Zigbee Technology2
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Transcript of Zigbee Technology2
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SEMINOR TITLE: ZIGBEE TECHNOLOGY DATE:19-3-2010
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SEMINOR TITLE: ZIGBEE TECHNOLOGY DATE:19-3-2010
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SEMINOR TITLE: ZIGBEE TECHNOLOGY DATE:19-3-2010
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SEMINOR TITLE: ZIGBEE TECHNOLOGY DATE:19-3-2010
A BSTRA CT:
v It is a technology to interact with
remotely controlled devices.
v A single remote can control many
devices.
v It mainly concentrates on HAN.
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SEMINOR TITLE: ZIGBEE TECHNOLOGY DATE:19-3-2010
ZIGBEE: It is a HAN designed specifically to
replace the proliferation of individual
remote controls. It is introduced by OSI reference model
in several layers.
The layers are physical layer, MAC layerand network layer.
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Zig bee Architecture:
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FRAME STRUCTURE:
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Fr a me St r uc t u r e :q It provides a payload of up to 104 bytes.
q Frame check sequence ensure that
packets are received with out error.
q Frame structure improves the reliability
in difficult conditions.
q It uses CRC- 16 for verifying framesequence.
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Fr a me St r uc t u r e :( co n t d )q It provides an ACK (acknowledgement) frame.
qMAC command frame provides the mechanism
for remote control and configuration of clientnodes.
qMAC is used to configure the individual frames.
q Beacon frame wake up the client devices whichlisten for their address and go back to sleep if theydont receive it.
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SEMINOR TITLE: ZIGBEE TECHNOLOGY DATE:19-3-2010
De v ic e Ty pe s:
Zig bee coordinator: It forms the root
of the network and store the information
about the network.
Zig bee router: It acts as a intermediate
and pass data from other devices.
Zig bee end device: It providesfunctionality to talk to its parent node.
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Po w e r sa v ing :
Zig bee networks are designed to
conserve the power of slave nodes.
Slave device is in deep sleep mode and
wakes up only for a fraction of seconds.
It takes 15ms for transition from sleepmode to data transition.
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Se c u r i t y :
v Access control
vData encryption through symmetrickey.
v Frame integrity
v Sequential freshness to reject data
frames that have been replayed.
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Ne t w o r k : It associates devices using the network
coordinator.
It is responsible to start a new network
and assigning address to newly associated
devices.
It supports multiple network topologieslike star, tree and mesh etc.
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Network topologies:
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General operation frame work: It is a layer between several
applications.
It consists of complete informationabout the devices.
It specifies methods, events and data
formats. It requires less than 32kb of memory.
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Example for zig bee device:
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A ppl ica t io ns :It is used in several applications like
v Industrial purposes
v Finger print keypad lock
vMotion and heat sensing solar flood
light
vWire less personal area net working
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SEMINOR TITLE: ZIGBEE TECHNOLOGY DATE:19-3-2010
Co nc l us i o n: It is an underlying communicationtechnology.
It provides data reliability, long batterylife and lower system costs through flexiblenetworking.
It provides network security and profilespecifications.
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References:
http://www.zigbee.com
http://www.smartthome.com
OUR CROSSBOW SENSOR
EQUIPMENT AND ZIGBEE by philipkuryloski and sameer pai.
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SEMINOR TITLE: ZIGBEE TECHNOLOGY DATE:19-3-2010