the hitchhiker’s guide to the internet of things (iot)
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The Hitchhiker’s Guide to the Internet of Things (IoT). Day 2: Topologies and Channels. October 8, 2013 Charles J. Lord, PE President, Consultant, Trainer Blue Ridge Advanced Design and Automation. This Week’s Agenda. 10/7 History and Overview 10/8 Topologies and Channels - PowerPoint PPT PresentationTRANSCRIPT
The Hitchhiker’s Guide to the Internet of Things (IoT)
October 8, 2013Charles J. Lord, PEPresident, Consultant, Trainer
Blue Ridge Advanced Design and Automation
Day 2: Topologies and Channels
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This Week’s Agenda
10/7 History and Overview
10/8 Topologies and Channels
10/9 Application
Drivers/Challenges
10/10 Standards
10/11 The Future – The Challenges2
This Week’s Agenda
10/7 History and Overview
10/8 Topologies and Channels
10/9 Application
Drivers/Challenges
10/10 Standards
10/11 The Future – The Challenges3
Internet of Things
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Quick Review
• An Internet of Things is an “Internet-LIKE” collection of objects that communicate together
• Grew out of RFID and tagging• The medium by which the IoT communicates
depends on the application(s) and topography
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Topography
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Star
Mesh
Cluster Tree
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The ISO:OSI 7 Layer Model
1. Physical2. Data Link3. Network4. Transport5. Session6. Presentation7. Application
Communications
• Optical – bar code, QR, OCR, bio• Passive transponder – RFID• PAN – ZigBee, BTLE, other 15.x• WiFi (802.11x)• ISM• Cell• Wired xxbaseT, CAN, others• Others, “all of the above”
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Personal Area Networks
• IEEE 802.15.x• BlueTooth• BTLE• 15.4 – low speed
– ZigBee– Z-wave– Proprietary (Z-star, SMAC, etc)
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WiFi
• IEEE 802.11x (x=a, b, d, g, n, etc)• High-speed, high power, medium range• Topography
– Point-to-point– Star (tree)
• Advantages: universal, bandwidth• Disadvantages: power, crowded BW, multiple
access points needed to go beyond star
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Free Bands (ISM)
ISM (other than PAN and LAN)
• Essentially point-to-point structure, can be made star or even tree with protocols
• Advantages: If links already established (PHI and TRANSPORT), can communicate with existing devices. Also can make use of perhaps less crowded frequencies
• Disadvantages: roll your own, bands may be geographically limited by regulation
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Other channels
• Cell (GSM, 3/4G, etc) – “unlimited” range as long as service available. Requires account with carrier. Protocols established.
• Wired – (established protocols)– USB– baseT– CAN
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Protocols
• Each communications channel has its own protocol. Other protocols can be layered on top as needed.
• There are some competing protocols being used (and proposed) for networks – more on this Thursday when we discuss standards.
• IPv6 is always an option
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Tying it Together
• Many concepts of the IoT involve using a number of the previous methods for communicating between “things” in the IoT. Tags and RFID may be scanned and read into a location’s database, then that database form a “thing” in a company’s global IoT, along with sensors, geo tracking, and other inputs and controls.
• More on this Friday!15
This Week’s Agenda
10/7 History and Overview
10/8 Topologies and Channels
10/9 Application
Drivers/Challenges
10/10 Standards
10/11 The Future – The Challenges16
Please stick around as I answer your questions!
• Please give me a moment to scroll back through the chat window to find your questions
• I will stay on chat as long as it takes to answer!• I am available to answer simple questions or
to consult (or offer in-house training for your company)[email protected]://www.blueridgetechnc.com
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Apologies to the late Douglas Adams and late Theodor Seuss Geisel for the blatant misuse of
their brilliant creative material…
You are both missed.
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