The energy wastage is proved a big problem in this modern life. Usage of the energy resources are increasing rapidly. The current scenario of the street light system is that it needs the man power to control the lighting system and the other problems associated with the conventional street light system is energy wastage .The street lights are seen in ON condition in the day time when not needed and in OFF conditions sometimes when needed most. To avoid these errors, the street lighting system is being controlled by GSM technology, Microcontroller and a Schmitt trigger circuit. A number of street light control system have been developed to control and to reduce energy consumpation of a public lighting system. These ranges from controlling a circuit of street light and/or individual lights with specific ballasts and network operating protocols. These may include sending and receiving instruction via a separate data network, at a high frequency over the top of the low voltage supply or wireless. The control centre will deal with the data so that it can know the situation of each streetlight. A novel scheme for a Zig-bee based street light control is to proposed with an aim to reduce the human error in the operation of street lights, decrease the energy consumption of the system, and ease the maintenance of the street light network. These objectives are achieved by creating a wireless Zig-bee network of street lights that can be monitored from a base station. An automatic mode of operation that utilizes light sensors to automatically switch ON the street lights when light intensity falls below a certain level, has also been incorporated.

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Arundhathy Mohan

Papers

A comparitive approach of energy efficient street lighting systems