Transcript ZigBee and Bluetooth 21

POORNIMA COLLEGE OF ENGINEERING
A
SEMINAR ON
“ZIGBEE”
GUIDED BY:
MS. SHIKHA BHARDWAJ
LECTURER,ECE
BY:
VISHWAS MEHTA
VIII SEM,ECE-B
www.powerpointpresentationon.bogspot.com
WHAT IS ZIGBEE?
• Technological Standard Created for Control
and Sensor Networks
• Based on the IEEE 802.15.4 Standard
• Created by the ZigBee Alliance
SENSOR/CONTROL NETWORK
REQUIREMENTS
• Large networks (large number of devices and
large coverage area) that can form autonomously
and that will operate very reliably for years without
any operator intervention
• Very long battery life (years off of a AA cell), very
low infrastructure cost (low device & setup costs)
and very low complexity and small size
• Device data rate and QoS needs are low
• Standardized protocols are necessary to allow
multiple vendors to interoperate
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WHY ZIGBEE?
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Reliable
Mesh networking
Low data-rate applications
Very long battery life
Secure
Scalable
Low cost
Global applicability
HOW DOES ZIGBEE WORK?
• Engineers feel Wi-Fi and Bluetooth may be
unsuitable. This spawned the idea of digital radio
networks via direct-sequence spread spectrum
coding.
• ZigBee-compliant radios may operate on one of
three different radio bands: the 800 MHz, 900
MHz, or 2.4 GHz frequencies.
• Follows the internationally recognized radio
standard for the MAC and PHY Layer.
TARGET MARKETS
Monitors
Sensor
s
Automatio
n
Control
Industrial &
Commercial
TV
VCR
DVD
CD
Remote
Consumer
Electronics
PC Peripherals
Personal
Healthcare
Monitors
Diagnostic
s
Sensor
s
Mouse
Keyboard
Joystic
k
Gamepad
Low Data Rate
Radio Devices
Toys &
Games
PETs
Gameboy
s
Educationa
l
Home
Automation
Security
HVAC
Lighting
Closure
s
PC And Peripherals
• Desktop PCs and Home Entertainment Systems (Home
Theatre TV)
o Computer peripherals;
o HID devices
• Video conference equipment
o Remote control
• Video gaming equipment
o Multi-player PC & video games
o Remote controls for audio and video equipment
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Human Input Devices (HID)
• Keyboard
• Mouse / Pointing Device
• Remote Controls (controls for audio & video
equipment)
• Gaming device
• Double Joystick
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PATIENT MONITORING
• May allow more patient freedom
Monitors vital statistics and sends via
internet
 Patient can remain in their own home
 Lowers cost and improves comfort
o Can be used in hospice care
 Patients are allowed greater
movement
 Reduced staff to patient ratio
 Light way to bathroom when they get
out of bed
 Reduces patient confusion
o
1010
graphic
graphic
LIGHTING CONTROL
• Wireless Lighting
Control
o Dimmable ballasts
o Light switches
anywhere
o Customizable lighting
schemes
o Energy Saving on
bright days
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ZIGBEE VS
BLUETOOTH
ZIGBEE AND BLUETOOTH
Optimized for different applications
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ZigBee
o Smaller packets over large
network
o Mostly Static networks with
many, infrequently used
devices
o Home automation, toys,
remote controls, etc.
• Bluetooth
o Larger packets over small network
o Ad-hoc networks
o File transfer
o Screen graphics, pictures, handsfree audio, Mobile phones,
headsets, PDAs, etc.
WIRELESS TECHNOLOGY COMPARISON
CHART
Standard
Bandwidth
Protocol Stack Stronghold
Size
Applications
ZigBee
250kbps
4-32KB
Long battery life, Remote control,
low cost
battery-operated
products, sensors
Bluetooth
1 Mbps
~100+KB
Interoperability, Wireless USB,
cable
handset, headset
replacement
Wi-Fi
Up to 54Mbps
100+KB
High data range Internet browsing,
PC networking, file
transfers
ZIGBEE AND BLUETOOTH
Address Different Needs
• Bluetooth is a cable
replacement for items
like Phones, Laptop
Computers, Headsets
• Bluetooth expects
regular charging
o Target is to use
<10% of host power
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ZIGBEE AND BLUETOOTH
Address Different Needs
• ZigBee is better for devices
Where the battery is ‘rarely’
replaced
o Targets are :
 Tiny fraction of host
power
 New opportunities where
wireless not yet used
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ZigBee and Bluetooth
CONCLUSION
• ZigBee targets applications not addressable by
Bluetooth or any other wireless standard
• ZigBee and Bluetooth complement for a broader
solution
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TOPOLOGY MODELS
• Allows users to balance system cost, reliability & battery life
Mesh
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Reliability
Extended Range
No Battery Life
Routing
Complexity
Star
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Simplicity
Low Cost
Long Battery Life
Single Point of
Failure
Hybrid (Cluster
Tree)• Flexibility
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Reliability/Range of
Mesh
Battery Life of Star
Design Complexity
PAN coordinator
Full Function
Device
Reduced Function
Device
ZIGBEE MESH NETWORKING
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ZIGBEE MESH NETWORKING
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ZIGBEE MESH NETWORKING
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ZIGBEE MESH NETWORKING
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ZIGBEE MESH NETWORKING
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IEEE 802.15.4
• IEEE 802.15.4 is a standard defined by IEEE for
low rate, wireless personal area network.
• The standard defines the Physical layer and
Medium Access Layer
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IEEE 802.15.4 CONTINUED
• PHY- It defines low power spread spectrum radio
operating at 2.4 GHz with a basic data rate of 250
kbps
• MAC -defines how multiple 802.15.4 radios
operating in the same area will share the airwaves.
The MAC supports several architectures, including
a star topology, tree topologies and mesh
topologies
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THE ZIGBEE PLATFORM
End developer applications,
designed using application ZA1 ZA2 …
ZAn IA1
IAn
profiles
Application interface designed API
UDP
using
general profile
IP
Topology management, MAC
management, routing, discovery ZigBee NWK
802.2 LLC
protocol, security management
MAC
Channel access, PAN maintenance,
IEEE 802.15.4 MAC
reliable data transport
Transmission & reception on the
physical radio channel
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IEEE 802.15.4 PHY
DATA TRANSFER MODEL
Coordinator to Device
Device to Coordinator
Beacon Enabled
Mode
Non-Beacon Enabled
Mode
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THE 802 WIRELESS SPACE
WWAN
IEEE 802.22
IEEE 802.20
WMAN
Ra
ng
e
WiMax
IEEE 802.16
WLAN
ZigBee
802.15.4 Bluetoot
h
802.15.1
WPAN
0.01
0.1
1
Data Rate
(Mbps)
WiFi
802.11
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802.15.3
802.15.3a
802.15.3c
100
1000
PROS AND CONS
Cons
Pros
• good extension of existing
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standards
supported by many
companies
low power consumption
low cost
easy implemented (Designer
concentrates on end
application)
flexible network structure
• Not many end devices
available yet
• Single point of failure
(centralized architecture)
SOME PARTICIPANTS
CompXs
ZIGBEE ALLIANCE - MEMBERS
and many more....
Parting Thought
“Just as the personal computer was a symbol of
the '80s, and the symbol of the '90s is the World
Wide Web, the next nonlinear shift, is going to be
the advent of cheap sensors.”
-Paul Saffo
Institute for the Future
Thank you
for
your attention!
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