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Sedona Framework and 6loWPAN The Sedona Framework and 6loWPAN - A Platform for Small Devices / The Internet for Wireless Devices This session of TridiumTALK is an educational forum focused on wireless technologies, the benefits of wireless networks in real world building automation applications, and an introduction to the Sedona Framework, Tridium's newest embedded device technology that distributes decision making control and manageability to any device and brings intelligence and connectivity to the network edge and back.
Wireless Technologies Power Lighting HVAC Enterprise Applications Server Cellular Networks PAN Networks Security WiMAX & WiFi Networks PDA/Smart Phone Browser Client Building Controller
Wireless Technologies Cellular (2.5G & 3G - > 10,000m) –EDGE/HSDPA (Cingular) –EV-DO (Verizon,Sprint/Nextel) MAN (Municipal Area Network - 10,000m) – WiMax - Worldwide Interoperability for Microwave Access LAN (Local Area Network – 30 to 100m) – a,b,g,n WiFi PAN (Personal Area Network > 30m) – / Zigbee / 6loPAN –RFID & Bluetooth
Multiple Wireless Protocols Controllers will need to support multi- wireless protocols Multiple ports and multiple antennas Same story as wired world multi protocols just no wires! Need for both a gateway and integration platform
Wireless Value Proposition Installation cost Resource savings Implementation time Ideal for moving and movable assets Operational Savings –Travel, Labor
Wireless Issues & Concerns Batteries –Replacement labor –Environmental Issues –New battery and power technologies Loss of Service –We deal with it every day –Must be considered –Self healing networks and smart routing
What is ? IEEE standard for low cost, low speed, low power wireless communication Targeted at device to device communication Supports multiple frequencies, including the worldwide unlicensed 2.4 GHz band –Sixteen channels –Shares spectrum with (WiFi) and Bluetooth 250 kbit/s data 2.4 GHz 127 bytes max packet length Each device has a unique 8 byte identifier (MAC address)
Networks specification defines methods by which devices can form networks –Networks are known as Personal Area Networks (PANs) –Each network has a unique PAN ID –Three type of nodes – coordinator, routers, end device Network is managed by the coordinator –When end devices start up, they broadcast a request to associate with a network –Coordinator will respond to association request and assigns address to device, updates routing tables throughout the network Multiple network topologies supported, but not specified by standard. –types include star, tree, linear and mesh –Each topology requires a different routing algorithm
Star Network Simplest network All traffic routed through coordinator Limited coverage and quantity since all nodes must be within RF range of the coordinator Requires smallest code and memory footprint End devices can sleep to conserve power
Tree Network Larger coverage area than star network Messages between nodes must get routed to first common ancestor End devices (G & H) can sleep Moderate code and memory requirements A self-healing tree can re-route automatically if link to parent is broken –Example: If G loses communication with E, it could become a child of B
Linear Network Specialized version of the tree network with similar code and memory requirements Large coverage area Single path between all devices
Mesh Network Each node dynamically determines best path to other nodes, changing its routing as paths fail or degrade Most complicated routing algorithm, requires largest code and memory footprint All devices that perform mesh routing must be powered
Hotel Case Study Hotel PTAC Unit Control Cost Sensitive Product Cost Sensitive Industry Low Tech Install and Maintenance Potential for Savings –Energy and Operational Only cost effective solution was wireless Technology had to be Built-In –A PTAC Control Appliance
Front Desk Wireless Appliance Architecture Browser Web Based Controller Local Area Network Wireless Network Wireless Node
Gateway & Controller Gateway Node Full Function Node Orbital Node Gateway Node supports communication to the network via wireless protocol Full Function Nodes automatically form and manage the network as routers Orbital Nodes support the device application and are managed by Full Function Nodes
Wireless Microcontroller Wireless Microcontroller – More than a radio –32-bit RISC –Low Power –Long Range –Chips, Modules, Evaluation Kits Wireless Networking Software –Standards-based IEEE , ZigBee, IPv6 –Highly secure –Co-existence with other wireless infrastructure Applications –High volume consumer markets –RF Remotes, Toys, Gaming –Industrial, Building, Medical –Automotive, Metering, Asset Tracking
Wireless Connectivity Solution Wireless Microcontroller –Highly Integrated Single Chip Solution –Feature rich microcontroller + IEEE compliant transceiver Networking Stacks –Designed for flexibility, low power operation, co-existence, stability and robustness –For sensor and control networking
