Design of an energy efficient Iot enabled smart system based on DALI network over MQTT protocol

The term “Internet of Things” or “IoT” refers to a hot and virgin area that is gaining importance day by day with increasing advancement in technology. With the help of micro-controllers like Arduino and microcomputers like Raspberry Pi, cheap devices can be used to measure sensor data and send it over the internet. Also, DALI (Digital Addressable Lighting Interface) is a new module of communication between the electrical equipment and a server or computer that will result in an effective realization of a smart-grid. This paper covers the communication of a DALI network of a group of lights with a Raspberry Pi (broker) over MQTT (Message Queuing Telemetry Transport) protocol keeping the concept of IoT in the background. This method proved to optimize electricity usage by optimal controlling the intensity of LEDs at various floors of the CDAC smartbuilding.