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FUNDAMENTALS OF 
PRACTICAL BUILDING 
AUTOMATION SYSTEMS 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Introduction 
• Building Automation System (BAS) is a data acquisition and control 
system. 
• BAS is also known as energy management system. 
• It is an automated, computer-controlled method of controlling and 
managing the energy use in a building. 
• It helps reduce and optimize energy expenses while also ensuring a 
comfortable environment. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Introduction 
• BAS incorporates various functionalities provided by the control 
system of a building. 
• Modern BAS systems comprise a computerized, intelligent network 
of electronic devices that are designed to monitor and control the 
lighting, internal climate and other systems in a building. 
• This results in optimized energy usage, safety, security, 
information, communication and entertainment facilities. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Introduction 
• Primary components of BAS system include sensors, controllers, actuators and 
software. 
• These components work together to reduce energy consumption while 
maintaining comfortable conditions in a building facility. 
• By implementing the basic control strategies correctly, BAS can perform basic 
and effective functions to use energy more efficiently. 
• Graphic illustrates how systems are linked together in a BAS & how systems are 
connected through a network of sensors, controllers, actuators, and software. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Introduction 
• System interface is 
through a central BAS 
workstation, which 
can be connected to 
other BAS 
workstations via 
internet. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Introduction 
• BAS maintains the internal climate of building within a 
specified range. 
• This is achieved by: 
– regulating temperature and humidity 
– regulating lighting based on parameters such as occupancy, ambient 
light & timing schedule 
– monitoring system performance & device failures 
– generating useful data/notifications to building operations & 
maintenance staff. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Introduction 
Main benefits of building automation include: 
– Lower energy usage. 
– Optimization of energy usage. 
– Security and privacy. 
– Control over energy resources. 
– Control of operating conditions such as humidity, air volume and 
temperature. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Introduction 
Building with multi-proprietary designs: 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Introduction 
Convergence of systems in a smart building: 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Introduction 
Building automation in commercial building & apartment building 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Economics of a smart building 
• Buildings have long life cycles that typically range between 25-40 years. 
• Building life cycle costs include the initial cost of the facility comprising concept, design, 
financing and construction as well as the long term operational costs. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Economics of a smart building 
• Smart buildings can help significantly reduce these costs as seen by the lower capital 
(CAPEX) and operational (OPEX) expenses. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Economics of a smart building 
• Considerable construction cost savings are obtained in smart 
buildings by adopting efficient methods related to cabling, 
labor, project management and equipment. 
• Smart buildings also eliminate significant overheads that result 
from having separate contractors and workforce that must be 
managed, controlled and coordinated. 
• The number of contractors/workforce in a smart building are 
considerably reduced leading to lower labor, management and 
engineering costs. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Economics of a smart building 
• Savings in terms of long-term operational costs are related to the 
following factors: 
– Standardized infrastructure permits easier changes during the operational 
life of the facility for automation system devices, lighting and 
communication systems, networking systems etc. 
– Energy savings that result from increased building efficiency. 
– Effective interaction between various systems during emergency 
situations. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Economics of a smart building 
• Reduced training costs through the implementation of standardized 
management tools. 
• Improved information management and overall staff productivity. 
• Ability to procure systems with open protocols and generic cabling 
requirements. 
• Standardized databases that enable easy integration with additional 
systems of the likes of Human Resources and Procurement 
management. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Why Building Automation is Needed? 
• Easy and centralized management of operations. 
• Simplicity, future expandability and interoperability. 
• Lower costs. 
• Reduced scope for human error. 
• High-quality building maintenance. 
• Responsive building management. 
• Ability to meet tenant needs. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Direct Digital Control (DDC) 
• In a basic control loop; a sensor, controller & 
controlled device interact to control a medium. 
• Here, the controller is a distinct piece of hardware. 
• In a Direct Digital Control (DDC) system, controller 
function takes place in software. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Direct Digital Control (DDC) 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Direct Digital Control (DDC) 
• General DDC 
system block 
diagram: 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Predecessors to DDC Control 
• Early controls were pneumatic or air-based systems and were generally 
restricted to controlling various aspects of the HVAC system. 
• Common devices included controllers, sensors, actuators, valves, 
positioners, & regulators. 
• Pneumatic controllers used compressed air to operate the dampers and 
valve actuators, to control space conditions such as temp, humidity & 
fresh-air circulation. 
• One building would have several such systems which were controlled 
independently. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Predecessors to DDC Control 
• Fig shows independent pneumatic controllers controlling an air-handling system 
comprising two fans, three dampers and three valves. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Topology 
• Most building automation networks consist of a primary and secondary level. 
• Function of primary level is to mainly gather data from the secondary level 
devices & send out commands for managing the controls inside the building. 
• Several kinds of buses can be used to set up the entire network, including serial 
(RS-232/485), optical fiber, Ethernet, or even a wireless interface. 
