LIGHTING
& ROOM
OCCUPANCY

LIGHTING & ROOM OCCUPANCY OVERVIEW

A lighting control and room occupancy system consists of devices and that controls electric lighting and devices. It is one of the sub systems of BMS (Building Management Systems) and a key element of EMS (Energy Management Systems).

Lighting any workplace costs money, yet most businesses lose profits daily by operating lights in unoccupied areas. Those profits can be regained with a lighting control system which can switch lights on and off based on occupancy, time of day, and the room’s ambient light level. Occupancy sensors control lights by detecting movement in work areas, and then based on the occupancy of the room, automatically turn lights on when people enter a room, and off when they have left.

Used properly, a lighting control system can be a cost-effective way to reduce the operating time of lighting systems, resulting in outstanding energy savings and short term return on investments.

DAYLIGHT HARVESTING

Controlling lights with daylight harvesting involves the ability to fine-tune the light output according to how much sunlight enters a room. This is accomplished by installing light sensors in strategic areas; a light sensor measures the lux level around the sensor, and then adjusts the lighting panels in that area to maintain the luminous within the room.

AVERAGE SAVINGS POTENTIAL

Space Type Savings Potential
Private office13–50%
Conference room22–65%
Classroom40–46%
Restrooms30–90%
Corridors30–80%
Store areas45–80%