MANAJEMEN SISTEM PENERANGAN DENGAN KENDALI ON/OFF RELAY PADA GEDUNG MENGGUNAKAN MIKROKONTROLLER DAN METODE POLLING

Electricity energy savings are needed, considering that currently new renewable energy has not developed much and still relies on fossil-based energy which is increasingly scarce. One component that consumes electrical energy is the use of lighting. In general, buildings as a center of activity currently still rely on switch on-off installed on the wall to turn off / turn on lighting and operators need to operate it. Human factors and large areas in the building make the level of efficiency in the use of electrical energy highly dependent on the operator. Inefficient use of electrical energy for lighting lamps is obtained when lighting lights up at an incorrect time, for example during the day, or an area that should be turned off. Centralized on / off control system is one solution to optimize the use of electrical energy for building lighting by replacing wall-mounted on / off switches with the use of a relay controlled by a centralized microcontroller. In this study the use of relays is controlled by an Arduino microcontroller that works by getting orders by reading data periodically to a server connected to the internet. Users can turn off or turn on lighting by accessing a pre-programmed web server and store the status of the relay in a MySQL database. The results of this study get an on / off relay control system that works behind NAT by using a local IP that can access the server on the internet. The relay status readings are carried out in polls and periodically 10 seconds to find out the final status. Installation of equipment is carried out in a parallel with the on / off switch installed on the wall so it won’t need to overhaul the existing electrical structure and anticipate reserves if the automatic on / off control system fails.