Intelligent street lights adapt to conditions in Finland

May 27, 2013

VTT Technical Research Centre of Finland has developed a dimmable LED street light that consumes significantly less energy than current lighting systems, while improving the lighting characteristics. The street lights were tested in Helsinki with user experiences collected.

Traditional street lights work on full power when turned on, and the amount of light is not usually adjusted. The new LED street lights developed by VTT adapt to the with the help of sensors and wireless control, allowing them to be dimmed on the basis of natural light, environmental conditions (for example light reflected from snow) and the number of pedestrians. In order to maintain comfort, several characteristics important to , such as the amount and colour of light and the shape of the , are considered in the luminaire design. Particular attention was paid to glare control, light distribution and sufficient lighting of road shoulders.

The intelligent system stores information on , temperature, lighting level, and number of pedestrians, among others. According to laboratory measurements, the new LED street light is 50 per cent more energy-efficient than traditional lights on the market - without the intelligence factored in. With lighting levels adjusted according to the number of users or to natural lighting conditions, an additional energy saving potential of 40 per cent with added intelligence has been observed. The developed lighting method is based on available components (for example, LEDs and sensors).

The street lights were tested along a pedestrian road in Helsinki, where initially a total of 20 reference street lights were installed. These represented five different luminaires on the market, three of which were LED luminaires and two others a traditional high pressure sodium and a metal halide lamp luminaire. Aalto University carried out a user survey in the pilot installation area, based on which VTT designed the new LED street light. Demo lights were installed at the end of 2012 as an extension of the first test installation, after which Aalto University carried out another survey on the experiences of the people using the road. The demo street light received the best feedback in the survey.

Explore further: Imaginative ideas for a 'greenlight district' in Amsterdam

Provided by VTT Technical Research Centre of Finland

5 /5 (2 votes)
add to favorites email to friend print save as pdf

Related Stories

New LED streetlight design curbs light pollution

Apr 24, 2013

Streetlights illuminate the night, shining upon roadways and sidewalks across the world, but these ubiquitous elements of the urban environment are notoriously inefficient and major contributors to light ...

Plants communicate what type of light they want

Apr 08, 2013

Enormous amounts of energy are wasted in greenhouses where our food is grown as a result of the plants receiving too much and the wrong kind of light. This can also stress and damage the plants. Researchers ...

Light pollution transforming insect communities

May 23, 2012

(Phys.org) -- Street lighting is transforming communities of insects and other invertebrates, according to research by the University of Exeter. Published today in the journal Biology Letters, the study shows ...

Streetlight policies could cast a shadow over wildlife

Nov 16, 2012

(Phys.org)—Scientists have conducted the first study into the ecological effects of a variety of energy-saving options to reduce overnight street lighting. Among the findings, researchers discovered that ...

Stop traffic crashes: Switch on the lights

Jan 21, 2009

Street lighting provides a simple, low cost means of stemming the global epidemic of road traffic death and injury. Low income countries should consider installing more lights, and high income countries should think carefully ...

Recommended for you

Image: Testing electric propulsion

21 hours ago

On Aug. 19, National Aviation Day, a lot of people are reflecting on how far aviation has come in the last century. Could this be the future – a plane with many electric motors that can hover like a helicopter ...

Where's the real value in Tesla's patent pledge?

22 hours ago

With the much-anticipated arrival next month of electric vehicle manufacturer Tesla's Model S to Australian shores, it's a good time to revisit Tesla's pledge to freely share patents. ...

New type of solar concentrator doesn't block the view

Aug 19, 2014

(Phys.org) —A team of researchers at Michigan State University has developed a new type of solar concentrator that when placed over a window creates solar energy while allowing people to actually see through ...

Asian inventions dominate energy storage systems

Aug 19, 2014

In recent years, the number of patent applications for electrochemical energy storage technologies has soared. According to a study by the Technical University Munich, the largest volume of applications is ...

User comments : 0