Smart street lighting system with light intensity control using power electronics

This paper proposes a smart system for efficient control of intensity of street lights. The system uses a TRIAC based light intensity control circuit. The TRIAC controls the voltage applied to the circuit which is proportional to the light intensity. The light intensity is controlled based on the traffic measured by sensors and the system is automatically switched on/off based on the sunrise/sunset information available from reliable internet sources. The power electronics circuit combined with Internet of Things (IoT) devices and software creates a fully autonomous system which reduces unnecessary power consumption in street lights. The system can be monitored and overridden (during emergencies) with the help of a simple Graphical User Interface (GUI.)