INTELLIGENT ROAD LIGHTING

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INTELLIGENT ROAD LIGHTING
PROMILL Lecture and Training Session April 11-12,
2006 Fudan University, China

• Pentti Hautala

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Present situation

• Highway authorities and civil servants will dim
  or switch off road lighting at random

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Goal

• Coherent guidelines will lead to the better
  activity plans and solutions
• Savings without losses in traffic safety
• - Electricity
• -- always optimum level of luminance - 35
• -- no need of maintenance factor - 12,5
• - Maintenace
• -- control
• -- management - 30
• -- activity planning
• Repayment period
• - additional installation costs lt 15
• - calculated pay-back time 12-14 years
• - reduction of unit prices due to development,
  increasing demand

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Starting points

• Conventionally functional classification of roads
  and streets is mainly based on traffic flow.
• Furthermore lighting class will be specified in
  relationship to the functional class of road.
• It is to be considered that performance
  requirements of road lighting can vary with
  traffic flow of the same road.

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• CIE 115-1995
• Recommendation for the lighting of roads for
  motor and pedestrian traffic
• - 5.2 Choice of lighting class
• - 5.3 Temporal variation of lighting class
  
  according to traffic density
• TECHNICAL REPORT CEN/CR 13201-1
• Selection of lighting classes
• Different but constant values for the road type
  depending on traffic flow and road conditions

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• CIE. Division 4. Lighting and signalling for
  transport
• Technical committee TC4-44
• Management and Maintenance of road lighting
• Terms of Reference To revise Publication CIE
  115-1995 in such a way that lighting performance
  requirements may vary depending on actual status
  of environmental and traffic conditions.

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Traffic and road parameters

• Traffic engineering aspects
• Traffic safety
• Flow and fluctuations
• Control parameters
• Road conditions
• Reflection properties
• Wet surfaces
• Metering

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Hourly flow
Veh/h
Tu 28.3.2006
Hour
Direction 1 Direction 2
In all
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Hourly variation factor (q/Q)
TU 28.3.2006
Hour
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Traffic flow vehicles/5 min. Speed of traffic
Kt50 Kehä3 Vantaanportti, LAM nro 23150, 23.3.2006
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Information from the automatic road weather
station
Wind
Visibility
Tempera-ture
Conditionof road surface
Kt45, Ilola_R, TSA nro 1036, 28.3.2006
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Projects of intelligent road lighting 2006
Motorway Helsinki-Turku section Kolmperä-Lohjanhar
ju. 17 km
Ring III. 5 km
Motorway Helsinki-Porvoo section
Västersundom-Harabacka. 31 km
Vuosaari Harbour Road. 3 km
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Ring III.System layout
Internet or Intranet
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Data transmission
ATS road weather station LAM traffic monitoring
system L20 luminance meter KI electrical
distribution box
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Structure
Maintenance
Traffic center
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Ring III luminaires

• What is needed more for intelligent road
  luminaire.
• One OLC component, which control luminaire.
• Installation of the component into column or
  luminaire.
• Component recognizes its own commands from
  network cable.
• Components can be added to old installation, too.

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Lamp and dimming

• Dimming doesnt reduce lamp life
• OLC component control nominal lamp voltage
• Temperature has lower level inside of luminaire,
  save components
• After ignition lamps must burn first 10 min at
  100 power, after that dimming is possible

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Companies in the Ring III project

• Planning and design
• SITO Ltd, Finland www.sito.fi
• Telemanagement system
• Edelcom Ltd, France www.edelcom.fr
• User interface and control software
• Doston Ltd, Finland www.doston.com
• Luminaires and Project coordinator of control
  system
• Idman Ltd, Finland (Idman is a member of Philips
  group) www.idman.net

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Electronic ballast

• Electronic ballast save lamp
• Nominal lamp voltage has always right level
• Power factor is 0,99
• Only one component in luminaire, easy maintenance
• Facilitate dimming for Ceramic Metal Halide
  lamps. Dimming level down to 50
• High Pressure Sodium lamps dimming down to 20

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Motorway Helsinki-Turku section
Kolmperä-Lohjanharju 1.System layout
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• Road lighting is radio controlled by 3
  clusters (CLCs) and there are 758 luminaires
• 636 pcs ST-250
• 74 pcs MT 250
• 48 pcs ST-150 luminaires.
• DB Distribution board inc. CLC
  (cluster)-controller,
• DSL-connection to the server of Road
  Administration
• M Master-unit in the column

• Leuci Teorema luminaire 250W SON-T with
  Metrolight Ltd dimmable electronic ballast and
  Royce Thompson Ltd RF2-unit (radio controller)

ÖSTERKULLA OVERBRIDGE
VEIKKOLA INTERCHANGE
HISTA INTERCHANGE
Towards LOHJA
Towards HELSINKI
DESIGNER Trilight, Vantaa, Finland
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2. Functional structure

• Basic Functions
• DSL or GSM connection from controlroom to CLC
• Collecting burning hours
• Collecting the data of defect luminaires and
  lamps
• Group dimming 40 100, stepless
• Comparation of the lamp healthy
• Photocell if the group control is lost

DESIGNER Trilight, Vantaa, Finland
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3. Benefits

• Energy saving even by full power conventional
  ballast 284W, electronic ballast 260W
• Independent of supply tension 170-270V, the first
  and the last lamp gives the same lumen output
• Stepless dimming in real time
• No extra power losses by dimming
• Electronic ballast allmost linear from 100
  (260W) to 40 (120W).
• Extended lamp life 2 3 times
• Improved lamp color temperature retention and
  greater color uniformity between lamps
• 90-95 lumen output after 20.000 operating hours
  
• Total energy saving up to 65 with dynamic dimming

DESIGNER Trilight, Vantaa, Finland