A building management system (BMS), also known as a building automation system (BAS), is a computer-based control system that monitors and controls a building's mechanical and electrical equipment such as ventilation, lighting, power systems, fire systems, and security systems. A BMS consists of both software and hardware that can integrate various building systems and protocols. It provides benefits such as increased energy efficiency, cost savings, improved reliability and flexibility to adapt to building usage changes over time.

1. Buildingmanagementsystem
A building management system (BMS), otherwise known as a 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.
Contents
 1Characteristics
 2Benefits
o 2.1Building managers
o 2.2Maintenance companies
o 2.3Additional benefits
 3See also
 4References
Characteristics
Building management systems are most commonly implemented in large projects with extensive
mechanical, HVAC, electrical systems. Systems linked to a BMS typically represent 40% of a
building's energy usage; if lighting is included, this number approaches to 70%. BMS systems are a
critical component to managing energy demand. Improperly configured BMS systems are believed to
account for 20% of building energy usage, or approximately 8% of total energy usage in the United
States.[1][2]
In addition to controlling the building's internal environment, BMS systems are sometimes linked to
access control (turnstiles and access doors controlling who is allowed access and egress to the
building) or other security systems such as closed-circuit television (CCTV) and motion detectors.
Fire alarm systems and elevators are also sometimes linked to a BMS, for monitoring. In case a fire
is detected then only the fire alarm panel could shut off dampers in the ventilation system to stop
smoke spreading and send all the elevators to the ground floor and park them to prevent people
from using them.
 Illumination (lighting) control
 Electric power control
 Heating, ventilation and air-conditioning (HVAC)
 Security and observation
 Access control
 Fire alarm system
 Lifts, elevators etc.
 Plumbing
 Closed-circuit television (CCTV)
 Other engineering systems
 Control Panel
 PA system
 Alarm Monitor
 Security Automation

2. Benefits
 Possibility of individual room control
 Increased staff productivity
 Effective monitoring and targeting of energy consumption
 Improved plant reliability and life
 Effective response to HVAC-related complaints
 Save time and money during the maintenance.
Building managers
 Higher rental value
 Flexibility on change of building use
 Individual tenant billing for services facilities time saving
 Remote monitoring of the plants (such as AHU's, fire pumps, plumbing pumps, electrical supply,
STP, WTP, grey water treatment plant etc.)
Maintenance companies
 Ease of information availability
 Computerized maintenance scheduling
 Effective use of maintenance staff
 Early detection of problems or service work easy
 More satisfied occupants
Additional benefits
 Data is consolidated onto a single system to improve reporting, information management and
decision-making. Integrating and managing the HVAC, energy, security, digital video and life
safety applications from a single workstation allows facility-wide insight and control for better
performance.
 Increased operational savings – Efficient resource deployment can result in reduced operational
costs, empowering operators, simplifying training and decreasing false alarms.
 Energy efficient – Real-time view into facility operations and deep trend analysis provide data-
driven insight to optimize your energy management strategies and minimize operational costs.
 Flexibility to grow and expand – The powerful combination of open systems protocols and a
scalable platform means the BMS can help support growth and expansion of the system in the
future.
 Reduced risk – Strategic mobile or desktop control, exceptional alarm management and
integrated security solutions helps to see the big picture, helping to speed up response time and
mitigate risks for the property, people and business.
 Intelligent reporting – Comprehensive reporting with functionality for customizable reports
delivers greater transparency into system history and promotes compliance.
BMS deals with energy demand management. EDM integrates energy policies and regulations in to
overall company operations. It incorporates energy targets into overall business strategies. EDM
conduct management reviews and establishes a system to collect, analyse and report data related
energy consumption and ensure correctness and integrity of that data.

3. See also
 Building automation
 Direct digital control
 Total energy management in hvac
 Building Controls Industry Association
References
1. Advanced Sensors and Controls for Building Applications: Market Assessment and Potential R&D
Pathways (Brambley 2005)
2. Energy Consumption Characteristics of Commercial Building HVAC SystemsVolume III: Energy
Savings Potential (Roth 2002)