Smart Controlling System for Green Centralized Air Conditioner based on System Engineering Approach

System monitoring and remote control is a necessity in order to achieve maximum service for service users. Because of shortcomings in the movement and control of Air Conditioner (AC), which still relies on manual systems, resulting in waste for AC energy released, in addition, there is no system that can monitor and control air conditioners remotely or centrally. Author tries to make the process of monitoring and controlling being centralized through the control room that can be used more easily for officers, specifically related to the AC control unit. In the other hand, energy from the AC can be more monitored. The temperature of the room will be monitored and controlled through a computer in the control room. That will make efficiency of energy used and become Green Air Conditioner, specifically in the use of centralized AC in office buildings. The concept of system that designed based on service-oriented by using the system engineering method as a benchmark in system design. Workflow of the system that created is temperature of the room will be taken by the sensor that installed in each room. Data from the sensor will be processed in the microcontroller and sent to the computer via the internet network, which will be showed in real time by using an internet connection, it will necessary to set the AC temperature from the control room automatically. In addition, web service programs are also used to monitor, control, and schedule centralized AC systems, it will m create more efficiency in the use of AC energy.