A Building Management System (BMS) or a (more recent terminology) Building Automation System (BAS) is a computer-based control system installed in buildings that controls and monitors the building’s mechanical and electrical equipment such as ventilation, lighting, power systems, fire systems, and security systems. A BMS consists of software and hardware; the software program, usually configured in a hierarchical manner, can be proprietary, using such protocols as C-bus, Profibus, and so on. Vendors are also producing BMSs that integrate using Internet protocols and open standards such as DeviceNet, SOAP, XML, BACnet, LonWorks and Modbus.

As part of Building Management system, Advantech Building Automation systems helps intelligent buildings to increase energy efficiency and energy saving. It offers web-enabled and browser-based components to allow engineers to be much more flexible and to easily control equipments in building automation systems. WebAccess HMI/SCADA software provides remote access and management capabilities for human machine interface and SCADA control, BACnet remote IO modules are designed for building automation systems that include open database management and standard protocols. Besides, Web-enabled HMI platform and Web-enabled DDC controller; IO modules are suitable for web browsers and help engineers develop building automation system applications for intelligent building. Finally, Advantech's Energy Data Concentrators can be integrated with a wide range of building automation equipment to make it easier to control systems, increase energy efficiency and energy saving.





System Description:
As well as employing Advantech’s DDC controller and BAS-3000 series remote I/O modules to connect various devices on both the inside and outside of the building, and adopting a 12" industrial panel as an on-site HMI terminal for electromechanical cabinets, the kernel of this solution is HMI/SCADA Software.Advantech WebAccess is a multi-layer networking architecture system and its almost unlimited nodes allow users to link a large number of remote clients to a central server. Based on a unified energy management framework and the area of responsibility concept, the system is divided into three BAS subsystems (each with about 12,000 clients) to manage the shop, hotel and office areas. The building manager can supervise the operational conditions of subsystems from the control center while each of them can operate alone in normal times but support each other when necessary. 

The dynamic display provides a mechanism for refreshing the state of the graphs, real-time data, historical trends and alarm information. Through a standard web browser or mobile client, users can use tablet PC to view, control and configure the system remotely. To prevent unauthorized data changes, WebAccess supports various privileges to restrict display and data access so as to enhance system security. In addition, this SCADA system can automatically turn on or off the facilities to maintain the best operating conditions with the lowest cost in light of the user’s operating strategy. Conventional periodic maintenance and overhaul (every six months) would also change in accordance with the operating hours of the equipment. Proper maintenance practices can greatly save manpower and improve work efficiency. Alarm or fault notification can be supplied via several methods such as immediately displaying on screen or sending short messages, e-mails and reports to the manager. Therefore, the person in charge can quickly find out the failures so as to quickly troubleshoot the problems and make sure that the building is always operating efficiently.