A Smart GUI Based Air-Conditioning and Lighting Controller for Energy Saving in Building

This paper will concentrate on the algorithm and control strategies where the air-conditioners and lighting system can be controlled using microcontroller; a microcontroller is chosen due to its low cost and high flexibility. Conceptually, the controller is programmed with i9nternal timer and sensors to automatically switch off the power supply to the air-conditioning and lighting units at pre-defined times, or when no user is detected in a room. The working prototype of energy saving control system is developed with graphical user interface (GUI) embedded in Graphic LCD in order to avoid the dependency of personal computer which consume a lot of energy. The system has been built and tested in UMP lecture room. Based on our case study and energy audit, the prototype can achieve 35% reduction in the energy consumption of the air-conditioning and lighting system in UMP lecture room. For market potential, the control system can also be used in other places such as domestics, industrial and office building.