PERVASIVE COMPUTING

By

A.Pravallika

11711A01203

Department of IT

Contents: What is Pervasive Computing Definition Why Pervasive Computing History Pervasive computing Components Pervasive Computing Networking Applications Advantages Disadvantages Conclusion

What is Pervasive Computing?

Pervasive means “EXISTING EVERYWHERE”

Pervasive computing incorporate the future of network computing

enabling wireless communication between individuals and computing

devices and between devices itself.

Pervasive Computing devices are tiny, invisible microprocessors

embedded in any type of objects like clothes,home,cars,watches etc.,

Also known as Ubiquitous Computing.

Definition: In Technology View Computers everywhere – embedded into fridges, washing

machines, door locks, cars, furniture, people. intelligent environment – Lights, air conditioning, TV

automatically switch on and off when you enter or leave rooms.

Mobile Computing Vision –Universal connectivity to anywhere, anytime.

In User View Invisible – implicit interaction with your environment Augmenting human abilities in context of tasks Ubiquitous = mobile computing + intelligent

environment

Why Pervasive Computing?

Pervasive computing is the growing trend towards embedding

microprocessors in everyday objects so they can communicate

information.  

pervasive computing is the concept related to the ability to

perform computing tasks on any type of devices.

this technology is moving beyond the personal computer to

everyday devices with embedded technology .

History:In the 21st century the technology revolution will move into the everyday, the small and the invisible

“The most profound technologies are those that disappears. ”

Mark Weiser (1952 –1999),XEROX PARC(Palo Alto Research Center)

Pervasive computing is the third wave of computing technologies to emerge since computers first appeared:

First Wave - Mainframe computing era: one computer shared by many people, via workstations.

Second Wave - Personal computing era: one computer used by one person, requiring a conscious interaction. Users largely bound to desktop.

Third Wave – Pervasive computing era: one person, many computers. Millions of computers embedded in the environment, allowing technology to recede into the background.

Pervasive Computing Components

Pervasive computing involves three converging areas of Information and Communications Technology(CIT):

Computing (‘smart devices’), Communications (‘connectivity’) User interfaces

Smart Devices can communicate with each other

sensors: input devices that detect environmental changes, user behaviors, human commands etc;processors: electronic systems that analyze input-data;actuators: output devices that respond to processed information by altering the environment via electronic or mechanical means.

For example, air temperature control is often done with actuators. However the term can also refer to devices which deliver information rather than altering the environment physically.

Connectivity (network)• Many existing and emerging wireless technologies serve in

Pervasive Computing:

Zigbee and Bluetooth :sensors and actuators - low energy consumption, short distances (up to 10 meters)

Wi-Fi - devices : middle ranges (several hundreds of meters) 3G /4G : A home gateway to Internet - long ranges (several to

tens of kilometres)

User Interfaces point of contact between ICT and human

Active: Users control PC technologies and devices Passive: PC control in the background

For example recognizing a person’s face. It might also be based on sound, touch recognition, or other sensory information like temperature.

PERVASIVE NETWORKING Pervasive networking is the ability for devices to

autonomously arrange themselves into local networks and

exchange information through these networks.

Components of Pervasive networking: Pervasive

Network Layer

Pervasive Access Layer

Pervasive Device Layer

Pervasive Human Machine Interaction Layer

Pervasive Human Core Layer

Layers of Pervasive Networking

Pervasive Network Layer

This layer includes all networks and the networks are connected

directly or indirectly to the internet. Server and Gateways are the

important parts in this layer.

Pervasive Access Layer

This layer deals with pervasive network connection issues. Issues

considered in this layer are Service Discovery and Management,

network access protocols.

Layers of Pervasive Networking

Pervasive Device Layer

This layer includes all user interactive devices whether

they are interacted directly or indirectly. Issues considered in this

layer are Sensors and Smart Devices.

Pervasive HMI Layer

This layer deals Human interaction with all network

accessed devices.

Layers of Pervasive Networking

Pervasive Human Core Layer

This layer is the inner layer of the Pervasive

networking. Issues in this layer are based on the various

applications. Applications considered for human core layer

are such as Health care, smart home, business application

etc.,

Applications Of Pervasive Computing

Healthcare Intelligent bandages that can tell how the injury is doing

or video consultations with doctors, that can treat patients at home.

Home care Transport Environmental Monitoring Industry & Academia

Example: A visitor brings his/her laptop into a meeting room and without

manually configuring it in any way uses it to send his presentation to the room’s projector Physical integration: the projector can be activated from any

laptop in the room Instantant interoperation: A laptop can spontaneously

interact with the projector and control the presentation Can be made context-sensitive, e.g., allowing only a particular

visitor to do so

ADVANTAGES OF PERVASIVE COMPUTING

Manage information quickly, efficiently and

effortlessly.

Convenient access to relevant information stored on

networks, allowing them to easily take action anywhere,

anytime.

Environment will be supplemented with interconnected

digital technologies.

DISADVANTAGES OF PERVASIVE COMPUTING

Pervasive Computing is not entirely secure.

Frequent line connections that are broken.

Slow Connections.

Very expensive operating costs.

CONCLUSION

Information can be accessed when and where it is needed.

Imagine Having a SINGLE remote to control all your

Electronic Gadgets.

But still Privacy and Security major drawbacks of the

Pervasive Computing.