MECH3023: Building Energy Management and Control Systems

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System Architecture

1.  DDC System Architecture

• Data communication between DDC panels
• Open system interconnection (OSI)
• DDC topologies and network layers
• Network access method
• LAN standards
• Physical layer standards
• Physical media

2.  Architecture Diagrams & Product Details

• DDC Online [http://www.ddc-online.org/]
• Architecture diagrams
• Product details

3.  Control Networks and Interoperability

• Interoperability defined
• Understanding "protocol”
• ISO/OSI seven-layer model
• Building automation example
• Web browsing example
• Web browsers as workstations
• Designing interoperable systems

4.  Case Study: Building Automation System (PowerPoint presentation)

• System architecture
• Major components
• Access levels
• Network map & graphic penetration
• Common BAS functions

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References:

• Shadpour, F., 2001. The Fundamentals of HVAC Direct Digital Control: Practical Applications and Design, 2nd ed., Chapter 4, Hacienda Blue, Escondido, CA. [697 S52]
• Newman, H. M., 2001. Control networks and interoperability, Network Controls: A Supplement to HPAC Engineering, May 2001, pp. 17-27.

Web Links:

• Webopedia.com
• Architecture, ARCnet (Attached Resource Computer Network), Client/server (=Master/Slave), Ethernet, IEEE 802 standards, Interoperability, LAN (local-area network), Media (transmission), Network, Node, OSI (Open System Interconnection), Peer-to-peer, Protocol, Token, Topology
• Introduction to Internetworking [cisco]
• Open System Interconnection (OSI) Reference Model
• The 7 Layers of the OSI Model [webopedia]
• DDC Online [http://www.ddc-online.org/]
• Manufacturer's Product List
• Introduction To DDC
• Input/Output Tutorial

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| Created: Nov 2005 | Update: 8 Feb 2006 | By: cmhui@hku.hk |