Systems linked to a BMS typically represent 40% of a building’s energy usage; if lighting is included, this number approaches 70%. BMS systems are a critical component to managing energy demand. Building Management System (BMS) uses software and hardware to control and monitor the building’s mechanical and electrical equipments such as electric power, lighting, HVAC, fire alarm, lifts, CCTV, access, etc. The software and hardware communicate via protocols like C-Bus, ProfiBus, ModBus, SOAP, XML, BacNet, LonWorks, etc. Recently many vendors have upgraded the system with cloud computing, so the monitor and control processes can be done via internet at anytme from anywhere in the world.
In addition to controlling the building’s internal environment, BMS systems are sometimes linked to access control systems control- ling who is allowed access and egress to the building or other security systems such as CCTV and motion detectors. Fire alarm systems and elevators are also sometimes linked to a BMS, for monitoring and control.