• In view of the modern day demands of video streams in surveillance systems 
for strong bandwidth, gigabit Ethernet switches and wireless LAN devices are 
more ideal for Building Automation Systems than serial devices. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Topology 
• Building automation systems rely on standardized 
network protocols, the most commonly used of which 
are: 
BAC-net 
LonWorks 
KNX/EIB 
Internet based–wired and wireless 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Topology 
Building Automation Network 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Key Building Blocks 
• Components of a BAS system essentially create an independent network in which 
communication can be conducted through wired or wireless signals. 
• Most common smart building components are devices and controllers. 
• Devices may be typical electrical or electronic components such as lights, fans, etc. 
that can be controlled remotely. 
• They’re designed to specifically receive signals and react to them accordingly by 
turning on, opening, or performing some other useful function. 
• Controllers such as switches & remotes are used to control these devices by 
sending signals to these devices to trigger various functions. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Key Building Blocks 
• In a standard building 
automation model, system 
functionality is divided into 
three levels that are ordered 
hierarchically. 
• Environmental data are 
measured & parameters 
physically controlled at the 
field level. 
• Automatic control is performed 
at the automation level. 
• Global configuration & 
management tasks are realized 
at the management level. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Key Building Blocks 
• Standard 3-level functional hierarchy model can be implemented as a flatter, two-level 
architecture to enable: 
– intelligent field devices to incorporate more functionality than ordinary ones . 
– information technology (IT) and its infrastructure became accepted not only at the management, but also at 
the automation level. 
– 2layered hierarchical approach for BAS is shown. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Industrial Networks 
• Modern building facilities use sensors and control devices that are linked to a 
central control system. 
• These sensors & control devices are installed throughout the facility. 
• In the past, each individual system would have its own set of cables that would 
allow it to communicate with the central control system. 
• This arrangement still exists in many facilities. 
• But, newer buildings are implementing converged networks that act as a single 
communications backbone for multiple systems. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
Industrial Networks 
• Internet Protocol (IP)-based network systems are becoming an increasingly 
common option as a communications backbone for building facilities. 
• Many buildings are now starting to deploy multiple Intelligent Building 
systems as well as administrative Local Area Networks on a single IP-based 
network. 
• Most manufacturers of BAS & related sensors and controls are currently 
designing their products to operate on an IP network. 
• Such networks have major benefits associated with them such as cost 
efficiency, greater flexibility, higher data capacity and multiple vendor 
options. 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
DO YOU WANT TO KNOW MORE? 
If you are interested in further training or information, 
please visit: 
http://idc-online.com/slideshare 
www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss

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Fundamentals of Practical Building Automation Systems

  • 1. FUNDAMENTALS OF PRACTICAL BUILDING AUTOMATION SYSTEMS www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 2. Introduction • Building Automation System (BAS) is a data acquisition and control system. • BAS is also known as energy management system. • It is an automated, computer-controlled method of controlling and managing the energy use in a building. • It helps reduce and optimize energy expenses while also ensuring a comfortable environment. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 3. Introduction • BAS incorporates various functionalities provided by the control system of a building. • Modern BAS systems comprise a computerized, intelligent network of electronic devices that are designed to monitor and control the lighting, internal climate and other systems in a building. • This results in optimized energy usage, safety, security, information, communication and entertainment facilities. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 4. Introduction • Primary components of BAS system include sensors, controllers, actuators and software. • These components work together to reduce energy consumption while maintaining comfortable conditions in a building facility. • By implementing the basic control strategies correctly, BAS can perform basic and effective functions to use energy more efficiently. • Graphic illustrates how systems are linked together in a BAS & how systems are connected through a network of sensors, controllers, actuators, and software. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 5. Introduction • System interface is through a central BAS workstation, which can be connected to other BAS workstations via internet. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 6. Introduction • BAS maintains the internal climate of building within a specified range. • This is achieved by: – regulating temperature and humidity – regulating lighting based on parameters such as occupancy, ambient light & timing schedule – monitoring system performance & device failures – generating useful data/notifications to building operations & maintenance staff. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 7. Introduction Main benefits of building automation include: – Lower energy usage. – Optimization of energy usage. – Security and privacy. – Control over energy resources. – Control of operating conditions such as humidity, air volume and temperature. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 8. Introduction Building with multi-proprietary designs: www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 9. Introduction Convergence of systems in a smart building: www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 10. Introduction Building automation in commercial building & apartment building www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 11. Economics of a smart building • Buildings have long life cycles that typically range between 25-40 years. • Building life cycle costs include the initial cost of the facility comprising concept, design, financing and construction as well as the long term operational costs. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 12. Economics of a smart building • Smart buildings can help significantly reduce these costs as seen by the lower capital (CAPEX) and operational (OPEX) expenses. