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Building Management System (BMS)Thommy A. PurisimaBuilding Management System(BMS)ABuilding Management System(BMS) is a computer-based control system installed in buildings that controls and monitors the buildings mechanical and electrical equipment such asventilation,lighting,power systems, fire systems, andsecurity systems. A BMS consists of software and hardware.Vendors are also producing BMSs that integrate usingInternet protocolsand open standards.

CharacteristicsBuilding Management Systems are most commonly implemented in large projects with extensive mechanical, electrical, and plumbing systems.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.

In addition to controlling the building's internal environment, BMS systems are sometimes linked to access 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 in the event of a fire .

Functions of Building Management SystemsThe four basic functions of a central, computer-controlled BMS are:ControllingMonitoringOptimizingReporting

A BMS normally comprises[Power systems]Illumination systemElectric power control systemHeating, Ventilation and Air-conditioningHVACSystemSecurity and observation systemMagnetic card and access systemFire alarm systemLifts,elevatorsetc.Plumbing systemBurglar alarms, CCTVTrace HeatingOther engineering systemsHome Automation SystemFire alarm and Safety systemManage the sensors of alarm

Benefits of BMSBuilding tenant/occupantsGood control of internal comfort conditionsPossibility of individual room controlIncreased staff productivityEffective monitoring and targeting of energy consumptionImproved plant reliability and lifeEffective response toHVAC-related complaintsSave time and money during the maintenance

Building ownerHigher rental valueFlexibility on change of building useIndividual tenant billing for services facilities managerCentral or remote control and monitoring of buildingIncreased level of comfort and time savingRemote Monitoring of the plants (such as AHU's, Fire pumps, plumbing pumps, Electrical supply, STP, WTP etc.)

Maintenance CompaniesEase of information availability problemComputerized maintenance schedulingEffective use of maintenance staffEarly detection of problemsMore satisfied occupants

Ease of information availability problemComputerized maintenance schedulingEffective use of maintenance staffEarly detection of problemsMore satisfied occupants

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