Development of a daylight responsive dimming system and preliminary evaluation of system performance

In order to make a daylight responsive dimming system itself more flexible and reliable in both control method and system operation, a new system controlled by a computer software program has been developed. The light output from the dimmed luminaires is determined by the selected control algorithm, or is manually controlled in the computer software program. In this paper, the components of such a system are described, and the quantitative aspect of system performance has been evaluated. The results show accuracy and reliability on system performance. The workplane illuminance is maintained relatively close to the target level, and 30–70% of total lighting energy can be saved accordingly.