Microcontroller Based Smart Street Light Control System

Abstract

The work in this Thesis is directed towards the automation of ‘High Brightness LED’ based street light systems in India. Presently street lights in India are manually controlled or controlled by hardware timers in some cities. However they have the disadvantage of wastage of electrical power due to improper switching of lights during day/night times and undisciplined changeovers of time settings required for hardware timer based lights. The LDR based systems could be an alternative to these systems for automatic switching but they have poor reliability due to factors like dust, moisture e.t.c. and not popularly installed. In this thesis a sensor-less, robust and energy efficient street light control system which requires minimum maintenance and is simple in architecture has been designed. Time based switching to decide intensity of street light has been used. The statistical data of daily sunrise and sunset has been taken from reliable resources for Chandigarh (India). The system uses Microcontroller, Real time clock and External memory chip. The control logic has been tested in Proteus software for proper functionality. Calculations have been done taking into care the characteristics of 36W LED street lamp (Voltage vs. power consumption characteristics).Total Power saving of 365 days of year 2014 has been found out.