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 13. Economics of a smart building • Considerable construction cost savings are obtained in smart buildings by adopting efficient methods related to cabling, labor, project management and equipment. • Smart buildings also eliminate significant overheads that result from having separate contractors and workforce that must be managed, controlled and coordinated. • The number of contractors/workforce in a smart building are considerably reduced leading to lower labor, management and engineering costs. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 14. Economics of a smart building • Savings in terms of long-term operational costs are related to the following factors: – Standardized infrastructure permits easier changes during the operational life of the facility for automation system devices, lighting and communication systems, networking systems etc. – Energy savings that result from increased building efficiency. – Effective interaction between various systems during emergency situations. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 15. Economics of a smart building • Reduced training costs through the implementation of standardized management tools. • Improved information management and overall staff productivity. • Ability to procure systems with open protocols and generic cabling requirements. • Standardized databases that enable easy integration with additional systems of the likes of Human Resources and Procurement management. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 16. Why Building Automation is Needed? • Easy and centralized management of operations. • Simplicity, future expandability and interoperability. • Lower costs. • Reduced scope for human error. • High-quality building maintenance. • Responsive building management. • Ability to meet tenant needs. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 17. Direct Digital Control (DDC) • In a basic control loop; a sensor, controller & controlled device interact to control a medium. • Here, the controller is a distinct piece of hardware. • In a Direct Digital Control (DDC) system, controller function takes place in software. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 18. Direct Digital Control (DDC) www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 19. Direct Digital Control (DDC) • General DDC system block diagram: www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 20. Predecessors to DDC Control • Early controls were pneumatic or air-based systems and were generally restricted to controlling various aspects of the HVAC system. • Common devices included controllers, sensors, actuators, valves, positioners, & regulators. • Pneumatic controllers used compressed air to operate the dampers and valve actuators, to control space conditions such as temp, humidity & fresh-air circulation. • One building would have several such systems which were controlled independently. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 21. Predecessors to DDC Control • Fig shows independent pneumatic controllers controlling an air-handling system comprising two fans, three dampers and three valves. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 22. Topology • Most building automation networks consist of a primary and secondary level. • Function of primary level is to mainly gather data from the secondary level devices & send out commands for managing the controls inside the building. • Several kinds of buses can be used to set up the entire network, including serial (RS-232/485), optical fiber, Ethernet, or even a wireless interface. • In view of the modern day demands of video streams in surveillance systems for strong bandwidth, gigabit Ethernet switches and wireless LAN devices are more ideal for Building Automation Systems than serial devices. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 23. Topology • Building automation systems rely on standardized network protocols, the most commonly used of which are: BAC-net LonWorks KNX/EIB Internet based–wired and wireless www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 24. Topology Building Automation Network www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 25. Key Building Blocks • Components of a BAS system essentially create an independent network in which communication can be conducted through wired or wireless signals. • Most common smart building components are devices and controllers. • Devices may be typical electrical or electronic components such as lights, fans, etc. that can be controlled remotely. • They’re designed to specifically receive signals and react to them accordingly by turning on, opening, or performing some other useful function. • Controllers such as switches & remotes are used to control these devices by sending signals to these devices to trigger various functions. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 26. Key Building Blocks • In a standard building automation model, system functionality is divided into three levels that are ordered hierarchically. • Environmental data are measured & parameters physically controlled at the field level. • Automatic control is performed at the automation level. • Global configuration & management tasks are realized at the management level. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 27. Key Building Blocks • Standard 3-level functional hierarchy model can be implemented as a flatter, two-level architecture to enable: – intelligent field devices to incorporate more functionality than ordinary ones . – information technology (IT) and its infrastructure became accepted not only at the management, but also at the automation level. – 2layered hierarchical approach for BAS is shown. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 28. Industrial Networks • Modern building facilities use sensors and control devices that are linked to a central control system. • These sensors & control devices are installed throughout the facility. • In the past, each individual system would have its own set of cables that would allow it to communicate with the central control system. • This arrangement still exists in many facilities. • But, newer buildings are implementing converged networks that act as a single communications backbone for multiple systems. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 29. Industrial Networks • Internet Protocol (IP)-based network systems are becoming an increasingly common option as a communications backbone for building facilities. • Many buildings are now starting to deploy multiple Intelligent Building systems as well as administrative Local Area Networks on a single IP-based network. • Most manufacturers of BAS & related sensors and controls are currently designing their products to operate on an IP network. • Such networks have major benefits associated with them such as cost efficiency, greater flexibility, higher data capacity and multiple vendor options. www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss
  • 30. DO YOU WANT TO KNOW MORE? If you are interested in further training or information, please visit: http://idc-online.com/slideshare www.idc-online.com/slideshare Technology TTrraaiinniinngg tthhaatt WWoorrkkss