New Lighting Fixture Integrates Occupancy, Daylight Sensors

An innovative new office lighting fixture combines a handful of cutting-edge technologies that, taken together, help reduce the cost of energy-saving automated lighting controls. The new “Ergolight” fixture from Ledalite, of Langley, British Columbia, may be the beginning of a new trend in office lighting.

Ergolight is a three-lamp direct-indirect pendant fixture, with the two outside lamps providing direct downlight, and the center lamp offering indirect ambient light reflected off the ceiling. It uses T-8 fluorescent lamps, which are by now standard on most energy-efficient luminaires.

Built into the bottom of the fixture are two automatic lighting controls: a passive infrared occupancy sensor and a photocell or luminance sensor for daylight dimming. The photocell controls all three lamps via the built-in dimmable electronic ballast, which can dim down to 5% of full lamp output. The occupancy sensor turns off the two lamps providing downlight when the space is unoccupied. The most unusual feature, however, is that the fixtures are all tied into a Master Control Unit that interfaces with the office computer network. This interface includes software that allows users at individual workstations to control the base light levels and dimming range of each fixture (or group of fixtures). The software also provides powerful system-wide control and electrical usage tracking capabilities for the facility manager.

...

To read the complete article, please login below.

BuildingGreen.com