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Though this question is not within my specialty, please find hereunder its answer:
THE GENERAL CONCEPT
Why do we need a Building Management System?
All Buildings have some form of mechanical and electrical services in order to provide the
facilities necessary for maintaining a comfortable working environment. These services
have to be controlled by some means to ensure, for example, that there is adequate hot
water for sinks, that the hot water in the radiators is sufficient to keep an occupied space
warm, that heating with ventilation and possibly cooling is provided to ensure comfort
conditions wherever, irrespective of the number of occupants or individual preferences.
Basic controls take the form of manual switching, time clocks or temperature switches that
provide the on and off signals for enabling pumps, fans or valves etc.
The purpose of a Building Management System (BMS) is to automate and take control of
these operations in the most efficient way possible for the occupiers/business, within the
constraints of the installed plant.
What is a Building Management System and how does it work?
The BMS is a “stand alone” computer system that can calculate the pre-set requirements of
the building and control the connected plant to meet those needs. Its inputs, such as
temperature sensors and outputs, such as on/off signals are connected into outstations
around the building. Programmes within these outstations use this information to decide the
necessary level of applied control. The outstations are linked together and information can
be passed from one to another. In addition a modem is also connected to the system to
allow remote access.
The level of control via the BMS is dependent upon the information received from its sensors
and the way in which its programmes tell it to respond to that information. As well as offering
a precise degree of control to its environment, it can be made to alarm on conditions that
can’t meet specification or warn of individual items of plant failure.
Occupancy times for different areas are
programmed into the Building Management System
such that the plant is brought on and off to meet
the occupier requirements. These times are often
under optimum start control. This means that the
heating plant is enabled, at a varying predetermined
time, to ensure that the heated space is
at the set desired temperature for the start of the
day. The Building Management System therefore,
based on the outside air temperature the space
temperature and the building structure, determines
the plant start time.
A Building Management System (BMS) 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.
that is from wikipedia...........but
we use as a building automation system which is another defintion as Building automation describes the advanced functionality provided by the control system of a building. A building automation system (BAS) is an example of a distributed control system. The control system is a computerized, intelligent network of electronic devices designed to monitor and control the mechanical, electronics, and lighting systems in a building
overall we can say that BMS is used for
A Building Management System (BMS) 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.