IPv6 Next generation of Internet Protocol (IP) addressing scheme Expands address space from 4 bytes to 16 bytes –2 128 bits worth of address space –~3.4 x addresses Lots of address space = well suited for addressing devices and M2M applications –Every switch, lamp, appliance, etc. in your home can now have its own IP address Uses different notation for specifying addresses –IPv –IPv :0db8:0000:0000:a526:2962:3960:c0e1
What is 6LoWPAN? 6LoWPAN = IPv6 over Low power Wireless Personal Area Networks Internet standard defined by IETF –RFC4944 – Transmission of IPv6 packets over IEEE –http://www.ietf.org/rfc/rfc4944.txt –Large open community concerned with evolution of the Internet architecture – network designers, operators, vendors, researchers Enables wireless devices to interoperate with other IP-enabled devices using standard protocols An extension of wired IP into the wireless domain….. –Benefits: global addressing / routing – its a Standard.. –Devices have globally unique addresses
6LoWPAN - Purpose To extend IP services down to low power, embedded wireless devices – sensors, controls, actuators Enabling IP and wireless to work together –Small packet sizes, low power consumption, a protocol stack suitable for embedded devices – small footprint, efficient 6LoWPAN defines IPv6 packets over IEEE –Packet fragmentation, header compression, multi-hopping –Compact and efficient implementation for low power wireless Clusters of wireless nodes connected to the wired infrastructure –Nodes within a cluster talk wirelessly –Nodes on different clusters talk through the wired domain Benefits from reuse of existing IP infrastructure –Simple integration and deployment
Why use 6LoWPAN? Leverages existing standards –IP is the field-proven protocol winner Generic solution regardless of device or application type –Permits integrating devices without requiring gateway cognizant of the application A programming tool can communicate directly to a device without special application software and mapping, communications are simply routed through the network! Works with wired and wireless devices, just like the computer world, just like the telecom world. A smart 6LoWPAN router can present an IPv4 address. In this case the router will have a configuration table to handle mapping the extended address to IPv4 addresses.
Technology Evolution Devices need to communicate, control, alarm, and serve data Devices are usually connected in vertical system silos Integration is generally across a wired network LightingSecurityHVACA/V LAN
Personal Area Network Emerging technology allows communication in groups of PANs –Personal Area Network –Add more processing power –Local energy management and optimization –Card swipe Opens door Turns on lights Resets temperature Resets ventilation –A/V On Resets lights Conference Room PAN
Wired / Wireless Solution Wireless works well in some environments but isnt suited for all situations Use a wired backbone –Extends range of wireless network –Eliminates RF interference in problem areas –Wired backbone acts as a high-quality wireless link –Wired/wireless devices form single network with IP addressing throughout –Similar to deploying both WiFi and wired Ethernet connections –Best of both worlds!
Wired / Wireless Network Controller
The pieces thus far… Sedona is the programming model for M2M devices is the technology for wireless device 6LoWPAN enables IP communication to 15.4 devices Jennic has a single chip solution capable of running an app and using 6LoWPAN A wired/wireless solution provides the most flexibility One last missing piece to complete the infrastructure…
New Device Level Technology Software Framework for Embedded Devices Pushing Technology to Edge Devices Smaller - Faster - Easier Wired - Wireless Open Source
Sedona Framework Components Language: component based (function blocks, drivers, apps) Virtual Machine: portable runtime –Multiple vendor independent, low cost, hardware platforms Control Engine: modules of components –Loops and Logic in low level devices –Relays, switches, sensors, actuators Programming Tool: graphically assembling components into new applications Communications: connectivity via IP, serial bus, wireless – 6LoWPAN –IPV6 Addressing :db8:0:0:7:62:60:e1 –Driver Library Open Source: Core technology licensed under AFL 3.0 –Compiler –Virtual machine and runtime –Sedona protocol (Sox), web server, basic control blocks
Sedona Device Architecture Virtual Machine Communications Control Engine Web Server Wireless LoWPAN Wired RS-485 Ethernet Hardware Independent Atmel, Jennic, AMCC, … BACnet, Modbus, SOX …
Sedona Framework Supports IPV6 over wired and wireless IP, MSTP, –Every device has its own Internet IPV6 address –Reuse Internet IP infrastructure High Speed Robust Control –Industrial Control Quality –Small Footprint –More decision power at the edge device level Sedona – Can Jump Start Development –Faster time to market –Cost effective - makes an existing device Network & Wireless Ready –Open Source
Question and Answer Session Type your questions in to the chat area Feel free to speak up for further discussion Please introduce yourself, company name, and where you are calling from.
Thank you! We would like your feedback on todays TridiumTalk Please take a moment to answer our short survey If you have any further questions, comments or topic suggestions, please them to Ed MerwinScott Muench Marc Petock