Leafnut can help reduce a local
authority’s energy costs significantly
2.
Carbon Reduction – LeafNut reduces energy consumption, thereby
lowering carbon emissions, which is a major priority for UK local
authorities due to government initiatives such as the Carbon Reduction
Commitment
3.
Ease of installation – WiMAC, the Central Management System (CMS)
protocol behind LeafNut has developed a suite of devices to speed
up and simplify the LeafNut system set-up, including handheld PDA
commissioning and diagnostic tools
4.
Robust System – Originally developed and extensively tested alongside
local authorities, LeafNut is now field proven as a robust and reliable
CMS across multiple installations since 2008
5.
Scalable - Modular by design, LeafNut has been deployed in many
locations, from small car parks to large city authorities, our largest
single installation now monitoring and controlling almost 90,000 light
points
6.
Integrates with Asset Management Systems (AMS) – LeafNut has
the capability to interface with most streetlighting asset management
systems to ensure inventories are synchronised and maintenance
activities can be scheduled accordingly
7.
On site training – From best practice installation and commissioning to
system interface user training
8.
Accessibility & Control – Lights can be monitored and controlled from
anywhere in the world, over the internet, using a smartphone, tablet,
laptop or computer
9.
After Sales Support – An extensive field technical and controls support
helpdesk team are available to ensure timely project delivery, as well as
user support for the lifetime of the project
10.
Future Proofed – Harvard is committed to the ongoing development of
the LeafNut System, with regular software releases and new hardware
developments, to ensure inter-operability and future proofing of the
system for the long term
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UPTO
256
NODES PER BRANCHNODE
BranchNode
Radio frequency (868mhz)
Nodes
Nodes
Remote Server
Mobile connection (GSM)
TrunkNode
The TrunkNode is where users access and manage their LeafNut system. The LeafNut
remote monitoring system can be managed wirelessly by laptop or desktop computer
from anywhere in the world. It uses sophisticated ground-breaking WiMAC Central
Management System (CMS) technology, which provides the operator with a secure
Internet connection so nodes can be commissioned, assigned to a dimming profile and
report back in a matter of minutes.
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Hardware
BranchNode
The main controller Unit for the LeafNut system, the
BranchNode communicates bidirectionally via radio with
up to 256 nodes with an urban range of 1km, rural up
to 8km. The branch also contains a GPS, photocell and
communicates back to the TrunkNode via GPRS.
Nodes
Nodes are available to suit a variety of install types
including LeafNodes, RetroNodes, MagNodes,
NemaNodes and UniNodes, which can interface any
DALI/1-10v control gear with the LeafNut CMS.
UniNode Gen III
The recently launched UniNode3 contains a light sensor,
which allows for a daylight/ photocell type failsafe
operation and eliminates dayburning for any luminaires
which are not in communication with the Branch. An
additional energy monitoring chip is also built in.
LED Drivers
Harvard design and manufacture a range of LED drivers
up to 200W, to suit the widest range of outdoor and
streetlighting applications, including WIMAC and DALI
enabled drivers
RetroLED
RetroLED gear trays offer a simple and cost effective way
to convert SON, SOX and CFL street lights to LED without
a full luminaire replacement, with energy savings of up
to 60% and carbon reductions of up to 75kg per light per
year.
The gear trays can also be equipped with LeafNut for a
complete LED/CMS solution
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Westminster case study
“Harvard’s LeafNut system is enabling
Westminster to transform the public lighting
service. The City Council now has a dynamic,
interactive lighting solution suitable for the
requirements of one of the world’s most
demanding city’s.
Rolled out across Westminster’s 15,000
street lights, with over 100 BranchNodes
currently installed controlling the whole
borough.
A system that not only meets our current
demands, but will be able to adapt to
future challenges. The ‘end to end’ solution
provided by LeafNut promotes a two way
dialogue ensuring that our needs are met
and any concerns are addressed directly,
with their ongoing support that is seen as a
significant benefit.”
The ability to monitor and control Lighting
from CCTV control centre or the Police
reports. If levels are too low managers will
be immediately alerted.
The potential to reduce light output by 25%
during off peak times where there is little
activity.
Harvard’s engineers are constantly working
alongside Westminster’s street lighting
engineers to ensure smooth running of the
system.
The installation of LeafNut is expected to
save Westminster City Council an estimated
£20 million over an anticipated 20 year
product life cycle.
Dave Franks,
chief lighting engineer at Westminster City Council
LeafNut is perfect for…
Car Parks
Local Authorities
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COMING SOON in 2016
....the next stage in the evolution of the
LeafNut CMS for the Smart City.
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Lighting products, enlightening solutions
Harvard Engineering Ltd.
Tyler Close Normanton Wakefield WF6 1RL United Kingdom
Tel: +44 (0)113 383 1000 Fax: +44 (0)113 383 1010
www.HarvardEng.com