Digitally Addressable Wireless Interface for Lighting Control System

Abstract

DALI, as an acronym, stands for Digital Addressable Lighting Interface. DALI is a concept that stands for an intelligent lighting management system that provides increased energy savings, easier installation and maintenance, and maximum control and retrofit flexibility -- in an entirely open standard. DALI is not a single product. It is an industry standard protocol that allows DALI-compliant components from different manufacturers (ballasts, control systems, sensors, controllers, switches, etc.) to be mixed and matched together seamlessly into complete systems. Wireless technology has been identified as a promising wiring and communication alternative for building systems. Reduced cost and complexity as well as increased flexibility on wiring are the primary advantages of wireless-enabled systems over their wired counterpart. We have interfaced a photo-sensor, temperature sensor and occupancy sensor to Master CC2531 USB Dongle. Using these sensor inputs we have send control signals to two slave micro controllers (CC2531 USB Dongles) to control the ballast in two different zones using Zig Bee Communication.