ILLUMINATION CONTROL SYSTEM

摘要

The invention concerns an illumination control system for controlling a plurality of lighting circuits. A control center (1) of the system comprises several outputs in parallel configuration, the outputs are provided with voltage controllers such as phase-angle controlled triacs, which receive their trigger pulses from dimmer circuits (13) controlled by a microprocessor-based control unit (3). The basic illumination level in each lighting circuit is stored in the processor memory. The processor (3) is correspondingly provided with several control interface ports (4), each of these providing a common interface for a room-specific illumination level sensor (7) and a manually-controlled control unit (8). The control unit (8) provides means for altering the illumination level while the basic illumination level is retained in the memory of the processor (3). The illumination sensor (7) serves for maintaining the illumination level essentially constant at the preset basic level or at the manually controlled level. With the help of a calibration switch (16) the processor (3) is controllable to receive a new set value of basic illumination level entered from the room-specific control unit (8).