II. SYSTEM MODEL
In this paper, a lighting system for an office space is developed with five LED luminaires arranged in the ceiling as
shown in Fig.2. The office space contains four LED lamps placed at four corners and one is centrally placed.
Each LED lamp has, near it, an LDR sensor. A set of two LED lamps are controlled by one microcontroller,
whereas the remaining three LED lamps, including the centralized one, is controlled by a second micro controller.
A centralized micro controller is also used to control these two local microcontrollers.
Each LED lamp has a specific address by which the corresponding
microcontroller identifies it.