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Smart Street Lamps
October 29, 2010   
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The Intelligent LED Street Lighting System (SILED), developed by a group of engineers and scientists in Gdańsk, automatically adjusts the intensity of emitted light to the brightness of daylight.

The system, designed by engineers from the SILED company, aided by researchers from the Gdańsk University of Technology’s Center of Excellence for Wireless Communications (WiComm), was singled out for praise at last year’s Technicon Fair of Industrial Science and Innovation in Gdańsk.

SILED is made up of three parts: a lighting system composed of light-emitting diodes (LED) producing white light, an “intelligent” control system, and a wireless communications system. The technology features a number of autonomous transmitter-receiver systems that spontaneously form a mesh network when connected to a power supply. Thanks to such an arrangement, the devices can communicate with one another. Remote control is possible for both individual LED lamps and groups of lamps.

The lighting system is designed for public spaces such as streets, squares, parking lots, stadiums and sports arenas. It can adjust the intensity of light depending on the time of day, weather, cloud cover and so on. In bad weather, it will automatically increase the brightness of lamps and do the reverse in an open area on a sunny day. It will also automatically dim the lights when no people or vehicles are detected in a given area. The designers say the SILED system can cut the amount of energy consumed by lighting systems by around 50-70 percent compared with systems based on conventional sodium-vapor lamps.

Lighting the way

Each lamp in the SILED system is fitted with a device that interacts with the rest of the system and is in charge of the “intelligent” behavior of the lamps. Groups of lamps on different streets, for example, communicate with the system server via the internet. An application installed on the server, which is a PC-type computer, monitors the system for malfunctions and allows for fully programmable work of the lamps. It is possible to program the glowing schedule of an individual lamp or a group of lamps like a row of lamps on a street. The monitoring functions allow each lamp to keep a record of events, the lamp’s condition, the energy it consumes over a given period of time and the intensity of the light the lamp emits.

In addition to being a lighting system, SILED has been designed as a platform enabling a range of other services, mostly telemetric such as monitoring of noise, humidity, temperature and pollution (dust and CO2 concentration). It can also control information boards and camera surveillance networks in selected areas. In other words, the idea behind SILED is to make sure the system can keep up with the latest technological developments. The designers want the system to keep evolving as more efficient LEDs are developed to ensure lower energy consumption and lower production costs.

SILED can be further enhanced to be used in tourist information and access control systems in buildings, for example.

The SILED project has in part been financed by the European Union as part of its Innovative Economy Operational Program. Most of the funds will be spent on further research and development of LED lighting systems. Addressing the market demand, SILED engineers have recently intensified work on an indoor lighting system.

The SILED company is 100-percent based on Polish capital. It works closely with researchers, especially those at the WiComm Center of Excellence for Wireless Communications at the Gdańsk University of Technology’s Faculty of Electronics, Telecommunications and Informatics. Together, they work on developing innovative technology to foster energy efficiency.
Ewa Dereń
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