BAS (Building Automation System)
Building Automation Systems (BAS) are used to control building heating, ventilation, and air-conditioning (HVAC) systems, and in some cases building lighting and security systems. They are the most widely adopted technology in the EMIS family, and are implemented in most large and medium-sized commercial buildings. Modern BAS also offer significant trend logging, storage, reporting, and data visualization capabilities. These time series data trends can be used to view and troubleshoot system-level or equipment-level performance. BAS are sometimes referred to as Building Management Systems (BMS), Energy Management Systems (EMS) or Energy Management and Control Systems (EMCS).