The document provides an overview of integrated building management systems (IBMS) and their components. It discusses that BMS/BAS are computerized systems that monitor, control, and manage building systems and services. A BMS connects systems like HVAC, lighting, security, and others on a single platform. It lists five building services typically automated by a BMS: chiller systems, emergency lighting, air conditioning, fire alarms, and security systems. The document also outlines the basic functional tasks of an integrated BMS, which include data acquisition, controls, communication, and diagnostics. It names common BMS components like digital networks, direct digital controllers, sensors, actuators, and software.

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Tutorial 1
Overview of IBMS

2. ET1521 INTEGRATED BUILDING MANAGEMENT Tutorial
➢ BMS/BAS stands for Building Management /Automation Systems, which are computerised systems
to monitor, control and manage building plant, facilities and services.
➢ A building automation system (BAS) is an intelligent system of both hardware and software,
connecting heating, venting and air conditioning system (HVAC), lighting, security, and other systems
to communicate on a single platform.
➢ BMS systems are “Intelligent” microprocessor based controller networks installed to monitor and
control a buildings technical systems and services such as air conditioning, ventilation, lighting and
hydraulics.
• More specifically they link the functionality of individual pieces of building equipment so that they
operate as one complete integrated system.
• Now installed in every major building or facility with the availability of direct integration into all
other building services such as security, access control, CCTV, fire, Lifts and other life and safety
systems.
• Current generation BMS systems are now based on open communications protocols and are WEB
enabled allowing integration of systems from multiple system vendors and access from anywhere
in the world.
1a.
1a. What is BMS/BAS?

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1b.
• Chiller system (HVAC)
• Emergency lighting
• Aircon (Heating Ventilation Air Conditioning system)
• Fire alarm system
• Security Observation system (CCTV)
• Security Automation (Card access, Turnstiles, Barrier Gate, etc)
• Primary electrical power supply system (Electric power control)
• Emergency power supply system
• Light system
• Emergency lighting control system
• Public Address System (PA)
• Lifts, elevators, etc
• Domestic water system including Plumbing
• Uninterrupted Power Supply (UPS)
1b. Describe five building services, usually to be automated by BMS.

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2a.
✓ Data acquisition and processing
✓ Controls
✓ Communication and information management
✓ Diagnostic functions
1a. List the basic functional tasks carried out by an integrated building management
system.

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2b.
➢ Network digital communication systems (Chp2)
➢ Direct Digital Controllers (DDC) (Chp3)
➢ Sensors and transducers (Chp4)
➢ Actuators and control devices (Chp4)
➢ Terminal devices / Operator Machine Interface OMI (Chp5)
➢ Software (Cp6, 7, 8) – BMS Software Design Concept; BMS Applications; Building Services &
Facility Management Applications
2b. Name the component(s) required for carrying out the tasks you have listed.

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3a. Draw a schematic diagram of a distributed-architecture BMS, showing the
major components in the system.
(A) (B)

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3b.
1) Failure of any part of the control system does not affect the operation of the rest
of the system - individual DDCs will continue to carry out their control functions.
2) The control and alarm response of a distributed control system is rapid because
data processing and control operations are performed locally at each DDC field
panel.
3) Distributed systems are relatively inexpensive to install and are easy to operate
and expand.
3b. Give two advantages of distributed-architecture BMS over centralized BMS.

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4.
Centralized
✓ They consist of a central computer that holds the applications programs and the database for the
whole system.
✓ Response time of centralized BMS is slow.
✓ Failure of the central computer or the link between the central computer and other devices would
result in total loss of the building control system.
Distributed
✓ The DDCs can work as standalone control systems but additionally offer a wide range of
networking and programming capabilities.
✓ Failure of any part of the control system does not affect the operation of the rest of the system.
✓ The control and alarm response of a distributed control system is rapid.
✓ Distributed systems are relatively inexpensive to install and expand.
4. Compare and contrast, in terms of the merits and demerits, for adopting distributed
and centralized BMS architecture.

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5a
Trend logging
This is a record of system parameters updated at intervals regular enough to establish trends in the variable being
measured.
Data analysis and report generation
This refers to the analysis of data acquired from monitoring applications, and the generation of management reports
based on the analysis. Typical reports include energy consumption, equipment failure, alarms, etc.
Totalisation
This involves applications such as the accumulation of runtime totals for fans, pumps and other building equipment.
Totalisation can be used to provide information for equalisation of plant running hours where more than one of the
same plant is installed. It can also be used for energy metering and billing.
Maintenance Scheduling and Inventory Control
Two useful database management applications are maintenance scheduling and inventory control. Based upon a
predetermined preventive maintenance schedule, the computer can generate detailed work orders to guide
maintenance personnel. Following the conclusion of the work, the parts used can be deducted from the inventory
database.
5a. List four BMS Facilities Management Applications.

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5a
▪ Metering
The data acquisition capability of DDCs can be used to meter virtually any utility to corroborate, supplement, or even
replace conventional metering. Chilled water and electricity consumption are two of the most commonly metered
utilities.
▪ Monitoring
A BMS can provide advanced warning of impending problems. It also has the capability to remotely diagnose
malfunctions that have already occurred in the plant, using sensors and transmitters available for the control
functions.
More severe alarms may activate a visual and/or audible signal, print out the nature of the problem, and possibly even
tell the operator what action to take. The most severe alarms could be programmed to do all of the above and to call
maintenance staff via an automatic dialer.
▪ Controls
A BMS can provide advanced control programs, energy management programs relating to operational services of
building A/C, fire protection and security systems, maintenance and engineering services and even for
administrational and accounting services.

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5b
➢ The difference lies in that building services are the objects served by facilities
management applications.
5b.What’s the difference between building services and BMS facilities management
applications?