25-07-2012, 01:20 PM
Wireless Sensor Network
A Network.ppt (Size: 1.98 MB / Downloads: 58)
Why Talk About Wireless?
Wireless communication is not a new technology but cell phones have brought revolution in wireless communication
Wireless Technology has changed the way
Organizations & individuals work & live today
In less than 10 years
World has moved from fixed to wireless networks
Allowing people, mobile devices & computers talk to each other, connect without a cable
Only available option for field data acquisition
Interconnectivity with multiple devices
Using radio-waves, sometimes light
Frees user from many constrains of traditional computer & phone system
Growth in Wireless Systems
Rapid growth in cellular voice services
Cell phones everywhere!
Several wireless technology options have been available for the last ~10-20 yrs
Mini cell stations using existing standards like CDMA or GSM
Wireless PABX using PCS standards such as DECT.
Satellite and microwave backhaul
What is a WSN?
A network that is formed when a set of small sensor devices that are deployed in an “ad hoc fashion” no predefined routes, cooperate for sensing a physical phenomenon.
A Wireless Sensor Network (WSN) consists of base stations and a number of wireless sensors.
It simple, tiny, inexpensive, and battery-powered
Why Wireless Sensors Now?
Moore’s Law is making sufficient CPU performance available with low power requirements in a small size.
Research in Materials Science has resulted in novel sensing materials for many Chemical, Biological, and Physical sensing tasks.
Transceivers for wireless devices are becoming smaller, less expensive, and less power hungry (low power tiny Radio Chips).
Power source improvements in batteries, as well as passive power sources such as solar or vibration energy, are expanding application options.
Application in Environment Monitoring
Measuring pollutant concentration
Pass on information to monitoring station
Predict current location of pollutant volume based on various parameters
Take corrective action.
Putting Sensor in vehicle
Vehicle equipped with sensor and short range wireless communication capability can form ad-hoc vehicular wireless mesh network (V MESH)
Two application scenarios:
Vehicular traffic monitoring and control.
Inter connecting Patches of sensor network.
A Network.ppt (Size: 1.98 MB / Downloads: 58)
Why Talk About Wireless?
Wireless communication is not a new technology but cell phones have brought revolution in wireless communication
Wireless Technology has changed the way
Organizations & individuals work & live today
In less than 10 years
World has moved from fixed to wireless networks
Allowing people, mobile devices & computers talk to each other, connect without a cable
Only available option for field data acquisition
Interconnectivity with multiple devices
Using radio-waves, sometimes light
Frees user from many constrains of traditional computer & phone system
Growth in Wireless Systems
Rapid growth in cellular voice services
Cell phones everywhere!
Several wireless technology options have been available for the last ~10-20 yrs
Mini cell stations using existing standards like CDMA or GSM
Wireless PABX using PCS standards such as DECT.
Satellite and microwave backhaul
What is a WSN?
A network that is formed when a set of small sensor devices that are deployed in an “ad hoc fashion” no predefined routes, cooperate for sensing a physical phenomenon.
A Wireless Sensor Network (WSN) consists of base stations and a number of wireless sensors.
It simple, tiny, inexpensive, and battery-powered
Why Wireless Sensors Now?
Moore’s Law is making sufficient CPU performance available with low power requirements in a small size.
Research in Materials Science has resulted in novel sensing materials for many Chemical, Biological, and Physical sensing tasks.
Transceivers for wireless devices are becoming smaller, less expensive, and less power hungry (low power tiny Radio Chips).
Power source improvements in batteries, as well as passive power sources such as solar or vibration energy, are expanding application options.
Application in Environment Monitoring
Measuring pollutant concentration
Pass on information to monitoring station
Predict current location of pollutant volume based on various parameters
Take corrective action.
Putting Sensor in vehicle
Vehicle equipped with sensor and short range wireless communication capability can form ad-hoc vehicular wireless mesh network (V MESH)
Two application scenarios:
Vehicular traffic monitoring and control.
Inter connecting Patches of sensor network.